Error1010: A term is undefined and has no properties

this error has been driving me crazy! debug won't tell me term i'm having trouble with. below code, class defines movement , behavior of these items i'm creating on stage. i'm getting error twice, once avoidme function , other checkcollision function. avoidme makes these items move away movieclip user controls on stage, , checkcollision function checks if movieclip hits of these items , removes them off stage. me!

 

 

package  {           import flash.display.movieclip;           import flash.events.event;           import flash.geom.rectangle;             public class itembehavior extends movieclip           {                     var arandomnumber:number = randomnumber(1,3);                     //rectangle boundaries                     var xlocation:number = 0;                     var ylocation:number = 0;                     var widthofrect:number = 450;                     var heightofrect:number = 450;                     var rectboundary:rectangle = new rectangle(xlocation,ylocation,widthofrect,heightofrect);                     var itemspeed:number = 5;                     var mindistancebetweenitems:number = 20;                       public function itembehavior():void                     {                                //have each item have random position on stage                               this.x = math.round(math.random() * 500) + 20;                               this.y = math.round(math.random() * 500) + 20;                                 //have each item have different size                               this.scalex = scalex * arandomnumber;                               this.scaley = scaley * arandomnumber;                                 //add listener move items away cat                               addeventlistener(event.enter_frame,avoidcat);                                 //add listener remove items stage when hit cat                               addeventlistener(event.enter_frame,checkcollision);                     }                       function randomnumber(min:number, max:number):number                     {                               return math.floor(math.random() * (1 + max - min) + min);                     }                       function avoidcat(event:event):void                     {                               // calculate distance between cat , items                               var distancex:number = movieclip(parent).cat_mc.x - this.x;                               var distancey:number = movieclip(parent).cat_mc.y - this.y;                               var distancexy:number = math.sqrt(distancex*distancex+distancey*distancey);                                 // check if distance small enough                               if (distancexy <= mindistancebetweenitems)                               {                                         // calculate direction between cat , items                                         var currdirection:number = math.atan2(distancey,distancex);                                           // move items opposite direction                                         this.x -=  itemspeed * math.cos(currdirection);                                         this.y -=  itemspeed * math.sin(currdirection);                               }                                 //restrict items in rectangle boundaries                               if (this.x < xlocation)                               {                                         this.x = widthofrect;                               }                                 if (this.x > widthofrect)                               {                                         this.x = xlocation;                               }                                 if (this.y < ylocation)                               {                                         this.y = heightofrect;                               }                                 if (this.y > heightofrect)                               {                                         this.y = ylocation;                               }                     }                       //function check collision , remove item                     function checkcollision(event:event):void                     {                               if (movieclip(parent).cat_mc.hittestobject(this))                               {                                         parent.removechild(this);                                         removeeventlistener(event.enter_frame,checkcollision);                               }                     }           } }  

click file>publish settings>tick "permit debugging".  retest.

 

the problematic line number be  in error message.

 

p.s.  may need use event.added_to_stage event before accessing code references parent.  ie, before adding enterframe listeners.

More discussions in ActionScript 3

adobe