An isometric demo from N6

[Marcus]

I've started working on some isometric tests. I'm not even looking at the code I wrote in n6. There are so many ways to represent a map ... Should it actually be multi layered, or just single tiles but of different heights on a ground plane? I guess it depends on what type of game you're doing, but for now I'm going for the latter. Graphics by Kenney: https://opengameart.org/content/isometric-blocks

This is just a first rendering test and some awkward code to extract images from a spritesheet.