The maximum level dimensions are 24 wide x 20 high. Feel free to replace them with your own. There are 7 images in all and the only requirement is that you do not change the filenames. Clean up and reorganize the code. Due to this, some of the code is kind of kludgy and needs to be reworked.
Flood fill the interior of the map before rendering it.
Although this doesn't really cause any problems, I think it looks bad. Flood filling the empty cells of the map's interior with a different character prior to rendering would avoid the problem altogether. 5.