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qq_24665727
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java小项目,重写实现血量的飞机大战

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下面有图片,方便大家先看界面!
package 飞机大战;

import java.awt.Color;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.LayoutManager;
import java.awt.RenderingHints.Key;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import javax.swing.ImageIcon;
import javax.swing.JPanel;
/**
 * 主类,线程,所有的事物重绘都在这个类
 * @author yan
 *
 */
public class WarUI extends Frame{
	public static final int WIDTH=410;
	public static final int HEIGHT=600;
	public ImageIcon img;
	public ImageIcon img2;
	public static WarUI warui;
	public boolean p=true;
	public static List<Panle> planes = new ArrayList<Panle>();// 敌人飞机容器
	public static List<Bullet> bullets = new ArrayList<Bullet>();//子弹容器 
	public static List<Explode> explodes=new ArrayList<Explode>();//爆炸对象
	public static int score=0;//计分
	
	private Image offScreenImage = null;//用来实现使用双缓冲,画一个缓冲画布
	public  Panle myplane=new Panle(150,500,warui,60,true);
	private Random random=new Random();
	public void lauchFrame() {
		setTitle("飞机大战");
		setBounds(380, 100, WIDTH, HEIGHT);
		// 匿名内部类,短,不涉及将来的扩展
		addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		});
		
		img=new ImageIcon("背景\\back.jpg");//接口,getImage方法返回一个Image对象,repaint方法会调用paint方法
		img2=new ImageIcon("背景\\back2.jpg");//接口,getImage方法返回一个Image对象,repaint方法会调用paint方法
		setResizable(false);
		setVisible(true);
		MyKeyListener mkl=new MyKeyListener();
		this.addKeyListener(mkl);
		new Thread(new PaintThread()).start();
	}

	public static void main(String[] args) {
		warui =new WarUI();
		warui.lauchFrame();
		
	}	
	/**
	 	* 消除闪烁,使用双缓冲
	 	* 线程重画更加均匀,更能控制重化的速度。按键重画不能解决子弹自动飞行的问题;
	    * 每次重绘调用repaint方法时,必定会先调用update然后paint方法
	 */

		public void update(Graphics g) {
			if (offScreenImage == null) {
				offScreenImage = this.createImage(WIDTH, HEIGHT);
			}
			// 拿到图片上的画笔
			Graphics gOffScreen = offScreenImage.getGraphics();
			Color c = gOffScreen.getColor();
			gOffScreen.setColor(Color.blue);
			gOffScreen.fillRect(0, 0, WIDTH,HEIGHT);
			gOffScreen.setColor(c);
			paint(gOffScreen);// 画在背后图片上
			g.drawImage(offScreenImage, 0, 0, null);// 画在屏幕上
		}
		/**
		 * 根据线程里面的repaint方法,不断重画面板,飞机,子弹,爆炸效果,等待都是在里面画出来的
		 */
	public void paint(Graphics g){
		//	根据不同的分数层切换背景图片
		if(score>5000){
			g.drawImage(img2.getImage(), 0, 0, warui);
		}else{
			g.drawImage(img.getImage(), 0, 0, warui);
		}
		if(!myplane.isLive()){
			g.setColor(Color.red);
			Font f = g.getFont();
			g.setFont(new Font("宋体",Font.BOLD,60));
			g.drawString("GAME  OVER!!!", 20, 300);
			g.setFont(f);
			g.drawString("复活按B,重新开始按C!!!", 22, 340);
			p=false;
			
		}
		myplane.draw(g);
		myplane.move();
		
		/**
		 * 添加 / 重绘敌人
		 */
		if (planes.size()<3 ) {
			for (int j = 0; j < 3; j++) {
				Panle p = new Panle(false, warui);
				planes.add(p);
			}
		}
		if (planes.size() != 0) {
			for (int i = 0; i < planes.size(); i++) {
				Panle diren = planes.get(i);
				diren.draw(g);
				
				diren.dmove();
				int r1=random.nextInt(200);
				if(r1==20)
				diren.dfire();
			}
		}
		g.setColor(Color.BLUE);
		g.drawString("子 弹 个  数 :"+bullets.size(), 20,50);
		g.drawString("入侵敌机数:"+planes.size(), 20, 70);
		g.drawString("获得分数:"+score, 20, 90);
		g.drawString("A 开火,P 暂停", 20, 110);
		g.drawString("C重新开始,B 复活:", 20, 130);
		g.setColor(Color.BLACK);
		for(int i=0;i<bullets.size();i++){
			Bullet b1=bullets.get(i);
			b1.draw(g);
			b1.hitplane(planes);
			b1.hitplane(myplane);
			b1.move();
		}
		/**
		 * 创建爆炸对象
		 */
		for (int i = 0; i < explodes.size(); i++) {
			Explode e = explodes.get(i);
			e.draw(g);
		}
		
		/**
		 * 血块添加
		 * 添加飞机吃血块的方法
		 */
		if(myplane.life<30){
			Blood b=new Blood();
			b.draw(g);
			myplane.eat(b);
		}
		
	}
	/**
	 * // 内部类,,方便的访问包装类的方法,不方便公开,
	 * @author yan
	 *
	 */
	private class PaintThread implements Runnable {
		public void run() {
			while (true) {	
				if(p==true){
				 repaint();
				}
				try {
					Thread.sleep(10);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
		}
	}
/**
 * 键盘事件,直接添加在面板上,然后对飞机的X,Y速度进行控制
 * @author yan
 *
 */
	class MyKeyListener extends KeyAdapter {
		public void keyPressed(KeyEvent e) {
			switch (e.getKeyCode()) {
			case 37:	// 左
				myplane.left();
				break;
			case 38:// 上
				myplane.up();
				break;
			case 39:// 右
				myplane.right();
				break;
			case 40:// 下
				myplane.down();
				break;
			case 65://A键
				if(myplane.isLive()){
				myplane.fire();
				}
				break;
			case 66://B建复活,清空子弹
				p=true;
				myplane=new Panle(150,500,warui,60,true);
				bullets.removeAll(bullets);
				break;
			case 67://C建重新开始
				p=true;
				myplane=new Panle(150,500,warui,60,true);
				bullets.removeAll(bullets);
				planes.removeAll(planes);
				break;
			case 80://P键,暂停
				if(p==false){
					p=true;
				}else{
					p=false;
				}
			break;
			}

		}
/**
 * 抬起键时,把速度为0
 */
		public void keyReleased(KeyEvent e) {
			if (e.getKeyCode() == 37 || e.getKeyCode() == 39) {
				myplane.initXc();
			} else if (e.getKeyCode() == 38 || e.getKeyCode() == 40) {
				myplane.initYc();
			}

		}
	}

}

 这只是一个主类,其他完整代码和图片在压缩包里面,需要的话,请下载!

  • 大小: 182.8 KB
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4 楼 qq_24665727 2015-12-26  
451914442 写道
Exception in thread "main" java.lang.UnsupportedClassVersionError: 飞机大战/WarUI : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)




我的jre是1.8的,可能有点不兼容,你用eclipse把jre改成1.5的可以运行,我刚才别人电脑下载了,,,,有几个我没写,飞机与飞机碰撞,还有那个血块的大小太小,导致飞机吃血块有点难,,,然后场景添加少,或者没有动态
3 楼 qq_24665727 2015-12-26  
jdk的版本和class版本不一致,一般是jdk版本过低。检查你安装的jdk版本和当前的jdk版本。如果是安装了Oracle之类的软件,也不用重装,把环境变量重设下就好了。
补充----------
果然是装了Oracle,把最后一个C:\Program Files\Java\jdk1.6.0_16\bin;放最前面就行了,记得要重新打开一个命令行窗


网上找的,,希望有用
2 楼 rex0654335 2015-12-24  
451914442 写道
Exception in thread "main" java.lang.UnsupportedClassVersionError: 飞机大战/WarUI : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

jdk 1.6 运行时选GBK
1 楼 451914442 2015-12-24  
Exception in thread "main" java.lang.UnsupportedClassVersionError: 飞机大战/WarUI : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

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