I fixed the collision, variables are useful when you don't even think they are! I also fixed a bug where you spin around when you press both a and d or w and s, added the arrow keys as a movement, added a sign so that you know that you are paused, and tweaked the movement animation so that it stops immediately when you stop!
Drag the sprites into your backpack (there is a button on the bottom of the screen when you are in the editor. That is the backpack) and drag them out of your backpack and into your game. Make sure to delete the old sprites though. The sprites I changed were the maze, the pause, the player and the ghost.
