You could either make predefined animations (in your 3D modeller) using bones.
OR
Use some sort of single surface system to construct and deconstruct your buildings.
Don't forget that in your lego system that each block/brick will be a surface (as well as a model). Many surfaces will grind your game to a halt.
OR
Use some sort of single surface system to construct and deconstruct your buildings.
Don't forget that in your lego system that each block/brick will be a surface (as well as a model). Many surfaces will grind your game to a halt.