Man! You people just can't solve anything on your own

Even if a bot would enter an infinite loop we can still record his pos and write a pos history log so the bot program can detect that loop and try something else.

Another (and probably better) solution is that we make/program some assault tactics (excluding combat and defence tactics in this example) so the bot will randomize (using RND) and try various assault tactics like running right, jumping right, kicking, etc. to reach and kill the player rather than just running right in an infinite loop like NeoBeo said. And so what' if bots are not close to real human players... Hey! They're bots. We play against the computer (AI) here. Even Epic was unable to program such bots (talking about UT here). They are computer-controlled players and computer needs no mouse/keyboard to control them. It's just like if you had your brain connected to the computer.

Ow and I have to say that the mask thingie is a good idea. The bot should see only the same amount of tiles as every player sees on the screen.