kalbert312/eod4sdl ? reverse-engineered prompt

Build me a playable retro first person shooter engine based on Wolfenstein 3D, with the same classic feel but running through SDL. It should load the original game data files from the same folder, work with both keyboard and controller, and support windowed and fullscreen play at a few higher resolutions without blurring the pixel art.

I also want the usual game stuff to feel complete, like menus, sound, music, save and load, intro screens, and the different difficulty and level start options from the command line. If it makes sense, keep the extra quality of life features too, like better audio handling, mouse capture in windowed mode, and the wider screen view options.

Please make it build cleanly on desktop, and if you need to check anything in the current docs or source behavior, go ahead and look it up.