Datsville bottom and top layers

[Michael Horvath]

Currently, Datsville is split into city blocks. Each block is then split into top and bottom layers. The bottom layer has grass, driveways and other stuff you walk on. The top layer has buildings, trees and other stuff that is above the ground.

I did this because when converting Datsville into 2D video game sprites, you need this separation of layers or else your player character will walk over walls and underneath driveways, for instance.

The problem is that editing the blocks becomes a chore, since you can't edit all the layers at the same time. They are stored in separate files.

Is there an alternate way of using the concept of "layers" that I'm missing? Something in the LDraw specs I'm not aware of?

Thanks!