Add a basic AI for the players

[akien-mga]

Let the fun begin :)

Since I have no experience with coding AIs at all, I'll probably start by making an AI that tries to get loot efficiently (locate a good spot to hit many destructible blocks and have a higher chance to get power ups, without blowing oneself up).

I'll see about the "aggressive" behaviour later on.

[ObaniGemini]

I think you should work on an AI that can avoid bombs, for she don't kill herself :p