[Tyhm]

Shmaybe what we really need is the Shoot script opened. "Here's how Shoot works behind the scenes, if it was written as a GScript function:
onShoot(x,y,pow,xdir,etc...){
//create the item in question
//probably use Move to move it
//probably something clever with the Move to trigger on a hit
}

So we could copy, edit, and paste our own custom "Fireball ganis" scripted exactly how we like it. The important detail would be that the script's exactly the way it works - if it's a less efficient approximation there's no sense in bothering, we can write our own less efficient approximations, the whole point of drooling over projectiles is they're hardwired to be faster and smarter than our own NPCs.