Just me piddling around with some 2.5d code again.
I am getting close to a simple way of doing what I want with this ... thinking maybe some kind of combination of this and that old Yoshi remix that I altered in order to create a nice way to allow layers without them being completely flat slices (see my LayerFormer projects). The goal is to make a fast running form of fake 3d 3rd person fixed view game. Moving up and down hills in all directions (mounds and holes to fall in) and some kind of layering system. If it can be made using 2.5d rather than 3d, it should run much faster because there will be less calculations for it to make. The trick is to find a really simplistic method that works efficiently and effectively to create 3d ground to walk upon.