Anyhow, here is the projectile code that I have. I'm not sure exactly what is needed, so I'll post the entire thing.
var/mob/owner //This var will reference the owner
density = 1
if(!owner) del src //Deletes itself if there is no owner to avoid runtimes
view(6)<<"[M] takes [damage] damage."
projectile.owner = src //Sets the mob as the owner of the projectile
So let's say I'm standing on
and I want the grass under the projectile to turn into