wasd to move, arrow keys to change camera rotation, space to jump (my own code for that, as well as vertical rotation). Turbowarp link below for (slightly) faster raycasting and smoother movement and fps. Never do high quality pen! https://turbowarp.org/1198662450
Raycasting tutorials by Griffptatch, and changed of course. Mode7 (the floor) tutorial by Gl00B. Press R to change the resolution (quality) of the game. Automatically set to 6 for scratch users (or mobile users), on Turbowarp you can run it at a res of 2 pretty fast.