BUT3ProjetJeuGroupe/javaAPI/fr/iut_fbleau/HexGame/MonteCarloBot.java

package fr.iut_fbleau.HexGame;

import fr.iut_fbleau.GameAPI.*;

import java.util.Random;

public class MonteCarloBot extends AbstractGamePlayer {

    private static final int SIMULATION_COUNT = 1000;

    public MonteCarloBot(Player me) {
        super(me);  // Correct constructor usage
    }

    @Override
    public AbstractPly giveYourMove(IBoard board) {
        HexBoard hb = (HexBoard) board;
        float bestScore = -Float.MAX_VALUE;
        HexPly bestMove = null;

        for (int i = 0; i < hb.getSize(); i++) {
            for (int j = 0; j < hb.getSize(); j++) {
                HexPly move = new HexPly(hb.getCurrentPlayer(), i, j);
                if (hb.isLegal(move)) {
                    hb.doPly(move);
                    float score = monteCarloSimulation(hb);
                    if (score > bestScore) {
                        bestScore = score;
                        bestMove = move;
                    }
                    hb.undoPly();
                }
            }
        }
        return bestMove;
    }

    private float monteCarloSimulation(HexBoard board) {
        RandomBot simBot = new RandomBot(Player.PLAYER1, new Random().nextLong());
        HexBoard simBoard = (HexBoard) board.safeCopy();
        int wins = 0;
        int simulations = 0;

        for (int i = 0; i < SIMULATION_COUNT; i++) {
            while (!simBoard.isGameOver()) {
                AbstractPly move = simBot.giveYourMove(simBoard);
                simBoard.doPly(move);
            }

            if (simBoard.getResult() == Result.WIN) {
                wins++;
            }
            simulations++;
            simBoard = (HexBoard) board.safeCopy(); // Reset the board for the next simulation
        }

        return (float) wins / simulations;
    }
}