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T
thunderxlight11111
Known Participant
August 14, 2012
Answered

the deffrent between children and visibles objects

  • August 14, 2012
  • 1 reply
  • 2368 views

hi

i have problem here because iam confusing between these things , i know that visible property has to values true and false , and addchild is another thing because when you have two objects

then you put object 2 in object1 and i it will have its own x,y postion depend on that object , and object 1 is child for the main stage , but here is the problem

i.ve opened discuss before this

http://forums.adobe.com/message/4615780#4615780

and when i remove the child , its effect will be there ?? on the stage !! it is like hiding object

? so iam very confuse now , also if removechild doesn,t remove the object from existing then how can i remove it??

thank you and i hope you guys get what imean in my question

please check this link (my old discuss)

http://forums.adobe.com/message/4615780#4615780

thank you

This topic has been closed for replies.
Correct answer kglad

i copied it then i paste in my code but the errors still!

thank you again for your replay


that error is not from the code i suggested.  somewhere in your code you're trying to reference bat1 after it is nulled.

use an if-statement to prevent that.

if(bat1){

}

1 reply

kglad
Community Expert
kgladCommunity Expert
Community Expert
August 14, 2012

if you want to destroy a display object, remove it from the display list, remove all listeners and object references and null the object.  for example,

bat1.parent.removeChild(bat1);  // if bat1 is in display list

bat1.removeEventListener(Event.ENTER_FRAME,f);  // if this listener was previously added

batArray.splice(batArray.indexOf(bat1),1);  // if bat1 is in the array batArray

bat1=null;

T
thunderxlight11111Author
Known Participant
August 14, 2012

thx , i did all these steps but in the bat still exist

look

1- remove it from display list

in the main class

if (hero.hitTestObject(portal3)){

      var map4:BACKGROUND = new BACKGROUND

      if(bat1.stage){

     removeChild(bat1)

     bat1.removeEventListener(Event.ENTER_FRAME, onEnterFrame);

     }

2-remove it from the display list, remove all listeners and object references and null the object.

in the bat1 class

private function onRemovedFromStage(event:Event):void

  {

   removeEventListener(Event.ENTER_FRAME, onEnterFrame);

   removeEventListener(Event.ADDED_TO_STAGE, onAddedToStage);

   removeEventListener(Event.REMOVED_FROM_STAGE, onRemovedFromStage);

   null;

  

   trace("bat removed");

  }

thank you

kglad
Community Expert
kgladCommunity Expert
Community Expert
August 14, 2012

maybe , am gonna delete all the classes and doing all the game in the main because i get enough of errors

thank you alot kgald  but is if(bat1) mean that bat 1 on the stage  and if it is yes , what the deffrent between it andif(bat1.stage) because they look the same they both have to values true and false

thx again


if(bat1) means is bat1 not null.  ie, before you null bat1 the code within the if-statement (your hittest) will execute.  after you null bat1, that code will not execute and that will prevent the 2007 error.

if(bat1.stage) checks if bat1 is in the display list.

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