Add ModifierEffect targets

10 files changed, 273 insertions, 182 deletions

diff --git a/src/openvic-simulation/economy/BuildingType.cpp b/src/openvic-simulation/economy/BuildingType.cpp
index e7c0d59..d75f1b2 100644
--- a/src/openvic-simulation/economy/BuildingType.cpp
+++ b/src/openvic-simulation/economy/BuildingType.cpp
@@ -114,16 +114,17 @@ bool BuildingTypeManager::load_buildings_file(
 
 	for (BuildingType const& building_type : building_types.get_items()) {
 		using enum ModifierEffect::format_t;
+		using enum ModifierEffect::target_t;
 
 		static constexpr std::string_view max_prefix = "max_";
 		static constexpr std::string_view min_prefix = "min_build_";
 		ret &= modifier_manager.add_modifier_effect(
-			StringUtils::append_string_views(max_prefix, building_type.get_identifier()), true, INT,
+			StringUtils::append_string_views(max_prefix, building_type.get_identifier()), true, INT, PROVINCE,
 			StringUtils::append_string_views("$", building_type.get_identifier(), "$ $TECH_MAX_LEVEL$")
 		);
 		// TODO - add custom localisation for "min_build_$building_type$" modifiers
 		ret &= modifier_manager.add_modifier_effect(
-			StringUtils::append_string_views(min_prefix, building_type.get_identifier()), false, INT
+			StringUtils::append_string_views(min_prefix, building_type.get_identifier()), false, INT, PROVINCE
 		);
 
 		if (building_type.is_in_province()) {
diff --git a/src/openvic-simulation/economy/GoodDefinition.cpp b/src/openvic-simulation/economy/GoodDefinition.cpp
index ed24549..97396f2 100644
--- a/src/openvic-simulation/economy/GoodDefinition.cpp
+++ b/src/openvic-simulation/economy/GoodDefinition.cpp
@@ -89,6 +89,7 @@ bool GoodDefinitionManager::load_goods_file(ast::NodeCPtr root) {
 
 bool GoodDefinitionManager::generate_modifiers(ModifierManager& modifier_manager) const {
 	using enum ModifierEffect::format_t;
+	using enum ModifierEffect::target_t;
 
 	bool ret = true;
 
@@ -100,7 +101,7 @@ bool GoodDefinitionManager::generate_modifiers(ModifierManager& modifier_manager
 		for (GoodDefinition const& good : get_good_definitions()) {
 			ret &= modifier_manager.add_modifier_effect(
 				ModifierManager::get_flat_identifier(name, good.get_identifier()), is_positive_good, PROPORTION_DECIMAL,
-				make_localisation_suffix(good.get_identifier())
+				COUNTRY, make_localisation_suffix(good.get_identifier())
 			);
 		}
 	};
diff --git a/src/openvic-simulation/military/UnitType.cpp b/src/openvic-simulation/military/UnitType.cpp
index 71bc5c3..bb227fb 100644
--- a/src/openvic-simulation/military/UnitType.cpp
+++ b/src/openvic-simulation/military/UnitType.cpp
@@ -321,17 +321,18 @@ bool UnitTypeManager::generate_modifiers(ModifierManager& modifier_manager) cons
 	const auto generate_stat_modifiers = [&modifier_manager, &ret](
 		std::string_view identifier, UnitType::branch_t branch
 	) -> void {
+		using enum ModifierEffect::format_t;
+		using enum ModifierEffect::target_t;
+
 		const auto stat_modifier = [&modifier_manager, &ret, &identifier](
 			std::string_view suffix, bool is_positive_good, ModifierEffect::format_t format, std::string_view localisation_key
 		) -> void {
 			ret &= modifier_manager.add_modifier_effect(
-				ModifierManager::get_flat_identifier(identifier, suffix), is_positive_good, format,
+				ModifierManager::get_flat_identifier(identifier, suffix), is_positive_good, format, COUNTRY,
 				StringUtils::append_string_views("$", identifier, "$: $", localisation_key, "$")
 			);
 		};
 
-		using enum ModifierEffect::format_t;
-
 		ret &= modifier_manager.register_complex_modifier(identifier);
 
 		stat_modifier("attack", true, RAW_DECIMAL, "ATTACK");
diff --git a/src/openvic-simulation/modifier/Modifier.cpp b/src/openvic-simulation/modifier/Modifier.cpp
index 10e32a4..73b30ce 100644
--- a/src/openvic-simulation/modifier/Modifier.cpp
+++ b/src/openvic-simulation/modifier/Modifier.cpp
@@ -17,8 +17,9 @@ static std::string make_default_modifier_effect_localisation_key(std::string_vie
 }
 
 ModifierEffect::ModifierEffect(
-	std::string_view new_identifier, bool new_positive_good, format_t new_format, std::string_view new_localisation_key
-) : HasIdentifier { new_identifier }, positive_good { new_positive_good }, format { new_format },
+	std::string_view new_identifier, bool new_positive_good, format_t new_format, target_t new_targets,
+	std::string_view new_localisation_key
+) : HasIdentifier { new_identifier }, positive_good { new_positive_good }, format { new_format }, targets { new_targets },
 	localisation_key {
 		new_localisation_key.empty() ? make_default_modifier_effect_localisation_key(new_identifier) : new_localisation_key
 	} {}
@@ -115,12 +116,29 @@ ModifierValue ModifierValue::operator*(fixed_point_t const& right) const {
 	return copy *= right;
 }
 
-void ModifierValue::multiply_add(ModifierValue const& other, fixed_point_t multiplier) {
-	if (multiplier == fixed_point_t::_1()) {
+void ModifierValue::apply_target_filter(ModifierEffect::target_t targets) {
+	using enum ModifierEffect::target_t;
+
+	erase_if(
+		values,
+		[targets](effect_map_t::value_type const& value) -> bool {
+			return (value.first->get_targets() & targets) == NO_TARGETS;
+		}
+	);
+}
+
+void ModifierValue::multiply_add_filter(
+	ModifierValue const& other, fixed_point_t multiplier, ModifierEffect::target_t targets
+) {
+	using enum ModifierEffect::target_t;
+
+	if (multiplier == fixed_point_t::_1() && targets == ALL_TARGETS) {
 		*this += other;
-	} else if (multiplier != fixed_point_t::_0()) {
+	} else if (multiplier != fixed_point_t::_0() && targets != NO_TARGETS) {
 		for (effect_map_t::value_type const& value : other.values) {
-			values[value.first] += value.second * multiplier;
+			if ((value.first->get_targets() & targets) != NO_TARGETS) {
+				values[value.first] += value.second * multiplier;
+			}
 		}
 	}
 }
@@ -145,247 +163,261 @@ ModifierInstance::ModifierInstance(Modifier const& new_modifier, Date new_expiry
 	: modifier { &new_modifier }, expiry_date { new_expiry_date } {}
 
 bool ModifierManager::add_modifier_effect(
-	std::string_view identifier, bool positive_good, ModifierEffect::format_t format, std::string_view localisation_key
+	std::string_view identifier, bool positive_good, ModifierEffect::format_t format, ModifierEffect::target_t targets,
+	std::string_view localisation_key
 ) {
 	if (identifier.empty()) {
 		Logger::error("Invalid modifier effect identifier - empty!");
 		return false;
 	}
-	return modifier_effects.add_item({ std::move(identifier), positive_good, format, localisation_key });
+	return modifier_effects.add_item({ std::move(identifier), positive_good, format, targets, localisation_key });
 }
 
 bool ModifierManager::setup_modifier_effects() {
 	bool ret = true;
 
 	using enum ModifierEffect::format_t;
+	using enum ModifierEffect::target_t;
 	/* Tech/inventions only */
-	ret &= add_modifier_effect("cb_creation_speed", true, PROPORTION_DECIMAL, "CB_MANUFACTURE_TECH");
-	ret &= add_modifier_effect("combat_width", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("plurality", true, PERCENTAGE_DECIMAL, "TECH_PLURALITY");
-	ret &= add_modifier_effect("pop_growth", true, PROPORTION_DECIMAL, "TECH_POP_GROWTH");
-	ret &= add_modifier_effect("regular_experience_level", true, RAW_DECIMAL, "REGULAR_EXP_TECH");
-	ret &= add_modifier_effect("reinforce_rate", true, PROPORTION_DECIMAL, "REINFORCE_TECH");
-	ret &= add_modifier_effect("seperatism", false, PROPORTION_DECIMAL, "SEPARATISM_TECH"); // paradox typo
-	ret &= add_modifier_effect("shared_prestige", true, RAW_DECIMAL, "SHARED_PRESTIGE_TECH");
-	ret &= add_modifier_effect("tax_eff", true, PROPORTION_DECIMAL, "TECH_TAX_EFF");
+	ret &= add_modifier_effect("cb_creation_speed", true, PROPORTION_DECIMAL, COUNTRY, "CB_MANUFACTURE_TECH");
+	ret &= add_modifier_effect("combat_width", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("plurality", true, PERCENTAGE_DECIMAL, COUNTRY, "TECH_PLURALITY");
+	ret &= add_modifier_effect("pop_growth", true, PROPORTION_DECIMAL, COUNTRY, "TECH_POP_GROWTH");
+	ret &= add_modifier_effect("regular_experience_level", true, RAW_DECIMAL, COUNTRY, "REGULAR_EXP_TECH");
+	ret &= add_modifier_effect("reinforce_rate", true, PROPORTION_DECIMAL, COUNTRY, "REINFORCE_TECH");
+	ret &= add_modifier_effect("seperatism", false, PROPORTION_DECIMAL, COUNTRY, "SEPARATISM_TECH"); // paradox typo
+	ret &= add_modifier_effect("shared_prestige", true, RAW_DECIMAL, COUNTRY, "SHARED_PRESTIGE_TECH");
+	ret &= add_modifier_effect("tax_eff", true, PERCENTAGE_DECIMAL, COUNTRY, "TECH_TAX_EFF");
 
 	/* Country Modifier Effects */
-	ret &= add_modifier_effect("administrative_efficiency", true, PROPORTION_DECIMAL);
+	ret &= add_modifier_effect("administrative_efficiency", true, PROPORTION_DECIMAL, COUNTRY);
 	ret &= add_modifier_effect(
-		"administrative_efficiency_modifier", true, PROPORTION_DECIMAL,
+		"administrative_efficiency_modifier", true, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("administrative_efficiency")
 	);
-	ret &= add_modifier_effect("artisan_input", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("artisan_output", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("artisan_throughput", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("badboy", false, RAW_DECIMAL);
-	ret &= add_modifier_effect("cb_generation_speed_modifier", true, PROPORTION_DECIMAL);
+	ret &= add_modifier_effect("artisan_input", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("artisan_output", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("artisan_throughput", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("badboy", false, RAW_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("cb_generation_speed_modifier", true, PROPORTION_DECIMAL, COUNTRY);
 	ret &= add_modifier_effect(
-		"civilization_progress_modifier", true, PROPORTION_DECIMAL,
+		"civilization_progress_modifier", true, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("civilization_progress")
 	);
-	ret &= add_modifier_effect("colonial_life_rating", false, INT, "COLONIAL_LIFE_TECH");
-	ret &= add_modifier_effect("colonial_migration", true, PROPORTION_DECIMAL, "COLONIAL_MIGRATION_TECH");
-	ret &= add_modifier_effect("colonial_points", true, INT, "COLONIAL_POINTS_TECH");
-	ret &= add_modifier_effect("colonial_prestige", true, PROPORTION_DECIMAL, "COLONIAL_PRESTIGE_MODIFIER_TECH");
-	ret &= add_modifier_effect("core_pop_consciousness_modifier", false, RAW_DECIMAL);
-	ret &= add_modifier_effect("core_pop_militancy_modifier", false, RAW_DECIMAL);
-	ret &= add_modifier_effect("dig_in_cap", true, INT, "DIGIN_FROM_TECH");
-	ret &= add_modifier_effect("diplomatic_points", true, PROPORTION_DECIMAL, "DIPLOMATIC_POINTS_TECH");
+	ret &= add_modifier_effect("colonial_life_rating", false, INT, COUNTRY, "COLONIAL_LIFE_TECH");
+	ret &= add_modifier_effect("colonial_migration", true, PROPORTION_DECIMAL, COUNTRY, "COLONIAL_MIGRATION_TECH");
+	ret &= add_modifier_effect("colonial_points", true, INT, COUNTRY, "COLONIAL_POINTS_TECH");
+	ret &= add_modifier_effect("colonial_prestige", true, PROPORTION_DECIMAL, COUNTRY, "COLONIAL_PRESTIGE_MODIFIER_TECH");
+	ret &= add_modifier_effect("core_pop_consciousness_modifier", false, RAW_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("core_pop_militancy_modifier", false, RAW_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("dig_in_cap", true, INT, COUNTRY, "DIGIN_FROM_TECH");
+	ret &= add_modifier_effect("diplomatic_points", true, PROPORTION_DECIMAL, COUNTRY, "DIPLOMATIC_POINTS_TECH");
 	ret &= add_modifier_effect(
-		"diplomatic_points_modifier", true, PROPORTION_DECIMAL,
+		"diplomatic_points_modifier", true, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("diplopoints_gain")
 	);
-	ret &= add_modifier_effect("education_efficiency", true, PROPORTION_DECIMAL);
+	ret &= add_modifier_effect("education_efficiency", true, PROPORTION_DECIMAL, COUNTRY);
 	ret &= add_modifier_effect(
-		"education_efficiency_modifier", true, PROPORTION_DECIMAL,
+		"education_efficiency_modifier", true, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("education_efficiency")
 	);
-	ret &= add_modifier_effect("factory_cost", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("factory_input", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("factory_maintenance", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("factory_output", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("factory_owner_cost", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("factory_throughput", true, PROPORTION_DECIMAL);
+	ret &= add_modifier_effect("factory_cost", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("factory_input", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("factory_maintenance", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("factory_output", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("factory_owner_cost", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("factory_throughput", true, PROPORTION_DECIMAL, COUNTRY);
 	ret &= add_modifier_effect(
-		"global_assimilation_rate", true, PROPORTION_DECIMAL,
+		"global_assimilation_rate", true, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("assimilation_rate")
 	);
 	ret &= add_modifier_effect(
-		"global_immigrant_attract", true, PROPORTION_DECIMAL,
+		"global_immigrant_attract", true, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("immigant_attract")
 	);
-	ret &= add_modifier_effect("global_pop_consciousness_modifier", false, RAW_DECIMAL);
-	ret &= add_modifier_effect("global_pop_militancy_modifier", false, RAW_DECIMAL);
+	ret &= add_modifier_effect("global_pop_consciousness_modifier", false, RAW_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("global_pop_militancy_modifier", false, RAW_DECIMAL, COUNTRY);
 	ret &= add_modifier_effect(
-		"global_population_growth", true, PROPORTION_DECIMAL,
+		"global_population_growth", true, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("population_growth")
 	);
-	ret &= add_modifier_effect("goods_demand", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("import_cost", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("increase_research", true, PROPORTION_DECIMAL, "INC_RES_TECH");
-	ret &= add_modifier_effect("influence", true, PROPORTION_DECIMAL, "TECH_GP_INFLUENCE");
+	ret &= add_modifier_effect("goods_demand", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("import_cost", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("increase_research", true, PROPORTION_DECIMAL, COUNTRY, "INC_RES_TECH");
+	ret &= add_modifier_effect("influence", true, PROPORTION_DECIMAL, COUNTRY, "TECH_GP_INFLUENCE");
 	ret &= add_modifier_effect(
-		"influence_modifier", true, PROPORTION_DECIMAL,
+		"influence_modifier", true, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("greatpower_influence_gain")
 	);
-	ret &= add_modifier_effect("issue_change_speed", true, PROPORTION_DECIMAL);
+	ret &= add_modifier_effect("issue_change_speed", true, PROPORTION_DECIMAL, COUNTRY);
 	ret &= add_modifier_effect(
-		"land_attack_modifier", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("land_attack")
+		"land_attack_modifier", true, PROPORTION_DECIMAL, COUNTRY, make_default_modifier_effect_localisation_key("land_attack")
 	);
-	ret &= add_modifier_effect("land_attrition", false, PROPORTION_DECIMAL, "LAND_ATTRITION_TECH");
+	ret &= add_modifier_effect("land_attrition", false, PROPORTION_DECIMAL, COUNTRY, "LAND_ATTRITION_TECH");
 	ret &= add_modifier_effect(
-		"land_defense_modifier", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("land_defense")
+		"land_defense_modifier", true, PROPORTION_DECIMAL, COUNTRY,
+		make_default_modifier_effect_localisation_key("land_defense")
 	);
-	ret &= add_modifier_effect("land_organisation", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("land_unit_start_experience", true, RAW_DECIMAL);
-	ret &= add_modifier_effect("leadership", true, RAW_DECIMAL, "LEADERSHIP");
+	ret &= add_modifier_effect("land_organisation", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("land_unit_start_experience", true, RAW_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("leadership", true, RAW_DECIMAL, COUNTRY, "LEADERSHIP");
 	ret &= add_modifier_effect(
-		"leadership_modifier", true, PROPORTION_DECIMAL,
+		"leadership_modifier", true, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("global_leadership_modifier")
 	);
-	ret &= add_modifier_effect("literacy_con_impact", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("loan_interest", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect(
-		"max_loan_modifier", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("max_loan_amount")
-	);
-	ret &= add_modifier_effect("max_military_spending", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("max_national_focus", true, INT, "TECH_MAX_FOCUS");
-	ret &= add_modifier_effect("max_social_spending", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("max_tariff", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("max_tax", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("max_war_exhaustion", true, PERCENTAGE_DECIMAL, "MAX_WAR_EXHAUSTION");
-	ret &= add_modifier_effect("military_tactics", true, PROPORTION_DECIMAL, "MIL_TACTICS_TECH");
-	ret &= add_modifier_effect("min_military_spending", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("min_social_spending", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("min_tariff", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("min_tax", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect(
-		"minimum_wage", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("minimun_wage")
-	);
-	ret &= add_modifier_effect("mobilisation_economy_impact", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("mobilisation_size", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("mobilization_impact", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect(
-		"naval_attack_modifier", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("naval_attack")
-	);
-	ret &= add_modifier_effect("naval_attrition", false, PROPORTION_DECIMAL, "NAVAL_ATTRITION_TECH");
-	ret &= add_modifier_effect(
-		"naval_defense_modifier", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("naval_defense")
-	);
-	ret &= add_modifier_effect("naval_organisation", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("naval_unit_start_experience", true, RAW_DECIMAL);
-	ret &= add_modifier_effect("non_accepted_pop_consciousness_modifier", false, RAW_DECIMAL);
-	ret &= add_modifier_effect("non_accepted_pop_militancy_modifier", false, RAW_DECIMAL);
-	ret &= add_modifier_effect("org_regain", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("pension_level", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("permanent_prestige", true, RAW_DECIMAL, "PERMANENT_PRESTIGE_TECH");
-	ret &= add_modifier_effect("political_reform_desire", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("poor_savings_modifier", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("prestige", true, RAW_DECIMAL);
-	ret &= add_modifier_effect("reinforce_speed", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("research_points", true, RAW_DECIMAL);
-	ret &= add_modifier_effect("research_points_modifier", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("research_points_on_conquer", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("rgo_output", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("rgo_throughput", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("ruling_party_support", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect(
-		"self_unciv_economic_modifier", false, PROPORTION_DECIMAL,
+	ret &= add_modifier_effect("literacy_con_impact", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("loan_interest", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect(
+		"max_loan_modifier", true, PROPORTION_DECIMAL, COUNTRY,
+		make_default_modifier_effect_localisation_key("max_loan_amount")
+	);
+	ret &= add_modifier_effect("max_military_spending", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("max_national_focus", true, INT, COUNTRY, "TECH_MAX_FOCUS");
+	ret &= add_modifier_effect("max_social_spending", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("max_tariff", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("max_tax", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("max_war_exhaustion", true, PERCENTAGE_DECIMAL, COUNTRY, "MAX_WAR_EXHAUSTION");
+	ret &= add_modifier_effect("military_tactics", true, PROPORTION_DECIMAL, COUNTRY, "MIL_TACTICS_TECH");
+	ret &= add_modifier_effect("min_military_spending", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("min_social_spending", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("min_tariff", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("min_tax", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect(
+		"minimum_wage", true, PROPORTION_DECIMAL, COUNTRY, make_default_modifier_effect_localisation_key("minimun_wage")
+	);
+	ret &= add_modifier_effect("mobilisation_economy_impact", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("mobilisation_size", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("mobilization_impact", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect(
+		"naval_attack_modifier", true, PROPORTION_DECIMAL, COUNTRY,
+		make_default_modifier_effect_localisation_key("naval_attack")
+	);
+	ret &= add_modifier_effect("naval_attrition", false, PROPORTION_DECIMAL, COUNTRY, "NAVAL_ATTRITION_TECH");
+	ret &= add_modifier_effect(
+		"naval_defense_modifier", true, PROPORTION_DECIMAL, COUNTRY,
+		make_default_modifier_effect_localisation_key("naval_defense")
+	);
+	ret &= add_modifier_effect("naval_organisation", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("naval_unit_start_experience", true, RAW_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("non_accepted_pop_consciousness_modifier", false, RAW_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("non_accepted_pop_militancy_modifier", false, RAW_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("org_regain", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("pension_level", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("permanent_prestige", true, RAW_DECIMAL, COUNTRY, "PERMANENT_PRESTIGE_TECH");
+	ret &= add_modifier_effect("political_reform_desire", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("poor_savings_modifier", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("prestige", true, RAW_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("reinforce_speed", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("research_points", true, RAW_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("research_points_modifier", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("research_points_on_conquer", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("rgo_output", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("rgo_throughput", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("ruling_party_support", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect(
+		"self_unciv_economic_modifier", false, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("self_unciv_economic")
 	);
 	ret &= add_modifier_effect(
-		"self_unciv_military_modifier", false, PROPORTION_DECIMAL,
+		"self_unciv_military_modifier", false, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("self_unciv_military")
 	);
-	ret &= add_modifier_effect("social_reform_desire", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("soldier_to_pop_loss", true, PROPORTION_DECIMAL, "SOLDIER_TO_POP_LOSS_TECH");
-	ret &= add_modifier_effect("supply_consumption", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("supply_range", true, PROPORTION_DECIMAL, "SUPPLY_RANGE_TECH");
-	ret &= add_modifier_effect("suppression_points_modifier", true, PROPORTION_DECIMAL, "SUPPRESSION_TECH");
+	ret &= add_modifier_effect("social_reform_desire", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("soldier_to_pop_loss", true, PROPORTION_DECIMAL, COUNTRY, "SOLDIER_TO_POP_LOSS_TECH");
+	ret &= add_modifier_effect("supply_consumption", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("supply_range", true, PROPORTION_DECIMAL, COUNTRY, "SUPPLY_RANGE_TECH");
+	ret &= add_modifier_effect("suppression_points_modifier", true, PROPORTION_DECIMAL, COUNTRY, "SUPPRESSION_TECH");
 	ret &= add_modifier_effect(
-		"tariff_efficiency_modifier", true, PROPORTION_DECIMAL,
+		"tariff_efficiency_modifier", true, PROPORTION_DECIMAL, COUNTRY,
 		make_default_modifier_effect_localisation_key("tariff_efficiency")
 	);
-	ret &= add_modifier_effect("tax_efficiency", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("unemployment_benefit", true, PROPORTION_DECIMAL);
+	ret &= add_modifier_effect("tax_efficiency", true, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("unemployment_benefit", true, PROPORTION_DECIMAL, COUNTRY);
 	ret &= add_modifier_effect(
-		"unciv_economic_modifier", false, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("unciv_economic")
+		"unciv_economic_modifier", false, PROPORTION_DECIMAL, COUNTRY,
+		make_default_modifier_effect_localisation_key("unciv_economic")
 	);
 	ret &= add_modifier_effect(
-		"unciv_military_modifier", false, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("unciv_military")
+		"unciv_military_modifier", false, PROPORTION_DECIMAL, COUNTRY,
+		make_default_modifier_effect_localisation_key("unciv_military")
 	);
-	ret &= add_modifier_effect("unit_recruitment_time", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("war_exhaustion", false, PROPORTION_DECIMAL, "WAR_EXHAUST_BATTLES");
+	ret &= add_modifier_effect("unit_recruitment_time", false, PROPORTION_DECIMAL, COUNTRY);
+	ret &= add_modifier_effect("war_exhaustion", false, PROPORTION_DECIMAL, COUNTRY, "WAR_EXHAUST_BATTLES");
 
 	/* Province Modifier Effects */
-	ret &= add_modifier_effect("assimilation_rate", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("boost_strongest_party", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("farm_rgo_eff", true, PROPORTION_DECIMAL, "TECH_FARM_OUTPUT");
+	ret &= add_modifier_effect("assimilation_rate", true, PROPORTION_DECIMAL, PROVINCE);
+	ret &= add_modifier_effect("boost_strongest_party", false, PROPORTION_DECIMAL, PROVINCE);
+	ret &= add_modifier_effect("farm_rgo_eff", true, PROPORTION_DECIMAL, PROVINCE, "TECH_FARM_OUTPUT");
 	ret &= add_modifier_effect(
-		"farm_rgo_size", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("farm_size")
+		"farm_rgo_size", true, PROPORTION_DECIMAL, PROVINCE, make_default_modifier_effect_localisation_key("farm_size")
 	);
 	ret &= add_modifier_effect(
-		"immigrant_attract", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("immigant_attract")
+		"immigrant_attract", true, PROPORTION_DECIMAL, PROVINCE,
+		make_default_modifier_effect_localisation_key("immigant_attract")
 	);
 	ret &= add_modifier_effect(
-		"immigrant_push", false, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("immigant_push")
+		"immigrant_push", false, PROPORTION_DECIMAL, PROVINCE, make_default_modifier_effect_localisation_key("immigant_push")
 	);
-	ret &= add_modifier_effect("life_rating", true, PROPORTION_DECIMAL);
+	ret &= add_modifier_effect("life_rating", true, PROPORTION_DECIMAL, PROVINCE);
 	ret &= add_modifier_effect(
-		"local_artisan_input", false, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("artisan_input")
+		"local_artisan_input", false, PROPORTION_DECIMAL, PROVINCE,
+		make_default_modifier_effect_localisation_key("artisan_input")
 	);
 	ret &= add_modifier_effect(
-		"local_artisan_output", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("artisan_output")
+		"local_artisan_output", true, PROPORTION_DECIMAL, PROVINCE,
+		make_default_modifier_effect_localisation_key("artisan_output")
 	);
 	ret &= add_modifier_effect(
-		"local_artisan_throughput", true, PROPORTION_DECIMAL,
+		"local_artisan_throughput", true, PROPORTION_DECIMAL, PROVINCE,
 		make_default_modifier_effect_localisation_key("artisan_throughput")
 	);
 	ret &= add_modifier_effect(
-		"local_factory_input", false, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("factory_input")
+		"local_factory_input", false, PROPORTION_DECIMAL, PROVINCE,
+		make_default_modifier_effect_localisation_key("factory_input")
 	);
 	ret &= add_modifier_effect(
-		"local_factory_output", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("factory_output")
+		"local_factory_output", true, PROPORTION_DECIMAL, PROVINCE,
+		make_default_modifier_effect_localisation_key("factory_output")
 	);
 	ret &= add_modifier_effect(
-		"local_factory_throughput", true, PROPORTION_DECIMAL,
+		"local_factory_throughput", true, PROPORTION_DECIMAL, PROVINCE,
 		make_default_modifier_effect_localisation_key("factory_throughput")
 	);
-	ret &= add_modifier_effect("local_repair", true, PROPORTION_DECIMAL);
+	ret &= add_modifier_effect("local_repair", true, PROPORTION_DECIMAL, PROVINCE);
 	ret &= add_modifier_effect(
-		"local_rgo_output", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("rgo_output")
+		"local_rgo_output", true, PROPORTION_DECIMAL, PROVINCE, make_default_modifier_effect_localisation_key("rgo_output")
 	);
 	ret &= add_modifier_effect(
-		"local_rgo_throughput", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("rgo_throughput")
+		"local_rgo_throughput", true, PROPORTION_DECIMAL, PROVINCE,
+		make_default_modifier_effect_localisation_key("rgo_throughput")
 	);
 	ret &= add_modifier_effect(
-		"local_ruling_party_support", true, PROPORTION_DECIMAL,
+		"local_ruling_party_support", true, PROPORTION_DECIMAL, PROVINCE,
 		make_default_modifier_effect_localisation_key("ruling_party_support")
 	);
-	ret &= add_modifier_effect("local_ship_build", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("max_attrition", false, RAW_DECIMAL);
-	ret &= add_modifier_effect("mine_rgo_eff", true, PROPORTION_DECIMAL, "TECH_MINE_OUTPUT");
+	ret &= add_modifier_effect("local_ship_build", false, PROPORTION_DECIMAL, PROVINCE);
+	ret &= add_modifier_effect("max_attrition", false, RAW_DECIMAL, PROVINCE);
+	ret &= add_modifier_effect("mine_rgo_eff", true, PROPORTION_DECIMAL, PROVINCE, "TECH_MINE_OUTPUT");
 	ret &= add_modifier_effect(
-		"mine_rgo_size", true, PROPORTION_DECIMAL, make_default_modifier_effect_localisation_key("mine_size")
+		"mine_rgo_size", true, PROPORTION_DECIMAL, PROVINCE, make_default_modifier_effect_localisation_key("mine_size")
 	);
-	ret &= add_modifier_effect("movement_cost", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("number_of_voters", false, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("pop_consciousness_modifier", false, RAW_DECIMAL);
-	ret &= add_modifier_effect("pop_militancy_modifier", false, RAW_DECIMAL);
-	ret &= add_modifier_effect("population_growth", true, PROPORTION_DECIMAL);
-	ret &= add_modifier_effect("supply_limit", true, RAW_DECIMAL);
+	ret &= add_modifier_effect("movement_cost", false, PROPORTION_DECIMAL, PROVINCE);
+	ret &= add_modifier_effect("number_of_voters", false, PROPORTION_DECIMAL, PROVINCE);
+	ret &= add_modifier_effect("pop_consciousness_modifier", false, RAW_DECIMAL, PROVINCE);
+	ret &= add_modifier_effect("pop_militancy_modifier", false, RAW_DECIMAL, PROVINCE);
+	ret &= add_modifier_effect("population_growth", true, PROPORTION_DECIMAL, PROVINCE);
+	ret &= add_modifier_effect("supply_limit", true, RAW_DECIMAL, PROVINCE);
 
 	/* Military Modifier Effects */
-	ret &= add_modifier_effect("attack", true, INT, "TRAIT_ATTACK");
-	ret &= add_modifier_effect("attrition", false, RAW_DECIMAL, "ATTRITION");
-	ret &= add_modifier_effect("defence", true, INT, "TRAIT_DEFEND");
-	ret &= add_modifier_effect("experience", true, PROPORTION_DECIMAL, "TRAIT_EXPERIENCE");
-	ret &= add_modifier_effect("morale", true, PROPORTION_DECIMAL, "TRAIT_MORALE");
-	ret &= add_modifier_effect("organisation", true, PROPORTION_DECIMAL, "TRAIT_ORGANISATION");
-	ret &= add_modifier_effect("reconnaissance", true, PROPORTION_DECIMAL, "TRAIT_RECONAISSANCE");
-	ret &= add_modifier_effect("reliability", true, RAW_DECIMAL, "TRAIT_RELIABILITY");
-	ret &= add_modifier_effect("speed", true, PROPORTION_DECIMAL, "TRAIT_SPEED");
+	ret &= add_modifier_effect("attack", true, INT, UNIT, "TRAIT_ATTACK");
+	ret &= add_modifier_effect("attrition", false, RAW_DECIMAL, UNIT, "ATTRITION");
+	ret &= add_modifier_effect("defence", true, INT, UNIT, "TRAIT_DEFEND");
+	ret &= add_modifier_effect("experience", true, PROPORTION_DECIMAL, UNIT, "TRAIT_EXPERIENCE");
+	ret &= add_modifier_effect("morale", true, PROPORTION_DECIMAL, UNIT, "TRAIT_MORALE");
+	ret &= add_modifier_effect("organisation", true, PROPORTION_DECIMAL, UNIT, "TRAIT_ORGANISATION");
+	ret &= add_modifier_effect("reconnaissance", true, PROPORTION_DECIMAL, UNIT, "TRAIT_RECONAISSANCE");
+	ret &= add_modifier_effect("reliability", true, RAW_DECIMAL, UNIT, "TRAIT_RELIABILITY");
+	ret &= add_modifier_effect("speed", true, PROPORTION_DECIMAL, UNIT, "TRAIT_SPEED");
 
 	return ret;
 }
diff --git a/src/openvic-simulation/modifier/Modifier.hpp b/src/openvic-simulation/modifier/Modifier.hpp
index 4b032c0..a848cb8 100644
--- a/src/openvic-simulation/modifier/Modifier.hpp
+++ b/src/openvic-simulation/modifier/Modifier.hpp
@@ -10,31 +10,43 @@ namespace OpenVic {
 	struct ModifierEffect : HasIdentifier {
 		friend struct ModifierManager;
 
-		enum class format_t {
+		enum class format_t : uint8_t {
 			PROPORTION_DECIMAL,	/* An unscaled fraction/ratio, with 1 being "full"/"whole" */
 			PERCENTAGE_DECIMAL,	/* A fraction/ratio scaled so that 100 is "full"/"whole" */
 			RAW_DECIMAL,		/* A continuous quantity, e.g. attack strength */
 			INT					/* A discrete quantity, e.g. building count limit */
 		};
 
+		enum class target_t : uint8_t {
+			NO_TARGETS  = 0,
+			COUNTRY     = 1 << 0,
+			PROVINCE    = 1 << 1,
+			UNIT        = 1 << 2,
+			ALL_TARGETS = (1 << 3) - 1
+		};
+
 	private:
 		/* If true, positive values will be green and negative values will be red.
 		 * If false, the colours will be switced.
 		 */
 		const bool PROPERTY_CUSTOM_PREFIX(positive_good, is);
 		const format_t PROPERTY(format);
+		const target_t PROPERTY(targets);
 		std::string PROPERTY(localisation_key);
 
 		// TODO - format/precision, e.g. 80% vs 0.8 vs 0.800, 2 vs 2.0 vs 200%
 
 		ModifierEffect(
-			std::string_view new_identifier, bool new_positive_good, format_t new_format, std::string_view new_localisation_key
+			std::string_view new_identifier, bool new_positive_good, format_t new_format, target_t mew_targets,
+			std::string_view new_localisation_key
 		);
 
 	public:
 		ModifierEffect(ModifierEffect&&) = default;
 	};
 
+	template<> struct enable_bitfield<ModifierEffect::target_t> : std::true_type {};
+
 	struct ModifierValue {
 		friend struct ModifierManager;
 
@@ -70,7 +82,8 @@ namespace OpenVic {
 		ModifierValue& operator*=(fixed_point_t const& right);
 		ModifierValue operator*(fixed_point_t const& right) const;
 
-		void multiply_add(ModifierValue const& other, fixed_point_t multiplier);
+		void apply_target_filter(ModifierEffect::target_t targets);
+		void multiply_add_filter(ModifierValue const& other, fixed_point_t multiplier, ModifierEffect::target_t targets);
 
 		friend std::ostream& operator<<(std::ostream& stream, ModifierValue const& value);
 	};
@@ -167,6 +180,7 @@ namespace OpenVic {
 		bool add_modifier_effect(
 			std::string_view identifier, bool positive_good,
 			ModifierEffect::format_t format,
+			ModifierEffect::target_t targets,
 			std::string_view localisation_key = {}
 		);
 
diff --git a/src/openvic-simulation/modifier/ModifierSum.cpp b/src/openvic-simulation/modifier/ModifierSum.cpp
index f603a5b..312432a 100644
--- a/src/openvic-simulation/modifier/ModifierSum.cpp
+++ b/src/openvic-simulation/modifier/ModifierSum.cpp
@@ -19,9 +19,15 @@ bool ModifierSum::has_effect(ModifierEffect const& effect) const {
 	return value_sum.has_effect(effect);
 }
 
-void ModifierSum::add_modifier(Modifier const& modifier, modifier_source_t source, fixed_point_t multiplier) {
-	modifiers.emplace_back(&modifier, multiplier, source);
-	value_sum.multiply_add(modifier, multiplier);
+void ModifierSum::add_modifier(
+	Modifier const& modifier, modifier_source_t const& source, fixed_point_t multiplier, ModifierEffect::target_t targets
+) {
+	using enum ModifierEffect::target_t;
+
+	if (multiplier != fixed_point_t::_0() && targets != NO_TARGETS) {
+		modifiers.emplace_back(&modifier, multiplier, source, targets);
+		value_sum.multiply_add_filter(modifier, multiplier, targets);
+	}
 }
 
 void ModifierSum::add_modifier_sum(ModifierSum const& modifier_sum) {
@@ -29,10 +35,22 @@ void ModifierSum::add_modifier_sum(ModifierSum const& modifier_sum) {
 	value_sum += modifier_sum.value_sum;
 }
 
+void ModifierSum::add_modifier_sum_filter_targets(ModifierSum const& modifier_sum, ModifierEffect::target_t targets) {
+	using enum ModifierEffect::target_t;
+
+	for (modifier_entry_t const& modifier_entry : modifier_sum.modifiers) {
+		ModifierEffect::target_t new_targets = modifier_entry.targets & targets;
+
+		if (new_targets != NO_TARGETS) {
+			add_modifier(*modifier_entry.modifier, modifier_entry.source, modifier_entry.multiplier, new_targets);
+		}
+	}
+}
+
 void ModifierSum::add_modifier_sum_exclude_source(ModifierSum const& modifier_sum, modifier_source_t const& excluded_source) {
 	for (modifier_entry_t const& modifier_entry : modifier_sum.modifiers) {
 		if (modifier_entry.source != excluded_source) {
-			add_modifier(*modifier_entry.modifier, modifier_entry.source, modifier_entry.multiplier);
+			add_modifier(*modifier_entry.modifier, modifier_entry.source, modifier_entry.multiplier, modifier_entry.targets);
 		}
 	}
 }
@@ -41,14 +59,18 @@ void ModifierSum::add_modifier_sum_exclude_source(ModifierSum const& modifier_su
 std::vector<ModifierSum::modifier_entry_t> ModifierSum::get_contributing_modifiers(
 	ModifierEffect const& effect
 ) const {
+	using enum ModifierEffect::target_t;
+
 	std::vector<modifier_entry_t> ret;
 
 	for (modifier_entry_t const& modifier_entry : modifiers) {
-		bool effect_found = false;
-		const fixed_point_t value = modifier_entry.modifier->get_effect(effect, &effect_found);
+		if ((modifier_entry.targets & effect.get_targets()) != NO_TARGETS) {
+			bool effect_found = false;
+			const fixed_point_t value = modifier_entry.modifier->get_effect(effect, &effect_found);
 
-		if (effect_found) {
-			ret.push_back(modifier_entry);
+			if (effect_found) {
+				ret.push_back(modifier_entry);
+			}
 		}
 	}
 
diff --git a/src/openvic-simulation/modifier/ModifierSum.hpp b/src/openvic-simulation/modifier/ModifierSum.hpp
index 81ae871..b982ed1 100644
--- a/src/openvic-simulation/modifier/ModifierSum.hpp
+++ b/src/openvic-simulation/modifier/ModifierSum.hpp
@@ -1,6 +1,9 @@
 #pragma once
 
+#include <variant>
+
 #include "openvic-simulation/modifier/Modifier.hpp"
+#include "openvic-simulation/types/fixed_point/FixedPoint.hpp"
 
 namespace OpenVic {
 	struct CountryInstance;
@@ -13,10 +16,12 @@ namespace OpenVic {
 			Modifier const* modifier;
 			fixed_point_t multiplier;
 			modifier_source_t source;
+			ModifierEffect::target_t targets;
 
 			constexpr modifier_entry_t(
-				Modifier const* new_modifier, fixed_point_t new_multiplier, modifier_source_t const& new_source
-			) : modifier { new_modifier }, multiplier { new_multiplier }, source { new_source } {}
+				Modifier const* new_modifier, fixed_point_t new_multiplier, modifier_source_t const& new_source,
+				ModifierEffect::target_t new_targets
+			) : modifier { new_modifier }, multiplier { new_multiplier }, source { new_source }, targets { new_targets } {}
 		};
 
 	private:
@@ -25,7 +30,10 @@ namespace OpenVic {
 
 	public:
 		ModifierSum() = default;
+		ModifierSum(ModifierSum const&) = default;
 		ModifierSum(ModifierSum&&) = default;
+		ModifierSum& operator=(ModifierSum const&) = default;
+		ModifierSum& operator=(ModifierSum&&) = default;
 
 		void clear();
 		bool empty();
@@ -33,8 +41,12 @@ namespace OpenVic {
 		fixed_point_t get_effect(ModifierEffect const& effect, bool* effect_found = nullptr) const;
 		bool has_effect(ModifierEffect const& effect) const;
 
-		void add_modifier(Modifier const& modifier, modifier_source_t source, fixed_point_t multiplier = fixed_point_t::_1());
+		void add_modifier(
+			Modifier const& modifier, modifier_source_t const& source, fixed_point_t multiplier = fixed_point_t::_1(),
+			ModifierEffect::target_t targets = ModifierEffect::target_t::ALL_TARGETS
+		);
 		void add_modifier_sum(ModifierSum const& modifier_sum);
+		void add_modifier_sum_filter_targets(ModifierSum const& modifier_sum, ModifierEffect::target_t targets);
 		void add_modifier_sum_exclude_source(ModifierSum const& modifier_sum, modifier_source_t const& excluded_source);
 
 		std::vector<modifier_entry_t> get_contributing_modifiers(ModifierEffect const& effect) const;
diff --git a/src/openvic-simulation/politics/Rebel.cpp b/src/openvic-simulation/politics/Rebel.cpp
index fef61c0..395df49 100644
--- a/src/openvic-simulation/politics/Rebel.cpp
+++ b/src/openvic-simulation/politics/Rebel.cpp
@@ -175,6 +175,7 @@ bool RebelManager::load_rebels_file(
 
 bool RebelManager::generate_modifiers(ModifierManager& modifier_manager) const {
 	using enum ModifierEffect::format_t;
+	using enum ModifierEffect::target_t;
 
 	bool ret = true;
 
@@ -184,12 +185,14 @@ bool RebelManager::generate_modifiers(ModifierManager& modifier_manager) const {
 	ret &= modifier_manager.register_complex_modifier(identifier);
 
 	ret &= modifier_manager.add_modifier_effect(
-		ModifierManager::get_flat_identifier(identifier, "all"), is_positive_good, PROPORTION_DECIMAL, "TECH_REBEL_ORG_GAIN"
+		ModifierManager::get_flat_identifier(identifier, "all"), is_positive_good, PROPORTION_DECIMAL, COUNTRY,
+		"TECH_REBEL_ORG_GAIN"
 	);
 
 	for (RebelType const& rebel_type : get_rebel_types()) {
 		ret &= modifier_manager.add_modifier_effect(
-			ModifierManager::get_flat_identifier(identifier, rebel_type.get_identifier()), is_positive_good, PROPORTION_DECIMAL,
+			ModifierManager::get_flat_identifier(identifier, rebel_type.get_identifier()), is_positive_good,
+			PROPORTION_DECIMAL, COUNTRY,
 			StringUtils::append_string_views("$", rebel_type.get_identifier(), "_title$ $TECH_REBEL_ORG_GAIN$")
 		);
 	}
diff --git a/src/openvic-simulation/pop/Pop.cpp b/src/openvic-simulation/pop/Pop.cpp
index e89d510..aeaeef5 100644
--- a/src/openvic-simulation/pop/Pop.cpp
+++ b/src/openvic-simulation/pop/Pop.cpp
@@ -654,6 +654,7 @@ bool PopManager::load_pop_bases_into_vector(
 
 bool PopManager::generate_modifiers(ModifierManager& modifier_manager) const {
 	using enum ModifierEffect::format_t;
+	using enum ModifierEffect::target_t;
 
 	bool ret = true;
 
@@ -662,11 +663,12 @@ bool PopManager::generate_modifiers(ModifierManager& modifier_manager) const {
 			std::string_view suffix, bool is_positive_good
 		) -> void {
 			ret &= modifier_manager.add_modifier_effect(
-				StringUtils::append_string_views(strata.get_identifier(), suffix), is_positive_good, PROPORTION_DECIMAL
+				StringUtils::append_string_views(strata.get_identifier(), suffix), is_positive_good, PROPORTION_DECIMAL,
+				COUNTRY
 			);
 		};
 
-		strata_modifier("_income_modifier", true);
+		strata_modifier("_income_modifier", true); // Has no effect in game
 		strata_modifier("_vote", true);
 
 		strata_modifier("_life_needs", false);
diff --git a/src/openvic-simulation/research/Technology.cpp b/src/openvic-simulation/research/Technology.cpp
index a5256f3..3284193 100644
--- a/src/openvic-simulation/research/Technology.cpp
+++ b/src/openvic-simulation/research/Technology.cpp
@@ -197,13 +197,16 @@ bool TechnologyManager::load_technologies_file(
 
 bool TechnologyManager::generate_modifiers(ModifierManager& modifier_manager) const {
 	using enum ModifierEffect::format_t;
+	using enum ModifierEffect::target_t;
 
 	bool ret = true;
 
 	for (TechnologyFolder const& folder : get_technology_folders()) {
 		const std::string modifier_identifier = StringUtils::append_string_views(folder.get_identifier(), "_research_bonus");
 
-		ret &= modifier_manager.add_modifier_effect(modifier_identifier, true, PROPORTION_DECIMAL, modifier_identifier);
+		ret &= modifier_manager.add_modifier_effect(
+			modifier_identifier, true, PROPORTION_DECIMAL, COUNTRY, modifier_identifier
+		);
 	}
 
 	return ret;