1990's 3D Doom-Like Walls Example

[a740g]

Dang, @a740g, that's super cool and done in very few LOC! Sweet job. The only minor bummer for me is the use of mousemove that causes the .25 sec delay in the Mac world, but dimming that line out and going fullscreen fixes it. Kudos to you. 

Thanks! Yes _MOUSEMOVEX/Y is problematic on Linux as well. Honestly, I did not test on macOS. But I assumed it'd work. I'll investigate what's causing the delay.