Extending cc.Sprite

cocos2d-x JavaScript
#1

Hi,

I’d like to make a class that extends cc.Sprite. Right now, I’m trying to do it as follows:

var ExtendedSprite = cc.Sprite.extend(
{
    ctor:function () {
        this._super();
    },
});

Then I have another class, “Ball,” meant to extend ExtendedSprite:

var Ball = ExtendedSprite.extend(
{
    ctor:function() 
    {
        this.initWithSpriteFrameName("ball_1.png");
    },
});

I’m then trying to create a new instance of Ball as follows:

this._ball = new Ball();

The app always crashes on the new Ball() line without giving me any further information. If I make Ball extend cc.Sprite, it works fine, so I’m clearly doing something wrong when I try to extend it with ExtendedSprite. Does anyone have any pointers for how to do this properly? Any advice is greatly appreciated!

#2

Maybe it will help You. Ship.js from MoonWarrior game example:

var Ship = cc.Sprite.extend({
    ctor:function () {

        // needed for JS-Bindings compatibility
        cc.associateWithNative( this, cc.Sprite );

        //init life
        var shipTexture = cc.TextureCache.getInstance().addImage(s_ship01);
        this.initWithTexture(shipTexture, cc.rect(0, 0, 60, 38));
        this.setTag(this.zOrder);
        this.setPosition(this.appearPosition);
    }
});

and next:

this._ship = new Ship();
#3

Thanks for the response! Unfortunately, that’s not what I’m looking for; extending cc.Sprite once, like they do in that example, works fine. I’m trying to extend cc.Sprite with one class, and then extend that class.