What is it on AI

[furion]

I just had my project submission done.
My game was a classic game Battle Tank. It had contained AI for the enemies.
That was not good. At least i am not satisfied with it.
Is writing AI (complex) logic(if, else, conditions.....) only or we do have some techniques as well.
If I wanted to start doing things where shall I start.
I would be greatful for helps.

[yaustar]

http://aigamedev.com/
http://www.ai-junkie.com/ai-junkie.html