[Resolved] TextureCache's addImageAsync behavior question

cocos2d-x JavaScript
#1

Hello,

Question about the texture cache please.

As a level initializes, the engine preloads resources using the following:
cc.TextureCache.getInstance().addImageAsync(tx_player, this, this.textureLoadedCallback);

I expected the texture to be available as the callback method was invoked, but its “texture” property is empty until a sprite is created:

textureLoadedCallback:function () {

var tc = cc.TextureCache.getInstance();
console.log(tc.textures); // outputs Object {}

// Debug
var s1 = cc.Sprite.create(tx_player);
this.addChild(s1);
console.log(tc.textures); // Object {img/player_idle0.png: img}
},
@

Is my understanding wrong? I expect the callback method to be called once the texture is made available in the texture cache.

Thanks,
J.

#2

look at this source code

            texture.addEventListener("load", function () {
                that._addImageAsyncCallBack(target, selector);
            });
            texture.src = path;
            this.textures[path.toString()] = texture;

it invokes your callback routine first, then set the hashmap with texture.
so the texture structure is created after you add it.

sorry above. your code should print out the textures

#3

Finally found what my mistake was:
I used the following:
cc.TextureCache.getInstance().addImageAsync(tx_player, this, this.textureLoadedCallback(tx_player));

-> this exectues the textureLoadedCallback since I make a function call isntead of a function definition… Wrapping it with function(){} solved my issues.

My bad… Thanks for your time!