Trying to rig fake harvest..

[Rinpun]

It's not just you. You can usually find out when a unit's casting an ability, or is ordered to do something, but it's a serious pain to find out when they're doing something else (such as when they stop chopping at a tree and decide to start walking back; good luck detecting that easily).

You can turn on a trigger that tells when said unit is going to walk away (by being ordered to move to a unit, a point, or issued an order with no target) :-D

 

[Heptameron]

You can turn on a trigger that tells when said unit is going to walk away (by being ordered to move to a unit, a point, or issued an order with no target) :-D

But I don't think walking back to the town hall is considered an issued order.

 

[Cres]

Unit uses ability- return resouces? couldnt you just use a peon model for the wisp?