Making a new unit ability

[Arier]

I'd like to add a new unit ability for unit of dragons to burn the city. What do we need? Dragons, obviously!
But!

There's no way to limit this ability to dragons unit:

[some unit] = {
any_sub_unit = {
owning_unit = {
oh, we're back to the unit
}
}
}

We have no has_sub_unit, everything we have is only for full units.

My idea: Make trade_good "dragons_dragons" and "dragons". There will be no "dragons_dragons" ont he map but some "dragons". When the country have a "dragons" it cant spawn a unit by decision. The decision will set variable "dragonised_country" for the country. And in unit_abilities there ability to dracaryse the city will be limited by this variable.

Have anyone something more simpe?

 

[Magnar]

can you limit the ability for only when dragons are in the army?

 

[xyloz]

You can use is_dominant_unit = dragon in the unit scope, which will restrict the action to units that have a majority of the unit, which seems workable.

 

[Arier]

Magnar:
No, it's unpossible. There's nothing I can use in scope for subunite.

Xyloz:
Triggers.log says that is for units, but I will check it. Maybe it's error of devs.

Spoiler: is_dominant_unit - check if a Unit has a specific modifier Supported Scopes: unit

is_dominant_unit - check if a Unit has a specific modifier
Supported Scopes: unit

 

[Svanley]

You could try applying a variable on a province that has any dragons on it, and then use that for the ability trigger. Never tried to do anything with units so dont know if triggers for units work that way.