java游戏代码简单

下面是一个简单的 Java 游戏代码示例，它实现了经典的“打砖块”游戏。

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class BrickBreaker extends JPanel implements KeyListener, Runnable {
    private int ballX = 160, ballY = 218;
    private int ballXdir = -1, ballYdir = -2;
    private int paddleX = 150;
    private boolean[] keys = new boolean[120];
    private boolean playing = true;
    private int score = 0;

    public BrickBreaker() {
        JFrame frame = new JFrame("Brick Breaker");
        frame.setSize(300, 400);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
        frame.add(this);
        frame.addKeyListener(this);
        Thread thread = new Thread(this);
        thread.start();
    }

    public void paint(Graphics g) {
        // 绘制球
        g.setColor(Color.RED);
        g.fillOval(ballX, ballY, 20, 20);

        // 绘制挡板
        g.setColor(Color.BLUE);
        g.fillRect(paddleX, 350, 60, 10);

        // 绘制得分
        g.setColor(Color.BLACK);
        g.drawString("Score: " + score, 10, 20);
    }

    public void run() {
        while (playing) {
            // 更新球的位置
            ballX += ballXdir;
            ballY += ballYdir;

            // 碰到左右边界时反弹
            if (ballX < 0 || ballX > 280) {
                ballXdir = -ballXdir;
            }

            // 碰到上边界时反弹
            if (ballY < 0) {
                ballYdir = -ballYdir;
            }

            // 碰到挡板时反弹
            if (ballY > 340 && ballX > paddleX && ballX < paddleX + 60) {
                ballYdir = -ballYdir;
                score++;
            }

            // 球掉落到底部，游戏结束
            if (ballY > 380) {
                playing = false;
            }

            // 移动挡板
            if (keys[KeyEvent.VK_LEFT] && paddleX > 0) {
                paddleX -= 5;
            }
            if (keys[KeyEvent.VK_RIGHT] && paddleX < 240) {
                paddleX += 5;
            }

            // 重绘画面
            repaint();

            // 等待一段时间
            try {
                Thread.sleep(10);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        // 游戏结束，显示最终得分
        Graphics g = getGraphics();
        g.setColor(Color.RED);
        g.drawString("Game Over! Your score is " + score, 80, 200);
    }

    public void keyPressed(KeyEvent e) {
        keys[e.getKeyCode()] = true;
    }

    public void keyReleased(KeyEvent e) {
        keys[e.getKeyCode()] = false;
    }

    public void keyTyped(KeyEvent e) {}

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

这段代码使用 Java 的图形界面库 Swing 实现了一个简单的“打砖块”游戏。你可以运行这个程序并使用左右箭头键控制挡板移动，防止球掉落到底部。