I have a plan to put a building into game, I wonder which is the best way to do that, I thinkabout some solutions but doubt about physics performance as well
1. Import a whole building model in blender (rooms, walls, stairs, roof etc), then create a physic mesh to apply to it. my character will move around inside the building with its physic mesh.
2. Create each elements of building in blender (stairs, walls, columns, roof as sperated meshes), import into game, reposition those elements to construct whole building, each element has it own physic mesh
3. Import whole building model then use premitive shape to construct the building's physic. I will assign invisible material on those shapes to hide them later.