Rigid Bodies staying within Rigid Bodies: QuickHack

I've repped PressStart before, and this is why.

I'm putting it here in case anyone else was looking for/googles a solution to similar problems.

In newbie/learner's terms, he's literally using Unity's innate functionality to recognize the edges of imported sprites/images and using it to automatically trace the borders on any body - no matter how complex the shape. It's basically nine lines of code that can save you hours of hand labor and can easily be lent and instanced onto any contained area.

 

Using a composite collider does the trick:

 

Many methods; one cat.