The Geometry3D class in #godotengine has some really useful utility functions. They even get a little wild: There's one which can convert a mesh into a set of tetrahedrons. I can only think of one gamedev relevant use for that: "destroy" an object by replacing it with tetrahedral rigid bodies. (Which would still be pretty complex, but at least the geometry conversion is provided.)
https://docs.godotengine.org/en/stable/classes/class_geometry3d.html#class-geometry3d-method-tetrahedralize-delaunay