tankgameframe.java

自己编写的一个简单的tank游戏

import java.awt.*;
import java.awt.event.*;
import java.util.List;
import java.util.ArrayList;

public class TankGameFrame extends Frame{

	public static final int GAME_W=900;
	public static final int GAME_H=700;
	Tank mytank=new Tank(40,40,this);	

	List<Ball> balls=new ArrayList<Ball>();
	Image offScreenImage=null;
	public void paint(Graphics g)
	{
		
		g.drawString("ballscount:"+balls.size(),30,50);
		
		for(int i=0;i<balls.size();i++)
		{
			Ball b=balls.get(i);
			b.draw(g);
		}
		mytank.draw(g);
		
		
	}

       public void update(Graphics g) {
		if(offScreenImage == null) {
			offScreenImage = this.createImage(GAME_W, GAME_H);
		}
		Graphics gOffScreen = offScreenImage.getGraphics();
		Color c = gOffScreen.getColor();
		gOffScreen.setColor(Color.blue);
		gOffScreen.fillRect(0, 0, GAME_W, GAME_H);
		gOffScreen.setColor(c);
		paint(gOffScreen);
		g.drawImage(offScreenImage, 0, 0, null);
	}
	public void start()
	{
		this.setLocation(40,40);
		this.setSize(GAME_W,GAME_H);
		this.setBackground(Color.blue);
		this.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});	
		this.addKeyListener(new KeyMoniter());
		setVisible(true);
		new Thread(new PaintThread()).start();
		
	}
	
	private class PaintThread implements Runnable
	{
		public void run()
		{
			while(true)
			{
			repaint();
			try{
				Thread.sleep(50);
			}catch(InterruptedException ie){
				ie.printStackTrace();
			}
			}
			
		}
		
	}
	private class KeyMoniter extends KeyAdapter
	{
		public void keyPressed(KeyEvent e)
		{
			mytank.keyPressed(e);
		}
		public void keyReleased(KeyEvent e)
		{
			mytank.keyReleased(e);
		}
		
	}
	public static void main(String[] args)
	{
		TankGameFrame tgf=new TankGameFrame();
		tgf.start();
	}
	
}