[slightly OT] Wolfenstein 3d in awk

This one crossed my radar today

https://github.com/TheMozg/awk-raycaster

Having seen the Game of Life, a Sudoku solver, and a Lisp processor
in sed, I guess here's the next goal. ;-)

I figured that, even though it's awk rather than sed, there are
enough awk'ward folks on the list who might find it interesting.

-tim