this is a very simple list based raycaster (simple for a raycaster anyway) press space/v/b for different maps
all my own code, pls try https://scratch.mit.edu/projects/557363430/ https://scratch.mit.edu/projects/330903340/ https://scratch.mit.edu/projects/522078430/ https://scratch.mit.edu/projects/419310763/ https://scratch.mit.edu/projects/410121302/ and https://scratch.mit.edu/projects/545162104/ https://scratch.mit.edu/projects/538146984/