使用removeChild（AS3）时出错

问题描述

我正在创建一个pacman风格的游戏。我试图使用removeChild（）删除一个MovieClip的实例。当MovieClip实例box击中MovieClip实例circle时，环将从舞台上移除。

我在下面收到以下错误：
ArgumentError：错误＃2025：提供的DisplayObject必须是调用者的子项。
at flash.display :: DisplayObjectContainer / removeChild（）
在Move / eatCircle（）

  package {
 import flash.display.Sprite; 
 import flash.display.MovieClip; 
 import flash.events.Event; 
 import flash.events.KeyboardEvent; 
 import flash.ui.Keyboard; 
 
 public class Move扩展MovieClip {
 
 var ScoreObjects：Array = new Array（）; //创建ScoreObjects数组
 
 
 private var inertia：int = 8; //摩擦量
 
 var score_field：String; 
 // var point：MovieClip; 
 
 
 //构造函数----------------------------------- --------------------------------- 
 public function Move（）{
 init（） ; 
} 
 
 //函数init --------------------------------- -------------------------------- 
函数init（）：void {
 
 //stage.frameRate=60; 
 var score_field：String =; 
 
 ScoreObjects [0] = new Circle（）; 
 ScoreObjects [0] .amount = 1; //点数
 ScoreObjects [0] .name =circle; 
 
 
 stage.addEventListener（Event.ENTER_FRAME，frameloop）; 
 stage.addEventListener（KeyboardEvent.KEY_DOWN，keyDownEvent）; 
 stage.addEventListener（KeyboardEvent.KEY_UP，keyUpEvent）; 
 
 box.addEventListener（Event.ENTER_FRAME，eatC​​ircle）; 
 wall.addEventListener（Event.ENTER_FRAME，hitWall）; 
 
 stage.addChild（ScoreObjects [0]）; //将Score对象添加到舞台------------------------------ 
 trace（ScoreObjects [0]）; 
 
 ScoreObjects [0] .x = 105; 
 ScoreObjects [0] .y = 233; 
 
} 
 
 // function eatCircle ----------------------------- --------------------------------- 
函数eatCircle（event：Event）：void {
 
 if（box.hitTestObject（ScoreObjects [0]））{
 trace（我吃了圆）; 
 removeChild（ScoreObjects [0]）; 
 // calcScore（）; 
} else {
 trace（我没有吃圆圈）; 
 
 
 
 
 $ b} //课程结束
} //包结束
  {
 stage.removeChild（ScoreObjects [0]）; 
} 
  

I am creating a pacman-style game. I am trying to remove an instance of a MovieClip using removeChild(). When the MovieClip instance "box" hits the MovieClip instance "circle" --circle will be removed from the stage.

I am receiving the following error below:ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller. at flash.display::DisplayObjectContainer/removeChild() at Move/eatCircle()

package {
       import flash.display.Sprite;
       import flash.display.MovieClip;
       import flash.events.Event;
       import flash.events.KeyboardEvent;
       import flash.ui.Keyboard;

       public class Move extends MovieClip {

       var ScoreObjects:Array = new Array(); // creates ScoreObjects array


          private var inertia:int=8; //amount of friction

       var score_field:String;
       //var point:MovieClip;


     // Constructor--------------------------------------------------------------------
          public function Move() {
             init();
          }

     // function init -----------------------------------------------------------------
       function init():void {

             //stage.frameRate=60;
        var score_field:String="";

      ScoreObjects[0] = new Circle();
      ScoreObjects[0].amount = 1; // amount of point
      ScoreObjects[0].name = "circle";


             stage.addEventListener(Event.ENTER_FRAME, frameloop);
             stage.addEventListener(KeyboardEvent.KEY_DOWN,keyDownEvent);
             stage.addEventListener(KeyboardEvent.KEY_UP, keyUpEvent);

        box.addEventListener(Event.ENTER_FRAME, eatCircle);
        wall.addEventListener(Event.ENTER_FRAME, hitWall);

        stage.addChild(ScoreObjects[0]); // add Score Objects to stage ------------------------------
        trace(ScoreObjects[0]);

        ScoreObjects[0].x = 105;
        ScoreObjects[0].y = 233;

          }

     // function eatCircle --------------------------------------------------------------
     function eatCircle(event:Event):void {

      if (box.hitTestObject(ScoreObjects[0])) {
        trace ("I ate the circle");
        removeChild(ScoreObjects[0]);
        //calcScore();
       } else {
        trace ("I didn't eat the circle");
       }
     }



       }// end of class
    }// end of package

解决方案

if((ScoreObjects[0] as Circle)&&((ScoreObjects[0] as Circle).parent!=null))
{
   stage.removeChild(ScoreObjects[0]);
}

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