弹珠小程序

最新推荐文章于 2021-03-09 18:29:31 发布

SUN_DRAGON

最新推荐文章于 2021-03-09 18:29:31 发布

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分类专栏： java

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本文详细介绍了如何使用Java语言实现经典弹珠游戏，包括游戏界面、物理碰撞检测、玩家控制等功能。

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弹珠小程序

import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.event.KeyAdapter.*;
import java.awt.event.WindowAdapter.*;

public class PinBall
{
	private final int WIDTH = 300;
	private final int HEIGHT = 400;
	private final int RACKET_Y = 340;
	private final int RACKET_HEIGHT = 20;
	private final int RACKET_WIDTH = 60;
	private final int BALL_SIZE = 16;
	private Frame frame = new Frame("ball game");
	Random rand = new Random();
	private int ySpeed = 10;
	private double xyRate = rand.nextDouble() - 0.5;
	private double xSpeed = (int)(ySpeed * xyRate *2);
	private int ballX = rand.nextInt(200) + 20;
	private int ballY = rand.nextInt(10) + 20;
	private int racketX = rand.nextInt(200);
	private MyCanvas tableArea = new MyCanvas();
	private String shape = "";
	javax.swing.Timer  timer;
	private boolean isLose = false;
	class MyCanvas extends Canvas
	{
		public void paint(Graphics g)
		{
			if(isLose)
			{
				g.setColor(new Color(255, 0, 0));
				g.setFont(new Font("Times", Font.BOLD, 30));
				g.drawString("game over", 50, 200);
			}
			else
			{
				g.setColor(new Color(240, 240, 80));
				g.fillOval(ballX, ballY, BALL_SIZE, BALL_SIZE);
				g.setColor(new Color(80, 80, 200));
				g.fillRect(racketX, RACKET_Y, RACKET_WIDTH, RACKET_HEIGHT);
			}
		}
	}
	public void init()
	{
		WindowAdapter windowAdapter = new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		};
		tableArea.setPreferredSize(new Dimension(WIDTH, HEIGHT));
		frame.add(tableArea);
		frame.addWindowListener(windowAdapter);
		KeyAdapter keyProcessor = new KeyAdapter()
		{
			public void keyPressed(KeyEvent ke)
			{
				if(ke.getKeyCode() == KeyEvent.VK_LEFT)
				{
					if(racketX > 0)
						racketX -= 10;
				}
				if(ke.getKeyCode() == KeyEvent.VK_RIGHT)
				{
					if(racketX < WIDTH - RACKET_WIDTH)
						racketX += 10;
				}
			}
		};
		frame.addKeyListener(keyProcessor);
		tableArea.addKeyListener(keyProcessor);
		ActionListener taskPerformer = new ActionListener()
		{
			public void actionPerformed(ActionEvent evt)
			{
				if(ballX <= 0 || ballX >= WIDTH - BALL_SIZE)
				{
					xSpeed = -xSpeed;
				}
				else if(ballY >= RACKET_Y - BALL_SIZE && 
					(ballX < racketX || ballX > racketX + RACKET_WIDTH))
				{
					timer.stop();
					isLose = true;
					tableArea.repaint();
				}
				else if(ballY <= 0 || (ballY >= RACKET_Y - BALL_SIZE && 
					ballX > racketX && ballX <= racketX + RACKET_WIDTH))
				{
					ySpeed = -ySpeed;
				}
				ballY += ySpeed;
				ballX += xSpeed;
				tableArea.repaint();
			}
		};
		timer = new javax.swing.Timer(100, taskPerformer);
		timer.start();
		frame.pack();
		frame.setVisible(true);
	}
	public static void main(String[] args)
	{
		new PinBall().init();
	}
}