Java代码：打砖块小游戏 |21xrx.com

Java代码：打砖块小游戏

2023-06-14 15:20:22 深夜i 10 0

Java GUI编程小游戏

最近本人在学习Java GUI编程，为了巩固所学，就尝试编写了一个简单的打砖块小游戏，代码如下：

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Timer;
import java.util.TimerTask;
public class BreakBricksGame extends JFrame implements ActionListener, KeyListener {
  private MyCanvas myCanvas; 
  private Timer timer;
  private TimerTask task;
  private int ballX = 150;  
  private int ballY = 200;  
  private int ballD = 20;  
  private int ballVx = 5; 
  private int ballVy = -5;  
  private int paddleX = 150;  
  private int paddleY = 400;  
  private int paddleWidth = 60;  
  private int paddleHeight = 10;  
  private boolean isRunning = false;
  public BreakBricksGame() {
    super("打砖块小游戏");
    myCanvas = new MyCanvas();
    add(myCanvas, BorderLayout.CENTER);
    JPanel panel = new JPanel();
    JButton buttonStart = new JButton("开始");
    JButton buttonPause = new JButton("暂停");
    JButton buttonQuit = new JButton("退出");
    buttonStart.addActionListener(this);
    buttonPause.addActionListener(this);
    buttonQuit.addActionListener(this);
    panel.add(buttonStart);
    panel.add(buttonPause);
    panel.add(buttonQuit);
    add(panel, BorderLayout.SOUTH);
    addKeyListener(this);
    setFocusable(true);
    setSize(400, 500);
    setLocationRelativeTo(null);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);
  }
  public void actionPerformed(ActionEvent e) {
    String command = e.getActionCommand();
    if (command.equals("开始")) {
      if (!isRunning) {
        timer = new Timer();
        task = new TimerTask() {
          public void run() {
            ballX += ballVx;
            ballY += ballVy;
            if (ballX < 0 || ballX + ballD > myCanvas.getWidth())
              ballVx = -ballVx;
            
            if (ballY < 0 || ballY + ballD > myCanvas.getHeight())
              ballVy = -ballVy;
            
            if (ballY + ballD > paddleY &&
                ballX + ballD > paddleX &&
                ballX < paddleX + paddleWidth)
              ballVy = -ballVy;
            
            myCanvas.repaint();
          }
        };
        timer.schedule(task, 0, 20);
        isRunning = true;
      }
    } else if (command.equals("暂停")) {
      if (isRunning) {
        task.cancel();
        isRunning = false;
      }
    } else if (command.equals("退出")) {
      System.exit(0);
    }
  }
  public void keyPressed(KeyEvent e) {
    int keyCode = e.getKeyCode();
    if (keyCode == KeyEvent.VK_LEFT) {
      if (paddleX > 0)
        paddleX -= 20;
      
    } else if (keyCode == KeyEvent.VK_RIGHT) {
      if (paddleX + paddleWidth < myCanvas.getWidth()) {
        paddleX += 20;
      }
    }
    myCanvas.repaint();
  }
  public void keyReleased(KeyEvent e)
  
  public void keyTyped(KeyEvent e)
  
  class MyCanvas extends Canvas {
    public void paint(Graphics g) {
      g.setColor(Color.BLUE);
      g.fillOval(ballX, ballY, ballD, ballD);
      g.setColor(Color.RED);
      g.fillRect(paddleX, paddleY, paddleWidth, paddleHeight);
    }
  }
  public static void main(String[] args) {
    new BreakBricksGame();
  }
}

运行上面的代码后，可以看到一个简单的打砖块小游戏界面，下面是关于本游戏的一些简单介绍和操作方法：

- 程序启动后，按“开始”按钮会启动小球运动的定时器，小球会自动来回移动，如果碰到左右边界或者下边界会反弹；

- 如果小球与挡板相撞，小球也会反弹；

- 挡板可以使用方向键左右移动，碰到左右边界会停止移动；

- 如果按下“暂停”按钮会暂停定时器，小球和挡板都会停止运动；

- 如果按下“退出”按钮会退出游戏程序。

上一篇: idea打包java可执行jar包

下一篇: 如何选择适合学习Java的电脑配置

评论区

相似文章