4 files changed, 45 insertions, 1 deletions
diff --git a/src/openvic-simulation/map/MapInstance.cpp b/src/openvic-simulation/map/MapInstance.cpp
index d8ec2fb..2875a66 100644
--- a/src/openvic-simulation/map/MapInstance.cpp
+++ b/src/openvic-simulation/map/MapInstance.cpp
@@ -42,6 +42,9 @@ ProvinceDefinition::index_t MapInstance::get_selected_province_index() const {
 }
 
 bool MapInstance::setup(
+#if OV_MODIFIER_CALCULATION_TEST
+	bool ADD_OWNER_CONTRIBUTION,
+#endif
 	BuildingTypeManager const& building_type_manager,
 	decltype(ProvinceInstance::pop_type_distribution)::keys_t const& pop_type_keys,
 	decltype(ProvinceInstance::ideology_distribution)::keys_t const& ideology_keys
@@ -60,7 +63,12 @@ bool MapInstance::setup(
 	province_instances.reserve(map_definition.get_province_definition_count());
 
 	for (ProvinceDefinition const& province : map_definition.get_province_definitions()) {
-		ret &= province_instances.add_item({ province, pop_type_keys, ideology_keys });
+		ret &= province_instances.add_item({
+#if OV_MODIFIER_CALCULATION_TEST
+			ADD_OWNER_CONTRIBUTION,
+#endif
+			province, pop_type_keys, ideology_keys
+		});
 	}
 
 	province_instances.lock();
diff --git a/src/openvic-simulation/map/MapInstance.hpp b/src/openvic-simulation/map/MapInstance.hpp
index e7c623e..d3decb4 100644
--- a/src/openvic-simulation/map/MapInstance.hpp
+++ b/src/openvic-simulation/map/MapInstance.hpp
@@ -6,6 +6,8 @@
 #include "openvic-simulation/types/Date.hpp"
 #include "openvic-simulation/types/IdentifierRegistry.hpp"
 
+#include "openvic-simulation/ModifierCalculationTestToggle.hpp"
+
 namespace OpenVic {
 	struct MapDefinition;
 	struct BuildingTypeManager;
@@ -43,6 +45,9 @@ namespace OpenVic {
 		ProvinceDefinition::index_t get_selected_province_index() const;
 
 		bool setup(
+#if OV_MODIFIER_CALCULATION_TEST
+			bool ADD_OWNER_CONTRIBUTION,
+#endif
 			BuildingTypeManager const& building_type_manager,
 			decltype(ProvinceInstance::pop_type_distribution)::keys_t const& pop_type_keys,
 			decltype(ProvinceInstance::ideology_distribution)::keys_t const& ideology_keys
diff --git a/src/openvic-simulation/map/ProvinceInstance.cpp b/src/openvic-simulation/map/ProvinceInstance.cpp
index cbb23bd..3ef81eb 100644
--- a/src/openvic-simulation/map/ProvinceInstance.cpp
+++ b/src/openvic-simulation/map/ProvinceInstance.cpp
@@ -14,9 +14,15 @@
 using namespace OpenVic;
 
 ProvinceInstance::ProvinceInstance(
+#if OV_MODIFIER_CALCULATION_TEST
+	bool new_ADD_OWNER_CONTRIBUTION,
+#endif
 	ProvinceDefinition const& new_province_definition, decltype(pop_type_distribution)::keys_t const& pop_type_keys,
 	decltype(ideology_distribution)::keys_t const& ideology_keys
 ) : HasIdentifierAndColour { new_province_definition },
+#if OV_MODIFIER_CALCULATION_TEST
+	ADD_OWNER_CONTRIBUTION { new_ADD_OWNER_CONTRIBUTION },
+#endif
 	province_definition { new_province_definition },
 	terrain_type { new_province_definition.get_default_terrain_type() },
 	life_rating { 0 },
@@ -237,7 +243,11 @@ void ProvinceInstance::update_modifier_sum(Date today, StaticModifierCache const
 
 	modifier_sum.add_modifier_nullcheck(terrain_type, province_source);
 
+#if OV_MODIFIER_CALCULATION_TEST
+	if (!ADD_OWNER_CONTRIBUTION) {
+#else
 	if constexpr (!ADD_OWNER_CONTRIBUTION) {
+#endif
 		if (controller != nullptr) {
 			controller->contribute_province_modifier_sum(modifier_sum);
 		}
@@ -249,7 +259,11 @@ void ProvinceInstance::contribute_country_modifier_sum(ModifierSum const& owner_
 }
 
 fixed_point_t ProvinceInstance::get_modifier_effect_value(ModifierEffect const& effect) const {
+#if OV_MODIFIER_CALCULATION_TEST
+	if (ADD_OWNER_CONTRIBUTION) {
+#else
 	if constexpr (ADD_OWNER_CONTRIBUTION) {
+#endif
 		return modifier_sum.get_effect(effect);
 	} else {
 		using enum ModifierEffect::target_t;
@@ -279,7 +293,11 @@ fixed_point_t ProvinceInstance::get_modifier_effect_value_nullcheck(ModifierEffe
 void ProvinceInstance::push_contributing_modifiers(
 	ModifierEffect const& effect, std::vector<ModifierSum::modifier_entry_t>& contributions
 ) const {
+#if OV_MODIFIER_CALCULATION_TEST
+	if (ADD_OWNER_CONTRIBUTION) {
+#else
 	if constexpr (ADD_OWNER_CONTRIBUTION) {
+#endif
 		modifier_sum.push_contributing_modifiers(effect, contributions);
 	} else {
 		using enum ModifierEffect::target_t;
@@ -300,7 +318,11 @@ void ProvinceInstance::push_contributing_modifiers(
 }
 
 std::vector<ModifierSum::modifier_entry_t> ProvinceInstance::get_contributing_modifiers(ModifierEffect const& effect) const {
+#if OV_MODIFIER_CALCULATION_TEST
+	if (ADD_OWNER_CONTRIBUTION) {
+#else
 	if constexpr (ADD_OWNER_CONTRIBUTION) {
+#endif
 		return modifier_sum.get_contributing_modifiers(effect);
 	} else {
 		std::vector<ModifierSum::modifier_entry_t> contributions;
diff --git a/src/openvic-simulation/map/ProvinceInstance.hpp b/src/openvic-simulation/map/ProvinceInstance.hpp
index e7c0326..2794a50 100644
--- a/src/openvic-simulation/map/ProvinceInstance.hpp
+++ b/src/openvic-simulation/map/ProvinceInstance.hpp
@@ -11,6 +11,8 @@
 #include "openvic-simulation/types/HasIdentifier.hpp"
 #include "openvic-simulation/types/OrderedContainers.hpp"
 
+#include "openvic-simulation/ModifierCalculationTestToggle.hpp"
+
 namespace OpenVic {
 	struct MapInstance;
 	struct ProvinceDefinition;
@@ -70,10 +72,14 @@ namespace OpenVic {
 		CountryInstance* PROPERTY(controller);
 		ordered_set<CountryInstance*> PROPERTY(cores);
 
+#if OV_MODIFIER_CALCULATION_TEST
+		const bool ADD_OWNER_CONTRIBUTION;
+#else
 	public:
 		static constexpr bool ADD_OWNER_CONTRIBUTION = true;
 
 	private:
+#endif
 		// The total/resultant modifier affecting this province, including owner country contributions if
 		// ADD_OWNER_CONTRIBUTION is true.
 		ModifierSum PROPERTY(modifier_sum);
@@ -102,6 +108,9 @@ namespace OpenVic {
 		size_t PROPERTY(max_supported_regiments);
 
 		ProvinceInstance(
+#if OV_MODIFIER_CALCULATION_TEST
+			bool new_ADD_OWNER_CONTRIBUTION,
+#endif
 			ProvinceDefinition const& new_province_definition, decltype(pop_type_distribution)::keys_t const& pop_type_keys,
 			decltype(ideology_distribution)::keys_t const& ideology_keys
 		);