import java.awt.*;
import java.util.*;
import java.applet.*;
import java.awt.event.*;

class DrObject extends SuperObject
{     //用于體現、打擊
   int     show,AppletWidth,AppletHeight,DrWidth,DrHeight;
   Image   Image1;
   Applet  Game;
   Random  R;
   int i,Fly_Y;
   int ls;//用于增加步長
   int sml;//敵機生命力
   public DrObject(Image Image1,Applet Game,int seed,int AppletWidth,int AppletHeight,int DrWidth,int DrHeight,int i)
   {
      R = new Random(seed);//實例隨機對象

      this.Image1 = Image1;
      this.Game        = Game;
      this.AppletWidth=AppletWidth;
      this.AppletHeight=AppletHeight;
      this.DrWidth=DrWidth;
      this.DrHeight=DrHeight;
      show             = 50;
      ls=0;
      sml=2;
      this.i=i;
      setVisible(false);
   }

   public void updateState()
   {
     if(Math.abs(R.nextInt() % 10000) < show)
         {
            if(visible == false)
               visible = true;
         }
   }

   public void paintObject(Graphics g)
   {
      if(visible == true)
      {
             ls++;
             if(ls%3==0)
              X=X-1;
              if(ls>50)
              ls=0;
              if(X>-6){
                if((Y>Fly_Y)&&(X%6==0))
                 Y=Y-1;
                 else if((Y<Fly_Y)&&(X%6==0))
                  Y=Y+1;
                g.drawImage(Image1,X,Y,Game);
              }
              else
              {
                   visible=false;
                   X=AppletWidth-(i%4+1)*DrWidth;
                   Y=AppletHeight/2+i/4*DrHeight;
                   sml=2;
              }
      }
   }


   public void setFly_Y(int i)
   {
      Fly_Y = i;
   }
   public void setShow(int i)
   {
      show = i;
   }
}