用JAVA写一个贪吃蛇的代码

我很乐意为你编写一段贪吃蛇的JAVA代码：
public class SnakeGame {
public static void main(String[] args) {
// 创建一个SnakeGame对象
SnakeGame game = new SnakeGame();
// 设置游戏界面的大小，如果没有参数，默认界面大小为20*20
game.setSize(30, 30);
// 开始游戏
game.startGame();
}
}

相关问题

用java写一个贪吃蛇代码

好的，以下是一个简单的Java贪吃蛇代码：

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

public class Snake extends JFrame implements KeyListener {

    private static final long serialVersionUID = 1L;

    private final int width = 400;
    private final int height = 400;
    private final int size = 20;
    private final int rows = height / size;
    private final int cols = width / size;

    private int snakeX, snakeY;
    private int foodX, foodY;
    private int snakeLength = 2;
    private int direction = KeyEvent.VK_RIGHT;

    private ArrayList<Integer> snakeXList = new ArrayList<Integer>();
    private ArrayList<Integer> snakeYList = new ArrayList<Integer>();

    private Timer timer;

    public Snake() {
        super("Snake");

        setPreferredSize(new Dimension(width, height));
        setResizable(false);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setVisible(true);

        addKeyListener(this);

        startGame();
    }

    public void startGame() {
        snakeX = cols / 2 * size;
        snakeY = rows / 2 * size;

        snakeXList.clear();
        snakeYList.clear();

        for (int i = 0; i < snakeLength; i++) {
            snakeXList.add(snakeX - i * size);
            snakeYList.add(snakeY);
        }

        newFood();

        timer = new Timer(100, new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                moveSnake();
            }
        });

        timer.start();
    }

    public void newFood() {
        foodX = (int) (Math.random() * cols) * size;
        foodY = (int) (Math.random() * rows) * size;
    }

    public void moveSnake() {
        switch (direction) {
            case KeyEvent.VK_LEFT:
                snakeX -= size;
                break;
            case KeyEvent.VK_RIGHT:
                snakeX += size;
                break;
            case KeyEvent.VK_UP:
                snakeY -= size;
                break;
            case KeyEvent.VK_DOWN:
                snakeY += size;
                break;
        }

        snakeXList.add(0, snakeX);
        snakeYList.add(0, snakeY);

        if (snakeX == foodX && snakeY == foodY) {
            newFood();
            snakeLength++;
        } else {
            snakeXList.remove(snakeLength);
            snakeYList.remove(snakeLength);
        }

        if (snakeX < 0 || snakeX >= width || snakeY < 0 || snakeY >= height ||
            snakeXList.indexOf(snakeX) != 0 || snakeYList.indexOf(snakeY) != 0) {
            timer.stop();
            JOptionPane.showMessageDialog(this, "Game Over");
            startGame();
        }

        repaint();
    }

    public void paint(Graphics g) {
        g.setColor(Color.WHITE);
        g.fillRect(0, 0, width, height);

        g.setColor(Color.RED);
        g.fillRect(foodX, foodY, size, size);

        g.setColor(Color.BLACK);
        for (int i = 0; i < snakeLength; i++) {
            g.fillRect(snakeXList.get(i), snakeYList.get(i), size, size);
        }
    }

    public void keyPressed(KeyEvent e) {
        int newDirection = e.getKeyCode();

        if (newDirection == KeyEvent.VK_LEFT && direction != KeyEvent.VK_RIGHT ||
            newDirection == KeyEvent.VK_RIGHT && direction != KeyEvent.VK_LEFT ||
            newDirection == KeyEvent.VK_UP && direction != KeyEvent.VK_DOWN ||
            newDirection == KeyEvent.VK_DOWN && direction != KeyEvent.VK_UP) {
            direction = newDirection;
        }
    }

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

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

}

这个程序使用Java Swing在窗口中绘制游戏界面，使用ArrayList来存储蛇的位置，使用Java Timer来控制蛇的移动。你可以使用键盘上的方向键来控制蛇的方向，吃到食物后蛇的长度会增加。当蛇碰到墙壁或自己时，游戏结束。

用java写一个贪吃蛇的代码

好的，以下是一个简单的Java贪吃蛇游戏的示例代码。由于篇幅限制，我只提供了核心代码，您可以基于这个代码进行修改和拓展。

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.LinkedList;
import java.util.Random;

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

public class SnakeGame extends JPanel implements KeyListener, Runnable {

    private static final long serialVersionUID = 1L;
    private final int BOX_SIZE = 10;
    private final int WIDTH = 600;
    private final int HEIGHT = 400;
    private final int GAME_WIDTH = WIDTH / BOX_SIZE;
    private final int GAME_HEIGHT = HEIGHT / BOX_SIZE;
    private int x, y;
    private int dx, dy;
    private boolean leftDirection = false;
    private boolean rightDirection = true;
    private boolean upDirection = false;
    private boolean downDirection = false;
    private boolean inGame = true;
    private Thread thread;
    private LinkedList<Point> snake = new LinkedList<Point>();
    private Point food;
    private Random random = new Random();

    public SnakeGame() {
        addKeyListener(this);
        setFocusable(true);
        setPreferredSize(new Dimension(WIDTH, HEIGHT));
        initGame();
    }

    private void initGame() {
        x = (GAME_WIDTH / 2) * BOX_SIZE;
        y = (GAME_HEIGHT / 2) * BOX_SIZE;
        dx = BOX_SIZE;
        dy = 0;
        snake.clear();
        snake.add(new Point(x, y));
        generateFood();
        inGame = true;
    }

    private void generateFood() {
        int fx = random.nextInt(GAME_WIDTH) * BOX_SIZE;
        int fy = random.nextInt(GAME_HEIGHT) * BOX_SIZE;
        food = new Point(fx, fy);
    }

    private void move() {
        Point head = snake.getFirst();
        int nx = head.x + dx;
        int ny = head.y + dy;
        if (nx < 0 || nx >= WIDTH || ny < 0 || ny >= HEIGHT) {
            inGame = false;
        } else if (snake.contains(new Point(nx, ny))) {
            inGame = false;
        } else if (nx == food.x && ny == food.y) {
            snake.addFirst(food);
            generateFood();
        } else {
            snake.removeLast();
            snake.addFirst(new Point(nx, ny));
        }
    }

    private void checkCollision() {
        if (!inGame) {
            thread.interrupt();
        }
    }

    private void draw(Graphics g) {
        g.clearRect(0, 0, WIDTH, HEIGHT);
        g.setColor(Color.BLACK);
        snake.forEach(p -> g.fillRect(p.x, p.y, BOX_SIZE, BOX_SIZE));
        g.setColor(Color.RED);
        g.fillRect(food.x, food.y, BOX_SIZE, BOX_SIZE);
    }

    private void gameLoop() {
        while (inGame) {
            move();
            checkCollision();
            repaint();
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
                break;
            }
        }
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        draw(g);
    }

    @Override
    public void keyPressed(KeyEvent e) {
        int key = e.getKeyCode();
        if (key == KeyEvent.VK_LEFT && !rightDirection) {
            leftDirection = true;
            upDirection = false;
            downDirection = false;
            dx = -BOX_SIZE;
            dy = 0;
        } else if (key == KeyEvent.VK_RIGHT && !leftDirection) {
            rightDirection = true;
            upDirection = false;
            downDirection = false;
            dx = BOX_SIZE;
            dy = 0;
        } else if (key == KeyEvent.VK_UP && !downDirection) {
            upDirection = true;
            leftDirection = false;
            rightDirection = false;
            dx = 0;
            dy = -BOX_SIZE;
        } else if (key == KeyEvent.VK_DOWN && !upDirection) {
            downDirection = true;
            leftDirection = false;
            rightDirection = false;
            dx = 0;
            dy = BOX_SIZE;
        }
    }

    @Override
    public void keyReleased(KeyEvent e) {
    }

    @Override
    public void keyTyped(KeyEvent e) {
    }

    @Override
    public void run() {
        gameLoop();
    }

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

    public void start() {
        thread = new Thread(this);
        thread.start();
    }
}

这个代码实现了一个简单的贪吃蛇游戏，使用了Java Swing库来进行游戏界面的绘制和更新。您可以在自己的计算机上运行这个代码，看一下这个示例程序的效果。