Flying in the face of possibly copyright lawsuits, I've added more ripped graphics to the game. In this case, it's the walls, but there is a flaw:
Since Wyvern (where I've got the graphics from) is obviously a better game that mine, it has different images for a wall depending on whether it's a corner section or a straight (amongst others), there is no actual image for a straight top-down wall. And since my game doesn't calculate what kind of section a wall, I'm going to have to think of something else.
Oh, and the other problem is that my "mapsquares" are bigger than those in Wyvern, meaning I'll need to stretch them as well. Why is ripping off other people's graphics never easy? I might as well have drawn them myself.