missile.java

java编写的一个坦克大战游戏

import java.awt.Color;
import java.awt.Graphics;

public class Missile {

	private int x;
	private int y;
	Tank.Direction dir;
	
	private static final int XSPEED=10;
	private static final int YSPEED=10;
	
	public Missile(int x,int y,Tank.Direction dir)
	{
		this.x=x;
		this.y=y;
		this.dir=dir;
	}
	
	public void draw(Graphics g)
	{
		Color c=g.getColor();
		g.setColor(Color.BLACK);
		g.fillOval(x,y,30,30);
		g.setColor(c);	
		move();
	}
	
	public void move()
	{
		switch(dir)
		{
		   case L:x-=XSPEED;break;
		   case LU:x-=XSPEED;y-=YSPEED;break;
		   case R: x+=XSPEED;break;
		   case RU:x+=XSPEED;y-=YSPEED;break;
		   case U:y-=YSPEED;break;
		   case LD:x-=XSPEED;y+=YSPEED;break;
		   case RD:x+=XSPEED;y+=YSPEED;break;
		   case D:y+=YSPEED;break;
		   case STOP:break;
		}		
	}
	
	
	
	
	
	
}