Loot system/method needed.

I basically need a way to create a "loot" system for my map.

In detail, I need hero units to drop "scrap metal" when killed but not as an item because the killing hero could have a full inventory. Is there any way i could do this without using inventory slots?

I could create a unit on death with the appropriate model but how would i detect that the killing unit has clicked to "pick up the scrap"?

powerup runes

As Jacek said, use a consumable item that has the 'Use on pickup' field checked (like tomes/runes). Then the trigger would use the event to do with 'a unit uses an item' and you can go from there.

PERFECT, works a charm.

Thanks again guys.