Hi, I want to be able to walk inside a imaginary sphere and facing the center of it. I know I can create the sphere, cast RayCast and inverse normal of the collision point or use Rigidbodies but I want to do it with math but I can't get my head around the math, specially the moving part. To put it in another word, imagine super mario galaxy but inverse, being inside the sphere while still walking on the surface, like mario. I've been searching for this for hours but can't find what I want. Thanks.