Somehow, using HaxeFlixel was way easier. I would rather learn how to compile old Flexlay than do whatever this is. Unfortunately, if I went back to using HaxeFlixel, I'd not be able to use slopes, so I can't do that. I might need some help so I'll add the files to the repository, try fixing it myself and if that fails I hope someone who knows how to use Godot will be able to fix it.

If I do end up having to use HaxeFlixel, I'll still try make the game more like SuperTux Milestone 2 (because the only vote on the poll is a vote for making the game more like SuperTux Milestone 2) which will hopefully be easy enough, although when I did try the first time, backgrounds wouldn't appear? Might have had something to do with the offset of the background and how Tiled saves things or maybe the scroll speed of the background? (Although, that doesn't make sense...)