Merge pull request 'v1.5 new shapes + self culling + caching + coding tools/cleanup' (#10) from dev into master

Reviewed-on: #10

.github/workflows/publish.yml

@@ -0,0 +1,28 @@
+name: Publish mod on Modrinth
+
+on: [ push, workflow_dispatch ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout repository
+        uses: actions/checkout@v3
+      - name: validate gradle wrapper
+        uses: gradle/wrapper-validation-action@v2
+      - name: setup jdk
+        uses: actions/setup-java@v3
+        with:
+          java-version: 17
+          distribution: 'oracle'
+      - name: make gradle wrapper executable
+        if: ${{ runner.os != 'Windows' }}
+        run: |
+          chmod +x ./gradlew
+          touch local.properties
+      - name: Generate data
+        run: ./gradlew runDatagen
+      - name: Publish Modrinth
+        run: ./gradlew modrinth
+        env:
+          MODRINTH_TOKEN: ${{ secrets.MODRINTH_TOKEN }}

CHANGELOG.md

@@ -1,55 +0,0 @@
-Versions before 2.1.2 have been backfilled; I gotta be more on top of changelogs.
-
-# next version (unreleased)
-
-* Start sketching out a proper API, accessible through `TemplatesClientApi.getInstance()`.
-	* Not everything has been moved into the API package yet for ABI reasons.
-* Code cleanups that hopefully didn't break ABI compat
-* Remove some unused stuff from the jar
-* Vertical slab placement no longer completely sucks
-* Fix a bug where templates that look like blocks with randomized models, such as stone, could reroll their blockstate on every resource load.
-  * Forgot to specify a random seed.
-  * All templated blocks still use the *same* model, so templated stone will still not be randomly rotated/flipped, but at least it's now the *same* same model.
-
-road map:
-
-* want to fix texture orientation on vertical slabs/doors
-* really want to fix the way vertical slabs place lmao (it's so buggy)
-* clean up `StairShapeMaker`
-
-# 2.1.1 (Aug 2, 2023)
-
-Enable ambient-occlusion ("smooth lighting") on all Templates except for the slopes, which are still bugged
-
-# 2.1.0 (Jul 31, 2023)
-
-* Add a vertical slab template
-* Add a "tiny slope" template
-* Change the block entity NBT format to be much smaller
-* Reduce memory footprint of the block entity
-* Respect `doTileDrops`
-* Improve creative ctrl-pick behavior on glowing Templates
-* Adding a Barrier block to a Template makes it remove its model (not unbreakable)
-
-# 2.0.4 (Jul 25, 2023)
-
-* Apply more block tags
-* Apply item tags
-
-# 2.0.3 (Jul 23, 2023)
-
-* add Door and Iron Door templates
-* cool rivulet
-
-# 2.0.2 (Jul 20, 2023)
-
-* Add an Iron Trapdoor template
-* Add some more mod metadata (change name to "Templates 2", add authors, fix sources link)
-
-# 2.0.1 (Jul 11, 2023)
-
-Fix a duplication glitch with the Stair Template, which was retaining its block entity after being broken.
-
-# 2.0.0 (Jul 11, 2023)
-
-Initial release

build.gradle

@@ -3,6 +3,7 @@ import fr.altarik.CreateTag
 
 
 plugins {
+	id "com.modrinth.minotaur" version "2.+"
 	id 'fabric-loom' version '1.5-SNAPSHOT'
 	id 'maven-publish'
 }
@@ -72,6 +73,17 @@ repositories {
 	maven {
 		url "https://maven.resourcefulbees.com/repository/maven-public/"
 	}
+	exclusiveContent {
+		forRepository {
+			maven {
+				name = "Modrinth"
+				url = "https://api.modrinth.com/maven"
+			}
+		}
+		filter {
+			includeGroup "maven.modrinth"
+		}
+	}
 	mavenCentral()
 
 	// Add repositories to retrieve artifacts from in here.
@@ -88,13 +100,19 @@ dependencies {
 	mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
 	modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
 
+	// Indium and sodium for sodium support
+	modCompileOnly "maven.modrinth:indium:${project.indium_version}+mc${project.minecraft_version}"
+	modCompileOnly "maven.modrinth:sodium:mc${project.minecraft_version}-${project.sodium_version}"
+//	modRuntimeOnly "maven.modrinth:indium:${project.indium_version}+mc${project.minecraft_version}"
+//	modRuntimeOnly "maven.modrinth:sodium:mc${project.minecraft_version}-${project.sodium_version}"
+
 	// Athena for connected texture
 	modCompileOnly "earth.terrarium.athena:athena-fabric-${project.minecraft_version}:${project.athena_version}"
 	modRuntimeOnly "earth.terrarium.athena:athena-fabric-${project.minecraft_version}:${project.athena_version}"
 
 	// Chipped to test athena implementation
 	modRuntimeOnly "com.teamresourceful.resourcefullib:resourcefullib-fabric-${project.minecraft_version}:2.4.7"
-//	modRuntimeOnly "earth.terrarium.chipped:chipped-fabric-${project.minecraft_version}:3.1.2" TODO not working for some reasons
+	modRuntimeOnly "earth.terrarium.chipped:Chipped-fabric-${project.minecraft_version}:3.1.2"
 
 	// Fabric API. This is technically optional, but you probably want it anyway.
 	modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
@@ -106,6 +124,8 @@ processResources {
 	inputs.property "loader_version", project.loader_version
 	inputs.property "mod_id", project.mod_id
 	inputs.property "athena_version", project.athena_version
+	inputs.property "indium_version", project.indium_version
+	inputs.property "sodium_version", project.sodium_version
 	filteringCharset "UTF-8"
 
 	filesMatching("fabric.mod.json") {
@@ -171,6 +191,23 @@ publishing {
 	}
 }
 
+// configure modrinth publication
+modrinth {
+	token = getEnv("MODRINTH_TOKEN", local.getProperty("modrinth_token"))
+	projectId = project.modrinth_id
+	versionNumber = project.mod_version
+	versionName = "${project.archives_base_name} ${project.mod_version}"
+	versionType = project.mod_version.endsWith('SNAPSHOT') ? 'beta' : 'release'
+	uploadFile = remapJar
+	gameVersions = [project.minecraft_version]
+	loaders = ["fabric"]
+	dependencies {
+		required.project "fabric-api"
+		optional.version "b1ZV3DIJ", "${project.athena_version}"
+		optional.version "Orvt0mRa", "${project.indium_version}+mc${project.minecraft_version}"
+	}
+}
+
 tasks.register("reportToDiscord", ReportDiscord) {
 	config.set(reportConfig)
 }

gradle.properties

@@ -8,7 +8,8 @@ yarn_mappings=1.20.4+build.3
 loader_version=0.15.6
 
 # Mod Properties
-mod_version = 1.2
+modrinth_id = jCpoCBpn
+mod_version = 1.5
 maven_group = fr.adrien1106
 archives_base_name = ReFramed
 mod_id = reframed
@@ -21,3 +22,5 @@ git_owner=Altarik
 git_repo=ReFramed
 
 athena_version=3.3.0
+sodium_version=0.5.8
+indium_version=1.0.30

src/main/java/fr/adrien1106/reframed/ReFramed.java

@@ -1,20 +1,20 @@
 package fr.adrien1106.reframed;
 
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
 import fr.adrien1106.reframed.block.*;
 import net.fabricmc.api.ModInitializer;
 import net.fabricmc.fabric.api.itemgroup.v1.FabricItemGroup;
 import net.fabricmc.fabric.api.object.builder.v1.block.entity.FabricBlockEntityTypeBuilder;
 import net.minecraft.block.AbstractBlock;
 import net.minecraft.block.Block;
-import net.minecraft.block.BlockSetType;
 import net.minecraft.block.Blocks;
 import net.minecraft.block.entity.BlockEntityType;
 import net.minecraft.item.BlockItem;
 import net.minecraft.item.Item;
+import net.minecraft.item.ItemGroup;
 import net.minecraft.item.ItemStack;
 import net.minecraft.registry.Registries;
 import net.minecraft.registry.Registry;
+import net.minecraft.sound.BlockSoundGroup;
 import net.minecraft.text.Text;
 import net.minecraft.util.Identifier;
 import net.minecraft.util.math.BlockPos;
@@ -24,49 +24,61 @@ import java.util.ArrayList;
 import java.util.function.BiConsumer;
 import java.util.stream.Collectors;
 
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.LIGHT;
+
 /**
- * TODO multiple camos
+ * TODO make block pairable by right click                                 -> for v1.6
+ * TODO add Hammer from framed ( removes theme )                           -> for v1.5.5
+ * TODO add screwdriver ( iterate over theme states ) ?
+ * TODO add blueprint for survival friendly copy paste of a theme.         -> for v1.5.5
+ * TODO add minecraft models like wall fence etc                           -> for v1.6
+ * TODO better connected textures                                          -> maybe v1.6 ?
  */
 public class ReFramed implements ModInitializer {
 	public static final String MODID = "reframed";
 
 	public static final ArrayList<Block> BLOCKS = new ArrayList<>();
-	public static Block CUBE, STAIRS, SLAB, POST, FENCE, FENCE_GATE, DOOR, TRAPDOOR, IRON_DOOR, IRON_TRAPDOOR, PRESSURE_PLATE, BUTTON, LEVER, WALL, CARPET, PANE, CANDLE;
+	public static Block CUBE, SMALL_CUBE, SMALL_CUBES_STEP, STAIR, HALF_STAIR, STAIRS_CUBE, HALF_STAIRS_SLAB, HALF_STAIRS_STAIR, SLAB, SLABS_CUBE, STEP, STEPS_SLAB, LAYER;
+	public static ItemGroup ITEM_GROUP;
 
 	public static BlockEntityType<ReFramedEntity> REFRAMED_BLOCK_ENTITY;
+	public static BlockEntityType<ReFramedDoubleEntity> REFRAMED_DOUBLE_BLOCK_ENTITY;
 
 	public static BiConsumer<World, BlockPos> chunkRerenderProxy = (world, pos) -> {};
 	
 	@Override
 	public void onInitialize() {
-		//registerReFramed mutates FRAMES as a side effect, which is a List, so order is preserved
-		//the ordering is used in the creative tab, so they're roughly sorted by encounter order of the
-		//corresponding vanilla block in the "search" creative tab... with the non-vanilla "post" and
-		//"vertical slab" inserted where they fit ...and i moved the lever way up next to the pressureplate
-		//and button, because they're redstoney... hopefully this ordering makes sense lol
-		CUBE           = registerReFramed("cube"          , new ReFramedBlock(ReFramedInteractionUtil.makeSettings()));
-		STAIRS         = registerReFramed("stairs"        , new ReFramedStairsBlock(cp(Blocks.OAK_STAIRS)));
+		CUBE              = registerReFramed("cube"              , new ReFramedBlock(cp(Blocks.OAK_PLANKS)));
+		SMALL_CUBE        = registerReFramed("small_cube"        , new ReFramedSmallCubeBlock(cp(Blocks.OAK_PLANKS)));
+	  	SMALL_CUBES_STEP  = registerReFramed("small_cubes_step"  , new ReFramedSmallCubesStepBlock(cp(Blocks.OAK_PLANKS)));
+		STAIR             = registerReFramed("stair"             , new ReFramedStairBlock(cp(Blocks.OAK_STAIRS)));
+		STAIRS_CUBE       = registerReFramed("stairs_cube"       , new ReFramedStairsCubeBlock(cp(Blocks.OAK_STAIRS)));
+		HALF_STAIR        = registerReFramed("half_stair"        , new ReFramedHalfStairBlock(cp(Blocks.OAK_STAIRS)));
+		HALF_STAIRS_SLAB  = registerReFramed("half_stairs_slab"  , new ReFramedHalfStairsSlabBlock(cp(Blocks.OAK_STAIRS)));
+		HALF_STAIRS_STAIR = registerReFramed("half_stairs_stair" , new ReFramedHalfStairsStairBlock(cp(Blocks.OAK_STAIRS)));
+		LAYER             = registerReFramed("layer"             , new ReFramedLayerBlock(cp(Blocks.OAK_SLAB)));
 		SLAB              = registerReFramed("slab"              , new ReFramedSlabBlock(cp(Blocks.OAK_SLAB)));
-		POST           = registerReFramed("post"          , new ReFramedPostBlock(cp(Blocks.OAK_FENCE)));
-		FENCE          = registerReFramed("fence"         , new ReFramedFenceBlock(cp(Blocks.OAK_FENCE)));
-		FENCE_GATE     = registerReFramed("fence_gate"    , new ReFramedFenceGateBlock(cp(Blocks.OAK_FENCE_GATE)));
-		DOOR           = registerReFramed("door"          , new ReFramedDoorBlock(cp(Blocks.OAK_DOOR), BlockSetType.OAK));
-		TRAPDOOR       = registerReFramed("trapdoor"      , new ReFramedTrapdoorBlock(cp(Blocks.OAK_TRAPDOOR), BlockSetType.OAK));
-		IRON_DOOR      = registerReFramed("iron_door"     , new ReFramedDoorBlock(cp(Blocks.IRON_DOOR), BlockSetType.IRON));
-		IRON_TRAPDOOR  = registerReFramed("iron_trapdoor" , new ReFramedTrapdoorBlock(cp(Blocks.IRON_TRAPDOOR), BlockSetType.IRON));
-		PRESSURE_PLATE = registerReFramed("pressure_plate", new ReFramedPressurePlateBlock(cp(Blocks.OAK_PRESSURE_PLATE)));
-		BUTTON         = registerReFramed("button"        , new ReFramedButtonBlock(cp(Blocks.OAK_BUTTON)));
-		LEVER          = registerReFramed("lever"         , new ReFramedLeverBlock(cp(Blocks.LEVER)));
-		WALL           = registerReFramed("wall"          , new ReFramedWallBlock(ReFramedInteractionUtil.makeSettings()));
-		CARPET         = registerReFramed("carpet"        , new ReFramedCarpetBlock(cp(Blocks.WHITE_CARPET)));
-		PANE           = registerReFramed("pane"          , new ReFramedPaneBlock(cp(Blocks.GLASS_PANE)));
-		CANDLE         = registerReFramed("candle"        , new ReFramedCandleBlock(ReFramedCandleBlock.configureSettings(cp(Blocks.CANDLE))));
+		SLABS_CUBE        = registerReFramed("slabs_cube"        , new ReFramedSlabsCubeBlock(cp(Blocks.OAK_SLAB)));
+		STEP              = registerReFramed("step"              , new ReFramedStepBlock(cp(Blocks.OAK_SLAB)));
+		STEPS_SLAB        = registerReFramed("steps_slab"        , new ReFramedStepsSlabBlock(cp(Blocks.OAK_SLAB)));
 
 		REFRAMED_BLOCK_ENTITY = Registry.register(Registries.BLOCK_ENTITY_TYPE, id("camo"),
-			FabricBlockEntityTypeBuilder.create((pos, state) -> new ReFramedEntity(REFRAMED_BLOCK_ENTITY, pos, state), BLOCKS.toArray(new Block[0])).build(null)
+			FabricBlockEntityTypeBuilder.create(
+				(pos, state) -> new ReFramedEntity(REFRAMED_BLOCK_ENTITY, pos, state),
+				BLOCKS.stream()
+					.filter(block -> !(block instanceof ReFramedDoubleBlock))
+					.toArray(Block[]::new)).build(null)
 		);
 
-		Registry.register(Registries.ITEM_GROUP, id("tab"), FabricItemGroup.builder()
+		REFRAMED_DOUBLE_BLOCK_ENTITY = Registry.register(Registries.BLOCK_ENTITY_TYPE, id("double_camo"),
+			FabricBlockEntityTypeBuilder.create(
+				(pos, state) -> new ReFramedDoubleEntity(REFRAMED_DOUBLE_BLOCK_ENTITY, pos, state),
+				BLOCKS.stream()
+					.filter(block -> block instanceof ReFramedDoubleBlock)
+					.toArray(Block[]::new)).build(null)
+		);
+
+		ITEM_GROUP = Registry.register(Registries.ITEM_GROUP, id("tab"), FabricItemGroup.builder()
 			.displayName(Text.translatable("itemGroup.reframed.tab"))
 			.icon(() -> new ItemStack(SLAB))
 			.entries((ctx, e) -> e.addAll(BLOCKS.stream().map(ItemStack::new).collect(Collectors.toList()))).build()
@@ -74,7 +86,13 @@ public class ReFramed implements ModInitializer {
 	}
 
 	private static AbstractBlock.Settings cp(Block base) {
-		return ReFramedInteractionUtil.configureSettings(AbstractBlock.Settings.copy(base));
+		return AbstractBlock.Settings.copy(base)
+			.luminance(state -> state.contains(LIGHT) && state.get(LIGHT) ? 15 : 0)
+			.nonOpaque()
+			.sounds(BlockSoundGroup.WOOD)
+			.hardness(0.2f)
+			.suffocates((a,b,c) -> false)
+			.blockVision((a,b,c) -> false);
 	}
 	
 	private static <B extends Block> B registerReFramed(String path, B block) {

src/main/java/fr/adrien1106/reframed/block/ReFramedBlock.java

@@ -1,29 +1,62 @@
 package fr.adrien1106.reframed.block;
 
-import com.google.common.base.MoreObjects;
 import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
+import fr.adrien1106.reframed.generator.RecipeSetter;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
 import net.minecraft.block.*;
 import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.ShapedRecipeJsonBuilder;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.BlockItem;
 import net.minecraft.item.ItemPlacementContext;
 import net.minecraft.item.ItemStack;
+import net.minecraft.item.Items;
+import net.minecraft.nbt.NbtCompound;
+import net.minecraft.recipe.book.RecipeCategory;
 import net.minecraft.state.StateManager;
 import net.minecraft.util.ActionResult;
 import net.minecraft.util.Hand;
+import net.minecraft.util.ItemScatterer;
+import net.minecraft.util.collection.DefaultedList;
 import net.minecraft.util.hit.BlockHitResult;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Direction;
 import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.util.shape.VoxelShapes;
 import net.minecraft.world.BlockView;
+import net.minecraft.world.GameRules;
 import net.minecraft.world.World;
 import org.jetbrains.annotations.Nullable;
 
-public class ReFramedBlock extends Block implements BlockEntityProvider {
+import java.util.List;
+
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.LIGHT;
+
+public class ReFramedBlock extends Block implements BlockEntityProvider, RecipeSetter {
+
 	public ReFramedBlock(Settings settings) {
 		super(settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
+		setDefaultState(getDefaultState().with(LIGHT, false));
+	}
+
+	/**
+	 * Generates a record for the key so that it replaces the blockstate
+	 * which may have states that returns same models
+	 * @param state - the state_key to generate the key from
+	 * @return a cache key with only relevant properties
+	 */
+	public Object getModelCacheKey(BlockState state) {
+		return "";
+	}
+
+	/**
+	 * @return the amount of models the block can have prevents allocating too much space for a model
+	 */
+	public int getModelStateCount() {
+		return 1;
 	}
 	
 	//For addon devs: override this so your blocks don't end up trying to place my block entity, my BlockEntityType only handles blocks internal to the mod
@@ -35,51 +68,118 @@ public class ReFramedBlock extends Block implements BlockEntityProvider {
 
 	@Override
 	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
+		super.appendProperties(builder.add(LIGHT));
 	}
 	
 	@Nullable
 	@Override
 	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
+		return ReFramedEntity.getNbtLightLevel(super.getPlacementState(ctx), ctx.getStack());
 	}
 	
 	@Override
 	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
+		if (!canUse(world, pos, player)) return superUse(state, world, pos, player, hand, hit);
+		ActionResult result = BlockHelper.useUpgrade(state, world, pos, player, hand);
+		if (result.isAccepted()) return result;
+		return BlockHelper.useCamo(state, world, pos, player, hand, hit, 1);
+
+	}
+
+	// don't like this but might be useful
+	protected ActionResult superUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
+		return super.onUse(state, world, pos, player, hand, hit);
+	}
+
+	protected boolean canUse(World world, BlockPos pos, PlayerEntity player) {
+		return player.canModifyBlocks() && world.canPlayerModifyAt(player, pos);
 	}
 	
 	@Override
 	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
+		if(!state.isOf(newState.getBlock()) &&
+			world.getBlockEntity(pos) instanceof ReFramedEntity frame_entity &&
+			world.getGameRules().getBoolean(GameRules.DO_TILE_DROPS)
+		) {
+			DefaultedList<ItemStack> drops = DefaultedList.of();
+
+			List<BlockState> themes = frame_entity.getThemes();
+			themes.forEach(theme -> {
+				if(theme.getBlock() != Blocks.AIR) drops.add(new ItemStack(theme.getBlock()));
+			});
+
+			if(frame_entity.emitsRedstone()
+				&& themes.stream().noneMatch(theme -> theme.getWeakRedstonePower(world, pos, Direction.NORTH) != 0))
+					drops.add(new ItemStack(Items.REDSTONE_TORCH));
+			if(frame_entity.emitsLight()
+				&& themes.stream().noneMatch(theme -> theme.getLuminance() != 0))
+					drops.add(new ItemStack(Items.GLOWSTONE_DUST));
+			if(!frame_entity.isSolid()
+				&& themes.stream().anyMatch(AbstractBlockState::isSolid))
+				drops.add(new ItemStack(Items.POPPED_CHORUS_FRUIT));
+
+			ItemScatterer.spawn(world, pos, drops);
+		}
 		super.onStateReplaced(state, world, pos, newState, moved);
 	}
 	
 	@Override
 	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
+		if(world.isClient && world.getBlockEntity(pos) instanceof ReFramedEntity be) {
+			NbtCompound tag = BlockItem.getBlockEntityNbt(stack);
+			if(tag != null) be.readNbt(tag);
+		}
 		super.onPlaced(world, pos, state, placer, stack);
 	}
 	
 	@Override
 	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
+		return isGhost(view, pos)
+			? VoxelShapes.empty()
+			: super.getCollisionShape(state, view, pos, ctx);
 	}
 
 	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return ReFramedInteractionUtil.emitsRedstonePower(state);
+	public VoxelShape getCullingShape(BlockState state, BlockView view, BlockPos pos) {
+		return isGhost(view, pos)
+			? VoxelShapes.empty()
+			: super.getCullingShape(state, view, pos);
+	}
+
+	public VoxelShape getShape(BlockState state, int i) {
+		// assuming the shape don't need the world and position
+		return getOutlineShape(state, null, null, null);
+	}
+
+	public boolean isGhost(BlockView view, BlockPos pos) {
+		return view.getBlockEntity(pos) instanceof ReFramedEntity be && !be.isSolid();
 	}
 	
 	@Override
 	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
+		return view.getBlockEntity(pos) instanceof ReFramedEntity be && be.emitsRedstone() ? 15 : 0;
 	}
 	
 	@Override
 	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getStrongRedstonePower(state, view, pos, dir);
+		return getWeakRedstonePower(state, view, pos, dir);
+	}
+
+	public int getTopThemeIndex(BlockState state) {
+		return 1;
+	}
+
+	@Override
+	public void setRecipe(RecipeExporter exporter) {
+		ShapedRecipeJsonBuilder
+			.create(RecipeCategory.BUILDING_BLOCKS, this)
+			.pattern("III")
+			.pattern("I~I")
+			.pattern("III")
+			.input('I', Items.BAMBOO)
+			.input('~', Items.STRING)
+			.criterion(FabricRecipeProvider.hasItem(Items.BAMBOO), FabricRecipeProvider.conditionsFromItem(Items.BAMBOO))
+			.criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+			.offerTo(exporter);
 	}
 }

src/main/java/fr/adrien1106/reframed/block/ReFramedButtonBlock.java

@@ -1,95 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockSetType;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.ButtonBlock;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedButtonBlock extends ButtonBlock implements BlockEntityProvider {
-	public ReFramedButtonBlock(Settings settings) {
-		this(settings, BlockSetType.OAK, 30);
-	}
-	
-	public ReFramedButtonBlock(Settings settings, BlockSetType blockSetType, int i) {
-		super(blockSetType, i, settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-	}
-	
-	@Nullable
-	@Override
-	public BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return super.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		boolean a = 0 != super.getWeakRedstonePower(state, view, pos, dir);
-		boolean b = 0 != ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-		return (a ^ b) ? 15 : 0;
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		if(getDirection(state) != dir) return 0;
-		else return getWeakRedstonePower(state, view, pos, dir);
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedCandleBlock.java

@@ -1,92 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import net.minecraft.block.AbstractBlock;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.CandleBlock;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedCandleBlock extends CandleBlock implements BlockEntityProvider {
-	public ReFramedCandleBlock(Settings settings) {
-		super(settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-	}
-	
-	public static AbstractBlock.Settings configureSettings(AbstractBlock.Settings in) {
-		return in.luminance(state -> Math.max(ReFramedInteractionUtil.luminance(state), CandleBlock.STATE_TO_LUMINANCE.applyAsInt(state)));
-	}
-	
-	@Override
-	public @Nullable BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-		super.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return ReFramedInteractionUtil.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getStrongRedstonePower(state, view, pos, dir);
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedCarpetBlock.java

@@ -1,87 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.CarpetBlock;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedCarpetBlock extends CarpetBlock implements BlockEntityProvider {
-	public ReFramedCarpetBlock(Settings settings) {
-		super(settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-	}
-	
-	@Nullable
-	@Override
-	public BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return ReFramedInteractionUtil.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getStrongRedstonePower(state, view, pos, dir);
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedDoorBlock.java

@@ -1,89 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockSetType;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.DoorBlock;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedDoorBlock extends DoorBlock implements BlockEntityProvider {
-	public ReFramedDoorBlock(Settings settings, BlockSetType blockSetType) {
-		super(blockSetType, settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-	}
-	
-	@Nullable
-	@Override
-	public BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-		super.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return ReFramedInteractionUtil.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getStrongRedstonePower(state, view, pos, dir);
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedDoubleBlock.java

@@ -0,0 +1,77 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.Hand;
+import net.minecraft.util.hit.BlockHitResult;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.world.BlockView;
+import net.minecraft.world.World;
+import org.jetbrains.annotations.Nullable;
+
+import static net.minecraft.util.shape.VoxelShapes.empty;
+import static net.minecraft.util.shape.VoxelShapes.fullCube;
+
+public abstract class ReFramedDoubleBlock extends ReFramedBlock {
+    public ReFramedDoubleBlock(Settings settings) {
+        super(settings);
+    }
+
+    @Override
+    public @Nullable BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
+        return ReFramed.REFRAMED_DOUBLE_BLOCK_ENTITY.instantiate(pos, state);
+    }
+
+    protected int getHitShape(BlockState state, BlockHitResult hit) {
+        Direction side = hit.getSide();
+        VoxelShape first_shape = getShape(state, 1);
+        VoxelShape second_shape = getShape(state, 2);
+
+        // Determine if any of the two shape is covering the side entirely
+        if (isFaceFullSquare(first_shape, side)) return 1;
+        if (isFaceFullSquare(second_shape, side)) return 2;
+
+        Vec3d pos = BlockHelper.getRelativePos(hit.getPos(), hit.getBlockPos());
+//        System.out.println(side.getAxis().choose(hit.getPos().x, hit.getPos().y, hit.getPos().z));
+        if (BlockHelper.cursorMatchesFace(first_shape, pos)) return 1;
+        if (BlockHelper.cursorMatchesFace(second_shape, pos)) return 2;
+        return 0;
+    }
+
+    @Override
+    public boolean isTransparent(BlockState state, BlockView world, BlockPos pos) {
+        return world.getBlockEntity(pos) instanceof ThemeableBlockEntity framed_entity
+            && framed_entity.getThemes().stream().allMatch(theme -> theme.isTransparent(world, pos));
+    }
+
+    public VoxelShape getRenderOutline(BlockState state, BlockHitResult hit) {
+        return getShape(state, getHitShape(state, hit));
+    }
+
+    @Override
+    public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
+        return getCullingShape(state, view, pos);
+    }
+
+    @Override
+    public VoxelShape getCullingShape(BlockState state, BlockView view, BlockPos pos) {
+        return isGhost(view, pos) ? empty() : fullCube();
+    }
+
+    @Override
+    public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
+        if (!canUse(world, pos, player)) return superUse(state, world, pos, player, hand, hit);
+        ActionResult result = BlockHelper.useUpgrade(state, world, pos, player, hand);
+        if (result.isAccepted()) return result;
+        return BlockHelper.useCamo(state, world, pos, player, hand, hit, getHitShape(state, hit));
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedDoubleEntity.java

@@ -0,0 +1,62 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Blocks;
+import net.minecraft.block.entity.BlockEntityType;
+import net.minecraft.nbt.NbtCompound;
+import net.minecraft.nbt.NbtHelper;
+import net.minecraft.registry.Registries;
+import net.minecraft.util.math.BlockPos;
+
+import java.util.List;
+import java.util.Objects;
+
+public class ReFramedDoubleEntity extends ReFramedEntity {
+
+    protected BlockState second_state = Blocks.AIR.getDefaultState();
+
+    public ReFramedDoubleEntity(BlockEntityType<?> type, BlockPos pos, BlockState state) {
+        super(type, pos, state);
+    }
+
+    @Override
+    public BlockState getTheme(int i) {
+        return i == 2 ? second_state : super.getTheme(i);
+    }
+
+    @Override
+    public List<BlockState> getThemes() {
+        List<BlockState> themes = super.getThemes();
+        themes.add(second_state);
+        return themes;
+    }
+
+    public void setTheme(BlockState new_state, int i) {
+        if(i == 2) {
+            if (Objects.equals(second_state, new_state)) return;
+            second_state = new_state;
+            markDirtyAndDispatch();
+        } else super.setTheme(new_state, i);
+    }
+
+    @Override
+    public void readNbt(NbtCompound nbt) {
+        super.readNbt(nbt);
+
+        BlockState rendered_state = second_state;// keep previous state_key to check if rerender is needed
+        second_state = NbtHelper.toBlockState(Registries.BLOCK.getReadOnlyWrapper(), nbt.getCompound(BLOCKSTATE_KEY + 2));
+
+        // Force a chunk remesh on the client if the displayed blockstate has changed
+        if(world != null && world.isClient && !Objects.equals(rendered_state, second_state)) {
+            ReFramed.chunkRerenderProxy.accept(world, pos);
+        }
+    }
+
+    @Override
+    public void writeNbt(NbtCompound nbt) {
+        super.writeNbt(nbt);
+
+        if(second_state != Blocks.AIR.getDefaultState()) nbt.put(BLOCKSTATE_KEY + 2, NbtHelper.fromBlockState(second_state));
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedEntity.java

@@ -1,8 +1,8 @@
 package fr.adrien1106.reframed.block;
 
 import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import fr.adrien1106.reframed.util.ThemeableBlockEntity;
+import fr.adrien1106.reframed.util.blocks.BlockProperties;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
 import net.minecraft.block.entity.BlockEntity;
@@ -21,26 +21,22 @@ import net.minecraft.util.math.BlockPos;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Objects;
 
 //Keeping the weight of this block entity down, both in terms of memory consumption and NBT sync traffic,
 //is pretty important since players might place a lot of them. There were tons and tons of these at Blanketcon.
-//To that end, most of the state has been crammed into a bitfield.
+//To that end, most of the state_key has been crammed into a bitfield.
 public class ReFramedEntity extends BlockEntity implements ThemeableBlockEntity {
-	protected BlockState renderedState = Blocks.AIR.getDefaultState();
-	protected byte bitfield = DEFAULT_BITFIELD;
+	protected BlockState first_state = Blocks.AIR.getDefaultState();
+	protected byte bit_field = SOLIDITY_MASK;
 	
-	protected static final int SPENT_GLOWSTONE_DUST_MASK = 0b00000001;
-	protected static final int SPENT_REDSTONE_TORCH_MASK = 0b00000010;
-	protected static final int SPENT_POPPED_CHORUS_MASK  = 0b00000100;
-	protected static final int EMITS_REDSTONE_MASK       = 0b00001000;
-	protected static final int IS_SOLID_MASK             = 0b00010000;
-	protected static final byte DEFAULT_BITFIELD = IS_SOLID_MASK; //brand-new frames shall be solid
+	protected static final byte LIGHT_MASK    = 0b001;
+	protected static final byte REDSTONE_MASK = 0b010;
+	protected static final byte SOLIDITY_MASK = 0b100;
 
-	//Using one-character names is a little brash, like, what if there's a mod that adds crap to the NBT of every
-	//block entity, and uses short names for the same reason I am (because there are lots and lots of block entities)?
-	//Kinda doubt it?
-	protected static final String BLOCKSTATE_KEY = "s";
+	public static final String BLOCKSTATE_KEY = "s";
 	protected static final String BITFIELD_KEY = "b";
 	
 	public ReFramedEntity(BlockEntityType<?> type, BlockPos pos, BlockState state) {
@@ -48,145 +44,116 @@ public class ReFramedEntity extends BlockEntity implements ThemeableBlockEntity
 	}
 	
 	@Override
-	public void readNbt(NbtCompound tag) {
-		super.readNbt(tag);
+	public void readNbt(NbtCompound nbt) {
+		super.readNbt(nbt);
 		
-		BlockState lastRenderedState = renderedState;
+		BlockState rendered_state = first_state; // keep previous state_key to check if rerender is needed
+		first_state = NbtHelper.toBlockState(Registries.BLOCK.getReadOnlyWrapper(), nbt.getCompound(BLOCKSTATE_KEY + 1));
+		if (nbt.contains(BITFIELD_KEY)) bit_field = nbt.getByte(BITFIELD_KEY);
 		
-		if(tag.contains("BlockState")) { //2.0.4 and earlier
-			renderedState = NbtHelper.toBlockState(Registries.BLOCK.getReadOnlyWrapper(), tag.getCompound("BlockState"));
-			
-			if(tag.getBoolean("spentglow")) spentGlowstoneDust();
-			if(tag.getBoolean("spentredst")) spentRedstoneTorch();
-			if(tag.getBoolean("spentchor")) spentPoppedChorus();
-			setEmitsRedstone(tag.getBoolean("emitsredst"));
-			setSolidity(!tag.contains("solid") || tag.getBoolean("solid")); //default to "true" if it's nonexistent
-		} else {
-			renderedState = NbtHelper.toBlockState(Registries.BLOCK.getReadOnlyWrapper(), tag.getCompound(BLOCKSTATE_KEY));
-			bitfield = tag.contains(BITFIELD_KEY) ? tag.getByte(BITFIELD_KEY) : DEFAULT_BITFIELD;
-		}
-		
-		//Force a chunk remesh on the client if the displayed blockstate has changed
-		if(world != null && world.isClient && !Objects.equals(lastRenderedState, renderedState)) {
+		// Force a chunk remesh on the client if the displayed blockstate has changed
+		if(world != null && world.isClient && !Objects.equals(rendered_state, first_state)) {
 			ReFramed.chunkRerenderProxy.accept(world, pos);
 		}
 	}
 	
 	@Override
-	public void writeNbt(NbtCompound tag) {
-		super.writeNbt(tag);
+	public void writeNbt(NbtCompound nbt) {
+		super.writeNbt(nbt);
 		
-		if(renderedState != Blocks.AIR.getDefaultState()) tag.put(BLOCKSTATE_KEY, NbtHelper.fromBlockState(renderedState));
-		if(bitfield != DEFAULT_BITFIELD) tag.putByte(BITFIELD_KEY, bitfield);
+		if(first_state != Blocks.AIR.getDefaultState()) nbt.put(BLOCKSTATE_KEY + 1, NbtHelper.fromBlockState(first_state));
+		if(bit_field != SOLIDITY_MASK) nbt.putByte(BITFIELD_KEY, bit_field);
 	}
 
-	public static @NotNull BlockState readStateFromItem(ItemStack stack) {
-		NbtCompound blockEntityTag = BlockItem.getBlockEntityNbt(stack);
-		if(blockEntityTag == null) return Blocks.AIR.getDefaultState();
+	public static @NotNull BlockState readStateFromItem(ItemStack stack, int state) {
+		NbtCompound nbt = BlockItem.getBlockEntityNbt(stack);
+		if(nbt == null) return Blocks.AIR.getDefaultState();
 		
 		//slightly paranoid NBT handling cause you never know what mysteries are afoot with items
-		NbtElement subElement;
-		if(blockEntityTag.contains(BLOCKSTATE_KEY)) subElement = blockEntityTag.get(BLOCKSTATE_KEY); //2.0.5
-		else if(blockEntityTag.contains("BlockState")) subElement = blockEntityTag.get("BlockState"); //old 2.0.4 items
+		NbtElement element;
+		if(nbt.contains(BLOCKSTATE_KEY + state)) element = nbt.get(BLOCKSTATE_KEY + state);
 		else return Blocks.AIR.getDefaultState();
 		
-		if(!(subElement instanceof NbtCompound subCompound)) return Blocks.AIR.getDefaultState();
-		
-		else return NbtHelper.toBlockState(Registries.BLOCK.getReadOnlyWrapper(), subCompound);
+		if(!(element instanceof NbtCompound compound)) return Blocks.AIR.getDefaultState();
+		else return NbtHelper.toBlockState(Registries.BLOCK.getReadOnlyWrapper(), compound);
 	}
 	
 	//Awkward: usually the BlockState is the source of truth for things like the "emits light" blockstate, but if you
 	//ctrl-pick a glowing block and place it, it should still be glowing. This is some hacky shit that guesses the value of
 	//the LIGHT blockstate based off information in the NBT tag, and also prevents bugginess like "the blockstate is not
 	//glowing but the copied NBT thinks glowstone dust was already added, so it refuses to accept more dust"
-	public static @Nullable BlockState weirdNbtLightLevelStuff(@Nullable BlockState state, ItemStack stack) {
+	public static @Nullable BlockState getNbtLightLevel(@Nullable BlockState state, ItemStack stack) {
 		if(state == null || stack == null) return state;
 		
-		NbtCompound blockEntityTag = BlockItem.getBlockEntityNbt(stack);
-		if(blockEntityTag == null) return state;
+		NbtCompound nbt = BlockItem.getBlockEntityNbt(stack);
+		if(nbt == null) return state;
 		
-		if(state.contains(ReFramedInteractionUtil.LIGHT)) {
-			state = state.with(ReFramedInteractionUtil.LIGHT,
-				blockEntityTag.getBoolean("spentglow") || //2.0.4
-				((blockEntityTag.contains(BITFIELD_KEY) ? blockEntityTag.getByte(BITFIELD_KEY) : DEFAULT_BITFIELD) & SPENT_GLOWSTONE_DUST_MASK) != 0 || //2.0.5
-				readStateFromItem(stack).getLuminance() != 0 //glowstone dust wasn't manually added, the block just emits light
+		if(state.contains(BlockProperties.LIGHT)) {
+			state = state.with(BlockProperties.LIGHT,
+				((nbt.contains(BITFIELD_KEY)
+					? nbt.getByte(BITFIELD_KEY)
+					: SOLIDITY_MASK)
+					& LIGHT_MASK) != 0
 			);
 		}
 		
 		return state;
 	}
 
-	//RenderAttachmentBlockEntity impl. Note that ThemeableBlockEntity depends on this returning a BlockState object.
 	@Override
-	public BlockState getRenderAttachmentData() {
-		return renderedState;
+	public BlockState getTheme(int i) {
+		return first_state;
 	}
 
-	public void setRenderedState(BlockState newState) {
-		if(!Objects.equals(renderedState, newState)) {
-			renderedState = newState;
+	@Override
+	public List<BlockState> getThemes() {
+		List<BlockState> themes = new ArrayList<>();
+		themes.add(first_state);
+		return themes;
+	}
+
+	public void setTheme(BlockState new_state, int i) {
+		if(!Objects.equals(first_state, new_state)) {
+			first_state = new_state;
 			markDirtyAndDispatch();
 		}
 	}
 
-	public boolean hasSpentGlowstoneDust() {
-		return (bitfield & SPENT_GLOWSTONE_DUST_MASK) != 0;
+	/* --------------------------------------------------- ADDONS --------------------------------------------------- */
+	public boolean emitsLight() {
+		return (bit_field & LIGHT_MASK) != 0;
 	}
 	
-	public void spentGlowstoneDust() {
-		bitfield |= SPENT_GLOWSTONE_DUST_MASK;
+	public void toggleLight() {
+		if (emitsLight()) bit_field &= ~LIGHT_MASK;
+		else bit_field |= LIGHT_MASK;
 		markDirtyAndDispatch();
 	}
 	
-	public boolean hasSpentRedstoneTorch() {
-		return (bitfield & SPENT_REDSTONE_TORCH_MASK) != 0;
-	}
+	public void toggleRedstone() {
+		if (emitsRedstone()) bit_field &= ~REDSTONE_MASK;
+		else bit_field |= REDSTONE_MASK;
 
-	public void spentRedstoneTorch() {
-		bitfield |= SPENT_REDSTONE_TORCH_MASK;
-		markDirtyAndDispatch();
-	}
-	
-	public boolean hasSpentPoppedChorus() {
-		return (bitfield & SPENT_POPPED_CHORUS_MASK) != 0;
-	}
-	
-	public void spentPoppedChorus() {
-		bitfield |= SPENT_POPPED_CHORUS_MASK;
+		if(world != null) world.updateNeighbors(pos, getCachedState().getBlock());
 		markDirtyAndDispatch();
 	}
 
 	public boolean emitsRedstone() {
-		return (bitfield & EMITS_REDSTONE_MASK) != 0;
+		return (bit_field & REDSTONE_MASK) != 0;
 	}
 	
-	public void setEmitsRedstone(boolean nextEmitsRedstone) {
-		boolean currentlyEmitsRedstone = emitsRedstone();
+	public void toggleSolidity() {
+		if (isSolid()) bit_field &= ~SOLIDITY_MASK;
+		else bit_field |= SOLIDITY_MASK;
 
-		if(currentlyEmitsRedstone != nextEmitsRedstone) {
-			if(currentlyEmitsRedstone) bitfield &= ~EMITS_REDSTONE_MASK;
-			else bitfield |= EMITS_REDSTONE_MASK;
+		if(world != null) world.setBlockState(pos, getCachedState());
 		markDirtyAndDispatch();
-			if(world != null) world.updateNeighbors(pos, getCachedState().getBlock());
-		}
 	}
 	
 	public boolean isSolid() {
-		return (bitfield & IS_SOLID_MASK) != 0;
+		return (bit_field & SOLIDITY_MASK) != 0;
 	}
 
-	public void setSolidity(boolean nextSolid) {
-		boolean currentlySolid = isSolid();
-		
-		if(currentlySolid != nextSolid) {
-			if(currentlySolid) bitfield &= ~IS_SOLID_MASK;
-			else bitfield |= IS_SOLID_MASK;
-			markDirtyAndDispatch();
-			if(world != null) world.setBlockState(pos, getCachedState()); //do i need to invalidate any shape caches or something
-		}
-	}
-	
-	//<standard blockentity boilerplate>
 	@Nullable
 	@Override
 	public Packet<ClientPlayPacketListener> toUpdatePacket() {
@@ -195,8 +162,6 @@ public class ReFramedEntity extends BlockEntity implements ThemeableBlockEntity
 	
 	@Override
 	public NbtCompound toInitialChunkDataNbt() {
-		//TERRIBLE yarn name, this is "getUpdateTag", it's the nbt that will be sent to clients
-		//and it just calls "writeNbt"
 		return createNbt();
 	}
 	
@@ -208,5 +173,4 @@ public class ReFramedEntity extends BlockEntity implements ThemeableBlockEntity
 		markDirty();
 		dispatch();
 	}
-	//</standard blockentity boilerplate>
 }

src/main/java/fr/adrien1106/reframed/block/ReFramedFenceBlock.java

@@ -1,87 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.FenceBlock;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedFenceBlock extends FenceBlock implements BlockEntityProvider {
-	public ReFramedFenceBlock(Settings settings) {
-		super(settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-	}
-	
-	@Nullable
-	@Override
-	public BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return ReFramedInteractionUtil.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getStrongRedstonePower(state, view, pos, dir);
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedFenceGateBlock.java

@@ -1,98 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import fr.adrien1106.reframed.util.ReframedInteractible;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.FenceGateBlock;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.block.WoodType;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedFenceGateBlock extends FenceGateBlock implements BlockEntityProvider, ReframedInteractible {
-	public ReFramedFenceGateBlock(Settings settings, WoodType woodType) {
-		super(woodType, settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-	}
-	
-	public ReFramedFenceGateBlock(Settings settings) {
-		this(settings, WoodType.OAK);
-	}
-	
-	@Nullable
-	@Override
-	public BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return ReFramedInteractionUtil.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getStrongRedstonePower(state, view, pos, dir);
-	}
-	
-	@Override
-	public boolean canAddRedstoneEmission(BlockState state, BlockView view, BlockPos pos) {
-		return false;
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedHalfStairBlock.java

@@ -0,0 +1,194 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.generator.GBlockstate;
+import fr.adrien1106.reframed.util.VoxelHelper;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.blocks.Corner;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.data.client.BlockStateSupplier;
+import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapedRecipeJsonBuilder;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.function.BooleanBiFunction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.util.shape.VoxelShapes;
+import net.minecraft.world.BlockView;
+import org.jetbrains.annotations.Nullable;
+
+import static fr.adrien1106.reframed.util.VoxelHelper.VoxelListBuilder;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.CORNER;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.CORNER_FACE;
+import static fr.adrien1106.reframed.util.blocks.Corner.*;
+import static net.minecraft.data.client.VariantSettings.Rotation.*;
+
+public class ReFramedHalfStairBlock extends WaterloggableReFramedBlock implements BlockStateProvider {
+
+    public static final VoxelShape[] HALF_STAIR_VOXELS;
+
+    private record ModelCacheKey(Corner corner, int face) {}
+
+    public ReFramedHalfStairBlock(Settings settings) {
+        super(settings);
+        setDefaultState(getDefaultState().with(CORNER, NORTH_EAST_DOWN).with(CORNER_FACE, 0));
+    }
+
+    @Override
+    public Object getModelCacheKey(BlockState state) {
+        return new ModelCacheKey(state.get(CORNER), state.get(CORNER_FACE));
+    }
+
+    @Override
+    public int getModelStateCount() {
+        return 24;
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(CORNER,CORNER_FACE));
+    }
+
+    @Override
+    public @Nullable BlockState getPlacementState(ItemPlacementContext ctx) {
+        Corner corner = BlockHelper.getPlacementCorner(ctx);
+        return super.getPlacementState(ctx)
+            .with(CORNER, corner)
+            .with(CORNER_FACE, corner.getDirectionIndex(ctx.getSide().getOpposite()));
+    }
+
+    @Override
+    public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
+        return HALF_STAIR_VOXELS[state.get(CORNER_FACE) + state.get(CORNER).getID() * 3];
+    }
+
+    @Override
+    public BlockStateSupplier getMultipart() {
+        return getHalfStairMultipart(
+            this,
+            ReFramed.id("half_stair_down_special"),
+            ReFramed.id("half_stair_side_special")
+        );
+    }
+
+    public static BlockStateSupplier getHalfStairMultipart(Block block, Identifier model_down, Identifier model_side) {
+        return MultipartBlockStateSupplier.create(block)
+            .with(GBlockstate.when(CORNER, NORTH_EAST_DOWN, CORNER_FACE, 1),
+                GBlockstate.variant(model_side, true, R0, R0))
+            .with(GBlockstate.when(CORNER, NORTH_EAST_DOWN, CORNER_FACE, 0),
+                GBlockstate.variant(model_side, true, R90, R270))
+            .with(GBlockstate.when(CORNER, NORTH_EAST_DOWN, CORNER_FACE, 2),
+                GBlockstate.variant(model_down, true, R0, R0))
+
+            .with(GBlockstate.when(CORNER, EAST_SOUTH_DOWN, CORNER_FACE, 1),
+                GBlockstate.variant(model_side, true, R0, R90))
+            .with(GBlockstate.when(CORNER, EAST_SOUTH_DOWN, CORNER_FACE, 0),
+                GBlockstate.variant(model_side, true, R90, R0))
+            .with(GBlockstate.when(CORNER, EAST_SOUTH_DOWN, CORNER_FACE, 2),
+                GBlockstate.variant(model_down, true, R0, R90))
+
+            .with(GBlockstate.when(CORNER, SOUTH_WEST_DOWN, CORNER_FACE, 1),
+                GBlockstate.variant(model_side, true, R0, R180))
+            .with(GBlockstate.when(CORNER, SOUTH_WEST_DOWN, CORNER_FACE, 0),
+                GBlockstate.variant(model_side, true, R90, R90))
+            .with(GBlockstate.when(CORNER, SOUTH_WEST_DOWN, CORNER_FACE, 2),
+                GBlockstate.variant(model_down, true, R0, R180))
+
+            .with(GBlockstate.when(CORNER, WEST_NORTH_DOWN, CORNER_FACE, 1),
+                GBlockstate.variant(model_side, true, R0, R270))
+            .with(GBlockstate.when(CORNER, WEST_NORTH_DOWN, CORNER_FACE, 0),
+                GBlockstate.variant(model_side, true, R90, R180))
+            .with(GBlockstate.when(CORNER, WEST_NORTH_DOWN, CORNER_FACE, 2),
+                GBlockstate.variant(model_down, true, R0, R270))
+
+            .with(GBlockstate.when(CORNER, EAST_SOUTH_UP, CORNER_FACE, 0),
+                GBlockstate.variant(model_side, true, R180, R0))
+            .with(GBlockstate.when(CORNER, EAST_SOUTH_UP, CORNER_FACE, 1),
+                GBlockstate.variant(model_side, true, R270, R90))
+            .with(GBlockstate.when(CORNER, EAST_SOUTH_UP, CORNER_FACE, 2),
+                GBlockstate.variant(model_down, true, R180, R0))
+
+            .with(GBlockstate.when(CORNER, SOUTH_WEST_UP, CORNER_FACE, 0),
+                GBlockstate.variant(model_side, true, R180, R90))
+            .with(GBlockstate.when(CORNER, SOUTH_WEST_UP, CORNER_FACE, 1),
+                GBlockstate.variant(model_side, true, R270, R180))
+            .with(GBlockstate.when(CORNER, SOUTH_WEST_UP, CORNER_FACE, 2),
+                GBlockstate.variant(model_down, true, R180, R90))
+
+            .with(GBlockstate.when(CORNER, WEST_NORTH_UP, CORNER_FACE, 0),
+                GBlockstate.variant(model_side, true, R180, R180))
+            .with(GBlockstate.when(CORNER, WEST_NORTH_UP, CORNER_FACE, 1),
+                GBlockstate.variant(model_side, true, R270, R270))
+            .with(GBlockstate.when(CORNER, WEST_NORTH_UP, CORNER_FACE, 2),
+                GBlockstate.variant(model_down, true, R180, R180))
+
+            .with(GBlockstate.when(CORNER, NORTH_EAST_UP, CORNER_FACE, 0),
+                GBlockstate.variant(model_side, true, R180, R270))
+            .with(GBlockstate.when(CORNER, NORTH_EAST_UP, CORNER_FACE, 1),
+                GBlockstate.variant(model_side, true, R270, R0))
+            .with(GBlockstate.when(CORNER, NORTH_EAST_UP, CORNER_FACE, 2),
+                GBlockstate.variant(model_down, true, R180, R270));
+    }
+
+    @Override
+    public void setRecipe(RecipeExporter exporter) {
+        RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE, 2);
+        ShapedRecipeJsonBuilder
+            .create(RecipeCategory.BUILDING_BLOCKS, this, 4)
+            .pattern("I  ")
+            .pattern("II ")
+            .input('I', ReFramed.CUBE)
+            .criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+            .criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+            .offerTo(exporter);
+    }
+
+    static {
+        final VoxelShape HALF_STAIR = VoxelShapes.combineAndSimplify(
+            createCuboidShape(8, 0, 0, 16, 16, 8),
+            createCuboidShape(0, 0, 0, 8, 8, 8),
+            BooleanBiFunction.OR
+        );
+        HALF_STAIR_VOXELS = VoxelListBuilder.create(HALF_STAIR, 24)
+            .add(0 , VoxelHelper::rotateY, VoxelHelper::mirrorZ)
+            .add(0 , VoxelHelper::rotateCX, VoxelHelper::mirrorZ)
+
+            .add(0 , VoxelHelper::rotateY)
+            .add(1 , VoxelHelper::rotateY)
+            .add(2 , VoxelHelper::rotateY)
+
+            .add(3 , VoxelHelper::rotateY)
+            .add(4 , VoxelHelper::rotateY)
+            .add(5 , VoxelHelper::rotateY)
+
+            .add(6 , VoxelHelper::rotateY)
+            .add(7 , VoxelHelper::rotateY)
+            .add(8 , VoxelHelper::rotateY)
+
+            .add(0 , VoxelHelper::mirrorY)
+            .add(1 , VoxelHelper::mirrorY)
+            .add(2 , VoxelHelper::mirrorY)
+
+            .add(12, VoxelHelper::rotateY)
+            .add(13, VoxelHelper::rotateY)
+            .add(14, VoxelHelper::rotateY)
+
+            .add(15, VoxelHelper::rotateY)
+            .add(16, VoxelHelper::rotateY)
+            .add(17, VoxelHelper::rotateY)
+
+            .add(18, VoxelHelper::rotateY)
+            .add(19, VoxelHelper::rotateY)
+            .add(20, VoxelHelper::rotateY)
+            .build();
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedHalfStairsSlabBlock.java

@@ -0,0 +1,103 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.blocks.Corner;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.data.client.BlockStateSupplier;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapelessRecipeJsonBuilder;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.world.BlockView;
+import org.jetbrains.annotations.Nullable;
+
+import static fr.adrien1106.reframed.block.ReFramedHalfStairBlock.HALF_STAIR_VOXELS;
+import static fr.adrien1106.reframed.block.ReFramedHalfStairBlock.getHalfStairMultipart;
+import static fr.adrien1106.reframed.block.ReFramedSlabBlock.getSlabShape;
+import static fr.adrien1106.reframed.block.ReFramedSmallCubeBlock.SMALL_CUBE_VOXELS;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.CORNER;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.CORNER_FACE;
+import static fr.adrien1106.reframed.util.blocks.Corner.NORTH_EAST_DOWN;
+import static net.minecraft.util.shape.VoxelShapes.empty;
+
+public class ReFramedHalfStairsSlabBlock extends WaterloggableReFramedDoubleBlock implements BlockStateProvider {
+
+    private record ModelCacheKey(Corner corner, int face) {}
+
+    public ReFramedHalfStairsSlabBlock(Settings settings) {
+        super(settings);
+        setDefaultState(getDefaultState().with(CORNER, NORTH_EAST_DOWN).with(CORNER_FACE, 0));
+    }
+
+    @Override
+    public Object getModelCacheKey(BlockState state) {
+        return new ModelCacheKey(state.get(CORNER), state.get(CORNER_FACE));
+    }
+
+    @Override
+    public int getModelStateCount() {
+        return 24;
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(CORNER,CORNER_FACE));
+    }
+
+    @Override
+    public @Nullable BlockState getPlacementState(ItemPlacementContext ctx) {
+        Corner corner = BlockHelper.getPlacementCorner(ctx);
+        return super.getPlacementState(ctx)
+            .with(CORNER, corner)
+            .with(CORNER_FACE, corner.getDirectionIndex(ctx.getSide().getOpposite()));
+    }
+
+    @Override
+    public VoxelShape getCullingShape(BlockState state, BlockView view, BlockPos pos) {
+        return isGhost(view, pos) ? empty(): getSlabShape(state.get(CORNER).getDirection(state.get(CORNER_FACE)));
+    }
+
+    @Override
+    public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
+        return getSlabShape(state.get(CORNER).getDirection(state.get(CORNER_FACE)));
+    }
+
+    @Override
+    public VoxelShape getShape(BlockState state, int i) {
+        Corner corner = state.get(CORNER);
+        int face = state.get(CORNER_FACE);
+        return i == 2
+            ? SMALL_CUBE_VOXELS[corner.getOpposite(face).getID()]
+            : HALF_STAIR_VOXELS[face + corner.getID() * 3];
+    }
+
+    @Override
+    public BlockStateSupplier getMultipart() {
+        return getHalfStairMultipart(
+            this,
+            ReFramed.id("half_stairs_slab_down_special"),
+            ReFramed.id("half_stairs_slab_side_special")
+        );
+    }
+
+    @Override
+    public void setRecipe(RecipeExporter exporter) {
+        RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE, 2);
+        ShapelessRecipeJsonBuilder
+            .create(RecipeCategory.BUILDING_BLOCKS, this)
+            .input(ReFramed.HALF_STAIR)
+            .input(ReFramed.SMALL_CUBE)
+            .criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+            .criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+            .offerTo(exporter);
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedHalfStairsStairBlock.java

@@ -0,0 +1,138 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.generator.GBlockstate;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.blocks.Corner;
+import fr.adrien1106.reframed.util.blocks.Edge;
+import fr.adrien1106.reframed.util.blocks.StairShape;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.data.client.BlockStateSupplier;
+import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapelessRecipeJsonBuilder;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.world.BlockView;
+import org.jetbrains.annotations.Nullable;
+
+import static fr.adrien1106.reframed.block.ReFramedHalfStairBlock.HALF_STAIR_VOXELS;
+import static fr.adrien1106.reframed.block.ReFramedStairBlock.getStairShape;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.EDGE;
+import static fr.adrien1106.reframed.util.blocks.Edge.*;
+import static net.minecraft.data.client.VariantSettings.Rotation.*;
+import static net.minecraft.util.shape.VoxelShapes.empty;
+
+public class ReFramedHalfStairsStairBlock extends WaterloggableReFramedDoubleBlock implements BlockStateProvider {
+    public ReFramedHalfStairsStairBlock(Settings settings) {
+        super(settings);
+        setDefaultState(getDefaultState().with(EDGE, NORTH_DOWN));
+    }
+
+    @Override
+    public Object getModelCacheKey(BlockState state) {
+        return state.get(EDGE);
+    }
+
+    @Override
+    public int getModelStateCount() {
+        return 12;
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(EDGE));
+    }
+
+    @Nullable
+    @Override
+    public BlockState getPlacementState(ItemPlacementContext ctx) {
+        return super.getPlacementState(ctx).with(EDGE, BlockHelper.getPlacementEdge(ctx));
+    }
+
+    @Override
+    public VoxelShape getCullingShape(BlockState state, BlockView view, BlockPos pos) {
+        return isGhost(view, pos) ? empty(): getStairShape(state.get(EDGE), StairShape.STRAIGHT);
+    }
+
+    @Override
+    public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
+        return getStairShape(state.get(EDGE), StairShape.STRAIGHT);
+    }
+
+    @Override
+    public VoxelShape getShape(BlockState state, int i) {
+        Edge edge = state.get(EDGE);
+        Direction side = i == 1
+            ? edge.getRightDirection()
+            : edge.getLeftDirection();
+        Corner corner = Corner.getByDirections(
+            edge.getFirstDirection(),
+            edge.getSecondDirection(),
+            side
+
+        );
+        return HALF_STAIR_VOXELS[corner.getID() * 3 + corner.getDirectionIndex(side)];
+    }
+
+    @Override
+    public int getTopThemeIndex(BlockState state) {
+        return 2;
+    }
+
+    @Override
+    public BlockStateSupplier getMultipart() {
+        Identifier model_id = ReFramed.id("half_stairs_stair_down_special");
+        Identifier side_model_id = ReFramed.id("half_stairs_stair_side_special");
+        Identifier reverse_model_id = ReFramed.id("half_stairs_stair_reverse_special");
+        return MultipartBlockStateSupplier.create(this)
+            /* X AXIS */
+            .with(GBlockstate.when(EDGE, NORTH_DOWN),
+                GBlockstate.variant(side_model_id, true, R90, R180))
+            .with(GBlockstate.when(EDGE, DOWN_SOUTH),
+                GBlockstate.variant(side_model_id, true, R0, R180))
+            .with(GBlockstate.when(EDGE, SOUTH_UP),
+                GBlockstate.variant(side_model_id, true, R270, R180))
+            .with(GBlockstate.when(EDGE, UP_NORTH),
+                GBlockstate.variant(side_model_id, true, R180, R180))
+            /* Y AXIS */
+            .with(GBlockstate.when(EDGE, NORTH_EAST),
+                GBlockstate.variant(model_id, true, R0, R0))
+            .with(GBlockstate.when(EDGE, EAST_SOUTH),
+                GBlockstate.variant(model_id, true, R0, R90))
+            .with(GBlockstate.when(EDGE, SOUTH_WEST),
+                GBlockstate.variant(model_id, true, R0, R180))
+            .with(GBlockstate.when(EDGE, WEST_NORTH),
+                GBlockstate.variant(model_id, true, R0, R270))
+            /* Z AXIS */
+            .with(GBlockstate.when(EDGE, DOWN_EAST),
+                GBlockstate.variant(side_model_id, true, R0, R90))
+            .with(GBlockstate.when(EDGE, EAST_UP),
+                GBlockstate.variant(reverse_model_id, true, R180, R270))
+            .with(GBlockstate.when(EDGE, UP_WEST),
+                GBlockstate.variant(side_model_id, true, R180, R90))
+            .with(GBlockstate.when(EDGE, WEST_DOWN),
+                GBlockstate.variant(reverse_model_id, true, R0, R270));
+    }
+
+    @Override
+    public void setRecipe(RecipeExporter exporter) {
+        RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE, 2);
+        ShapelessRecipeJsonBuilder
+            .create(RecipeCategory.BUILDING_BLOCKS, this)
+            .input(ReFramed.HALF_STAIR, 2)
+            .criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+            .criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+            .offerTo(exporter);
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedLayerBlock.java

@@ -0,0 +1,117 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.GBlockstate;
+import fr.adrien1106.reframed.util.VoxelHelper;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.world.BlockView;
+import org.jetbrains.annotations.Nullable;
+
+import static fr.adrien1106.reframed.util.VoxelHelper.VoxelListBuilder;
+import static net.minecraft.data.client.VariantSettings.Rotation.*;
+import static net.minecraft.state.property.Properties.FACING;
+import static net.minecraft.state.property.Properties.LAYERS;
+
+public class ReFramedLayerBlock extends ReFramedSlabBlock {
+
+    public static final VoxelShape[] LAYER_VOXELS;
+    private record ModelCacheKey(Direction face, int layer) {}
+
+    public ReFramedLayerBlock(Settings settings) {
+        super(settings);
+        setDefaultState(getDefaultState().with(LAYERS, 1));
+    }
+
+    @Override
+    public Object getModelCacheKey(BlockState state) {
+        return new ModelCacheKey(state.get(FACING), state.get(LAYERS));
+    }
+
+    @Override
+    public int getModelStateCount() {
+        return 48;
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(LAYERS));
+    }
+
+    @Override
+    public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
+        return LAYER_VOXELS[state.get(FACING).getId() * 8 + state.get(LAYERS) - 1];
+    }
+
+    @Override
+    public boolean canReplace(BlockState state, ItemPlacementContext ctx) {
+        return !(!state.isOf(this) || ctx.getPlayer().isSneaking() || state.get(LAYERS) == 8);
+    }
+
+    @Override
+    public @Nullable BlockState getPlacementState(ItemPlacementContext ctx) {
+        BlockState previous = ctx.getWorld().getBlockState(ctx.getBlockPos());
+        if (!previous.isOf(this)) return super.getPlacementState(ctx);
+        return previous.with(LAYERS, previous.get(LAYERS) + 1);
+    }
+
+    @Override
+    public MultipartBlockStateSupplier getMultipart() {
+        String model_pattern = "layer_x_special";
+        MultipartBlockStateSupplier supplier = MultipartBlockStateSupplier.create(this);
+        for (int i = 1; i <= 8; i++) {
+            Identifier model = ReFramed.id(model_pattern.replace("x", i + ""));
+            supplier
+                .with(GBlockstate.when(FACING, Direction.DOWN, LAYERS, i),
+                    GBlockstate.variant(model, true, R0, R0))
+                .with(GBlockstate.when(FACING, Direction.SOUTH, LAYERS, i),
+                    GBlockstate.variant(model, true, R90, R0))
+                .with(GBlockstate.when(FACING, Direction.UP, LAYERS, i),
+                    GBlockstate.variant(model, true, R180, R0))
+                .with(GBlockstate.when(FACING, Direction.NORTH, LAYERS, i),
+                    GBlockstate.variant(model, true, R270, R0))
+                .with(GBlockstate.when(FACING, Direction.WEST, LAYERS, i),
+                    GBlockstate.variant(model, true, R90, R90))
+                .with(GBlockstate.when(FACING, Direction.EAST, LAYERS, i),
+                    GBlockstate.variant(model, true, R90, R270));
+        }
+        return supplier;
+    }
+
+    static {
+        VoxelListBuilder builder = VoxelListBuilder.create(createCuboidShape(0, 0, 0, 16, 2, 16), 48)
+            .add(createCuboidShape(0, 0, 0, 16, 4, 16))
+            .add(createCuboidShape(0, 0, 0, 16, 6, 16))
+            .add(createCuboidShape(0, 0, 0, 16, 8, 16))
+            .add(createCuboidShape(0, 0, 0, 16, 10, 16))
+            .add(createCuboidShape(0, 0, 0, 16, 12, 16))
+            .add(createCuboidShape(0, 0, 0, 16, 14, 16))
+            .add(createCuboidShape(0, 0, 0, 16, 16, 16));
+
+        for (int i = 0; i < 8; i++) {
+            builder.add(i, VoxelHelper::mirrorY);
+        }
+        for (int i = 0; i < 8; i++) {
+            builder.add(i, VoxelHelper::rotateX);
+        }
+        for (int i = 0; i < 8; i++) {
+            builder.add(i, VoxelHelper::rotateCX);
+        }
+        for (int i = 0; i < 8; i++) {
+            builder.add(i, VoxelHelper::rotateCZ);
+        }
+        for (int i = 0; i < 8; i++) {
+            builder.add(i, VoxelHelper::rotateZ);
+        }
+
+        LAYER_VOXELS = builder.build();
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedLeverBlock.java

@@ -1,90 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.LeverBlock;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedLeverBlock extends LeverBlock implements BlockEntityProvider {
-	public ReFramedLeverBlock(Settings settings) {
-		super(settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-	}
-	
-	@Nullable
-	@Override
-	public BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return super.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		boolean a = 0 != super.getWeakRedstonePower(state, view, pos, dir);
-		boolean b = 0 != ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-		return (a ^ b) ? 15 : 0;
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		if(getDirection(state) != dir) return 0;
-		else return getWeakRedstonePower(state, view, pos, dir);
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedPaneBlock.java

@@ -1,87 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.PaneBlock;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedPaneBlock extends PaneBlock implements BlockEntityProvider {
-	public ReFramedPaneBlock(Settings settings) {
-		super(settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-	}
-	
-	@Override
-	public @Nullable BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-		super.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return ReFramedInteractionUtil.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getStrongRedstonePower(state, view, pos, dir);
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedPostBlock.java

@@ -1,57 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.state.StateManager;
-import net.minecraft.state.property.Properties;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedPostBlock extends WaterloggableReFramedBlock {
-	public ReFramedPostBlock(Settings settings) {
-		super(settings);
-		
-		setDefaultState(getDefaultState().with(Properties.AXIS, Direction.Axis.Y));
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(builder.add(Properties.AXIS));
-	}
-	
-	@Override
-	public @Nullable BlockState getPlacementState(ItemPlacementContext ctx) {
-		BlockState sup = super.getPlacementState(ctx);
-		if(sup != null) sup = sup.with(Properties.AXIS, ctx.getSide().getAxis());
-		return sup;
-	}
-	
-	protected static final VoxelShape SHAPE_X = createCuboidShape(0, 6, 6, 16, 10, 10);
-	protected static final VoxelShape SHAPE_Y = createCuboidShape(6, 0, 6, 10, 16, 10);
-	protected static final VoxelShape SHAPE_Z = createCuboidShape(6, 6, 0, 10, 10, 16);
-	
-	protected VoxelShape shap(BlockState state) {
-		return switch(state.get(Properties.AXIS)) {
-			case X -> SHAPE_X;
-			case Y -> SHAPE_Y;
-			case Z -> SHAPE_Z;
-		};
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), shap(state));
-	}
-	
-	@Override
-	public VoxelShape getOutlineShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return shap(state);
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedPressurePlateBlock.java

@@ -1,89 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import net.minecraft.block.*;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedPressurePlateBlock extends PressurePlateBlock implements BlockEntityProvider {
-	public ReFramedPressurePlateBlock(Settings settings, BlockSetType blockSetType) {
-		super(blockSetType, settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-	}
-	
-	public ReFramedPressurePlateBlock(Settings settings) {
-		this(settings, BlockSetType.OAK);
-	}
-	
-	@Override
-	public @Nullable BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-		super.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return super.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		boolean a = 0 != super.getWeakRedstonePower(state, view, pos, dir);
-		boolean b = 0 != ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-		return (a ^ b) ? 15 : 0;
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return dir == Direction.UP ? getWeakRedstonePower(state, view, pos, dir) : 0;
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedSlabBlock.java

@@ -1,11 +1,20 @@
 package fr.adrien1106.reframed.block;
 
-import fr.adrien1106.reframed.generator.MultipartBlockStateProvider;
-import net.minecraft.block.*;
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.generator.GBlockstate;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
 import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapedRecipeJsonBuilder;
 import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
 import net.minecraft.state.StateManager;
-import net.minecraft.state.property.Properties;
+import net.minecraft.util.Identifier;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Direction;
 import net.minecraft.util.shape.VoxelShape;
@@ -13,34 +22,51 @@ import net.minecraft.util.shape.VoxelShapes;
 import net.minecraft.world.BlockView;
 import org.jetbrains.annotations.Nullable;
 
-public class ReFramedSlabBlock extends WaterloggableReFramedBlock implements MultipartBlockStateProvider {
+import static net.minecraft.data.client.VariantSettings.Rotation.*;
+import static net.minecraft.state.property.Properties.FACING;
 
-	private static final VoxelShape DOWN = VoxelShapes.cuboid(0f, 0f, 0f, 1f, 0.5f, 1f);
-	private static final VoxelShape UP = VoxelShapes.cuboid(0f, 0.5f, 0f, 1f, 1f, 1f);
-	private static final VoxelShape NORTH = VoxelShapes.cuboid(0f, 0f, 0f, 1f, 1f, 0.5f);
-	private static final VoxelShape SOUTH = VoxelShapes.cuboid(0f, 0f, 0.5f, 1f, 1f, 1f);
-	private static final VoxelShape EAST = VoxelShapes.cuboid(0.5f, 0f, 0f, 1f, 1f, 1f);
-	private static final VoxelShape WEST = VoxelShapes.cuboid(0f, 0f, 0f, 0.5f, 1f, 1f);
+public class ReFramedSlabBlock extends WaterloggableReFramedBlock implements BlockStateProvider {
+
+	protected static final VoxelShape DOWN = VoxelShapes.cuboid(0f, 0f, 0f, 1f, 0.5f, 1f);
+	protected static final VoxelShape UP = VoxelShapes.cuboid(0f, 0.5f, 0f, 1f, 1f, 1f);
+	protected static final VoxelShape NORTH = VoxelShapes.cuboid(0f, 0f, 0f, 1f, 1f, 0.5f);
+	protected static final VoxelShape SOUTH = VoxelShapes.cuboid(0f, 0f, 0.5f, 1f, 1f, 1f);
+	protected static final VoxelShape EAST = VoxelShapes.cuboid(0.5f, 0f, 0f, 1f, 1f, 1f);
+	protected static final VoxelShape WEST = VoxelShapes.cuboid(0f, 0f, 0f, 0.5f, 1f, 1f);
 
 	public ReFramedSlabBlock(Settings settings) {
 		super(settings);
-		setDefaultState(getDefaultState().with(Properties.FACING, Direction.DOWN));
+		setDefaultState(getDefaultState().with(FACING, Direction.DOWN));
+	}
+
+	@Override
+	public Object getModelCacheKey(BlockState state) {
+		return state.get(FACING);
+	}
+
+	@Override
+	public int getModelStateCount() {
+		return 6;
 	}
 	
 	@Override
 	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(builder.add(Properties.FACING));
+		super.appendProperties(builder.add(FACING));
 	}
 	
 	@Nullable
 	@Override
 	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return super.getPlacementState(ctx).with(Properties.FACING, ctx.getSide().getOpposite());
+		return super.getPlacementState(ctx).with(FACING, ctx.getSide().getOpposite());
 	}
 
 	@Override
 	public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
-		return switch (state.get(Properties.FACING)) {
+		return getSlabShape(state.get(FACING));
+	}
+
+	public static VoxelShape getSlabShape(Direction side) {
+		return switch (side) {
 			case DOWN -> DOWN;
 			case UP -> UP;
 			case NORTH -> NORTH;
@@ -52,6 +78,31 @@ public class ReFramedSlabBlock extends WaterloggableReFramedBlock implements Mul
 
 	@Override
 	public MultipartBlockStateSupplier getMultipart() {
-		return null;
+		Identifier model_id = ReFramed.id("slab_special");
+		return MultipartBlockStateSupplier.create(this)
+			.with(GBlockstate.when(FACING, Direction.DOWN),
+				GBlockstate.variant(model_id, true, R0, R0))
+			.with(GBlockstate.when(FACING, Direction.SOUTH),
+				GBlockstate.variant(model_id, true, R90, R0))
+			.with(GBlockstate.when(FACING, Direction.UP),
+				GBlockstate.variant(model_id, true, R180, R0))
+			.with(GBlockstate.when(FACING, Direction.NORTH),
+				GBlockstate.variant(model_id, true, R270, R0))
+			.with(GBlockstate.when(FACING, Direction.WEST),
+				GBlockstate.variant(model_id, true, R90, R90))
+			.with(GBlockstate.when(FACING, Direction.EAST),
+				GBlockstate.variant(model_id, true, R90, R270));
+	}
+
+	@Override
+	public void setRecipe(RecipeExporter exporter) {
+		RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE, 2);
+		ShapedRecipeJsonBuilder
+			.create(RecipeCategory.BUILDING_BLOCKS, this, 6)
+			.pattern("III")
+			.input('I', ReFramed.CUBE)
+			.criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+			.criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+			.offerTo(exporter);
 	}
 }

src/main/java/fr/adrien1106/reframed/block/ReFramedSlabsCubeBlock.java

@@ -0,0 +1,91 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.generator.GBlockstate;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapelessRecipeJsonBuilder;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.math.Direction;
+import net.minecraft.util.shape.VoxelShape;
+import org.jetbrains.annotations.Nullable;
+
+import static fr.adrien1106.reframed.block.ReFramedSlabBlock.*;
+import static net.minecraft.data.client.VariantSettings.Rotation.R0;
+import static net.minecraft.data.client.VariantSettings.Rotation.R90;
+import static net.minecraft.state.property.Properties.AXIS;
+
+public class ReFramedSlabsCubeBlock extends ReFramedDoubleBlock implements BlockStateProvider {
+
+    public ReFramedSlabsCubeBlock(Settings settings) {
+        super(settings);
+        setDefaultState(getDefaultState().with(AXIS, Direction.Axis.Y));
+    }
+
+    @Override
+    public Object getModelCacheKey(BlockState state) {
+        return state.get(AXIS);
+    }
+
+    @Override
+    public int getModelStateCount() {
+        return 3;
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(AXIS));
+    }
+
+    @Nullable
+    @Override
+    public BlockState getPlacementState(ItemPlacementContext ctx) {
+        return super.getPlacementState(ctx).with(AXIS, ctx.getSide().getAxis());
+    }
+
+    @Override
+    public VoxelShape getShape(BlockState state, int i) {
+        return switch (state.get(AXIS)) {
+            case Y -> i == 2 ? UP    : DOWN;
+            case Z -> i == 2 ? NORTH : SOUTH;
+            case X -> i == 2 ? EAST  : WEST;
+        };
+    }
+
+    @Override
+    public int getTopThemeIndex(BlockState state) {
+        // when the side is shared just return one
+        return state.get(AXIS) == Direction.Axis.Y ? 2: super.getTopThemeIndex(state);
+    }
+
+    @Override
+    public MultipartBlockStateSupplier getMultipart() {
+        Identifier model_id = ReFramed.id("double_slab_special");
+        return MultipartBlockStateSupplier.create(this)
+            .with(GBlockstate.when(AXIS, Direction.Axis.Y),
+                GBlockstate.variant(model_id, true, R0, R0))
+            .with(GBlockstate.when(AXIS, Direction.Axis.Z),
+                GBlockstate.variant(model_id, true, R90, R0))
+            .with(GBlockstate.when(AXIS, Direction.Axis.X),
+                GBlockstate.variant(model_id, true, R90, R90));
+    }
+
+    @Override
+    public void setRecipe(RecipeExporter exporter) {
+        RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE);
+        ShapelessRecipeJsonBuilder
+            .create(RecipeCategory.BUILDING_BLOCKS, this)
+            .input(ReFramed.SLAB, 2)
+            .criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+            .criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+            .offerTo(exporter);
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedSmallCubeBlock.java

@@ -0,0 +1,113 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.generator.GBlockstate;
+import fr.adrien1106.reframed.util.VoxelHelper;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.data.client.BlockStateSupplier;
+import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapelessRecipeJsonBuilder;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.util.shape.VoxelShapes;
+import net.minecraft.world.BlockView;
+import org.jetbrains.annotations.Nullable;
+
+import static fr.adrien1106.reframed.util.VoxelHelper.VoxelListBuilder;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.CORNER;
+import static fr.adrien1106.reframed.util.blocks.Corner.*;
+import static net.minecraft.data.client.VariantSettings.Rotation.*;
+
+public class ReFramedSmallCubeBlock extends WaterloggableReFramedBlock implements BlockStateProvider {
+
+    public static final VoxelShape[] SMALL_CUBE_VOXELS;
+
+    public ReFramedSmallCubeBlock(Settings settings) {
+        super(settings);
+        setDefaultState(getDefaultState().with(CORNER, NORTH_EAST_DOWN));
+    }
+
+    @Override
+    public Object getModelCacheKey(BlockState state) {
+        return state.get(CORNER);
+    }
+
+    @Override
+    public int getModelStateCount() {
+        return 8;
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(CORNER));
+    }
+
+    @Override
+    public @Nullable BlockState getPlacementState(ItemPlacementContext ctx) {
+        return super.getPlacementState(ctx).with(CORNER, BlockHelper.getPlacementCorner(ctx));
+    }
+
+    @Override
+    public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
+        return SMALL_CUBE_VOXELS[state.get(CORNER).getID()];
+    }
+
+    @Override
+    public BlockStateSupplier getMultipart() {
+        Identifier small_cube_id = ReFramed.id("small_cube_special");
+        return MultipartBlockStateSupplier.create(this)
+            .with(GBlockstate.when(CORNER, NORTH_EAST_DOWN),
+                GBlockstate.variant(small_cube_id, true, R0, R0))
+            .with(GBlockstate.when(CORNER, EAST_SOUTH_DOWN),
+                GBlockstate.variant(small_cube_id, true, R0, R90))
+            .with(GBlockstate.when(CORNER, SOUTH_WEST_DOWN),
+                GBlockstate.variant(small_cube_id, true, R0, R180))
+            .with(GBlockstate.when(CORNER, WEST_NORTH_DOWN),
+                GBlockstate.variant(small_cube_id, true, R0, R270))
+            .with(GBlockstate.when(CORNER, EAST_SOUTH_UP),
+                GBlockstate.variant(small_cube_id, true, R180, R0))
+            .with(GBlockstate.when(CORNER, SOUTH_WEST_UP),
+                GBlockstate.variant(small_cube_id, true, R180, R90))
+            .with(GBlockstate.when(CORNER, WEST_NORTH_UP),
+                GBlockstate.variant(small_cube_id, true, R180, R180))
+            .with(GBlockstate.when(CORNER, NORTH_EAST_UP),
+                GBlockstate.variant(small_cube_id, true, R180, R270));
+    }
+
+    @Override
+    public void setRecipe(RecipeExporter exporter) {
+        RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE, 8);
+        ShapelessRecipeJsonBuilder
+            .create(RecipeCategory.BUILDING_BLOCKS, this, 8)
+            .input(ReFramed.CUBE)
+            .criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+            .criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+            .offerTo(exporter);
+    }
+
+    static {
+        final VoxelShape SMALL_CUBE = VoxelShapes.cuboid(.5f, 0f, 0f, 1f, .5f, .5f);
+
+        SMALL_CUBE_VOXELS = VoxelListBuilder.create(SMALL_CUBE, 8)
+            .add(VoxelHelper::rotateY)
+            .add(VoxelHelper::rotateY)
+            .add(VoxelHelper::rotateY)
+
+            .add(SMALL_CUBE, VoxelHelper::mirrorY)
+            .add(VoxelHelper::rotateY)
+            .add(VoxelHelper::rotateY)
+            .add(VoxelHelper::rotateY)
+            .build();
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedSmallCubesStepBlock.java

@@ -0,0 +1,133 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.generator.GBlockstate;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.blocks.Corner;
+import fr.adrien1106.reframed.util.blocks.Edge;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.data.client.BlockStateSupplier;
+import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapelessRecipeJsonBuilder;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.world.BlockView;
+import org.jetbrains.annotations.Nullable;
+
+import static fr.adrien1106.reframed.block.ReFramedSmallCubeBlock.SMALL_CUBE_VOXELS;
+import static fr.adrien1106.reframed.block.ReFramedStepBlock.getStepShape;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.EDGE;
+import static fr.adrien1106.reframed.util.blocks.Edge.*;
+import static net.minecraft.data.client.VariantSettings.Rotation.*;
+import static net.minecraft.util.shape.VoxelShapes.empty;
+
+public class ReFramedSmallCubesStepBlock extends WaterloggableReFramedDoubleBlock implements BlockStateProvider {
+
+    public ReFramedSmallCubesStepBlock(Settings settings) {
+        super(settings);
+        setDefaultState(getDefaultState().with(EDGE, Edge.NORTH_DOWN));
+    }
+
+    @Override
+    public Object getModelCacheKey(BlockState state) {
+        return state.get(EDGE);
+    }
+
+    @Override
+    public int getModelStateCount() {
+        return 12;
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(EDGE));
+    }
+
+    @Nullable
+    @Override
+    public BlockState getPlacementState(ItemPlacementContext ctx) {
+        return super.getPlacementState(ctx).with(EDGE, BlockHelper.getPlacementEdge(ctx));
+    }
+
+    @Override
+    public VoxelShape getCullingShape(BlockState state, BlockView view, BlockPos pos) {
+        return isGhost(view, pos) ? empty(): getStepShape(state.get(EDGE));
+    }
+
+    @Override
+    public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
+        return getStepShape(state.get(EDGE));
+    }
+
+    @Override
+    public VoxelShape getShape(BlockState state, int i) {
+        Edge edge = state.get(EDGE);
+        return SMALL_CUBE_VOXELS[Corner.getByDirections(
+            edge.getFirstDirection(),
+            edge.getSecondDirection(),
+            i == 1
+                ? edge.getRightDirection()
+                : edge.getLeftDirection()
+        ).getID()];
+    }
+
+    @Override
+    public int getTopThemeIndex(BlockState state) {
+        return 2;
+    }
+
+    @Override
+    public BlockStateSupplier getMultipart() {
+        Identifier model_id = ReFramed.id("small_cubes_step_special");
+        Identifier reverse_model_id = ReFramed.id("small_cubes_step_reverse_special");
+        return MultipartBlockStateSupplier.create(this)
+            /* X AXIS */
+            .with(GBlockstate.when(EDGE, DOWN_EAST),
+                GBlockstate.variant(reverse_model_id, true, R0, R0))
+            .with(GBlockstate.when(EDGE, EAST_UP),
+                GBlockstate.variant(model_id, true, R180, R0))
+            .with(GBlockstate.when(EDGE, UP_WEST),
+                GBlockstate.variant(reverse_model_id, true, R180, R180))
+            .with(GBlockstate.when(EDGE, WEST_DOWN),
+                GBlockstate.variant(model_id, true, R0, R180))
+            /* Y AXIS */
+            .with(GBlockstate.when(EDGE, EAST_SOUTH),
+                GBlockstate.variant(model_id, true, R90, R0))
+            .with(GBlockstate.when(EDGE, SOUTH_WEST),
+                GBlockstate.variant(model_id, true, R90, R90))
+            .with(GBlockstate.when(EDGE, WEST_NORTH),
+                GBlockstate.variant(model_id, true, R90, R180))
+            .with(GBlockstate.when(EDGE, NORTH_EAST),
+                GBlockstate.variant(model_id, true, R90, R270))
+            /* Z AXIS */
+            .with(GBlockstate.when(EDGE, DOWN_SOUTH),
+                GBlockstate.variant(reverse_model_id, true, R0, R90))
+            .with(GBlockstate.when(EDGE, NORTH_DOWN),
+                GBlockstate.variant(model_id, true, R0, R270))
+            .with(GBlockstate.when(EDGE, UP_NORTH),
+                GBlockstate.variant(reverse_model_id, true, R180, R270))
+            .with(GBlockstate.when(EDGE, SOUTH_UP),
+                GBlockstate.variant(model_id, true, R180, R90));
+    }
+
+    @Override
+    public void setRecipe(RecipeExporter exporter) {
+        RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE, 4);
+        ShapelessRecipeJsonBuilder
+            .create(RecipeCategory.BUILDING_BLOCKS, this)
+            .input(ReFramed.SMALL_CUBE, 2)
+            .criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+            .criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+            .offerTo(exporter);
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedStairBlock.java

@@ -0,0 +1,433 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.generator.GBlockstate;
+import fr.adrien1106.reframed.util.VoxelHelper;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.blocks.Edge;
+import fr.adrien1106.reframed.util.blocks.StairShape;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.data.client.When;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapedRecipeJsonBuilder;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.function.BooleanBiFunction;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.util.shape.VoxelShapes;
+import net.minecraft.world.BlockView;
+import net.minecraft.world.World;
+import net.minecraft.world.WorldAccess;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.stream.Stream;
+
+import static fr.adrien1106.reframed.util.VoxelHelper.VoxelListBuilder;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.EDGE;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.STAIR_SHAPE;
+import static fr.adrien1106.reframed.util.blocks.Edge.*;
+import static fr.adrien1106.reframed.util.blocks.StairShape.*;
+import static net.minecraft.data.client.VariantSettings.Rotation.*;
+
+public class ReFramedStairBlock extends WaterloggableReFramedBlock implements BlockStateProvider {
+	public static final VoxelShape[] STAIR_VOXELS;
+	private record ModelCacheKey(Edge edge, StairShape shape) {}
+
+	public ReFramedStairBlock(Settings settings) {
+		super(settings);
+		setDefaultState(getDefaultState().with(EDGE, Edge.NORTH_DOWN).with(STAIR_SHAPE, STRAIGHT));
+	}
+
+	@Override
+	public Object getModelCacheKey(BlockState state) {
+		return new ModelCacheKey(state.get(EDGE), state.get(STAIR_SHAPE));
+	}
+
+	@Override
+	public int getModelStateCount() {
+		return 108; // Has 12 * 9 state combination and 52 models still reduces cache size
+	}
+	
+	@Override
+	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+		super.appendProperties(builder.add(EDGE, STAIR_SHAPE));
+	}
+
+	@Override
+	public BlockState getStateForNeighborUpdate(BlockState state, Direction direction, BlockState neighbor_state, WorldAccess world, BlockPos pos, BlockPos moved) {
+		return super.getStateForNeighborUpdate(state, direction, neighbor_state, world, pos, moved)
+			.with(STAIR_SHAPE, BlockHelper.getStairsShape(state.get(EDGE), world, pos));
+	}
+
+	@Nullable
+	@Override // Pretty happy of how clean it is (also got it on first try :) )
+	public BlockState getPlacementState(ItemPlacementContext ctx) {
+		Edge face = BlockHelper.getPlacementEdge(ctx);
+		StairShape shape = BlockHelper.getStairsShape(face, ctx.getWorld(), ctx.getBlockPos());
+		return super.getPlacementState(ctx).with(EDGE, face).with(STAIR_SHAPE, shape);
+	}
+
+	@Override
+	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
+		super.onStateReplaced(state, world, pos, newState, moved);
+
+		if(!state.isOf(newState.getBlock())) world.removeBlockEntity(pos);
+	}
+
+	@Override
+	public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
+		return getStairShape(state.get(EDGE), state.get(STAIR_SHAPE));
+	}
+
+	public static VoxelShape getStairShape(Edge edge, StairShape shape) {
+		return STAIR_VOXELS[edge.getID() * 9 + shape.getID()];
+	}
+
+	@Override
+	public MultipartBlockStateSupplier getMultipart() {
+		return getStairMultipart(this, false);
+	}
+
+	public static MultipartBlockStateSupplier getStairMultipart(Block block, boolean is_double) {
+		String infix = is_double ? "s_cube" : "";
+		Identifier straight_id = ReFramed.id("stair" + infix + "_special");
+		Identifier double_outer_id = ReFramed.id("outers_stair" + infix + "_special");
+		Identifier inner_id = ReFramed.id("inner_stair" + infix + "_special");
+		Identifier outer_id = ReFramed.id("outer_stair" + infix + "_special");
+		Identifier outer_side_id = ReFramed.id("outer_side_stair" + infix + "_special");
+		return MultipartBlockStateSupplier.create(block)
+			/* STRAIGHT X AXIS */
+			.with(GBlockstate.when(EDGE, DOWN_EAST, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R0, R0))
+			.with(GBlockstate.when(EDGE, EAST_UP, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R180, R0))
+			.with(GBlockstate.when(EDGE, UP_WEST, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R180, R180))
+			.with(GBlockstate.when(EDGE, WEST_DOWN, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R0, R180))
+			/* STRAIGHT Y AXIS */
+			.with(GBlockstate.when(EDGE, EAST_SOUTH, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R90, R0))
+			.with(GBlockstate.when(EDGE, SOUTH_WEST, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R90, R90))
+			.with(GBlockstate.when(EDGE, WEST_NORTH, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R90, R180))
+			.with(GBlockstate.when(EDGE, NORTH_EAST, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R90, R270))
+			/* STRAIGHT Z AXIS */
+			.with(GBlockstate.when(EDGE, DOWN_SOUTH, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R0, R90))
+			.with(GBlockstate.when(EDGE, NORTH_DOWN, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R0, R270))
+			.with(GBlockstate.when(EDGE, UP_NORTH, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R180, R270))
+			.with(GBlockstate.when(EDGE, SOUTH_UP, STAIR_SHAPE, STRAIGHT),
+				GBlockstate.variant(straight_id, true, R180, R90))
+			/* INNER BOTTOM */
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, NORTH_DOWN, STAIR_SHAPE, INNER_RIGHT),
+				GBlockstate.when(EDGE, WEST_NORTH, STAIR_SHAPE, INNER_RIGHT),
+			    GBlockstate.when(EDGE, WEST_DOWN, STAIR_SHAPE, INNER_LEFT)),
+				GBlockstate.variant(inner_id, true, R0, R180))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, NORTH_DOWN, STAIR_SHAPE, INNER_LEFT),
+				GBlockstate.when(EDGE, NORTH_EAST, STAIR_SHAPE, INNER_RIGHT),
+				GBlockstate.when(EDGE, DOWN_EAST, STAIR_SHAPE, INNER_LEFT)),
+				GBlockstate.variant(inner_id, true, R0, R270))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, DOWN_SOUTH, STAIR_SHAPE, INNER_LEFT),
+				GBlockstate.when(EDGE, EAST_SOUTH, STAIR_SHAPE, INNER_RIGHT),
+				GBlockstate.when(EDGE, DOWN_EAST, STAIR_SHAPE, INNER_RIGHT)),
+				GBlockstate.variant(inner_id, true, R0, R0))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, DOWN_SOUTH, STAIR_SHAPE, INNER_RIGHT),
+				GBlockstate.when(EDGE, SOUTH_WEST, STAIR_SHAPE, INNER_RIGHT),
+				GBlockstate.when(EDGE, WEST_DOWN, STAIR_SHAPE, INNER_RIGHT)),
+				GBlockstate.variant(inner_id, true, R0, R90))
+			/* INNER TOP */
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, EAST_UP, STAIR_SHAPE, INNER_LEFT),
+				GBlockstate.when(EDGE, NORTH_EAST, STAIR_SHAPE, INNER_LEFT),
+				GBlockstate.when(EDGE, UP_NORTH, STAIR_SHAPE, INNER_LEFT)),
+				GBlockstate.variant(inner_id, true, R180, R0))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, EAST_UP, STAIR_SHAPE, INNER_RIGHT),
+				GBlockstate.when(EDGE, EAST_SOUTH, STAIR_SHAPE, INNER_LEFT),
+				GBlockstate.when(EDGE, SOUTH_UP, STAIR_SHAPE, INNER_LEFT)),
+				GBlockstate.variant(inner_id, true, R180, R90))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, SOUTH_UP, STAIR_SHAPE, INNER_RIGHT),
+				GBlockstate.when(EDGE, SOUTH_WEST, STAIR_SHAPE, INNER_LEFT),
+				GBlockstate.when(EDGE, UP_WEST, STAIR_SHAPE, INNER_RIGHT)),
+				GBlockstate.variant(inner_id, true, R180, R180))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, UP_NORTH, STAIR_SHAPE, INNER_RIGHT),
+				GBlockstate.when(EDGE, WEST_NORTH, STAIR_SHAPE, INNER_LEFT),
+				GBlockstate.when(EDGE, UP_WEST, STAIR_SHAPE, INNER_LEFT)),
+				GBlockstate.variant(inner_id, true, R180, R270))
+			/* OUTER BOTTOM */
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, DOWN_SOUTH, STAIR_SHAPE, SECOND_OUTER_LEFT),
+				GBlockstate.when(EDGE, DOWN_EAST, STAIR_SHAPE, SECOND_OUTER_RIGHT)),
+				GBlockstate.variant(outer_id, true, R0, R0))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, DOWN_SOUTH, STAIR_SHAPE, SECOND_OUTER_RIGHT),
+				GBlockstate.when(EDGE, WEST_DOWN, STAIR_SHAPE, FIRST_OUTER_RIGHT)),
+				GBlockstate.variant(outer_id, true, R0, R90))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, NORTH_DOWN, STAIR_SHAPE, FIRST_OUTER_RIGHT),
+				GBlockstate.when(EDGE, WEST_DOWN, STAIR_SHAPE, FIRST_OUTER_LEFT)),
+				GBlockstate.variant(outer_id, true, R0, R180))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, NORTH_DOWN, STAIR_SHAPE, FIRST_OUTER_LEFT),
+				GBlockstate.when(EDGE, DOWN_EAST, STAIR_SHAPE, SECOND_OUTER_LEFT)),
+				GBlockstate.variant(outer_id, true, R0, R270))
+			/* OUTER TOP */
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, UP_NORTH, STAIR_SHAPE, SECOND_OUTER_LEFT),
+				GBlockstate.when(EDGE, EAST_UP, STAIR_SHAPE, FIRST_OUTER_LEFT)),
+				GBlockstate.variant(outer_id, true, R180, R0))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, SOUTH_UP, STAIR_SHAPE, FIRST_OUTER_LEFT),
+				GBlockstate.when(EDGE, EAST_UP, STAIR_SHAPE, FIRST_OUTER_RIGHT)),
+				GBlockstate.variant(outer_id, true, R180, R90))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, SOUTH_UP, STAIR_SHAPE, FIRST_OUTER_RIGHT),
+				GBlockstate.when(EDGE, UP_WEST, STAIR_SHAPE, SECOND_OUTER_RIGHT)),
+				GBlockstate.variant(outer_id, true, R180, R180))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, UP_NORTH, STAIR_SHAPE, SECOND_OUTER_RIGHT),
+				GBlockstate.when(EDGE, UP_WEST, STAIR_SHAPE, SECOND_OUTER_LEFT)),
+				GBlockstate.variant(outer_id, true, R180, R270))
+			/* OUTER EAST */
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, EAST_SOUTH, STAIR_SHAPE, SECOND_OUTER_RIGHT),
+				GBlockstate.when(EDGE, DOWN_EAST, STAIR_SHAPE, FIRST_OUTER_RIGHT)),
+				GBlockstate.variant(outer_side_id, true, R0, R0))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, EAST_SOUTH, STAIR_SHAPE, SECOND_OUTER_LEFT),
+				GBlockstate.when(EDGE, EAST_UP, STAIR_SHAPE, SECOND_OUTER_RIGHT)),
+				GBlockstate.variant(outer_side_id, true, R90, R0))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, NORTH_EAST, STAIR_SHAPE, FIRST_OUTER_LEFT),
+				GBlockstate.when(EDGE, EAST_UP, STAIR_SHAPE, SECOND_OUTER_LEFT)),
+				GBlockstate.variant(outer_side_id, true, R180, R0))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, NORTH_EAST, STAIR_SHAPE, FIRST_OUTER_RIGHT),
+				GBlockstate.when(EDGE, DOWN_EAST, STAIR_SHAPE, FIRST_OUTER_LEFT)),
+				GBlockstate.variant(outer_side_id, true, R270, R0))
+			/* OUTER SOUTH */
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, SOUTH_WEST, STAIR_SHAPE, SECOND_OUTER_RIGHT),
+				GBlockstate.when(EDGE, DOWN_SOUTH, STAIR_SHAPE, FIRST_OUTER_RIGHT)),
+				GBlockstate.variant(outer_side_id, true, R0, R90))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, SOUTH_WEST, STAIR_SHAPE, SECOND_OUTER_LEFT),
+				GBlockstate.when(EDGE, SOUTH_UP, STAIR_SHAPE, SECOND_OUTER_RIGHT)),
+				GBlockstate.variant(outer_side_id, true, R90, R90))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, EAST_SOUTH, STAIR_SHAPE, FIRST_OUTER_LEFT),
+				GBlockstate.when(EDGE, SOUTH_UP, STAIR_SHAPE, SECOND_OUTER_LEFT)),
+				GBlockstate.variant(outer_side_id, true, R180, R90))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, EAST_SOUTH, STAIR_SHAPE, FIRST_OUTER_RIGHT),
+				GBlockstate.when(EDGE, DOWN_SOUTH, STAIR_SHAPE, FIRST_OUTER_LEFT)),
+				GBlockstate.variant(outer_side_id, true, R270, R90))
+			/* OUTER WEST */
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, WEST_NORTH, STAIR_SHAPE, SECOND_OUTER_RIGHT),
+				GBlockstate.when(EDGE, WEST_DOWN, STAIR_SHAPE, SECOND_OUTER_LEFT)),
+				GBlockstate.variant(outer_side_id, true, R0, R180))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, WEST_NORTH, STAIR_SHAPE, SECOND_OUTER_LEFT),
+				GBlockstate.when(EDGE, UP_WEST, STAIR_SHAPE, FIRST_OUTER_LEFT)),
+				GBlockstate.variant(outer_side_id, true, R90, R180))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, SOUTH_WEST, STAIR_SHAPE, FIRST_OUTER_LEFT),
+				GBlockstate.when(EDGE, UP_WEST, STAIR_SHAPE, FIRST_OUTER_RIGHT)),
+				GBlockstate.variant(outer_side_id, true, R180, R180))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, SOUTH_WEST, STAIR_SHAPE, FIRST_OUTER_RIGHT),
+				GBlockstate.when(EDGE, WEST_DOWN, STAIR_SHAPE, SECOND_OUTER_RIGHT)),
+				GBlockstate.variant(outer_side_id, true, R270, R180))
+			/* OUTER NORTH */
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, NORTH_EAST, STAIR_SHAPE, SECOND_OUTER_RIGHT),
+				GBlockstate.when(EDGE, NORTH_DOWN, STAIR_SHAPE, SECOND_OUTER_LEFT)),
+				GBlockstate.variant(outer_side_id, true, R0, R270))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, NORTH_EAST, STAIR_SHAPE, SECOND_OUTER_LEFT),
+				GBlockstate.when(EDGE, UP_NORTH, STAIR_SHAPE, FIRST_OUTER_LEFT)),
+				GBlockstate.variant(outer_side_id, true, R90, R270))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, WEST_NORTH, STAIR_SHAPE, FIRST_OUTER_LEFT),
+				GBlockstate.when(EDGE, UP_NORTH, STAIR_SHAPE, FIRST_OUTER_RIGHT)),
+				GBlockstate.variant(outer_side_id, true, R180, R270))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, WEST_NORTH, STAIR_SHAPE, FIRST_OUTER_RIGHT),
+				GBlockstate.when(EDGE, NORTH_DOWN, STAIR_SHAPE, SECOND_OUTER_RIGHT)),
+				GBlockstate.variant(outer_side_id, true, R270, R270))
+			/* OUTER BOTTOM */
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, DOWN_SOUTH, STAIR_SHAPE, OUTER_LEFT),
+				GBlockstate.when(EDGE, DOWN_EAST, STAIR_SHAPE, OUTER_RIGHT),
+				GBlockstate.when(EDGE, EAST_SOUTH, STAIR_SHAPE, OUTER_RIGHT)),
+				GBlockstate.variant(double_outer_id, true, R0, R0))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, DOWN_SOUTH, STAIR_SHAPE, OUTER_RIGHT),
+				GBlockstate.when(EDGE, WEST_DOWN, STAIR_SHAPE, OUTER_RIGHT),
+				GBlockstate.when(EDGE, SOUTH_WEST, STAIR_SHAPE, OUTER_RIGHT)),
+				GBlockstate.variant(double_outer_id, true, R0, R90))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, NORTH_DOWN, STAIR_SHAPE, OUTER_RIGHT),
+				GBlockstate.when(EDGE, WEST_DOWN, STAIR_SHAPE, OUTER_LEFT),
+				GBlockstate.when(EDGE, WEST_NORTH, STAIR_SHAPE, OUTER_RIGHT)),
+				GBlockstate.variant(double_outer_id, true, R0, R180))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, NORTH_DOWN, STAIR_SHAPE, OUTER_LEFT),
+				GBlockstate.when(EDGE, DOWN_EAST, STAIR_SHAPE, OUTER_LEFT),
+				GBlockstate.when(EDGE, NORTH_EAST, STAIR_SHAPE, OUTER_RIGHT)),
+				GBlockstate.variant(double_outer_id, true, R0, R270))
+			/* OUTER TOP */
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, UP_NORTH, STAIR_SHAPE, OUTER_LEFT),
+				GBlockstate.when(EDGE, EAST_UP, STAIR_SHAPE, OUTER_LEFT),
+				GBlockstate.when(EDGE, NORTH_EAST, STAIR_SHAPE, OUTER_LEFT)),
+				GBlockstate.variant(double_outer_id, true, R180, R0))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, SOUTH_UP, STAIR_SHAPE, OUTER_LEFT),
+				GBlockstate.when(EDGE, EAST_UP, STAIR_SHAPE, OUTER_RIGHT),
+				GBlockstate.when(EDGE, EAST_SOUTH, STAIR_SHAPE, OUTER_LEFT)),
+				GBlockstate.variant(double_outer_id, true, R180, R90))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, SOUTH_UP, STAIR_SHAPE, OUTER_RIGHT),
+				GBlockstate.when(EDGE, UP_WEST, STAIR_SHAPE, OUTER_RIGHT),
+				GBlockstate.when(EDGE, SOUTH_WEST, STAIR_SHAPE, OUTER_LEFT)),
+				GBlockstate.variant(double_outer_id, true, R180, R180))
+			.with(When.anyOf(
+				GBlockstate.when(EDGE, UP_NORTH, STAIR_SHAPE, OUTER_RIGHT),
+				GBlockstate.when(EDGE, UP_WEST, STAIR_SHAPE, OUTER_LEFT),
+				GBlockstate.when(EDGE, WEST_NORTH, STAIR_SHAPE, OUTER_LEFT)),
+				GBlockstate.variant(double_outer_id, true, R180, R270));
+	}
+
+	@Override
+	public void setRecipe(RecipeExporter exporter) {
+		RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE);
+		ShapedRecipeJsonBuilder
+			.create(RecipeCategory.BUILDING_BLOCKS, this, 4)
+			.pattern("I  ")
+			.pattern("II ")
+			.pattern("III")
+			.input('I', ReFramed.CUBE)
+			.criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+			.criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+			.offerTo(exporter);
+	}
+
+	static {
+		final VoxelShape STRAIGHT = VoxelShapes.combineAndSimplify(
+			createCuboidShape(0, 8, 0, 16, 16, 8),
+			createCuboidShape(0, 0, 0, 16, 8, 16),
+			BooleanBiFunction.OR
+		);
+		final VoxelShape INNER = Stream.of(
+			createCuboidShape(0, 8, 0, 16, 16, 8),
+			createCuboidShape(0, 8, 8, 8, 16, 16),
+			createCuboidShape(0, 0, 0, 16, 8, 16)
+		).reduce((v1, v2) -> VoxelShapes.combineAndSimplify(v1, v2, BooleanBiFunction.OR)).get();
+		final VoxelShape OUTER = Stream.of(
+			createCuboidShape(0, 8, 0, 8, 16, 8),
+			createCuboidShape(8, 0, 0, 16, 8, 8),
+			createCuboidShape(0, 0, 0, 8, 8, 16)
+		).reduce((v1, v2) -> VoxelShapes.combineAndSimplify(v1, v2, BooleanBiFunction.OR)).get();
+		final VoxelShape JUNCTION = VoxelShapes.combineAndSimplify(
+			createCuboidShape(0, 8, 0, 8, 16, 8),
+			createCuboidShape(0, 0, 0, 16, 8, 16),
+			BooleanBiFunction.OR
+		);
+
+		STAIR_VOXELS = VoxelListBuilder.create(STRAIGHT, 108)
+			.add(INNER).add(VoxelHelper::rotateY)
+			.add(OUTER).add(VoxelHelper::rotateY)
+			.add(JUNCTION).add(VoxelHelper::rotateY)
+			.add(JUNCTION, VoxelHelper::rotateX, VoxelHelper::rotateZ).add(VoxelHelper::rotateZ)
+			// DOWN_SOUTH
+			.add(0, VoxelHelper::rotateCX)
+			.add(1, VoxelHelper::rotateCX).add(2, VoxelHelper::rotateCX)
+			.add(3, VoxelHelper::rotateCX).add(4, VoxelHelper::rotateCX)
+			.add(5, VoxelHelper::rotateCX).add(6, VoxelHelper::rotateCX)
+			.add(7, VoxelHelper::rotateCX).add(8, VoxelHelper::rotateCX)
+			// SOUTH_UP
+			.add(9, VoxelHelper::rotateCX)
+			.add(10, VoxelHelper::rotateCX).add(11, VoxelHelper::rotateCX)
+			.add(12, VoxelHelper::rotateCX).add(13, VoxelHelper::rotateCX)
+			.add(14, VoxelHelper::rotateCX).add(15, VoxelHelper::rotateCX)
+			.add(16, VoxelHelper::rotateCX).add(17, VoxelHelper::rotateCX)
+			// UP_NORTH
+			.add(18, VoxelHelper::rotateCX)
+			.add(19, VoxelHelper::rotateCX).add(20, VoxelHelper::rotateCX)
+			.add(21, VoxelHelper::rotateCX).add(22, VoxelHelper::rotateCX)
+			.add(23, VoxelHelper::rotateCX).add(24, VoxelHelper::rotateCX)
+			.add(25, VoxelHelper::rotateCX).add(26, VoxelHelper::rotateCX)
+			// WEST_DOWN
+			.add(0, VoxelHelper::rotateCY)
+			.add(10).add(1)
+			.add(12).add(3)
+			.add(16).add(5)
+			.add(7, VoxelHelper::rotateCY).add(8, VoxelHelper::rotateCY)
+			// DOWN_EAST
+			.add(36, VoxelHelper::rotateZ)
+			.add(11).add(2)
+			.add(13).add(4)
+			.add(41, VoxelHelper::rotateZ).add(42, VoxelHelper::rotateZ)
+			.add(17).add(6)
+			// EAST_UP
+			.add(45, VoxelHelper::rotateZ)
+			.add(20).add(29)
+			.add(22).add(31)
+			.add(24).add(35)
+			.add(52, VoxelHelper::rotateZ).add(53, VoxelHelper::rotateZ)
+			// UP_WEST
+			.add(54, VoxelHelper::rotateZ)
+			.add(19).add(28)
+			.add(21).add(30)
+			.add(59, VoxelHelper::rotateZ).add(60, VoxelHelper::rotateZ)
+			.add(23).add(34)
+			// WEST_NORTH
+			.add(0, VoxelHelper::rotateCZ)
+			.add(1).add(28)
+			.add(3).add(30)
+			.add(7).add(32)
+			.add(44).add(69)
+			// NORTH_EAST
+			.add(72, VoxelHelper::rotateY)
+			.add(2).add(29)
+			.add(4).add(31)
+			.add(51).add(62)
+			.add(8).add(33)
+			// EAST_SOUTH
+			.add(81, VoxelHelper::rotateY)
+			.add(11).add(20)
+			.add(13).add(22)
+			.add(15).add(26)
+			.add(50).add(61)
+			// SOUTH_WEST
+			.add(90, VoxelHelper::rotateY)
+			.add(10).add(19)
+			.add(12).add(21)
+			.add(43).add(68)
+			.add(14).add(25)
+			.build();
+	}
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedStairsBlock.java

@@ -1,571 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.generator.GBlockstate;
-import fr.adrien1106.reframed.generator.MultipartBlockStateProvider;
-import fr.adrien1106.reframed.util.VoxelHelper;
-import fr.adrien1106.reframed.util.property.StairDirection;
-import fr.adrien1106.reframed.util.property.StairShape;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.data.client.*;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.state.StateManager;
-import net.minecraft.state.property.EnumProperty;
-import net.minecraft.util.Identifier;
-import net.minecraft.util.function.BooleanBiFunction;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.math.Direction.Axis;
-import net.minecraft.util.math.Vec3d;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.util.shape.VoxelShapes;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import net.minecraft.world.WorldAccess;
-import org.jetbrains.annotations.Nullable;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.stream.Stream;
-
-import static fr.adrien1106.reframed.util.property.StairShape.*;
-import static net.minecraft.data.client.VariantSettings.Rotation.*;
-import static fr.adrien1106.reframed.util.property.StairDirection.*;
-
-public class ReFramedStairsBlock extends WaterloggableReFramedBlock implements MultipartBlockStateProvider {
-
-	public static final EnumProperty<StairDirection> FACING = EnumProperty.of("facing", StairDirection.class);
-	public static final EnumProperty<StairShape> SHAPE = EnumProperty.of("shape", StairShape.class);
-	private static final List<VoxelShape> VOXEL_LIST = new ArrayList<>(52);
-
-	public ReFramedStairsBlock(Settings settings) {
-		super(settings);
-		setDefaultState(getDefaultState().with(FACING, StairDirection.NORTH_DOWN).with(SHAPE, STRAIGHT));
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(builder.add(FACING).add(SHAPE));
-	}
-
-	@Override
-	public BlockState getStateForNeighborUpdate(BlockState state, Direction direction, BlockState neighbor_state, WorldAccess world, BlockPos pos, BlockPos moved) {
-		return super.getStateForNeighborUpdate(state, direction, neighbor_state, world, pos, moved)
-			.with(SHAPE, getPlacementShape(state.get(FACING), world, pos));
-	}
-
-	@Nullable
-	@Override // Pretty happy of how clean it is (also got it on first try :) )
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		BlockState state = super.getPlacementState(ctx);
-		Direction side = ctx.getSide().getOpposite();
-		BlockPos block_pos = ctx.getBlockPos();
-		Vec3d hit_pos = ctx.getHitPos();
-		Vec3d pos = new Vec3d(
-			hit_pos.getX() - block_pos.getX() - .5d,
-			hit_pos.getY() - block_pos.getY() - .5d,
-			hit_pos.getZ() - block_pos.getZ() - .5d
-		);
-
-		Stream<Axis> axes = Stream.of(Axis.values()).filter(axis -> !axis.equals(side.getAxis()));
-		Axis axis = axes.reduce((axis_1, axis_2) ->
-			Math.abs(axis_1.choose(pos.x, pos.y, pos.z)) > Math.abs(axis_2.choose(pos.x, pos.y, pos.z))
-				? axis_1
-				: axis_2
-		).get();
-
-		Direction part_direction = Direction.from(
-			axis,
-			axis.choose(pos.x, pos.y, pos.z) > 0
-				? Direction.AxisDirection.POSITIVE
-				: Direction.AxisDirection.NEGATIVE
-		);
-		StairDirection face = StairDirection.getByDirections(side, part_direction);
-
-		return state.with(FACING, face).with(SHAPE, getPlacementShape(face, ctx.getWorld(), block_pos));
-	}
-
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		super.onStateReplaced(state, world, pos, newState, moved);
-
-		//StairsBlock onStateReplaced is Weird! it doesn't delegate to regular block onStateReplaced!
-		if(!state.isOf(newState.getBlock())) world.removeBlockEntity(pos);
-	}
-
-	/* ---------------------------------- DON'T GO FURTHER IF YOU LIKE HAVING EYES ---------------------------------- */
-	@Override
-	public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
-		StairShape shape = state.get(SHAPE);
-		StairDirection direction = state.get(FACING);
-		return switch (shape) {
-			case STRAIGHT ->
-				switch (direction) {
-					case DOWN_SOUTH ->                        VOXEL_LIST.get(0);
-					case NORTH_DOWN ->                        VOXEL_LIST.get(1);
-					case UP_NORTH ->                          VOXEL_LIST.get(2);
-					case SOUTH_UP ->                          VOXEL_LIST.get(3);
-					case DOWN_EAST ->                         VOXEL_LIST.get(4);
-					case WEST_DOWN ->                         VOXEL_LIST.get(5);
-					case UP_WEST ->                           VOXEL_LIST.get(6);
-					case EAST_UP ->                           VOXEL_LIST.get(7);
-					case NORTH_EAST ->                        VOXEL_LIST.get(8);
-					case EAST_SOUTH ->                        VOXEL_LIST.get(9);
-					case SOUTH_WEST ->                        VOXEL_LIST.get(10);
-					case WEST_NORTH ->                        VOXEL_LIST.get(11);
-				};
-			case INNER_LEFT ->
-				switch (direction) {
-					case WEST_DOWN, NORTH_DOWN ->             VOXEL_LIST.get(44);
-					case DOWN_EAST ->                         VOXEL_LIST.get(45);
-					case DOWN_SOUTH ->                        VOXEL_LIST.get(47);
-					case UP_WEST, UP_NORTH, WEST_NORTH ->     VOXEL_LIST.get(48);
-					case EAST_UP, NORTH_EAST ->               VOXEL_LIST.get(49);
-					case EAST_SOUTH ->                        VOXEL_LIST.get(50);
-					case SOUTH_UP, SOUTH_WEST ->              VOXEL_LIST.get(51);
-				};
-			case INNER_RIGHT ->
-				switch (direction) {
-					case WEST_NORTH ->                        VOXEL_LIST.get(44);
-					case NORTH_DOWN, NORTH_EAST ->            VOXEL_LIST.get(45);
-					case DOWN_EAST, DOWN_SOUTH, EAST_SOUTH -> VOXEL_LIST.get(46);
-					case WEST_DOWN, SOUTH_WEST ->             VOXEL_LIST.get(47);
-					case UP_NORTH ->                          VOXEL_LIST.get(49);
-					case EAST_UP, SOUTH_UP ->                 VOXEL_LIST.get(50);
-					case UP_WEST ->                           VOXEL_LIST.get(51);
-				};
-			case OUTER_LEFT ->
-				switch (direction) {
-					case DOWN_EAST ->                         VOXEL_LIST.get(43);
-					case WEST_DOWN, NORTH_DOWN ->             VOXEL_LIST.get(42);
-					case DOWN_SOUTH ->                        VOXEL_LIST.get(41);
-					case EAST_UP, NORTH_EAST ->               VOXEL_LIST.get(39);
-					case UP_WEST, UP_NORTH, WEST_NORTH ->     VOXEL_LIST.get(38);
-					case SOUTH_UP, SOUTH_WEST ->              VOXEL_LIST.get(37);
-					case EAST_SOUTH ->                        VOXEL_LIST.get(36);
-				};
-			case OUTER_RIGHT ->
-				switch (direction) {
-					case NORTH_DOWN, NORTH_EAST ->            VOXEL_LIST.get(43);
-					case WEST_NORTH ->                        VOXEL_LIST.get(42);
-					case WEST_DOWN, SOUTH_WEST ->             VOXEL_LIST.get(41);
-					case DOWN_EAST, DOWN_SOUTH, EAST_SOUTH -> VOXEL_LIST.get(40);
-					case UP_NORTH ->                          VOXEL_LIST.get(39);
-					case UP_WEST ->                           VOXEL_LIST.get(37);
-					case EAST_UP, SOUTH_UP ->                 VOXEL_LIST.get(36);
-				};
-			case FIRST_OUTER_LEFT ->
-				switch (direction) {
-					case WEST_DOWN, NORTH_DOWN ->             VOXEL_LIST.get(14);
-					case SOUTH_UP ->                          VOXEL_LIST.get(17);
-					case EAST_UP ->                           VOXEL_LIST.get(19);
-					case EAST_SOUTH ->                        VOXEL_LIST.get(20);
-					case DOWN_SOUTH ->                        VOXEL_LIST.get(22);
-					case UP_NORTH, WEST_NORTH ->              VOXEL_LIST.get(25);
-					case SOUTH_WEST ->                        VOXEL_LIST.get(28);
-					case UP_WEST ->                           VOXEL_LIST.get(31);
-					case DOWN_EAST ->                         VOXEL_LIST.get(34);
-					case NORTH_EAST ->                        VOXEL_LIST.get(35);
-				};
-			case FIRST_OUTER_RIGHT ->
-				switch (direction) {
-					case NORTH_DOWN ->                        VOXEL_LIST.get(15);
-					case SOUTH_UP, EAST_UP ->                 VOXEL_LIST.get(16);
-					case WEST_DOWN ->                         VOXEL_LIST.get(13);
-					case DOWN_SOUTH, EAST_SOUTH ->            VOXEL_LIST.get(23);
-					case UP_NORTH ->                          VOXEL_LIST.get(24);
-					case WEST_NORTH ->                        VOXEL_LIST.get(26);
-					case UP_WEST ->                           VOXEL_LIST.get(28);
-					case SOUTH_WEST ->                        VOXEL_LIST.get(29);
-					case DOWN_EAST ->                         VOXEL_LIST.get(33);
-					case NORTH_EAST ->                        VOXEL_LIST.get(34);
-				};
-			case SECOND_OUTER_LEFT ->
-				switch (direction) {
-					case DOWN_EAST ->                         VOXEL_LIST.get(15);
-					case DOWN_SOUTH ->                        VOXEL_LIST.get(13);
-					case UP_WEST, UP_NORTH ->                 VOXEL_LIST.get(18);
-					case SOUTH_UP, SOUTH_WEST ->              VOXEL_LIST.get(21);
-					case NORTH_EAST ->                        VOXEL_LIST.get(24);
-					case NORTH_DOWN ->                        VOXEL_LIST.get(26);
-					case WEST_DOWN ->                         VOXEL_LIST.get(30);
-					case WEST_NORTH ->                        VOXEL_LIST.get(31);
-					case EAST_SOUTH ->                        VOXEL_LIST.get(32);
-					case EAST_UP ->                           VOXEL_LIST.get(35);
-				};
-			case SECOND_OUTER_RIGHT ->
-				switch (direction) {
-					case DOWN_SOUTH, DOWN_EAST ->             VOXEL_LIST.get(12);
-					case UP_WEST ->                           VOXEL_LIST.get(17);
-					case UP_NORTH ->                          VOXEL_LIST.get(19);
-					case SOUTH_UP ->                          VOXEL_LIST.get(20);
-					case SOUTH_WEST ->                        VOXEL_LIST.get(22);
-					case NORTH_EAST, NORTH_DOWN ->            VOXEL_LIST.get(27);
-					case WEST_DOWN ->                         VOXEL_LIST.get(29);
-					case WEST_NORTH ->                        VOXEL_LIST.get(30);
-					case EAST_UP ->                           VOXEL_LIST.get(32);
-					case EAST_SOUTH ->                        VOXEL_LIST.get(33);
-				};
-		};
-	}
-
-	private static String getNeighborPos(StairDirection face, Direction direction, Boolean reverse, Direction reference, BlockView world, BlockPos pos) {
-		BlockState block_state = world.getBlockState(
-			pos.offset(reverse ? direction.getOpposite() : direction)
-		);
-
-		if (block_state.getBlock() instanceof ReFramedStairsBlock && block_state.get(FACING).hasDirection(reference)) {
-			if (block_state.get(FACING).hasDirection(face.getLeftDirection())) return "left";
-			else if (block_state.get(FACING).hasDirection(face.getRightDirection())) return "right";
-		}
-		return "";
-	}
-
-	private static StairShape getPlacementShape(StairDirection face, BlockView world, BlockPos pos) {
-		StairShape shape = STRAIGHT;
-
-		String sol = getNeighborPos(face, face.getFirstDirection(), true, face.getSecondDirection(), world, pos);
-		switch (sol) {
-			case "right": return INNER_RIGHT;
-			case "left": return INNER_LEFT;
-		}
-
-		sol = getNeighborPos(face, face.getSecondDirection(), true, face.getFirstDirection(), world, pos);
-		switch (sol) {
-			case "right": return INNER_RIGHT;
-			case "left": return INNER_LEFT;
-		}
-
-		sol = getNeighborPos(face, face.getFirstDirection(), false, face.getSecondDirection(), world, pos);
-		switch (sol) {
-			case "right" -> shape = FIRST_OUTER_RIGHT;
-			case "left" -> shape = FIRST_OUTER_LEFT;
-		}
-
-		sol = getNeighborPos(face, face.getSecondDirection(), false, face.getFirstDirection(), world, pos);
-		switch (sol) {
-			case "right" -> {
-				if (shape.equals(STRAIGHT)) shape = SECOND_OUTER_RIGHT;
-				else if (shape.equals(FIRST_OUTER_RIGHT)) shape = OUTER_RIGHT;
-			}
-			case "left" -> {
-				if (shape.equals(STRAIGHT)) shape = SECOND_OUTER_LEFT;
-				else if (shape.equals(FIRST_OUTER_LEFT)) shape = OUTER_LEFT;
-			}
-		}
-
-		return shape;
-	}
-
-	@Override
-	public MultipartBlockStateSupplier getMultipart() {
-		Identifier straight_id = ReFramed.id("stairs_special");
-		Identifier double_outer_id = ReFramed.id("double_outer_stairs_special");
-		Identifier inner_id = ReFramed.id("inner_stairs_special");
-		Identifier outer_id = ReFramed.id("outer_stairs_special");
-		Identifier outer_side_id = ReFramed.id("outer_side_stairs_special");
-		return MultipartBlockStateSupplier.create(this)
-			/* STRAIGHT X AXIS */
-			.with(GBlockstate.when(FACING, DOWN_EAST, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R0, R0))
-			.with(GBlockstate.when(FACING, EAST_UP, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R180, R0))
-			.with(GBlockstate.when(FACING, UP_WEST, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R180, R180))
-			.with(GBlockstate.when(FACING, WEST_DOWN, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R0, R180))
-			/* STRAIGHT Y AXIS */
-			.with(GBlockstate.when(FACING, EAST_SOUTH, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R90, R0))
-			.with(GBlockstate.when(FACING, SOUTH_WEST, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R90, R90))
-			.with(GBlockstate.when(FACING, WEST_NORTH, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R90, R180))
-			.with(GBlockstate.when(FACING, NORTH_EAST, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R90, R270))
-			/* STRAIGHT Z AXIS */
-			.with(GBlockstate.when(FACING, DOWN_SOUTH, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R0, R90))
-			.with(GBlockstate.when(FACING, NORTH_DOWN, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R0, R270))
-			.with(GBlockstate.when(FACING, UP_NORTH, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R180, R270))
-			.with(GBlockstate.when(FACING, SOUTH_UP, SHAPE, STRAIGHT),
-				GBlockstate.variant(straight_id, true, R180, R90))
-			/* INNER BOTTOM */
-			.with(When.anyOf(
-				GBlockstate.when(FACING, NORTH_DOWN, SHAPE, INNER_LEFT),
-				GBlockstate.when(FACING, WEST_NORTH, SHAPE, INNER_RIGHT),
-			    GBlockstate.when(FACING, WEST_DOWN, SHAPE, INNER_LEFT)),
-				GBlockstate.variant(inner_id, true, R0, R180))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, NORTH_DOWN, SHAPE, INNER_RIGHT),
-				GBlockstate.when(FACING, NORTH_EAST, SHAPE, INNER_RIGHT),
-				GBlockstate.when(FACING, DOWN_EAST, SHAPE, INNER_LEFT)),
-				GBlockstate.variant(inner_id, true, R0, R270))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, DOWN_SOUTH, SHAPE, INNER_RIGHT),
-				GBlockstate.when(FACING, EAST_SOUTH, SHAPE, INNER_RIGHT),
-				GBlockstate.when(FACING, DOWN_EAST, SHAPE, INNER_RIGHT)),
-				GBlockstate.variant(inner_id, true, R0, R0))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, DOWN_SOUTH, SHAPE, INNER_LEFT),
-				GBlockstate.when(FACING, SOUTH_WEST, SHAPE, INNER_RIGHT),
-				GBlockstate.when(FACING, WEST_DOWN, SHAPE, INNER_RIGHT)),
-				GBlockstate.variant(inner_id, true, R0, R90))
-			/* INNER TOP */
-			.with(When.anyOf(
-				GBlockstate.when(FACING, EAST_UP, SHAPE, INNER_LEFT),
-				GBlockstate.when(FACING, NORTH_EAST, SHAPE, INNER_LEFT),
-				GBlockstate.when(FACING, UP_NORTH, SHAPE, INNER_RIGHT)),
-				GBlockstate.variant(inner_id, true, R180, R0))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, EAST_UP, SHAPE, INNER_RIGHT),
-				GBlockstate.when(FACING, EAST_SOUTH, SHAPE, INNER_LEFT),
-				GBlockstate.when(FACING, SOUTH_UP, SHAPE, INNER_RIGHT)),
-				GBlockstate.variant(inner_id, true, R180, R90))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, SOUTH_UP, SHAPE, INNER_LEFT),
-				GBlockstate.when(FACING, SOUTH_WEST, SHAPE, INNER_LEFT),
-				GBlockstate.when(FACING, UP_WEST, SHAPE, INNER_RIGHT)),
-				GBlockstate.variant(inner_id, true, R180, R180))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, UP_NORTH, SHAPE, INNER_LEFT),
-				GBlockstate.when(FACING, WEST_NORTH, SHAPE, INNER_LEFT),
-				GBlockstate.when(FACING, UP_WEST, SHAPE, INNER_LEFT)),
-				GBlockstate.variant(inner_id, true, R180, R270))
-			/* OUTER BOTTOM */
-			.with(When.anyOf(
-				GBlockstate.when(FACING, DOWN_SOUTH, SHAPE, SECOND_OUTER_RIGHT),
-				GBlockstate.when(FACING, DOWN_EAST, SHAPE, SECOND_OUTER_RIGHT)),
-				GBlockstate.variant(outer_id, true, R0, R0))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, DOWN_SOUTH, SHAPE, SECOND_OUTER_LEFT),
-				GBlockstate.when(FACING, WEST_DOWN, SHAPE, FIRST_OUTER_RIGHT)),
-				GBlockstate.variant(outer_id, true, R0, R90))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, NORTH_DOWN, SHAPE, FIRST_OUTER_LEFT),
-				GBlockstate.when(FACING, WEST_DOWN, SHAPE, FIRST_OUTER_LEFT)),
-				GBlockstate.variant(outer_id, true, R0, R180))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, NORTH_DOWN, SHAPE, FIRST_OUTER_RIGHT),
-				GBlockstate.when(FACING, DOWN_EAST, SHAPE, SECOND_OUTER_LEFT)),
-				GBlockstate.variant(outer_id, true, R0, R270))
-			/* OUTER TOP */
-			.with(When.anyOf(
-				GBlockstate.when(FACING, UP_NORTH, SHAPE, SECOND_OUTER_RIGHT),
-				GBlockstate.when(FACING, EAST_UP, SHAPE, FIRST_OUTER_LEFT)),
-				GBlockstate.variant(outer_id, true, R180, R0))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, SOUTH_UP, SHAPE, FIRST_OUTER_RIGHT),
-				GBlockstate.when(FACING, EAST_UP, SHAPE, FIRST_OUTER_RIGHT)),
-				GBlockstate.variant(outer_id, true, R180, R90))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, SOUTH_UP, SHAPE, FIRST_OUTER_LEFT),
-				GBlockstate.when(FACING, UP_WEST, SHAPE, SECOND_OUTER_RIGHT)),
-				GBlockstate.variant(outer_id, true, R180, R180))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, UP_NORTH, SHAPE, SECOND_OUTER_LEFT),
-				GBlockstate.when(FACING, UP_WEST, SHAPE, SECOND_OUTER_LEFT)),
-				GBlockstate.variant(outer_id, true, R180, R270))
-			/* OUTER EAST */
-			.with(When.anyOf(
-				GBlockstate.when(FACING, EAST_SOUTH, SHAPE, SECOND_OUTER_RIGHT),
-				GBlockstate.when(FACING, DOWN_EAST, SHAPE, FIRST_OUTER_RIGHT)),
-				GBlockstate.variant(outer_side_id, true, R0, R0))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, EAST_SOUTH, SHAPE, SECOND_OUTER_LEFT),
-				GBlockstate.when(FACING, EAST_UP, SHAPE, SECOND_OUTER_RIGHT)),
-				GBlockstate.variant(outer_side_id, true, R90, R0))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, NORTH_EAST, SHAPE, FIRST_OUTER_LEFT),
-				GBlockstate.when(FACING, EAST_UP, SHAPE, SECOND_OUTER_LEFT)),
-				GBlockstate.variant(outer_side_id, true, R180, R0))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, NORTH_EAST, SHAPE, FIRST_OUTER_RIGHT),
-				GBlockstate.when(FACING, DOWN_EAST, SHAPE, FIRST_OUTER_LEFT)),
-				GBlockstate.variant(outer_side_id, true, R270, R0))
-			/* OUTER SOUTH */
-			.with(When.anyOf(
-				GBlockstate.when(FACING, SOUTH_WEST, SHAPE, SECOND_OUTER_RIGHT),
-				GBlockstate.when(FACING, DOWN_SOUTH, SHAPE, FIRST_OUTER_LEFT)),
-				GBlockstate.variant(outer_side_id, true, R0, R90))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, SOUTH_WEST, SHAPE, SECOND_OUTER_LEFT),
-				GBlockstate.when(FACING, SOUTH_UP, SHAPE, SECOND_OUTER_LEFT)),
-				GBlockstate.variant(outer_side_id, true, R90, R90))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, EAST_SOUTH, SHAPE, FIRST_OUTER_LEFT),
-				GBlockstate.when(FACING, SOUTH_UP, SHAPE, SECOND_OUTER_RIGHT)),
-				GBlockstate.variant(outer_side_id, true, R180, R90))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, EAST_SOUTH, SHAPE, FIRST_OUTER_RIGHT),
-				GBlockstate.when(FACING, DOWN_SOUTH, SHAPE, FIRST_OUTER_RIGHT)),
-				GBlockstate.variant(outer_side_id, true, R270, R90))
-			/* OUTER WEST */
-			.with(When.anyOf(
-				GBlockstate.when(FACING, WEST_NORTH, SHAPE, SECOND_OUTER_RIGHT),
-				GBlockstate.when(FACING, WEST_DOWN, SHAPE, SECOND_OUTER_LEFT)),
-				GBlockstate.variant(outer_side_id, true, R0, R180))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, WEST_NORTH, SHAPE, SECOND_OUTER_LEFT),
-				GBlockstate.when(FACING, UP_WEST, SHAPE, FIRST_OUTER_LEFT)),
-				GBlockstate.variant(outer_side_id, true, R90, R180))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, SOUTH_WEST, SHAPE, FIRST_OUTER_LEFT),
-				GBlockstate.when(FACING, UP_WEST, SHAPE, FIRST_OUTER_RIGHT)),
-				GBlockstate.variant(outer_side_id, true, R180, R180))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, SOUTH_WEST, SHAPE, FIRST_OUTER_RIGHT),
-				GBlockstate.when(FACING, WEST_DOWN, SHAPE, SECOND_OUTER_RIGHT)),
-				GBlockstate.variant(outer_side_id, true, R270, R180))
-			/* OUTER NORTH */
-			.with(When.anyOf(
-				GBlockstate.when(FACING, NORTH_EAST, SHAPE, SECOND_OUTER_RIGHT),
-				GBlockstate.when(FACING, NORTH_DOWN, SHAPE, SECOND_OUTER_RIGHT)),
-				GBlockstate.variant(outer_side_id, true, R0, R270))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, NORTH_EAST, SHAPE, SECOND_OUTER_LEFT),
-				GBlockstate.when(FACING, UP_NORTH, SHAPE, FIRST_OUTER_RIGHT)),
-				GBlockstate.variant(outer_side_id, true, R90, R270))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, WEST_NORTH, SHAPE, FIRST_OUTER_LEFT),
-				GBlockstate.when(FACING, UP_NORTH, SHAPE, FIRST_OUTER_LEFT)),
-				GBlockstate.variant(outer_side_id, true, R180, R270))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, WEST_NORTH, SHAPE, FIRST_OUTER_RIGHT),
-				GBlockstate.when(FACING, NORTH_DOWN, SHAPE, SECOND_OUTER_LEFT)),
-				GBlockstate.variant(outer_side_id, true, R270, R270))
-			/* OUTER BOTTOM */
-			.with(When.anyOf(
-				GBlockstate.when(FACING, DOWN_SOUTH, SHAPE, OUTER_RIGHT),
-				GBlockstate.when(FACING, DOWN_EAST, SHAPE, OUTER_RIGHT),
-				GBlockstate.when(FACING, EAST_SOUTH, SHAPE, OUTER_RIGHT)),
-				GBlockstate.variant(double_outer_id, true, R0, R0))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, DOWN_SOUTH, SHAPE, OUTER_LEFT),
-				GBlockstate.when(FACING, WEST_DOWN, SHAPE, OUTER_RIGHT),
-				GBlockstate.when(FACING, SOUTH_WEST, SHAPE, OUTER_RIGHT)),
-				GBlockstate.variant(double_outer_id, true, R0, R90))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, NORTH_DOWN, SHAPE, OUTER_LEFT),
-				GBlockstate.when(FACING, WEST_DOWN, SHAPE, OUTER_LEFT),
-				GBlockstate.when(FACING, WEST_NORTH, SHAPE, OUTER_RIGHT)),
-				GBlockstate.variant(double_outer_id, true, R0, R180))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, NORTH_DOWN, SHAPE, OUTER_RIGHT),
-				GBlockstate.when(FACING, DOWN_EAST, SHAPE, OUTER_LEFT),
-				GBlockstate.when(FACING, NORTH_EAST, SHAPE, OUTER_RIGHT)),
-				GBlockstate.variant(double_outer_id, true, R0, R270))
-			/* OUTER TOP */
-			.with(When.anyOf(
-				GBlockstate.when(FACING, UP_NORTH, SHAPE, OUTER_RIGHT),
-				GBlockstate.when(FACING, EAST_UP, SHAPE, OUTER_LEFT),
-				GBlockstate.when(FACING, NORTH_EAST, SHAPE, OUTER_LEFT)),
-				GBlockstate.variant(double_outer_id, true, R180, R0))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, SOUTH_UP, SHAPE, OUTER_RIGHT),
-				GBlockstate.when(FACING, EAST_UP, SHAPE, OUTER_RIGHT),
-				GBlockstate.when(FACING, EAST_SOUTH, SHAPE, OUTER_LEFT)),
-				GBlockstate.variant(double_outer_id, true, R180, R90))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, SOUTH_UP, SHAPE, OUTER_LEFT),
-				GBlockstate.when(FACING, UP_WEST, SHAPE, OUTER_RIGHT),
-				GBlockstate.when(FACING, SOUTH_WEST, SHAPE, OUTER_LEFT)),
-				GBlockstate.variant(double_outer_id, true, R180, R180))
-			.with(When.anyOf(
-				GBlockstate.when(FACING, UP_NORTH, SHAPE, OUTER_LEFT),
-				GBlockstate.when(FACING, UP_WEST, SHAPE, OUTER_LEFT),
-				GBlockstate.when(FACING, WEST_NORTH, SHAPE, OUTER_LEFT)),
-				GBlockstate.variant(double_outer_id, true, R180, R270));
-	}
-
-	static {
-		final VoxelShape STRAIGHT = Stream.of(
-			VoxelShapes.cuboid(0.0f, 0.0f, 0.0f, 1.0f, 0.5f, 1.0f),
-			VoxelShapes.cuboid(0.0f, 0.5f, 0.5f, 1.0f, 1.0f, 1.0f)
-		).reduce((previous, current) -> VoxelShapes.combineAndSimplify(previous, current, BooleanBiFunction.OR)).get();
-		final VoxelShape JUNCTION = Stream.of(
-			VoxelShapes.cuboid(0.0f, 0.0f, 0.0f, 1.0f, 0.5f, 1.0f),
-			VoxelShapes.cuboid(0.5f, 0.5f, 0.5f, 1.0f, 1.0f, 1.0f)
-		).reduce((previous, current) -> VoxelShapes.combineAndSimplify(previous, current, BooleanBiFunction.OR)).get();
-		final VoxelShape OUTER = Stream.of(
-			VoxelShapes.cuboid(0.5f, 0.5f, 0.5f, 1.0f, 1.0f, 1.0f),
-			VoxelShapes.cuboid(0.5f, 0.5f, 0.0f, 1.0f, 1.0f, 0.5f),
-			VoxelShapes.cuboid(0.0f, 0.5f, 0.5f, 0.5f, 1.0f, 1.0f),
-			VoxelShapes.cuboid(0.5f, 0.0f, 0.5f, 1.0f, 0.5f, 1.0f)
-		).reduce((previous, current) -> VoxelShapes.combineAndSimplify(previous, current, BooleanBiFunction.OR)).get();
-		final VoxelShape INNER = Stream.of(
-			VoxelShapes.cuboid(0.0f, 0.0f, 0.0f, 1.0f, 0.5f, 1.0f),
-			VoxelShapes.cuboid(0.0f, 0.5f, 0.0f, 0.5f, 1.0f, 1.0f),
-			VoxelShapes.cuboid(0.5f, 0.5f, 0.0f, 1.0f, 1.0f, 0.5f)
-		).reduce((previous, current) -> VoxelShapes.combineAndSimplify(previous, current, BooleanBiFunction.OR)).get();
-
-		VOXEL_LIST.add(STRAIGHT);
-		VOXEL_LIST.add(VoxelHelper.mirror(STRAIGHT, Axis.Z));
-		VOXEL_LIST.add(VoxelHelper.mirror(VoxelHelper.rotateCounterClockwise(STRAIGHT, Axis.X), Axis.Z));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(STRAIGHT, Axis.X));
-
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(STRAIGHT, Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.mirror(VoxelHelper.rotateCounterClockwise(STRAIGHT, Axis.Y), Axis.X));
-		VOXEL_LIST.add(VoxelHelper.mirror(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(STRAIGHT, Axis.Y), Axis.Z), Axis.X));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(STRAIGHT, Axis.Y), Axis.Z));
-
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.rotateClockwise(STRAIGHT, Axis.Z), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(STRAIGHT, Axis.Z));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateClockwise(STRAIGHT, Axis.Z), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.mirror(VoxelHelper.rotateClockwise(VoxelHelper.rotateClockwise(STRAIGHT, Axis.Z), Axis.Y), Axis.Z));
-
-		VOXEL_LIST.add(JUNCTION);
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(JUNCTION, Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateClockwise(JUNCTION, Axis.Y), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.Y));
-
-		VOXEL_LIST.add(VoxelHelper.mirror(JUNCTION, Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.mirror(JUNCTION, Axis.Y), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateClockwise(VoxelHelper.mirror(JUNCTION, Axis.Y), Axis.Y), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.mirror(JUNCTION, Axis.Y), Axis.Y));
-
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Z));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Z), Axis.Z));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Z));
-
-		VOXEL_LIST.add(VoxelHelper.mirror(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Z));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.mirror(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Z), Axis.Z));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateClockwise(VoxelHelper.mirror(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Z), Axis.Z), Axis.Z));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.mirror(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Z), Axis.Z));
-
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Y), Axis.X));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateClockwise(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Y), Axis.X), Axis.X));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Y), Axis.X));
-
-		VOXEL_LIST.add(VoxelHelper.mirror(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Y), Axis.X));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.mirror(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Y), Axis.X), Axis.X));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.rotateClockwise(VoxelHelper.mirror(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Y), Axis.X), Axis.X), Axis.X));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.mirror(VoxelHelper.rotateClockwise(VoxelHelper.rotateCounterClockwise(JUNCTION, Axis.X), Axis.Y), Axis.X), Axis.X));
-
-		VOXEL_LIST.add(OUTER);
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(OUTER, Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.rotateCounterClockwise(OUTER, Axis.Y), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(OUTER, Axis.Y));
-
-		VOXEL_LIST.add(VoxelHelper.mirror(OUTER, Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.mirror(OUTER, Axis.Y), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.rotateCounterClockwise(VoxelHelper.mirror(OUTER, Axis.Y), Axis.Y), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.mirror(OUTER, Axis.Y), Axis.Y));
-
-		VOXEL_LIST.add(INNER);
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(INNER, Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.rotateCounterClockwise(INNER, Axis.Y), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(INNER, Axis.Y));
-
-		VOXEL_LIST.add(VoxelHelper.mirror(INNER, Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateClockwise(VoxelHelper.mirror(INNER, Axis.Y), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.rotateCounterClockwise(VoxelHelper.mirror(INNER, Axis.Y), Axis.Y), Axis.Y));
-		VOXEL_LIST.add(VoxelHelper.rotateCounterClockwise(VoxelHelper.mirror(INNER, Axis.Y), Axis.Y));
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedStairsCubeBlock.java

@@ -0,0 +1,100 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.blocks.Edge;
+import fr.adrien1106.reframed.util.blocks.StairShape;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapelessRecipeJsonBuilder;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.world.World;
+import net.minecraft.world.WorldAccess;
+import org.jetbrains.annotations.Nullable;
+
+import static fr.adrien1106.reframed.block.ReFramedStairBlock.*;
+import static fr.adrien1106.reframed.util.VoxelHelper.VoxelListBuilder;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.EDGE;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.STAIR_SHAPE;
+
+public class ReFramedStairsCubeBlock extends ReFramedDoubleBlock implements BlockStateProvider {
+
+    private static final VoxelShape[] STAIRS_CUBE_VOXELS = VoxelListBuilder.buildFrom(STAIR_VOXELS);
+    private record ModelCacheKey(Edge edge, StairShape shape) {}
+
+    public ReFramedStairsCubeBlock(Settings settings) {
+        super(settings);
+        setDefaultState(getDefaultState().with(EDGE, Edge.NORTH_DOWN).with(STAIR_SHAPE, StairShape.STRAIGHT));
+    }
+
+    @Override
+    public Object getModelCacheKey(BlockState state) {
+        return new ModelCacheKey(state.get(EDGE), state.get(STAIR_SHAPE));
+    }
+
+    @Override
+    public int getModelStateCount() {
+        return 108; // Has 12 * 9 state combination and 52 models still reduces cache size
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(EDGE, STAIR_SHAPE));
+    }
+
+    @Override
+    public BlockState getStateForNeighborUpdate(BlockState state, Direction direction, BlockState neighbor_state, WorldAccess world, BlockPos pos, BlockPos moved) {
+        return super.getStateForNeighborUpdate(state, direction, neighbor_state, world, pos, moved)
+            .with(STAIR_SHAPE, BlockHelper.getStairsShape(state.get(EDGE), world, pos));
+    }
+
+
+    @Nullable
+    @Override
+    public BlockState getPlacementState(ItemPlacementContext ctx) {
+        Edge face = BlockHelper.getPlacementEdge(ctx);
+        StairShape shape = BlockHelper.getStairsShape(face, ctx.getWorld(), ctx.getBlockPos());
+        return super.getPlacementState(ctx).with(EDGE, face).with(STAIR_SHAPE, shape);
+    }
+
+    @Override
+    public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
+        super.onStateReplaced(state, world, pos, newState, moved);
+
+        if(!state.isOf(newState.getBlock())) world.removeBlockEntity(pos);
+    }
+
+    @Override
+    public VoxelShape getShape(BlockState state, int i) {
+        Edge edge = state.get(EDGE);
+        StairShape shape = state.get(STAIR_SHAPE);
+        return i == 2 ? STAIRS_CUBE_VOXELS[edge.getID() * 9 + shape.getID()] : getStairShape(edge, shape);
+    }
+
+    @Override
+    public MultipartBlockStateSupplier getMultipart() {
+        return getStairMultipart(this, true);
+    }
+
+    @Override
+    public void setRecipe(RecipeExporter exporter) {
+        RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE);
+        ShapelessRecipeJsonBuilder
+            .create(RecipeCategory.BUILDING_BLOCKS, this)
+            .input(ReFramed.STAIR)
+            .input(ReFramed.STEP)
+            .criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+            .criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+            .offerTo(exporter);
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedStepBlock.java

@@ -0,0 +1,135 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.generator.GBlockstate;
+import fr.adrien1106.reframed.util.VoxelHelper;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.blocks.Edge;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.data.client.BlockStateSupplier;
+import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapedRecipeJsonBuilder;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.world.BlockView;
+import org.jetbrains.annotations.Nullable;
+
+import static fr.adrien1106.reframed.util.VoxelHelper.VoxelListBuilder;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.EDGE;
+import static fr.adrien1106.reframed.util.blocks.Edge.*;
+import static net.minecraft.data.client.VariantSettings.Rotation.*;
+
+public class ReFramedStepBlock extends WaterloggableReFramedBlock implements BlockStateProvider {
+
+    public static final VoxelShape[] STEP_VOXELS;
+
+    public ReFramedStepBlock(Settings settings) {
+        super(settings);
+        setDefaultState(getDefaultState().with(EDGE, Edge.NORTH_DOWN));
+    }
+
+    @Override
+    public Object getModelCacheKey(BlockState state) {
+        return state.get(EDGE);
+    }
+
+    @Override
+    public int getModelStateCount() {
+        return 12;
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(EDGE));
+    }
+
+    @Nullable
+    @Override
+    public BlockState getPlacementState(ItemPlacementContext ctx) {
+        return super.getPlacementState(ctx).with(EDGE, BlockHelper.getPlacementEdge(ctx));
+    }
+
+    @Override
+    public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
+        return getStepShape(state.get(EDGE));
+    }
+
+    public static VoxelShape getStepShape(Edge edge) {
+        return STEP_VOXELS[edge.getID()];
+    }
+
+    @Override
+    public BlockStateSupplier getMultipart() {
+        Identifier model_id = ReFramed.id("step_special");
+        return MultipartBlockStateSupplier.create(this)
+            /* X AXIS */
+            .with(GBlockstate.when(EDGE, DOWN_EAST),
+                GBlockstate.variant(model_id, true, R0, R0))
+            .with(GBlockstate.when(EDGE, EAST_UP),
+                GBlockstate.variant(model_id, true, R180, R0))
+            .with(GBlockstate.when(EDGE, UP_WEST),
+                GBlockstate.variant(model_id, true, R180, R180))
+            .with(GBlockstate.when(EDGE, WEST_DOWN),
+                GBlockstate.variant(model_id, true, R0, R180))
+            /* Y AXIS */
+            .with(GBlockstate.when(EDGE, EAST_SOUTH),
+                GBlockstate.variant(model_id, true, R90, R0))
+            .with(GBlockstate.when(EDGE, SOUTH_WEST),
+                GBlockstate.variant(model_id, true, R90, R90))
+            .with(GBlockstate.when(EDGE, WEST_NORTH),
+                GBlockstate.variant(model_id, true, R90, R180))
+            .with(GBlockstate.when(EDGE, NORTH_EAST),
+                GBlockstate.variant(model_id, true, R90, R270))
+            /* Z AXIS */
+            .with(GBlockstate.when(EDGE, DOWN_SOUTH),
+                GBlockstate.variant(model_id, true, R0, R90))
+            .with(GBlockstate.when(EDGE, NORTH_DOWN),
+                GBlockstate.variant(model_id, true, R0, R270))
+            .with(GBlockstate.when(EDGE, UP_NORTH),
+                GBlockstate.variant(model_id, true, R180, R270))
+            .with(GBlockstate.when(EDGE, SOUTH_UP),
+                GBlockstate.variant(model_id, true, R180, R90));
+    }
+
+    @Override
+    public void setRecipe(RecipeExporter exporter) {
+        RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE, 4);
+        ShapedRecipeJsonBuilder
+            .create(RecipeCategory.BUILDING_BLOCKS, this, 8)
+            .pattern("II")
+            .input('I', ReFramed.CUBE)
+            .criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+            .criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+            .offerTo(exporter);
+    }
+
+    static {
+        final VoxelShape STEP = createCuboidShape(0, 0, 0, 16, 8, 8);
+
+        STEP_VOXELS = VoxelListBuilder.create(STEP, 12)
+            .add(VoxelHelper::rotateCX)
+            .add(VoxelHelper::rotateCX)
+            .add(VoxelHelper::rotateCX)
+
+            .add(STEP, VoxelHelper::rotateCY)
+            .add(VoxelHelper::rotateZ)
+            .add(VoxelHelper::rotateZ)
+            .add(VoxelHelper::rotateZ)
+
+            .add(STEP, VoxelHelper::rotateCZ)
+            .add(VoxelHelper::rotateY)
+            .add(VoxelHelper::rotateY)
+            .add(VoxelHelper::rotateY)
+            .build();
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedStepsSlabBlock.java

@@ -0,0 +1,136 @@
+package fr.adrien1106.reframed.block;
+
+import fr.adrien1106.reframed.ReFramed;
+import fr.adrien1106.reframed.generator.BlockStateProvider;
+import fr.adrien1106.reframed.generator.GBlockstate;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.blocks.Edge;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.data.client.MultipartBlockStateSupplier;
+import net.minecraft.data.server.recipe.RecipeExporter;
+import net.minecraft.data.server.recipe.RecipeProvider;
+import net.minecraft.data.server.recipe.ShapelessRecipeJsonBuilder;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.recipe.book.RecipeCategory;
+import net.minecraft.state.StateManager;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.util.math.Direction.Axis;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.world.BlockView;
+import org.jetbrains.annotations.Nullable;
+
+import static fr.adrien1106.reframed.block.ReFramedSlabBlock.getSlabShape;
+import static fr.adrien1106.reframed.block.ReFramedStepBlock.getStepShape;
+import static net.minecraft.data.client.VariantSettings.Rotation.*;
+import static net.minecraft.state.property.Properties.AXIS;
+import static net.minecraft.state.property.Properties.FACING;
+import static net.minecraft.util.shape.VoxelShapes.empty;
+
+public class ReFramedStepsSlabBlock extends WaterloggableReFramedDoubleBlock implements BlockStateProvider {
+    private record ModelCacheKey(Direction facing, Axis axis) {}
+
+    public ReFramedStepsSlabBlock(Settings settings) {
+        super(settings);
+        setDefaultState(getDefaultState().with(FACING, Direction.DOWN).with(AXIS, Axis.X));
+    }
+
+    @Override
+    public Object getModelCacheKey(BlockState state) {
+        return new ModelCacheKey(state.get(FACING), state.get(AXIS));
+    }
+
+    @Override
+    public int getModelStateCount() {
+        return 18;
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(FACING, AXIS));
+    }
+
+    @Override
+    public @Nullable BlockState getPlacementState(ItemPlacementContext ctx) {
+        Vec3d pos = BlockHelper.getHitPos(ctx.getHitPos(), ctx.getBlockPos());
+        return super.getPlacementState(ctx)
+            .with(FACING, ctx.getSide().getOpposite())
+            .with(AXIS, BlockHelper.getHitAxis(pos, ctx.getSide()));
+    }
+
+    @Override
+    public VoxelShape getCullingShape(BlockState state, BlockView view, BlockPos pos) {
+        return isGhost(view, pos) ? empty() : getSlabShape(state.get(FACING));
+    }
+
+    @Override
+    public VoxelShape getOutlineShape(BlockState state, BlockView world, BlockPos pos, ShapeContext context) {
+        return getSlabShape(state.get(FACING));
+    }
+
+    @Override
+    public VoxelShape getShape(BlockState state, int i) {
+        Axis axis = state.get(AXIS);
+        return getStepShape(Edge.getByDirections(
+            state.get(FACING),
+            switch (axis) {
+                case X -> i == 1 ? Direction.WEST : Direction.EAST;
+                case Y -> i == 1 ? Direction.DOWN : Direction.UP;
+                case Z -> i == 1 ? Direction.SOUTH : Direction.NORTH;
+            }
+        ));
+    }
+
+    @Override
+    public int getTopThemeIndex(BlockState state) {
+        return 2;
+    }
+
+    @Override
+    public MultipartBlockStateSupplier getMultipart() {
+        Identifier step_id = ReFramed.id("steps_slab_special");
+        Identifier step_side_id = ReFramed.id("steps_slab_side_special");
+        return MultipartBlockStateSupplier.create(this)
+            .with(GBlockstate.when(FACING, Direction.DOWN, AXIS, Axis.X),
+                GBlockstate.variant(step_id, true, R0, R180))
+            .with(GBlockstate.when(FACING, Direction.DOWN, AXIS, Axis.Z),
+                GBlockstate.variant(step_id, true, R0, R90))
+            .with(GBlockstate.when(FACING, Direction.UP, AXIS, Axis.X),
+                GBlockstate.variant(step_id, true, R180, R180))
+            .with(GBlockstate.when(FACING, Direction.UP, AXIS, Axis.Z),
+                GBlockstate.variant(step_id, true, R180, R90))
+
+            .with(GBlockstate.when(FACING, Direction.EAST, AXIS, Axis.Z),
+                GBlockstate.variant(step_side_id, true, R180, R0))
+            .with(GBlockstate.when(FACING, Direction.EAST, AXIS, Axis.Y),
+                GBlockstate.variant(step_side_id, true, R90, R0))
+            .with(GBlockstate.when(FACING, Direction.SOUTH, AXIS, Axis.X),
+                GBlockstate.variant(step_side_id, true, R180, R90))
+            .with(GBlockstate.when(FACING, Direction.SOUTH, AXIS, Axis.Y),
+                GBlockstate.variant(step_side_id, true, R90, R90))
+            .with(GBlockstate.when(FACING, Direction.WEST, AXIS, Axis.Z),
+                GBlockstate.variant(step_side_id, true, R0, R180))
+            .with(GBlockstate.when(FACING, Direction.WEST, AXIS, Axis.Y),
+                GBlockstate.variant(step_side_id, true, R90, R180))
+            .with(GBlockstate.when(FACING, Direction.NORTH, AXIS, Axis.X),
+                GBlockstate.variant(step_side_id, true, R0, R270))
+            .with(GBlockstate.when(FACING, Direction.NORTH, AXIS, Axis.Y),
+                GBlockstate.variant(step_side_id, true, R90, R270));
+    }
+
+    @Override
+    public void setRecipe(RecipeExporter exporter) {
+        RecipeProvider.offerStonecuttingRecipe(exporter, RecipeCategory.BUILDING_BLOCKS, this, ReFramed.CUBE, 2);
+        ShapelessRecipeJsonBuilder
+            .create(RecipeCategory.BUILDING_BLOCKS, this)
+            .input(ReFramed.STEP, 2)
+            .criterion(FabricRecipeProvider.hasItem(ReFramed.CUBE), FabricRecipeProvider.conditionsFromItem(ReFramed.CUBE))
+            .criterion(FabricRecipeProvider.hasItem(this), FabricRecipeProvider.conditionsFromItem(this))
+            .offerTo(exporter);
+    }
+}

src/main/java/fr/adrien1106/reframed/block/ReFramedTrapdoorBlock.java

@@ -1,94 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import fr.adrien1106.reframed.util.ReframedInteractible;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockSetType;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.block.TrapdoorBlock;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-public class ReFramedTrapdoorBlock extends TrapdoorBlock implements BlockEntityProvider, ReframedInteractible {
-	public ReFramedTrapdoorBlock(Settings settings, BlockSetType woodType) {
-		super(woodType, settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-	}
-	
-	@Override
-	public @Nullable BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-		super.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), super.getCollisionShape(state, view, pos, ctx));
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return ReFramedInteractionUtil.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getStrongRedstonePower(state, view, pos, dir);
-	}
-	
-	@Override
-	public boolean canAddRedstoneEmission(BlockState state, BlockView view, BlockPos pos) {
-		return false;
-	}
-}

src/main/java/fr/adrien1106/reframed/block/ReFramedWallBlock.java

@@ -1,130 +0,0 @@
-package fr.adrien1106.reframed.block;
-
-import com.google.common.base.MoreObjects;
-import fr.adrien1106.reframed.ReFramed;
-import fr.adrien1106.reframed.util.ReFramedInteractionUtil;
-import fr.adrien1106.reframed.mixin.WallBlockAccessor;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.block.WallBlock;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.block.enums.WallShape;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.state.StateManager;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.util.shape.VoxelShapes;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-import java.util.HashMap;
-import java.util.Map;
-
-public class ReFramedWallBlock extends WallBlock implements BlockEntityProvider {
-	public ReFramedWallBlock(Settings settings) {
-		super(settings);
-		setDefaultState(ReFramedInteractionUtil.setDefaultStates(getDefaultState()));
-		
-		initNewShapemaps(); //WallBlock specific haxx
-	}
-	
-	@Nullable
-	@Override
-	public BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
-		return ReFramed.REFRAMED_BLOCK_ENTITY.instantiate(pos, state);
-	}
-	
-	@Override
-	protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		super.appendProperties(ReFramedInteractionUtil.appendProperties(builder));
-	}
-	
-	@Nullable
-	@Override
-	public BlockState getPlacementState(ItemPlacementContext ctx) {
-		return ReFramedInteractionUtil.modifyPlacementState(super.getPlacementState(ctx), ctx);
-	}
-	
-	@Override
-	public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		ActionResult r = ReFramedInteractionUtil.onUse(state, world, pos, player, hand, hit);
-		if(!r.isAccepted()) r = super.onUse(state, world, pos, player, hand, hit);
-		return r;
-	}
-	
-	@Override
-	public void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		ReFramedInteractionUtil.onStateReplaced(state, world, pos, newState, moved);
-		super.onStateReplaced(state, world, pos, newState, moved);
-	}
-	
-	@Override
-	public void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		ReFramedInteractionUtil.onPlaced(world, pos, state, placer, stack);
-	}
-	
-	@Override
-	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return MoreObjects.firstNonNull(ReFramedInteractionUtil.getCollisionShape(state, view, pos, ctx), getNewShape(state, newCollisionShapeMap));
-	}
-	
-	@Override
-	public VoxelShape getOutlineShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return getNewShape(state, newShapeMap);
-	}
-	
-	@Override
-	public boolean emitsRedstonePower(BlockState state) {
-		return ReFramedInteractionUtil.emitsRedstonePower(state);
-	}
-	
-	@Override
-	public int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getWeakRedstonePower(state, view, pos, dir);
-	}
-	
-	@Override
-	public int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return ReFramedInteractionUtil.getStrongRedstonePower(state, view, pos, dir);
-	}
-	
-	//Shapemap heck (WallBlock has a map keyed on BlockState, but since we add more blockstates most of those map lookups fail)
-	
-	protected record ShapeKey(boolean up, WallShape north, WallShape east, WallShape south, WallShape west) {
-		static ShapeKey fromBlockstate(BlockState state) {
-			return new ShapeKey(
-				state.get(WallBlock.UP),
-				state.get(WallBlock.NORTH_SHAPE),
-				state.get(WallBlock.EAST_SHAPE),
-				state.get(WallBlock.SOUTH_SHAPE),
-				state.get(WallBlock.WEST_SHAPE)
-			);
-		}
-	}
-	
-	protected final Map<ShapeKey, VoxelShape> newShapeMap = new HashMap<>();
-	protected final Map<ShapeKey, VoxelShape> newCollisionShapeMap = new HashMap<>();
-	
-	protected void initNewShapemaps() {
-		initNewShapemap(((WallBlockAccessor) this).getShapeMap(), newShapeMap);
-		initNewShapemap(((WallBlockAccessor) this).getCollisionShapeMap(), newCollisionShapeMap);
-	}
-	
-	protected void initNewShapemap(Map<BlockState, VoxelShape> oldShapeMap, Map<ShapeKey, VoxelShape> newShapeMap) {
-		oldShapeMap.forEach((state, shape) -> newShapeMap.putIfAbsent(ShapeKey.fromBlockstate(state), shape));
-	}
-	
-	protected VoxelShape getNewShape(BlockState state, Map<ShapeKey, VoxelShape> shapes) {
-		return shapes.getOrDefault(ShapeKey.fromBlockstate(state), VoxelShapes.empty());
-	}
-}

src/main/java/fr/adrien1106/reframed/block/WaterloggableReFramedBlock.java

@@ -16,7 +16,6 @@ import org.jetbrains.annotations.Nullable;
 public class WaterloggableReFramedBlock extends ReFramedBlock implements Waterloggable {
 	public WaterloggableReFramedBlock(Settings settings) {
 		super(settings);
-		
 		setDefaultState(getDefaultState().with(Properties.WATERLOGGED, false));
 	}
 	

src/main/java/fr/adrien1106/reframed/block/WaterloggableReFramedDoubleBlock.java

@@ -0,0 +1,43 @@
+package fr.adrien1106.reframed.block;
+
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Waterloggable;
+import net.minecraft.fluid.FluidState;
+import net.minecraft.fluid.Fluids;
+import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.state.StateManager;
+import net.minecraft.state.property.Properties;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.world.WorldAccess;
+import org.jetbrains.annotations.Nullable;
+
+public class WaterloggableReFramedDoubleBlock extends ReFramedDoubleBlock implements Waterloggable {
+    public WaterloggableReFramedDoubleBlock(Settings settings) {
+        super(settings);
+    }
+
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder.add(Properties.WATERLOGGED));
+    }
+
+    @Nullable
+    @Override
+    public BlockState getPlacementState(ItemPlacementContext ctx) {
+        BlockState sup = super.getPlacementState(ctx);
+        if(sup != null) sup = sup.with(Properties.WATERLOGGED, ctx.getWorld().getFluidState(ctx.getBlockPos()).isOf(Fluids.WATER));
+        return sup;
+    }
+
+    @Override
+    public FluidState getFluidState(BlockState state) {
+        return state.get(Properties.WATERLOGGED) ? Fluids.WATER.getStill(false) : super.getFluidState(state);
+    }
+
+    public BlockState getStateForNeighborUpdate(BlockState state, Direction direction, BlockState otherState, WorldAccess world, BlockPos pos, BlockPos moved) {
+        if(state.get(Properties.WATERLOGGED)) world.scheduleFluidTick(pos, Fluids.WATER, Fluids.WATER.getTickRate(world));
+        return super.getStateForNeighborUpdate(state, direction, otherState, world, pos, moved);
+    }
+}

src/main/java/fr/adrien1106/reframed/client/ReFramedClient.java

@@ -26,72 +26,68 @@ public class ReFramedClient implements ClientModInitializer {
 		//all frames mustn't be on the SOLID layer because they are not opaque!
 		BlockRenderLayerMap.INSTANCE.putBlocks(RenderLayer.getCutout(), ReFramed.BLOCKS.toArray(new Block[0]));
 
-		HELPER.addReFramedModel(ReFramed.id("button_special")               , HELPER.auto(new Identifier("block/button")));
-		HELPER.addReFramedModel(ReFramed.id("button_pressed_special")       , HELPER.auto(new Identifier("block/button_pressed")));
-		HELPER.addReFramedModel(ReFramed.id("one_candle_special")           , HELPER.auto(new Identifier("block/template_candle")));
-		HELPER.addReFramedModel(ReFramed.id("two_candles_special")          , HELPER.auto(new Identifier("block/template_two_candles")));
-		HELPER.addReFramedModel(ReFramed.id("three_candles_special")        , HELPER.auto(new Identifier("block/template_three_candles")));
-		HELPER.addReFramedModel(ReFramed.id("four_candles_special")         , HELPER.auto(new Identifier("block/template_four_candles")));
-		HELPER.addReFramedModel(ReFramed.id("carpet_special")               , HELPER.auto(new Identifier("block/carpet")));
-		HELPER.addReFramedModel(ReFramed.id("cube_special")                 , HELPER.auto(new Identifier("block/cube")));
-		HELPER.addReFramedModel(ReFramed.id("door_bottom_left_special")     , HELPER.auto(new Identifier("block/door_bottom_left")));
-		HELPER.addReFramedModel(ReFramed.id("door_bottom_right_special")    , HELPER.auto(new Identifier("block/door_bottom_right")));
-		HELPER.addReFramedModel(ReFramed.id("door_top_left_special")        , HELPER.auto(new Identifier("block/door_top_left")));
-		HELPER.addReFramedModel(ReFramed.id("door_top_right_special")       , HELPER.auto(new Identifier("block/door_top_right")));
-		HELPER.addReFramedModel(ReFramed.id("door_bottom_left_open_special"), HELPER.auto(new Identifier("block/door_bottom_left_open")));
-		HELPER.addReFramedModel(ReFramed.id("door_bottom_right_open_special"), HELPER.auto(new Identifier("block/door_bottom_right_open"))); //This is why we dont format code as tables kids
-		HELPER.addReFramedModel(ReFramed.id("door_top_left_open_special")   , HELPER.auto(new Identifier("block/door_top_left_open")));
-		HELPER.addReFramedModel(ReFramed.id("door_top_right_open_special")  , HELPER.auto(new Identifier("block/door_top_right_open")));
-		HELPER.addReFramedModel(ReFramed.id("fence_post_special")           , HELPER.auto(new Identifier("block/fence_post")));
-		HELPER.addReFramedModel(ReFramed.id("fence_gate_special")           , HELPER.auto(new Identifier("block/template_fence_gate")));
-		HELPER.addReFramedModel(ReFramed.id("fence_gate_open_special")      , HELPER.auto(new Identifier("block/template_fence_gate_open")));
-		HELPER.addReFramedModel(ReFramed.id("fence_gate_wall_special")      , HELPER.auto(new Identifier("block/template_fence_gate_wall")));
-		HELPER.addReFramedModel(ReFramed.id("fence_gate_wall_open_special") , HELPER.auto(new Identifier("block/template_fence_gate_wall_open")));
-		HELPER.addReFramedModel(ReFramed.id("glass_pane_post_special")      , HELPER.auto(new Identifier("block/glass_pane_post")));
-		HELPER.addReFramedModel(ReFramed.id("glass_pane_noside_special")    , HELPER.auto(new Identifier("block/glass_pane_noside")));
-		HELPER.addReFramedModel(ReFramed.id("glass_pane_noside_alt_special"), HELPER.auto(new Identifier("block/glass_pane_noside_alt")));
-		HELPER.addReFramedModel(ReFramed.id("pressure_plate_up_special")    , HELPER.auto(new Identifier("block/pressure_plate_up")));
-		HELPER.addReFramedModel(ReFramed.id("pressure_plate_down_special")  , HELPER.auto(new Identifier("block/pressure_plate_down")));
-		HELPER.addReFramedModel(ReFramed.id("slab_special")                 , HELPER.auto(new Identifier("block/slab")));
-		HELPER.addReFramedModel(ReFramed.id("stairs_special")               , HELPER.auto(ReFramed.id("block/stairs")));
-		HELPER.addReFramedModel(ReFramed.id("double_outer_stairs_special")  , HELPER.auto(ReFramed.id("block/double_outer_stairs")));
-		HELPER.addReFramedModel(ReFramed.id("inner_stairs_special")         , HELPER.auto(ReFramed.id("block/inner_stairs")));
-		HELPER.addReFramedModel(ReFramed.id("outer_stairs_special")         , HELPER.auto(ReFramed.id("block/outer_stairs")));
-		HELPER.addReFramedModel(ReFramed.id("outer_side_stairs_special")    , HELPER.auto(ReFramed.id("block/outer_side_stairs")));
-		HELPER.addReFramedModel(ReFramed.id("trapdoor_bottom_special")      , HELPER.auto(new Identifier("block/template_trapdoor_bottom")));
-		HELPER.addReFramedModel(ReFramed.id("trapdoor_top_special")         , HELPER.auto(new Identifier("block/template_trapdoor_top")));
-		HELPER.addReFramedModel(ReFramed.id("wall_post_special")            , HELPER.auto(new Identifier("block/template_wall_post")));
-		
-		//vanilla style models (using "special-sprite replacement" method)
-		HELPER.addReFramedModel(ReFramed.id("lever_special")                , HELPER.json(ReFramed.id("block/lever")));
-		HELPER.addReFramedModel(ReFramed.id("trapdoor_open_special")        , HELPER.json(ReFramed.id("block/trapdoor_open")));
-		HELPER.addReFramedModel(ReFramed.id("lever_on_special")             , HELPER.json(ReFramed.id("block/lever_on")));
-		//these next five only exist because AutoRetexturedModels don't seem to rotate their textures the right way when rotated from a multipart blockstate
-		HELPER.addReFramedModel(ReFramed.id("fence_side_special")           , HELPER.json(ReFramed.id("block/fence_side")));
-		HELPER.addReFramedModel(ReFramed.id("glass_pane_side_special")      , HELPER.json(ReFramed.id("block/glass_pane_side")));
-		HELPER.addReFramedModel(ReFramed.id("glass_pane_side_alt_special")  , HELPER.json(ReFramed.id("block/glass_pane_side_alt")));
-		HELPER.addReFramedModel(ReFramed.id("wall_side_special")            , HELPER.json(ReFramed.id("block/wall_side")));
-		HELPER.addReFramedModel(ReFramed.id("wall_side_tall_special")       , HELPER.json(ReFramed.id("block/wall_side_tall")));
-		
-		//item only models
-		HELPER.addReFramedModel(ReFramed.id("button_inventory_special")     , HELPER.auto(new Identifier("block/button_inventory")));
-		HELPER.addReFramedModel(ReFramed.id("fence_inventory_special")      , HELPER.auto(new Identifier("block/fence_inventory")));
-		HELPER.addReFramedModel(ReFramed.id("fence_post_inventory_special") , HELPER.auto(ReFramed.id("block/fence_post_inventory")));
-		HELPER.addReFramedModel(ReFramed.id("wall_inventory_special")       , HELPER.auto(new Identifier("block/wall_inventory")));
+		// CUBE
+		HELPER.addReFramedModel("cube_special"                      , HELPER.auto(new Identifier("block/cube")));
+		// SMALL_CUBE
+		HELPER.addReFramedModel("small_cube_special"                , HELPER.auto(ReFramed.id("block/small_cube/base")));
+		// SMALL_CUBES_STEP
+		HELPER.addReFramedModel("small_cubes_step_special"          , HELPER.autoDouble(ReFramed.id("block/small_cube/base"), ReFramed.id("block/small_cube/step/base")));
+		HELPER.addReFramedModel("small_cubes_step_reverse_special"  , HELPER.autoDouble(ReFramed.id("block/small_cube/step/base"), ReFramed.id("block/small_cube/base")));
+		// SLAB
+		HELPER.addReFramedModel("slab_special"                      , HELPER.auto(new Identifier("block/slab")));
+		// SLAB_CUBE
+		HELPER.addReFramedModel("double_slab_special"               , HELPER.autoDouble(new Identifier("block/slab"), new Identifier("block/slab_top")));
+		// STAIR
+		HELPER.addReFramedModel("stair_special"                     , HELPER.auto(ReFramed.id("block/stair/straight")));
+		HELPER.addReFramedModel("outers_stair_special"              , HELPER.auto(ReFramed.id("block/stair/double_outer")));
+		HELPER.addReFramedModel("inner_stair_special"               , HELPER.auto(ReFramed.id("block/stair/inner")));
+		HELPER.addReFramedModel("outer_stair_special"               , HELPER.auto(ReFramed.id("block/stair/outer")));
+		HELPER.addReFramedModel("outer_side_stair_special"          , HELPER.auto(ReFramed.id("block/stair/outer_side")));
+		// STAIRS_CUBE
+		HELPER.addReFramedModel("stairs_cube_special"               , HELPER.autoDouble(ReFramed.id("block/stair/straight"), ReFramed.id("block/stair/cube/straight")));
+		HELPER.addReFramedModel("outers_stairs_cube_special"        , HELPER.autoDouble(ReFramed.id("block/stair/double_outer"), ReFramed.id("block/stair/cube/double_outer")));
+		HELPER.addReFramedModel("inner_stairs_cube_special"         , HELPER.autoDouble(ReFramed.id("block/stair/inner"), ReFramed.id("block/stair/cube/inner")));
+		HELPER.addReFramedModel("outer_stairs_cube_special"         , HELPER.autoDouble(ReFramed.id("block/stair/outer"), ReFramed.id("block/stair/cube/outer")));
+		HELPER.addReFramedModel("outer_side_stairs_cube_special"    , HELPER.autoDouble(ReFramed.id("block/stair/outer_side"), ReFramed.id("block/stair/cube/outer_side")));
+		// HALF_STAIR
+		HELPER.addReFramedModel("half_stair_down_special"           , HELPER.auto(ReFramed.id("block/half_stair/down")));
+		HELPER.addReFramedModel("half_stair_side_special"           , HELPER.auto(ReFramed.id("block/half_stair/side")));
+		// HALF_STAIRS_SLAB
+		HELPER.addReFramedModel("half_stairs_slab_down_special"     , HELPER.autoDouble(ReFramed.id("block/half_stair/down"), ReFramed.id("block/half_stair/slab/down")));
+		HELPER.addReFramedModel("half_stairs_slab_side_special"     , HELPER.autoDouble(ReFramed.id("block/half_stair/side"), ReFramed.id("block/half_stair/slab/side")));
+		// HALF_STAIRS_STAIR
+		HELPER.addReFramedModel("half_stairs_stair_down_special"    , HELPER.autoDouble(ReFramed.id("block/half_stair/down"), ReFramed.id("block/half_stair/stair/down")));
+		HELPER.addReFramedModel("half_stairs_stair_side_special"    , HELPER.autoDouble(ReFramed.id("block/half_stair/side"), ReFramed.id("block/half_stair/stair/side")));
+		HELPER.addReFramedModel("half_stairs_stair_reverse_special" , HELPER.autoDouble(ReFramed.id("block/half_stair/stair/side"), ReFramed.id("block/half_stair/side")));
+		// STEP
+		HELPER.addReFramedModel("step_special"                      , HELPER.auto(ReFramed.id("block/step/down")));
+		// STEPS_SLAB
+		HELPER.addReFramedModel("steps_slab_special"                , HELPER.autoDouble(ReFramed.id("block/step/down"), ReFramed.id("block/step/slab/down")));
+		HELPER.addReFramedModel("steps_slab_side_special"           , HELPER.autoDouble(ReFramed.id("block/step/side"), ReFramed.id("block/step/slab/side")));
+		// LAYER
+		HELPER.addReFramedModel("layer_1_special"                   , HELPER.auto(new Identifier("block/snow_height2")));
+		HELPER.addReFramedModel("layer_2_special"                   , HELPER.auto(new Identifier("block/snow_height4")));
+		HELPER.addReFramedModel("layer_3_special"                   , HELPER.auto(new Identifier("block/snow_height6")));
+		HELPER.addReFramedModel("layer_4_special"                   , HELPER.auto(new Identifier("block/snow_height8")));
+		HELPER.addReFramedModel("layer_5_special"                   , HELPER.auto(new Identifier("block/snow_height10")));
+		HELPER.addReFramedModel("layer_6_special"                   , HELPER.auto(new Identifier("block/snow_height12")));
+		HELPER.addReFramedModel("layer_7_special"                   , HELPER.auto(new Identifier("block/snow_height14")));
+		HELPER.addReFramedModel("layer_8_special"                   , HELPER.auto(new Identifier("block/cube")));
 
 		//item model assignments (in lieu of models/item/___.json)
-		HELPER.assignItemModel(ReFramed.id("button_inventory_special")      , ReFramed.BUTTON);
-		HELPER.assignItemModel(ReFramed.id("carpet_special")                , ReFramed.CARPET);
-		HELPER.assignItemModel(ReFramed.id("cube_special")                  , ReFramed.CUBE);
-		HELPER.assignItemModel(ReFramed.id("fence_inventory_special")       , ReFramed.FENCE);
-		HELPER.assignItemModel(ReFramed.id("fence_gate_special")            , ReFramed.FENCE_GATE);
-		HELPER.assignItemModel(ReFramed.id("trapdoor_bottom_special")       , ReFramed.IRON_TRAPDOOR);
-		HELPER.assignItemModel(ReFramed.id("fence_post_inventory_special")  , ReFramed.POST);
-		HELPER.assignItemModel(ReFramed.id("pressure_plate_up_special")     , ReFramed.PRESSURE_PLATE);
-		HELPER.assignItemModel(ReFramed.id("slab_special")                  , ReFramed.SLAB);
-		HELPER.assignItemModel(ReFramed.id("stairs_special")                , ReFramed.STAIRS);
-		HELPER.assignItemModel(ReFramed.id("trapdoor_bottom_special")       , ReFramed.TRAPDOOR);
-		HELPER.assignItemModel(ReFramed.id("wall_inventory_special")        , ReFramed.WALL);
+		HELPER.assignItemModel("cube_special"                  , ReFramed.CUBE);
+		HELPER.assignItemModel("small_cube_special"            , ReFramed.SMALL_CUBE);
+		HELPER.assignItemModel("small_cubes_step_special"      , ReFramed.SMALL_CUBES_STEP);
+		HELPER.assignItemModel("slab_special"                  , ReFramed.SLAB);
+		HELPER.assignItemModel("double_slab_special"           , ReFramed.SLABS_CUBE);
+		HELPER.assignItemModel("stair_special"                 , ReFramed.STAIR);
+		HELPER.assignItemModel("stairs_cube_special"           , ReFramed.STAIRS_CUBE);
+		HELPER.assignItemModel("half_stair_down_special"       , ReFramed.HALF_STAIR);
+		HELPER.assignItemModel("half_stairs_slab_down_special" , ReFramed.HALF_STAIRS_SLAB);
+		HELPER.assignItemModel("half_stairs_stair_down_special", ReFramed.HALF_STAIRS_STAIR);
+		HELPER.assignItemModel("step_special"                  , ReFramed.STEP);
+		HELPER.assignItemModel("steps_slab_special"            , ReFramed.STEPS_SLAB);
+		HELPER.assignItemModel("layer_1_special"               , ReFramed.LAYER);
 	}
 	
 	private void privateInit() {

src/main/java/fr/adrien1106/reframed/client/ReFramedClientHelper.java

@@ -1,8 +1,11 @@
 package fr.adrien1106.reframed.client;
 
-import fr.adrien1106.reframed.client.model.apperance.CamoAppearanceManager;
+import fr.adrien1106.reframed.ReFramed;
 import fr.adrien1106.reframed.client.model.UnbakedAutoRetexturedModel;
+import fr.adrien1106.reframed.client.model.UnbakedDoubleRetexturedModel;
 import fr.adrien1106.reframed.client.model.UnbakedJsonRetexturedModel;
+import fr.adrien1106.reframed.client.model.UnbakedRetexturedModel;
+import fr.adrien1106.reframed.client.model.apperance.CamoAppearanceManager;
 import net.fabricmc.fabric.api.renderer.v1.Renderer;
 import net.fabricmc.fabric.api.renderer.v1.RendererAccess;
 import net.fabricmc.loader.api.FabricLoader;
@@ -23,20 +26,25 @@ public class ReFramedClientHelper {
 
 	private final ReFramedModelProvider prov;
 
-	public UnbakedModel auto(Identifier parent) {
+
+	public UnbakedRetexturedModel auto(Identifier parent) {
 		return new UnbakedAutoRetexturedModel(parent);
 	}
 
-	public UnbakedModel json(Identifier parent) {
+	public UnbakedRetexturedModel json(Identifier parent) {
 		return new UnbakedJsonRetexturedModel(parent);
 	}
 
-	public void addReFramedModel(Identifier id, UnbakedModel unbaked) {
-		prov.addReFramedModel(id, unbaked);
+	public UnbakedModel autoDouble(Identifier first, Identifier second) {
+		return new UnbakedDoubleRetexturedModel(auto(first), auto(second));
 	}
 
-	public void assignItemModel(Identifier model_id, ItemConvertible... item_convertibles) {
-		prov.assignItemModel(model_id, item_convertibles);
+	public void addReFramedModel(String id, UnbakedModel unbaked) {
+		prov.addReFramedModel(ReFramed.id(id), unbaked);
+	}
+
+	public void assignItemModel(String id, ItemConvertible... item_convertibles) {
+		prov.assignItemModel(ReFramed.id(id), item_convertibles);
 	}
 
 	public CamoAppearanceManager getCamoApperanceManager(Function<SpriteIdentifier, Sprite> spriteLookup) {

src/main/java/fr/adrien1106/reframed/client/ReFramedModelProvider.java

@@ -37,9 +37,9 @@ public class ReFramedModelProvider implements ModelResourceProvider, ModelVarian
 	//but json models are never allowed to have non-json models as a parent, and frame unbaked models are not json models. Ah well.
 	//So, instead, we use a ModelVariantProvider to redirect attempts to load the item:id#inventory model.
 	@Override
-	public @Nullable UnbakedModel loadModelVariant(ModelIdentifier modelId, ModelProviderContext context) {
-		Identifier customModelId = itemAssignments.get(modelId);
-		return customModelId == null ? null : loadModelResource(customModelId, context);
+	public @Nullable UnbakedModel loadModelVariant(ModelIdentifier model, ModelProviderContext context) {
+		Identifier custom_model = itemAssignments.get(model);
+		return custom_model == null ? null : loadModelResource(custom_model, context);
 	}
 	
 	/// camo appearance manager cache

src/main/java/fr/adrien1106/reframed/client/model/DoubleRetexturingBakedModel.java

@@ -0,0 +1,50 @@
+package fr.adrien1106.reframed.client.model;
+
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+import net.fabricmc.fabric.api.renderer.v1.model.ForwardingBakedModel;
+import net.fabricmc.fabric.api.renderer.v1.render.RenderContext;
+import net.minecraft.block.BlockState;
+import net.minecraft.client.texture.Sprite;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.random.Random;
+import net.minecraft.world.BlockRenderView;
+
+import java.util.List;
+import java.util.function.Supplier;
+
+@Environment(EnvType.CLIENT)
+public class DoubleRetexturingBakedModel extends ForwardingBakedModel implements MultiRetexturableModel {
+
+    private final ForwardingBakedModel model_1, model_2;
+    public DoubleRetexturingBakedModel(ForwardingBakedModel model_1, ForwardingBakedModel model_2) {
+        this.wrapped = model_1.getWrappedModel();
+        this.model_1 = model_1;
+        this.model_2 = model_2;
+    }
+
+    @Override
+    public boolean isVanillaAdapter() {
+        return false;
+    }
+
+    @Override
+    public Sprite getParticleSprite() {
+        return model_1.getParticleSprite();
+    }
+
+    @Override
+    public void emitBlockQuads(BlockRenderView world, BlockState state, BlockPos pos, Supplier<Random> randomSupplier, RenderContext context) {}
+
+    @Override // models are emitted here because no checks are done on items
+    public void emitItemQuads(ItemStack stack, Supplier<Random> randomSupplier, RenderContext context) {
+        model_1.emitItemQuads(stack, randomSupplier, context);
+        model_2.emitItemQuads(stack, randomSupplier, context);
+    }
+
+    @Override
+    public List<ForwardingBakedModel> models() {
+        return List.of(model_1, model_2);
+    }
+}

src/main/java/fr/adrien1106/reframed/client/model/DynamicBakedModel.java

@@ -6,5 +6,5 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.BlockRenderView;
 
 public interface DynamicBakedModel {
-    BakedModel computeQuads(BlockRenderView level, BlockState state, BlockPos pos);
+    BakedModel computeQuads(BlockRenderView level, BlockState state, BlockPos pos, int theme_index);
 }

src/main/java/fr/adrien1106/reframed/client/model/MeshTransformUtil.java

@@ -1,83 +0,0 @@
-package fr.adrien1106.reframed.client.model;
-
-import fr.adrien1106.reframed.client.ReFramedClient;
-import net.fabricmc.fabric.api.renderer.v1.mesh.Mesh;
-import net.fabricmc.fabric.api.renderer.v1.mesh.MeshBuilder;
-import net.fabricmc.fabric.api.renderer.v1.mesh.QuadEmitter;
-import net.fabricmc.fabric.api.renderer.v1.render.RenderContext;
-import net.minecraft.client.render.model.ModelBakeSettings;
-import net.minecraft.util.math.Direction;
-import org.joml.Matrix4f;
-import org.joml.Vector3f;
-import org.joml.Vector4f;
-
-import java.util.EnumMap;
-import java.util.Map;
-
-public class MeshTransformUtil {
-	public static Mesh pretransformMesh(Mesh mesh, RetexturingBakedModel.RetexturingTransformer transform) {
-		MeshBuilder builder = ReFramedClient.HELPER.getFabricRenderer().meshBuilder();
-		QuadEmitter emitter = builder.getEmitter();
-		
-		mesh.forEach(quad -> {
-			int i = -1;
-			do {
-				emitter.copyFrom(quad);
-				i = transform.transform(emitter, i);
-			} while (i > 0);
-		});
-		
-		return builder.build();
-	}
-	
-	public static Map<Direction, Direction> facePermutation(Matrix4f mat) {
-		Map<Direction, Direction> facePermutation = new EnumMap<>(Direction.class);
-		for(Direction input : Direction.values()) {
-			Direction output = Direction.transform(mat, input);
-			facePermutation.put(input, output);
-		}
-		return facePermutation;
-	}
-	
-	public static RenderContext.QuadTransform applyAffine(ModelBakeSettings settings) {
-		return applyMatrix(settings.getRotation().getMatrix());
-	}
-	
-	public static RenderContext.QuadTransform applyMatrix(Matrix4f mat) {
-		Map<Direction, Direction> facePermutation = facePermutation(mat);
-		Vector3f pos3 = new Vector3f();
-		Vector4f pos4 = new Vector4f();
-		
-		return quad -> {
-			//For each vertex:
-			for(int i = 0; i < 4; i++) {
-				//Copy pos into a vec3, then a vec4. the w component is set to 0 since this is a point, not a normal
-				quad.copyPos(i, pos3);
-				pos3.add(-0.5f, -0.5f, -0.5f);
-				pos4.set(pos3, 0);
-				
-				//Compute the matrix-vector product. This function mutates the vec4 in-place.
-				//Note that `transformAffine` has the same purpose as `transform`; the difference is it
-				//assumes (without checking) that the last row of the matrix is 0,0,0,1, as an optimization
-				mat.transform(pos4);
-				
-				//Manually copy the data back onto the vertex
-				quad.pos(i, pos4.x + 0.5f, pos4.y + 0.5f, pos4.z + 0.5f);
-			}
-			
-			//permute tags
-			int tag = quad.tag();
-			if(tag != 0) quad.tag(facePermutation.get(RetexturingBakedModel.DIRECTIONS[tag - 1]).ordinal() + 1);
-			
-			//permute lighting face (?)
-			quad.nominalFace(facePermutation.get(quad.lightFace()));
-			
-			//permute cullface
-			Direction cull = quad.cullFace();
-			if(cull != null) quad.cullFace(facePermutation.get(cull));
-			
-			//Output the quad
-			return true;
-		};
-	}
-}

src/main/java/fr/adrien1106/reframed/client/model/MultiRetexturableModel.java

@@ -0,0 +1,10 @@
+package fr.adrien1106.reframed.client.model;
+
+import net.fabricmc.fabric.api.renderer.v1.model.ForwardingBakedModel;
+
+import java.util.List;
+
+public interface MultiRetexturableModel {
+
+    List<ForwardingBakedModel> models();
+}

src/main/java/fr/adrien1106/reframed/client/model/QuadPosBounds.java

@@ -1,11 +1,14 @@
 package fr.adrien1106.reframed.client.model;
 
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
 import net.fabricmc.fabric.api.renderer.v1.mesh.MutableQuadView;
 import net.fabricmc.fabric.api.renderer.v1.mesh.QuadView;
 import net.minecraft.util.math.Direction;
 import net.minecraft.util.math.MathHelper;
 import org.joml.Vector3f;
 
+@Environment(EnvType.CLIENT)
 public record QuadPosBounds(float min_x, float max_x, float min_y, float max_y, float min_z, float max_z) {
 
     public static QuadPosBounds read(QuadView quad) {
@@ -76,4 +79,15 @@ public record QuadPosBounds(float min_x, float max_x, float min_y, float max_y,
             quad.pos(i, pos);
         }
     }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof QuadPosBounds other)) return false;
+        return MathHelper.approximatelyEquals(min_x, other.min_x)
+            && MathHelper.approximatelyEquals(min_y, other.min_y)
+            && MathHelper.approximatelyEquals(min_z, other.min_z)
+            && MathHelper.approximatelyEquals(max_x, other.max_x)
+            && MathHelper.approximatelyEquals(max_y, other.max_y)
+            && MathHelper.approximatelyEquals(max_z, other.max_z);
+    }
 }

src/main/java/fr/adrien1106/reframed/client/model/QuadUvBounds.java

@@ -1,10 +1,13 @@
 package fr.adrien1106.reframed.client.model;
 
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
 import net.fabricmc.fabric.api.renderer.v1.mesh.MutableQuadView;
 import net.fabricmc.fabric.api.renderer.v1.mesh.QuadView;
 import net.minecraft.client.texture.Sprite;
 import net.minecraft.util.math.MathHelper;
 
+@Environment(EnvType.CLIENT)
 public record QuadUvBounds(float minU, float maxU, float minV, float maxV) {
 	public static QuadUvBounds read(QuadView quad) {
 		float u0 = quad.u(0), u1 = quad.u(1), u2 = quad.u(2), u3 = quad.u(3);

src/main/java/fr/adrien1106/reframed/client/model/RetexturingBakedModel.java

@@ -1,14 +1,15 @@
 package fr.adrien1106.reframed.client.model;
 
+import fr.adrien1106.reframed.block.ReFramedBlock;
 import fr.adrien1106.reframed.block.ReFramedEntity;
-import fr.adrien1106.reframed.client.model.apperance.SpriteProperties;
+import fr.adrien1106.reframed.client.ReFramedClient;
 import fr.adrien1106.reframed.mixin.MinecraftAccessor;
 import fr.adrien1106.reframed.client.model.apperance.CamoAppearance;
 import fr.adrien1106.reframed.client.model.apperance.CamoAppearanceManager;
 import fr.adrien1106.reframed.client.model.apperance.WeightedComputedAppearance;
-import net.fabricmc.fabric.api.renderer.v1.mesh.Mesh;
-import net.fabricmc.fabric.api.renderer.v1.mesh.MutableQuadView;
-import net.fabricmc.fabric.api.renderer.v1.mesh.QuadEmitter;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
+import it.unimi.dsi.fastutil.objects.Object2ObjectLinkedOpenHashMap;
+import net.fabricmc.fabric.api.renderer.v1.mesh.*;
 import net.fabricmc.fabric.api.renderer.v1.model.ForwardingBakedModel;
 import net.fabricmc.fabric.api.renderer.v1.render.RenderContext;
 import net.minecraft.block.BlockState;
@@ -23,36 +24,60 @@ import net.minecraft.util.math.Direction;
 import net.minecraft.util.math.random.Random;
 import net.minecraft.world.BlockRenderView;
 
-import java.util.List;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Supplier;
 
 public abstract class RetexturingBakedModel extends ForwardingBakedModel {
-	public RetexturingBakedModel(BakedModel baseModel, CamoAppearanceManager tam, ModelBakeSettings settings, BlockState itemModelState, boolean ao) {
-		this.wrapped = baseModel; //field from the superclass; vanilla getQuads etc. will delegate through to this
+	public RetexturingBakedModel(BakedModel base_model, CamoAppearanceManager tam, int theme_index, ModelBakeSettings settings, BlockState item_state, boolean ao) {
+		this.wrapped = base_model; //field from the superclass; vanilla getQuads etc. will delegate through to this
 
-		this.tam = tam;
-		this.uvlock = settings.isUvLocked();
-		this.itemModelState = itemModelState;
+		this.appearance_manager = tam;
+		this.theme_index = theme_index;
+		this.uv_lock = settings.isUvLocked();
+		this.item_state = item_state;
 		this.ao = ao;
+
+		int cache_size = 64; // default is 64 why don't ask me and it should get overwritten
+		if (item_state.getBlock() instanceof ReFramedBlock frame_block) cache_size = frame_block.getModelStateCount() + 1;
+		BASE_MESH_CACHE = new Object2ObjectLinkedOpenHashMap<>(cache_size, 0.25f) {
+			@Override
+			protected void rehash(int v) {}
+		};
 	}
 
-	protected final CamoAppearanceManager tam;
-	protected final boolean uvlock;
-	protected final BlockState itemModelState;
+	protected final CamoAppearanceManager appearance_manager;
+	protected final int theme_index;
+	protected final boolean uv_lock;
 	protected final boolean ao;
+	protected final BlockState item_state;
 
-	protected record MeshCacheKey(BlockState state, TransformCacheKey transform) {}
-	protected final ConcurrentMap<MeshCacheKey, Mesh> retextured_meshes = new ConcurrentHashMap<>(); //mutable, append-only cache
-	protected record TransformCacheKey(CamoAppearance appearance, int model_id) {}
-	protected final ConcurrentMap<TransformCacheKey, RetexturingTransformer> retextured_transforms = new ConcurrentHashMap<>();
+	protected record MeshCacheKey(Object state_key, CamoAppearance appearance, int model_id) {}
+	/** cache that store retextured models */
+	protected final Object2ObjectLinkedOpenHashMap<MeshCacheKey, Mesh> RETEXTURED_MESH_CACHE =
+		new Object2ObjectLinkedOpenHashMap<>(128, 0.25f) {
+			@Override
+			protected void rehash(int v) {}
+		};
 
-	protected static final Direction[] DIRECTIONS = Direction.values();
-	protected static final Direction[] DIRECTIONS_AND_NULL = new Direction[DIRECTIONS.length + 1];
-	static { System.arraycopy(DIRECTIONS, 0, DIRECTIONS_AND_NULL, 0, DIRECTIONS.length); }
+	/** cache that stores the base meshes which has the size of the amount of models */
+	protected final Object2ObjectLinkedOpenHashMap<Object, Mesh> BASE_MESH_CACHE;
 
-	protected abstract Mesh getBaseMesh(BlockState state);
+	protected static final Direction[] DIRECTIONS_AND_NULL;
+	static {
+		Direction[] values = Direction.values();
+		DIRECTIONS_AND_NULL = new Direction[values.length + 1];
+		System.arraycopy(values, 0, DIRECTIONS_AND_NULL, 0, values.length);
+	}
+
+	protected Mesh getBaseMesh(Object key, BlockState state) {
+		//Convert models to re-texturable Meshes lazily, the first time we encounter each blockstate
+		if (BASE_MESH_CACHE.containsKey(key)) return BASE_MESH_CACHE.getAndMoveToFirst(key);
+		Mesh mesh = convertModel(state);
+		BASE_MESH_CACHE.putAndMoveToFirst(key, mesh);
+		return mesh;
+	}
+
+	protected abstract Mesh convertModel(BlockState state);
 	
 	@Override
 	public boolean isVanillaAdapter() {
@@ -61,39 +86,42 @@ public abstract class RetexturingBakedModel extends ForwardingBakedModel {
 	
 	@Override
 	public Sprite getParticleSprite() {
-		return tam.getDefaultAppearance().getSprites(Direction.UP, 0).get(0).sprite();
+		return appearance_manager.getDefaultAppearance(theme_index).getSprites(Direction.UP, 0).get(0).sprite();
 	}
 	
 	@Override
 	public void emitBlockQuads(BlockRenderView world, BlockState state, BlockPos pos, Supplier<Random> randomSupplier, RenderContext context) {
-		BlockState theme = (world.getBlockEntityRenderData(pos) instanceof BlockState s) ? s : null;
+		// skip render if block not a frame (which should always be the case
+		if (!(state.getBlock() instanceof ReFramedBlock frame_block)) return;
+		BlockState theme = (world.getBlockEntity(pos) instanceof ThemeableBlockEntity s) ? s.getTheme(theme_index) : null;
 		QuadEmitter quad_emitter = context.getEmitter();
 		if(theme == null || theme.isAir()) {
-			getUntintedRetexturedMesh(new MeshCacheKey(state, new TransformCacheKey(tam.getDefaultAppearance(), 0)), 0).outputTo(quad_emitter);
+			getRetexturedMesh(
+				new MeshCacheKey(
+					frame_block.getModelCacheKey(state),
+					appearance_manager.getDefaultAppearance(theme_index),
+					0
+				),
+				state
+			).outputTo(quad_emitter);
 			return;
 		}
 		if(theme.getBlock() == Blocks.BARRIER) return;
 		
-		CamoAppearance camo = tam.getCamoAppearance(world, theme, pos);
+		CamoAppearance camo = appearance_manager.getCamoAppearance(world, theme, pos, theme_index, false);
 		long seed = theme.getRenderingSeed(pos);
 		int model_id = 0;
 		if (camo instanceof WeightedComputedAppearance wca) model_id = wca.getAppearanceIndex(seed);
 
 		int tint = 0xFF000000 | MinecraftClient.getInstance().getBlockColors().getColor(theme, world, pos, 0);
-		Mesh untintedMesh = getUntintedRetexturedMesh(
-			new MeshCacheKey(
-				state,
-				new TransformCacheKey(camo, model_id)
-			),
-			seed
-		);
+		Mesh untintedMesh = getRetexturedMesh(new MeshCacheKey(frame_block.getModelCacheKey(state), camo, model_id), state);
 		
 		//The specific tint might vary a lot; imagine grass color smoothly changing. Trying to bake the tint into
 		//the cached mesh will pollute it with a ton of single-use meshes with only slightly different colors.
 		if(tint == 0xFFFFFFFF) {
 			untintedMesh.outputTo(quad_emitter);
 		} else {
-			context.pushTransform(new TintingTransformer(camo, tint, seed));
+			context.pushTransform(new TintingTransformer(camo, model_id, tint));
 			untintedMesh.outputTo(quad_emitter);
 			context.popTransform();
 		}
@@ -103,105 +131,71 @@ public abstract class RetexturingBakedModel extends ForwardingBakedModel {
 	public void emitItemQuads(ItemStack stack, Supplier<Random> randomSupplier, RenderContext context) {
 		//cheeky: if the item has NBT data, pluck out the blockstate from it & look up the item color provider
 		//none of this is accessible unless you're in creative mode doing ctrl-pick btw
-		CamoAppearance nbtAppearance;
+		CamoAppearance appearance;
 		int tint;
-		BlockState theme = ReFramedEntity.readStateFromItem(stack);
+		BlockState theme = ReFramedEntity.readStateFromItem(stack, theme_index);
 		if(!theme.isAir()) {
-			nbtAppearance = tam.getCamoAppearance(null, theme, null);
+			appearance = appearance_manager.getCamoAppearance(null, theme, null, theme_index, true);
 			tint = 0xFF000000 | ((MinecraftAccessor) MinecraftClient.getInstance()).getItemColors().getColor(new ItemStack(theme.getBlock()), 0);
 		} else {
-			nbtAppearance = tam.getDefaultAppearance();
+			appearance = appearance_manager.getDefaultAppearance(theme_index);
 			tint = 0xFFFFFFFF;
 		}
 		
-		Mesh untintedMesh = getUntintedRetexturedMesh(new MeshCacheKey(itemModelState, new TransformCacheKey(nbtAppearance, 0)), 0);
+		Mesh untintedMesh = getRetexturedMesh(new MeshCacheKey("I", appearance, 0), item_state);
 
 		QuadEmitter quad_emitter = context.getEmitter();
 		if(tint == 0xFFFFFFFF) {
 			untintedMesh.outputTo(quad_emitter);
 		} else {
-			context.pushTransform(new TintingTransformer(nbtAppearance, tint, 0));
+			context.pushTransform(new TintingTransformer(appearance, 0, tint));
 			untintedMesh.outputTo(quad_emitter);
 			context.popTransform();
 		}
 	}
 	
-	protected Mesh getUntintedRetexturedMesh(MeshCacheKey key, long seed) {
-		return retextured_meshes.computeIfAbsent(key, (k) -> createUntintedRetexturedMesh(k, seed));
+	protected Mesh getRetexturedMesh(MeshCacheKey key, BlockState state) {
+		if (RETEXTURED_MESH_CACHE.containsKey(key)) return RETEXTURED_MESH_CACHE.getAndMoveToFirst(key);
+		Mesh mesh = transformMesh(key, state);
+		RETEXTURED_MESH_CACHE.putAndMoveToFirst(key, mesh);
+		return mesh;
 	}
 	
-	protected Mesh createUntintedRetexturedMesh(MeshCacheKey key, long seed) {
-		RetexturingTransformer transformer = retextured_transforms.computeIfAbsent(key.transform, (k) -> new RetexturingTransformer(k.appearance, seed));
-		return MeshTransformUtil.pretransformMesh(getBaseMesh(key.state), transformer);
-	}
+	protected Mesh transformMesh(MeshCacheKey key, BlockState state) {
+		MeshBuilder builder = ReFramedClient.HELPER.getFabricRenderer().meshBuilder();
+		QuadEmitter emitter = builder.getEmitter();
 
-	public class RetexturingTransformer {
-		private final long seed;
-		protected RetexturingTransformer(CamoAppearance ta, long seed) {
-			this.ta = ta;
-			this.seed = seed;
-		}
+		AtomicInteger quad_index = new AtomicInteger();
+		getBaseMesh(key.state_key, state).forEach(quad -> {
+			int i = -1;
+			do {
+				emitter.copyFrom(quad);
+				i = key.appearance.transformQuad(emitter, i, quad_index.get(), key.model_id, ao, uv_lock);
+			} while (i > 0);
+			// kinda weird to do it like that but other directions don't use the quad_index so it doesn't matter
+			if (quad.cullFace() == null) quad_index.getAndIncrement();
+		});
 
-		protected final CamoAppearance ta;
-
-		public int transform(QuadEmitter quad, int i) {
-			if(quad.tag() == 0) return 0; //Pass the quad through unmodified.
-
-			Direction direction = quad.nominalFace();
-			List<SpriteProperties> sprites = ta.getSprites(direction, seed);
-			if (i == -1) i = sprites.size();
-
-			SpriteProperties properties = sprites.get(sprites.size() - i);
-			i--;
-			QuadPosBounds bounds = properties.bounds();
-
-			if (bounds == null) { // sprite applies anywhere e.g. default behaviour
-				quad.material(ta.getRenderMaterial(ao));
-				quad.spriteBake(
-					properties.sprite(),
-					MutableQuadView.BAKE_NORMALIZED
-						| properties.flags()
-						| (uvlock ? MutableQuadView.BAKE_LOCK_UV : 0)
-				);
-				quad.tag(i+1);
-				quad.emit();
-				return i;
-			}
-
-			// verify if sprite covers the current quad and apply the new size
-			QuadPosBounds origin_bounds = QuadPosBounds.read(quad, false);
-			if (!bounds.matches(origin_bounds)) return i;
-
-			// apply new quad shape
-			quad.material(ta.getRenderMaterial(ao));
-			bounds.intersection(origin_bounds, direction.getAxis()).apply(quad, origin_bounds);
-			quad.spriteBake( // TODO check if the flags are usefull because it seems to be braking the functioning of it
-				properties.sprite(),
-				MutableQuadView.BAKE_NORMALIZED
-					| MutableQuadView.BAKE_LOCK_UV
-			);
-			quad.tag(i+1);
-			quad.emit();
-			return i;
-		}
+		return builder.build();
 	}
 
 	protected static class TintingTransformer implements RenderContext.QuadTransform {
-		private final long seed;
-		protected TintingTransformer(CamoAppearance ta, int tint, long seed) {
-			this.ta = ta;
-			this.tint = tint;
-			this.seed = seed;
-		}
+		private final CamoAppearance appearance;
+		private final int model_id;
+		private final int tint;
 
-		protected final CamoAppearance ta;
-		protected final int tint;
+		protected TintingTransformer(CamoAppearance appearance, int model_id, int tint) {
+			this.appearance = appearance;
+			this.model_id = model_id;
+			this.tint = tint;
+		}
 
 		@Override
 		public boolean transform(MutableQuadView quad) {
-			if(quad.tag() == 0) return true;
+			int camo_quad_index = quad.tag() - ((quad.tag() >>> 8) << 8);
+			if(camo_quad_index == 0) return true;
 
-			if(ta.hasColor(quad.nominalFace(), seed, quad.tag())) quad.color(tint, tint, tint, tint);
+			if(appearance.hasColor(quad.nominalFace(), model_id, camo_quad_index)) quad.color(tint, tint, tint, tint);
 
 			return true;
 		}

src/main/java/fr/adrien1106/reframed/client/model/UnbakedAutoRetexturedModel.java

@@ -12,7 +12,6 @@ import net.minecraft.client.render.model.BakedModel;
 import net.minecraft.client.render.model.BakedQuad;
 import net.minecraft.client.render.model.Baker;
 import net.minecraft.client.render.model.ModelBakeSettings;
-import net.minecraft.client.render.model.UnbakedModel;
 import net.minecraft.client.texture.Sprite;
 import net.minecraft.client.util.SpriteIdentifier;
 import net.minecraft.util.Identifier;
@@ -20,54 +19,31 @@ import net.minecraft.util.math.Direction;
 import net.minecraft.util.math.random.Random;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.Collection;
-import java.util.Collections;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentMap;
 import java.util.function.Function;
 
-public class UnbakedAutoRetexturedModel implements UnbakedModel {
+public class UnbakedAutoRetexturedModel extends UnbakedRetexturedModel {
+
 	public UnbakedAutoRetexturedModel(Identifier parent) {
-		this.parent = parent;
-	}
-	
-	protected final Identifier parent;
-	protected BlockState itemModelState = Blocks.AIR.getDefaultState();
-	protected boolean ao = true;
-	
-	@Override
-	public Collection<Identifier> getModelDependencies() {
-		return Collections.singletonList(parent);
-	}
-	
-	@Override
-	public void setParents(Function<Identifier, UnbakedModel> function) {
-		function.apply(parent).setParents(function);
+		super(parent);
+		item_state = Blocks.AIR.getDefaultState();
 	}
 	
 	@Nullable
 	@Override
-	public BakedModel bake(Baker baker, Function<SpriteIdentifier, Sprite> spriteLookup, ModelBakeSettings modelBakeSettings, Identifier identifier) {
+	public BakedModel bake(Baker baker, Function<SpriteIdentifier, Sprite> texture_getter, ModelBakeSettings bake_settings, Identifier identifier) {
 		return new RetexturingBakedModel(
-			baker.bake(parent, modelBakeSettings),
-			ReFramedClient.HELPER.getCamoApperanceManager(spriteLookup),
-			modelBakeSettings,
-			itemModelState,
+			baker.bake(parent, bake_settings),
+			ReFramedClient.HELPER.getCamoApperanceManager(texture_getter),
+			theme_index,
+			bake_settings,
+			item_state,
 			ao
 		) {
-			final ConcurrentMap<BlockState, Mesh> jsonToMesh = new ConcurrentHashMap<>();
-			
-			@Override
-			protected Mesh getBaseMesh(BlockState state) {
-				//Convert models to retexturable Meshes lazily, the first time we encounter each blockstate
-				return jsonToMesh.computeIfAbsent(state, this::convertModel);
-			}
-			
-			private Mesh convertModel(BlockState state) {
+			protected Mesh convertModel(BlockState state) {
 				Renderer r = ReFramedClient.HELPER.getFabricRenderer();
 				MeshBuilder builder = r.meshBuilder();
 				QuadEmitter emitter = builder.getEmitter();
-				RenderMaterial mat = tam.getCachedMaterial(state, false);
+				RenderMaterial mat = appearance_manager.getCachedMaterial(state, false);
 				
 				Random rand = Random.create(42);
 

src/main/java/fr/adrien1106/reframed/client/model/UnbakedDoubleRetexturedModel.java

@@ -0,0 +1,48 @@
+package fr.adrien1106.reframed.client.model;
+
+import net.fabricmc.fabric.api.renderer.v1.model.ForwardingBakedModel;
+import net.minecraft.client.render.model.BakedModel;
+import net.minecraft.client.render.model.Baker;
+import net.minecraft.client.render.model.ModelBakeSettings;
+import net.minecraft.client.render.model.UnbakedModel;
+import net.minecraft.client.texture.Sprite;
+import net.minecraft.client.util.SpriteIdentifier;
+import net.minecraft.util.Identifier;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.function.Function;
+
+public class UnbakedDoubleRetexturedModel implements UnbakedModel {
+
+    protected final UnbakedModel model_1;
+    protected final UnbakedModel model_2;
+
+    public UnbakedDoubleRetexturedModel(UnbakedRetexturedModel model_1, UnbakedRetexturedModel model_2) {
+        this.model_1 = model_1;
+        this.model_2 = model_2;
+        model_2.setThemeIndex(2);
+    }
+
+
+    @Override
+    public Collection<Identifier> getModelDependencies() {
+        return List.of(((List<Identifier>) model_1.getModelDependencies()).get(0), ((List<Identifier>) model_2.getModelDependencies()).get(0));
+    }
+
+    @Override
+    public void setParents(Function<Identifier, UnbakedModel> function) {
+        model_1.setParents(function);
+        model_2.setParents(function);
+    }
+
+    @Nullable
+    @Override
+    public BakedModel bake(Baker baker, Function<SpriteIdentifier, Sprite> texture_getter, ModelBakeSettings model_bake_settings, Identifier identifier) {
+        return new DoubleRetexturingBakedModel(
+            (ForwardingBakedModel) model_1.bake(baker, texture_getter, model_bake_settings, identifier),
+            (ForwardingBakedModel) model_2.bake(baker, texture_getter, model_bake_settings, identifier)
+        );
+    }
+}

src/main/java/fr/adrien1106/reframed/client/model/UnbakedJsonRetexturedModel.java

@@ -8,7 +8,10 @@ import net.fabricmc.fabric.api.renderer.v1.mesh.Mesh;
 import net.fabricmc.fabric.api.renderer.v1.mesh.MeshBuilder;
 import net.fabricmc.fabric.api.renderer.v1.mesh.QuadEmitter;
 import net.minecraft.block.BlockState;
-import net.minecraft.client.render.model.*;
+import net.minecraft.client.render.model.BakedModel;
+import net.minecraft.client.render.model.BakedQuad;
+import net.minecraft.client.render.model.Baker;
+import net.minecraft.client.render.model.ModelBakeSettings;
 import net.minecraft.client.texture.Sprite;
 import net.minecraft.client.util.SpriteIdentifier;
 import net.minecraft.screen.PlayerScreenHandler;
@@ -17,65 +20,38 @@ import net.minecraft.util.math.Direction;
 import net.minecraft.util.math.random.Random;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.Collection;
-import java.util.Collections;
 import java.util.Objects;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentMap;
 import java.util.function.Function;
 
-public class UnbakedJsonRetexturedModel implements UnbakedModel {
+public class UnbakedJsonRetexturedModel extends UnbakedRetexturedModel {
 	public UnbakedJsonRetexturedModel(Identifier parent) {
-		this.parent = parent;
-	}
-	
-	protected final Identifier parent;
-	protected BlockState itemModelState;
-	protected boolean ao = true;
-	
-	@Override
-	public Collection<Identifier> getModelDependencies() {
-		return Collections.singletonList(parent);
-	}
-	
-	@Override
-	public void setParents(Function<Identifier, UnbakedModel> function) {
-		function.apply(parent).setParents(function);
+        super(parent);
 	}
 	
 	@Nullable
 	@Override
-	public BakedModel bake(Baker baker, Function<SpriteIdentifier, Sprite> spriteLookup, ModelBakeSettings modelBakeSettings, Identifier identifier) {
-		Direction[] DIRECTIONS = RetexturingBakedModel.DIRECTIONS;
+	public BakedModel bake(Baker baker, Function<SpriteIdentifier, Sprite> spriteLookup, ModelBakeSettings bake_settings, Identifier identifier) {
+		Direction[] directions = Direction.values();
 		
-		Sprite[] specialSprites = new Sprite[DIRECTIONS.length];
-		for(int i = 0; i < DIRECTIONS.length; i++) {
-			SpriteIdentifier id = new SpriteIdentifier(PlayerScreenHandler.BLOCK_ATLAS_TEXTURE, ReFramed.id("reframed_special/" + DIRECTIONS[i].getName()));
-			specialSprites[i] = Objects.requireNonNull(spriteLookup.apply(id), () -> "Couldn't find sprite " + id + " !");
+		Sprite[] sprites = new Sprite[directions.length];
+		for(int i = 0; i < directions.length; i++) {
+			SpriteIdentifier id = new SpriteIdentifier(PlayerScreenHandler.BLOCK_ATLAS_TEXTURE, ReFramed.id("reframed_special/" + directions[i].getName()));
+			sprites[i] = Objects.requireNonNull(spriteLookup.apply(id), () -> "Couldn't find sprite " + id + " !");
 		}
 
-		BakedModel model = baker.bake(parent, modelBakeSettings);
-
 		return new RetexturingBakedModel(
-			model,
+			baker.bake(parent, bake_settings),
 			ReFramedClient.HELPER.getCamoApperanceManager(spriteLookup),
-			modelBakeSettings,
-			itemModelState,
+			theme_index,
+			bake_settings,
+			item_state,
 			ao
 		) {
-			final ConcurrentMap<BlockState, Mesh> jsonToMesh = new ConcurrentHashMap<>();
-			
-			@Override
-			protected Mesh getBaseMesh(BlockState state) {
-				//Convert models to re-texturable Meshes lazily, the first time we encounter each blockstate
-				return jsonToMesh.computeIfAbsent(state, this::convertModel);
-			}
-			
-			private Mesh convertModel(BlockState state) {
+			protected Mesh convertModel(BlockState state) {
 				Renderer r = ReFramedClient.HELPER.getFabricRenderer();
 				MeshBuilder builder = r.meshBuilder();
 				QuadEmitter emitter = builder.getEmitter();
-				RenderMaterial mat = tam.getCachedMaterial(state, false);
+				RenderMaterial mat = appearance_manager.getCachedMaterial(state, false);
 				
 				Random rand = Random.create(42);
 
@@ -84,9 +60,9 @@ public class UnbakedJsonRetexturedModel implements UnbakedModel {
 						emitter.fromVanilla(quad, mat, cullFace);
 						
 						QuadUvBounds bounds = QuadUvBounds.read(emitter);
-						for(int i = 0; i < specialSprites.length; i++) {
-							if(bounds.displaysSprite(specialSprites[i])) {
-								bounds.normalizeUv(emitter, specialSprites[i]);
+						for(int i = 0; i < sprites.length; i++) {
+							if(bounds.displaysSprite(sprites[i])) {
+								bounds.normalizeUv(emitter, sprites[i]);
 								emitter.tag(i + 1);
 								break;
 							}

src/main/java/fr/adrien1106/reframed/client/model/UnbakedRetexturedModel.java

@@ -0,0 +1,36 @@
+package fr.adrien1106.reframed.client.model;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.client.render.model.UnbakedModel;
+import net.minecraft.util.Identifier;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.function.Function;
+
+public abstract class UnbakedRetexturedModel implements UnbakedModel {
+
+    protected final Identifier parent;
+
+    protected int theme_index = 1;
+    protected BlockState item_state;
+    protected final boolean ao = true;
+
+    public UnbakedRetexturedModel(Identifier parent) {
+        this.parent = parent;
+    }
+
+    public void setThemeIndex(int theme_index) {
+        this.theme_index = theme_index;
+    }
+
+    @Override
+    public Collection<Identifier> getModelDependencies() {
+        return List.of(parent);
+    }
+
+    @Override
+    public void setParents(Function<Identifier, UnbakedModel> function) {
+        function.apply(parent).setParents(function);
+    }
+}

src/main/java/fr/adrien1106/reframed/client/model/apperance/CamoAppearance.java

@@ -1,13 +1,80 @@
 package fr.adrien1106.reframed.client.model.apperance;
 
+import fr.adrien1106.reframed.client.model.QuadPosBounds;
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
 import net.fabricmc.fabric.api.renderer.v1.material.RenderMaterial;
+import net.fabricmc.fabric.api.renderer.v1.mesh.MutableQuadView;
+import net.fabricmc.fabric.api.renderer.v1.mesh.QuadEmitter;
 import net.minecraft.util.math.Direction;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
 
-public interface CamoAppearance {
-	@NotNull RenderMaterial getRenderMaterial(boolean ao);
-	@NotNull List<SpriteProperties> getSprites(Direction dir, long seed);
-	boolean hasColor(Direction dir, long seed, int index);
+@Environment(EnvType.CLIENT)
+public abstract class CamoAppearance {
+	protected final int id;
+	protected final RenderMaterial ao_material;
+	protected final RenderMaterial material;
+
+	protected CamoAppearance(RenderMaterial ao_material, RenderMaterial material, int id) {
+		this.id = id;
+
+		this.ao_material = ao_material;
+		this.material = material;
+	}
+
+	public abstract @NotNull List<SpriteProperties> getSprites(Direction dir, int model_id);
+	public abstract boolean hasColor(Direction dir, int model_id, int index);
+
+	public @NotNull RenderMaterial getRenderMaterial(boolean ao) {
+		return ao && ao_material != null? ao_material : material;
+	}
+
+	public int transformQuad(QuadEmitter quad, int i, int quad_index, int model_id, boolean ao, boolean uv_lock) {
+		if(quad.tag() == 0) return 0; // Pass the quad through unmodified.
+
+		Direction direction = quad.nominalFace();
+		List<SpriteProperties> sprites = getSprites(direction, model_id);
+		if (i == -1) i = sprites.size();
+
+		SpriteProperties properties = sprites.get(sprites.size() - i);
+		int tag = i + (quad_index << 8);
+		i--;
+		QuadPosBounds bounds = properties.bounds();
+
+		if (bounds == null) { // sprite applies anywhere e.g. default behaviour
+			quad.material(getRenderMaterial(ao));
+			quad.spriteBake(
+				properties.sprite(),
+				MutableQuadView.BAKE_NORMALIZED
+					| properties.flags()
+					| (uv_lock ? MutableQuadView.BAKE_LOCK_UV : 0)
+			);
+			quad.tag(tag);
+			quad.emit();
+			return i;
+		}
+
+		// verify if sprite covers the current quad and apply the new size
+		QuadPosBounds origin_bounds = QuadPosBounds.read(quad, false);
+		if (!bounds.matches(origin_bounds)) return i;
+
+		// apply new quad shape
+		quad.material(getRenderMaterial(ao));
+		bounds.intersection(origin_bounds, direction.getAxis()).apply(quad, origin_bounds);
+		quad.spriteBake( // seems to work without the flags and break with it
+			properties.sprite(),
+			MutableQuadView.BAKE_NORMALIZED
+				| MutableQuadView.BAKE_LOCK_UV
+		);
+		quad.tag(tag);
+		quad.emit();
+		return i;
+	}
+
+	@Override
+	public int hashCode() {
+		return id;
+	}
 }

src/main/java/fr/adrien1106/reframed/client/model/apperance/CamoAppearanceManager.java

@@ -1,10 +1,14 @@
 package fr.adrien1106.reframed.client.model.apperance;
 
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
 import fr.adrien1106.reframed.ReFramed;
 import fr.adrien1106.reframed.client.ReFramedClient;
 import fr.adrien1106.reframed.client.model.DynamicBakedModel;
 import fr.adrien1106.reframed.client.model.QuadPosBounds;
 import fr.adrien1106.reframed.mixin.model.WeightedBakedModelAccessor;
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
 import net.fabricmc.fabric.api.renderer.v1.Renderer;
 import net.fabricmc.fabric.api.renderer.v1.material.BlendMode;
 import net.fabricmc.fabric.api.renderer.v1.material.MaterialFinder;
@@ -29,10 +33,10 @@ import net.minecraft.util.math.random.Random;
 import net.minecraft.world.BlockRenderView;
 
 import java.util.*;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Function;
 
+@Environment(EnvType.CLIENT)
 public class CamoAppearanceManager {
 
 	public CamoAppearanceManager(Function<SpriteIdentifier, Sprite> spriteLookup) {
@@ -40,47 +44,64 @@ public class CamoAppearanceManager {
 		for(BlendMode blend : BlendMode.values()) {
 			finder.clear().disableDiffuse(false).blendMode(blend);
 			
-			materialsWithoutAo.put(blend, finder.ambientOcclusion(TriState.FALSE).find());
-			materialsWithAo.put(blend, finder.ambientOcclusion(TriState.DEFAULT).find()); //not "true" since that *forces* AO, i just want to *allow* AO
+			materials.put(blend, finder.ambientOcclusion(TriState.FALSE).find());
+			ao_materials.put(blend, finder.ambientOcclusion(TriState.DEFAULT).find()); //not "true" since that *forces* AO, i just want to *allow* AO
 		}
 		
-		Sprite defaultSprite = spriteLookup.apply(DEFAULT_SPRITE_ID);
-		if(defaultSprite == null) throw new IllegalStateException("Couldn't locate " + DEFAULT_SPRITE_ID + " !");
-		this.defaultAppearance = new SingleSpriteAppearance(defaultSprite, materialsWithoutAo.get(BlendMode.CUTOUT), serialNumber.getAndIncrement());
+		Sprite sprite = spriteLookup.apply(DEFAULT_SPRITE_MAIN);
+		if(sprite == null) throw new IllegalStateException("Couldn't locate " + DEFAULT_SPRITE_MAIN + " !");
+		this.default_appearance = new SingleSpriteAppearance(sprite, materials.get(BlendMode.CUTOUT), serial_number.getAndIncrement());
 
-		Sprite barrier = spriteLookup.apply(BARRIER_SPRITE_ID);
-		if(barrier == null) barrier = defaultSprite; //eh
-		this.barrierItemAppearance = new SingleSpriteAppearance(barrier, materialsWithoutAo.get(BlendMode.CUTOUT), serialNumber.getAndIncrement());
+		sprite = spriteLookup.apply(DEFAULT_SPRITE_SECONDARY);
+		if(sprite == null) throw new IllegalStateException("Couldn't locate " + DEFAULT_SPRITE_MAIN + " !");
+		this.accent_appearance = new SingleSpriteAppearance(sprite, materials.get(BlendMode.CUTOUT), serial_number.getAndIncrement());
+
+		sprite = spriteLookup.apply(BARRIER_SPRITE_ID);
+		this.barrierItemAppearance = new SingleSpriteAppearance(sprite, materials.get(BlendMode.CUTOUT), serial_number.getAndIncrement());
 	}
 
-	protected static final SpriteIdentifier DEFAULT_SPRITE_ID = new SpriteIdentifier(PlayerScreenHandler.BLOCK_ATLAS_TEXTURE, new Identifier(ReFramed.MODID, "block/framed_block"));
+	protected static final SpriteIdentifier DEFAULT_SPRITE_MAIN = new SpriteIdentifier(PlayerScreenHandler.BLOCK_ATLAS_TEXTURE, new Identifier(ReFramed.MODID, "block/framed_block"));
+	protected static final SpriteIdentifier DEFAULT_SPRITE_SECONDARY = new SpriteIdentifier(PlayerScreenHandler.BLOCK_ATLAS_TEXTURE, new Identifier(ReFramed.MODID, "block/framed_accent_block"));
 	private static final SpriteIdentifier BARRIER_SPRITE_ID = new SpriteIdentifier(PlayerScreenHandler.BLOCK_ATLAS_TEXTURE, new Identifier("minecraft:item/barrier"));
 	
-	private final CamoAppearance defaultAppearance;
+	private final CamoAppearance default_appearance;
+	private final CamoAppearance accent_appearance;
 	private final CamoAppearance barrierItemAppearance;
 
-	private final ConcurrentHashMap<BlockState, CamoAppearance> appearanceCache = new ConcurrentHashMap<>(); //Mutable, append-only cache
-	private final AtomicInteger serialNumber = new AtomicInteger(0); //Mutable
+	private static final Cache<BlockState, CamoAppearance> APPEARANCE_CACHE = CacheBuilder.newBuilder().maximumSize(2048).build();
 
-	private final EnumMap<BlendMode, RenderMaterial> materialsWithAo = new EnumMap<>(BlendMode.class);
-	private final EnumMap<BlendMode, RenderMaterial> materialsWithoutAo = new EnumMap<>(BlendMode.class); //Immutable contents
+	private final AtomicInteger serial_number = new AtomicInteger(0); //Mutable
 	
-	public CamoAppearance getDefaultAppearance() {
-		return defaultAppearance;
+	private final EnumMap<BlendMode, RenderMaterial> ao_materials = new EnumMap<>(BlendMode.class);
+	private final EnumMap<BlendMode, RenderMaterial> materials = new EnumMap<>(BlendMode.class); //Immutable contents
+	
+	public CamoAppearance getDefaultAppearance(int appearance) {
+		return appearance == 2 ? accent_appearance: default_appearance;
 	}
 	
-	public CamoAppearance getCamoAppearance(BlockRenderView world, BlockState state, BlockPos pos) {
+	public CamoAppearance getCamoAppearance(BlockRenderView world, BlockState state, BlockPos pos, int theme_index, boolean item) {
 		BakedModel model = MinecraftClient.getInstance().getBlockRenderManager().getModel(state);
 
 		// add support for connected textures and more generally any compatible models injected so that they return baked quads
 		if (model instanceof DynamicBakedModel dynamic_model) {
-			return computeAppearance(dynamic_model.computeQuads(world, state, pos), state);
+			// cache items as they get rendered more often
+			if (item && APPEARANCE_CACHE.asMap().containsKey(state)) return APPEARANCE_CACHE.getIfPresent(state);
+
+			CamoAppearance appearance = computeAppearance(dynamic_model.computeQuads(world, state, pos, theme_index), state);
+			if (item) APPEARANCE_CACHE.put(state, appearance);
+			return appearance;
 		}
-		return appearanceCache.computeIfAbsent(state, block_state -> computeAppearance(model, block_state));
+
+		// refresh cache
+		if (APPEARANCE_CACHE.asMap().containsKey(state)) return APPEARANCE_CACHE.getIfPresent(state);
+
+		CamoAppearance appearance = computeAppearance(model, state);
+		APPEARANCE_CACHE.put(state, appearance);
+		return appearance;
 	}
 	
 	public RenderMaterial getCachedMaterial(BlockState state, boolean ao) {
-		Map<BlendMode, RenderMaterial> m = ao ? materialsWithAo : materialsWithoutAo;
+		Map<BlendMode, RenderMaterial> m = ao ? ao_materials : materials;
 		return m.get(BlendMode.fromRenderLayer(RenderLayers.getBlockLayer(state)));
 	}
 	
@@ -96,7 +117,7 @@ public class CamoAppearanceManager {
 				getAppearance(model),
 				getCachedMaterial(state, true),
 				getCachedMaterial(state, false),
-				serialNumber.getAndIncrement()
+				serial_number.getAndIncrement()
 			);
 		}
 		List<Weighted.Present<Appearance>> appearances = weighted_model.getModels().stream()
@@ -107,7 +128,7 @@ public class CamoAppearanceManager {
 			appearances,
 			getCachedMaterial(state, true),
 			getCachedMaterial(state, false),
-			serialNumber.getAndIncrement()
+			serial_number.getAndIncrement()
 		);
 	}
 
@@ -124,7 +145,7 @@ public class CamoAppearanceManager {
 		Arrays.stream(Direction.values()).forEach(direction -> {
 			List<BakedQuad> quads = model.getQuads(null, direction, random);
 			if(quads.isEmpty()) { // add default appearance if none present
-				sprites.put(direction, defaultAppearance.getSprites(direction, 0));
+				sprites.put(direction, default_appearance.getSprites(direction, 0));
 				return;
 			}
 

src/main/java/fr/adrien1106/reframed/client/model/apperance/ComputedAppearance.java

@@ -1,38 +1,30 @@
 package fr.adrien1106.reframed.client.model.apperance;
 
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
 import net.fabricmc.fabric.api.renderer.v1.material.RenderMaterial;
 import net.minecraft.util.math.Direction;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
 
-public class ComputedAppearance implements CamoAppearance {
+@Environment(EnvType.CLIENT)
+public class ComputedAppearance extends CamoAppearance {
     private final Appearance appearance;
-    private final int id;
-    private final RenderMaterial matWithAo;
-    private final RenderMaterial matWithoutAo;
 
-    public ComputedAppearance(@NotNull Appearance appearance, RenderMaterial withAo, RenderMaterial withoutAo, int id) {
+    public ComputedAppearance(@NotNull Appearance appearance, RenderMaterial ao_material, RenderMaterial material, int id) {
+        super(ao_material, material, id);
         this.appearance = appearance;
-        this.id = id;
-
-        this.matWithAo = withAo;
-        this.matWithoutAo = withoutAo;
     }
 
     @Override
-    public @NotNull RenderMaterial getRenderMaterial(boolean ao) {
-        return ao ? matWithAo : matWithoutAo;
-    }
-
-    @Override
-    public @NotNull List<SpriteProperties> getSprites(Direction dir, long seed) {
+    public @NotNull List<SpriteProperties> getSprites(Direction dir, int model_id) {
         return appearance.sprites().get(dir);
     }
 
     @Override
-    public boolean hasColor(Direction dir, long seed, int index) {
-        List<SpriteProperties> properties = getSprites(dir, seed);
+    public boolean hasColor(Direction dir, int model_id, int index) {
+        List<SpriteProperties> properties = getSprites(dir, model_id);
         if (index != 0) index = properties.size() - index;
         return properties.get(index).has_colors();
     }
@@ -40,13 +32,7 @@ public class ComputedAppearance implements CamoAppearance {
     @Override
     public boolean equals(Object o) {
         if(this == o) return true;
-        if(o == null || getClass() != o.getClass()) return false;
-        ComputedAppearance that = (ComputedAppearance) o;
+        if(!(o instanceof ComputedAppearance that)) return false;
         return id == that.id;
     }
-
-    @Override
-    public int hashCode() {
-        return id;
-    }
 }

src/main/java/fr/adrien1106/reframed/client/model/apperance/SingleSpriteAppearance.java

@@ -1,5 +1,7 @@
 package fr.adrien1106.reframed.client.model.apperance;
 
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
 import net.fabricmc.fabric.api.renderer.v1.material.RenderMaterial;
 import net.minecraft.client.texture.Sprite;
 import net.minecraft.util.math.Direction;
@@ -7,47 +9,34 @@ import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
 
-public class SingleSpriteAppearance implements CamoAppearance {
+@Environment(EnvType.CLIENT)
+public class SingleSpriteAppearance extends CamoAppearance {
     private final @NotNull Sprite defaultSprite;
-    private final RenderMaterial mat;
-    private final int id;
 
     public SingleSpriteAppearance(@NotNull Sprite defaultSprite, RenderMaterial mat, int id) {
+        super(null, mat, id);
         this.defaultSprite = defaultSprite;
-        this.mat = mat;
-        this.id = id;
     }
 
     @Override
-    public @NotNull RenderMaterial getRenderMaterial(boolean ao) {
-        return mat;
-    }
-
-    @Override
-    public @NotNull List<SpriteProperties> getSprites(Direction dir, long seed) {
+    public @NotNull List<SpriteProperties> getSprites(Direction dir, int model_id) {
         return List.of(new SpriteProperties(defaultSprite, 0, null, false));
     }
 
     @Override
-    public boolean hasColor(Direction dir, long seed, int index) {
+    public boolean hasColor(Direction dir, int model_id, int index) {
         return false;
     }
 
     @Override
     public boolean equals(Object o) {
         if(this == o) return true;
-        if(o == null || getClass() != o.getClass()) return false;
-        SingleSpriteAppearance that = (SingleSpriteAppearance) o;
+        if(!(o instanceof SingleSpriteAppearance that)) return false;
         return id == that.id;
     }
 
-    @Override
-    public int hashCode() {
-        return id;
-    }
-
     @Override
     public String toString() {
-        return "SingleSpriteAppearance[defaultSprite=%s, mat=%s, id=%d]".formatted(defaultSprite, mat, id);
+        return "SingleSpriteAppearance[defaultSprite=%s, mat=%s, id=%d]".formatted(defaultSprite, material, id);
     }
 }

src/main/java/fr/adrien1106/reframed/client/model/apperance/WeightedComputedAppearance.java

@@ -1,5 +1,7 @@
 package fr.adrien1106.reframed.client.model.apperance;
 
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
 import net.fabricmc.fabric.api.renderer.v1.material.RenderMaterial;
 import net.minecraft.util.collection.Weighted;
 import net.minecraft.util.collection.Weighting;
@@ -9,25 +11,15 @@ import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
 
-public class WeightedComputedAppearance implements CamoAppearance {
+@Environment(EnvType.CLIENT)
+public class WeightedComputedAppearance extends CamoAppearance {
     private final List<Weighted.Present<Appearance>> appearances;
     private final int total_weight;
-    private final int id;
-    private final RenderMaterial matWithAo;
-    private final RenderMaterial matWithoutAo;
 
-    public WeightedComputedAppearance(@NotNull List<Weighted.Present<Appearance>> appearances, RenderMaterial withAo, RenderMaterial withoutAo, int id) {
+    public WeightedComputedAppearance(@NotNull List<Weighted.Present<Appearance>> appearances, RenderMaterial ao_material, RenderMaterial material, int id) {
+        super(ao_material, material, id);
         this.appearances = appearances;
         this.total_weight = Weighting.getWeightSum(appearances);
-        this.id = id;
-
-        this.matWithAo = withAo;
-        this.matWithoutAo = withoutAo;
-    }
-
-    @Override
-    public @NotNull RenderMaterial getRenderMaterial(boolean ao) {
-        return ao ? matWithAo : matWithoutAo;
     }
 
 
@@ -37,21 +29,19 @@ public class WeightedComputedAppearance implements CamoAppearance {
             .map(appearances::indexOf).orElse(0);
     }
 
-    private Appearance getAppearance(long seed) {
-        Random random = Random.create(seed);
-        return Weighting.getAt(appearances, Math.abs((int)random.nextLong()) % total_weight)
-            .map(Weighted.Present::getData).get();
+    private Appearance getAppearance(int model_id) {
+        return appearances.get(model_id).getData();
     }
 
     @Override
-    public @NotNull List<SpriteProperties> getSprites(Direction dir, long seed) {
-        return getAppearance(seed).sprites().get(dir);
+    public @NotNull List<SpriteProperties> getSprites(Direction dir, int model_id) {
+        return getAppearance(model_id).sprites().get(dir);
     }
 
 
     @Override
-    public boolean hasColor(Direction dir, long seed, int index) {
-        List<SpriteProperties> properties = getSprites(dir, seed);
+    public boolean hasColor(Direction dir, int model_id, int index) {
+        List<SpriteProperties> properties = getSprites(dir, model_id);
         if (index != 0) index = properties.size() - index;
         return properties.get(index).has_colors();
     }
@@ -59,13 +49,7 @@ public class WeightedComputedAppearance implements CamoAppearance {
     @Override
     public boolean equals(Object o) {
         if(this == o) return true;
-        if(o == null || getClass() != o.getClass()) return false;
-        WeightedComputedAppearance that = (WeightedComputedAppearance) o;
+        if(!(o instanceof WeightedComputedAppearance that)) return false;
         return id == that.id;
     }
-
-    @Override
-    public int hashCode() {
-        return id;
-    }
 }

src/main/java/fr/adrien1106/reframed/generator/BlockStateProvider.java

@@ -0,0 +1,7 @@
+package fr.adrien1106.reframed.generator;
+
+import net.minecraft.data.client.BlockStateSupplier;
+
+public interface BlockStateProvider {
+    BlockStateSupplier getMultipart();
+}

src/main/java/fr/adrien1106/reframed/generator/GAdvancement.java

@@ -0,0 +1,44 @@
+package fr.adrien1106.reframed.generator;
+
+import fr.adrien1106.reframed.ReFramed;
+import net.fabricmc.fabric.api.datagen.v1.FabricDataOutput;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricAdvancementProvider;
+import net.minecraft.advancement.Advancement;
+import net.minecraft.advancement.AdvancementEntry;
+import net.minecraft.advancement.AdvancementFrame;
+import net.minecraft.advancement.AdvancementRewards;
+import net.minecraft.advancement.criterion.InventoryChangedCriterion;
+import net.minecraft.item.Items;
+import net.minecraft.registry.Registries;
+import net.minecraft.text.Text;
+import net.minecraft.util.Identifier;
+
+import java.util.function.Consumer;
+
+public class GAdvancement extends FabricAdvancementProvider {
+    protected GAdvancement(FabricDataOutput output) {
+        super(output);
+    }
+
+    @Override
+    public void generateAdvancement(Consumer<AdvancementEntry> consumer) {
+        Advancement.Builder builder = Advancement.Builder.create()
+            .display(
+                Items.CAKE,
+                Text.literal("Is Everything A Lie ?"),
+                Text.translatable("advancements.reframed.description"),
+                new Identifier("textures/gui/advancements/backgrounds/adventure.png"),
+                AdvancementFrame.TASK,
+                true,
+                true,
+                false
+            ).rewards(AdvancementRewards.Builder.experience(1000));
+        ReFramed.BLOCKS.forEach(block ->
+            builder.criterion(
+                "get_" + Registries.BLOCK.getId(block).getPath(),
+                InventoryChangedCriterion.Conditions.items(block)
+            )
+        );
+        builder.build(consumer, ReFramed.MODID + "/root");
+    }
+}

src/main/java/fr/adrien1106/reframed/generator/GBlockLoot.java

@@ -1,5 +1,6 @@
 package fr.adrien1106.reframed.generator;
 
+import fr.adrien1106.reframed.ReFramed;
 import net.fabricmc.fabric.api.datagen.v1.FabricDataOutput;
 import net.fabricmc.fabric.api.datagen.v1.provider.FabricBlockLootTableProvider;
 import net.minecraft.registry.Registries;
@@ -12,6 +13,6 @@ public class GBlockLoot extends FabricBlockLootTableProvider {
 
     @Override
     public void generate() {
-        Generator.BLOCKS.forEach(block -> addDrop(block, Registries.ITEM.get(Registries.BLOCK.getId(block))));
+        ReFramed.BLOCKS.forEach(block -> addDrop(block, Registries.ITEM.get(Registries.BLOCK.getId(block))));
     }
 }

src/main/java/fr/adrien1106/reframed/generator/GBlockTag.java

@@ -0,0 +1,22 @@
+package fr.adrien1106.reframed.generator;
+
+import fr.adrien1106.reframed.ReFramed;
+import net.fabricmc.fabric.api.datagen.v1.FabricDataOutput;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricTagProvider.BlockTagProvider;
+import net.minecraft.registry.RegistryWrapper.WrapperLookup;
+import net.minecraft.registry.tag.BlockTags;
+
+import java.util.concurrent.CompletableFuture;
+
+public class GBlockTag extends BlockTagProvider {
+
+    public GBlockTag(FabricDataOutput output, CompletableFuture<WrapperLookup> registries) {
+        super(output, registries);
+    }
+
+    @Override
+    protected void configure(WrapperLookup arg) {
+        FabricTagBuilder builder = getOrCreateTagBuilder(BlockTags.AXE_MINEABLE);
+        ReFramed.BLOCKS.forEach(builder::add);
+    }
+}

src/main/java/fr/adrien1106/reframed/generator/GBlockstate.java

@@ -1,5 +1,6 @@
 package fr.adrien1106.reframed.generator;
 
+import fr.adrien1106.reframed.ReFramed;
 import net.fabricmc.fabric.api.datagen.v1.FabricDataOutput;
 import net.fabricmc.fabric.api.datagen.v1.provider.FabricModelProvider;
 import net.minecraft.data.client.*;
@@ -8,6 +9,8 @@ import net.minecraft.util.Identifier;
 
 import java.util.Objects;
 
+import static net.minecraft.data.client.VariantSettings.Rotation.R0;
+
 public class GBlockstate extends FabricModelProvider {
 
     public GBlockstate(FabricDataOutput output) {
@@ -16,10 +19,20 @@ public class GBlockstate extends FabricModelProvider {
 
     @Override
     public void generateBlockStateModels(BlockStateModelGenerator model_generator) {
-        Generator.BLOCKS
+        ReFramed.BLOCKS
             .forEach(model_generator::excludeFromSimpleItemModelGeneration);
-        Generator.BLOCKS.stream()
-            .map(block -> block instanceof MultipartBlockStateProvider multipart_block ? multipart_block.getMultipart(): null)
+        ReFramed.BLOCKS.stream()
+            .map(block -> {
+                if (block instanceof BlockStateProvider multipart_block) return multipart_block.getMultipart();
+                return VariantsBlockStateSupplier.create(
+                    block,
+                    GBlockstate.variant(
+                        ReFramed.id("cube_special"),
+                        true,
+                        R0, R0
+                    )
+                );
+            })
             .filter(Objects::nonNull)
             .forEach(model_generator.blockStateCollector);
     }
@@ -30,8 +43,8 @@ public class GBlockstate extends FabricModelProvider {
     public static BlockStateVariant variant(Identifier model, boolean uv_lock, VariantSettings.Rotation x, VariantSettings.Rotation y) {
         BlockStateVariant variant = BlockStateVariant.create().put(VariantSettings.MODEL, model);
         if (uv_lock) variant.put(VariantSettings.UVLOCK, uv_lock);
-        if (!x.equals(VariantSettings.Rotation.R0)) variant.put(VariantSettings.X, x);
-        if (!y.equals(VariantSettings.Rotation.R0)) variant.put(VariantSettings.Y, y);
+        if (!x.equals(R0)) variant.put(VariantSettings.X, x);
+        if (!y.equals(R0)) variant.put(VariantSettings.Y, y);
         return variant;
     }
 

src/main/java/fr/adrien1106/reframed/generator/GLanguage.java

@@ -0,0 +1,28 @@
+package fr.adrien1106.reframed.generator;
+
+import fr.adrien1106.reframed.ReFramed;
+import net.fabricmc.fabric.api.datagen.v1.FabricDataOutput;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricLanguageProvider;
+import net.minecraft.registry.Registries;
+
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
+public class GLanguage extends FabricLanguageProvider {
+    protected GLanguage(FabricDataOutput dataOutput) {
+        super(dataOutput, "en_us");
+    }
+
+    @Override
+    public void generateTranslations(TranslationBuilder builder) {
+        builder.add(Registries.ITEM_GROUP.getKey(ReFramed.ITEM_GROUP).get(), "Frames");
+        builder.add("advancements.reframed.description", "Get all the frame types.");
+        ReFramed.BLOCKS.forEach(block -> builder.add(block, beautify(Registries.BLOCK.getId(block).getPath()) + " Frame"));
+    }
+
+    private static String beautify(String name) {
+        return Arrays.stream(name.split("_"))
+            .map(word -> word.substring(0, 1).toUpperCase() + word.substring(1))
+            .collect(Collectors.joining(" "));
+    }
+}

src/main/java/fr/adrien1106/reframed/generator/GRecipe.java

@@ -0,0 +1,19 @@
+package fr.adrien1106.reframed.generator;
+
+import fr.adrien1106.reframed.ReFramed;
+import net.fabricmc.fabric.api.datagen.v1.FabricDataOutput;
+import net.fabricmc.fabric.api.datagen.v1.provider.FabricRecipeProvider;
+import net.minecraft.data.server.recipe.RecipeExporter;
+
+public class GRecipe extends FabricRecipeProvider {
+    public GRecipe(FabricDataOutput output) {
+        super(output);
+    }
+
+    @Override
+    public void generate(RecipeExporter exporter) {
+        ReFramed.BLOCKS.forEach(block -> {
+            if (block instanceof RecipeSetter provider) provider.setRecipe(exporter);
+        });
+    }
+}

src/main/java/fr/adrien1106/reframed/generator/Generator.java

@@ -2,22 +2,17 @@ package fr.adrien1106.reframed.generator;
 
 import net.fabricmc.fabric.api.datagen.v1.DataGeneratorEntrypoint;
 import net.fabricmc.fabric.api.datagen.v1.FabricDataGenerator;
-import net.minecraft.block.Block;
-
-import java.util.List;
-
-import static fr.adrien1106.reframed.ReFramed.*;
 
 public class Generator implements DataGeneratorEntrypoint {
 
-    /**
-     *  missing DOOR, IRON_DOOR, CANDLE
-     */
-    public static List<Block> BLOCKS = List.of(CUBE, STAIRS, SLAB, POST, FENCE, FENCE_GATE, TRAPDOOR, IRON_TRAPDOOR, PRESSURE_PLATE, BUTTON, LEVER, WALL, CARPET, PANE);
     @Override
     public void onInitializeDataGenerator(FabricDataGenerator data_generator) {
-        FabricDataGenerator.Pack myPack = data_generator.createPack();
-        myPack.addProvider(GBlockLoot::new);
-        myPack.addProvider(GBlockstate::new);
+        FabricDataGenerator.Pack my_pack = data_generator.createPack();
+        my_pack.addProvider(GBlockLoot::new);
+        my_pack.addProvider(GBlockstate::new);
+        my_pack.addProvider(GLanguage::new);
+        my_pack.addProvider(GBlockTag::new);
+        my_pack.addProvider(GRecipe::new);
+        my_pack.addProvider(GAdvancement::new);
     }
 }

src/main/java/fr/adrien1106/reframed/generator/MultipartBlockStateProvider.java

@@ -1,7 +0,0 @@
-package fr.adrien1106.reframed.generator;
-
-import net.minecraft.data.client.MultipartBlockStateSupplier;
-
-public interface MultipartBlockStateProvider {
-    MultipartBlockStateSupplier getMultipart();
-}

src/main/java/fr/adrien1106/reframed/generator/RecipeSetter.java

@@ -0,0 +1,8 @@
+package fr.adrien1106.reframed.generator;
+
+import net.minecraft.data.server.recipe.RecipeExporter;
+
+public interface RecipeSetter {
+
+    void setRecipe(RecipeExporter exporter);
+}

src/main/java/fr/adrien1106/reframed/mixin/BlockItemMixin.java

@@ -0,0 +1,45 @@
+package fr.adrien1106.reframed.mixin;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import com.llamalad7.mixinextras.sugar.ref.LocalRef;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockEntityProvider;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.BlockItem;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NbtCompound;
+import net.minecraft.nbt.NbtHelper;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import static fr.adrien1106.reframed.block.ReFramedEntity.BLOCKSTATE_KEY;
+
+@Mixin(BlockItem.class)
+public class BlockItemMixin {
+
+    @Inject(
+        method = "writeNbtToBlockEntity",
+        at = @At(
+            value = "INVOKE_ASSIGN",
+            target = "Lnet/minecraft/item/BlockItem;getBlockEntityNbt(Lnet/minecraft/item/ItemStack;)Lnet/minecraft/nbt/NbtCompound;",
+            shift = At.Shift.AFTER
+        )
+    )
+    private static void placeBlockWithOffHandCamo(World world, PlayerEntity player, BlockPos pos, ItemStack stack, CallbackInfoReturnable<Boolean> cir, @Local LocalRef<NbtCompound> compound) {
+        if (compound.get() != null
+            || player.getOffHandStack().isEmpty()
+            || !(player.getOffHandStack().getItem() instanceof BlockItem block)
+            || block.getBlock() instanceof BlockEntityProvider
+            || !Block.isShapeFullCube(block.getBlock().getDefaultState().getCollisionShape(world, pos))
+        ) return;
+        NbtCompound new_comp = new NbtCompound();
+        player.getOffHandStack().decrement(1);
+        new_comp.put(BLOCKSTATE_KEY + 1, NbtHelper.fromBlockState(block.getBlock().getDefaultState()));
+        compound.set(new_comp);
+    }
+
+}

src/main/java/fr/adrien1106/reframed/mixin/BlockMixin.java

@@ -1,46 +0,0 @@
-package fr.adrien1106.reframed.mixin;
-
-import com.llamalad7.mixinextras.sugar.Local;
-import fr.adrien1106.reframed.block.ReFramedEntity;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.util.function.BooleanBiFunction;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.util.shape.VoxelShapes;
-import net.minecraft.world.BlockView;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.*;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
-
-@Mixin(Block.class)
-public class BlockMixin {
-
-    @Redirect(method = "shouldDrawSide", at = @At(value = "INVOKE", target = "Lnet/minecraft/block/BlockState;isOpaque()Z"))
-    private static boolean isNeighborCamoOpaque(BlockState state, @Local(argsOnly = true) BlockView world, @Local(ordinal = 1, argsOnly = true) BlockPos pos) {
-        BlockEntity block_entity = world.getBlockEntity(pos);
-        if (!(block_entity instanceof ReFramedEntity frame_entity)) return state.isOpaque();
-        return frame_entity.getThemeState().isOpaque();
-    }
-
-    @Redirect(method = "shouldDrawSide", at = @At(value = "INVOKE", target = "Lnet/minecraft/block/BlockState;isSideInvisible(Lnet/minecraft/block/BlockState;Lnet/minecraft/util/math/Direction;)Z"))
-    private static boolean isCamoInvisible(BlockState state, BlockState other_state, Direction direction, @Local(argsOnly = true) BlockView world, @Local(ordinal = 0, argsOnly = true) BlockPos pos, @Local(ordinal = 1, argsOnly = true) BlockPos other_pos) {
-        if (world.getBlockEntity(other_pos) instanceof ReFramedEntity entity) other_state = entity.getThemeState();
-        if (world.getBlockEntity(pos) instanceof ReFramedEntity entity) state = entity.getThemeState();
-        return state.isSideInvisible(other_state, direction);
-    }
-
-    @Inject(method = "shouldDrawSide", at = @At(value = "RETURN", ordinal = 0), cancellable = true)
-    private static void shouldDrawGlassCamoSide(BlockState state, BlockView world, BlockPos pos, Direction side, BlockPos other_pos, CallbackInfoReturnable<Boolean> cir, @Local(ordinal = 1) BlockState neighbor) {
-        if (!(world.getBlockEntity(pos) instanceof ReFramedEntity) && !(world.getBlockEntity(other_pos) instanceof ReFramedEntity)) return;
-        VoxelShape voxel_block = state.getCullingFace(world, pos, side);
-        if (voxel_block.isEmpty()) {
-            cir.setReturnValue(true);
-            return;
-        }
-        VoxelShape voxel_neighbor = neighbor.getCullingFace(world, pos, side.getOpposite());
-        cir.setReturnValue(VoxelShapes.matchesAnywhere(voxel_block, voxel_neighbor, BooleanBiFunction.ONLY_FIRST));
-    }
-}

src/main/java/fr/adrien1106/reframed/mixin/BlockRenderInfoMixin.java

@@ -1,49 +0,0 @@
-package fr.adrien1106.reframed.mixin;
-
-import com.llamalad7.mixinextras.sugar.Local;
-import fr.adrien1106.reframed.block.ReFramedEntity;
-import net.fabricmc.fabric.impl.client.indigo.renderer.render.BlockRenderInfo;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.entity.BlockEntity;
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.world.BlockRenderView;
-import org.spongepowered.asm.mixin.Final;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.Shadow;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.ModifyArg;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
-
-@Mixin(BlockRenderInfo.class)
-public abstract class BlockRenderInfoMixin {
-
-    @Shadow public BlockPos blockPos;
-
-    @Shadow public BlockState blockState;
-
-    @Shadow public BlockRenderView blockView;
-
-    @Shadow @Final private BlockPos.Mutable searchPos;
-
-    @ModifyArg(method = "prepareForBlock",
-        at = @At(value = "INVOKE", target = "Lnet/minecraft/client/render/RenderLayers;" +
-            "getBlockLayer(Lnet/minecraft/block/BlockState;)Lnet/minecraft/client/render/RenderLayer;"))
-    public BlockState prepareCamoLayer(BlockState state, @Local(argsOnly = true) BlockPos pos) {
-        BlockEntity block_entity = MinecraftClient.getInstance().world.getBlockEntity(pos);
-        if (!(block_entity instanceof ReFramedEntity frame_entity)) return state;
-        return frame_entity.getThemeState();
-    }
-
-    @Inject(method = "shouldDrawFace",
-        at = @At(value = "INVOKE_ASSIGN", target = "Lnet/minecraft/util/math/Direction;getId()I"),
-        cancellable = true)
-    private void shouldDrawCamoFace(Direction face, CallbackInfoReturnable<Boolean> cir) {
-        BlockEntity block_entity = MinecraftClient.getInstance().world.getBlockEntity(blockPos);
-        if (!(block_entity instanceof ReFramedEntity)) return;
-        cir.setReturnValue(Block.shouldDrawSide(blockState, blockView, blockPos, face, searchPos.set(blockPos, face)));
-    }
-}

src/main/java/fr/adrien1106/reframed/mixin/CompatMixinPlugin.java

@@ -2,6 +2,8 @@ package fr.adrien1106.reframed.mixin;
 
 import net.fabricmc.loader.api.FabricLoader;
 import org.objectweb.asm.tree.ClassNode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.spongepowered.asm.mixin.extensibility.IMixinConfigPlugin;
 import org.spongepowered.asm.mixin.extensibility.IMixinInfo;
 
@@ -12,9 +14,19 @@ import java.util.function.Supplier;
 
 public class CompatMixinPlugin implements IMixinConfigPlugin {
 
+    private static final FabricLoader LOADER = FabricLoader.getInstance();
+    private static final Logger LOGGER = LoggerFactory.getLogger("ReFramed MIXIN");
+    private static final List<String> COMPAT_MOD = List.of("athena", "indium", "sodium");
     private static final Map<String, Supplier<Boolean>> CONDITIONS = Map.of(
-        "fr.adrien1106.reframed.mixin.compat.AthenaBakedModelMixin", () -> FabricLoader.getInstance().isModLoaded("athena"),
-        "fr.adrien1106.reframed.mixin.compat.AthenaWrappedGetterMixin", () -> FabricLoader.getInstance().isModLoaded("athena")
+        "fr.adrien1106.reframed.mixin.compat.AthenaBakedModelMixin", () -> LOADER.isModLoaded(COMPAT_MOD.get(0)),
+        "fr.adrien1106.reframed.mixin.compat.AthenaWrappedGetterMixin", () -> LOADER.isModLoaded(COMPAT_MOD.get(0)),
+        "fr.adrien1106.reframed.mixin.render.TerrainRenderContextMixin", () -> !LOADER.isModLoaded(COMPAT_MOD.get(1)),
+        "fr.adrien1106.reframed.mixin.render.BlockRenderInfoMixin", () -> !LOADER.isModLoaded(COMPAT_MOD.get(1)),
+        "fr.adrien1106.reframed.mixin.render.AbstractBlockRenderContextMixin", () -> !LOADER.isModLoaded(COMPAT_MOD.get(1)),
+        "fr.adrien1106.reframed.mixin.compat.IndiumTerrainRenderContextMixin", () -> LOADER.isModLoaded(COMPAT_MOD.get(1)),
+        "fr.adrien1106.reframed.mixin.compat.IndiumTerrainBlockRenderInfoMixin", () -> LOADER.isModLoaded(COMPAT_MOD.get(1)),
+        "fr.adrien1106.reframed.mixin.compat.IndiumAbstractBlockRenderContextMixin", () -> LOADER.isModLoaded(COMPAT_MOD.get(1)),
+        "fr.adrien1106.reframed.mixin.compat.SodiumBlockOcclusionCacheMixin", () -> LOADER.isModLoaded(COMPAT_MOD.get(2))
     );
 
 
@@ -44,12 +56,16 @@ public class CompatMixinPlugin implements IMixinConfigPlugin {
     }
 
     @Override
-    public void preApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {
+    public void preApply(String target_class_name, ClassNode target_class, String mixin_class_name, IMixinInfo mixin_info) {
 
     }
 
     @Override
-    public void postApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {
-
+    public void postApply(String target_class, ClassNode target, String mixin_class, IMixinInfo mixin_info) {
+        String mixin_class_name = mixin_class.substring(mixin_class.lastIndexOf('.') + 1);
+        COMPAT_MOD.forEach(mod -> {
+            if (mixin_class_name.toLowerCase().startsWith(mod))
+                LOGGER.info("Loaded compatibility mixin class for mod \"" + mod + "\" (class: " + target_class + ")");
+        });
     }
 }

src/main/java/fr/adrien1106/reframed/mixin/compat/AthenaBakedModelMixin.java

@@ -6,6 +6,7 @@ import earth.terrarium.athena.api.client.models.AthenaBlockModel;
 import fr.adrien1106.reframed.client.ReFramedClient;
 import fr.adrien1106.reframed.client.model.DynamicBakedModel;
 import fr.adrien1106.reframed.compat.RebakedAthenaModel;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import net.fabricmc.fabric.api.renderer.v1.Renderer;
 import net.fabricmc.fabric.api.renderer.v1.mesh.MutableQuadView;
@@ -26,9 +27,9 @@ import java.util.*;
 @Mixin(AthenaBakedModel.class)
 public abstract class AthenaBakedModelMixin implements DynamicBakedModel, BakedModel {
 
-    @Shadow @Final private AthenaBlockModel model;
+    @Shadow(remap = false) @Final private AthenaBlockModel model;
 
-    @Shadow @Final private Int2ObjectMap<Sprite> textures;
+    @Shadow(remap = false) @Final private Int2ObjectMap<Sprite> textures;
 
     /**
      * Reuses the emitQuad method to compute the quads to be used by the frame
@@ -39,18 +40,23 @@ public abstract class AthenaBakedModelMixin implements DynamicBakedModel, BakedM
      * @return - the rebakedmodel containing the computed quads
      */
     @Override
-    public BakedModel computeQuads(BlockRenderView level, BlockState state, BlockPos pos) {
-        if (level == null || pos == null) return this;
-
+    public BakedModel computeQuads(BlockRenderView level, BlockState state, BlockPos pos, int theme_index) {
         Map<Direction, List<BakedQuad>> face_quads = new HashMap<>();
-
         Renderer r = ReFramedClient.HELPER.getFabricRenderer();
         QuadEmitter emitter = r.meshBuilder().getEmitter();
 
         WrappedGetter getter = new WrappedGetter(level);
         Arrays.stream(Direction.values()).forEach(direction -> {
             face_quads.put(direction, new ArrayList<>());
-            model.getQuads(getter, state, pos, direction).forEach(sprite -> face_quads.computeIfPresent(direction, (d, quads) -> {
+
+            (level == null || pos == null
+                ? model.getDefaultQuads(direction).get(direction)
+                : model.getQuads(
+                    getter,
+                    level.getBlockEntity(pos) instanceof ThemeableBlockEntity framed_entity
+                        ? framed_entity.getTheme(theme_index)
+                        : state, pos, direction)
+                ).forEach(sprite -> face_quads.computeIfPresent(direction, (d, quads) -> {
                     Sprite texture = textures.get(sprite.sprite());
                     if (texture == null) return quads;
                     emitter.square(direction, sprite.left(), sprite.bottom(), sprite.right(), sprite.top(), sprite.depth());

src/main/java/fr/adrien1106/reframed/mixin/compat/AthenaConnectedBlockModelMixin.java

@@ -3,7 +3,7 @@ package fr.adrien1106.reframed.mixin.compat;
 import earth.terrarium.athena.api.client.utils.AppearanceAndTintGetter;
 import earth.terrarium.athena.api.client.utils.CtmUtils;
 import earth.terrarium.athena.impl.client.models.ConnectedBlockModel;
-import fr.adrien1106.reframed.block.ReFramedEntity;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
 import net.minecraft.block.BlockState;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Direction;
@@ -22,8 +22,8 @@ public class AthenaConnectedBlockModelMixin {
             "Lnet/minecraft/util/math/Direction;)Z"))
     private boolean checkForCull(AppearanceAndTintGetter level, BlockState state, BlockPos pos, Direction direction) {
         // Always get all the textures unless its another block then use default behaviour
-        if (level.getBlockEntity(pos) instanceof ReFramedEntity
-            || level.getBlockEntity(pos.offset(direction)) instanceof ReFramedEntity)
+        if (level.getBlockEntity(pos) instanceof ThemeableBlockEntity
+            || level.getBlockEntity(pos.offset(direction)) instanceof ThemeableBlockEntity)
             return false;
         return CtmUtils.checkRelative(level, state, pos, direction);
     }

src/main/java/fr/adrien1106/reframed/mixin/compat/AthenaWrappedGetterMixin.java

@@ -1,45 +1,30 @@
 package fr.adrien1106.reframed.mixin.compat;
 
+import com.llamalad7.mixinextras.sugar.Local;
 import earth.terrarium.athena.api.client.fabric.WrappedGetter;
-import fr.adrien1106.reframed.block.ReFramedEntity;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
 import net.minecraft.block.BlockState;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.BlockRenderView;
-import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.Redirect;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 @Mixin(WrappedGetter.class)
 public class AthenaWrappedGetterMixin {
 
-    @Shadow @Final private BlockRenderView getter;
-
-    @Inject(method = "getBlockState", at = @At(value = "HEAD"), cancellable = true)
-    private void getCamoState(BlockPos pos, CallbackInfoReturnable<BlockState> cir) {
-        if (!(getter.getBlockEntity(pos) instanceof ReFramedEntity framed_entity)) return;
-        cir.setReturnValue(framed_entity.getThemeState());
-    }
-
-    @Redirect(method = "getAppearance(Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/util/math/Direction;)" +
-        "Lnet/minecraft/block/BlockState;",
-        at = @At(value = "INVOKE", target = "Lnet/minecraft/world/BlockRenderView;" +
-            "getBlockState(Lnet/minecraft/util/math/BlockPos;)" +
-            "Lnet/minecraft/block/BlockState;"))
-    private BlockState appearanceCamoState(BlockRenderView world, BlockPos pos) {
-        if (world.getBlockEntity(pos) instanceof ReFramedEntity framed_entity) return framed_entity.getThemeState();
-        return world.getBlockState(pos);
-    }
-
     @Redirect(method = "query",
         at = @At(value = "INVOKE", target = "Lnet/minecraft/world/BlockRenderView;" +
             "getBlockState(Lnet/minecraft/util/math/BlockPos;)" +
             "Lnet/minecraft/block/BlockState;"))
-    private BlockState queryCamoState(BlockRenderView world, BlockPos pos) {
-        if (world.getBlockEntity(pos) instanceof ReFramedEntity framed_entity) return framed_entity.getThemeState();
+    private BlockState queryCamoState(BlockRenderView world, BlockPos pos, @Local(argsOnly = true) BlockState reference_state) {
+        // get Any that will connect or return any other (/!\ isOf is an uncertain check)
+        if (world.getBlockEntity(pos) instanceof ThemeableBlockEntity framed_entity)
+            return framed_entity.getThemes()
+                .stream()
+                .filter(state -> reference_state.isOf(state.getBlock()))
+                .findAny()
+                .orElse(framed_entity.getTheme(1));
         return world.getBlockState(pos);
     }
 }

src/main/java/fr/adrien1106/reframed/mixin/compat/IndiumAbstractBlockRenderContextMixin.java

@@ -0,0 +1,29 @@
+package fr.adrien1106.reframed.mixin.compat;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.mixin.IBlockRenderInfoMixin;
+import link.infra.indium.renderer.mesh.MutableQuadViewImpl;
+import link.infra.indium.renderer.render.AbstractBlockRenderContext;
+import link.infra.indium.renderer.render.BlockRenderInfo;
+import net.minecraft.util.math.Direction;
+import org.jetbrains.annotations.Nullable;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(AbstractBlockRenderContext.class)
+public abstract class IndiumAbstractBlockRenderContextMixin {
+
+    @Shadow(remap = false) protected BlockRenderInfo blockInfo;
+
+    @Shadow public abstract boolean isFaceCulled(@Nullable Direction face);
+
+    @Redirect(method = "renderQuad", at = @At(value = "INVOKE", target = "Llink/infra/indium/renderer/render/AbstractBlockRenderContext;isFaceCulled(Lnet/minecraft/util/math/Direction;)Z"))
+    private boolean shouldDrawInnerQuad(AbstractBlockRenderContext instance, Direction face, @Local(argsOnly = true) MutableQuadViewImpl quad) {
+        if (face != null || quad.tag() == 0 || !(blockInfo instanceof IBlockRenderInfoMixin info) || info.getThemeIndex() == 0) return isFaceCulled(face);
+
+        return !BlockHelper.shouldDrawInnerFace(blockInfo.blockState, blockInfo.blockView, blockInfo.blockPos, quad.tag() >>> 8, info.getThemeIndex());
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/compat/IndiumTerrainBlockRenderInfoMixin.java

@@ -0,0 +1,48 @@
+package fr.adrien1106.reframed.mixin.compat;
+
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.mixin.IBlockRenderInfoMixin;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
+import link.infra.indium.renderer.render.BlockRenderInfo;
+import link.infra.indium.renderer.render.TerrainBlockRenderInfo;
+import me.jellysquid.mods.sodium.client.render.chunk.compile.pipeline.BlockOcclusionCache;
+import net.minecraft.block.BlockState;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.world.BlockView;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(TerrainBlockRenderInfo.class)
+public abstract class IndiumTerrainBlockRenderInfoMixin extends BlockRenderInfo implements IBlockRenderInfoMixin {
+
+    @Unique private int theme_index = 0;
+
+    @Redirect(
+        method = "shouldDrawFaceInner",
+        at = @At(
+            value = "INVOKE",
+            target = "Lme/jellysquid/mods/sodium/client/render/chunk/compile/pipeline/BlockOcclusionCache;shouldDrawSide(Lnet/minecraft/block/BlockState;Lnet/minecraft/world/BlockView;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/util/math/Direction;)Z"
+        )
+    )
+    private boolean shouldDrawCamoSide(BlockOcclusionCache instance, BlockState state, BlockView view, BlockPos pos, Direction face) {
+        BlockPos other_pos = pos.offset(face);
+        if (!(view.getBlockEntity(pos) instanceof ThemeableBlockEntity
+            || view.getBlockEntity(other_pos) instanceof ThemeableBlockEntity))
+                return instance.shouldDrawSide(state, view, pos, face);
+        return BlockHelper.shouldDrawSide(state, view, pos, face, other_pos, theme_index);
+    }
+
+    @Override
+    public void prepareForBlock(BlockState blockState, BlockPos blockPos, long seed, boolean modelAo, int theme_index) {
+        this.theme_index = theme_index;
+        prepareForBlock(blockState, blockPos, seed, modelAo);
+    }
+
+    @Override
+    public int getThemeIndex() {
+        return theme_index;
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/compat/IndiumTerrainRenderContextMixin.java

@@ -0,0 +1,45 @@
+package fr.adrien1106.reframed.mixin.compat;
+
+import fr.adrien1106.reframed.client.model.MultiRetexturableModel;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.mixin.IBlockRenderInfoMixin;
+import fr.adrien1106.reframed.util.mixin.IMultipartBakedModelMixin;
+import link.infra.indium.renderer.render.AbstractBlockRenderContext;
+import link.infra.indium.renderer.render.TerrainRenderContext;
+import me.jellysquid.mods.sodium.client.render.chunk.compile.pipeline.BlockRenderContext;
+import net.fabricmc.fabric.api.renderer.v1.model.ForwardingBakedModel;
+import net.minecraft.client.render.model.BakedModel;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import java.util.List;
+
+
+@Mixin(TerrainRenderContext.class)
+public abstract class IndiumTerrainRenderContextMixin extends AbstractBlockRenderContext {
+
+    @Inject(
+        method = "tessellateBlock",
+        at = @At(
+            value = "INVOKE",
+            target = "Llink/infra/indium/renderer/aocalc/AoCalculator;clear()V"
+        ), remap = false,
+        cancellable = true)
+    private void renderMultipleModels(BlockRenderContext ctx, CallbackInfo ci) {
+        if (!(ctx.model() instanceof IMultipartBakedModelMixin wrapped)
+            || !(wrapped.getModel(ctx.state()) instanceof MultiRetexturableModel retexturing_model)) return;
+
+        List<ForwardingBakedModel> models = retexturing_model.models();
+        BlockHelper.computeInnerCull(ctx.state(), models);
+        int i = 0;
+        for (BakedModel model : models) {
+            i++;
+            aoCalc.clear();
+            ((IBlockRenderInfoMixin) blockInfo).prepareForBlock(ctx.state(), ctx.pos(), ctx.seed(), model.useAmbientOcclusion(), i);
+            model.emitBlockQuads(blockInfo.blockView, blockInfo.blockState, blockInfo.blockPos, blockInfo.randomSupplier, this);
+        }
+        ci.cancel();
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/compat/SodiumBlockOcclusionCacheMixin.java

@@ -0,0 +1,30 @@
+package fr.adrien1106.reframed.mixin.compat;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
+import me.jellysquid.mods.sodium.client.render.chunk.compile.pipeline.BlockOcclusionCache;
+import net.minecraft.block.BlockState;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.world.BlockView;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(BlockOcclusionCache.class)
+public class SodiumBlockOcclusionCacheMixin {
+
+    @Inject(
+        method = "shouldDrawSide",
+        at = @At(
+            value = "INVOKE_ASSIGN",
+            target = "Lnet/minecraft/world/BlockView;getBlockState(Lnet/minecraft/util/math/BlockPos;)Lnet/minecraft/block/BlockState;",
+            shift = At.Shift.AFTER
+        ), cancellable = true)
+    private void shouldDrawFrameNeighborSide(BlockState self_state, BlockView view, BlockPos self_pos, Direction face, CallbackInfoReturnable<Boolean> cir, @Local BlockPos.Mutable other_pos) {
+        if (!(view.getBlockEntity(other_pos) instanceof ThemeableBlockEntity)) return;
+        cir.setReturnValue(BlockHelper.shouldDrawSide(self_state, view, self_pos, face, other_pos, 0));
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/particles/MixinBlockDustParticle.java

@@ -1,6 +1,7 @@
 package fr.adrien1106.reframed.mixin.particles;
 
-import fr.adrien1106.reframed.util.ThemeableBlockEntity;
+import fr.adrien1106.reframed.block.ReFramedBlock;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
 import net.minecraft.block.BlockState;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.particle.BlockDustParticle;
@@ -20,8 +21,11 @@ public class MixinBlockDustParticle {
 	)
 	void modifyParticleSprite(ClientWorld clientWorld, double d, double e, double f, double g, double h, double i, BlockState state, BlockPos pos, CallbackInfo ci) {
 		AccessorParticle a = (AccessorParticle) this;
-		if(a.getRandom().nextBoolean() && clientWorld.getBlockEntity(pos) instanceof ThemeableBlockEntity themeable) {
-			BlockState theme = themeable.getThemeState();
+		if(a.getRandom().nextBoolean()
+			&& clientWorld.getBlockEntity(pos) instanceof ThemeableBlockEntity themeable
+			&& state.getBlock() instanceof ReFramedBlock block
+		) {
+			BlockState theme = themeable.getTheme(block.getTopThemeIndex(state));
 			if(theme == null || theme.isAir()) return;
 			
 			Sprite replacement = MinecraftClient.getInstance().getBlockRenderManager().getModels().getModelParticleSprite(theme);

src/main/java/fr/adrien1106/reframed/mixin/particles/MixinEntity.java

@@ -1,31 +1,31 @@
 package fr.adrien1106.reframed.mixin.particles;
 
-import fr.adrien1106.reframed.util.ThemeableBlockEntity;
+import com.llamalad7.mixinextras.sugar.Local;
+import fr.adrien1106.reframed.block.ReFramedBlock;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
 import net.minecraft.block.BlockState;
 import net.minecraft.entity.Entity;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.ModifyArg;
 
 @Mixin(Entity.class)
 public abstract class MixinEntity {
-	@Shadow @Deprecated public abstract BlockPos getLandingPos(); //TODO, somewhat expensive method
-	
 	@ModifyArg(
 		method = "spawnSprintingParticles",
 		at = @At(value = "INVOKE", target = "Lnet/minecraft/particle/BlockStateParticleEffect;<init>(Lnet/minecraft/particle/ParticleType;Lnet/minecraft/block/BlockState;)V")
 	)
-	private BlockState modifyParticleState(BlockState origState) {
+	private BlockState modifyParticleState(BlockState state, @Local(ordinal = 0) BlockPos landing_pos) {
 		World world = ((Entity) (Object) this).getWorld();
 		
-		if(world.getBlockEntity(getLandingPos()) instanceof ThemeableBlockEntity themeable) {
-			BlockState theme = themeable.getThemeState();
+		if(world.getBlockEntity(landing_pos) instanceof ThemeableBlockEntity themeable
+			&& state.getBlock() instanceof ReFramedBlock block) {
+				BlockState theme = themeable.getTheme(block.getTopThemeIndex(state));
 				if(!theme.isAir()) return theme;
 		}
 		
-		return origState;
+		return state;
 	}
 }

src/main/java/fr/adrien1106/reframed/mixin/particles/MixinLivingEntity.java

@@ -1,39 +1,33 @@
 package fr.adrien1106.reframed.mixin.particles;
 
-import fr.adrien1106.reframed.util.ThemeableBlockEntity;
+import com.llamalad7.mixinextras.sugar.Local;
+import fr.adrien1106.reframed.block.ReFramedBlock;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
 import net.minecraft.block.BlockState;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.ModifyArg;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 @Mixin(LivingEntity.class)
 public class MixinLivingEntity {
-	@Unique private BlockPos lastFallCheckPos;
-	
-	@Inject(method = "fall", at = @At("HEAD"))
-	private void onFall(double d, boolean bl, BlockState blockState, BlockPos blockPos, CallbackInfo ci) {
-		lastFallCheckPos = blockPos;
-	}
 	
 	@ModifyArg(
 		method = "fall",
 		at = @At(value = "INVOKE", target = "Lnet/minecraft/particle/BlockStateParticleEffect;<init>(Lnet/minecraft/particle/ParticleType;Lnet/minecraft/block/BlockState;)V")
 	)
-	private BlockState modifyParticleState(BlockState origState) {
+	private BlockState modifyParticleState(BlockState state, @Local(ordinal = 0, argsOnly = true) BlockPos land_pos) {
 		World world = ((Entity) (Object) this).getWorld();
 		
-		if(lastFallCheckPos != null && world.getBlockEntity(lastFallCheckPos) instanceof ThemeableBlockEntity themeable) {
-			BlockState theme = themeable.getThemeState();
+		if(world.getBlockEntity(land_pos) instanceof ThemeableBlockEntity themeable
+			&& state.getBlock() instanceof ReFramedBlock block) {
+				BlockState theme = themeable.getTheme(block.getTopThemeIndex(state));
 				if(!theme.isAir()) return theme;
 		}
 		
-		return origState;
+		return state;
 	}
 }

src/main/java/fr/adrien1106/reframed/mixin/render/AbstractBlockRenderContextMixin.java

@@ -0,0 +1,36 @@
+package fr.adrien1106.reframed.mixin.render;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.mixin.IBlockRenderInfoMixin;
+import net.fabricmc.fabric.impl.client.indigo.renderer.mesh.MutableQuadViewImpl;
+import net.fabricmc.fabric.impl.client.indigo.renderer.render.AbstractBlockRenderContext;
+import net.fabricmc.fabric.impl.client.indigo.renderer.render.BlockRenderInfo;
+import net.minecraft.util.math.Direction;
+import org.jetbrains.annotations.Nullable;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(AbstractBlockRenderContext.class)
+public abstract class AbstractBlockRenderContextMixin {
+
+    @Shadow public abstract boolean isFaceCulled(@Nullable Direction face);
+
+    @Shadow(remap = false) @Final protected BlockRenderInfo blockInfo;
+
+    @Redirect(
+        method = "renderQuad",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/fabricmc/fabric/impl/client/indigo/renderer/render/AbstractBlockRenderContext;isFaceCulled(Lnet/minecraft/util/math/Direction;)Z"
+        )
+    )
+    private boolean shouldDrawInnerQuad(AbstractBlockRenderContext instance, Direction face, @Local(argsOnly = true) MutableQuadViewImpl quad) {
+        if (face != null || quad.tag() == 0 || !(blockInfo instanceof IBlockRenderInfoMixin info) || info.getThemeIndex() == 0) return isFaceCulled(face);
+
+        return !BlockHelper.shouldDrawInnerFace(blockInfo.blockState, blockInfo.blockView, blockInfo.blockPos, quad.tag() >>> 8, info.getThemeIndex());
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/render/BlockRenderInfoMixin.java

@@ -0,0 +1,54 @@
+package fr.adrien1106.reframed.mixin.render;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.mixin.IBlockRenderInfoMixin;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
+import net.fabricmc.fabric.impl.client.indigo.renderer.render.BlockRenderInfo;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.world.BlockRenderView;
+import net.minecraft.world.BlockView;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.ModifyArg;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(BlockRenderInfo.class)
+public abstract class BlockRenderInfoMixin implements IBlockRenderInfoMixin {
+
+    @Shadow public abstract void prepareForBlock(BlockState blockState, BlockPos blockPos, boolean modelAo);
+
+    @Shadow public BlockRenderView blockView;
+    @Unique private int theme_index = 0;
+
+    @ModifyArg(method = "prepareForBlock",
+        at = @At(value = "INVOKE", target = "Lnet/minecraft/client/render/RenderLayers;" +
+            "getBlockLayer(Lnet/minecraft/block/BlockState;)Lnet/minecraft/client/render/RenderLayer;"))
+    public BlockState prepareCamoLayer(BlockState state, @Local(argsOnly = true) BlockPos pos) {
+        BlockEntity block_entity = blockView.getBlockEntity(pos);
+        if (!(block_entity instanceof ThemeableBlockEntity frame_entity)) return state;
+        return frame_entity.getTheme(theme_index);
+    }
+
+    @Redirect(method = "shouldDrawFace", at = @At(value = "INVOKE", target = "Lnet/minecraft/block/Block;shouldDrawSide(Lnet/minecraft/block/BlockState;Lnet/minecraft/world/BlockView;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/util/math/Direction;Lnet/minecraft/util/math/BlockPos;)Z"))
+    private boolean shouldDrawAdjacentCamoSide(BlockState state, BlockView world, BlockPos pos, Direction side, BlockPos other_pos) {
+        return BlockHelper.shouldDrawSide(state, world, pos, side, other_pos, theme_index);
+    }
+
+    @Override
+    @Unique
+    public void prepareForBlock(BlockState state, BlockPos pos, boolean ao, int theme_index) {
+        this.theme_index = theme_index;
+        prepareForBlock(state, pos, ao);
+    }
+
+    @Override
+    public int getThemeIndex() {
+        return theme_index;
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/render/MultipartBakedModelMixin.java

@@ -0,0 +1,25 @@
+package fr.adrien1106.reframed.mixin.render;
+
+import fr.adrien1106.reframed.util.mixin.IMultipartBakedModelMixin;
+import net.minecraft.block.BlockState;
+import net.minecraft.client.render.model.BakedModel;
+import net.minecraft.client.render.model.MultipartBakedModel;
+import org.apache.commons.lang3.tuple.Pair;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+import java.util.List;
+import java.util.Objects;
+import java.util.function.Predicate;
+
+@Mixin(MultipartBakedModel.class)
+public class MultipartBakedModelMixin implements IMultipartBakedModelMixin {
+
+    @Shadow @Final private List<Pair<Predicate<BlockState>, BakedModel>> components;
+
+    @Override
+    public BakedModel getModel(BlockState state) {
+        return components.stream().map(pair -> pair.getLeft().test(state) ? pair.getRight(): null).filter(Objects::nonNull).findAny().orElse(null);
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/render/TerrainRenderContextMixin.java

@@ -0,0 +1,44 @@
+package fr.adrien1106.reframed.mixin.render;
+
+import fr.adrien1106.reframed.client.model.MultiRetexturableModel;
+import fr.adrien1106.reframed.util.blocks.BlockHelper;
+import fr.adrien1106.reframed.util.mixin.IBlockRenderInfoMixin;
+import fr.adrien1106.reframed.util.mixin.IMultipartBakedModelMixin;
+import net.fabricmc.fabric.api.renderer.v1.model.ForwardingBakedModel;
+import net.fabricmc.fabric.impl.client.indigo.renderer.render.AbstractBlockRenderContext;
+import net.fabricmc.fabric.impl.client.indigo.renderer.render.TerrainRenderContext;
+import net.minecraft.block.BlockState;
+import net.minecraft.client.render.model.BakedModel;
+import net.minecraft.client.util.math.MatrixStack;
+import net.minecraft.util.math.BlockPos;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import java.util.List;
+
+@Mixin(TerrainRenderContext.class)
+public abstract class TerrainRenderContextMixin extends AbstractBlockRenderContext {
+
+    @Inject(method = "tessellateBlock", at = @At(
+            value = "INVOKE",
+            target = "Lnet/fabricmc/fabric/impl/client/indigo/renderer/aocalc/AoCalculator;clear()V"
+        ), remap = false,
+        cancellable = true)
+    private void renderMultipleModels(BlockState state, BlockPos pos, BakedModel wrapper, MatrixStack matrixStack, CallbackInfo ci) {
+        if (!(wrapper instanceof IMultipartBakedModelMixin wrapped)
+            || !(wrapped.getModel(state) instanceof MultiRetexturableModel retexturing_model)) return;
+
+        List<ForwardingBakedModel> models = retexturing_model.models();
+        BlockHelper.computeInnerCull(state, models);
+        int i = 0;
+        for (BakedModel model : models) {
+            i++;
+            aoCalc.clear();
+            ((IBlockRenderInfoMixin) blockInfo).prepareForBlock(state, pos, model.useAmbientOcclusion(), i);
+            model.emitBlockQuads(blockInfo.blockView, blockInfo.blockState, blockInfo.blockPos, blockInfo.randomSupplier, this);
+        }
+        ci.cancel();
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/render/WorldRendererMixin.java

@@ -0,0 +1,35 @@
+package fr.adrien1106.reframed.mixin.render;
+
+import fr.adrien1106.reframed.block.ReFramedDoubleBlock;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.ShapeContext;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.render.WorldRenderer;
+import net.minecraft.util.hit.BlockHitResult;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.world.BlockView;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(WorldRenderer.class)
+public class WorldRendererMixin {
+
+    @Shadow @Final private MinecraftClient client;
+
+    @Redirect(method = "drawBlockOutline",
+        at = @At(value = "INVOKE", target = "Lnet/minecraft/block/BlockState;" +
+            "getOutlineShape(" +
+                "Lnet/minecraft/world/BlockView;" +
+                "Lnet/minecraft/util/math/BlockPos;" +
+                "Lnet/minecraft/block/ShapeContext;" +
+            ")Lnet/minecraft/util/shape/VoxelShape;"))
+    private VoxelShape getRenderOutline(BlockState state, BlockView world, BlockPos pos, ShapeContext shape_context) {
+        if (state.getBlock() instanceof ReFramedDoubleBlock double_frame_block) // cast is already checked in render
+            return double_frame_block.getRenderOutline(state, (BlockHitResult) client.crosshairTarget);
+        return state.getOutlineShape(world, pos, shape_context);
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/sound/BlockItemMixin.java

@@ -0,0 +1,48 @@
+package fr.adrien1106.reframed.mixin.sound;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import fr.adrien1106.reframed.block.ReFramedBlock;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Blocks;
+import net.minecraft.item.BlockItem;
+import net.minecraft.sound.BlockSoundGroup;
+import net.minecraft.sound.SoundEvent;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(BlockItem.class)
+public class BlockItemMixin {
+
+    @Redirect(
+        method = "place(Lnet/minecraft/item/ItemPlacementContext;)Lnet/minecraft/util/ActionResult;",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/block/BlockState;getSoundGroup()Lnet/minecraft/sound/BlockSoundGroup;"
+        )
+    )
+    public BlockSoundGroup getCamoPlaceSound(BlockState state, @Local World world, @Local BlockPos pos) {
+        if (state.getBlock() instanceof ReFramedBlock frame_block
+            && world.getBlockEntity(pos) instanceof ThemeableBlockEntity frame_entity
+        ) {
+            BlockState camo_state = frame_entity.getTheme(frame_block.getTopThemeIndex(state));
+            state = camo_state.getBlock() != Blocks.AIR ? camo_state : state;
+        }
+        return state.getSoundGroup();
+    }
+
+    @Redirect(
+        method = "place(Lnet/minecraft/item/ItemPlacementContext;)Lnet/minecraft/util/ActionResult;",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/item/BlockItem;getPlaceSound(Lnet/minecraft/block/BlockState;)Lnet/minecraft/sound/SoundEvent;"
+        )
+    )
+    private SoundEvent getCamoSoundEvent(BlockItem item, BlockState state, @Local BlockSoundGroup group) {
+        // I don't know why it wasn't doing that by default
+        return group.getPlaceSound();
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/sound/EntityMixin.java

@@ -0,0 +1,38 @@
+package fr.adrien1106.reframed.mixin.sound;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import fr.adrien1106.reframed.block.ReFramedBlock;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Blocks;
+import net.minecraft.entity.Entity;
+import net.minecraft.sound.BlockSoundGroup;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(Entity.class)
+public abstract class EntityMixin {
+
+    @Shadow public abstract World getWorld();
+
+    @Redirect(
+        method = "playStepSound",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/block/BlockState;getSoundGroup()Lnet/minecraft/sound/BlockSoundGroup;"
+        )
+    )
+    private BlockSoundGroup playStepCamoSound(BlockState state, @Local(argsOnly = true) BlockPos pos) {
+        if (state.getBlock() instanceof ReFramedBlock frame_block
+            && getWorld().getBlockEntity(pos) instanceof ThemeableBlockEntity frame_entity
+        ) {
+            BlockState camo_state = frame_entity.getTheme(frame_block.getTopThemeIndex(state));
+            state = camo_state.getBlock() != Blocks.AIR ? camo_state : state;
+        }
+        return state.getSoundGroup();
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/sound/LivingEntityMixin.java

@@ -0,0 +1,34 @@
+package fr.adrien1106.reframed.mixin.sound;
+
+import fr.adrien1106.reframed.block.ReFramedBlock;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Blocks;
+import net.minecraft.entity.LivingEntity;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(LivingEntity.class)
+public class LivingEntityMixin {
+
+    @Redirect(
+        method = "playBlockFallSound",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/world/World;getBlockState(Lnet/minecraft/util/math/BlockPos;)Lnet/minecraft/block/BlockState;"
+        )
+    )
+    private BlockState playCamoFallSound(World world, BlockPos pos) {
+        BlockState state = world.getBlockState(pos);
+        if (state.getBlock() instanceof ReFramedBlock frame_block
+            && world.getBlockEntity(pos) instanceof ThemeableBlockEntity frame_entity
+        ) {
+            BlockState camo_state = frame_entity.getTheme(frame_block.getTopThemeIndex(state));
+            state = camo_state.getBlock() != Blocks.AIR ? camo_state : state;
+        }
+        return state;
+    }
+}

src/main/java/fr/adrien1106/reframed/mixin/sound/WorldRendererMixin.java

@@ -0,0 +1,39 @@
+package fr.adrien1106.reframed.mixin.sound;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import fr.adrien1106.reframed.block.ReFramedBlock;
+import fr.adrien1106.reframed.util.blocks.ThemeableBlockEntity;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Blocks;
+import net.minecraft.client.render.WorldRenderer;
+import net.minecraft.client.world.ClientWorld;
+import net.minecraft.sound.BlockSoundGroup;
+import net.minecraft.util.math.BlockPos;
+import org.jetbrains.annotations.Nullable;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(WorldRenderer.class)
+public class WorldRendererMixin {
+
+    @Shadow @Nullable private ClientWorld world;
+
+    @Redirect(
+        method = "processWorldEvent",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/block/BlockState;getSoundGroup()Lnet/minecraft/sound/BlockSoundGroup;"
+        )
+    )
+    private BlockSoundGroup getCamoBreakSound(BlockState state, @Local(argsOnly = true) BlockPos pos) {
+        if (state.getBlock() instanceof ReFramedBlock frame_block
+            && world.getBlockEntity(pos) instanceof ThemeableBlockEntity frame_entity
+        ) {
+            BlockState camo_state = frame_entity.getTheme(frame_block.getTopThemeIndex(state));
+            state = camo_state.getBlock() != Blocks.AIR ? camo_state : state;
+        }
+        return state.getSoundGroup();
+    }
+}

src/main/java/fr/adrien1106/reframed/util/ReFramedInteractionUtil.java

@@ -1,182 +0,0 @@
-package fr.adrien1106.reframed.util;
-
-import fr.adrien1106.reframed.block.ReFramedEntity;
-import net.minecraft.block.AbstractBlock;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockEntityProvider;
-import net.minecraft.block.BlockState;
-import net.minecraft.block.Blocks;
-import net.minecraft.block.ShapeContext;
-import net.minecraft.entity.LivingEntity;
-import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.item.BlockItem;
-import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.item.ItemStack;
-import net.minecraft.item.ItemUsageContext;
-import net.minecraft.item.Items;
-import net.minecraft.nbt.NbtCompound;
-import net.minecraft.sound.BlockSoundGroup;
-import net.minecraft.sound.SoundCategory;
-import net.minecraft.sound.SoundEvents;
-import net.minecraft.state.StateManager;
-import net.minecraft.state.property.BooleanProperty;
-import net.minecraft.util.ActionResult;
-import net.minecraft.util.Hand;
-import net.minecraft.util.ItemScatterer;
-import net.minecraft.util.collection.DefaultedList;
-import net.minecraft.util.hit.BlockHitResult;
-import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Direction;
-import net.minecraft.util.shape.VoxelShape;
-import net.minecraft.util.shape.VoxelShapes;
-import net.minecraft.world.BlockView;
-import net.minecraft.world.GameRules;
-import net.minecraft.world.World;
-import org.jetbrains.annotations.Nullable;
-
-//For an example of how to use this class, have a look at TemplateBlock.
-//Basically there are several methods that would like to modify the return value of something.
-public class ReFramedInteractionUtil {
-	public static final BooleanProperty LIGHT = BooleanProperty.of("frame_light");
-	
-	public static StateManager.Builder<Block, BlockState> appendProperties(StateManager.Builder<Block, BlockState> builder) {
-		return builder.add(LIGHT);
-	}
-	
-	//Use this to obtain a Block.Settings that'll make your Template act like the ones in the mod.
-	//(To complete the look, don't forget to tag your blocks with mineable/axe.)
-	private static final AbstractBlock.ContextPredicate NOPE = (blah, blahdey, blahh) -> false;
-	public static AbstractBlock.Settings configureSettings(AbstractBlock.Settings s) {
-		return s.luminance(ReFramedInteractionUtil::luminance).nonOpaque().sounds(BlockSoundGroup.WOOD).hardness(0.2f).suffocates(NOPE).blockVision(NOPE);
-	}
-	
-	//And if you don't have a Block.Settings to copy off of.
-	public static AbstractBlock.Settings makeSettings() {
-		return configureSettings(AbstractBlock.Settings.create());
-	}
-	
-	public static BlockState setDefaultStates(BlockState in) {
-		if(in.contains(LIGHT)) in = in.with(LIGHT, false);
-		return in;
-	}
-	
-	public static @Nullable BlockState modifyPlacementState(@Nullable BlockState in, ItemPlacementContext ctx) {
-		return ReFramedEntity.weirdNbtLightLevelStuff(in, ctx.getStack());
-	}
-	
-	public static ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-		if(!(world.getBlockEntity(pos) instanceof ReFramedEntity be)) return ActionResult.PASS;
-		if(!player.canModifyBlocks() || !world.canPlayerModifyAt(player, pos)) return ActionResult.PASS;
-		
-		ItemStack held = player.getStackInHand(hand);
-		ReframedInteractible ext = state.getBlock() instanceof ReframedInteractible e ? e : ReframedInteractible.Default.INSTANCE;
-
-		//Glowstone
-		if(state.contains(LIGHT) && held.getItem() == Items.GLOWSTONE_DUST && !state.get(LIGHT) && !be.hasSpentGlowstoneDust()) {
-			world.setBlockState(pos, state.with(LIGHT, true));
-			be.spentGlowstoneDust();
-			
-			if(!player.isCreative()) held.decrement(1);
-			world.playSound(player, pos, SoundEvents.BLOCK_GLASS_HIT, SoundCategory.BLOCKS, 1f, 1f);
-			return ActionResult.SUCCESS;
-		}
-		
-		//Redstone
-		if(held.getItem() == Blocks.REDSTONE_TORCH.asItem() &&
-			!be.emitsRedstone() &&
-			!be.hasSpentRedstoneTorch() &&
-			ext.canAddRedstoneEmission(state, world, pos)
-		) {
-			be.setEmitsRedstone(true);
-			be.spentRedstoneTorch();
-			
-			if(!player.isCreative()) held.decrement(1);
-			world.playSound(player, pos, SoundEvents.BLOCK_LEVER_CLICK, SoundCategory.BLOCKS, 1f, 1f);
-			return ActionResult.SUCCESS;
-		}
-		
-		//Popped chorus fruit
-		if(held.getItem() == Items.POPPED_CHORUS_FRUIT &&
-			be.isSolid() &&
-			!be.hasSpentPoppedChorus() &&
-			ext.canRemoveCollision(state, world, pos)
-		) {
-			be.setSolidity(false);
-			be.spentPoppedChorus();
-			
-			if(!player.isCreative()) held.decrement(1);
-			world.playSound(player, pos, SoundEvents.ITEM_CHORUS_FRUIT_TELEPORT, SoundCategory.BLOCKS, 1f, 1f);
-			return ActionResult.SUCCESS;
-		}
-		
-		//Changing the theme
-		if(held.getItem() instanceof BlockItem bi && be.getThemeState().getBlock() == Blocks.AIR) {
-			Block block = bi.getBlock();
-			ItemPlacementContext ctx = new ItemPlacementContext(new ItemUsageContext(player, hand, hit));
-			BlockState placementState = block.getPlacementState(ctx);
-			if(placementState != null && Block.isShapeFullCube(placementState.getCollisionShape(world, pos)) && !(block instanceof BlockEntityProvider)) {
-				if(!world.isClient) be.setRenderedState(placementState);
-				
-				world.setBlockState(pos, state.with(LIGHT, be.hasSpentGlowstoneDust() || (placementState.getLuminance() != 0)));
-				be.setEmitsRedstone(be.hasSpentRedstoneTorch() || placementState.getWeakRedstonePower(world, pos, Direction.NORTH) != 0);
-				
-				if(!player.isCreative()) held.decrement(1);
-				world.playSound(player, pos, placementState.getSoundGroup().getPlaceSound(), SoundCategory.BLOCKS, 1f, 1.1f);
-				return ActionResult.SUCCESS;
-			}
-		}
-		
-		return ActionResult.PASS;
-	}
-	
-	//Maybe an odd spot to put this logic but it's consistent w/ vanilla chests, barrels, etc
-	public static void onStateReplaced(BlockState state, World world, BlockPos pos, BlockState newState, boolean moved) {
-		if(!state.isOf(newState.getBlock()) &&
-			world.getBlockEntity(pos) instanceof ReFramedEntity frame &&
-			world.getGameRules().getBoolean(GameRules.DO_TILE_DROPS)
-		) {
-			DefaultedList<ItemStack> drops = DefaultedList.of();
-			
-			//TODO: remember the specific ItemStack
-			Block theme = frame.getThemeState().getBlock();
-			if(theme != Blocks.AIR) drops.add(new ItemStack(theme));
-			
-			if(frame.hasSpentRedstoneTorch()) drops.add(new ItemStack(Items.REDSTONE_TORCH));
-			if(frame.hasSpentGlowstoneDust()) drops.add(new ItemStack(Items.GLOWSTONE_DUST));
-			if(frame.hasSpentPoppedChorus()) drops.add(new ItemStack(Items.POPPED_CHORUS_FRUIT));
-			
-			ItemScatterer.spawn(world, pos, drops);
-		}
-	}
-	
-	public static void onPlaced(World world, BlockPos pos, BlockState state, @Nullable LivingEntity placer, ItemStack stack) {
-		//Load the BlockEntityTag clientside, which fixes the template briefly showing its default state when placing it.
-		//I'm surprised this doesn't happen by default; the BlockEntityTag stuff is only done serverside.
-		if(world.isClient && world.getBlockEntity(pos) instanceof ReFramedEntity be) {
-			NbtCompound tag = BlockItem.getBlockEntityNbt(stack);
-			if(tag != null) be.readNbt(tag);
-		}
-	}
-	
-	//Returns "null" to signal "no opinion". Imagine it like an InteractionResult.PASS.
-	public static @Nullable VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, ShapeContext ctx) {
-		return view.getBlockEntity(pos) instanceof ReFramedEntity be && !be.isSolid() ? VoxelShapes.empty() : null;
-	}
-	
-	public static boolean emitsRedstonePower(BlockState state) {
-		//return state.contains(REDSTONE) ? state.get(REDSTONE) : false;
-		return false; //TODO, not available after punting this to BlockEntity. Yarn makes this method sound more important than it is, it's just for dust redirection.
-	}
-	
-	public static int getWeakRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return view.getBlockEntity(pos) instanceof ReFramedEntity be && be.emitsRedstone() ? 15 : 0;
-	}
-	
-	public static int getStrongRedstonePower(BlockState state, BlockView view, BlockPos pos, Direction dir) {
-		return view.getBlockEntity(pos) instanceof ReFramedEntity be && be.emitsRedstone() ? 15 : 0;
-	}
-	
-	public static int luminance(BlockState state) {
-		return state.contains(LIGHT) && state.get(LIGHT) ? 15 : 0;
-	}
-}

src/main/java/fr/adrien1106/reframed/util/ThemeableBlockEntity.java

@@ -1,10 +0,0 @@
-package fr.adrien1106.reframed.util;
-
-import net.fabricmc.fabric.api.rendering.data.v1.RenderAttachmentBlockEntity;
-import net.minecraft.block.BlockState;
-
-public interface ThemeableBlockEntity extends RenderAttachmentBlockEntity {
-	default BlockState getThemeState() {
-		return (BlockState) getRenderAttachmentData();
-	}
-}

src/main/java/fr/adrien1106/reframed/util/VoxelHelper.java

@@ -5,68 +5,201 @@ import net.minecraft.util.math.Direction;
 import net.minecraft.util.shape.VoxelShape;
 import net.minecraft.util.shape.VoxelShapes;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicReference;
+import java.util.function.Function;
+
+import static net.minecraft.util.shape.VoxelShapes.*;
+
 public class VoxelHelper {
-    public static VoxelShape rotateClockwise(VoxelShape shape, Direction.Axis axis) {
-        VoxelShape[] buffer = new VoxelShape[]{ shape, VoxelShapes.empty() };
-        switch (axis) {
-            case Y:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( 1 - maxZ, minY, minX, 1 - minZ, maxY, maxX), BooleanBiFunction.OR));
-                break;
-            case X:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( minX, 1 - maxZ, minY, maxX, 1 - minZ, maxY), BooleanBiFunction.OR));
-                break;
-            case Z:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( 1 - maxY, minX, minZ, 1 - minY, maxX, maxZ), BooleanBiFunction.OR));
-                break;
+
+    /* ---------------------------------------- Methods for VoxelListBuilder ---------------------------------------- */
+    public static VoxelShape rotateX(VoxelShape shape) {
+        return rotateClockwise(shape, Direction.Axis.X);
     }
-        return buffer[1];
+
+    public static VoxelShape rotateY(VoxelShape shape) {
+        return rotateClockwise(shape, Direction.Axis.Y);
+    }
+    public static VoxelShape rotateZ(VoxelShape shape) {
+        return rotateClockwise(shape, Direction.Axis.Z);
+    }
+
+    public static VoxelShape rotateCX(VoxelShape shape) {
+        return rotateCounterClockwise(shape, Direction.Axis.X);
+    }
+
+    public static VoxelShape rotateCY(VoxelShape shape) {
+        return rotateCounterClockwise(shape, Direction.Axis.Y);
+    }
+    public static VoxelShape rotateCZ(VoxelShape shape) {
+        return rotateCounterClockwise(shape, Direction.Axis.Z);
+    }
+
+    public static VoxelShape mirrorX(VoxelShape shape) {
+        return mirror(shape, Direction.Axis.X);
+    }
+
+    public static VoxelShape mirrorY(VoxelShape shape) {
+        return mirror(shape, Direction.Axis.Y);
+    }
+    public static VoxelShape mirrorZ(VoxelShape shape) {
+        return mirror(shape, Direction.Axis.Z);
+    }
+
+    public static VoxelShape rotateClockwise(VoxelShape shape, Direction.Axis axis) {
+        AtomicReference<VoxelShape> new_shape = new AtomicReference<>(empty());
+        shape.forEachBox((minX, minY, minZ, maxX, maxY, maxZ) ->
+            new_shape.getAndUpdate(s ->
+                combineAndSimplify(
+                    s,
+                    switch (axis) {
+                        case Y -> cuboid(1 - maxZ, minY, minX, 1 - minZ, maxY, maxX);
+                        case X -> cuboid(minX, 1 - maxZ, minY, maxX, 1 - minZ, maxY);
+                        case Z -> cuboid(1 - maxY, minX, minZ, 1 - minY, maxX, maxZ);
+                    },
+                    BooleanBiFunction.OR
+                )
+            )
+        );
+        return new_shape.get();
     }
 
     public static VoxelShape rotateCounterClockwise(VoxelShape shape, Direction.Axis axis) {
-        VoxelShape[] buffer = new VoxelShape[]{ shape, VoxelShapes.empty() };
+        AtomicReference<VoxelShape> new_shape = new AtomicReference<>(empty());
+        shape.forEachBox((minX, minY, minZ, maxX, maxY, maxZ) ->
+            new_shape.getAndUpdate(s ->
+                combineAndSimplify(
+                    s,
                     switch (axis) {
-            case Y:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( minZ, minY, 1 - maxX, maxZ, maxY, 1 - minX), BooleanBiFunction.OR));
-                break;
-            case X:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( minX, minZ, 1 - maxY, maxX, maxZ, 1 - minY), BooleanBiFunction.OR));
-                break;
-            case Z:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( minY, 1 - maxX, minZ, maxY, 1 - minX, maxZ), BooleanBiFunction.OR));
-                break;
-        }
-        return buffer[1];
+                        case Y -> cuboid(minZ, minY, 1 - maxX, maxZ, maxY, 1 - minX);
+                        case X -> cuboid(minX, minZ, 1 - maxY, maxX, maxZ, 1 - minY);
+                        case Z -> cuboid(minY, 1 - maxX, minZ, maxY, 1 - minX, maxZ);
+                    },
+                    BooleanBiFunction.OR
+                )
+            )
+        );
+        return new_shape.get();
     }
 
     public static VoxelShape mirror(VoxelShape shape, Direction.Axis axis) {
-        VoxelShape[] buffer = new VoxelShape[]{ shape, VoxelShapes.empty() };
+        AtomicReference<VoxelShape> new_shape = new AtomicReference<>(empty());
+        shape.forEachBox((minX, minY, minZ, maxX, maxY, maxZ) ->
+            new_shape.getAndUpdate(s ->
+                combineAndSimplify(
+                    s,
                     switch (axis) {
-            case Y:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( minX, 1 - maxY, minZ, maxX, 1 - minY, maxZ), BooleanBiFunction.OR));
-                break;
-            case X:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( 1 - maxX, minY, minZ, 1 - minX, maxY, maxZ), BooleanBiFunction.OR));
-                break;
-            case Z:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( minX, minY, 1 - maxZ, maxX, maxY, 1 - minZ), BooleanBiFunction.OR));
-                break;
-        }
-        return buffer[1];
+                        case Y -> cuboid(minX, 1 - maxY, minZ, maxX, 1 - minY, maxZ);
+                        case X -> cuboid(1 - maxX, minY, minZ, 1 - minX, maxY, maxZ);
+                        case Z -> cuboid(minX, minY, 1 - maxZ, maxX, maxY, 1 - minZ);
+                    },
+                    BooleanBiFunction.OR
+                )
+            )
+        );
+        return new_shape.get();
     }
 
     public static VoxelShape offset(VoxelShape shape, Direction.Axis axis, float offset) {
-        VoxelShape[] buffer = new VoxelShape[]{ shape, VoxelShapes.empty() };
+        AtomicReference<VoxelShape> new_shape = new AtomicReference<>(empty());
+        shape.forEachBox((minX, minY, minZ, maxX, maxY, maxZ) ->
+            new_shape.getAndUpdate(s ->
+                combineAndSimplify(
+                    s,
                     switch (axis) {
-            case Y:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( minX, offset + minY, minZ, maxX, offset + maxY, maxZ), BooleanBiFunction.OR));
-                break;
-            case X:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( offset + minX, minY, minZ, offset + maxX, maxY, maxZ), BooleanBiFunction.OR));
-                break;
-            case Z:
-                buffer[0].forEachBox((minX, minY, minZ, maxX, maxY, maxZ) -> buffer[1] = VoxelShapes.combineAndSimplify( buffer[1], VoxelShapes.cuboid( minX, minY, offset + minZ, maxX, maxY, offset + maxZ), BooleanBiFunction.OR));
-                break;
+                        case Y -> cuboid(minX, offset + minY, minZ, maxX, offset + maxY, maxZ);
+                        case X -> cuboid(offset + minX, minY, minZ, offset + maxX, maxY, maxZ);
+                        case Z -> cuboid(minX, minY, offset + minZ, maxX, maxY, offset + maxZ);
+                    },
+                    BooleanBiFunction.OR
+                )
+            )
+        );
+        return new_shape.get();
+    }
+
+    public static class VoxelListBuilder {
+        private final List<VoxelShape> voxels;
+
+        /**
+         * A simple class that helps to get cleaner shape list generation (Hopefully)
+         * @param base_shape - the shape to start with
+         * @param size - the amount of shapes expected
+         */
+        private VoxelListBuilder(VoxelShape base_shape, int size) {
+            voxels = new ArrayList<>(size);
+            voxels.add(base_shape);
+        }
+
+        public static VoxelListBuilder create(VoxelShape base_shape, int size) {
+            return new VoxelListBuilder(base_shape, size);
+        }
+
+        /**
+         * Add shape by applying modification to previous shape
+         * @param modifications - the modifications to apply @See {@link VoxelHelper} methods
+         * @return this instance
+         */
+        @SafeVarargs
+        public final VoxelListBuilder add(Function<VoxelShape, VoxelShape>... modifications) {
+            return add(voxels.size() - 1, modifications);
+        }
+
+        /**
+         * Add shape by applying modifications to given shape
+         * @param ref - the index of the reference shape
+         * @param modifications - the modifications to apply @See {@link VoxelHelper} methods
+         * @return this instance
+         */
+        @SafeVarargs
+        public final VoxelListBuilder add(int ref, Function<VoxelShape, VoxelShape>... modifications) {
+            return add(voxels.get(ref), modifications);
+        }
+
+        /**
+         * Add shape by applying modifications to given shape
+         * @param ref - the shape you want to add and apply modifications if present
+         * @param modifications - the modifications to apply @See {@link VoxelHelper} methods
+         * @return this instance
+         */
+        @SafeVarargs
+        public final VoxelListBuilder add(VoxelShape ref, Function<VoxelShape, VoxelShape>... modifications) {
+            for(Function<VoxelShape, VoxelShape> modif: modifications) {
+                ref = modif.apply(ref);
+            }
+            voxels.add(ref);
+            return this;
+        }
+
+        /**
+         * @return the final array of voxel shapes
+         */
+        public VoxelShape[] build() {
+            return voxels.toArray(new VoxelShape[0]);
+        }
+
+        /**
+         * build a new set of voxels based on th negation of the references and a full cube
+         * @param ref_voxels - the reference to subtract from the wanted shape
+         * @return the array of complementary voxels
+         */
+        public static VoxelShape[] buildFrom(VoxelShape[] ref_voxels) {
+            return buildFrom(VoxelShapes.fullCube(), ref_voxels);
+        }
+
+        /**
+         * build a new set of voxels based on th negation of the references and a wanted_shape
+         * @param ref_voxels - the reference to subtract from the wanted shape
+         * @return the array of complementary voxels
+         */
+        public static VoxelShape[] buildFrom(VoxelShape wanted_shape, VoxelShape[] ref_voxels) {
+            VoxelShape[] shapes = new VoxelShape[ref_voxels.length];
+            for (int i = 0; i < shapes.length; i++) {
+                shapes[i] = VoxelShapes.combineAndSimplify(wanted_shape, ref_voxels[i], BooleanBiFunction.ONLY_FIRST);
+            }
+            return shapes;
         }
-        return buffer[1];
     }
 }

src/main/java/fr/adrien1106/reframed/util/blocks/BlockHelper.java

@@ -0,0 +1,391 @@
+package fr.adrien1106.reframed.util.blocks;
+
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
+import fr.adrien1106.reframed.block.ReFramedBlock;
+import fr.adrien1106.reframed.block.ReFramedEntity;
+import fr.adrien1106.reframed.block.ReFramedStairBlock;
+import fr.adrien1106.reframed.block.ReFramedStairsCubeBlock;
+import fr.adrien1106.reframed.client.ReFramedClient;
+import fr.adrien1106.reframed.client.model.QuadPosBounds;
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+import net.fabricmc.fabric.api.renderer.v1.Renderer;
+import net.fabricmc.fabric.api.renderer.v1.material.RenderMaterial;
+import net.fabricmc.fabric.api.renderer.v1.mesh.QuadEmitter;
+import net.fabricmc.fabric.api.renderer.v1.model.ForwardingBakedModel;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockEntityProvider;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.Blocks;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.*;
+import net.minecraft.sound.SoundCategory;
+import net.minecraft.sound.SoundEvents;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.Hand;
+import net.minecraft.util.Pair;
+import net.minecraft.util.function.BooleanBiFunction;
+import net.minecraft.util.hit.BlockHitResult;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.random.Random;
+import net.minecraft.util.shape.VoxelShape;
+import net.minecraft.util.shape.VoxelShapes;
+import net.minecraft.world.BlockRenderView;
+import net.minecraft.world.BlockView;
+import net.minecraft.world.World;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.EDGE;
+import static fr.adrien1106.reframed.util.blocks.BlockProperties.LIGHT;
+import static fr.adrien1106.reframed.util.blocks.StairShape.*;
+import static net.minecraft.util.shape.VoxelShapes.combine;
+
+public class BlockHelper {
+
+    // self culling cache of the models not made thread local so that it is only computed once
+    private static final Cache<CullElement, Integer[]> INNER_CULL_MAP = CacheBuilder.newBuilder().maximumSize(1024).build();
+    private record CullElement(Block block, Object state_key, int model) {}
+
+    public static Corner getPlacementCorner(ItemPlacementContext ctx) {
+        Direction side = ctx.getSide().getOpposite();
+        Vec3d pos = getHitPos(ctx.getHitPos(), ctx.getBlockPos());
+        Pair<Direction, Direction> sides = getHitSides(pos, side);
+
+        return Corner.getByDirections(side, sides.getLeft(), sides.getRight());
+    }
+
+    private static Pair<Direction, Direction> getHitSides(Vec3d pos, Direction side) {
+        Iterator<Direction.Axis> axes = Stream.of(Direction.Axis.values())
+            .filter(axis -> !axis.equals(side.getAxis())).iterator();
+        return new Pair<>(getHitDirection(axes.next(), pos), getHitDirection(axes.next(), pos));
+    }
+
+    public static Edge getPlacementEdge(ItemPlacementContext ctx) {
+        Direction side = ctx.getSide().getOpposite();
+        Vec3d pos = getHitPos(ctx.getHitPos(), ctx.getBlockPos());
+        Direction.Axis axis = getHitAxis(pos, side);
+
+        Direction part_direction = getHitDirection(axis, pos);
+
+        return Edge.getByDirections(side, part_direction);
+    }
+
+    public static Direction.Axis getHitAxis(Vec3d pos, Direction side) {
+        Stream<Direction.Axis> axes = Stream.of(Direction.Axis.values()).filter(axis -> !axis.equals(side.getAxis()));
+        return axes.reduce((axis_1, axis_2) ->
+            Math.abs(axis_1.choose(pos.x, pos.y, pos.z)) > Math.abs(axis_2.choose(pos.x, pos.y, pos.z))
+                ? axis_1
+                : axis_2
+        ).orElse(null);
+    }
+
+    public static Direction getHitDirection(Direction.Axis axis, Vec3d pos) {
+        return Direction.from(
+            axis,
+            axis.choose(pos.x, pos.y, pos.z) > 0
+                ? Direction.AxisDirection.POSITIVE
+                : Direction.AxisDirection.NEGATIVE
+        );
+    }
+
+    public static Vec3d getRelativePos(Vec3d pos, BlockPos block_pos) {
+        return new Vec3d(
+            pos.getX() - block_pos.getX(),
+            pos.getY() - block_pos.getY(),
+            pos.getZ() - block_pos.getZ()
+        );
+    }
+
+    public static Vec3d getHitPos(Vec3d pos, BlockPos block_pos) {
+        pos = getRelativePos(pos, block_pos);
+        return new Vec3d(
+            pos.getX() - .5d,
+            pos.getY() - .5d,
+            pos.getZ() - .5d
+        );
+    }
+
+    public static StairShape getStairsShape(Edge face, BlockView world, BlockPos pos) {
+        StairShape shape = STRAIGHT;
+
+        String sol = getNeighborPos(face, face.getFirstDirection(), true, face.getSecondDirection(), world, pos);
+        switch (sol) {
+            case "right": return INNER_RIGHT;
+            case "left": return INNER_LEFT;
+        }
+
+        sol = getNeighborPos(face, face.getSecondDirection(), true, face.getFirstDirection(), world, pos);
+        switch (sol) {
+            case "right": return INNER_RIGHT;
+            case "left": return INNER_LEFT;
+        }
+
+        sol = getNeighborPos(face, face.getFirstDirection(), false, face.getSecondDirection(), world, pos);
+        switch (sol) {
+            case "right" -> shape = FIRST_OUTER_RIGHT;
+            case "left" -> shape = FIRST_OUTER_LEFT;
+        }
+
+        sol = getNeighborPos(face, face.getSecondDirection(), false, face.getFirstDirection(), world, pos);
+        switch (sol) {
+            case "right" -> {
+                if (shape.equals(STRAIGHT)) shape = SECOND_OUTER_RIGHT;
+                else if (shape.equals(FIRST_OUTER_RIGHT)) shape = OUTER_RIGHT;
+            }
+            case "left" -> {
+                if (shape.equals(STRAIGHT)) shape = SECOND_OUTER_LEFT;
+                else if (shape.equals(FIRST_OUTER_LEFT)) shape = OUTER_LEFT;
+            }
+        }
+
+        return shape;
+    }
+
+    public static String getNeighborPos(Edge face, Direction direction, Boolean reverse, Direction reference, BlockView world, BlockPos pos) {
+        BlockState block_state = world.getBlockState(
+            pos.offset(reverse ? direction.getOpposite() : direction)
+        );
+
+        if (isStair(block_state) && block_state.get(EDGE).hasDirection(reference)) {
+            if (block_state.get(EDGE).hasDirection(face.getLeftDirection())) return "left";
+            else if (block_state.get(EDGE).hasDirection(face.getRightDirection())) return "right";
+        }
+        return "";
+    }
+
+    public static boolean isStair(BlockState state) {
+        return state.getBlock() instanceof ReFramedStairBlock
+            || state.getBlock() instanceof ReFramedStairsCubeBlock;
+    }
+
+    public static ActionResult useCamo(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit, int theme_index) {
+        if(!(world.getBlockEntity(pos) instanceof ReFramedEntity block_entity)) return ActionResult.PASS;
+
+        // Changing the theme
+        ItemStack held = player.getStackInHand(hand);
+        if(held.getItem() instanceof BlockItem block_item && block_entity.getTheme(theme_index).getBlock() == Blocks.AIR) {
+            Block block = block_item.getBlock();
+            ItemPlacementContext ctx = new ItemPlacementContext(new ItemUsageContext(player, hand, hit));
+            BlockState placement_state = block.getPlacementState(ctx);
+            if(placement_state != null && Block.isShapeFullCube(placement_state.getCollisionShape(world, pos)) && !(block instanceof BlockEntityProvider)) {
+                List<BlockState> themes = block_entity.getThemes();
+                if(!world.isClient) block_entity.setTheme(placement_state, theme_index);
+
+                // check for default light emission
+                if (placement_state.getLuminance() > 0
+                    && themes.stream().noneMatch(theme -> theme.getLuminance() > 0)
+                    && !block_entity.emitsLight()
+                )
+                    block_entity.toggleLight();
+
+                world.setBlockState(pos, state.with(LIGHT, block_entity.emitsLight()));
+
+                // check for default redstone emission
+                if (placement_state.getWeakRedstonePower(world, pos, Direction.NORTH) > 0
+                    && themes.stream().noneMatch(theme -> theme.getWeakRedstonePower(world, pos, Direction.NORTH) > 0)
+                    && !block_entity.emitsRedstone()
+                ) block_entity.toggleRedstone();
+
+                if(!player.isCreative()) held.decrement(1);
+                world.playSound(player, pos, placement_state.getSoundGroup().getPlaceSound(), SoundCategory.BLOCKS, 1f, 1.1f);
+                return ActionResult.SUCCESS;
+            }
+        }
+
+        return ActionResult.PASS;
+    }
+
+    public static ActionResult useUpgrade(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand) {
+        if(!(world.getBlockEntity(pos) instanceof ReFramedEntity block_entity)) return ActionResult.PASS;
+
+        ItemStack held = player.getStackInHand(hand);
+        ReframedInteractible ext = state.getBlock() instanceof ReframedInteractible e ? e : ReframedInteractible.Default.INSTANCE;
+
+        // frame will emit light if applied with glowstone
+        if(state.contains(LIGHT) && held.getItem() == Items.GLOWSTONE_DUST) {
+            block_entity.toggleLight();
+            world.setBlockState(pos, state.with(LIGHT, block_entity.emitsLight()));
+            world.playSound(player, pos, SoundEvents.BLOCK_GLASS_HIT, SoundCategory.BLOCKS, 1f, 1f);
+            return ActionResult.SUCCESS;
+        }
+
+        // frame will emit redstone if applied with redstone torch can deactivate redstone block camo emission
+        if(held.getItem() == Items.REDSTONE_TORCH && ext.canAddRedstoneEmission(state, world, pos)) {
+            block_entity.toggleRedstone();
+            world.playSound(player, pos, SoundEvents.BLOCK_LEVER_CLICK, SoundCategory.BLOCKS, 1f, 1f);
+            return ActionResult.SUCCESS;
+        }
+
+        // Frame will lose its collision if applied with popped chorus fruit
+        if(held.getItem() == Items.POPPED_CHORUS_FRUIT && ext.canRemoveCollision(state, world, pos)) {
+            block_entity.toggleSolidity();
+            world.playSound(player, pos, SoundEvents.ITEM_CHORUS_FRUIT_TELEPORT, SoundCategory.BLOCKS, 1f, 1f);
+            return ActionResult.SUCCESS;
+        }
+
+        return ActionResult.PASS;
+    }
+
+    /**
+     * compute which quad might cull with another model quad
+     * @param state - the state of the model
+     * @param models - list of models on the same block
+     */
+    @Environment(EnvType.CLIENT)
+    public static void computeInnerCull(BlockState state, List<ForwardingBakedModel> models) {
+        if (!(state.getBlock() instanceof ReFramedBlock frame_block)) return;
+        Object key = frame_block.getModelCacheKey(state);
+        if (INNER_CULL_MAP.asMap().containsKey(new CullElement(frame_block, key, 1))) return;
+
+        Renderer r = ReFramedClient.HELPER.getFabricRenderer();
+        QuadEmitter quad_emitter = r.meshBuilder().getEmitter();
+        RenderMaterial material = r.materialFinder().clear().find();
+        Random random = Random.create();
+
+        List<List<QuadPosBounds>> model_bounds = models.stream()
+            .map(ForwardingBakedModel::getWrappedModel)
+            .filter(Objects::nonNull)
+            .map(wrapped -> wrapped.getQuads(state, null, random))
+            .map(quads -> quads.stream().map(quad -> {
+                quad_emitter.fromVanilla(quad, material, null);
+                return QuadPosBounds.read(quad_emitter, false);
+            }).toList()).toList();
+
+        Integer[] cull_array;
+        for(int self_id = 1; self_id <= model_bounds.size(); self_id++) {
+            List<QuadPosBounds> self_bounds = model_bounds.get(self_id - 1);
+            cull_array = new Integer[self_bounds.size()];
+            for (int self_quad = 0; self_quad < cull_array.length; self_quad++) {
+                QuadPosBounds self_bound = self_bounds.get(self_quad);
+                for(int other_id = 1; other_id <= model_bounds.size(); other_id++) {
+                    if (other_id == self_id) continue;
+                    if (model_bounds.get(other_id - 1).stream().anyMatch(other_bound -> other_bound.equals(self_bound))) {
+                        cull_array[self_quad] = other_id;
+                        break;
+                    }
+                }
+            }
+            INNER_CULL_MAP.put(new CullElement(frame_block, key, self_id), cull_array);
+        }
+    }
+
+    @Environment(EnvType.CLIENT)
+    public static boolean shouldDrawInnerFace(BlockState state, BlockRenderView view, BlockPos pos, int quad_index, int theme_index) {
+        if ( !(state.getBlock() instanceof ReFramedBlock frame_block)
+            || !(view.getBlockEntity(pos) instanceof ThemeableBlockEntity frame_entity)
+        ) return true;
+        CullElement key = new CullElement(frame_block, frame_block.getModelCacheKey(state), theme_index);
+        if (!INNER_CULL_MAP.asMap().containsKey(key)) return true;
+
+        // needs to be Integer object because array is initialized with null not 0
+        Integer cull_theme = Objects.requireNonNull(INNER_CULL_MAP.getIfPresent(key))[quad_index];
+        if (cull_theme == null) return true; // no culling possible
+
+        BlockState self_theme = frame_entity.getTheme(theme_index);
+        BlockState other_theme = frame_entity.getTheme(cull_theme);
+
+        if (self_theme.isSideInvisible(other_theme, null)) return false;
+        return !self_theme.isOpaque() || !other_theme.isOpaque();
+    }
+
+    // Doing this method from scratch as it is simpler to do than injecting everywhere
+    @Environment(EnvType.CLIENT)
+    public static boolean shouldDrawSide(BlockState self_state, BlockView world, BlockPos pos, Direction side, BlockPos other_pos, int theme_index) {
+        ThemeableBlockEntity self = world.getBlockEntity(pos) instanceof ThemeableBlockEntity e ? e : null;
+        ThemeableBlockEntity other = world.getBlockEntity(other_pos) instanceof ThemeableBlockEntity e ? e : null;
+        BlockState other_state = world.getBlockState(other_pos);
+
+        // normal behaviour
+        if (self == null && other == null) return Block.shouldDrawSide(self_state, world, pos, side, other_pos);
+
+        // self is a normal Block
+        if (self == null && other_state.getBlock() instanceof ReFramedBlock other_block) {
+            VoxelShape self_shape = self_state.getCullingShape(world, pos);
+            if (self_shape.isEmpty()) return true;
+
+            int i = 0;
+            VoxelShape other_shape = VoxelShapes.empty();
+            for (BlockState s: other.getThemes()) {
+                i++;
+                if (self_state.isSideInvisible(s, side) || s.isOpaque())
+                    other_shape = combine(
+                        other_shape,
+                        other_block
+                            .getShape(other_state, i)
+                            .getFace(side.getOpposite()),
+                        BooleanBiFunction.OR
+                    );
+            }
+
+            // determine if side needs to be rendered
+            return VoxelShapes.matchesAnywhere(self_shape, other_shape, BooleanBiFunction.ONLY_FIRST);
+        }
+
+        BlockState self_theme = self.getTheme(theme_index);
+        // other is normal Block
+        if (other == null && self_state.getBlock() instanceof ReFramedBlock self_block) {
+            // Transparent is simple if self and the neighbor are invisible don't render side (like default)
+            if (self_theme.isSideInvisible(other_state, side)) return false;
+
+            // Opaque is also simple as each model are rendered one by one
+            if (other_state.isOpaque()) {
+                // no cache section :( because it differs between each instance of the frame
+                VoxelShape self_shape = self_block.getShape(self_state, theme_index).getFace(side);
+                if (self_shape.isEmpty()) return true;
+                VoxelShape other_shape = other_state.getCullingFace(world, other_pos, side.getOpposite());
+
+                // determine if side needs to be rendered
+                return VoxelShapes.matchesAnywhere(self_shape, other_shape, BooleanBiFunction.ONLY_FIRST);
+            }
+
+            return true;
+        }
+
+        // Both are frames
+        // here both are computed in the same zone as there will necessarily a shape comparison
+        if (self_state.getBlock() instanceof ReFramedBlock self_block && other_state.getBlock() instanceof ReFramedBlock other_block) {
+            VoxelShape self_shape = self_block.getShape(self_state, theme_index).getFace(side);
+            if (self_shape.isEmpty()) return true;
+
+            int i = 0;
+            VoxelShape other_shape = VoxelShapes.empty();
+            for (BlockState s: other.getThemes()) {
+                i++;
+                if (self_theme.isSideInvisible(s, side) || s.isOpaque())
+                    other_shape = combine(
+                        other_shape,
+                        other_block
+                            .getShape(other_state, i)
+                            .getFace(side.getOpposite()),
+                        BooleanBiFunction.OR
+                    );
+            }
+
+            // determine if side needs to be rendered
+            return VoxelShapes.matchesAnywhere(self_shape, other_shape, BooleanBiFunction.ONLY_FIRST);
+        }
+
+        return true;
+    }
+
+    public static boolean cursorMatchesFace(VoxelShape shape, Vec3d pos) {
+        Map<Direction.Axis, Double> axes = Arrays.stream(Direction.Axis.values())
+            .collect(Collectors.toMap(
+                x -> x,
+                x -> x.choose(pos.getX(), pos.getY(), pos.getZ())
+            ));
+
+        return shape.getBoundingBoxes().stream()
+            .anyMatch(box ->
+                axes.keySet().stream()
+                    .map(x -> box.getMin(x) <= axes.get(x) && box.getMax(x) >= axes.get(x))
+                    .reduce((prev, current) -> prev && current).orElse(false)
+            );
+    }
+}

src/main/java/fr/adrien1106/reframed/util/blocks/BlockProperties.java

@@ -0,0 +1,13 @@
+package fr.adrien1106.reframed.util.blocks;
+
+import net.minecraft.state.property.BooleanProperty;
+import net.minecraft.state.property.EnumProperty;
+import net.minecraft.state.property.IntProperty;
+
+public class BlockProperties {
+    public static final BooleanProperty LIGHT = BooleanProperty.of("emits_light");
+    public static final EnumProperty<Edge> EDGE = EnumProperty.of("edge", Edge.class);
+    public static final EnumProperty<Corner> CORNER = EnumProperty.of("corner", Corner.class);
+    public static final IntProperty CORNER_FACE = IntProperty.of("face", 0, 2);
+    public static final EnumProperty<StairShape> STAIR_SHAPE = EnumProperty.of("shape", StairShape.class);
+}

src/main/java/fr/adrien1106/reframed/util/blocks/Corner.java

@@ -0,0 +1,97 @@
+package fr.adrien1106.reframed.util.blocks;
+
+import net.minecraft.util.StringIdentifiable;
+import net.minecraft.util.math.Direction;
+
+import java.util.Arrays;
+
+public enum Corner implements StringIdentifiable {
+    NORTH_EAST_DOWN("north_east_down", Direction.NORTH, Direction.EAST, Direction.DOWN, 0),
+    EAST_SOUTH_DOWN("east_south_down", Direction.EAST, Direction.SOUTH, Direction.DOWN, 1),
+    SOUTH_WEST_DOWN("south_west_down", Direction.SOUTH, Direction.WEST, Direction.DOWN, 2),
+    WEST_NORTH_DOWN("west_north_down", Direction.WEST, Direction.NORTH, Direction.DOWN, 3),
+    NORTH_EAST_UP("north_east_up", Direction.NORTH, Direction.EAST, Direction.UP, 4),
+    EAST_SOUTH_UP("east_south_up", Direction.EAST, Direction.SOUTH, Direction.UP, 5),
+    SOUTH_WEST_UP("south_west_up", Direction.SOUTH, Direction.WEST, Direction.UP, 6),
+    WEST_NORTH_UP("west_north_up", Direction.WEST, Direction.NORTH, Direction.UP, 7);
+
+    private final String name;
+    private final Direction first_direction;
+    private final Direction second_direction;
+    private final Direction third_direction;
+    private final int ID;
+
+    Corner(String name, Direction first_direction, Direction second_direction, Direction third_direction, int id) {
+        this.name = name;
+        this.first_direction = first_direction;
+        this.second_direction = second_direction;
+        this.third_direction = third_direction;
+        this.ID = id;
+    }
+
+    public String asString() {
+        return this.name;
+    }
+
+    public String toString() {
+        return asString();
+    }
+
+    public boolean hasDirection(Direction direction) {
+        return this.first_direction.equals(direction)
+            || this.second_direction.equals(direction)
+            || this.third_direction.equals(direction);
+    }
+
+    public int getID() {
+        return this.ID;
+    }
+
+    public static Corner getByDirections(Direction direction_1, Direction direction_2, Direction direction_3) {
+        return Arrays.stream(Corner.values())
+            .filter(value -> value.hasDirection(direction_1) && value.hasDirection(direction_2) && value.hasDirection(direction_3))
+            .findFirst().orElse(Corner.NORTH_EAST_DOWN);
+    }
+
+    public static Corner fromId(int id) {
+        return Arrays.stream(Corner.values())
+            .filter(value -> value.getID() == id)
+            .findFirst().orElse(Corner.NORTH_EAST_DOWN);
+    }
+
+    public static Corner fromName(String name) {
+        return Arrays.stream(Corner.values())
+            .filter(value -> value.name().equals(name))
+            .findFirst().orElse(Corner.NORTH_EAST_DOWN);
+    }
+
+    public int getDirectionIndex(Direction side) {
+        return side == second_direction ? 1 : side == third_direction ? 2 : 0;
+    }
+
+    public Direction getDirection(int index) {
+        return index == 1 ? second_direction : index == 2 ? third_direction : first_direction;
+    }
+
+    public Corner getOpposite() {
+        return getByDirections(first_direction.getOpposite(), second_direction.getOpposite(), third_direction.getOpposite());
+    }
+
+    /**
+     * @param index - an index of the direction to keep and use as reference
+     * @return the opposite corner on same direction plane
+     */
+    public Corner getOpposite(int index) {
+        return getOpposite(getDirection(index));
+    }
+
+    /**
+     * @param direction - a direction to keep and use as reference
+     * @return the opposite corner on same direction plane
+     */
+    public Corner getOpposite(Direction direction) {
+        Direction other_1 = first_direction == direction ? second_direction : first_direction;
+        Direction other_2 = second_direction == direction || first_direction == direction ? third_direction : second_direction;
+        return getByDirections(direction, other_1.getOpposite(), other_2.getOpposite());
+    }
+}

src/main/java/fr/adrien1106/reframed/util/blocks/Edge.java

@@ -1,37 +1,35 @@
-package fr.adrien1106.reframed.util.property;
+package fr.adrien1106.reframed.util.blocks;
 
 import net.minecraft.util.StringIdentifiable;
 import net.minecraft.util.math.Direction;
 
 import java.util.Arrays;
 
-public enum StairDirection implements StringIdentifiable {
-    NORTH_DOWN("north_down", Direction.NORTH, Direction.DOWN, Direction.EAST, 0),
-    DOWN_SOUTH("down_south", Direction.DOWN, Direction.SOUTH, Direction.EAST, 1),
-    SOUTH_UP("south_up", Direction.SOUTH, Direction.UP, Direction.EAST, 2),
-    UP_NORTH("up_north", Direction.UP, Direction.NORTH, Direction.EAST, 3),
-    WEST_DOWN("west_down", Direction.WEST, Direction.DOWN, Direction.SOUTH, 4),
-    DOWN_EAST("down_east", Direction.DOWN, Direction.EAST, Direction.SOUTH, 5),
-    EAST_UP("east_up", Direction.EAST, Direction.UP, Direction.SOUTH, 6),
-    UP_WEST("up_west", Direction.UP, Direction.WEST, Direction.SOUTH, 7),
-    WEST_NORTH("west_north", Direction.WEST, Direction.NORTH, Direction.DOWN, 8),
-    NORTH_EAST("north_east", Direction.NORTH, Direction.EAST, Direction.DOWN, 9),
-    EAST_SOUTH("east_south", Direction.EAST, Direction.SOUTH, Direction.DOWN, 10),
-    SOUTH_WEST("south_west", Direction.SOUTH, Direction.WEST, Direction.DOWN, 11);
+public enum Edge implements StringIdentifiable {
+    NORTH_DOWN("north_down", Direction.NORTH, Direction.DOWN, Direction.Axis.X, 0),
+    DOWN_SOUTH("down_south", Direction.DOWN, Direction.SOUTH, Direction.Axis.X, 1),
+    SOUTH_UP("south_up", Direction.SOUTH, Direction.UP, Direction.Axis.X, 2),
+    UP_NORTH("up_north", Direction.UP, Direction.NORTH, Direction.Axis.X, 3),
+    WEST_DOWN("west_down", Direction.WEST, Direction.DOWN, Direction.Axis.Z, 4),
+    DOWN_EAST("down_east", Direction.DOWN, Direction.EAST, Direction.Axis.Z, 5),
+    EAST_UP("east_up", Direction.EAST, Direction.UP, Direction.Axis.Z, 6),
+    UP_WEST("up_west", Direction.UP, Direction.WEST, Direction.Axis.Z, 7),
+    WEST_NORTH("west_north", Direction.WEST, Direction.NORTH, Direction.Axis.Y, 8),
+    NORTH_EAST("north_east", Direction.NORTH, Direction.EAST, Direction.Axis.Y, 9),
+    EAST_SOUTH("east_south", Direction.EAST, Direction.SOUTH, Direction.Axis.Y, 10),
+    SOUTH_WEST("south_west", Direction.SOUTH, Direction.WEST, Direction.Axis.Y, 11);
 
     private final String name;
     private final Direction first_direction;
     private final Direction second_direction;
-    private final Direction right_direction;
-    private final Direction left_direction;
+    private final Direction.Axis axis;
     private final int ID;
 
-    StairDirection(String name, Direction first_direction, Direction second_direction, Direction right_direction, int id) {
+    Edge(String name, Direction first_direction, Direction second_direction, Direction.Axis axis, int id) {
         this.name = name;
         this.first_direction = first_direction;
         this.second_direction = second_direction;
-        this.right_direction = right_direction;
-        this.left_direction = right_direction.getOpposite();
+        this.axis = axis;
         this.ID = id;
     }
 
@@ -51,10 +49,18 @@ public enum StairDirection implements StringIdentifiable {
         return second_direction;
     }
     public Direction getRightDirection() {
-        return right_direction;
+        return switch (axis) {
+            case X -> Direction.WEST;
+            case Y -> Direction.DOWN;
+            case Z -> Direction.SOUTH;
+        };
     }
     public Direction getLeftDirection() {
-        return left_direction;
+        return switch (axis) {
+            case X -> Direction.EAST;
+            case Y -> Direction.UP;
+            case Z -> Direction.NORTH;
+        };
     }
 
     public boolean hasDirection(Direction direction) {
@@ -66,21 +72,21 @@ public enum StairDirection implements StringIdentifiable {
         return this.ID;
     }
 
-    public static StairDirection getByDirections(Direction direction_1, Direction direction_2) {
-        return Arrays.stream(StairDirection.values())
+    public static Edge getByDirections(Direction direction_1, Direction direction_2) {
+        return Arrays.stream(Edge.values())
             .filter(value -> value.hasDirection(direction_1) && value.hasDirection(direction_2))
-            .findFirst().orElse(StairDirection.NORTH_DOWN);
+            .findFirst().orElse(Edge.NORTH_DOWN);
     }
 
-    public static StairDirection fromId(int id) {
-        return Arrays.stream(StairDirection.values())
+    public static Edge fromId(int id) {
+        return Arrays.stream(Edge.values())
             .filter(value -> value.getID() == id)
-            .findFirst().orElse(StairDirection.NORTH_DOWN);
+            .findFirst().orElse(Edge.NORTH_DOWN);
     }
 
-    public static StairDirection fromName(String name) {
-        return Arrays.stream(StairDirection.values())
+    public static Edge fromName(String name) {
+        return Arrays.stream(Edge.values())
             .filter(value -> value.name().equals(name))
-            .findFirst().orElse(StairDirection.NORTH_DOWN);
+            .findFirst().orElse(Edge.NORTH_DOWN);
     }
 }

src/main/java/fr/adrien1106/reframed/util/blocks/ReframedInteractible.java

@@ -1,4 +1,4 @@
-package fr.adrien1106.reframed.util;
+package fr.adrien1106.reframed.util.blocks;
 
 import net.minecraft.block.BlockState;
 import net.minecraft.util.math.BlockPos;

src/main/java/fr/adrien1106/reframed/util/blocks/StairShape.java

@@ -1,4 +1,4 @@
-package fr.adrien1106.reframed.util.property;
+package fr.adrien1106.reframed.util.blocks;
 
 import net.minecraft.util.StringIdentifiable;
 

src/main/java/fr/adrien1106/reframed/util/blocks/ThemeableBlockEntity.java

@@ -0,0 +1,13 @@
+package fr.adrien1106.reframed.util.blocks;
+
+import net.minecraft.block.BlockState;
+
+import java.util.List;
+
+public interface ThemeableBlockEntity {
+	BlockState getTheme(int i);
+
+	void setTheme(BlockState state, int i);
+
+	List<BlockState> getThemes();
+}

src/main/java/fr/adrien1106/reframed/util/mixin/IBlockRenderInfoMixin.java

@@ -0,0 +1,13 @@
+package fr.adrien1106.reframed.util.mixin;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.util.math.BlockPos;
+
+public interface IBlockRenderInfoMixin {
+
+    void prepareForBlock(BlockState state, BlockPos pos, boolean ao, int theme_index);
+
+    void prepareForBlock(BlockState state, BlockPos pos, long seed, boolean ao, int theme_index);
+
+    int getThemeIndex();
+}

src/main/java/fr/adrien1106/reframed/util/mixin/IMultipartBakedModelMixin.java

@@ -0,0 +1,9 @@
+package fr.adrien1106.reframed.util.mixin;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.client.render.model.BakedModel;
+
+public interface IMultipartBakedModelMixin {
+
+    BakedModel getModel(BlockState state);
+}