refactor jail_audio: namespace Ja, enum class, tipus sense prefix JA_

source/game/game.cpp

@@ -27,7 +27,9 @@
 #include "game/entities/player.h"   // for Player
 #include "game/options.hpp"         // for Options
 #include "game/ui/menu.h"           // for Menu
-struct JA_Sound_t;
+namespace Ja {
+    struct Sound;
+}  // namespace Ja
 
 namespace {
     // Constantes geométricas y temporales compartidas por los helpers de initEnemyFormations
@@ -1521,7 +1523,7 @@ void Game::updateDeath() {
                 // Hace sonar aleatoriamente uno de los 4 sonidos de burbujas
                 if (!demo_.enabled) {
                     const Uint8 INDEX = rand() % 4;
-                    JA_Sound_t *sound[4] = {bubble1_sound_, bubble2_sound_, bubble3_sound_, bubble4_sound_};
+                    Ja::Sound *sound[4] = {bubble1_sound_, bubble2_sound_, bubble3_sound_, bubble4_sound_};
                     Audio::get()->playSound(sound[INDEX]);
                 }
             }