booty.java

手机RPG游戏

package obj;
import javax.microedition.lcdui.*;
import main.*;

import java.util.Random;


public class Booty extends Bullet{
public  int bootyId;

private  int idnum;//图片的总数，用来产生随机数。
private  int time=0;
private  int n=Cntrl.load.bootyNatality;//执行多少次后出现一个奖品
   public Booty(int xp,int yp,int sw,int sh) {
   super( xp, yp, 0, 0, sw, sh);
   idnum=Cntrl.load.bootyImg.length;
   this.screenW=sw;
   }
   public boolean getAlive(){
     return alive&&xPos>0&&xPos<screenW+(xPos)&&yPos>0&&yPos<screenH;
   }
   public void DrawSelf(Graphics g){
     if(0==time%n){
       bootyId=new Random().nextInt(idnum);
       img=Cntrl.load.bootyImg[bootyId];
       xPos=new Random().nextInt(this.screenW);
       yPos=2;
       time=1;
       this.alive=true;
     }
     if(getAlive())
     { this.bootyMove();
       g.drawImage(img,xPos,yPos,Graphics.LEFT|Graphics.TOP);
     }
     else {time++;}//有一个存在时就不加
 }
   private void bootyMove(){
     ySpeed=bootyId+1;
     //xPos+=xSpeed;
     yPos+=ySpeed;

    }

private void hit(){
   this.alive=false;//如果碰撞成功就消失.
    }








}