#iterator() cannot be used nested.

[fechy]

Unfortunately, since the last release (1.7.1) I'm having this issue:

Exception in thread "LWJGL Application" com.badlogic.gdx.utils.GdxRuntimeException: #iterator() cannot be used nested.
    at com.badlogic.gdx.utils.Array$ArrayIterator.hasNext(Array.java:541)
    at com.badlogic.ashley.core.Engine.update(Engine.java:175)
    at com.kingmonkey.arkanoid.internal.CustomEngine.update(CustomEngine.java:25)
    at com.kingmonkey.arkanoid.game.controllers.EngineController.update(EngineController.java:41)
    at com.kingmonkey.arkanoid.screens.GameScreen.render(GameScreen.java:187)
    at com.kingmonkey.arkanoid.MainGame.render(MainGame.java:97)
    at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:218)
    at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:123)

This is because this change introduced in 1.7.1 on Engine.java:

-       for(int i=0; i<systems.size; i++){
 -          EntitySystem system = systems.get(i);
 +      for (EntitySystem system : systemManager.getSystems()) {

I'm not entirely sure how this happens, although I know it has to do with postRunnables. This happens when I do a heavy removal of entities and box2d bodies which are done on a postRunnable otherwise Box2d will issue a sigfaul.

I'll try to came up with a better explanation and possible a test case. In the mean time, I'll like you to consider to go back to the previous code if this is not entirely necessary.

[dsaltares]

This is because we re-use an internal iterator to avoid allocations. You can still instantiate a new iterator yourself. Will look into it anyway.

[manuelbua]

I'm also affected by this bug, but i'm currently using the Maven repo with gradle and i'm not sure the best way to update in this case? Is a new release expected to be out soon or should i consider switching to the git version?

[dsaltares]

I can make a patch release later this evening.

[manuelbua]

Thank you much!

[dsaltares]

New release is out http://saltares.com/blog/general/ashley-1-7-2-released/