Fix Android Music, Add flip_card sfx

- fix secondary music not playing on Android (let assetmanager unload them on exit)
- fix MapDialog audio bgm fade
- add Flip sfx on RewardActor flip and transform setstate effect

forge-gui-mobile/src/forge/adventure/scene/DuelScene.java

@@ -201,7 +201,7 @@ public class DuelScene extends ForgeScene {
 
     @Override
     public void enter() {
-        GameHUD.getInstance().unloadAudio();
+        GameHUD.getInstance().stopAudio();
         Set<GameType> appliedVariants = new HashSet<>();
         appliedVariants.add(GameType.Constructed);
         AdventurePlayer advPlayer = Current.player();

forge-gui-mobile/src/forge/adventure/stage/GameHUD.java

@@ -309,24 +309,9 @@ public class GameHUD extends Stage {
         }
         if (GameScene.instance().isNotInWorldMap()) {
             SoundSystem.instance.pause();
-            switch (GameScene.instance().getAdventurePlayerLocation(false, false)) {
-                case "capital":
-                case "town":
-                    setAudio(MusicPlaylist.TOWN);
-                    break;
-                case "dungeon":
-                case "cave":
-                    setAudio(MusicPlaylist.CAVE);
-                    break;
-                case "castle":
-                    setAudio(MusicPlaylist.CASTLE);
-                    break;
-                default:
-                    break;
-            }
             playAudio();
         } else {
-            unloadAudio();
+            stopAudio();
             SoundSystem.instance.resume(); // resume World BGM
         }
     }
@@ -334,17 +319,35 @@ public class GameHUD extends Stage {
     private Pair<FileHandle, Music> audio = null;
 
     public void playAudio() {
+        switch (GameScene.instance().getAdventurePlayerLocation(false, false)) {
+            case "capital":
+            case "town":
+                setAudio(MusicPlaylist.TOWN);
+                break;
+            case "dungeon":
+            case "cave":
+                setAudio(MusicPlaylist.CAVE);
+                break;
+            case "castle":
+                setAudio(MusicPlaylist.CASTLE);
+                break;
+            default:
+                break;
+        }
         if (audio != null) {
             audio.getRight().setLooping(true);
             audio.getRight().play();
         }
     }
-
-    public void unloadAudio() {
+    public void fadeAudio(float v) {
+        if (audio != null) {
+            audio.getRight().setVolume(v);
+        }
+    }
+
+    public void stopAudio() {
         if (audio != null) {
-            audio.getRight().setOnCompletionListener(null);
             audio.getRight().stop();
-            Forge.getAssets().manager().unload(audio.getLeft().path());
         }
     }
 
@@ -353,7 +356,7 @@ public class GameHUD extends Stage {
     private void setAudio(MusicPlaylist playlist) {
         if (playlist.equals(currentAudioPlaylist))
             return;
-        unloadAudio();
+        stopAudio();
         audio = getMusic(playlist);
     }
 
@@ -363,9 +366,10 @@ public class GameHUD extends Stage {
         if (music != null) {
             currentAudioPlaylist = playlist;
             return Pair.of(file, music);
+        } else {
+            currentAudioPlaylist = null;
+            return null;
         }
-        currentAudioPlaylist = null;
-        return null;
     }
 
     private void openDeck() {

forge-gui-mobile/src/forge/adventure/util/MapDialog.java

@@ -15,11 +15,11 @@ import forge.Forge;
 import forge.adventure.character.EnemySprite;
 import forge.adventure.data.DialogData;
 import forge.adventure.player.AdventurePlayer;
+import forge.adventure.stage.GameHUD;
 import forge.adventure.stage.MapStage;
 import forge.card.ColorSet;
 import forge.localinstance.properties.ForgePreferences;
 import forge.model.FModel;
-import forge.sound.SoundSystem;
 import forge.util.Localizer;
 import org.apache.commons.lang3.tuple.Pair;
 
@@ -196,7 +196,7 @@ public class MapDialog {
                     fade += 0.1f;
                     if (fade > 1f)
                         fade = 1f;
-                    SoundSystem.instance.fadeModifier(fade);
+                    GameHUD.getInstance().fadeAudio(fade);
                 }
             }, delay);
         }
@@ -211,7 +211,7 @@ public class MapDialog {
                     fade -= 0.1f;
                     if (fade < 0.1f)
                         fade = 0.1f;
-                    SoundSystem.instance.fadeModifier(fade);
+                    GameHUD.getInstance().fadeAudio(fade);
                 }
             }, delay);
         }

forge-gui-mobile/src/forge/adventure/util/RewardActor.java

@@ -41,6 +41,8 @@ import forge.card.CardRenderer;
 import forge.game.card.CardView;
 import forge.gui.GuiBase;
 import forge.item.PaperCard;
+import forge.sound.SoundEffectType;
+import forge.sound.SoundSystem;
 import forge.util.ImageFetcher;
 import forge.util.ImageUtil;
 import org.apache.commons.lang3.StringUtils;
@@ -593,6 +595,7 @@ public class RewardActor extends Actor implements Disposable, ImageFetcher.Callb
             return;
         clicked = true;
         flipProcess = 0;
+        SoundSystem.instance.play(SoundEffectType.FlipCard, false);
     }
 
     public void sold() {