How do I change movement to be tile based?

Also trying to find other ways to tidy up my code but mainly need to fix up movement. I want it to move like a tile but without stopping every tile.

Code Below:

https://www.dropbox.com/s/ss481gzj4ujrxi1/Slip%20Slap%20Snap.c3p?dl=0

Current Stage of Game Below (Use as example of how movement should work):

flippydolphin.itch.io/frost-and-found

I currently want to change the movement system because it's just too buggy!