Starling Forum

1. 

   ArticGhost
   

   Senior Bird
   Joined: Jan '15
   Posts: 92

   

   ArticGhost

   Senior Bird
   Joined: Jan '15
   Posts: 92

   Hey!

   I'm trying to pool an AnimationSequence view objects. Ones creating new object to the pool, only one object (the last that was created) is actually having the view. It's like it's overriding the view of the others.

   So I found out that I need to clone the view of each one, but couldn't understand how.

   Here's what I'm doing:

   Creating the pool object:

   blockPool = new Box2DObjectPool(Blocker, { width:50,height:50, myState:this, view:new AnimationSequence(main.assetManager.getTextureAtlas("trees"), ["tree1", "tree2", "tree3", "tree4"], "tree1") } );
   addPoolObject(blockPool);
   blockPool.initializePool();

   Buidling some objects:

   private function createBlockers():void
   {
     var b:Blocker;
     for (var i:uint = 0; i < 10; i++) b = blockPool.get( { x:100, y:200*i } ).data;
   }

   Here I'm trying to clone the view, but getting an error:

   override public function handleArtReady(citrusArt:ICitrusArt):void
   	{
   		view = AnimationSequence(view).clone();
   		super.handleArtReady(citrusArt);
   	}

   And this is the error I'm getting:

   TypeError: Error #1009: Cannot access a property or method of a null object reference.
   	at citrus.view.starlingview::AnimationSequence/destroy()[C:\Users\Aymeric\Workspace\Flash\Libraries\Citrus-Engine\src\citrus\view\starlingview\AnimationSequence.as:172]
   	at citrus.view.starlingview::StarlingArt/destroy()[C:\Users\Aymeric\Workspace\Flash\Libraries\Citrus-Engine\src\citrus\view\starlingview\StarlingArt.as:143]
   	at citrus.view.starlingview::StarlingArt/set view()[C:\Users\Aymeric\Workspace\Flash\Libraries\Citrus-Engine\src\citrus\view\starlingview\StarlingArt.as:246]
   	at citrus.view.starlingview::StarlingArt/update()[C:\Users\Aymeric\Workspace\Flash\Libraries\Citrus-Engine\src\citrus\view\starlingview\StarlingArt.as:450]
   	at citrus.objects::Box2DObjectPool/_dispose()[C:\Users\Aymeric\Workspace\Flash\Libraries\Citrus-Engine\src\citrus\objects\Box2DObjectPool.as:85]
   	at citrus.datastructures::PoolObject/increasePoolSize()[C:\Users\Aymeric\Workspace\Flash\Libraries\Citrus-Engine\src\citrus\datastructures\PoolObject.as:110]
   	at citrus.datastructures::PoolObject/get()[C:\Users\Aymeric\Workspace\Flash\Libraries\Citrus-Engine\src\citrus\datastructures\PoolObject.as:136]

   Posted 7 months ago #
2. 

   gsynuh
   

   Citrus Jedi
   Joined: Nov '12
   Posts: 2,686

   

   gsynuh

   Citrus Jedi
   Joined: Nov '12
   Posts: 2,686

   Hi ArticGhost,

   Yeah the default params for a pool is an object that is sent to all created objects in the pool but textures of view will not work as they end up shared. You could however set the view as clones of an original AnimationSequence when you get the objects, OR even use the blockPool.onCreate Signal, through that is dispatched a Blocker as the first argument and a second argument with params (default params + whatever params passed through get).

   private var anims:AnimationSequence = new AnimationSequence(main.assetManager.getTextureAtlas("trees"), ["tree1", "tree2", "tree3", "tree4"], "tree1");
    
   //init
   blockPool = new Box2DObjectPool(Blocker, { width:50,height:50, myState:this } );
   addPoolObject(blockPool);
   blockPool.initializePool();
    
   private function createBlockers():void
   {
     var b:Blocker;
     for (var i:uint = 0; i < 10; i++) b = blockPool.get( { x:100, y:200*i,view: anims.clone() } ).data;
   }

   By the way if you're working with CE 3.2 (src version) each object now has a _parentScene so each object has a reference to its scene/state (because I see you pass myState:this in the params.)

   other solution :

   private var anims:AnimationSequence = new AnimationSequence(main.assetManager.getTextureAtlas("trees"), ["tree1", "tree2", "tree3", "tree4"], "tree1");
    
   //init
   blockPool = new Box2DObjectPool(Blocker, { width:50,height:50, myState:this } );
   blockPool.onCreate.add(blockerCreated);
   addPoolObject(blockPool);
   blockPool.initializePool();
    
   private function createBlockers():void
   {
   var b:Blocker;
     for (var i:uint = 0; i < 10; i++) b = blockPool.get( { x:100, y:200*i } ).data;
   }
    
   private function blockerCreated(blocker:Blocker,params:Object = null):void {
   blocker.view = anims.clone();
   }

   Posted 7 months ago #
3. 

   ArticGhost
   

   Senior Bird
   Joined: Jan '15
   Posts: 92

   

   ArticGhost

   Senior Bird
   Joined: Jan '15
   Posts: 92

   Just what I was needed! Thanks a lot.
   Unfortunately I'm not using the latest version of CE, and that's why I have to send state reference to each object. Thanks for the tip, I will definitely use it for my next upcoming projects.

   Posted 7 months ago #

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