I've been searching for code on this for months, but I want to be able to have a function that accurately determines whether a collision has occured between two triangles (or even more for multiple collisions) in 2D at any angle. I also want to be able to do this with Quads. Been mainly testing quads though, and so far, everything I've tried has failed or was way off. Does anyone have any code that tests collisions on these polygons in 2D?