extending sprite and implementing interface results in class that does not call super constructor

[Paul Pepper]

I have create a class with the following definition:

class EntityView extends Sprite, implements IPoolable
{
....
}

This work correctly when targetting cpp, and flash, but for js I get run-time errors such as:

Uncaught TypeError: Cannot read property 'length' of null NMERTS.js:983
jeash.display.DisplayObjectContainer.$extend.jeashAddToStage NMERTS.js:983
jeash.display.DisplayObjectContainer.$extend.addChild NMERTS.js:976
com.asliceofcrazypie.rts.engine.nmebaseview.EngineView.$extend.getEntityFromPool NMERTS.js:5469
com.asliceofcrazypie.rts.engine.nmebaseview.EngineView.$extend.update NMERTS.js:5362
com.asliceofcrazypie.rts.engine.controller.EngineController.update NMERTS.js:3149
com.asliceofcrazypie.rts.Main.$extend.onEnterFrame NMERTS.js:2983
js.Boot.__init.Function.$bind.f NMERTS.js:12767
jeash.events.Listener.dispatchEvent NMERTS.js:11627
jeash.events.EventDispatcher.dispatchEvent NMERTS.js:327
jeash.display.DisplayObject.$extend.jeashDispatchEvent NMERTS.js:709
jeash.display.DisplayObject.$extend.dispatchEvent NMERTS.js:712
jeash.display.DisplayObjectContainer.$extend.jeashBroadcast NMERTS.js:893
jeash.display.DisplayObjectContainer.$extend.jeashBroadcast NMERTS.js:891
jeash.display.DisplayObjectContainer.$extend.jeashBroadcast NMERTS.js:891
jeash.display.Stage.$extend.jeashStageRender NMERTS.js:11478
js.Boot.__init.Function.$bind.f NMERTS.js:12767

I have looked at the generated source code, and the constructor looks like this:

com.asliceofcrazypie.rts.engine.nmebaseview.EntityView = function() { }

When I change it to this:

com.asliceofcrazypie.rts.engine.nmebaseview.EntityView = function() { jeash.display.Sprite.call(this); }

It functioned correctly again.

I have found that no matter what I put in the constructor, whether I add arguments, put other statements, etc, I always end up with an empty constructor (as above)

[Paul Pepper (pm-pepper)]

HAving considered this bug somewhat, it occurs to me that this could be an issue with the haxe js target, rather than jeash itself. In which case, I apologise.

[Niel Drummond (niel-drummond)]

have you managed to reproduce this on the release version of haxe ?

[Paul Pepper (pm-pepper)]

Yes, i probably should have specified this is using the latest realease of haxe/nme, so versions are:

Haxe [2.09]
Neko [1.8.2]
NME [3.3.3]
HXCPP [2.09.3]

[Niel Drummond (niel-drummond)]

This kind of error happens when you use a static initializer, e.g. you instantiate a Sprite in a static variable, or if you do not call super() early enough in the constructor to an extended DisplayObjectContainer.