i'm making a game and i made a background on paint but it wasnt the right size so my person isnt moving when i do a test and i cant make walkable areas. what is the size its supposed to be so i can change it???
You can choose from a variety of resolutions in the General settings pane.
If the imported room is bigger than the set resolution, it'll scroll.
You should always be able to draw walkable areas though, what exactly doesn't work / what happens if you try? (Make sure you didn't select walkable area 0, this is the eraser.)