jmibo

wait someone probably already suggested this should have checked

it seems like box2d's friction calculation works completely different from godot physics's calculation such that the "rough" field means nothing. if you do need the roughness feature it seems like...

i think i've figured it out: - physics materials have a function [`get_computed_friction`](https://github.com/godotengine/godot/blob/d282e4f0e6b6ebcf3bd6e05cd62f2a8fe1f9a238/scene/resources/physics_material.h#L57-L59) which usually returns the friction value, but when the material is rough this returns the *negative* of...