Problem description:
Not necessarily a problem, but more of a design question.

Say I want to emulate 3D, by adding some z coordinate variables and updating obj/mob pixel_z variables to reflect their height. Setting pixel_z is easy. One thing I want to achieve is being able to sort of stack up wall objs to reach a certain height visually. I can icon the walls to look like...

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That way if I displace the wall sitting on top of it vertically, it would appear to sit on top of it. I have a few questions about this.
1. Is there any way for me to set this up so that it appears in the map editor (without tons of editing instances)
2. In regards to gravity, what is an efficient way to do so while keeping the movement fluid? I'm concerned about the constant pull eating up resources.

Thanks!