Java Snake Game
时间: 2023-11-23 17:07:41 浏览: 46
以下是一个简单的Java贪吃蛇游戏示例代码,它使用了Java Swing库来构建游戏界面和实现游戏逻辑。该代码包含了基本的贪吃蛇游戏功能,例如控制蛇移动、吃食物、碰撞检测等。您可以根据需要进行修改和扩展。
```java
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 ActionListener, KeyListener {
private static final long serialVersionUID = 1L;
public static final int SCALE = 10;
public static final int WIDTH = 50;
public static final int HEIGHT = 50;
public static final int SPEED = 100;
private ArrayList<Point> snake = new ArrayList<Point>();
private Point food;
private int direction;
private Timer timer;
public SnakeGame() {
setPreferredSize(new Dimension(WIDTH * SCALE, HEIGHT * SCALE));
setBackground(Color.BLACK);
setFocusable(true);
addKeyListener(this);
initGame();
}
private void initGame() {
snake.clear();
snake.add(new Point(WIDTH / 2, HEIGHT / 2));
generateFood();
direction = KeyEvent.VK_UP;
if (timer != null) {
timer.stop();
}
timer = new Timer(SPEED, this);
timer.start();
}
private void generateFood() {
Random rand = new Random();
int x = rand.nextInt(WIDTH);
int y = rand.nextInt(HEIGHT);
food = new Point(x, y);
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
// 画蛇
g.setColor(Color.GREEN);
for (Point p : snake) {
g.fillRect(p.x * SCALE, p.y * SCALE, SCALE, SCALE);
}
// 画食物
g.setColor(Color.RED);
g.fillRect(food.x * SCALE, food.y * SCALE, SCALE, SCALE);
}
private void move() {
// 计算新的头部位置
Point head = snake.get(0);
int x = head.x;
int y = head.y;
switch (direction) {
case KeyEvent.VK_UP:
y--;
break;
case KeyEvent.VK_DOWN:
y++;
break;
case KeyEvent.VK_LEFT:
x--;
break;
case KeyEvent.VK_RIGHT:
x++;
break;
}
head = new Point(x, y);
// 检查是否撞墙或撞自己
if (x < 0 || x >= WIDTH || y < 0 || y >= HEIGHT || snake.contains(head)) {
gameOver();
return;
}
// 检查是否吃到食物
if (head.equals(food)) {
snake.add(0, head);
generateFood();
} else {
snake.add(0, head);
snake.remove(snake.size() - 1);
}
repaint();
}
private void gameOver() {
if (timer != null) {
timer.stop();
}
System.out.println("Game Over");
}
@Override
public void actionPerformed(ActionEvent e) {
move();
}
@Override
public void keyPressed(KeyEvent e) {
switch (e.getKeyCode()) {
case KeyEvent.VK_UP:
case KeyEvent.VK_DOWN:
case KeyEvent.VK_LEFT:
case KeyEvent.VK_RIGHT:
direction = e.getKeyCode();
break;
case KeyEvent.VK_ENTER:
initGame();
break;
}
}
@Override
public void keyTyped(KeyEvent e) {
}
@Override
public void keyReleased(KeyEvent e) {
}
public static void main(String[] args) {
JFrame frame = new JFrame("Snake Game");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setContentPane(new SnakeGame());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
```
该代码使用了一个JPanel作为游戏界面,并在其中绘制了蛇和食物。它还添加了一个键盘监听器,可以根据玩家的按键来控制蛇的移动方向。游戏的主逻辑在`move()`方法中实现,它会计算蛇头的新位置,然后检查是否发生碰撞、是否吃到食物等情况。在每次移动后,都会调用`repaint()`方法来重新绘制界面。