那我就我一个简单的版本

好的，以下是一个简单的JAVA贪吃蛇游戏的代码示例，其中使用了JAVA Swing库和基本的面向对象编程思想：

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
import java.util.Random;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;

public class SnakeGame extends JPanel implements KeyListener, ActionListener {
    // 游戏窗口大小
    public static final int WIDTH = 400;
    public static final int HEIGHT = 400;
    // 蛇体方格大小
    public static final int UNIT_SIZE = 20;
    // 游戏速度
    public static final int DELAY = 100;

    // 游戏状态
    private boolean isPlaying = false;
    private boolean isGameOver = false;
    // 游戏得分
    private int score = 0;

    // 蛇体和食物
    private ArrayList<Point> snake;
    private Point food;

    // 随机数生成器
    private Random rand = new Random();

    public SnakeGame() {
        // 初始化游戏窗口
        setPreferredSize(new Dimension(WIDTH, HEIGHT));
        setBackground(Color.BLACK);
        setFocusable(true);
        addKeyListener(this);

        // 初始化蛇体和食物
        snake = new ArrayList<Point>();
        snake.add(new Point(WIDTH / 2, HEIGHT / 2));
        food = new Point(rand.nextInt(WIDTH / UNIT_SIZE) * UNIT_SIZE,
                         rand.nextInt(HEIGHT / UNIT_SIZE) * UNIT_SIZE);

        // 启动游戏计时器
        Timer timer = new Timer(DELAY, this);
        timer.start();
    }

    public void paintComponent(Graphics g) {
        super.paintComponent(g);

        // 绘制蛇体和食物
        g.setColor(Color.YELLOW);
        for (Point p : snake) {
            g.fillRect(p.x, p.y, UNIT_SIZE, UNIT_SIZE);
        }
        g.setColor(Color.RED);
        g.fillRect(food.x, food.y, UNIT_SIZE, UNIT_SIZE);

        // 绘制游戏状态和得分
        if (!isPlaying) {
            g.setColor(Color.WHITE);
            g.drawString("Press SPACE to start", WIDTH / 2 - 60, HEIGHT / 2);
        } else if (isGameOver) {
            g.setColor(Color.WHITE);
            g.drawString("Game Over! Press SPACE to restart", WIDTH / 2 - 90, HEIGHT / 2);
        } else {
            g.setColor(Color.WHITE);
            g.drawString("Score: " + score, 10, 20);
        }
    }

    public void actionPerformed(ActionEvent e) {
        // 更新蛇体位置
        Point head = snake.get(0);
        Point newHead = new Point(head.x, head.y);
        if (direction == Direction.UP) {
            newHead.y -= UNIT_SIZE;
        } else if (direction == Direction.DOWN) {
            newHead.y += UNIT_SIZE;
        } else if (direction == Direction.LEFT) {
            newHead.x -= UNIT_SIZE;
        } else if (direction == Direction.RIGHT) {
            newHead.x += UNIT_SIZE;
        }
        snake.add(0, newHead);
        snake.remove(snake.size() - 1);

        // 检测碰撞和吃食物
        if (newHead.equals(food)) {
            score++;
            food.setLocation(rand.nextInt(WIDTH / UNIT_SIZE) * UNIT_SIZE,
                              rand.nextInt(HEIGHT / UNIT_SIZE) * UNIT_SIZE);
        } else if (newHead.x < 0 || newHead.x >= WIDTH ||
                   newHead.y < 0 || newHead.y >= HEIGHT ||
                   snake.contains(newHead)) {
            isGameOver = true;
        }

        // 重绘游戏场景
        repaint();
    }

    public void keyPressed(KeyEvent e) {
        // 处理方向键输入
        int key = e.getKeyCode();
        if (key == KeyEvent.VK_UP && direction != Direction.DOWN) {
            direction = Direction.UP;
        } else if (key == KeyEvent.VK_DOWN && direction != Direction.UP) {
            direction = Direction.DOWN;
        } else if (key == KeyEvent.VK_LEFT && direction != Direction.RIGHT) {
            direction = Direction.LEFT;
        } else if (key == KeyEvent.VK_RIGHT && direction != Direction.LEFT) {
            direction = Direction.RIGHT;
        }

        // 处理空格键输入
        if (key == KeyEvent.VK_SPACE) {
            if (isGameOver) {
                // 重新开始游戏
                isPlaying = true;
                isGameOver = false;
                score = 0;
                snake.clear();
                snake.add(new Point(WIDTH / 2, HEIGHT / 2));
                food.setLocation(rand.nextInt(WIDTH / UNIT_SIZE) * UNIT_SIZE,
                                  rand.nextInt(HEIGHT / UNIT_SIZE) * UNIT_SIZE);
            } else {
                // 开始或暂停游戏
                isPlaying = !isPlaying;
            }
        }
    }

    public void keyTyped(KeyEvent e) {}
    public void keyReleased(KeyEvent e) {}

    public static void main(String[] args) {
        JFrame frame = new JFrame("Snake Game");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(new SnakeGame());
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

enum Direction {
    UP, DOWN, LEFT, RIGHT
}

这个简单的贪吃蛇游戏使用了JAVA Swing库绘制游戏窗口和场景，使用了面向对象编程思想将游戏逻辑分离为不同的类和方法，并使用了JAVA计时器和键盘监听器实现游戏速度和玩家输入的处理。您可以根据自己的需求和技术水平进行修改和优化。