Most likely you did not understand what kind of idea I proposed. Simply put, I would like to be able to separate walls, furnitures and other things into special "layers" so that they can be superimposed on each other without fear that they will connect together and thereby create multi-level maps. This idea came to me when I started making this map. This is the head of the gate of the city of dwarves from the game HoMM 5.

P.S. I use google translate

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I see what you need here 🤔 One way to do for now is to use darker ground color variations of the same texture (like the sand here) to show depth differences.