Othello/Rapport/NegamaxPlayer.java

28 lines
850 B
Java

public Pair<Point, Point> play(State game) {
int bestValue = Integer.MIN_VALUE;
Pair<Point, Point> bestMove = null;
for(Pair<Point, Point> move : game.getMove(game.getCurrentPlayer())) {
State nextState = game.play(move);
int value = -negamax(nextState, this.depth);
if (value > bestValue) {
bestValue = value;
bestMove = move;
}
}
return bestMove;
}
private int negamax(State state, int depth) {
if(depth == 0 || state.isOver()) {
return evaluate(state);
} else{
int m = Integer.MIN_VALUE;
for (Pair<Point, Point> move : state.getMove(state.getCurrentPlayer())) {
State nextState = state.play(move);
complexity++;
m= Math.max(m,-negamax(nextState,depth-1));
}
return m;
}
}