use the arrow keys to move If you click "SEE INSIDE" you will see a comment on the important blocks, that teach you how to make this map. If you don't feel like learning, you can just remix this map. I don't care. (the map kinda sucks tho) the X and Y variables are just so that you can understand better how it works
you want to set the size of the map before making it. that way you can set it to any size you want I know the up/down doesn't have walking animation, please don't be rude in the comments