Well, once it becomes complex enough, it will use random
numbers within attributes to immitate the behavior of insects and
other life forms. right now, the only "need" they have is to eat, so they race around the screen trying to find food.
I've updated my version since to incorporate breeding and farming (they can carry food and seed the ground to produce more food)

the tendancy is that once the population becomes large enough,
(or food becomes scarce enough) the "ants" will flock together in large groups or "colonies" if you will, and even mimick our own societal behavior on a simplistic level.

of course, the older version (when they had a sight radius as opposed to the food being scented) was a lot more complex and showed these tendancies much better, this one should start heading in a similar direction with one major change.
It will be easier for the ants to find food (and each other)
and they will actually compete to reach a piece of food first.
If you want any more explanation, just ask.

If you can figure out why they seem to be repelled by certain pieces of food when they are trying to reach them or why they occasionally freeze and do nothing until they die, please let me know, as it's been bugging me for days...