Added overlay parchment map and refactored map shader

2 files changed, 20 insertions, 9 deletions

diff --git a/extension/src/openvic-extension/singletons/GameSingleton.cpp b/extension/src/openvic-extension/singletons/GameSingleton.cpp
index 2730352..f9a6b9d 100644
--- a/extension/src/openvic-extension/singletons/GameSingleton.cpp
+++ b/extension/src/openvic-extension/singletons/GameSingleton.cpp
@@ -62,6 +62,7 @@ void GameSingleton::_bind_methods() {
 	OV_BIND_METHOD(GameSingleton::get_mapmode_count);
 	OV_BIND_METHOD(GameSingleton::get_mapmode_identifier);
 	OV_BIND_METHOD(GameSingleton::set_mapmode, { "identifier" });
+	OV_BIND_METHOD(GameSingleton::is_parchment_mapmode_allowed);
 	OV_BIND_METHOD(GameSingleton::get_selected_province_index);
 	OV_BIND_METHOD(GameSingleton::set_selected_province, { "index" });
 
@@ -286,7 +287,7 @@ float GameSingleton::get_map_aspect_ratio() const {
 	return static_cast<float>(get_map_width()) / static_cast<float>(get_map_height());
 }
 
-Ref<Texture> GameSingleton::get_terrain_texture() const {
+Ref<Texture2DArray> GameSingleton::get_terrain_texture() const {
 	return terrain_texture;
 }
 
@@ -309,11 +310,11 @@ Vector2i GameSingleton::get_province_shape_image_subdivisions() const {
 	return image_subdivisions;
 }
 
-Ref<Texture> GameSingleton::get_province_shape_texture() const {
+Ref<Texture2DArray> GameSingleton::get_province_shape_texture() const {
 	return province_shape_texture;
 }
 
-Ref<Texture> GameSingleton::get_province_colour_texture() const {
+Ref<ImageTexture> GameSingleton::get_province_colour_texture() const {
 	return province_colour_texture;
 }
 
@@ -375,6 +376,15 @@ Error GameSingleton::set_mapmode(String const& identifier) {
 	return _update_colour_image();
 }
 
+bool GameSingleton::is_parchment_mapmode_allowed() const {
+	// TODO - parchment bool per mapmode?
+	// TODO - move mapmode index to SIM/Map?
+	/* Disallows parchment mapmode for the cosmetic terrain mapmode */
+	static constexpr std::string_view cosmetic_terrain_mapmode = "mapmode_terrain";
+	Mapmode const* mapmode = game_manager.get_map().get_mapmode_by_index(mapmode_index);
+	return mapmode != nullptr && mapmode->get_identifier() != cosmetic_terrain_mapmode;
+}
+
 int32_t GameSingleton::get_selected_province_index() const {
 	return game_manager.get_map().get_selected_province_index();
 }
@@ -555,10 +565,10 @@ Error GameSingleton::_load_terrain_variants() {
 
 	TypedArray<Image> terrain_images;
 	{
-		// TODO - load "map/terrain/water.dds" instead of using a solid colour (issue is that it's 512x512
-		//        while the texturesheet slices are 256x256, so they can't share a Texture2DArray)
+		/* This is a placeholder image so that we don't have to branch to avoid looking up terrain index 0 (water).
+		 * It should never appear in game, and so is bright red to to make it obvious if it slips through. */
 		const Ref<Image> water_image = Utilities::make_solid_colour_image(
-			{ 0.1f, 0.1f, 0.5f }, slice_size, slice_size, terrain_sheet->get_format()
+			{ 1.0f, 0.0f, 0.0f }, slice_size, slice_size, terrain_sheet->get_format()
 		);
 		ERR_FAIL_NULL_V_EDMSG(water_image, FAILED, "Failed to create water terrain image");
 		terrain_images.append(water_image);
diff --git a/extension/src/openvic-extension/singletons/GameSingleton.hpp b/extension/src/openvic-extension/singletons/GameSingleton.hpp
index 913bdd4..57a2014 100644
--- a/extension/src/openvic-extension/singletons/GameSingleton.hpp
+++ b/extension/src/openvic-extension/singletons/GameSingleton.hpp
@@ -73,7 +73,7 @@ namespace OpenVic {
 		float get_map_aspect_ratio() const;
 
 		/* The cosmetic terrain textures stored in a Texture2DArray. */
-		godot::Ref<godot::Texture> get_terrain_texture() const;
+		godot::Ref<godot::Texture2DArray> get_terrain_texture() const;
 
 		/* The flag image corresponding to the requested country / flag_type
 		 * combination, or nullptr if no such flag can be found. */
@@ -87,14 +87,15 @@ namespace OpenVic {
 		/* The map, encoded in RGB8 with RG representing province index and B representing terrain texture.
 		 * To support a wider range of GPUs, the image is divided so that no piece has a dimension
 		 * greater than 16383 and the pieces are stored in a Texture2DArray. */
-		godot::Ref<godot::Texture> get_province_shape_texture() const;
+		godot::Ref<godot::Texture2DArray> get_province_shape_texture() const;
 
 		/* The base and stripe colours for each province. */
-		godot::Ref<godot::Texture> get_province_colour_texture() const;
+		godot::Ref<godot::ImageTexture> get_province_colour_texture() const;
 
 		int32_t get_mapmode_count() const;
 		godot::String get_mapmode_identifier(int32_t index) const;
 		godot::Error set_mapmode(godot::String const& identifier);
+		bool is_parchment_mapmode_allowed() const;
 		int32_t get_selected_province_index() const;
 		void set_selected_province(int32_t index);