[Partially solved] How to check alliances?

[Kiliç Alì]

here the problem:

Spoiler Alert, click show to read: 

I want to check if a faction is allied with anybody is holding a specific settlement.
of course I cannot use this

 monitor_event FactionTurnStart [some conditions]
if I_SettlementOwner Big_City = milan
and DiplomaticStanceFromFaction milan = Allied
console_command victory scotland
end_if
 
if I_SettlementOwner Big_City = venice
and DiplomaticStanceFromFaction venice = Allied
console_command victory scotland
end_if
end_monitor

becouse the DiplomaticStanceFromFaction does not work with ifs.
Since checking the alliances for each faction would be having something like 10⁹ monitors, I was wandering if some workaround was possible.
The idea that come in my mind is, if possible, to change the faction labels.

monitor_event FactionTurnEnd TrueCondition
if I_SettlementOwne Big_City = venice
command: label venice into global_king                   ; Is there any command? I can't find anything in my docudemos
end_if
if I_SettlementOwne Big_City = milan
command: label milan into global_king
end_if
end_mointor

so then the 1st script becomes:

 monitor_event FactionTurnStart [some conditions]
and DiplomaticStanceFromFaction global_king = Allied
console_command victory scotland
end_if
 
if I_SettlementOwner Big_City = venice
and DiplomaticStanceFromFaction global_king = Allied
console_command victory scotland
end_if
end_monitor

thanks in advance.

EDIT solved it. here the solution

Spoiler Alert, click show to read: 

you use a counter for each faction

 
declare counter faction1_alliance       ;0 neutral, 1 allied
declare counter faction2_alliance
declare counter faction3_alliance
declare counter faction4_alliance
declare counter faction5_alliance

then you use a monitor firing at PreFactionTurnStart

 
monitor_event PreFactionTurnStart TrueCondition
and DiplomaticStanceFromFaction faction1 = Allied
set_counter faction1_alliance
end_monitor

this must be repeated for each faction.
then at turn's end each counter is set again to 0

monitor_event FactionTurnEnd TrueCondition      ;Set counters to 0 at turn's end
set_counter faction1_alliance 0
set_counter faction2_alliance 0
set_counter faction3_alliance 0
set_counter faction4_alliance 0
set_counter faction5_alliance 0
end_monitor

So the main script becomes:

 monitor_event FactionTurnStart [some conditions]
if I_SettlementOwner Big_City = milan
and I_CompareCounter milan_alliance = 1
console_command victory scotland
end_if

if I_SettlementOwner Big_City = venice
and CompareCounter venice_alliance  = 1
console_command victory scotland
end_if
end_monitor

BUT this leads to a big number of monitors firing during passage of turn - wich is a bad thing. Does anybody have an alternative solution (= less time consuming?)

[TNZ]

Kiliç Alì: There are actual events for declaring and breaking an alliance, so you don't need to keep setting and resetting the counters:

Spoiler Alert, click show to read: 

declare_counter sicily_allied_with_milan

	monitor_event FactionAllianceDeclared FactionType sicily
		and TargetFactionType milan
   		set_counter sicily_allied_with_milan 1
	end_monitor

	monitor_event FactionBreakAlliance FactionType sicily
		and TargetFactionType milan
   		set_counter sicily_allied_with_milan 0
	end_monitor

[Taiji]

Off the top of my head:

monitor_event UpdateAttitude FactionType factionX
and TargetFactionType factionY
and DiplomaticStance = allied
and I_comparecounter XYallies != 1
set_counter XYallies 1
end_monitor

monitor_event UpdateAttitude FactionType factionY
and TargetFactionType factionX
and DiplomaticStance = allied
and I_comparecounter XYallies != 1
set_counter XYallies 1
end_monitor

monitor_event UpdateAttitude FactionType factionX
and TargetFactionType factionY
and not DiplomaticStance = allied
and I_comparecounter XYallies = 1
set_counter XYallies 0
end_monitor

monitor_event UpdateAttitude FactionType factionY
and TargetFactionType factionX
and not DiplomaticStance = allied
and I_comparecounter XYallies = 1
set_counter XYallies 0
end_monitor

That tracks X and Y faction's alliance with each other when AI attitudes update. Fine if you're happy with it being tracked at the start of the first faction's turn. Would be a simpler script if it just tracked relations with the player (but I was thinking about hotseat ) - 30 factions means X needs to track 29 relationships, Y needs to track 28 (not X), Z needs to track 27 (not X or Y), etc. Nice big script.