Add terrain map

	With Directional movement using WASD
	With Directional movement using arrow keys
	With Click-Drag movement using middle mouse button
	With Province identifiers
	With Province shape loading
	With Province rendering
	With Province selection
	With Province overview panel
	With Color lookup texture

2 files changed, 134 insertions, 0 deletions

diff --git a/extension/src/openvic2/Map.cpp b/extension/src/openvic2/Map.cpp
new file mode 100644
index 0000000..d980b88
--- /dev/null
+++ b/extension/src/openvic2/Map.cpp
@@ -0,0 +1,89 @@
+#include "Map.hpp"
+
+#include <cassert>
+#include <sstream>
+#include <iomanip>
+
+using namespace OpenVic2;
+
+Province::Province(index_t new_index, std::string const& new_identifier, colour_t new_colour) :
+	index(new_index), identifier(new_identifier), colour(new_colour) {
+	assert(index != NULL_INDEX);
+	assert(!identifier.empty());
+	assert(colour != NULL_COLOUR);
+}
+
+std::string Province::colour_to_hex_string(colour_t colour) {
+	std::ostringstream stream;
+	stream << std::hex << std::setfill('0') << std::setw(6) << colour;
+	return stream.str();
+}
+
+Province::index_t Province::get_index() const {
+	return index;
+}
+
+std::string const& Province::get_identifier() const {
+	return identifier;
+}
+
+Province::colour_t Province::get_colour() const {
+	return colour;
+}
+
+std::string Province::to_string() const {
+	return "(#" + std::to_string(index) + ", " + identifier + ", 0x" + colour_to_hex_string(colour) + ")";
+}
+
+bool Map::add_province(std::string const& identifier, Province::colour_t colour, std::string& error_message) {
+	if (provinces_locked) {
+		error_message = "The map's province list has already been locked!";
+		return false;
+	}
+	if (provinces.size() >= Province::MAX_INDEX) {
+		error_message = "The map's province list is full - there can be at most " + std::to_string(Province::MAX_INDEX) + " provinces";
+		return false;
+	}
+	if (colour == Province::NULL_COLOUR || colour > Province::MAX_COLOUR) {
+		error_message = "Invalid province colour: " + Province::colour_to_hex_string(colour);
+		return false;
+	}
+	Province new_province{ static_cast<Province::index_t>(provinces.size() + 1), identifier, colour };
+	for (Province const& province : provinces) {
+		if (province.identifier == identifier) {
+			error_message = "Duplicate province identifiers: " + province.to_string() + " and " + new_province.to_string();
+			return false;
+		}
+		if (province.colour == colour) {
+			error_message = "Duplicate province colours: " + province.to_string() + " and " + new_province.to_string();
+			return false;
+		}
+	}
+	provinces.push_back(new_province);
+	error_message = "Added province: " + new_province.to_string();
+	return true;
+}
+
+void Map::lock_provinces() {
+	provinces_locked = true;
+}
+
+size_t Map::get_province_count() const {
+	return provinces.size();
+}
+
+Province* Map::get_province_by_index(Province::index_t index) {
+	return index != Province::NULL_INDEX && index <= provinces.size() ? &provinces[index - 1] : nullptr;
+}
+
+Province* Map::get_province_by_identifier(std::string const& identifier) {
+	for (Province& province : provinces)
+		if (province.identifier == identifier) return &province;
+	return nullptr;
+}
+
+Province* Map::get_province_by_colour(Province::colour_t colour) {
+	for (Province& province : provinces)
+		if (province.colour == colour) return &province;
+	return nullptr;
+}
diff --git a/extension/src/openvic2/Map.hpp b/extension/src/openvic2/Map.hpp
new file mode 100644
index 0000000..365d78b
--- /dev/null
+++ b/extension/src/openvic2/Map.hpp
@@ -0,0 +1,45 @@
+#pragma once
+
+#include <string>
+#include <cstdint>
+#include <vector>
+
+namespace OpenVic2 {
+
+	struct Province {
+		using colour_t = uint32_t;
+		using index_t = uint16_t;
+		friend struct Map;
+		static const colour_t NULL_COLOUR = 0, MAX_COLOUR = 0xFFFFFF;
+		static const index_t NULL_INDEX = 0, MAX_INDEX = 0xFFFF;
+	private:
+		index_t index;
+		std::string identifier;
+		colour_t colour;
+
+		Province(index_t index, std::string const& identifier, colour_t colour);
+	public:
+		static std::string colour_to_hex_string(colour_t colour);
+
+		index_t get_index() const;
+		std::string const& get_identifier() const;
+		colour_t get_colour() const;
+		std::string to_string() const;
+	};
+
+	struct Map {
+	private:
+		std::vector<Province> provinces;
+		bool provinces_locked = false;
+
+	public:
+		bool add_province(std::string const& identifier, Province::colour_t colour, std::string& error_message);
+		void lock_provinces();
+		size_t get_province_count() const;
+
+		Province* get_province_by_index(Province::index_t index);
+		Province* get_province_by_identifier(std::string const& identifier);
+		Province* get_province_by_colour(Province::colour_t colour);
+	};
+
+}