DON'T USE THE ENGINE I JUST TESTED IT AND IT NEEDS FIXING IT WILL WALK THROUGH ANY OBJECTS YOU PUT IN IT'S PATH!!! By the way this still works just don't use the engine if there's something the character has to Jump over. Scratch Cat can move with arrow keys and WASD!
I used Griffpatch's Scratch Cat sprite for this but I made the engine. Feel Free to use my engine!