added music

src/Game.cpp

@@ -222,6 +222,10 @@ namespace ZL
 			std::cout << "Audio initialization failed" << std::endl;
 		}
 
+		menuManager.onGameStateChanged = [this](GameState newState) {
+			this->updateMusicForGameState(newState);
+		};
+
 		menuManager.setupMainMenu();
 	
 	SDL_ShowCursor(SDL_ENABLE);
@@ -656,17 +660,64 @@ namespace ZL
 
 	}
 
-	void Game::changeLocation(const std::string& newLocationId)
+	void Game::updateMusicForGameState(GameState newState)
 	{
-		if (!currentLocation) {
+		std::string musicTrack;
-			std::cout << "[GAME] No current location" << std::endl;
+
+		switch (newState) {
+			case GameState::MainMenu:
+			case GameState::AboutMenu:
+			case GameState::HelpScreen:
+				musicTrack = "audio/background.wav";
+				break;
+
+			default:
 				return;
 		}
-		std::cout << "[GAME] Changing location to: " << newLocationId << std::endl;
+
-		currentLocation->unload();
+		if (currentMusicTrack == musicTrack) {
-		currentLocation = std::make_shared<Location>(renderer, inventory, newLocationId);
+			return;
-		currentLocation->setup();
-		std::cout << "[GAME] Location changed" << std::endl;
 		}
 
+		currentMusicTrack = musicTrack;
+		if (audioPlayer) {
+			audioPlayer->stopMusicAsync();
+			audioPlayer->playMusicAsync(musicTrack, -1);
+		}
+	}
+
+	void Game::updateMusicForLocation(const std::string& locationId)
+	{
+		std::string musicTrack;
+
+		if (locationId == "default") {
+			musicTrack = "audio/lullaby-music-vol20-186394--online-audio-convert.com.ogg";
+		}
+		else if (locationId == "forest") {
+			musicTrack = "audio/background.wav";
+		}
+		else {
+			musicTrack = "audio/lullaby-music-vol20-186394--online-audio-convert.com.ogg";
+		}
+
+		if (currentMusicTrack == musicTrack) {
+			return;
+		}
+
+		currentMusicTrack = musicTrack;
+		if (audioPlayer) {
+			audioPlayer->stopMusicAsync();
+			audioPlayer->playMusicAsync(musicTrack, -1);
+		}
+	}
+
+	void Game::changeLocation(const std::string& locId)
+	{
+		currentLocation = std::make_unique<Location>(renderer, inventory, locId);
+		currentLocation->setup();
+
+		if (menuManager.getState() == GameState::Gameplay) {
+			updateMusicForLocation(locId);
+		}
+	}
 }  // namespace ZL

src/Game.h

@@ -21,7 +21,8 @@
 #include <unordered_set>
 #include "Location.h"
 #include "AudioPlayerAsync.h" 
-
+#include <cstdint>
+#include <chrono>
 namespace ZL {
 
 	class Game {
@@ -54,14 +55,16 @@ namespace ZL {
 		MenuManager menuManager;
 		
 		void changeLocation(const std::string& locId);
+		void updateMusicForGameState(GameState newState);
+		void updateMusicForLocation(const std::string& locationId);
 		
 	private:
 		bool rightMouseDown = false;
 		int lastMouseX = 0;
 		int lastMouseY = 0;
-		std::unique_ptr<AudioPlayerAsync> audioPlayer;
-
 		int64_t getSyncTimeMs();
+		std::unique_ptr<AudioPlayerAsync> audioPlayer;
+		std::string currentMusicTrack;
 		void processTickCount();
 		void drawScene();
 		void drawUI();

src/Location.h

@@ -10,6 +10,8 @@
 
 #include "ScriptEngine.h"
 #include "dialogue/DialogueSystem.h"
+#include <string>
+
 namespace ZL
 {
 
@@ -45,6 +47,7 @@ namespace ZL
 	public:
 		Location(Renderer& iRenderer, Inventory& iInventory, const std::string& locId = "default");
 
+		std::string getLocationId() const { return locationId; }
 
 		std::shared_ptr<Texture> roomTexture;
 		VertexRenderStruct roomMesh;

src/MenuManager.cpp

@@ -17,9 +17,14 @@ namespace ZL {
 
 	void MenuManager::setupMainMenu()
 	{
+		previousState = currentState;
 		currentState = GameState::MainMenu;
 		uiManager.loadFromFile("resources/config2/main_menu.json", renderer, CONST_ZIP_FILE);
 
+		if (onGameStateChanged) {
+			onGameStateChanged(GameState::MainMenu);
+		}
+
 		uiManager.setButtonCallback("startButton", [this](const std::string&) {
 			startGame();
 		});
@@ -35,9 +40,14 @@ namespace ZL {
 
 	void MenuManager::setupHelpMenu()
 	{
+		previousState = currentState;
 		currentState = GameState::HelpScreen;
 		uiManager.loadFromFile("resources/config2/help.json", renderer, CONST_ZIP_FILE);
 
+		if (onGameStateChanged) {
+			onGameStateChanged(GameState::HelpScreen);
+		}
+
 		uiManager.setButtonCallback("backButton", [this](const std::string&) {
 			enterMainMenu();
 		});
@@ -45,9 +55,14 @@ namespace ZL {
 
 	void MenuManager::setupAboutMenu()
 	{
+		previousState = currentState;
 		currentState = GameState::AboutMenu;
 		uiManager.loadFromFile("resources/config2/about.json", renderer, CONST_ZIP_FILE);
 
+		if (onGameStateChanged) {
+			onGameStateChanged(GameState::AboutMenu);
+		}
+
 		uiManager.setButtonCallback("backButton", [this](const std::string&) {
 			enterMainMenu();
 		});
@@ -70,7 +85,12 @@ namespace ZL {
 
 	void MenuManager::startGame()
 	{
+		previousState = currentState;
 		currentState = GameState::Gameplay;
+
+		if (onGameStateChanged) {
+			onGameStateChanged(GameState::Gameplay);
+		}
 	}
 
 	/*

src/MenuManager.h

@@ -3,6 +3,7 @@
 #include "Environment.h"
 #include "render/TextureManager.h"
 #include "UiManager.h"
+#include <functional>
 
 namespace ZL {
 
@@ -57,6 +58,7 @@ namespace ZL {
 	public:
 		UiManager uiManager;
 		GameState currentState = GameState::MainMenu;
+		GameState previousState = GameState::MainMenu;
 
 		MenuManager(Renderer& iRenderer);
 		
@@ -69,6 +71,8 @@ namespace ZL {
 		void startGame();
 		
 		GameState getState() const { return currentState; }
+		GameState getPreviousState() const { return previousState; }
+		std::function<void(GameState)> onGameStateChanged;
 
 		/*
 		// Returns true for states where Space should render and run (Gameplay, GameOver, ConnectionLost)