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YujieAki 2 years ago committed by GitHub
parent 1aad4a6153
commit c2903f1712
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<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

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public class Board {
public getAllLegalMoves(){
}
public makeMove(){
}
public undoMove(){
}
public isGameover(){
}
public
}

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public class ChessAI {
private final int MAX_DEPTH = 4;
public Move findBestMove(Board board) {
int bestScore = Integer.MIN_VALUE;
Move bestMove = null;
for (Move move : board.getAllLegalMoves()) {
board.makeMove(move);
int score = minimax(board, MAX_DEPTH, Integer.MIN_VALUE, Integer.MAX_VALUE, false);
board.undoMove();
if (score > bestScore) {
bestScore = score;
bestMove = move;
}
}
return bestMove;
}
private int minimax(Board board, int depth, int alpha, int beta, boolean maximizingPlayer) {
if (depth == 0 || board.isGameOver()) {
return evaluateBoard(board);
}
int score;
if (maximizingPlayer) {
score = Integer.MIN_VALUE;
for (Move move : board.getAllLegalMoves()) {
board.makeMove(move);
score = Math.max(score, minimax(board, depth - 1, alpha, beta, false));
board.undoMove();
alpha = Math.max(alpha, score);
if (beta <= alpha) {
break;
}
}
} else {
score = Integer.MAX_VALUE;
for (Move move : board.getAllLegalMoves()) {
board.makeMove(move);
score = Math.min(score, minimax(board, depth - 1, alpha, beta, true));
board.undoMove();
beta = Math.min(beta, score);
if (beta <= alpha) {
break;
}
}
}
return score;
}
private int evaluateBoard(Board board) {
int score = 0;
for (Piece piece : board.getPieces()) {
if (piece.getColor() == Color.WHITE) {
score += piece.getValue();
} else {
score -= piece.getValue();
}
}
return score;
}
}

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public class Color {
}

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public class Move {
}

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public class Piece {
}