Question about crossbows n stuff

[PaperJack]

Hello, I can't figure out a few things:
1. How can I detect when someone (me or NPCs) fire a specific kind of crossbow?
2. How can I detect the position of the arrow or where it does it hit?
3. Is it possible to attach a particle effect to the arrow?
4. Is there a descriptive list of all the functions?

Thanks a lot!

 

[Septa Scarabae]

1. I'm not sure.
2. Doesn't the game already do this?
3. Yes.
4. Not that I'm aware of.

 

[PaperJack]

How, then ?