cplayerbomb.java

J2ME写的一个潜艇大战游戏!!!!!!!!!

/*
 * CPlayerBoom.java
 *
 * Created on 2006年4月16日, 下午13:40
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */
package gamepacket;

import java.io.*;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
/**
 *
 * @author ztt
 */
public class CPlayerBomb
{

    private int dx,dy;//炸弹坐标
    private int Speed;//炸弹移动速度
    
    private int width,height;//屏幕大小
    
    //炸弹精灵图
    public Sprite spt_playerbomb;
    
    private boolean IsShow;//是否显示炸弹
	
    public CPlayerBomb (int scrWidth,int scrHeight,LayerManager lm)
    {
	Speed=1;//初始速度1
	IsShow=false;
	width=scrWidth;
	height=scrHeight;
		try
		{
		    spt_playerbomb=new Sprite(Image.createImage("/img/playerbomb.png"));
		} catch (IOException ex){}
	
	
	lm.append (spt_playerbomb);
	spt_playerbomb.setVisible (false);//隐藏炸弹
    }

    
    public void SetPoint(int x,int y)
    {
	dx=x;
	dy=y;
    }
    
    
    public void Move()
    {
	if(IsShow==true)
	{dy+=Speed;//向下移动
	 spt_playerbomb.setVisible (true);
	 spt_playerbomb.setPosition (this.dx,this.dy);
	}
	if(dy>height)
	{
	    IsShow=false;
	    spt_playerbomb.setVisible (false);//炸弹不可见
	}
	

    }
    
    
    public void SetShow(boolean show)
    {
	IsShow=show;
    }
    
    public boolean GetShow()
    {
	return IsShow;
    }


    public boolean IsOver(CCpuShip cpuship)
    {
	//碰撞检测
	if(spt_playerbomb.collidesWith (cpuship.spt_cpuship,true))
	{
	    spt_playerbomb.setVisible (false);//炸弹图片不可见
	    this.IsShow=false;//炸弹不可见
	    return true;
	}
	else
	{
	    return false;
	}
    }
}