The basic idea is I’d like to make what the player will walk on and through rotatable on a key press. I’m able to make it rotatable on a key press which is fine, but I’d like to build the level out of BSP, generate a mesh, make it movable then make it collide with the player so they can walk on all the surfaces, steps and such. I could really do with some help on the later - making it collidable. I tried generating collision data in the mesh editor, and it didn’t work out. And advice?