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Ideology modding

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Ideologies represent all of the different political beliefs or alignments in the selected nation. An ideology will help to determine the choices and paths that the nation will take.

Ideologies are found in /Hearts of Iron IV/common/ideologies/*.txt.

Ideologies[edit]

An ideology follows the following format:

ideologies = {
	
	anarchist = {
	
		types = {
			anarcho_syndicalism = { # Used when assigning ideologies to leaders. Eg. democratic has conservatism, liberalism, and socialism. One value can be defined (yes/no)
				can_be_randomly_selected = # If no, the subideology will not be randomly selected when creating a new random leader
			}
		}
		
		dynamic_faction_names = {
			"FACTION_NAME_ANARCHIST_1" # Faction names used by the ai when an ai with this ideology creates a faction
		}
		
		color = { 169 42 42 } # RGB ideology colour. The color it appears when in a political pie chart or next to the chart
		
		rules = { # Rules for the ideology.  (yes/no)
                        can_create_collaboration_government = # Can create a collaboration government
			can_declare_war_on_same_ideology = # Declare war on same ideology. Not required
			can_force_government = # Can change ideology in peace deal. Required
			can_send_volunteers = # Can send volunteers. Required
			can_puppet = # Can puppet a nation at peace deal. Required
			can_lower_tension = # Lowers tension at peace deal. Not required
			can_only_justify_war_on_threat_country = # Can only justify on a nation that has generated world tension/threat. Not required
			can_guarantee_other_ideologies = # Can guarantee nations with different ideologies. Not required
		}

                can_host_government_in_exile = no #Can host a government in exile
		
		war_impact_on_world_tension = # Goes from -1 to 1. Increases or decreases the world tension created by this nation
		faction_impact_on_world_tension = # Goes from -1 to 1. Increases or decreases a faction of this ideologies impact on tension
		
		modifiers = { # More rules for the ideology
			generate_wargoal_tension = # Required world tension to start justifying a war (0 to 1)
			join_faction_tension = # Required world tension to join a faction (0 to 1)
			lend_lease_tension = # Required tension to start a lend-lease (0 to 1)
			send_volunteers_tension = # Required tension to send volunteers (0 to 1)
			guarantee_tension = # Required tension to guarantee a nation (0 to 1)
			take_states_cost_factor = # Changes the cost of states in a peace deal. 0.25 would increase state cost by 25% (-1 to 1)
			annex_cost_factor = # Changes the cost of entirely annexing a nation in a peace deal. 0.5 would increase annexing cost by 50% (-1 to 1)
			justify_war_goal_when_in_major_war_time = # Changes the cost of justifying a war while in a major war. 0.5 would decrease time by 50% (0 to 1)
			drift_defence_factor = # Natural drift defence for the ideology # 0.3 would grant 30% drift defence (-1 to 1)
			puppet_cost_factor = # Changes the cost of puppeting a nation in a peace deal (-1 to 1)
		}

		can_be_boosted = # Can you boost this ideologies popularity in another country (yes/no)
		can_collaborate = #
		
		faction_modifiers = {
			faction_trade_opinion_factor = 0.50 #plus 50% trade opinion
		}
		ai_<ideology> = yes # Determines what ai this ideology will use (democratic, communism, fascism, neutral or make a new one.)
	}
}

Ai peace[edit]

This is what the ai will look to to determine how they will act. It tells them in what circumstance to take a state, annex or puppet, or what they want to achieve from a peace deal.

It is influenced by the ai's ideology

It is located in /Hearts of Iron IV/common/ai_peace/*.txt and every ideology has its own file. Should you not make a specialised one, the ai will just use /Hearts of Iron IV/common/ai_peace/z_default.txt

Getting the ideology in your game[edit]

Localisation[edit]

The localisation for the ideologies is located in /Hearts of Iron IV/localisation/parties_l_<language>.txt. This file also houses the names given to the political parties in each nation.

Somewhere in your copy of the file add

<ideology>:0 "<The name you want to be displayed>"
<ideology>_noun:0 "<The ideology's noun>"
<ideology>_desc:0 "<How you would refer to a nation with that ideology>" # Ie. Democratic Regime, Fascist Dictatorship, Anarcho-Capitalist Regime

You also have to add localisation for the ideology to every country which can be a bit time consuming

AFG_anarchist:0 "Anarchist Republic of Afghanistan"
AFG_anarchist_ADJ:0 "Anarcho-Afghan"
AFG_anarchist_DEF:0 "The People's Anarchist Republic of Afghanistan"

GFX[edit]

Every nation will either need a flag for this ideology, or a generic national flag.

To assign an ideology to a flag just name it <TAG>_<ideology>.tga or create a flag for the nation to use that doesn't have a specific ideology by just naming the flag <TAG>.tga. Doing it the last way makes it easier to add flags when you have added a lot of similar ideologies.

Country history[edit]

If you want the ideology to appear in a country you will have to add it like this to a countries history file like this: In France, for example /Hearts of Iron IV/history/countries/FRA - France.txt

set_politics = {
	ruling_party = democratic
	last_election = "1932.5.1"
	election_frequency = 48
	elections_allowed = yes
}
set_popularities = { #This MUST add up to 100 otherwise the ideologies break
	democratic = 69
	fascism = 1
	communism = 30
}

France will now need a new leader

create_country_leader = {
	name = "Édouard Daladier"
	desc = "POLITICS_ÉDOUARD_DALADIER_DESC"
	picture = "Portrait_France_Edouard_Daladier.dds"
	expire = "1965.1.1"
	ideology = socialism
	traits = {
		stout_defender
	}
}

Political advisor[edit]

If you want to make it possible for you to boost the ideology through advisor you have to add this into /Hearts of Iron IV/common/country_leader/00_traits.txt

<ideology>_booster = {
	random = no
	sprite = 13
	<ideology>_drift = 0.1
	
	ai_will_do = {
		factor = 0
	}
}

Also to add localisation to this advisor go to /Hearts of Iron IV/localisation/ideas_l_<language>.txt and add something similar to:

generic_<ideology>_booster:0 "" #Whatever you want to call the person that supports the ideology. Eg. Democratic Politician, Communist Politician, Fascist Politician

If you want a country to have an advisor of this ideology you have to go to the nation's idea files in /Hearts of Iron IV/common/ideas/<nation>.txt and add:

 <name> = {
			
	allowed = {
		original_tag = "<TAG>"
	}	
	traits = { <ideology>_booster }
	
	on_add = {
		country_event = # Add an event here if you want one
	}
	
	do_effect = {
		NOT = {
			has_government = <ideology> # You can only select it if your current ideology isn't your new one
		}
	}

	ai_will_do = {
		factor = 0
	}
}