I’ve just finished writing up version 0.04 of my fairly buggy raycaster demonstration, which you can find at https://mike42.me/raycaster/. The source code is also available from there. This one will only work on Windows.

The controls in this version are:

• Movement: Up, Down, Left, Right arrows.
• Return to start: Enter (return).
• Debug mode: Space bar.

The rendering bugs in this version will need a partial re-write to fix, so look out for the 0.05 release.