Raycaster finished. Code 4DXE54R3. If any known errors, please leave a comment, and try to help figure out a way to fix it.(port of Petit Computer raycaster).

it does not work. just let the screens in black

Wow. I'll try to fix this, but if you find a way to, just comment.

Have you looked at Calc84 raycaster library? Included in his Spooky Maze program.