Target

[Quauhtli]

If you make three units attack only one other of those units and you make this seperated by using air / ancient / structure , do you also need to add Ground to all of them? Or something else? Because it doesn't work for me (at least the group that kills ancient can't attack them.

 

[FhelZone]

Depends on your setting.
It is in your unit I think.
Remove the field targeted as "Ground"

 

[Quauhtli]

The First one has Targeted as Ancient and Targets Allowed Structure, Item (they also are allowed to destroy items). The second one has Targeted as Air and Targets Allowed Ancient, Item. The Third one has Targeted as Structure and Targets Allowed AIr.

So..

 

[C0mput3r]

A different solution

Ok, ive never gotten into the classification fields (much). So why dont you do it with triggers? It should be really easy with triggers.

Say you dont want knights to attack footmen. See Below

Untitled Trigger 001
    Events
        Unit - A unit Is attacked
    Conditions
        And - All (Conditions) are true
            Conditions
                (Unit-type of (Attacked unit)) Equal to Footman
                (Unit-type of (Attacking unit)) Not equal to Knight
    Actions
        Unit - Order (Attacking unit) to Stop

Edit: Um i think both would work. Warcraft Triggers are done with very little delay 0.0025?

 

[Quauhtli]

That will still not do something because people will still have done little damage which is already enough... The third one has 1 hp. So if the first one attacks the third one which is not what he should do, the third one dies anyway, it's to late to stop.

EDIT: Perhaps with Is Issued An Order To Attack ?
So does this work then?

Attack
    Events
        Unit - A unit Is issued an order targeting an object
    Conditions
    Actions
        If (All Conditions are True) then do (Then Actions) else do (Else Actions)
            If - Conditions
                (Unit-type of (Triggering unit)) Equal to Seeker
                (Unit-type of (Target unit of issued order)) Equal to Prisoner
            Then - Actions
                Unit - Order (Triggering unit) to Stop
                Game - Display to (All players) for 1.00 seconds the text: Note: Seekers can n...
            Else - Actions
        If (All Conditions are True) then do (Then Actions) else do (Else Actions)
            If - Conditions
                (Unit-type of (Triggering unit)) Equal to Prisoner
                (Unit-type of (Target unit of issued order)) Equal to Prisoner
            Then - Actions
                Unit - Order (Triggering unit) to Stop
                Game - Display to (All players) for 1.00 seconds the text: Note: Prisoners can...
            Else - Actions
        If (All Conditions are True) then do (Then Actions) else do (Else Actions)
            If - Conditions
                (Unit-type of (Triggering unit)) Equal to Prisoner
                (Unit-type of (Target unit of issued order)) Equal to Hider
            Then - Actions
                Unit - Order (Triggering unit) to Stop
                Game - Display to (All players) for 1.00 seconds the text: Note: Prisoners can...
            Else - Actions

 

[C0mput3r]

Im guessing it would work. However, if it's too slow it might have something to do with the multiple if/then/else. If its still a bit slow, try making seperate triggers with 1 if/then/else each.