Working on loading

src/Game.h

@@ -126,18 +126,24 @@ namespace FRG {
 
 		void saveGame(int slot);
 		void loadGame(int slot);
+		void playMusicForLoadedGame();
 		SaveSlotInfo readSlotInfo(int slot) const;
-		// Every campaign's locations, all built at startup (campaign id -> locations).
-		// gameState.locations is a copy of the active campaign's entry.
+		// Locations of the loaded campaign (campaign id -> locations); at most one entry,
+		// empty until the player starts or loads a game. gameState.locations is a copy
+		// of the active campaign's entry.
 		std::unordered_map<std::string, LocationMap> campaignLocations;
 
 		// Builds one location from its config and wires the callbacks every location gets.
 		std::shared_ptr<Location> createLocation(const LocationConfig& config);
 		// Wires the callbacks that span a campaign's locations (teleports, dialogue, HUD...).
 		void wireCampaignLocations(LocationMap& locations);
-		// Queues one loading step per location of `campaign`, plus its wiring step.
-		void queueCampaignBuildSteps(const CampaignConfig& campaign);
-		// Makes `campaignId` the played campaign: its locations and its quest definitions.
+		// Runs `then` with the campaign active. If its locations aren't loaded, they are
+		// built first behind the campaign's loading screen (one loading step per
+		// location) and any other loaded campaign is released.
+		void loadCampaignThen(const std::string& campaignId, std::function<void()> then);
+		// Releases every loaded campaign's locations and the textures only they used.
+		void unloadCampaigns();
+		// Makes a loaded campaign the played one: its locations and its quest definitions.
 		void activateCampaign(const std::string& campaignId);
 		const CampaignConfig& activeCampaign() const;
 
@@ -168,6 +174,7 @@ namespace FRG {
 		void drawUI();
 
 		void drawLoading();
+		void drawLoadingScreenUi();
 
 		void onPointerDown(int64_t fingerId, int eventX, int eventY, int mx, int my);
 		void onPointerUp(int64_t fingerId, int eventX, int eventY, int mx, int my);