point.java

用J2ME 的手机贪吃蛇游戏源代码蛇头不能碰到蛇尾 吃点东西蛇身增长

import java.util.Random;

import javax.microedition.lcdui.Graphics;

public class Point 
{
	public int x , y ;
	Random r = new Random() ;
	
	public Point(Snake s)
	{
		reset(s) ;
	}
	
	public void render(Graphics g)
	{
		g.setColor(0x6BF578) ;
		g.fillArc(x , y , Snake.V , Snake.V , 0 , 360) ;
	}
	
	public void reset(Snake s)   //   保证 我的点 不在蛇身上
	{
		boolean c = true ;
		while(c)
		{
			x = Math.abs(r.nextInt() % (240 - Snake.V)) ;
			y = Math.abs(r.nextInt() % (310 - Snake.V)) ;
			c = s.isHit(x , y) ;
		}
	}
	
	public boolean isHit(int _x , int _y)
	{
		if(Math.abs(x - _x) < Snake.V &&Math.abs(y - _y) < Snake.V)
		{
			return true ;
		}
		else
		{
			return false ;
		}
	}
}