feat(audio): implement audio & main menu music

app/src/main/java/org/vibecoders/moongazer/Game.java

@@ -12,6 +12,7 @@ import java.util.ArrayList;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.vibecoders.moongazer.managers.Assets;
+import org.vibecoders.moongazer.managers.Audio;
 import org.vibecoders.moongazer.scenes.*;
 
 public class Game extends ApplicationAdapter {
@@ -96,10 +97,13 @@ public class Game extends ApplicationAdapter {
     public void dispose() {
         // Save settings
         Settings.saveSettings();
-        // Dispose resources
+        // Dispose scenes
         introScene.dispose();
         mainMenuScene.dispose();
+        // Dispose resources
+        Audio.dispose();
         Assets.dispose();
+        // Dispose batch and stage
         batch.dispose();
         stage.dispose();
         log.debug("Resources disposed");

app/src/main/java/org/vibecoders/moongazer/managers/Assets.java

@@ -129,6 +129,7 @@ public class Assets {
         // "Load" unsupported file types as FileHandle
         loadingThread = new Thread(() -> {
             loadAny("videos/main_menu_background.webm");
+            loadAny("audio/I Once Praised the Day.mp3");
         });
         loadingThread.start();
     }

app/src/main/java/org/vibecoders/moongazer/managers/Audio.java

@@ -0,0 +1,53 @@
+package org.vibecoders.moongazer.managers;
+
+import org.slf4j.Logger;
+import org.vibecoders.moongazer.Settings;
+
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.audio.Music;
+import com.badlogic.gdx.files.FileHandle;
+
+public class Audio {
+    private static final Logger log = org.slf4j.LoggerFactory.getLogger(Audio.class);
+    private static boolean initialized = false;
+    private static Music menuMusic = null;
+
+    public static void init() {
+        if (initialized) {
+            return;
+        }
+        initialized = true;
+        menuMusic = Gdx.audio.newMusic(Assets.getAsset("audio/I Once Praised the Day.mp3", FileHandle.class));
+        log.info("Audio manager initialized");
+    }
+
+    public static void menuMusicSetVolume() {
+        menuMusic.setVolume(Settings.getMusicVolume() * Settings.getMasterVolume());
+    }
+
+    public static void musicSetVolume() {
+        menuMusicSetVolume();
+    }
+
+    public static void menuMusicPlay() {
+        if (!menuMusic.isPlaying()) {
+            menuMusic.setLooping(true);
+            menuMusic.play();
+        }
+    }
+
+    public static void menuMusicStop() {
+        if (menuMusic.isPlaying()) {
+            menuMusic.stop();
+        }
+    }
+
+    public static void dispose() {
+        if (menuMusic != null) {
+            menuMusic.dispose();
+            menuMusic = null;
+        }
+        initialized = false;
+        log.info("Audio manager disposed");
+    }
+}

app/src/main/java/org/vibecoders/moongazer/scenes/Intro.java

@@ -5,6 +5,7 @@ import static org.vibecoders.moongazer.Constants.*;
 import org.vibecoders.moongazer.Game;
 import org.vibecoders.moongazer.State;
 import org.vibecoders.moongazer.managers.Assets;
+import org.vibecoders.moongazer.managers.Audio;
 
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.graphics.Color;
@@ -29,6 +30,8 @@ public class Intro extends Scene {
         logo = Assets.getAsset("icons/logo.png", Texture.class);
         log.info("Starting to load all remaining assets...");
         Assets.loadAll();
+        Audio.init();
+        Audio.musicSetVolume();
         // Create scenes
         game.mainMenuScene = new MainMenu(game);
         game.settingsScene = new SettingsScene(game);
@@ -38,6 +41,7 @@ public class Intro extends Scene {
 
     /**
      * Renders the intro scene.
+     * 
      * @param batch The SpriteBatch to draw with.
      */
     @Override
@@ -54,7 +58,8 @@ public class Intro extends Scene {
             return;
         }
         ScreenUtils.clear(Color.BLACK);
-        // log.debug("Rendering logo at position: ({}, {})", WINDOW_WIDTH / 2 - logo.getWidth() / 4, WINDOW_HEIGHT / 2 - logo.getHeight() / 4);
+        // log.debug("Rendering logo at position: ({}, {})", WINDOW_WIDTH / 2 -
+        // logo.getWidth() / 4, WINDOW_HEIGHT / 2 - logo.getHeight() / 4);
         var currentOpacity = totalTime;
         if (currentOpacity > 1) {
             if (!end) {

app/src/main/java/org/vibecoders/moongazer/scenes/MainMenu.java

@@ -9,6 +9,7 @@ import java.util.Map;
 import org.vibecoders.moongazer.Game;
 import org.vibecoders.moongazer.State;
 import org.vibecoders.moongazer.managers.Assets;
+import org.vibecoders.moongazer.managers.Audio;
 import org.vibecoders.moongazer.ui.UITextButton;
 
 import com.badlogic.gdx.Gdx;
@@ -163,6 +164,7 @@ public class MainMenu extends Scene {
             return;
         videoPlayer.setLooping(true);
         videoPlayer.play();
+        Audio.menuMusicPlay();
         videoPrepared = true;
     }
 

app/src/main/java/org/vibecoders/moongazer/scenes/SettingsScene.java

@@ -16,6 +16,7 @@ import org.vibecoders.moongazer.Game;
 import org.vibecoders.moongazer.State;
 import org.vibecoders.moongazer.Settings;
 import org.vibecoders.moongazer.managers.Assets;
+import org.vibecoders.moongazer.managers.Audio;
 import org.vibecoders.moongazer.ui.UICloseButton;
 import org.vibecoders.moongazer.ui.UITextButton;
 import org.vibecoders.moongazer.ui.UISlider;
@@ -64,12 +65,14 @@ public class SettingsScene extends Scene {
                 masterVolSlider = new UISlider();
                 masterVolSlider.onChanged(() -> {
                     Settings.setMasterVolume(masterVolSlider.getValue());
+                    Audio.musicSetVolume();
                 });
                 row.add(masterVolSlider.slider).width(300).right().padRight(40);
             } else if (volume.equals("Music Volume")) {
                 musicSlider = new UISlider();
                 musicSlider.onChanged(() -> {
                     Settings.setMusicVolume(musicSlider.getValue());
+                    Audio.musicSetVolume();
                 });
                 row.add(musicSlider.slider).width(300).right().padRight(40);
             } else if (volume.equals("SFX Volume")) {