I created a simple hut in Maya, made a simplified UCX_Hut for collision and let UE4 do its magic to create convex hulls out of that. I ended up with 64 hulls, which I fear is a bit too much to be practical. At which point does Complex Collision as Simple trump UCX collision in performance?
At the point when the collision mesh has more triangles than the actual mesh, since Complex as Simple duplicates the entire mesh topology to be used by collision.
Well unfortunately there is no way to tell the poly count of the meshes UE4 generates… I suppose at the end of the day I should break my collision mesh into hulls myself in Maya but I had woefully bad luck in finding a way to do that. Perhaps Max has a method?
Sure there is. A rough estimate is that each collision primitive is a box so 12 triangles per collision primitive. That would make your collision primitives somewhere around 768 polys. Then double it for a worst case scenario