JAVA小游戏，适合初学JAVA的新手

package cn.xt.game; import java.awt.Color; import java.awt.Font; import java.awt.Frame; import java.awt.Graphics; import java.awt.Image; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.util.Date; @SuppressWarnings("serial") public class MyGameFrame extends Frame { // 添加背景图片 Image planeImg = GameUtil.getImage("images/icon.png"); Image bg = GameUtil.getImage("images/4.jpg"); Plane plane = new Plane(planeImg,250,250); Shell[] shells = new Shell[50]; Explode boom; Date startTime = new Date(); Date nowTime; int period;//游戏持续时间 // 图形绘制 public void paint(Graphics g) { Color c = g.getColor(); g.drawImage(bg, 0, 0, null); plane.drewSlef(g); for(int i=0;i<shells.length;i++) { shells[i].draw(g); //碰撞检测 boolean peng = shells[i].getRect().intersects(plane.getRect()); if(peng) { plane.live = false; if(boom == null) { boom = new Explode(plane.x, plane.y); nowTime =new Date(); period =(int)(nowTime.getTime() - startTime.getTime())/1000; } boom.draw(g); } //游戏结束 if(!plane.live) { g.setColor(Color.WHITE); Font f = new Font("宋体",Font.BOLD,50); g.setFont(f); g.drawString("游戏时间:"+period+"秒", 100, 270); } } g.setColor(c); } //定义键盘监听内部类 class KeyMonitor extends KeyAdapter{ @Override public void keyPressed(KeyEvent e) { super.keyPressed(e); plane.addDirection(e); } @Override public void keyReleased(KeyEvent e) { super.keyReleased(e); plane.minusDirection(e); } } class PaintThread extends Thread { public void run() { while (true) { repaint();// 重画 try { Thread.sleep(40);// 1s = 1000ms } catch (InterruptedException e) { e.printStackTrace(); } } } } // 初始化窗口 public void launchFrame() { this.setTitle("第一次实践"); this.setVisible(true); this.setSize(Constant.GAME_WIDTH, Constant.GAME_HELGTH); this.setLocation(500, 300); //点击X结束程序 this.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); new PaintThread().start();//启动重画 addKeyListener(new KeyMonitor());//给窗口增加键盘监听 for(int i=0;i<shells.length;i++) { shells[i] = new Shell(); } } public static void main(String[] args) { MyGameFrame f = new MyGameFrame(); f.launchFrame(); } private Image offScreenImage = null; public void update(Graphics g) { if(offScreenImage == null) offScreenImage = this.createImage(Constant.GAME_WIDTH,Constant.GAME_HELGTH);//这是游戏窗口的宽度和高度 Graphics gOff = offScreenImage.getGraphics(); paint(gOff); g.drawImage(offScreenImage, 0, 0, null); } } /* * Color c = g.getColor(); Font f = g.getFont(); g.setColor(Color.BLUE); * * g.drawLine(100, 100, 200, 200);//直线 g.drawRect(100, 100, 300, 300);//矩形 * g.drawOval(100, 100, 300, 300);//椭圆 g.fillRect(100, 100, 20, 20);//实心矩形 * g.setColor(Color.red); g.setFont(new Font("宋体",Font.BOLD, 50)); * g.drawString("zzz", 250, 250);//写字符串 * * g.setColor(c); */