简单的贪吃蛇游戏的Java代码示例

很抱歉，由于贪吃蛇游戏的代码比较长，不能在此处完整地呈现。下面是一个简单的贪吃蛇游戏的Java代码示例，供您参考：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Snake extends JFrame implements KeyListener {
    private static final long serialVersionUID = 1L;
    private JPanel contentPane;
    private JLabel[][] map;
    private int[][] mapStatus;
    private int score = 0;
    private int snakeLength = 1;
    private int[] snakeX = new int[100];
    private int[] snakeY = new int[100];
    private int foodX, foodY;
    private Thread moveThread;
    public static void main(String[] args) {
        Snake frame = new Snake();
        frame.setVisible(true);
    }
    public Snake() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 450, 300);
        contentPane = new JPanel();
        contentPane.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(new GridLayout(20, 20));
        map = new JLabel[20][20];
        mapStatus = new int[20][20];
        for (int i = 0; i < 20; i++) {
            for (int j = 0; j < 20; j++) {
                map[i][j] = new JLabel();
                map[i][j].setOpaque(true);
                map[i][j].setBackground(Color.WHITE);
                contentPane.add(map[i][j]);
                mapStatus[i][j] = 0;
            }
        }
        snakeX[0] = 10;
        snakeY[0] = 10;
        map[10][10].setBackground(Color.BLACK);
        mapStatus[10][10] = 1;
        generateFood();
        moveThread = new Thread(new MoveThread());
        moveThread.start();
        addKeyListener(this);
        requestFocus();
    }
    private void generateFood() {
        foodX = (int) (Math.random() * 20);
        foodY = (int) (Math.random() * 20);
        if (mapStatus[foodX][foodY] == 1) {
            generateFood();
        } else {
            map[foodX][foodY].setBackground(Color.RED);
            mapStatus[foodX][foodY] = 2;
        }
    }
    @Override
    public void keyPressed(KeyEvent e) {
        if (e.getKeyCode() == KeyEvent.VK_UP) {
            if (snakeLength == 1 || snakeX[0] != snakeX[1]) {
                snakeX[0] -= 1;
            }
        } else if (e.getKeyCode() == KeyEvent.VK_DOWN) {
            if (snakeLength == 1 || snakeX[0] != snakeX[1]) {
                snakeX[0] += 1;
            }
        } else if (e.getKeyCode() == KeyEvent.VK_LEFT) {
            if (snakeLength == 1 || snakeY[0] != snakeY[1]) {
                snakeY[0] -= 1;
            }
        } else if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
            if (snakeLength == 1 || snakeY[0] != snakeY[1]) {
                snakeY[0] += 1;
            }
        }
    }
    private class MoveThread implements Runnable {
        @Override
        public void run() {
            while (true) {
                try {
                    Thread.sleep(500);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                move();
            }
        }
    }
    private void move() {
        if (snakeX[0] == foodX && snakeY[0] == foodY) {
            score += 10;
            snakeLength++;
            generateFood();
        }
        if (snakeX[0] < 0 || snakeX[0] >= 20 || snakeY[0] < 0 || snakeY[0] >= 20) {
            JOptionPane.showMessageDialog(this, "Game Over! Your score is " + score);
            System.exit(0);
        }
        if (mapStatus[snakeX[0]][snakeY[0]] == 1) {
            JOptionPane.showMessageDialog(this, "Game Over! Your score is " + score);
            System.exit(0);
        }
        for (int i = snakeLength - 1; i > 0; i--) {
            snakeX[i] = snakeX[i - 1];
            snakeY[i] = snakeY[i - 1];
            map[snakeX[i]][snakeY[i]].setBackground(Color.BLACK);
            mapStatus[snakeX[i]][snakeY[i]] = 1;
        }
        map[snakeX[snakeLength - 1]][snakeY[snakeLength - 1]].setBackground(Color.WHITE);
        mapStatus[snakeX[snakeLength - 1]][snakeY[snakeLength - 1]] = 0;
        snakeX[0] += 1;
        map[snakeX[0]][snakeY[0]].setBackground(Color.BLACK);
        mapStatus[snakeX[0]][snakeY[0]] = 1;
    }
    @Override
    public void keyTyped(KeyEvent e) {
    }
    @Override
    public void keyReleased(KeyEvent e) {
    }
}

该示例使用JPanel和JLabel创建游戏地图，并使用数组来跟踪贪吃蛇和食物的位置。键盘监听器监听玩家按键事件，并根据按键事件移动贪吃蛇。通过使用线程来控制贪吃蛇的移动，游戏可以以一定的速度运行。当贪吃蛇吃到食物时，玩家得分并且贪吃蛇的长度增加。如果贪吃蛇碰到游戏边界或碰到自己的身体，则游戏结束。

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