Thanks for this wonderful tutorial. I am running into a strange issue though.
I am creating a tiled map for a game with 20px by 20px tiles. When I place them with drawBitmap using X and Y's that are intervals of 20 I am getting overlapping tiles. Not by much but it is cutting the tiles short slightly.
Am I misunderstanding how the drawBitmap is working? or is there some scaling happening to the tiles that I need to know about.