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path: root/src/openvic-simulation/map/MapInstance.cpp
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#include "MapInstance.hpp"

#include "openvic-simulation/history/ProvinceHistory.hpp"
#include "openvic-simulation/map/MapDefinition.hpp"
#include "openvic-simulation/utility/Logger.hpp"

using namespace OpenVic;

MapInstance::MapInstance(MapDefinition const& new_map_definition)
  : map_definition { new_map_definition }, selected_province { nullptr }, highest_province_population { 0 },
   total_map_population { 0 } {}

ProvinceInstance& MapInstance::get_province_instance_from_definition(ProvinceDefinition const& province) {
   return province_instances.get_items()[province.get_index() - 1];
}

ProvinceInstance const& MapInstance::get_province_instance_from_definition(ProvinceDefinition const& province) const {
   return province_instances.get_items()[province.get_index() - 1];
}

void MapInstance::set_selected_province(ProvinceDefinition::index_t index) {
   if (index == ProvinceDefinition::NULL_INDEX) {
      selected_province = nullptr;
   } else {
      selected_province = get_province_instance_by_index(index);
      if (selected_province == nullptr) {
         Logger::error(
            "Trying to set selected province to an invalid index ", index, " (max index is ",
            get_province_instance_count(), ")"
         );
      }
   }
}

ProvinceInstance* MapInstance::get_selected_province() {
   return selected_province;
}

ProvinceDefinition::index_t MapInstance::get_selected_province_index() const {
   return selected_province != nullptr ? selected_province->get_province_definition().get_index()
      : ProvinceDefinition::NULL_INDEX;
}

bool MapInstance::setup(
   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
) {
   if (province_instances_are_locked()) {
      Logger::error("Cannot setup map - province instances are locked!");
      return false;
   }
   if (!map_definition.province_definitions_are_locked()) {
      Logger::error("Cannot setup map - province consts are not locked!");
      return false;
   }

   bool ret = true;

   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 });
   }

   province_instances.lock();

   for (ProvinceInstance& province : province_instances.get_items()) {
      ret &= province.setup(building_type_manager);
   }

   if (get_province_instance_count() != map_definition.get_province_definition_count()) {
      Logger::error(
         "ProvinceInstance count (", get_province_instance_count(), ") does not match ProvinceDefinition count (",
         map_definition.get_province_definition_count(), ")!"
      );
      return false;
   }

   return ret;
}

bool MapInstance::apply_history_to_provinces(
   ProvinceHistoryManager const& history_manager, const Date date, CountryInstanceManager& country_manager,
   IssueManager const& issue_manager
) {
   bool ret = true;

   for (ProvinceInstance& province : province_instances.get_items()) {
      ProvinceDefinition const& province_definition = province.get_province_definition();
      if (!province_definition.is_water()) {
         ProvinceHistoryMap const* history_map = history_manager.get_province_history(&province_definition);

         if (history_map != nullptr) {
            ProvinceHistoryEntry const* pop_history_entry = nullptr;
            ProductionType const* rgo_production_type_nullable = nullptr;

            for (auto const& [entry_date, entry] : history_map->get_entries()) {
               if(entry_date > date) {
                  if(pop_history_entry != nullptr) {
                     break;
                  }
               } else {
                  province.apply_history_to_province(*entry, country_manager);
                  std::optional<ProductionType const*> const& rgo_production_type_nullable_optional = entry->get_rgo_production_type_nullable();
                  if (rgo_production_type_nullable_optional.has_value()) {
                     rgo_production_type_nullable = rgo_production_type_nullable_optional.value();
                  }
               }

               if (!entry->get_pops().empty()) {
                  pop_history_entry = entry.get();
               }
            }

            if (pop_history_entry == nullptr) {
               Logger::warning("No pop history entry for province ",province.get_identifier(), " for date ", date.to_string());
            } else {
               province.add_pop_vec(pop_history_entry->get_pops());
               province.setup_pop_test_values(issue_manager);
            }

            ret&=province.set_rgo_production_type_nullable(rgo_production_type_nullable);
         }
      }
   }

   return ret;
}

void MapInstance::update_modifier_sums(const Date today, StaticModifierCache const& static_modifier_cache) {
   for (ProvinceInstance& province : province_instances.get_items()) {
      province.update_modifier_sum(today, static_modifier_cache);
   }
}

void MapInstance::update_gamestate(const Date today, DefineManager const& define_manager) {
   highest_province_population = 0;
   total_map_population = 0;
   
   for (ProvinceInstance& province : province_instances.get_items()) {
      province.update_gamestate(today, define_manager);

      // Update population stats
      const Pop::pop_size_t province_population = province.get_total_population();
      if (highest_province_population < province_population) {
         highest_province_population = province_population;
      }

      total_map_population += province_population;
   }
   state_manager.update_gamestate();
}

void MapInstance::map_tick(const Date today, ModifierEffectCache const& modifier_effect_cache) {
   for (ProvinceInstance& province : province_instances.get_items()) {
      province.province_tick(today, modifier_effect_cache);
   }
}

void MapInstance::initialise_for_new_game(
   const Date today,
   DefineManager const& define_manager,
   ModifierEffectCache const& modifier_effect_cache
) {
   update_gamestate(today, define_manager);
   for (ProvinceInstance& province : province_instances.get_items()) {
      province.initialise_rgo(modifier_effect_cache);
      province.province_tick(today, modifier_effect_cache);
   }
}