So i made this for someone. Ended up doing more than i was going to so figured id release it even though i'm 100% positive this is already out there if you look hard enough. But whatever here it is again!
• Will only give item in specific areas which cant be edited at the top of the script.
• If victim and killer has same ip address does not give killer a item.
• If player has aura honorless target does not give killer a item.

It does compile using my core (which is a 7 month old revision of trinity core) However there should be no issues if you are using a more recent revision. If you do get any errors just post them here and ill fix them.
[C++] PvP On Kill System With Anti-Farm - Pastebin.com


Credits Sinistah