Merge pull request #51 from OpenVicProject/dataloading-tech

Dataloading tech

11 files changed, 450 insertions, 53 deletions

diff --git a/src/openvic-simulation/GameManager.hpp b/src/openvic-simulation/GameManager.hpp
index 5b66c8b..1755900 100644
--- a/src/openvic-simulation/GameManager.hpp
+++ b/src/openvic-simulation/GameManager.hpp
@@ -10,6 +10,8 @@
 #include "openvic-simulation/military/MilitaryManager.hpp"
 #include "openvic-simulation/misc/Define.hpp"
 #include "openvic-simulation/politics/PoliticsManager.hpp"
+#include "openvic-simulation/pop/Pop.hpp"
+#include "openvic-simulation/tech/Technology.hpp"
 
 namespace OpenVic {
 	struct GameManager {
@@ -23,6 +25,7 @@ namespace OpenVic {
 		ModifierManager PROPERTY_REF(modifier_manager);
 		PoliticsManager PROPERTY_REF(politics_manager);
 		HistoryManager PROPERTY_REF(history_manager);
+		TechnologyManager PROPERTY_REF(technology_manager);
 		PopManager PROPERTY_REF(pop_manager);
 		CountryManager PROPERTY_REF(country_manager);
 		UIManager PROPERTY_REF(ui_manager);
diff --git a/src/openvic-simulation/dataloader/Dataloader.cpp b/src/openvic-simulation/dataloader/Dataloader.cpp
index 7ffd68a..7715104 100644
--- a/src/openvic-simulation/dataloader/Dataloader.cpp
+++ b/src/openvic-simulation/dataloader/Dataloader.cpp
@@ -1,14 +1,5 @@
 #include "Dataloader.hpp"
 
-#include <array>
-#include <cstdlib>
-#include <filesystem>
-#include <optional>
-#include <string_view>
-#include <system_error>
-#include <type_traits>
-#include <variant>
-
 #include <openvic-dataloader/csv/Parser.hpp>
 #include <openvic-dataloader/detail/CallbackOStream.hpp>
 #include <openvic-dataloader/v2script/Parser.hpp>
@@ -624,15 +615,80 @@ bool Dataloader::_load_pop_types(
 	return ret;
 }
 
-bool Dataloader::_load_units(UnitManager& unit_manager, GoodManager const& good_manager) const {
+bool Dataloader::_load_units(GameManager& game_manager) const {
 	static constexpr std::string_view units_directory = "units";
-	const bool ret = apply_to_files(
+
+	UnitManager& unit_manager = game_manager.get_military_manager().get_unit_manager(); 
+	bool ret = apply_to_files(
 		lookup_files_in_dir(units_directory, ".txt"),
-		[&unit_manager, &good_manager](fs::path const& file) -> bool {
-			return unit_manager.load_unit_file(good_manager, parse_defines(file).get_file_node());
+		[&game_manager, &unit_manager](fs::path const& file) -> bool {
+			return unit_manager.load_unit_file(game_manager.get_economy_manager().get_good_manager(), parse_defines(file).get_file_node());
 		}
 	);
+	
 	unit_manager.lock_units();
+	
+	if(!unit_manager.generate_modifiers(game_manager.get_modifier_manager())) {
+		Logger::error("Failed to generate unit-based modifiers!");
+		ret &= false;
+	}
+
+	return ret;
+}
+
+bool Dataloader::_load_goods(GameManager& game_manager, std::string_view goods_file) const {
+	GoodManager& good_manager = game_manager.get_economy_manager().get_good_manager();
+	bool ret = good_manager.load_goods_file(parse_defines(lookup_file(goods_file)).get_file_node());
+
+	if(!good_manager.generate_modifiers(game_manager.get_modifier_manager())) {
+		Logger::error("Failed to generate good-based modifiers!");
+		ret &= false;
+	}
+	
+	return ret;
+}
+
+bool Dataloader::_load_technologies(GameManager& game_manager, std::string_view technology_file) const {
+	TechnologyManager& technology_manager = game_manager.get_technology_manager();
+
+	bool ret = true;
+
+	const v2script::Parser technology_file_parser = parse_defines(lookup_file(technology_file));
+
+	if(!technology_manager.load_technology_file_areas(technology_file_parser.get_file_node())) {
+		Logger::error("Failed to load technology areas and folders!");
+		ret = false;
+	}
+
+	ModifierManager& modifier_manager = game_manager.get_modifier_manager();
+
+	if(!technology_manager.generate_modifiers(modifier_manager)) {
+		Logger::error("Failed to generate technollogy-based modifiers!");
+		ret = false;
+	}
+
+	if(!technology_manager.load_technology_file_schools(modifier_manager, technology_file_parser.get_file_node())) {
+		Logger::error("Failed to load technology schools!");
+		ret = false;
+	}
+
+	static constexpr std::string_view technologies_directory = "technologies";
+	if(!apply_to_files(
+		lookup_files_in_dir(technologies_directory, ".txt"),
+		[&game_manager, &technology_manager, &modifier_manager](fs::path const& file) -> bool {
+			return technology_manager.load_technologies_file(
+				modifier_manager,
+				game_manager.get_military_manager().get_unit_manager(),
+				game_manager.get_economy_manager().get_building_manager(),
+				parse_defines(file).get_file_node()
+			);
+		}
+	)) {
+		Logger::error("Failed to load technologies!");
+		ret = false;
+	}
+
+	technology_manager.lock_technologies();
 	return ret;
 }
 
@@ -847,6 +903,7 @@ bool Dataloader::load_defines(GameManager& game_manager) const {
 	static const std::string national_values_file = "common/nationalvalues.txt";
 	static const std::string production_types_file = "common/production_types.txt";
 	static const std::string religion_file = "common/religion.txt";
+	static const std::string technology_file = "common/technology.txt";
 	static const std::string leader_traits_file = "common/traits.txt";
 	static const std::string cb_types_file = "common/cb_types.txt";
 	static const std::string crime_modifiers_file = "common/crime.txt";
@@ -893,15 +950,11 @@ bool Dataloader::load_defines(GameManager& game_manager) const {
 		Logger::error("Failed to load defines!");
 		ret = false;
 	}
-	if (!game_manager.get_economy_manager().get_good_manager().load_goods_file(
-		parse_defines(lookup_file(goods_file)).get_file_node()
-	)) {
+	if (!_load_goods(game_manager, goods_file)) {
 		Logger::error("Failed to load goods!");
 		ret = false;
 	}
-	if (!_load_units(
-		game_manager.get_military_manager().get_unit_manager(), game_manager.get_economy_manager().get_good_manager()
-	)) {
+	if (!_load_units(game_manager)) {
 		Logger::error("Failed to load units!");
 		ret = false;
 	}
@@ -972,6 +1025,9 @@ bool Dataloader::load_defines(GameManager& game_manager) const {
 		Logger::error("Failed to load buildings!");
 		ret = false;
 	}
+	if (!_load_technologies(game_manager, technology_file)) {
+		ret = false;
+	}
 	if (!_load_map_dir(game_manager)) {
 		Logger::error("Failed to load map!");
 		ret = false;
diff --git a/src/openvic-simulation/dataloader/Dataloader.hpp b/src/openvic-simulation/dataloader/Dataloader.hpp
index 5039582..b5ec553 100644
--- a/src/openvic-simulation/dataloader/Dataloader.hpp
+++ b/src/openvic-simulation/dataloader/Dataloader.hpp
@@ -1,10 +1,8 @@
 #pragma once
 
-#include <filesystem>
-#include <unordered_map>
-
 #include <openvic-dataloader/csv/Parser.hpp>
 #include <openvic-dataloader/v2script/Parser.hpp>
+#include <unordered_map> //keep this here or mac builds will fail
 
 #include "openvic-simulation/dataloader/NodeTools.hpp"
 
@@ -15,6 +13,8 @@ namespace OpenVic {
 	class UIManager;
 	struct PopManager;
 	struct UnitManager;
+	struct ModifierManager;
+	struct TechnologyManager;
 	struct GoodManager;
 
 	class Dataloader {
@@ -26,7 +26,9 @@ namespace OpenVic {
 
 		bool _load_interface_files(UIManager& ui_manager) const;
 		bool _load_pop_types(PopManager& pop_manager, UnitManager const& unit_manager, GoodManager const& good_manager) const;
-		bool _load_units(UnitManager& unit_manager, GoodManager const& good_manager) const;
+		bool _load_units(GameManager& game_manager) const;
+		bool _load_goods(GameManager& game_manager, std::string_view goods_file) const;
+		bool _load_technologies(GameManager& game_manager, std::string_view technology_file) const;
 		bool _load_map_dir(GameManager& game_manager) const;
 		bool _load_history(GameManager& game_manager, bool unused_history_file_warnings) const;
 
diff --git a/src/openvic-simulation/economy/Good.cpp b/src/openvic-simulation/economy/Good.cpp
index b068644..739374b 100644
--- a/src/openvic-simulation/economy/Good.cpp
+++ b/src/openvic-simulation/economy/Good.cpp
@@ -95,3 +95,21 @@ bool GoodManager::load_goods_file(ast::NodeCPtr root) {
 	lock_goods();
 	return ret;
 }
+
+#define GOOD_MODIFIER(name) \
+	modifier_manager.register_complex_modifier(name); \
+	for (Good const& good : this->get_goods()) { \
+		std::string modifier_name = name; \
+		modifier_name += "_"; \
+		modifier_name += good.get_identifier(); \
+		ret &= modifier_manager.add_modifier_effect(modifier_name, true, ModifierEffect::format_t::PROPORTION_DECIMAL); \
+	}
+
+
+bool GoodManager::generate_modifiers(ModifierManager& modifier_manager) {
+	bool ret = true;
+	GOOD_MODIFIER("factory_goods_output");
+	GOOD_MODIFIER("rgo_goods_output");
+	GOOD_MODIFIER("rgo_size");
+	return ret;
+}
\ No newline at end of file
diff --git a/src/openvic-simulation/economy/Good.hpp b/src/openvic-simulation/economy/Good.hpp
index faf4b66..8a239d5 100644
--- a/src/openvic-simulation/economy/Good.hpp
+++ b/src/openvic-simulation/economy/Good.hpp
@@ -1,5 +1,6 @@
 #pragma once
 
+#include "openvic-simulation/misc/Modifier.hpp"
 #include "openvic-simulation/types/IdentifierRegistry.hpp"
 
 namespace OpenVic {
@@ -75,5 +76,6 @@ namespace OpenVic {
 
 		void reset_to_defaults();
 		bool load_goods_file(ast::NodeCPtr root);
+		bool generate_modifiers(ModifierManager& modifier_manager);
 	};
 }
diff --git a/src/openvic-simulation/military/Unit.cpp b/src/openvic-simulation/military/Unit.cpp
index fce4082..1c4efcf 100644
--- a/src/openvic-simulation/military/Unit.cpp
+++ b/src/openvic-simulation/military/Unit.cpp
@@ -132,7 +132,7 @@ bool UnitManager::load_unit_file(GoodManager const& good_manager, ast::NodeCPtr
 			bool primary_culture = false;
 			std::string_view sprite_override {}, sprite_mount {}, sprite_mount_attach_node {};
 			fixed_point_t reconnaissance = 0, attack = 0, defence = 0, discipline = 0, support = 0, maneuver = 0, siege = 0;
-
+			
 			ret &= add_key_map_entries(key_map,
 				"primary_culture", ZERO_OR_ONE, expect_bool(assign_variable_callback(primary_culture)),
 				"sprite_override", ZERO_OR_ONE, expect_identifier(assign_variable_callback(sprite_override)),
@@ -146,9 +146,9 @@ bool UnitManager::load_unit_file(GoodManager const& good_manager, ast::NodeCPtr
 				"maneuver", ONE_EXACTLY, expect_fixed_point(assign_variable_callback(maneuver)),
 				"siege", ZERO_OR_ONE, expect_fixed_point(assign_variable_callback(siege))
 			);
-
+			
 			ret &= expect_dictionary_key_map(key_map)(value);
-
+			
 			ret &= add_land_unit(key, UNIT_ARGS, LAND_ARGS);
 
 			return ret;
@@ -180,12 +180,61 @@ bool UnitManager::load_unit_file(GoodManager const& good_manager, ast::NodeCPtr
 			);
 
 			ret &= expect_dictionary_key_map(key_map)(value);
-
+			
 			ret &= add_naval_unit(key, UNIT_ARGS, NAVY_ARGS);
-
+			
 			return ret;
 		}
-		default: Logger::error("Unknown unit type for ", key, ": ", static_cast<int>(type)); return false;
+			default: Logger::error("Unknown unit type for ", key, ": ", static_cast<int>(type)); return false;
 		}
 	})(root);
 }
+
+#define STAT_MODIFIER(name, positive_good, format) \
+	ret &= modifier_manager.add_modifier_effect(base_name + name, positive_good, ModifierEffect::format_t::format)
+
+bool UnitManager::generate_modifiers(ModifierManager& modifier_manager) {
+	std::function<bool(std::string_view, Unit::type_t)> generate_stat_modifiers = [this, &modifier_manager](std::string_view identifier, Unit::type_t type) -> bool {
+		modifier_manager.register_complex_modifier(identifier);
+		std::string base_name = std::string(identifier) + "_";
+		bool ret = true;
+
+		STAT_MODIFIER("default_organisation", true, RAW_DECIMAL);
+		STAT_MODIFIER("maximum_speed", true, RAW_DECIMAL);
+		STAT_MODIFIER("build_time", false, INT);
+		STAT_MODIFIER("supply_consumption", false, PROPORTION_DECIMAL);
+
+		switch (type) {
+		case Unit::type_t::LAND: {
+			STAT_MODIFIER("reconnaissance", true, RAW_DECIMAL);
+			STAT_MODIFIER("attack", true, RAW_DECIMAL);
+			STAT_MODIFIER("defence", true, RAW_DECIMAL);
+			STAT_MODIFIER("discipline", true, PROPORTION_DECIMAL);
+			STAT_MODIFIER("support", true, PROPORTION_DECIMAL);
+			STAT_MODIFIER("maneuver", true, INT);
+			STAT_MODIFIER("siege", true, RAW_DECIMAL);
+			break;
+		}
+        case Unit::type_t::NAVAL: {
+			STAT_MODIFIER("colonial_points", true, INT);
+			STAT_MODIFIER("supply_consumption_score", false, INT);
+			STAT_MODIFIER("hull", true, RAW_DECIMAL);
+			STAT_MODIFIER("gun_power", true, RAW_DECIMAL);
+			STAT_MODIFIER("fire_range", true, RAW_DECIMAL);
+			STAT_MODIFIER("evasion", true, PROPORTION_DECIMAL);
+			STAT_MODIFIER("torpedo_attack", true, RAW_DECIMAL);
+        	break;
+        }
+		}
+
+		return ret;
+	};
+
+	bool ret = true;
+	ret &= generate_stat_modifiers("army_base", Unit::type_t::LAND);
+	ret &= generate_stat_modifiers("navy_base", Unit::type_t::NAVAL);
+	for (Unit const& unit : this->get_units())
+		ret &= generate_stat_modifiers(unit.get_identifier(), unit.get_type());
+
+	return ret;
+}
\ No newline at end of file
diff --git a/src/openvic-simulation/military/Unit.hpp b/src/openvic-simulation/military/Unit.hpp
index 65d0936..17228ce 100644
--- a/src/openvic-simulation/military/Unit.hpp
+++ b/src/openvic-simulation/military/Unit.hpp
@@ -3,6 +3,7 @@
 #include <cstdint>
 #include <string_view>
 
+#include "openvic-simulation/misc/Modifier.hpp"
 #include "openvic-simulation/dataloader/NodeTools.hpp"
 #include "openvic-simulation/economy/Good.hpp"
 #include "openvic-simulation/types/Date.hpp"
@@ -124,5 +125,6 @@ namespace OpenVic {
 		static NodeTools::callback_t<std::string_view> expect_type_str(NodeTools::Callback<Unit::type_t> auto callback);
 
 		bool load_unit_file(GoodManager const& good_manager, ast::NodeCPtr root);
+		bool generate_modifiers(ModifierManager& modifier_manager);
 	};
 }
diff --git a/src/openvic-simulation/misc/Modifier.cpp b/src/openvic-simulation/misc/Modifier.cpp
index 89a411c..86c659b 100644
--- a/src/openvic-simulation/misc/Modifier.cpp
+++ b/src/openvic-simulation/misc/Modifier.cpp
@@ -132,7 +132,7 @@ bool ModifierManager::setup_modifier_effects() {
 	ret &= add_modifier_effect("influence_modifier", true);
 	ret &= add_modifier_effect("issue_change_speed", true);
 	ret &= add_modifier_effect("land_organisation", true);
-	ret &= add_modifier_effect("land_unit_start_experience", true, PERCENTAGE_DECIMAL);
+	ret &= add_modifier_effect("land_unit_start_experience", true, RAW_DECIMAL);
 	ret &= add_modifier_effect("leadership_modifier", true);
 	ret &= add_modifier_effect("loan_interest", false);
 	ret &= add_modifier_effect("max_loan_modifier", true);
@@ -153,7 +153,7 @@ bool ModifierManager::setup_modifier_effects() {
 	ret &= add_modifier_effect("mobilisation_impact", false);
 	ret &= add_modifier_effect("mobilisation_size", true);
 	ret &= add_modifier_effect("naval_organisation", true);
-	ret &= add_modifier_effect("naval_unit_start_experience", true, PERCENTAGE_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);
@@ -180,15 +180,23 @@ bool ModifierManager::setup_modifier_effects() {
 	ret &= add_modifier_effect("social_reform_desire", false);
 	ret &= add_modifier_effect("supply_consumption", false);
 	ret &= add_modifier_effect("tax_efficiency", true);
-	ret &= add_modifier_effect("unit_start_experience", true, PERCENTAGE_DECIMAL);
+	ret &= add_modifier_effect("unit_start_experience", true, RAW_DECIMAL);
 	ret &= add_modifier_effect("war_exhaustion", false);
-
-	// TODO: make technology group modifiers dynamic
-	ret &= add_modifier_effect("army_tech_research_bonus", true);
-	ret &= add_modifier_effect("commerce_tech_research_bonus", true);
-	ret &= add_modifier_effect("culture_tech_research_bonus", true);
-	ret &= add_modifier_effect("industry_tech_research_bonus", true);
-	ret &= add_modifier_effect("navy_tech_research_bonus", true);
+	ret &= add_modifier_effect("reinforce_rate", true);
+	ret &= add_modifier_effect("colonial_migration", true);
+	ret &= add_modifier_effect("supply_range", true);
+	ret &= add_modifier_effect("colonial_points", true, INT);
+	ret &= add_modifier_effect("diplomatic_points", true);
+	ret &= add_modifier_effect("cb_creation_speed", true); //seemingly works the same way as cb_generation_speed_modifier
+	ret &= add_modifier_effect("education_efficiency", true);
+	ret &= add_modifier_effect("increase_research", true);
+	ret &= add_modifier_effect("influence", true);
+	ret &= add_modifier_effect("administrative_efficiency", true);
+	ret &= add_modifier_effect("tax_eff", true);	
+	ret &= add_modifier_effect("military_tactics", true);
+	ret &= add_modifier_effect("dig_in_cap", true, INT);
+	ret &= add_modifier_effect("max_national_focus", true, INT);
+	ret &= add_modifier_effect("regular_experience_level", true, RAW_DECIMAL);
 
 	/* Province Modifier Effects */
 	ret &= add_modifier_effect("assimilation_rate", true);
@@ -235,6 +243,10 @@ bool ModifierManager::setup_modifier_effects() {
 	return ret;
 }
 
+void ModifierManager::register_complex_modifier(std::string_view identifier) {
+	complex_modifiers.emplace(identifier);
+}
+
 bool ModifierManager::load_crime_modifiers(ast::NodeCPtr root) {
 	// TODO - DEV TASK: read crime modifiers
 	return true;
@@ -271,23 +283,38 @@ bool ModifierManager::load_triggered_modifiers(ast::NodeCPtr root) {
 key_value_callback_t ModifierManager::_modifier_effect_callback(
 	ModifierValue& modifier, key_value_callback_t default_callback, ModifierEffectValidator auto effect_validator
 ) const {
+	std::function<bool(ModifierEffect const*, ast::NodeCPtr)> add_modifier_cb = [this, &modifier, effect_validator](ModifierEffect const* effect, ast::NodeCPtr value) -> bool {
+		if (effect_validator(*effect)) {
+			if (!modifier.values.contains(effect)) {
+				return expect_fixed_point(assign_variable_callback(modifier.values[effect]))(value);
+			} else {
+				Logger::error("Duplicate modifier effect: ", effect->get_identifier());
+				return false;
+			}
+		} else {
+			Logger::error("Failed to validate modifier effect: ", effect->get_identifier());
+			return false;
+		}
+	};
 
-	return [this, &modifier, default_callback, effect_validator](std::string_view key, ast::NodeCPtr value) -> bool {
+	return [this, &modifier, default_callback, effect_validator, add_modifier_cb](std::string_view key, ast::NodeCPtr value) -> bool {
 		ModifierEffect const* effect = get_modifier_effect_by_identifier(key);
-		if (effect != nullptr) {
-			if (effect_validator(*effect)) {
-				if (!modifier.values.contains(effect)) {
-					return expect_fixed_point(assign_variable_callback(modifier.values[effect]))(value);
+		if (effect != nullptr && value->is_type<ast::IdentifierNode>()) {
+			return add_modifier_cb(effect, value);
+		} else if (complex_modifiers.contains(key) && value->is_derived_from<ast::AbstractListNode>()) {
+			return expect_dictionary([this, &key, &add_modifier_cb, &default_callback](std::string_view identifier, ast::NodeCPtr node) -> bool {
+				std::string flat_identifier = std::string(key);
+				flat_identifier += "_";
+				flat_identifier += identifier;
+				ModifierEffect const* effect = get_modifier_effect_by_identifier(flat_identifier);
+				if(effect != nullptr) {
+					return add_modifier_cb(effect, node);
 				} else {
-					Logger::error("Duplicate modifier effect: ", key);
+					Logger::error("Could not find flattened modifier: ", flat_identifier);
 					return false;
 				}
-			} else {
-				Logger::error("Failed to validate modifier effect: ", key);
-				return false;
-			}
-		}
-		return default_callback(key, value);
+			})(value);
+		} else return default_callback(key, value);
 	};
 }
 
diff --git a/src/openvic-simulation/misc/Modifier.hpp b/src/openvic-simulation/misc/Modifier.hpp
index c1c532a..9f14f41 100644
--- a/src/openvic-simulation/misc/Modifier.hpp
+++ b/src/openvic-simulation/misc/Modifier.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "openvic-simulation/types/IdentifierRegistry.hpp"
+#include <unordered_set>
 
 namespace OpenVic {
 	struct ModifierManager;
@@ -10,7 +11,7 @@ namespace OpenVic {
 			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 */
+			INT				/* A discrete quantity, e.g. building count limit */
 		};
 
 		friend std::unique_ptr<ModifierEffect> std::make_unique<ModifierEffect>(std::string_view&&, bool&&, format_t&&);
@@ -72,6 +73,7 @@ namespace OpenVic {
 		/* A modifier can have no icon (zero). */
 		const icon_t PROPERTY(icon);
 
+	protected:
 		Modifier(std::string_view new_identifier, ModifierValue&& new_values, icon_t new_icon);
 
 	public:
@@ -98,6 +100,7 @@ namespace OpenVic {
 	private:
 		IdentifierInstanceRegistry<ModifierEffect> modifier_effects;
 		IdentifierRegistry<Modifier> event_modifiers;
+		string_set_t complex_modifiers;
 
 		/* effect_validator takes in ModifierEffect const& */
 		NodeTools::key_value_callback_t _modifier_effect_callback(
@@ -109,13 +112,14 @@ namespace OpenVic {
 		ModifierManager();
 
 		bool add_modifier_effect(
-			std::string_view identifier, bool province_good,
+			std::string_view identifier, bool positive_good,
 			ModifierEffect::format_t format = ModifierEffect::format_t::PROPORTION_DECIMAL
 		);
 		IDENTIFIER_REGISTRY_ACCESSORS(modifier_effect)
 
 		bool add_event_modifier(std::string_view identifier, ModifierValue&& values, Modifier::icon_t icon);
 		IDENTIFIER_REGISTRY_ACCESSORS(event_modifier)
+		void register_complex_modifier(std::string_view identifier);
 
 		bool setup_modifier_effects();
 
diff --git a/src/openvic-simulation/tech/Technology.cpp b/src/openvic-simulation/tech/Technology.cpp
new file mode 100644
index 0000000..aa96fe2
--- /dev/null
+++ b/src/openvic-simulation/tech/Technology.cpp
@@ -0,0 +1,146 @@
+#include "Technology.hpp"
+
+using namespace OpenVic;
+using namespace OpenVic::NodeTools;
+
+TechnologyFolder::TechnologyFolder(std::string_view identifier) : HasIdentifier { identifier } {}
+
+TechnologyArea::TechnologyArea(std::string_view identifier, TechnologyFolder const& folder) : HasIdentifier { identifier }, folder { folder } {}
+
+Technology::Technology(std::string_view identifier, TechnologyArea const& area, year_t year, fixed_point_t cost, bool unciv_military, uint8_t unit, unit_set_t activated_units, building_set_t activated_buildings, ModifierValue&& values)
+	: Modifier { identifier, std::move(values), 0 }, area { area }, year { year }, cost { cost }, unciv_military { unciv_military }, unit { unit }, activated_buildings { std::move(activated_units) }, activated_units { std::move(activated_buildings) } {}
+
+TechnologySchool::TechnologySchool(std::string_view new_identifier, ModifierValue&& new_values) 
+	: Modifier { new_identifier, std::move(new_values), 0 } {} //TODO: school icon
+
+TechnologyManager::TechnologyManager() : technology_folders { "technology folders" }, technology_areas { "technology areas" }, 
+	technologies { "technologies" }, technology_schools { "technology schools" } {}
+
+bool TechnologyManager::add_technology_folder(std::string_view identifier) {
+	if (identifier.empty()) {
+		Logger::error("Invalid technology folder identifier - empty!");
+		return false;
+	}
+
+	return technology_folders.add_item({ identifier });
+}
+
+bool TechnologyManager::add_technology_area(std::string_view identifier, TechnologyFolder const* folder) {
+	if (identifier.empty()) {
+		Logger::error("Invalid technology area identifier - empty!");
+		return false;
+	}
+
+	if (folder == nullptr) {
+		Logger::error("Null folder for technology area \"", identifier, "\"!");
+		return false;
+	}
+
+	return technology_areas.add_item({ identifier, *folder });
+}
+
+bool TechnologyManager::add_technology(std::string_view identifier, TechnologyArea const* area, Technology::year_t year, fixed_point_t cost, bool unciv_military, uint8_t unit, Technology::unit_set_t activated_units, Technology::building_set_t activated_buildings, ModifierValue&& values) {
+	if (identifier.empty()) {
+		Logger::error("Invalid technology identifier - empty!");
+		return false;
+	}
+
+	if (area == nullptr) {
+		Logger::error("Null area for technology \"", identifier, "\"!");
+		return false;
+	}
+
+	return technologies.add_item({ identifier, *area, year, cost, unciv_military, unit, activated_units, activated_buildings, std::move(values) });
+}
+
+bool TechnologyManager::add_technology_school(std::string_view identifier, ModifierValue&& values) {
+	if (identifier.empty()) {
+		Logger::error("Invalid modifier effect identifier - empty!");
+		return false;
+	}
+
+	return technology_schools.add_item({ identifier, std::move(values) });
+}
+
+bool TechnologyManager::load_technology_file_areas(ast::NodeCPtr root) {
+	return expect_dictionary_reserve_length(technology_folders, [this](std::string_view root_key, ast::NodeCPtr root_value) -> bool {
+		if (root_key == "folders") {
+			return expect_dictionary([this](std::string_view folder_key, ast::NodeCPtr folder_value) -> bool {
+				bool ret = add_technology_folder(folder_key);
+				TechnologyFolder const* current_folder = get_technology_folder_by_identifier(folder_key);
+				if (current_folder == nullptr)
+					return false;
+				ret &= expect_list(expect_identifier([this, current_folder](std::string_view area) -> bool {
+					return add_technology_area(area, current_folder);
+				}))(folder_value);
+				return ret;
+			})(root_value);
+			lock_technology_folders();
+			lock_technology_areas();
+		} else if (root_key == "schools") return true; //ignore
+		else return false;
+	})(root);
+}
+
+bool TechnologyManager::load_technology_file_schools(ModifierManager const& modifier_manager, ast::NodeCPtr root) {
+	return expect_dictionary([this, &modifier_manager](std::string_view root_key, ast::NodeCPtr root_value) -> bool {
+		if (root_key == "schools") {
+			return expect_dictionary_reserve_length(technology_schools, [this, &modifier_manager](std::string_view school_key, ast::NodeCPtr school_value) -> bool {
+				ModifierValue modifiers;
+				bool ret = modifier_manager.expect_modifier_value(move_variable_callback(modifiers))(school_value);
+				ret &= add_technology_school(school_key, std::move(modifiers));
+				return ret;
+			})(root_value);
+			lock_technology_schools();
+		} else if (root_key == "folders") return true; //ignore
+		else return false;
+	})(root);
+}
+
+bool TechnologyManager::load_technologies_file(ModifierManager const& modifier_manager, UnitManager const& unit_manager, BuildingManager const& building_manager, ast::NodeCPtr root) {
+	return expect_dictionary_reserve_length(technologies, [this, &modifier_manager, &unit_manager, &building_manager](std::string_view tech_key, ast::NodeCPtr tech_value) -> bool {
+		ModifierValue modifiers;
+		std::string_view area_identifier;
+		Technology::year_t year;
+		fixed_point_t cost;
+		bool unciv_military = false;
+		uint8_t unit = 0; 
+		Technology::unit_set_t activated_units;
+		Technology::building_set_t activated_buildings;
+		
+		bool ret = modifier_manager.expect_modifier_value_and_keys(move_variable_callback(modifiers),
+			"area", ONE_EXACTLY, expect_identifier(assign_variable_callback(area_identifier)),
+			"year", ONE_EXACTLY, expect_uint(assign_variable_callback(year)),
+			"cost", ONE_EXACTLY, expect_fixed_point(assign_variable_callback(cost)),
+			"unciv_military", ZERO_OR_ONE, expect_bool(assign_variable_callback(unciv_military)),
+			"unit", ZERO_OR_ONE, expect_uint(assign_variable_callback(unit)),
+			"activate_unit", ZERO_OR_MORE, expect_identifier([this, &unit_manager, &activated_units](std::string_view identifier) -> bool {
+				activated_units.insert(unit_manager.get_unit_by_identifier(identifier));
+				return true;
+			}),
+			"activate_building", ZERO_OR_MORE, expect_identifier([this, &building_manager, &activated_buildings](std::string_view identifier) -> bool {
+				activated_buildings.insert(building_manager.get_building_type_by_identifier(identifier));
+				return true;
+			}),
+			"ai_chance", ONE_EXACTLY, expect_dictionary([this](std::string_view identifier, ast::NodeCPtr value) -> bool { return true; }) //TODO
+		)(tech_value);
+
+		TechnologyArea const* area = get_technology_area_by_identifier(area_identifier);
+
+		ret &= add_technology(tech_key, area, year, cost, unciv_military, unit, activated_units, activated_buildings, std::move(modifiers));
+		return ret;
+	})(root);
+}
+
+bool TechnologyManager::generate_modifiers(ModifierManager& modifier_manager) {
+	bool ret = true;
+
+	ret &= modifier_manager.add_modifier_effect("unciv_military_modifier", true, ModifierEffect::format_t::PROPORTION_DECIMAL);
+	ret &= modifier_manager.add_modifier_effect("unciv_economic_modifier", true, ModifierEffect::format_t::PROPORTION_DECIMAL);
+
+	for (TechnologyFolder const& folder : get_technology_folders()) {
+		std::string folder_name = std::string(folder.get_identifier()) + "_research_bonus";
+		ret &= modifier_manager.add_modifier_effect(folder_name, true, ModifierEffect::format_t::PROPORTION_DECIMAL);
+	}
+	return ret;
+}
\ No newline at end of file
diff --git a/src/openvic-simulation/tech/Technology.hpp b/src/openvic-simulation/tech/Technology.hpp
new file mode 100644
index 0000000..0aca1f6
--- /dev/null
+++ b/src/openvic-simulation/tech/Technology.hpp
@@ -0,0 +1,88 @@
+#pragma once
+
+#include "openvic-simulation/misc/Modifier.hpp"
+#include "openvic-simulation/types/Date.hpp"
+#include "openvic-simulation/military/Unit.hpp"
+#include "openvic-simulation/economy/BuildingType.hpp"
+#include <cstdint>
+
+namespace OpenVic {
+	struct TechnologyFolder : HasIdentifier {
+		friend struct TechnologyManager;
+
+	private:
+		TechnologyFolder(std::string_view identifier);
+
+	public:
+		TechnologyFolder(TechnologyFolder&&) = default;
+	};
+
+	struct TechnologyArea : HasIdentifier {
+		friend struct TechnologyManager;
+
+	private:
+		TechnologyFolder const& PROPERTY(folder);
+
+		TechnologyArea(std::string_view identifier, TechnologyFolder const& folder);
+
+	public:
+		TechnologyArea(TechnologyArea&&) = default;
+	};
+
+	struct Technology : Modifier {
+		friend struct TechnologyManager;
+		using year_t = Date::year_t;
+		using unit_set_t = std::unordered_set<Unit const*>;
+		using building_set_t = std::unordered_set<BuildingType const*>;
+
+	private:
+		TechnologyArea const& PROPERTY(area);
+		const year_t PROPERTY(year);
+		const fixed_point_t PROPERTY(cost);
+		const bool PROPERTY(unciv_military);
+		const uint8_t PROPERTY(unit);
+		const unit_set_t PROPERTY(activated_buildings);
+		const building_set_t PROPERTY(activated_units);
+
+		//TODO: implement rules/modifiers and ai_chance
+
+		Technology(std::string_view identifier, TechnologyArea const& area, year_t year, fixed_point_t cost, bool unciv_military, uint8_t unit, unit_set_t activated_units, building_set_t activated_buildings, ModifierValue&& values);
+	
+	public:
+		Technology(Technology&&) = default;
+	};
+
+	struct TechnologySchool : Modifier {
+		friend struct TechnologyManager;
+
+	private:
+		TechnologySchool(std::string_view new_identifier, ModifierValue&& new_values);
+	};
+
+	struct TechnologyManager {
+		IdentifierRegistry<TechnologyFolder> technology_folders;
+		IdentifierRegistry<TechnologyArea> technology_areas;
+		IdentifierRegistry<Technology> technologies;
+		IdentifierRegistry<TechnologySchool> technology_schools;
+
+	public:
+		TechnologyManager();
+
+		bool add_technology_folder(std::string_view identifier);
+		IDENTIFIER_REGISTRY_ACCESSORS(technology_folder)
+
+		bool add_technology_area(std::string_view identifier, TechnologyFolder const* folder);
+		IDENTIFIER_REGISTRY_ACCESSORS(technology_area)
+
+		bool add_technology(std::string_view identifier, TechnologyArea const* area, Technology::year_t year, fixed_point_t cost, bool unciv_military, uint8_t unit, Technology::unit_set_t activated_units, Technology::building_set_t activated_buildings, ModifierValue&& values);
+		IDENTIFIER_REGISTRY_ACCESSORS_CUSTOM_PLURAL(technology, technologies)
+
+		bool add_technology_school(std::string_view identifier, ModifierValue&& values); //, Modifier::icon_t icon);
+		IDENTIFIER_REGISTRY_ACCESSORS(technology_school);
+
+		bool load_technology_file_areas(ast::NodeCPtr root); // common/technology.txt
+		bool load_technology_file_schools(ModifierManager const& modifier_manager, ast::NodeCPtr root); // also common/technology.txt
+		bool load_technologies_file(ModifierManager const& modifier_manager, UnitManager const& unit_manager, BuildingManager const& building_manager, ast::NodeCPtr root); // technologies/*.txt
+		bool generate_modifiers(ModifierManager& modifier_manager);
+	};
+}
\ No newline at end of file