I'm slowly getting around to building the editor for my game and Engine last. I know very reversed but hey, at least I think it'll give me some ideas on how Editor and Engine work hand in hand. Level Editor to me is just a content manager and the engine loads the level map and decides what to do. Just my thoughts. Alright, nothing big and mind blowing just little steps at a time. I seem to function properly when my mind is taking small progress towards a larger obtainable goal.