This problem (which I have coined the ‘shuffle’ problem, for lack of a better term)  is not acceptable for the quality of game we are creating. It seems to stem from the objects on the bottom not being processed before the objects on the top necessarily. An ad-hoc solution would be to sort all the objects by their Y-coordinate and work from the bottom up. However, while this works great for things experiencing gravity, it doesn’t help us when we want to work on the horizontal axis.

As a result I’m reworking the physics engine entirely. I think I have found a great resource in Box2D. I have been implementing it and everything is going good so far.

I’ll keep the blog updated as things develop.

-James