I have now played against the bot, and it was pretty entertaining. It was considerably more dangerous than I expected already, and it sounds like there is work on making it smarter, so it could become a rather fun training tool on some levels, or a good way to populate empty servers.

Ye...Bot is very helpful if player havent internet...Bot will working without internet?

Thanks!
Yes it's dangerous sometimes because it shoot fast and always chase you!

I've added some movement rules to JE, so when bot plays JE, it can capture, score and avoid most walls/pipes in that level. This is yet hardcoded in the program, because i don't yet know how to read J2L files with C/C++ (This is my first C/C++ program, so Hello, World!)

Well, yes it works without internet, but if you want to play against the bot you need to play splitscreen, because the bot uses global simulated keypresses. The controls the bot use is WASD for moving and GHJ for jump/fire/run.
The program won't be released anytime soon, because it could be used to cheat (see player positions, always fastfire).

I agree with pretty much everything Hunter said, as an ideal bot. However, writing a learning program like that sounds way more complicated than DJazz's current bot, and for the moment, I enjoy what already exists, but am looking forward to any future advancements.

Well, I agree both with Hunter and Troglobite. It sounds like an ideal bot, but I believe it's easier to give bot original moves instead of trying to make him learn moves from players. Maybe bot should have to break his "main cycle" sometimes, choose random or most fitting "move" (i.e., if opponent is few squares below - use a special move) and perform it.

I don't think that people ever made learning bot for multiplayer game, because it's just hard to filter "good" and "bad" in recorded actions (imagine a player joining the game and just jumping on one point for hours; what will bot learn then =)

Uh...This bot learning all moves on his "eye"! :)
If you teach this bot more and more he can become elite "player"?