1 files changed, 127 insertions, 0 deletions
diff --git a/src/openvic-simulation/map/Building.cpp b/src/openvic-simulation/map/Building.cpp
new file mode 100644
index 0000000..6e5cf18
--- /dev/null
+++ b/src/openvic-simulation/map/Building.cpp
@@ -0,0 +1,127 @@
+#include "Building.hpp"
+
+#include <cassert>
+
+#include "openvic-simulation/map/Province.hpp"
+#include "openvic-simulation/utility/Logger.hpp"
+
+using namespace OpenVic;
+
+Building::Building(BuildingType const& new_type)
+	: HasIdentifier { new_type.get_identifier() },
+	  type { new_type } {}
+
+bool Building::_can_expand() const {
+	return level < type.get_max_level();
+}
+
+BuildingType const& Building::get_type() const {
+	return type;
+}
+
+Building::level_t Building::get_level() const {
+	return level;
+}
+
+Building::ExpansionState Building::get_expansion_state() const {
+	return expansion_state;
+}
+
+Date const& Building::get_start_date() const {
+	return start;
+}
+
+Date const& Building::get_end_date() const {
+	return end;
+}
+
+float Building::get_expansion_progress() const {
+	return expansion_progress;
+}
+
+bool Building::expand() {
+	if (expansion_state == ExpansionState::CanExpand) {
+		expansion_state = ExpansionState::Preparing;
+		expansion_progress = 0.0f;
+		return true;
+	}
+	return false;
+}
+
+/* REQUIREMENTS:
+ * MAP-71, MAP-74, MAP-77
+ */
+void Building::update_state(Date const& today) {
+	switch (expansion_state) {
+		case ExpansionState::Preparing:
+			start = today;
+			end = start + type.get_build_time();
+			break;
+		case ExpansionState::Expanding:
+			expansion_progress = static_cast<double>(today - start) / static_cast<double>(end - start);
+			break;
+		default: expansion_state = _can_expand() ? ExpansionState::CanExpand : ExpansionState::CannotExpand;
+	}
+}
+
+void Building::tick(Date const& today) {
+	if (expansion_state == ExpansionState::Preparing) {
+		expansion_state = ExpansionState::Expanding;
+	}
+	if (expansion_state == ExpansionState::Expanding) {
+		if (end <= today) {
+			level++;
+			expansion_state = ExpansionState::CannotExpand;
+		}
+	}
+}
+
+BuildingType::BuildingType(const std::string_view new_identifier, Building::level_t new_max_level, Timespan new_build_time)
+	: HasIdentifier { new_identifier },
+	  max_level { new_max_level },
+	  build_time { new_build_time } {
+	assert(max_level >= 0);
+	assert(build_time >= 0);
+}
+
+Building::level_t BuildingType::get_max_level() const {
+	return max_level;
+}
+
+Timespan BuildingType::get_build_time() const {
+	return build_time;
+}
+
+BuildingManager::BuildingManager() : building_types { "building types" } {}
+
+bool BuildingManager::add_building_type(const std::string_view identifier, Building::level_t max_level, Timespan build_time) {
+	if (identifier.empty()) {
+		Logger::error("Invalid building type identifier - empty!");
+		return false;
+	}
+	if (max_level < 0) {
+		Logger::error("Invalid building type max level for ", identifier, ": ", max_level);
+		return false;
+	}
+	if (build_time < 0) {
+		Logger::error("Invalid building type build time for ", identifier, ": ", build_time);
+		return false;
+	}
+	return building_types.add_item({ identifier, max_level, build_time });
+}
+
+bool BuildingManager::generate_province_buildings(Province& province) const {
+	province.reset_buildings();
+	if (!building_types.is_locked()) {
+		Logger::error("Cannot generate buildings until building types are locked!");
+		return false;
+	}
+	bool ret = true;
+	if (!province.is_water()) {
+		for (BuildingType const& type : building_types.get_items()) {
+			ret &= province.add_building({ type });
+		}
+	}
+	province.lock_buildings();
+	return ret;
+}