can_use_struggle_cbs_trigger

The comment above it in the file

Can the struggle conquest CB be used?
Currently, we're generous with this. Rather than tying it to a parameter, you just need to be involved in a struggle.
This should sync neatly with the various struggle_conquest_cb_is_XYZ_phase_triggers, but due to parameter requirements, can't easily be made to do so automagically.

What it checks

• the game's own tooltip text · ◦ our reading of the script line · code the script where neither exists

“They” is whatever it runs on (the scope it is called in). The scripted triggers and effects it calls link to their own pages; $PARAMETERS$ stay as written: each call fills them in.

can_use_struggle_cbs_trigger = {
	OR = {
		any_character_struggle = { involvement = involved }
		# Execption if taking hostility ending
		AND = {
			exists = scope:attacker.house
			scope:attacker.house = {
				OR ={
					has_house_modifier = fp2_struggle_hostility_house_combined_modifier
					has_house_modifier = fp2_struggle_hostility_house_faith_modifier
					has_house_modifier = fp2_struggle_hostility_house_culture_modifier
				}
			}
		}
	}
}