2 files changed, 44 insertions, 0 deletions
diff --git a/src/openvic-simulation/map/Province.cpp b/src/openvic-simulation/map/Province.cpp
index 775c0a4..8dcaa42 100644
--- a/src/openvic-simulation/map/Province.cpp
+++ b/src/openvic-simulation/map/Province.cpp
@@ -137,3 +137,28 @@ void Province::tick(Date const& today) {
 	for (Building& building : buildings.get_items())
 		building.tick(today);
 }
+
+Province::adjacency_t::adjacency_t(index_t new_provice_id, distance_t new_distance, flags_t new_flags) {
+	assert(new_provice_id != Province::NULL_INDEX);
+	province_id = new_provice_id;
+	distance = new_distance;
+	flags = new_flags;
+}
+
+bool Province::is_adjacent_to(index_t province_index) {
+	for (adjacency_t adj : adjacencies)
+		if (adj.province_id == province_index)
+			return true;
+	return false;
+}
+
+bool Province::add_adjacency(index_t province_index, distance_t distance, flags_t flags) {
+	if (is_adjacent_to(province_index))
+		return false;
+	adjacencies.push_back({ province_index, distance, flags });
+	return true;
+}
+
+std::vector<Province::adjacency_t> const& Province::get_adjacencies() const {
+	return adjacencies;
+}
+\ No newline at end of file
diff --git a/src/openvic-simulation/map/Province.hpp b/src/openvic-simulation/map/Province.hpp
index bf407ae..4c89db4 100644
--- a/src/openvic-simulation/map/Province.hpp
+++ b/src/openvic-simulation/map/Province.hpp
@@ -17,6 +17,19 @@ namespace OpenVic {
 
 		using index_t = uint16_t;
 		using life_rating_t = int8_t;
+		using distance_t = uint16_t;
+		using flags_t = uint16_t; 
+
+		struct adjacency_t {
+			friend struct Province;
+
+		private:
+			index_t province_id;
+			distance_t distance;
+			flags_t flags;
+
+			adjacency_t(index_t provice_id, distance_t distance, flags_t flags);
+		};
 
 		static constexpr index_t NULL_INDEX = 0, MAX_INDEX = (1 << (8 * sizeof(index_t))) - 1;
 
@@ -33,6 +46,8 @@ namespace OpenVic {
 		Pop::pop_size_t total_population;
 		distribution_t pop_types, cultures, religions;
 
+		std::vector<adjacency_t> adjacencies;
+
 		Province(const std::string_view new_identifier, colour_t new_colour, index_t new_index);
 
 	public:
@@ -65,5 +80,9 @@ namespace OpenVic {
 
 		void update_state(Date const& today);
 		void tick(Date const& today);
+
+		bool is_adjacent_to(index_t province_index);
+		bool add_adjacency(index_t province_index, distance_t distance, flags_t flags);
+		std::vector<adjacency_t> const& get_adjacencies() const;
 	};
 }