I don’t think Doom teleported the player to simulate a second floor. I think it was closer to asset swapping what got drawn on screen in the same location.
If you turn the Minimap on you can see where you are in the level. The Minimap was almost a depiction of how the game was really programmed, and the 3D POV was a programming trick to display it for the customer.
Looks like an advanced Doom II map.
Just missing a teleport at the top to simulate a second floor, or a silent téléporter if you’re really fancy.
I don’t think Doom teleported the player to simulate a second floor. I think it was closer to asset swapping what got drawn on screen in the same location.
If you turn the Minimap on you can see where you are in the level. The Minimap was almost a depiction of how the game was really programmed, and the 3D POV was a programming trick to display it for the customer.