用Java写一个自动的贪吃蛇游戏

好的，以下是一个简单的Java自动贪吃蛇游戏示例：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class AutoSnakeGame extends JFrame implements KeyListener, ActionListener {
    private static final long serialVersionUID = 1L;
    private final int WIDTH = 500, HEIGHT = 500;
    private final int UNIT_SIZE = 20;
    private final int GAME_UNITS = (WIDTH * HEIGHT) / UNIT_SIZE;
    private int[] x = new int[GAME_UNITS];
    private int[] y = new int[GAME_UNITS];
    private int bodyParts = 6;
    private int applesEaten;
    private int appleX;
    private int appleY;
    private char direction = 'R';
    private boolean running = false;
    private Timer timer;
    private Random random;

    public AutoSnakeGame() {
        setTitle("Auto Snake Game");
        setSize(WIDTH, HEIGHT);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setResizable(false);
        setLocationRelativeTo(null);

        random = new Random();
        timer = new Timer(100, this);

        addKeyListener(this);
        setFocusable(true);
        setFocusTraversalKeysEnabled(false);

        startGame();
    }

    public void startGame() {
        newApple();
        running = true;
        timer.start();
    }

    public void paint(Graphics g) {
        // Draw border
        g.setColor(Color.gray);
        g.drawRect(0, 0, WIDTH, HEIGHT);

        // Draw apple
        g.setColor(Color.red);
        g.fillOval(appleX, appleY, UNIT_SIZE, UNIT_SIZE);

        // Draw snake
        for (int i = 0; i < bodyParts; i++) {
            if (i == 0) {
                g.setColor(Color.green);
                g.fillRect(x[i], y[i], UNIT_SIZE, UNIT_SIZE);
            } else {
                g.setColor(new Color(45, 180, 0));
                g.fillRect(x[i], y[i], UNIT_SIZE, UNIT_SIZE);
            }
        }
    }

    public void move() {
        for (int i = bodyParts; i > 0; i--) {
            x[i] = x[i - 1];
            y[i] = y[i - 1];
        }

        switch (direction) {
            case 'U':
                y[0] = y[0] - UNIT_SIZE;
                break;
            case 'D':
                y[0] = y[0] + UNIT_SIZE;
                break;
            case 'L':
                x[0] = x[0] - UNIT_SIZE;
                break;
            case 'R':
                x[0] = x[0] + UNIT_SIZE;
                break;
        }
    }

    public void checkApple() {
        if (x[0] == appleX && y[0] == appleY) {
            bodyParts++;
            applesEaten++;
            newApple();
        }
    }

    public void checkCollisions() {
        // Check if head collides with body
        for (int i = bodyParts; i > 0; i--) {
            if (x[0] == x[i] && y[0] == y[i]) {
                running = false;
            }
        }

        // Check if head touches left border
        if (x[0] < 0) {
            running = false;
        }

        // Check if head touches right border
        if (x[0] > WIDTH) {
            running = false;
        }

        // Check if head touches top border
        if (y[0] < 0) {
            running = false;
        }

        // Check if head touches bottom border
        if (y[0] > HEIGHT) {
            running = false;
        }

        if (!running) {
            timer.stop();
        }
    }

    public void newApple() {
        appleX = random.nextInt((int) (WIDTH / UNIT_SIZE)) * UNIT_SIZE;
        appleY = random.nextInt((int) (HEIGHT / UNIT_SIZE)) * UNIT_SIZE;
    }

    public void actionPerformed(ActionEvent e) {
        if (running) {
            move();
            checkApple();
            checkCollisions();
        }

        repaint();
    }

    public void keyPressed(KeyEvent e) {
        switch (e.getKeyCode()) {
            case KeyEvent.VK_LEFT:
                if (direction != 'R') {
                    direction = 'L';
                }
                break;
            case KeyEvent.VK_RIGHT:
                if (direction != 'L') {
                    direction = 'R';
                }
                break;
            case KeyEvent.VK_UP:
                if (direction != 'D') {
                    direction = 'U';
                }
                break;
            case KeyEvent.VK_DOWN:
                if (direction != 'U') {
                    direction = 'D';
                }
                break;
        }
    }

    public void keyReleased(KeyEvent e) {
    }

    public void keyTyped(KeyEvent e) {
    }

    public static void main(String[] args) {
        new AutoSnakeGame();
    }
}

这个自动贪吃蛇游戏可以使用方向键控制方向，可以自动吃苹果并增加身体长度。你可以根据需要进行修改和扩展。