This isn't really a game - unless you consider it a short "Walking simulator" - it's more of a tech demo.
The engine is a basic Wolfenstein-3D like 3D engine. It has floor and ceiling textures and render reasonably sized and complex rooms at 60 frames-per-second, in a 128x96 viewport.
- Arrow keys = move
- X = toggle map mode
If anyone feels like something out of it, it's fairly easy to get started with (details below).
@freds72 thanks. %1 feels obvious now you've mentioned it :-), much cleaner.
Regarding the walls, I think sspr just truncates the y and height params before using them. Which means the bottom pixel can jump up and down a bit as they cross integer boundaries.
Calculating the top and bottom, explicitly truncating/rounding them, then subtracting to get the height keeps it a lot more stable.
I love the map. To me this is like Castle Wolfenstein with a 3D view.
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