To this date, I haven’t seen any Eclipse games that have something that I can only describe as buildings that occupy real-space.
Generally, when you enter a building, you’re warped to a different map or a different portion of the map. The building doesn’t occupy real-space. Because of this, it gives a sort of Time Lord effect, and the interior of a building is unrealistically larger or smaller than the exterior.
So, my team has decided to attempt making real-space buildings by using the engine’s Event system.
Now, I can understand why I haven’t seen any other Eclipse games doing this, because it’s a pain in the ass to do. But, it’s totally worth it and leaves a pretty cool effect/illusion of making the game world seem that much more believable.