Update: I realized why x-velocity didn't work. Since I made this from Super Ball Adventure, I took out scroll-x, but I forgot to put in a "change x by x-velocity" script. Version 2 will have x-velocity, but probably not wall jumping because I have a strong feeling that wall jumping will cause glitches. The Super Game Engine series is a series that features "engines" for certain types of games. You can use these game engines to make games of your own! If I make a non-1s1s platformer, it'll probably have wall jumping, x-velocity, and more. Enjoy! Features: Wall sensing, normal x-movement, jumping (y-velocity).
