I've added the ability to change "height" values along with the way objects work. In the previous screenshot, the west and south walls where two seperate objects( two different files), I've now changed it so the south wall is just the west walls image flipped, it saves work making objects and saves space in the texture atlas. Plus objects now have a "color" value, so it's possible to make multiple objects out of a single texture. All the silly colored walls in the next shot are from a single greyscale image.