I'd give the bot a field of vision, and if the player was in its field of vision it would spot you and move towards you.
You could also make a routine for the bot's patrol: he could just wander around looking from left to right, and then turn around and go back.
I say this because you don't want the bot to go in one direction, he might go past the player and just keep on going!
lol
Your sig was erased by a mod because it's larger than 600x120
I didn't know about that rule and it was 659 x 126!
Isn't that a little OTT? I'm gonna have to re-make it because of 65 pixels!!!