ufomissile.java

来自「一款基于j2me技术的手机版游戏——飞机射击」· Java 代码 · 共 33 行

import javax.microedition.lcdui.*;

class UfoMissile extends Sprite{

  public UfoMissile() {
    height = 2 ;
    width  = 2 ;
  }
  int zY[] = new int[3];
  int zX[] = new int[3];
  void doMove(){
    if(this.isAlive){
      y = y + height + 1 ;
    }
  }
  void doMoveT(){
    if(this.isAlive){
      zY[1] = zY[1] + height + 1 ;
      zY[2] = zY[2] + height + 1 ;
      zX[2] = zX[2] + width + 1;
      zY[3] = zY[3] + height + 1 ;
      zX[3] = zX[3] - width - 1;
    }

  }
 void doDraw(Graphics g){
   if(this.isAlive){
     g.setColor(0);
     g.fillArc(x,y,5,5,0,360);
 }
 }
}