get configuration working!

src/main/java/io/github/cottonmc/slopetest/block/SlopeTestBlock.java

@@ -2,12 +2,14 @@ package io.github.cottonmc.slopetest.block;
 
 import io.github.cottonmc.slopetest.block.entity.SlopeTestEntity;
 import net.fabricmc.fabric.api.block.FabricBlockSettings;
-import net.fabricmc.fabric.api.block.entity.BlockEntityClientSerializable;
 import net.minecraft.block.*;
 import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.entity.EntityContext;
+import net.minecraft.entity.ItemEntity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.BlockItem;
 import net.minecraft.item.ItemPlacementContext;
+import net.minecraft.item.ItemStack;
 import net.minecraft.state.StateFactory;
 import net.minecraft.state.property.DirectionProperty;
 import net.minecraft.state.property.Properties;
@@ -15,6 +17,8 @@ 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;
 
@@ -23,6 +27,12 @@ import javax.annotation.Nullable;
 public class SlopeTestBlock extends Block implements BlockEntityProvider {
 	public static final DirectionProperty FACING = Properties.HORIZONTAL_FACING;
 
+	public static final VoxelShape BASE = VoxelShapes.cuboid(0f, 0f, 0f, 1f, 0.5f, 1f);
+	public static final VoxelShape NORTH = VoxelShapes.cuboid(0f, 0.5f, 0f, 1f, 1f, 0.5f);
+	public static final VoxelShape SOUTH = VoxelShapes.cuboid(0f, 0.5f, 0.5f, 1f, 1f, 1f);
+	public static final VoxelShape EAST = VoxelShapes.cuboid(0.5f, 0.5f, 0f, 1f, 1f, 1f);
+	public static final VoxelShape WEST = VoxelShapes.cuboid(0f, 0.5f, 0f, 0.5f, 1f, 1f);
+
 	public SlopeTestBlock() {
 		super(FabricBlockSettings.of(Material.WOOD).build());
 		this.setDefaultState(this.getStateFactory().getDefaultState().with(FACING, Direction.NORTH));
@@ -50,9 +60,13 @@ public class SlopeTestBlock extends Block implements BlockEntityProvider {
 		if (world.isClient || !(world.getBlockEntity(pos) instanceof SlopeTestEntity)) return true;
 		if (player.getStackInHand(hand).getItem() instanceof BlockItem) {
 			Block block = ((BlockItem)player.getStackInHand(hand).getItem()).getBlock();
+			if (block.getDefaultState().isSimpleFullBlock(world, pos)) {
 				SlopeTestEntity be = (SlopeTestEntity) world.getBlockEntity(pos);
+				if (be.getRenderedBlock() == Blocks.AIR) {
 					be.setRenderedBlock(block);
-			player.getStackInHand(hand).decrement(1);
+					if (!player.abilities.creativeMode) player.getStackInHand(hand).decrement(1);
+				}
+			}
 		}
 		return true;
 	}
@@ -62,8 +76,49 @@ public class SlopeTestBlock extends Block implements BlockEntityProvider {
 		return false;
 	}
 
+	@Override
+	public boolean isSimpleFullBlock(BlockState state, BlockView view, BlockPos pos) {
+		return false;
+	}
+
 	@Override
 	public BlockRenderType getRenderType(BlockState state) {
 		return BlockRenderType.INVISIBLE;
 	}
+
+	@Override
+	public void onBlockRemoved(BlockState state, World world, BlockPos pos, BlockState newState, boolean boolean_1) {
+		BlockEntity be = world.getBlockEntity(pos);
+		if (be instanceof SlopeTestEntity) {
+			SlopeTestEntity slope = (SlopeTestEntity)be;
+			if (slope.getRenderedBlock() != Blocks.AIR) {
+				ItemStack stack = new ItemStack(slope.getRenderedBlock());
+				ItemEntity entity = new ItemEntity(world, pos.getX(), pos.getY(), pos.getZ(), stack);
+				world.spawnEntity(entity);
+			}
+		}
+		super.onBlockRemoved(state, world, pos, newState, boolean_1);
+	}
+
+	@Override
+	public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, EntityContext ctx) {
+		Direction dir = state.get(FACING);
+		switch(dir) {
+			case NORTH:
+				return VoxelShapes.union(BASE, NORTH);
+			case SOUTH:
+				return VoxelShapes.union(BASE, SOUTH);
+			case EAST:
+				return VoxelShapes.union(BASE, EAST);
+			case WEST:
+				return VoxelShapes.union(BASE, WEST);
+			default:
+				return VoxelShapes.fullCube();
+		}
+	}
+
+	@Override
+	public VoxelShape getOutlineShape(BlockState state, BlockView view, BlockPos pos, EntityContext ctx) {
+		return getCollisionShape(state, view, pos, ctx);
+	}
 }

src/main/java/io/github/cottonmc/slopetest/block/entity/SlopeTestEntity.java

@@ -2,15 +2,17 @@ package io.github.cottonmc.slopetest.block.entity;
 
 import io.github.cottonmc.slopetest.SlopeTest;
 import net.fabricmc.fabric.api.block.entity.BlockEntityClientSerializable;
+import net.fabricmc.fabric.api.server.PlayerStream;
 import net.minecraft.block.Block;
 import net.minecraft.block.Blocks;
 import net.minecraft.block.entity.BlockEntity;
 import net.minecraft.nbt.CompoundTag;
+import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.util.Identifier;
 import net.minecraft.util.registry.Registry;
 
 public class SlopeTestEntity extends BlockEntity implements BlockEntityClientSerializable {
-	private Block renderedBlock = Blocks.DIAMOND_ORE;
+	private Block renderedBlock = Blocks.AIR;
 
 	public SlopeTestEntity() {
 		super(SlopeTest.SLOPE_ENTITY);
@@ -28,7 +30,7 @@ public class SlopeTestEntity extends BlockEntity implements BlockEntityClientSer
 	@Override
 	public void fromTag(CompoundTag tag) {
 		super.fromTag(tag);
-//		renderedBlock = Registry.BLOCK.get(new Identifier(tag.getString("Block")));
+		renderedBlock = Registry.BLOCK.get(new Identifier(tag.getString("Block")));
 	}
 
 	@Override
@@ -47,4 +49,15 @@ public class SlopeTestEntity extends BlockEntity implements BlockEntityClientSer
 	public CompoundTag toClientTag(CompoundTag tag) {
 		return toTag(tag);
 	}
+
+	@Override
+	public void markDirty() {
+		super.markDirty();
+		if (!this.world.isClient) {
+			for (Object obj : PlayerStream.watching(this).toArray()) {
+				ServerPlayerEntity player = (ServerPlayerEntity) obj;
+				player.networkHandler.sendPacket(this.toUpdatePacket());
+			}
+		}
+	}
 }

src/main/java/io/github/cottonmc/slopetest/block/entity/render/SlopeTestRenderer.java

@@ -30,10 +30,14 @@ public class SlopeTestRenderer extends BlockEntityRenderer<SlopeTestEntity> {
 		renderManager.textureManager.bindTexture(SpriteAtlasTexture.BLOCK_ATLAS_TEX);
 		BlockState state = getWorld().getBlockState(be.getPos());
 		Direction dir = state.get(Properties.HORIZONTAL_FACING);
+		Sprite sprite;
 		if (be.getRenderedBlock() != Blocks.AIR) {
 			BlockState blockDefaultState = be.getRenderedBlock().getDefaultState();
 			BakedModel model = minecraft.getBlockRenderManager().getModel(blockDefaultState);
-			Sprite sprite = model.getSprite();
+			sprite = model.getSprite();
+		} else {
+			sprite = minecraft.getSpriteAtlas().getSprite("minecraft:block/scaffolding_top");
+		}
 		if (sprite != null) {
 			buffer.begin(GL11.GL_QUADS, VertexFormats.POSITION_UV_COLOR);
 			drawSlope(dir, sprite, buffer);
@@ -46,7 +50,6 @@ public class SlopeTestRenderer extends BlockEntityRenderer<SlopeTestEntity> {
 			GlStateManager.disableBlend();
 			GlStateManager.enableAlphaTest();
 		}
-		}
 		buffer.setOffset(0.0d, 0.0d, 0.0d);
 		super.render(be, x, y, z, partialTicks, destroyStage);
 	}