It's there for Everybody's use (see what I did there?), but I would say check the tutorial I linked in my thread page, it might help you a lot more than my source code.
Terraria Community Forums
Sin Costan
Everybody
I looked through it, and gave up. 
Ah well, I'll get better eventually. Right now, I should probably learn how to make my projectile light up.
Ah well, I'll get better eventually. Right now, I should probably learn how to make my projectile light up.