Some time ago I came up with abstracting the control of a tank with an interface called a TankPilot. Classes that implement TankPilot are able to control a tank, whether by reading real input from a player, or by programmatically making decisions. Up til recently, I'd only created the HumanTankPilot implementation.
Last night, on a whim, I decided to create BlindComputerPilot. It's exactly as smart as it sounds: BlindComputerPilot drives in a straight line until he runs into something, then pivots in place for a random amount of time before driving in a straight line again. At other random intervals, he pivots having not run into anything, and at other intervals he fires a shot. Really simple stuff, but fun to watch!
In the Arena Designer area of the game, I've started putting together load/save behavior. Pretty soon I'll have to come up with a UI for choosing an arena.
Any graphic designers out there want to lend some visual creativity?