Okay, this is what I need. Only rooms and corridors connected from left to right are shown. The objects inside will be simple boxes or flats, along with sprites for some objects or characters.
In principle, the character will not move to the background (although perhaps for some cinematic), and there will be no jumps either (it is not a platform game) it is quite linear in this sense.
But I want to use 3D objects to be able to position each object spatially in the room and thus be able to move the camera up, down, inside, outside, and have a natural paralax.
