Terrain channel for provinces + generated minimap

22 files changed, 179 insertions, 210 deletions

diff --git a/extension/src/GameSingleton.cpp b/extension/src/GameSingleton.cpp
index 3545928..4d5728a 100644
--- a/extension/src/GameSingleton.cpp
+++ b/extension/src/GameSingleton.cpp
@@ -24,9 +24,10 @@ void GameSingleton::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_province_info_from_index", "index"), &GameSingleton::get_province_info_from_index);
 	ClassDB::bind_method(D_METHOD("get_width"), &GameSingleton::get_width);
 	ClassDB::bind_method(D_METHOD("get_height"), &GameSingleton::get_height);
-	ClassDB::bind_method(D_METHOD("get_province_index_image_subdivisions"), &GameSingleton::get_province_index_image_subdivisions);
-	ClassDB::bind_method(D_METHOD("get_province_index_images"), &GameSingleton::get_province_index_images);
-	ClassDB::bind_method(D_METHOD("get_province_colour_image"), &GameSingleton::get_province_colour_image);
+	ClassDB::bind_method(D_METHOD("get_aspect_ratio"), &GameSingleton::get_aspect_ratio);
+	ClassDB::bind_method(D_METHOD("get_province_shape_image_subdivisions"), &GameSingleton::get_province_shape_image_subdivisions);
+	ClassDB::bind_method(D_METHOD("get_province_shape_texture"), &GameSingleton::get_province_shape_texture);
+	ClassDB::bind_method(D_METHOD("get_province_colour_texture"), &GameSingleton::get_province_colour_texture);
 
 	ClassDB::bind_method(D_METHOD("update_colour_image"), &GameSingleton::update_colour_image);
 	ClassDB::bind_method(D_METHOD("get_mapmode_count"), &GameSingleton::get_mapmode_count);
@@ -232,7 +233,7 @@ Error GameSingleton::load_region_file(String const& file_path) {
 }
 
 Error GameSingleton::load_province_shape_file(String const& file_path) {
-	if (!province_index_images.empty()) {
+	if (province_shape_texture.is_valid()) {
 		UtilityFunctions::push_error("Province shape file has already been loaded, cannot load: ", file_path);
 		return FAILED;
 	}
@@ -259,30 +260,37 @@ Error GameSingleton::load_province_shape_file(String const& file_path) {
 		err = FAILED;
 	}
 	if (err != OK) return err;
-	err = ERR(game_manager.map.generate_province_index_image(image_dims.x, image_dims.y, province_shape_image->get_data().ptr()));
+	err = ERR(game_manager.map.generate_province_shape_image(image_dims.x, image_dims.y, province_shape_image->get_data().ptr()));
 
-	std::vector<Province::index_t> const& province_index_data = game_manager.map.get_province_index_image();
+	std::vector<Map::shape_pixel_t> const& province_shape_data = game_manager.map.get_province_shape_image();
 	const Vector2i divided_dims = image_dims / image_subdivisions;
-	province_index_images.resize(image_subdivisions.x * image_subdivisions.y);
+	Array province_shape_images;
+	province_shape_images.resize(image_subdivisions.x * image_subdivisions.y);
 	for (int32_t v = 0; v < image_subdivisions.y; ++v) {
 		for (int32_t u = 0; u < image_subdivisions.x; ++u) {
 			PackedByteArray index_data_array;
-			index_data_array.resize(divided_dims.x * divided_dims.y * sizeof(Province::index_t));
+			index_data_array.resize(divided_dims.x * divided_dims.y * sizeof(Map::shape_pixel_t));
 
 			for (int32_t y = 0; y < divided_dims.y; ++y)
-				memcpy(index_data_array.ptrw() + y * divided_dims.x * sizeof(Province::index_t),
-					province_index_data.data() + (v * divided_dims.y + y) * image_dims.x + u * divided_dims.x,
-					divided_dims.x * sizeof(Province::index_t));
+				memcpy(index_data_array.ptrw() + y * divided_dims.x * sizeof(Map::shape_pixel_t),
+					province_shape_data.data() + (v * divided_dims.y + y) * image_dims.x + u * divided_dims.x,
+					divided_dims.x * sizeof(Map::shape_pixel_t));
 
-			const int32_t idx = u + v * image_subdivisions.x;
-			province_index_images[idx] = Image::create_from_data(divided_dims.x, divided_dims.y, false, Image::FORMAT_RG8, index_data_array);
-			if (province_index_images[idx].is_null()) {
+			const Ref<Image> province_index_subimage = Image::create_from_data(divided_dims.x, divided_dims.y, false, Image::FORMAT_RGB8, index_data_array);
+			if (province_index_subimage.is_null()) {
 				UtilityFunctions::push_error("Failed to create province index image (", u, ", ", v, ")");
 				err = FAILED;
 			}
+			province_shape_images[u + v * image_subdivisions.x] = province_index_subimage;
 		}
 	}
 
+	province_shape_texture.instantiate();
+	if (province_shape_texture->create_from_images(province_shape_images) != OK) {
+		UtilityFunctions::push_error("");
+		err = FAILED;
+	}
+
 	if (update_colour_image() != OK) err = FAILED;
 
 	return err;
@@ -372,24 +380,25 @@ int32_t GameSingleton::get_height() const {
 	return game_manager.map.get_height();
 }
 
-Vector2i GameSingleton::get_province_index_image_subdivisions() const {
+float GameSingleton::get_aspect_ratio() const {
+	return static_cast<float>(get_width()) / static_cast<float>(get_height());
+}
+
+Vector2i GameSingleton::get_province_shape_image_subdivisions() const {
 	return image_subdivisions;
 }
 
-Array GameSingleton::get_province_index_images() const {
-	Array ret;
-	for (Ref<Image> const& image : province_index_images)
-		ret.append(image);
-	return ret;
+Ref<Texture> GameSingleton::get_province_shape_texture() const {
+	return province_shape_texture;
 }
 
-Ref<Image> GameSingleton::get_province_colour_image() const {
-	return province_colour_image;
+Ref<Texture> GameSingleton::get_province_colour_texture() const {
+	return province_colour_texture;
 }
 
 Error GameSingleton::update_colour_image() {
 	static PackedByteArray colour_data_array;
-	static constexpr int64_t colour_data_array_size = (Province::MAX_INDEX + 1) * 4;
+	static constexpr int64_t colour_data_array_size = (Province::MAX_INDEX + 1) * Map::MAPMODE_COLOUR_SIZE;
 	colour_data_array.resize(colour_data_array_size);
 
 	Error err = OK;
@@ -397,14 +406,17 @@ Error GameSingleton::update_colour_image() {
 		err = FAILED;
 
 	static constexpr int32_t PROVINCE_INDEX_SQRT = 1 << (sizeof(Province::index_t) * 4);
-	if (province_colour_image.is_null())
-		province_colour_image.instantiate();
+	if (province_colour_image.is_null()) province_colour_image.instantiate();
 	province_colour_image->set_data(PROVINCE_INDEX_SQRT, PROVINCE_INDEX_SQRT,
-		false, Image::FORMAT_RGBA8, colour_data_array);
+		false, Image::FORMAT_RGB8, colour_data_array);
 	if (province_colour_image.is_null()) {
 		UtilityFunctions::push_error("Failed to update province colour image");
 		return FAILED;
 	}
+	if (province_colour_texture.is_null())
+		province_colour_texture = ImageTexture::create_from_image(province_colour_image);
+	else
+		province_colour_texture->update(province_colour_image);
 	return err;
 }
 
diff --git a/extension/src/GameSingleton.hpp b/extension/src/GameSingleton.hpp
index 35aec19..d17b950 100644
--- a/extension/src/GameSingleton.hpp
+++ b/extension/src/GameSingleton.hpp
@@ -2,7 +2,8 @@
 
 #include <functional>
 
-#include <godot_cpp/classes/image.hpp>
+#include <godot_cpp/classes/image_texture.hpp>
+#include <godot_cpp/classes/texture2d_array.hpp>
 
 #include "openvic2/GameManager.hpp"
 
@@ -15,8 +16,9 @@ namespace OpenVic2 {
 		GameManager game_manager;
 
 		godot::Vector2i image_subdivisions;
-		std::vector<godot::Ref<godot::Image>> province_index_images;
+		godot::Ref<godot::Texture2DArray> province_shape_texture;
 		godot::Ref<godot::Image> province_colour_image;
+		godot::Ref<godot::ImageTexture> province_colour_texture;
 		Mapmode::index_t mapmode_index = 0;
 
 		godot::Error _parse_province_identifier_entry(godot::String const& identifier, godot::Variant const& entry);
@@ -41,9 +43,10 @@ namespace OpenVic2 {
 		godot::Dictionary get_province_info_from_index(int32_t index) const;
 		int32_t get_width() const;
 		int32_t get_height() const;
-		godot::Vector2i get_province_index_image_subdivisions() const;
-		godot::Array get_province_index_images() const;
-		godot::Ref<godot::Image> get_province_colour_image() const;
+		float get_aspect_ratio() const;
+		godot::Vector2i get_province_shape_image_subdivisions() const;
+		godot::Ref<godot::Texture> get_province_shape_texture() const;
+		godot::Ref<godot::Texture> get_province_colour_texture() const;
 
 		godot::Error update_colour_image();
 		int32_t get_mapmode_count() const;
diff --git a/extension/src/openvic2/map/Map.cpp b/extension/src/openvic2/map/Map.cpp
index b5cf144..428b749 100644
--- a/extension/src/openvic2/map/Map.cpp
+++ b/extension/src/openvic2/map/Map.cpp
@@ -157,7 +157,7 @@ Province const* Map::get_province_by_colour(Province::colour_t colour) const {
 }
 
 Province::index_t Map::get_province_index_at(size_t x, size_t y) const {
-	if (x < width && y < height) return province_index_image[x + y * width];
+	if (x < width && y < height) return province_shape_image[x + y * width].index;
 	return Province::NULL_INDEX;
 }
 
@@ -173,8 +173,8 @@ static Province::colour_t colour_at(uint8_t const* colour_data, int32_t idx) {
 	return (colour_data[idx * 3] << 16) | (colour_data[idx * 3 + 1] << 8) | colour_data[idx * 3 + 2];
 }
 
-return_t Map::generate_province_index_image(size_t new_width, size_t new_height, uint8_t const* colour_data) {
-	if (!province_index_image.empty()) {
+return_t Map::generate_province_shape_image(size_t new_width, size_t new_height, uint8_t const* colour_data) {
+	if (!province_shape_image.empty()) {
 		Logger::error("Province index image has already been generated!");
 		return FAILURE;
 	}
@@ -192,7 +192,7 @@ return_t Map::generate_province_index_image(size_t new_width, size_t new_height,
 	}
 	width = new_width;
 	height = new_height;
-	province_index_image.resize(width * height);
+	province_shape_image.resize(width * height);
 
 	std::vector<bool> province_checklist(provinces.get_item_count());
 	return_t ret = SUCCESS;
@@ -205,22 +205,23 @@ return_t Map::generate_province_index_image(size_t new_width, size_t new_height,
 			if (x > 0) {
 				const int32_t jdx = idx - 1;
 				if (colour_at(colour_data, jdx) == colour) {
-					province_index_image[idx] = province_index_image[jdx];
+					province_shape_image[idx] = province_shape_image[jdx];
 					continue;
 				}
 			}
 			if (y > 0) {
 				const int32_t jdx = idx - width;
 				if (colour_at(colour_data, jdx) == colour) {
-					province_index_image[idx] = province_index_image[jdx];
+					province_shape_image[idx] = province_shape_image[jdx];
 					continue;
 				}
 			}
 			Province const* province = get_province_by_colour(colour);
 			if (province != nullptr) {
 				const Province::index_t index = province->get_index();
-				province_index_image[idx] = index;
 				province_checklist[index - 1] = true;
+				province_shape_image[idx].index = index;
+				province_shape_image[idx].terrain = !province->is_water();
 				continue;
 			}
 			if (unrecognised_colours.find(colour) == unrecognised_colours.end()) {
@@ -228,7 +229,8 @@ return_t Map::generate_province_index_image(size_t new_width, size_t new_height,
 				Logger::error("Unrecognised province colour ", Province::colour_to_hex_string(colour), " at (", x, ", ", y, ")");
 				ret = FAILURE;
 			}
-			province_index_image[idx] = Province::NULL_INDEX;
+			province_shape_image[idx].index = Province::NULL_INDEX;
+			province_shape_image[idx].terrain = 0;
 		}
 	}
 
@@ -249,8 +251,8 @@ size_t Map::get_height() const {
 	return height;
 }
 
-std::vector<Province::index_t> const& Map::get_province_index_image() const {
-	return province_index_image;
+std::vector<Map::shape_pixel_t> const& Map::get_province_shape_image() const {
+	return province_shape_image;
 }
 
 return_t Map::add_mapmode(std::string const& identifier, Mapmode::colour_func_t colour_func) {
@@ -291,13 +293,14 @@ return_t Map::generate_mapmode_colours(Mapmode::index_t index, uint8_t* target)
 		Logger::error("Invalid mapmode index: ", index);
 		return FAILURE;
 	}
-	target += 4; // Skip past Province::NULL_INDEX
+	// Skip past Province::NULL_INDEX
+	for (size_t i = 0; i < MAPMODE_COLOUR_SIZE; ++i)
+		*target++ = 0;
 	for (Province const& province : provinces.get_items()) {
 		const Province::colour_t colour = mapmode->get_colour(*this, province);
 		*target++ = (colour >> 16) & 0xFF;
 		*target++ = (colour >> 8) & 0xFF;
 		*target++ = colour & 0xFF;
-		*target++ = province.is_water() ? 0 : 255;
 	}
 	return SUCCESS;
 }
diff --git a/extension/src/openvic2/map/Map.hpp b/extension/src/openvic2/map/Map.hpp
index ebc23be..dea9b29 100644
--- a/extension/src/openvic2/map/Map.hpp
+++ b/extension/src/openvic2/map/Map.hpp
@@ -25,6 +25,12 @@ namespace OpenVic2 {
 	 * MAP-4
 	 */
 	struct Map {
+		#pragma pack(push, 1)
+		struct shape_pixel_t {
+			Province::index_t index;
+			uint8_t terrain;
+		};
+		#pragma pack(pop)
 	private:
 		IdentifierRegistry<Province> provinces;
 		IdentifierRegistry<Region> regions;
@@ -33,7 +39,7 @@ namespace OpenVic2 {
 		size_t water_province_count = 0;
 
 		size_t width = 0, height = 0;
-		std::vector<Province::index_t> province_index_image;
+		std::vector<shape_pixel_t> province_shape_image;
 	public:
 		Map();
 
@@ -56,16 +62,17 @@ namespace OpenVic2 {
 		Region* get_region_by_identifier(std::string const& identifier);
 		Region const* get_region_by_identifier(std::string const& identifier) const;
 
-		return_t generate_province_index_image(size_t new_width, size_t new_height, uint8_t const* colour_data);
+		return_t generate_province_shape_image(size_t new_width, size_t new_height, uint8_t const* colour_data);
 		size_t get_width() const;
 		size_t get_height() const;
-		std::vector<Province::index_t> const& get_province_index_image() const;
+		std::vector<shape_pixel_t> const& get_province_shape_image() const;
 
 		return_t add_mapmode(std::string const& identifier, Mapmode::colour_func_t colour_func);
 		void lock_mapmodes();
 		size_t get_mapmode_count() const;
 		Mapmode const* get_mapmode_by_index(Mapmode::index_t index) const;
 		Mapmode const* get_mapmode_by_identifier(std::string const& identifier) const;
+		static constexpr size_t MAPMODE_COLOUR_SIZE = 3;
 		return_t generate_mapmode_colours(Mapmode::index_t index, uint8_t* target) const;
 
 		return_t generate_province_buildings(BuildingManager const& manager);
diff --git a/game/art/ui/minimap.png b/game/art/ui/minimap.png
deleted file mode 100644
index 9922b28..0000000
--- a/game/art/ui/minimap.png
+++ /dev/null
diff --git a/game/art/ui/minimap.png.import b/game/art/ui/minimap.png.import
deleted file mode 100644
index 36f22e7..0000000
--- a/game/art/ui/minimap.png.import
+++ /dev/null
@@ -1,34 +0,0 @@
-[remap]
-
-importer="texture"
-type="CompressedTexture2D"
-uid="uid://c0sm1jfu4kyv3"
-path="res://.godot/imported/minimap.png-05ee44469856e77fd05107fe9e259e25.ctex"
-metadata={
-"vram_texture": false
-}
-
-[deps]
-
-source_file="res://art/ui/minimap.png"
-dest_files=["res://.godot/imported/minimap.png-05ee44469856e77fd05107fe9e259e25.ctex"]
-
-[params]
-
-compress/mode=3
-compress/high_quality=false
-compress/lossy_quality=0.7
-compress/hdr_compression=1
-compress/normal_map=2
-compress/channel_pack=0
-mipmaps/generate=false
-mipmaps/limit=-1
-roughness/mode=0
-roughness/src_normal=""
-process/fix_alpha_border=false
-process/premult_alpha=false
-process/normal_map_invert_y=false
-process/hdr_as_srgb=false
-process/hdr_clamp_exposure=false
-process/size_limit=0
-detect_3d/compress_to=0
diff --git a/game/art/ui/minimap_frame.png b/game/art/ui/minimap_frame.png
deleted file mode 100644
index 21aa2ce..0000000
--- a/game/art/ui/minimap_frame.png
+++ /dev/null
diff --git a/game/art/ui/minimap_frame.png.import b/game/art/ui/minimap_frame.png.import
deleted file mode 100644
index 3d2aeee..0000000
--- a/game/art/ui/minimap_frame.png.import
+++ /dev/null
@@ -1,34 +0,0 @@
-[remap]
-
-importer="texture"
-type="CompressedTexture2D"
-uid="uid://vr1hq2stk8ny"
-path="res://.godot/imported/minimap_frame.png-3668393435d2582fb1dc8a9598573e80.ctex"
-metadata={
-"vram_texture": false
-}
-
-[deps]
-
-source_file="res://art/ui/minimap_frame.png"
-dest_files=["res://.godot/imported/minimap_frame.png-3668393435d2582fb1dc8a9598573e80.ctex"]
-
-[params]
-
-compress/mode=3
-compress/high_quality=false
-compress/lossy_quality=0.7
-compress/hdr_compression=1
-compress/normal_map=2
-compress/channel_pack=0
-mipmaps/generate=false
-mipmaps/limit=-1
-roughness/mode=0
-roughness/src_normal=""
-process/fix_alpha_border=false
-process/premult_alpha=false
-process/normal_map_invert_y=false
-process/hdr_as_srgb=false
-process/hdr_clamp_exposure=false
-process/size_limit=0
-detect_3d/compress_to=0
diff --git a/game/project.godot b/game/project.godot
index ff4081e..c10465d 100644
--- a/game/project.godot
+++ b/game/project.godot
@@ -22,10 +22,9 @@ config/project_settings_override.template="user://settings.cfg"
 
 Events="*res://src/Autoload/Events.gd"
 Resolution="*res://src/Autoload/Resolution.gd"
-MusicConductor="*res://src/MusicConductor/MusicConductor.tscn"
 SoundManager="*res://src/Autoload/SoundManager.gd"
+MusicConductor="*res://src/MusicConductor/MusicConductor.tscn"
 Keychain="*res://addons/keychain/Keychain.gd"
-GameDebug="*res://src/Autoload/GameDebug.gd"
 
 [display]
 
diff --git a/game/src/Autoload/Events.gd b/game/src/Autoload/Events.gd
index 7540d3e..f94d338 100644
--- a/game/src/Autoload/Events.gd
+++ b/game/src/Autoload/Events.gd
@@ -1,7 +1,9 @@
 extends Node
 
+var GameDebug = preload("Events/GameDebug.gd").new()
 var Options = preload("Events/Options.gd").new()
 var Localisation = preload("Events/Localisation.gd").new()
+var ShaderManager = preload("Events/ShaderManager.gd").new()
 
 const _province_identifier_file : String = "res://common/map/provinces.json"
 const _water_province_file : String = "res://common/map/water.json"
diff --git a/game/src/Autoload/GameDebug.gd b/game/src/Autoload/Events/GameDebug.gd
index 6f10bf5..4e8931f 100644
--- a/game/src/Autoload/GameDebug.gd
+++ b/game/src/Autoload/Events/GameDebug.gd
@@ -1,8 +1,8 @@
-extends Node
+extends RefCounted
 
 # REQUIREMENTS:
 # * SS-56
-func _ready():
+func _init():
 	for engine_args in OS.get_cmdline_args():
 		match(engine_args):
 			"--game-debug":
@@ -15,6 +15,7 @@ func _ready():
 
 func set_debug_mode(value : bool) -> void:
 	ProjectSettings.set_setting("openvic2/debug/enabled", value)
+	print("Set debug mode to: ", value)
 
 func is_debug_mode() -> bool:
 	return ProjectSettings.get_setting("openvic2/debug/enabled", false)
diff --git a/game/src/Autoload/Events/ShaderManager.gd b/game/src/Autoload/Events/ShaderManager.gd
new file mode 100644
index 0000000..96ed5b4
--- /dev/null
+++ b/game/src/Autoload/Events/ShaderManager.gd
@@ -0,0 +1,40 @@
+extends RefCounted
+
+const param_province_shape : StringName = &"province_shape_tex"
+const param_province_shape_subdivisions : StringName = &"province_shape_subdivisions"
+const param_province_colour : StringName = &"province_colour_tex"
+const param_hover_index : StringName = &"hover_index"
+const param_selected_index : StringName = &"selected_index"
+const param_terrain_tile_factor : StringName = &"terrain_tile_factor"
+
+func set_up_shader(material : Material, add_colour_texture : bool) -> Error:
+	# Shader Material
+	if material == null:
+		push_error("material is null!")
+		return FAILED
+	if not material is ShaderMaterial:
+		push_error("Invalid map mesh material class: ", material.get_class())
+		return FAILED
+	var shader_material : ShaderMaterial = material
+
+	# Province shape texture
+	var province_shape_texture := GameSingleton.get_province_shape_texture()
+	if province_shape_texture == null:
+		push_error("Failed to get province shape texture!")
+		return FAILED
+	shader_material.set_shader_parameter(param_province_shape, province_shape_texture)
+	var subdivisions := GameSingleton.get_province_shape_image_subdivisions()
+	if subdivisions.x < 1 or subdivisions.y < 1:
+		push_error("Invalid province shape image subdivision: ", subdivisions.x, "x", subdivisions.y)
+		return FAILED
+	shader_material.set_shader_parameter(param_province_shape_subdivisions, Vector2(subdivisions))
+
+	if add_colour_texture:
+		# Province colour texture
+		var map_province_colour_texture := GameSingleton.get_province_colour_texture()
+		if map_province_colour_texture == null:
+			push_error("Failed to get province colour image!")
+			return FAILED
+		shader_material.set_shader_parameter(param_province_colour, map_province_colour_texture)
+
+	return OK
diff --git a/game/src/Autoload/Resolution.gd b/game/src/Autoload/Resolution.gd
index e1e788b..35ecbb3 100644
--- a/game/src/Autoload/Resolution.gd
+++ b/game/src/Autoload/Resolution.gd
@@ -62,7 +62,7 @@ func get_resolution_display_name(resolution_value : Vector2i) -> StringName:
 func get_resolution_value_from_string(resolution_string : String) -> Vector2i:
 	if not resolution_string.is_empty():
 		for resolution in _resolutions.values():
-			if resolution_string == resolution.get(name) or resolution_string == resolution.display_name:
+			if resolution_string == resolution.name or resolution_string == resolution.display_name:
 				return resolution.value
 		var result := _regex.search(resolution_string)
 		if result: return Vector2i(result.get_string(1).to_int(), result.get_string(2).to_int())
diff --git a/game/src/GameSession/GameSession.tscn b/game/src/GameSession/GameSession.tscn
index b993acf..98b43dd 100644
--- a/game/src/GameSession/GameSession.tscn
+++ b/game/src/GameSession/GameSession.tscn
@@ -69,7 +69,6 @@ grow_horizontal = 0
 [connection signal="province_selected" from="MapView" to="ProvinceOverviewPanel" method="_on_province_selected"]
 [connection signal="options_button_pressed" from="GameSessionMenu" to="OptionsMenu" method="show"]
 [connection signal="game_session_menu_button_pressed" from="MapControlPanel" to="." method="_on_game_session_menu_button_pressed"]
-[connection signal="mapmode_changed" from="MapControlPanel" to="MapView" method="_update_colour_texture"]
 [connection signal="minimap_clicked" from="MapControlPanel" to="MapView" method="_on_minimap_clicked"]
 [connection signal="mouse_entered" from="MapControlPanel" to="MapView" method="_on_mouse_exited_viewport"]
 [connection signal="mouse_exited" from="MapControlPanel" to="MapView" method="_on_mouse_entered_viewport"]
diff --git a/game/src/GameSession/MapControlPanel.gd b/game/src/GameSession/MapControlPanel.gd
index 73d7e06..508f692 100644
--- a/game/src/GameSession/MapControlPanel.gd
+++ b/game/src/GameSession/MapControlPanel.gd
@@ -1,7 +1,6 @@
 extends PanelContainer
 
 signal game_session_menu_button_pressed
-signal mapmode_changed
 signal map_view_camera_changed(near_left : Vector2, far_left : Vector2, far_right : Vector2, near_right : Vector2)
 signal minimap_clicked(pos_clicked : Vector2)
 signal zoom_in_button_pressed
@@ -40,7 +39,7 @@ func _on_game_session_menu_button_pressed() -> void:
 # * UIFUN-129, UIFUN-133
 func _mapmode_pressed(button : BaseButton) -> void:
 	GameSingleton.set_mapmode(button.tooltip_text)
-	mapmode_changed.emit()
+	GameSingleton.update_colour_image()
 
 func _on_map_view_camera_changed(near_left : Vector2, far_left : Vector2, far_right : Vector2, near_right : Vector2) -> void:
 	map_view_camera_changed.emit(near_left, far_left, far_right, near_right)
diff --git a/game/src/GameSession/MapControlPanel.tscn b/game/src/GameSession/MapControlPanel.tscn
index 18b1c3f..ae4c3dc 100644
--- a/game/src/GameSession/MapControlPanel.tscn
+++ b/game/src/GameSession/MapControlPanel.tscn
@@ -1,9 +1,12 @@
 [gd_scene load_steps=7 format=3 uid="uid://g524p8lr574w"]
 
 [ext_resource type="Script" path="res://src/GameSession/MapControlPanel.gd" id="1_ign64"]
-[ext_resource type="Texture2D" uid="uid://c0sm1jfu4kyv3" path="res://art/ui/minimap.png" id="2_r613r"]
+[ext_resource type="Shader" path="res://src/GameSession/Minimap.gdshader" id="2_rinsg"]
 [ext_resource type="Script" path="res://src/GameSession/Minimap.gd" id="3_s4dml"]
-[ext_resource type="Texture2D" uid="uid://vr1hq2stk8ny" path="res://art/ui/minimap_frame.png" id="4_f1exl"]
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_bhuqb"]
+shader = ExtResource("2_rinsg")
+shader_parameter/province_shape_subdivisions = null
 
 [sub_resource type="InputEventAction" id="InputEventAction_5nck3"]
 action = &"ui_cancel"
@@ -41,28 +44,21 @@ columns = 11
 [node name="Minimap" type="PanelContainer" parent="MapPanelMargin/MapPanelList/MapDisplayList"]
 editor_description = "UI-549"
 layout_mode = 2
+size_flags_horizontal = 4
+size_flags_vertical = 4
 mouse_filter = 1
 
-[node name="MinimapTexture" type="TextureRect" parent="MapPanelMargin/MapPanelList/MapDisplayList/Minimap"]
+[node name="MinimapTexture" type="ColorRect" parent="MapPanelMargin/MapPanelList/MapDisplayList/Minimap"]
 editor_description = "UI-751, FS-338"
+material = SubResource("ShaderMaterial_bhuqb")
 layout_mode = 2
-texture = ExtResource("2_r613r")
+color = Color(0.921569, 0.835294, 0.701961, 1)
 
-[node name="ViewportQuad" type="Control" parent="MapPanelMargin/MapPanelList/MapDisplayList/Minimap"]
+[node name="ViewportQuad" type="Control" parent="MapPanelMargin/MapPanelList/MapDisplayList/Minimap" node_paths=PackedStringArray("_minimap_texture")]
 layout_mode = 2
 mouse_filter = 2
 script = ExtResource("3_s4dml")
-
-[node name="Frame" type="NinePatchRect" parent="MapPanelMargin/MapPanelList/MapDisplayList/Minimap"]
-layout_mode = 2
-texture = ExtResource("4_f1exl")
-draw_center = false
-patch_margin_left = 10
-patch_margin_top = 10
-patch_margin_right = 10
-patch_margin_bottom = 10
-axis_stretch_horizontal = 1
-axis_stretch_vertical = 1
+_minimap_texture = NodePath("../MinimapTexture")
 
 [node name="AuxiliaryPanel" type="VBoxContainer" parent="MapPanelMargin/MapPanelList"]
 editor_description = "UI-761"
diff --git a/game/src/GameSession/MapView.gd b/game/src/GameSession/MapView.gd
index 1b04097..340083f 100644
--- a/game/src/GameSession/MapView.gd
+++ b/game/src/GameSession/MapView.gd
@@ -12,13 +12,6 @@ const _action_zoom_out : StringName = &"map_zoom_out"
 const _action_drag : StringName = &"map_drag"
 const _action_click : StringName = &"map_click"
 
-const _shader_param_province_index : StringName = &"province_index_tex"
-const _shader_param_province_index_subdivisions : StringName = &"province_index_subdivisions"
-const _shader_param_province_colour : StringName = &"province_colour_tex"
-const _shader_param_hover_index : StringName = &"hover_index"
-const _shader_param_selected_index : StringName = &"selected_index"
-const _shader_param_terrain_tile_factor : StringName = &"terrain_tile_factor"
-
 @export var _camera : Camera3D
 
 @export var _cardinal_move_speed : float = 1.0
@@ -41,9 +34,6 @@ var _mouse_over_viewport : bool = true
 @export var _map_mesh_instance : MeshInstance3D
 var _map_mesh : MapMesh
 var _map_shader_material : ShaderMaterial
-var _map_image_size : Vector2
-var _map_province_colour_image : Image
-var _map_province_colour_texture : ImageTexture
 var _map_mesh_corner : Vector2
 var _map_mesh_dims : Vector2
 
@@ -69,46 +59,19 @@ func _ready():
 
 	# Shader Material
 	var map_material := _map_mesh_instance.get_active_material(0)
-	if map_material == null:
-		push_error("Map mesh is missing material!")
-		return
-	if not map_material is ShaderMaterial:
-		push_error("Invalid map mesh material class: ", map_material.get_class())
+	if Events.ShaderManager.set_up_shader(map_material, true) != OK:
+		push_error("Failed to set up map shader")
 		return
 	_map_shader_material = map_material
 
-	# Province index textures
-	var map_province_index_images := GameSingleton.get_province_index_images()
-	if map_province_index_images == null or map_province_index_images.is_empty():
-		push_error("Failed to get province index image!")
-		return
-	var province_index_texture := Texture2DArray.new()
-	if province_index_texture.create_from_images(map_province_index_images) != OK:
-		push_error("Failed to generate province index texture array!")
-		return
-	_map_shader_material.set_shader_parameter(_shader_param_province_index, province_index_texture)
-	var subdivisions := GameSingleton.get_province_index_image_subdivisions()
-	if subdivisions.x < 1 or subdivisions.y < 1:
-		push_error("Invalid province index image subdivision: ", subdivisions.x, "x", subdivisions.y)
-	_map_shader_material.set_shader_parameter(_shader_param_province_index_subdivisions, Vector2(subdivisions))
-
-	# Province colour texture
-	_map_province_colour_image = GameSingleton.get_province_colour_image()
-	if _map_province_colour_image == null:
-		push_error("Failed to get province colour image!")
-		return
-	_map_province_colour_texture = ImageTexture.create_from_image(_map_province_colour_image)
-	_map_shader_material.set_shader_parameter(_shader_param_province_colour, _map_province_colour_texture)
-
 	if not _map_mesh_instance.mesh is MapMesh:
 		push_error("Invalid map mesh class: ", _map_mesh_instance.mesh.get_class(), "(expected MapMesh)")
 		return
 	_map_mesh = _map_mesh_instance.mesh
 
 	# Set map mesh size and get bounds
-	_map_image_size = Vector2(Vector2i(GameSingleton.get_width(), GameSingleton.get_height()))
-	_map_mesh.aspect_ratio = _map_image_size.x / _map_image_size.y
-	_map_shader_material.set_shader_parameter(_shader_param_terrain_tile_factor, _map_image_size.y / 64.0)
+	_map_mesh.aspect_ratio = GameSingleton.get_aspect_ratio()
+	_map_shader_material.set_shader_parameter(Events.ShaderManager.param_terrain_tile_factor, float(GameSingleton.get_height()) / 64.0)
 	var map_mesh_aabb := _map_mesh.get_core_aabb() * _map_mesh_instance.transform
 	_map_mesh_corner = Vector2(
 		min(map_mesh_aabb.position.x, map_mesh_aabb.end.x),
@@ -126,10 +89,6 @@ func _notification(what : int):
 		NOTIFICATION_WM_MOUSE_EXIT: # Mouse out of window
 			_on_mouse_exited_viewport()
 
-func _update_colour_texture() -> void:
-	GameSingleton.update_colour_image()
-	_map_province_colour_texture.update(_map_province_colour_image)
-
 func _world_to_map_coords(pos : Vector3) -> Vector2:
 	return (Vector2(pos.x, pos.z) - _map_mesh_corner) / _map_mesh_dims
 
@@ -159,7 +118,7 @@ func _unhandled_input(event : InputEvent):
 		# Check if the mouse is outside of bounds
 		if _map_mesh.is_valid_uv_coord(_mouse_pos_map):
 			var selected_index := GameSingleton.get_province_index_from_uv_coords(_mouse_pos_map)
-			_map_shader_material.set_shader_parameter(_shader_param_selected_index, selected_index)
+			_map_shader_material.set_shader_parameter(Events.ShaderManager.param_selected_index, selected_index)
 			province_selected.emit(selected_index)
 		else:
 			print("Clicked outside the map!")
@@ -256,7 +215,7 @@ func _update_mouse_map_position() -> void:
 	_mouse_pos_map = _viewport_to_map_coords(_mouse_pos_viewport)
 	var hover_index := GameSingleton.get_province_index_from_uv_coords(_mouse_pos_map)
 	if _mouse_over_viewport:
-		_map_shader_material.set_shader_parameter(_shader_param_hover_index, hover_index)
+		_map_shader_material.set_shader_parameter(Events.ShaderManager.param_hover_index, hover_index)
 
 func _on_mouse_entered_viewport():
 	_mouse_over_viewport = true
diff --git a/game/src/GameSession/MapView.tscn b/game/src/GameSession/MapView.tscn
index c8934c5..efbad4e 100644
--- a/game/src/GameSession/MapView.tscn
+++ b/game/src/GameSession/MapView.tscn
@@ -7,6 +7,7 @@
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_tayeg"]
 render_priority = 0
 shader = ExtResource("1_upocn")
+shader_parameter/province_index_subdivisions = null
 shader_parameter/hover_index = null
 shader_parameter/selected_index = null
 shader_parameter/terrain_tile_factor = null
diff --git a/game/src/GameSession/Minimap.gd b/game/src/GameSession/Minimap.gd
index 25c7cac..05c662b 100644
--- a/game/src/GameSession/Minimap.gd
+++ b/game/src/GameSession/Minimap.gd
@@ -4,8 +4,15 @@ signal minimap_clicked(pos_clicked : Vector2)
 
 const _action_click : StringName = &"map_click"
 
+@export var _minimap_texture : Control
+
 var _viewport_points : PackedVector2Array
 
+func _ready():
+	_minimap_texture.custom_minimum_size = Vector2(GameSingleton.get_aspect_ratio(), 1.0) * 150
+	if Events.ShaderManager.set_up_shader(_minimap_texture.get_material(), false) != OK:
+		push_error("Failed to set up minimap shader")
+
 # REQUIREMENTS
 # * SS-80
 # * UI-752
diff --git a/game/src/GameSession/Minimap.gdshader b/game/src/GameSession/Minimap.gdshader
new file mode 100644
index 0000000..9afd470
--- /dev/null
+++ b/game/src/GameSession/Minimap.gdshader
@@ -0,0 +1,7 @@
+shader_type canvas_item;
+
+#include "ProvinceIndexSampler.gdshaderinc"
+
+void fragment() {
+	COLOR.rgb = mix(COLOR.rgb, vec3(0.5), float(read_uvec3(UV).b != 0u));
+}
diff --git a/game/src/GameSession/ProvinceIndexSampler.gdshaderinc b/game/src/GameSession/ProvinceIndexSampler.gdshaderinc
new file mode 100644
index 0000000..65f73d8
--- /dev/null
+++ b/game/src/GameSession/ProvinceIndexSampler.gdshaderinc
@@ -0,0 +1,18 @@
+
+// Province shape texture
+uniform sampler2DArray province_shape_tex : repeat_enable, filter_nearest;
+// Province shape subdivisions
+uniform vec2 province_shape_subdivisions;
+
+uvec3 vec3_to_uvec3(vec3 v) {
+	return uvec3(v * 255.0);
+}
+uvec3 read_uvec3(vec2 uv) {
+	uv *= province_shape_subdivisions;
+	vec2 subdivision_coords = mod(floor(uv),  province_shape_subdivisions);
+	float idx = subdivision_coords.x + subdivision_coords.y * province_shape_subdivisions.x;
+	return vec3_to_uvec3(texture(province_shape_tex, vec3(uv, idx)).rgb);
+}
+uint uvec2_to_uint(uvec2 v) {
+	return (v.y << 8u) | v.x;
+}
diff --git a/game/src/GameSession/TerrainMap.gdshader b/game/src/GameSession/TerrainMap.gdshader
index f80d6bd..05928f3 100644
--- a/game/src/GameSession/TerrainMap.gdshader
+++ b/game/src/GameSession/TerrainMap.gdshader
@@ -2,42 +2,26 @@ shader_type spatial;
 
 render_mode unshaded;
 
-// Cosmetic farmlands terrain texture
-uniform sampler2D farmlands_tex: source_color, repeat_enable, filter_linear;
-// Province index texture
-uniform sampler2DArray province_index_tex : source_color, repeat_enable, filter_nearest;
-// Province index subdivisions
-uniform vec2 province_index_subdivisions;
+#include "ProvinceIndexSampler.gdshaderinc"
+
 // Province colour texture
 uniform sampler2D province_colour_tex: source_color, repeat_enable, filter_nearest;
 // Index of the mouse over the map mesh
 uniform uint hover_index;
 // Index of the currently selected province
 uniform uint selected_index;
+// Cosmetic farmlands terrain texture
+uniform sampler2D farmlands_tex: source_color, repeat_enable, filter_linear;
 // The number of times the terrain textures should tile vertically
 uniform float terrain_tile_factor;
 
-uvec2 vec2_to_uvec2(vec2 v) {
-	return uvec2(v * 255.0);
-}
-uvec2 read_uvec2(vec2 uv) {
-	uv *= province_index_subdivisions;
-	vec2 subdivision_coords = mod(floor(uv),  province_index_subdivisions);
-	float idx = subdivision_coords.x + subdivision_coords.y * province_index_subdivisions.x;
-	return vec2_to_uvec2(texture(province_index_tex, vec3(uv, idx)).rg);
-}
-uint uvec2_to_uint(uvec2 v) {
-	return (v.y << 8u) | v.x;
-}
-
 const vec3 water_colour = vec3(0, 0, 1);
 
 vec3 get_terrain_colour(vec2 uv, vec2 corner, vec2 half_pixel_size, vec2 terrain_uv) {
-	uvec2 index_split = read_uvec2(fma(corner, half_pixel_size, uv));
-	uint index = uvec2_to_uint(index_split);
-	vec4 province_data = texelFetch(province_colour_tex, ivec2(index_split), 0);
-	vec3 province_colour = province_data.rgb;
-	float is_land = province_data.a;
+	uvec3 province_data = read_uvec3(fma(corner, half_pixel_size, uv));
+	uint index = uvec2_to_uint(province_data.rg);
+	float is_land = float(province_data.b != 0u);
+	vec3 province_colour = texelFetch(province_colour_tex, ivec2(province_data.rg), 0).rgb;
 	vec3 farmlands_colour = texture(farmlands_tex, terrain_uv).rgb;
 	vec3 terrain_colour = mix(water_colour, farmlands_colour, is_land);
 	float mix_val = 0.4 + float(index == hover_index) * 0.2 + float(index == selected_index) * 0.2;
@@ -46,7 +30,7 @@ vec3 get_terrain_colour(vec2 uv, vec2 corner, vec2 half_pixel_size, vec2 terrain
 }
 
 vec3 mix_terrain_colour(vec2 uv) {
-	vec2 map_size = vec2(textureSize(province_index_tex, 0).xy);
+	vec2 map_size = vec2(textureSize(province_shape_tex, 0).xy);
 	vec2 pixel_offset = fract(fma(uv, map_size, vec2(0.5)));
 	vec2 half_pixel_size = 0.49 / map_size;