item carrier transfer ability

[INCINERATE]

as you guys know, in dota the item carrier critter has this ability, that when you press a hotkey . this causes the critter to automatically seek out your hero and give it the items , then return back to a fixed position at base. Some how it is able to remember exactly which player bought which items, and only give the items to lets say for example "player 3"


I have no ideaaaaaaaaaaaaaaaaaa how that is done. anyone here does?

 

[NoobImbaPro]

this creep isn't so pro to remember who ordered him , player is recorded on event "X Player selects a unit" with condition "selected unit is flying courier"

for the items omg, just do a trigger with event: A unit aquires(or smthing like that) an item and then the item and the player is recorded in an item group

 

[Nherwyziant]

the transfer ability is not an ability, for it is a unit. When you click it, a unit will be created for the clicking player (Normal on wc3) It is how IceFrog detect it. So event will be
A unit is sold
C: Owner equals to this player and unit type is dummy dude
A: Gimme item

EDIT: Same with the item shopping list lol. It is not a tome, for it is a unit also, since tome is not allowed for the crow, it's only for heroes.