Make a copy of the roommesh(from 3DS max), but with VERY simple geometry.
No textures or materials.
Then align it over the rendered picture.
Set the entityalpha to 0, that way it's not visible but still used in collisions.
It will get trickier if you allow the character to walk behind stuff.
No textures or materials.
Then align it over the rendered picture.
Set the entityalpha to 0, that way it's not visible but still used in collisions.
It will get trickier if you allow the character to walk behind stuff.