Arrow keys A solution I came up with for smooth collision on rough surface. No extra coding or anything, just an outside-the-box solution with TurboWarp's paint editor
The idea was to have an invisible rectangle around the costume that you (theoretically) wouldn't be able to see. TurboWarp's paint editor gives you the opacity option, so I made it with that. (It was set to 3 here so you can [barely] see it, but if you want to fully hide it set the opacity to 0.5 with TurboWarp)