[Solved] Singular unit-type

[WarCortez]

Is there a way to make a non-hero trainable unit which is restricted to 1/owner? Like, training a Storm Wyrm and the player can't train another until losing the one they already have?

 

[Dr Super Good]

Yes you can use the trigger action to set a unit count limit for the unit.

 

[Uncle]

• Disable
  • Events
    • Unit - A unit Finishes training a unit
  • Conditions
    • (Unit-type of (Trained unit)) Equal to Gryphon Rider
  • Actions
    • Player - Limit training of Gryphon Rider to 0 for (Owner of (Triggering unit))

• Enable
  • Events
    • Unit - A unit Dies
  • Conditions
    • (Unit-type of (Dying unit)) Equal to Gryphon Rider
  • Actions
    • Player - Limit training of Gryphon Rider to 1 for (Owner of (Triggering unit))

I believe this setup might have an exploit by allowing the Player to queue up several Gryphon Riders and bypass the Limit in doing so.

If that's the case, you can change the Event in the Disable trigger to: A unit Begins training a unit, instead of Finishes.

You would then create a new Enable trigger that uses the Event: A unit Cancels training a unit.

The new trigger would look something like this:
A unit Cancels training a unit -> Unit-type = Gryphon Rider -> Limit training to 1

Obviously replace Gryphon Rider with your Storm Wyrm.

 

[WarCortez]

Begins training doesn't respond to "trained unit" and "triggering unit" references.

 

[Uncle]

Begins training doesn't respond to "trained unit" and "triggering unit" references.

Right, you want to use Trained Unit-Type instead. See my picture.

 

[Drake53]

• Disable
  • Events
    • Unit - A unit Finishes training a unit
  • Conditions
    • (Unit-type of (Trained unit)) Equal to Gryphon Rider
  • Actions
    • Player - Limit training of Gryphon Rider to 0 for (Owner of (Triggering unit))

• Enable
  • Events
    • Unit - A unit Dies
  • Conditions
    • (Unit-type of (Dying unit)) Equal to Gryphon Rider
  • Actions
    • Player - Limit training of Gryphon Rider to 1 for (Owner of (Triggering unit))

Why not just limit training to 1 at map init?

 

[WarCortez]

Why not just limit training to 1 at map init?

That can be bypassed by training more than 1 at once.

 

[WarCortez]

Right, you want to use Trained Unit-Type instead. See my picture.

Ah, thanks, apparently that works like a charm, both cancel and dying.

 

[Drake53]

That can be bypassed by training more than 1 at once.

Just tested (on 1.31 PTR if it matters), the limit takes units being trained into account, so if you don't have the unit type, but you're training one, you cannot add more units to the training queue.

 

[WarCortez]

Just tested (on 1.31 PTR if it matters), the limit takes units being trained into account, so if you don't have the unit type, but you're training one, you cannot add more units to the training queue.

I have 1.26. I don't know if training from more building than 1 counts but Uncle's solution works fine.

 

[Dr Super Good]

As far as I am aware the action has always taken units being trained into account. I recall there being an exploit involving units that can change unit type (upgrade into other units, or morph) but not with training the unit.