Added a basic directional system.

I will have to change it to be more efficient.

Right now it uses vector algebra to solve for the direction... turns
out that's memory intensive even though it's only done once for each
bullet.

Also, I should probably be using trig. I just couldn't get it to work
the first time... so second try here I go.
Added trig based direction sensing.

It's far more efficient and still very accurate. There are a few code
inefficiencies and it feels very hard coded. If you can think of a better
way to do this, feel free to modify it.
Merge branch 'master' of github.com:Bacon41/PantheonPrototype