Subsistema d'àudio: port de ../aee/core/audio refactoritzat amb namespace Ja, desacoblat d'Options via Audio::Config i extensió de Resource::Cache per preloading de música i sons; pyramid_1.ogg sona a GameScene (v0.15.0)

source/core/audio/audio.cpp

@@ -0,0 +1,213 @@
+#include "core/audio/audio.hpp"
+
+#include <SDL3/SDL.h>  // Para SDL_GetError, SDL_Init
+
+#include <algorithm>  // Para clamp
+#include <iostream>   // Para std::cout
+
+// Implementació de stb_vorbis (ha d'anar ABANS d'incloure jail_audio.hpp).
+// clang-format off
+#undef STB_VORBIS_HEADER_ONLY
+// NOLINTNEXTLINE(bugprone-suspicious-include)
+#include "external/stb_vorbis.c"
+// stb_vorbis.c filtra les macros L, C i R (i PLAYBACK_*) al TU. Les netegem
+// perquè xocarien amb noms de paràmetres de plantilla en altres headers.
+#undef L
+#undef C
+#undef R
+#undef PLAYBACK_MONO
+#undef PLAYBACK_LEFT
+#undef PLAYBACK_RIGHT
+// clang-format on
+
+#include "core/audio/audio_adapter.hpp"  // Para AudioResource::getMusic/getSound
+#include "core/audio/jail_audio.hpp"     // Para Ja::* (engine jailgames)
+
+// Singleton
+std::unique_ptr<Audio> Audio::instance;
+
+// Inicialitza la instància única del singleton amb la configuració rebuda
+void Audio::init(const Config& config) { Audio::instance = std::unique_ptr<Audio>(new Audio(config)); }
+
+// Libera la instancia
+void Audio::destroy() { Audio::instance.reset(); }
+
+// Obtiene la instancia
+auto Audio::get() -> Audio* { return Audio::instance.get(); }
+
+// Constructor
+Audio::Audio(const Config& config)
+    : config_(config) { initSDLAudio(); }
+
+// Destructor
+Audio::~Audio() {
+    Ja::quit();
+}
+
+// Método principal
+void Audio::update() {
+    Ja::update();
+
+    // Sincronitzar estat: detectar quan la música s'ha parat (p. ex. fade-out completat)
+    if (instance && instance->music_.state == MusicState::PLAYING && Ja::getMusicState() != Ja::MusicState::PLAYING) {
+        instance->music_.state = MusicState::STOPPED;
+    }
+}
+
+// Reproduce la música por nombre (con crossfade opcional)
+void Audio::playMusic(const std::string& name, const int loop, const int crossfade_ms) {
+    const bool NEW_LOOP = (loop != 0);
+
+    // Si ja sona exactament la mateixa pista i mateix mode loop, no fem res
+    if (music_.state == MusicState::PLAYING && music_.name == name && music_.loop == NEW_LOOP) {
+        return;
+    }
+
+    if (!music_enabled_) { return; }
+
+    auto* resource = AudioResource::getMusic(name);
+    if (resource == nullptr) { return; }
+
+    if (crossfade_ms > 0 && music_.state == MusicState::PLAYING) {
+        Ja::crossfadeMusic(resource, crossfade_ms, loop);
+    } else {
+        if (music_.state == MusicState::PLAYING) {
+            Ja::stopMusic();
+        }
+        Ja::playMusic(resource, loop);
+    }
+
+    music_.name = name;
+    music_.loop = NEW_LOOP;
+    music_.state = MusicState::PLAYING;
+}
+
+// Reproduce la música por puntero (con crossfade opcional)
+void Audio::playMusic(Ja::Music* music, const int loop, const int crossfade_ms) {
+    if (!music_enabled_ || music == nullptr) { return; }
+
+    if (crossfade_ms > 0 && music_.state == MusicState::PLAYING) {
+        Ja::crossfadeMusic(music, crossfade_ms, loop);
+    } else {
+        if (music_.state == MusicState::PLAYING) {
+            Ja::stopMusic();
+        }
+        Ja::playMusic(music, loop);
+    }
+
+    music_.name.clear();  // nom desconegut quan es passa per punter
+    music_.loop = (loop != 0);
+    music_.state = MusicState::PLAYING;
+}
+
+// Pausa la música
+void Audio::pauseMusic() {
+    if (music_enabled_ && music_.state == MusicState::PLAYING) {
+        Ja::pauseMusic();
+        music_.state = MusicState::PAUSED;
+    }
+}
+
+// Continua la música pausada
+void Audio::resumeMusic() {
+    if (music_enabled_ && music_.state == MusicState::PAUSED) {
+        Ja::resumeMusic();
+        music_.state = MusicState::PLAYING;
+    }
+}
+
+// Detiene la música
+void Audio::stopMusic() {
+    if (music_enabled_) {
+        Ja::stopMusic();
+        music_.state = MusicState::STOPPED;
+    }
+}
+
+// Reproduce un sonido por nombre
+void Audio::playSound(const std::string& name, Group group) const {
+    if (sound_enabled_) {
+        Ja::playSound(AudioResource::getSound(name), 0, static_cast<int>(group));
+    }
+}
+
+// Reproduce un sonido por puntero directo
+void Audio::playSound(Ja::Sound* sound, Group group) const {
+    if (sound_enabled_ && sound != nullptr) {
+        Ja::playSound(sound, 0, static_cast<int>(group));
+    }
+}
+
+// Detiene todos los sonidos
+void Audio::stopAllSounds() const {
+    if (sound_enabled_) {
+        Ja::stopChannel(-1);
+    }
+}
+
+// Realiza un fundido de salida de la música
+void Audio::fadeOutMusic(int milliseconds) const {
+    if (music_enabled_ && getRealMusicState() == MusicState::PLAYING) {
+        Ja::fadeOutMusic(milliseconds);
+    }
+}
+
+// Consulta directament l'estat real de la música a jail_audio
+auto Audio::getRealMusicState() -> MusicState {
+    const Ja::MusicState JA_STATE = Ja::getMusicState();
+    switch (JA_STATE) {
+        case Ja::MusicState::PLAYING:
+            return MusicState::PLAYING;
+        case Ja::MusicState::PAUSED:
+            return MusicState::PAUSED;
+        case Ja::MusicState::STOPPED:
+        case Ja::MusicState::INVALID:
+        case Ja::MusicState::DISABLED:
+        default:
+            return MusicState::STOPPED;
+    }
+}
+
+// Estableix el volum dels sons (float 0.0..1.0)
+void Audio::setSoundVolume(float sound_volume, Group group) const {
+    sound_volume = std::clamp(sound_volume, MIN_VOLUME, MAX_VOLUME);
+    const bool ACTIVE = enabled_ && sound_enabled_;
+    const float CONVERTED_VOLUME = ACTIVE ? sound_volume * config_.volume : 0.0F;
+    Ja::setSoundVolume(CONVERTED_VOLUME, static_cast<int>(group));
+}
+
+// Estableix el volum de la música (float 0.0..1.0)
+void Audio::setMusicVolume(float music_volume) const {
+    music_volume = std::clamp(music_volume, MIN_VOLUME, MAX_VOLUME);
+    const bool ACTIVE = enabled_ && music_enabled_;
+    const float CONVERTED_VOLUME = ACTIVE ? music_volume * config_.volume : 0.0F;
+    Ja::setMusicVolume(CONVERTED_VOLUME);
+}
+
+// Aplica una nova configuració (substitueix la cache i reaplica enables/volums)
+void Audio::applySettings(const Config& config) {
+    config_ = config;
+    sound_enabled_ = config_.sound_enabled;
+    music_enabled_ = config_.music_enabled;
+    enable(config_.enabled);
+}
+
+// Estableix l'estat general
+void Audio::enable(bool value) {
+    enabled_ = value;
+
+    setSoundVolume(enabled_ ? config_.sound_volume : MIN_VOLUME);
+    setMusicVolume(enabled_ ? config_.music_volume : MIN_VOLUME);
+}
+
+// Inicialitza SDL Audio
+void Audio::initSDLAudio() {
+    if (!SDL_Init(SDL_INIT_AUDIO)) {
+        std::cout << "SDL_AUDIO could not initialize! SDL Error: " << SDL_GetError() << '\n';
+    } else {
+        Ja::init(FREQUENCY, SDL_AUDIO_S16LE, 2);
+        sound_enabled_ = config_.sound_enabled;
+        music_enabled_ = config_.music_enabled;
+        enable(config_.enabled);
+    }
+}

source/core/audio/audio.hpp

@@ -0,0 +1,141 @@
+#pragma once
+
+#include <cmath>    // Para std::lround
+#include <cstdint>  // Para int8_t, uint8_t
+#include <memory>   // Para std::unique_ptr
+#include <string>   // Para string
+#include <utility>  // Para move
+
+// Forward-declares per no incloure core/audio/jail_audio.hpp al header (conté
+// l'engine complet de streaming amb stb_vorbis).
+namespace Ja {
+    struct Music;
+    struct Sound;
+}  // namespace Ja
+
+// --- Clase Audio: gestor de audio (singleton) ---
+// Port del subsistema d'àudio del projecte ../aee, desacoblat d'Options:
+// la configuració entra per la struct Audio::Config a init()/applySettings(),
+// en lloc de llegir directament Options::audio. Això deixa audio.cpp independent
+// del layout d'Options i permet substituir la font de configuració.
+//
+// Els volums es manegen internament com a float 0.0–1.0; la capa de
+// presentació (menús, notificacions) usa les helpers toPercent/fromPercent
+// per mostrar 0–100 a l'usuari.
+class Audio {
+   public:
+    // --- Configuració injectada (Options la construeix via buildAudioConfig) ---
+    struct Config {
+        bool enabled{true};
+        float volume{1.0F};  // Master 0..1
+        bool music_enabled{true};
+        float music_volume{0.8F};
+        bool sound_enabled{true};
+        float sound_volume{1.0F};
+    };
+
+    // --- Enums ---
+    enum class Group : std::int8_t {
+        ALL = -1,      // Todos los grupos
+        GAME = 0,      // Sonidos del juego
+        INTERFACE = 1  // Sonidos de la interfaz
+    };
+
+    enum class MusicState : std::uint8_t {
+        PLAYING,  // Reproduciendo música
+        PAUSED,   // Música pausada
+        STOPPED,  // Música detenida
+    };
+
+    // --- Constantes ---
+    static constexpr float MAX_VOLUME = 1.0F;          // Volumen máximo (float 0..1)
+    static constexpr float MIN_VOLUME = 0.0F;          // Volumen mínimo (float 0..1)
+    static constexpr float VOLUME_STEP = 0.05F;        // Pas estàndard per a UI (5%)
+    static constexpr int FREQUENCY = 48000;            // Frecuencia de audio
+    static constexpr int DEFAULT_CROSSFADE_MS = 1500;  // Duració del crossfade per defecte (ms)
+
+    // --- Singleton ---
+    static void init(const Config& config);  // Inicialitza amb la configuració rebuda
+    static void destroy();                   // Libera el objeto Audio
+    static auto get() -> Audio*;             // Obtiene el puntero al objeto Audio
+    ~Audio();                                // Destructor (públic per a std::unique_ptr)
+    Audio(const Audio&) = delete;            // Evitar copia
+    Audio(Audio&&) = delete;
+    auto operator=(const Audio&) -> Audio& = delete;  // Evitar asignación
+    auto operator=(Audio&&) -> Audio& = delete;
+
+    static void update();  // Actualización del sistema de audio
+
+    // --- Control de música ---
+    void playMusic(const std::string& name, int loop = -1, int crossfade_ms = 0);  // Reproducir música por nombre (con crossfade opcional)
+    void playMusic(Ja::Music* music, int loop = -1, int crossfade_ms = 0);         // Reproducir música por puntero (con crossfade opcional)
+    void pauseMusic();                                                             // Pausar reproducción de música
+    void resumeMusic();                                                            // Continua la música pausada
+    void stopMusic();                                                              // Detener completamente la música
+    void fadeOutMusic(int milliseconds) const;                                     // Fundido de salida de la música
+
+    // --- Control de sonidos ---
+    void playSound(const std::string& name, Group group = Group::GAME) const;  // Reproducir sonido puntual por nombre
+    void playSound(Ja::Sound* sound, Group group = Group::GAME) const;         // Reproducir sonido puntual por puntero
+    void stopAllSounds() const;                                                // Detener todos los sonidos
+
+    // --- Control de volumen (API interna: float 0.0..1.0) ---
+    void setSoundVolume(float volume, Group group = Group::ALL) const;  // Ajustar volumen de efectos
+    void setMusicVolume(float volume) const;                            // Ajustar volumen de música
+
+    // --- Helpers de conversió per a la capa de presentació ---
+    // UI (menús, notificacions) manega enters 0..100; internament viu float 0..1.
+    // No són constexpr perquè std::lround no ho és en C++20; s'usen en runtime.
+    static auto toPercent(float volume) -> int {
+        return static_cast<int>(std::lround(volume * 100.0F));
+    }
+    static auto fromPercent(int percent) -> float {
+        return static_cast<float>(percent) / 100.0F;
+    }
+
+    // --- Configuración general ---
+    void enable(bool value);                        // Establecer estado general
+    void toggleEnabled() { enabled_ = !enabled_; }  // Alternar estado general
+    void applySettings(const Config& config);       // Aplica una nova configuració
+
+    // --- Configuración de sonidos ---
+    void enableSound() { sound_enabled_ = true; }             // Habilitar sonidos
+    void disableSound() { sound_enabled_ = false; }           // Deshabilitar sonidos
+    void enableSound(bool value) { sound_enabled_ = value; }  // Establecer estado de sonidos
+    void toggleSound() { sound_enabled_ = !sound_enabled_; }  // Alternar estado de sonidos
+
+    // --- Configuración de música ---
+    void enableMusic() { music_enabled_ = true; }             // Habilitar música
+    void disableMusic() { music_enabled_ = false; }           // Deshabilitar música
+    void enableMusic(bool value) { music_enabled_ = value; }  // Establecer estado de música
+    void toggleMusic() { music_enabled_ = !music_enabled_; }  // Alternar estado de música
+
+    // --- Consultas de estado ---
+    [[nodiscard]] auto isEnabled() const -> bool { return enabled_; }
+    [[nodiscard]] auto isSoundEnabled() const -> bool { return sound_enabled_; }
+    [[nodiscard]] auto isMusicEnabled() const -> bool { return music_enabled_; }
+    [[nodiscard]] auto getMusicState() const -> MusicState { return music_.state; }
+    [[nodiscard]] static auto getRealMusicState() -> MusicState;
+    [[nodiscard]] auto getCurrentMusicName() const -> const std::string& { return music_.name; }
+
+   private:
+    // --- Tipos anidados ---
+    struct Music {
+        MusicState state{MusicState::STOPPED};  // Estado actual de la música
+        std::string name;                       // Última pista de música reproducida
+        bool loop{false};                       // Indica si se reproduce en bucle
+    };
+
+    // --- Métodos ---
+    explicit Audio(const Config& config);  // Constructor privat: rep la config
+    void initSDLAudio();                   // Inicializa SDL Audio
+
+    // --- Variables miembro ---
+    static std::unique_ptr<Audio> instance;  // Instància única d'Audio
+
+    Config config_{};           // Configuració injectada (volums, enables)
+    Music music_;               // Estado de la música
+    bool enabled_{true};        // Estado general del audio
+    bool sound_enabled_{true};  // Estado de los efectos de sonido
+    bool music_enabled_{true};  // Estado de la música
+};

source/core/audio/audio_adapter.cpp

@@ -0,0 +1,15 @@
+#include "core/audio/audio_adapter.hpp"
+
+#include "core/resources/resource_cache.hpp"
+
+namespace AudioResource {
+
+    auto getMusic(const std::string& name) -> Ja::Music* {
+        return Resource::Cache::get().getMusic(name);
+    }
+
+    auto getSound(const std::string& name) -> Ja::Sound* {
+        return Resource::Cache::get().getSound(name);
+    }
+
+}  // namespace AudioResource

source/core/audio/audio_adapter.hpp

@@ -0,0 +1,19 @@
+#pragma once
+
+// --- Audio Resource Adapter ---
+// Aquest fitxer exposa una interfície comuna a Audio per obtenir Ja::Music* /
+// Ja::Sound* per nom. Cada projecte la implementa en audio_adapter.cpp delegant
+// al seu singleton de recursos (Resource::Cache::get(), ...). Així audio.hpp
+// i audio.cpp es poden compartir entre projectes.
+
+#include <string>  // Para string
+
+namespace Ja {
+    struct Music;
+    struct Sound;
+}  // namespace Ja
+
+namespace AudioResource {
+    auto getMusic(const std::string& name) -> Ja::Music*;
+    auto getSound(const std::string& name) -> Ja::Sound*;
+}  // namespace AudioResource

source/core/audio/jail_audio.hpp

@@ -0,0 +1,677 @@
+#pragma once
+
+// --- Includes ---
+#include <SDL3/SDL.h>
+
+#include <algorithm>
+#include <cstdint>
+#include <iostream>
+#include <iterator>
+#include <memory>
+#include <string>
+#include <vector>
+
+// clang-format off
+#define STB_VORBIS_HEADER_ONLY
+// NOLINTNEXTLINE(bugprone-suspicious-include)
+#include "external/stb_vorbis.c"  // Para stb_vorbis_open_memory i streaming
+// clang-format on
+
+// Deleter stateless per a buffers reservats amb `SDL_malloc` / `SDL_LoadWAV*`.
+// Compatible amb `std::unique_ptr<Uint8[], SdlFreeDeleter>` — zero size overhead
+// gràcies a EBO, igual que un unique_ptr amb default_delete.
+struct SdlFreeDeleter {
+    void operator()(Uint8* p) const noexcept {
+        if (p != nullptr) { SDL_free(p); }
+    }
+};
+
+// Engine de baix nivell d'àudio del projecte jailgames: streaming OGG (stb_vorbis)
+// + N canals d'efectes (SDL3 audio). No depèn d'Options ni de cap singleton del
+// joc; només de SDL3 i stb_vorbis. La capa superior (Audio) li passa recursos
+// pel punter i fa el bookkeeping d'usuari.
+namespace Ja {
+
+    // --- Public Enums ---
+    enum class ChannelState : std::uint8_t {
+        INVALID,
+        FREE,
+        PLAYING,
+        PAUSED,
+        SOUND_DISABLED,
+    };
+
+    enum class MusicState : std::uint8_t {
+        INVALID,
+        PLAYING,
+        PAUSED,
+        STOPPED,
+        DISABLED,
+    };
+
+    // --- Struct Definitions ---
+    inline constexpr int MAX_SIMULTANEOUS_CHANNELS = 20;
+    inline constexpr int MAX_GROUPS = 2;
+
+    struct Sound {
+        SDL_AudioSpec spec{SDL_AUDIO_S16, 2, 48000};
+        Uint32 length{0};
+        // Buffer descomprimit (PCM) propietat del sound. Reservat per SDL_LoadWAV
+        // via SDL_malloc; el deleter `SdlFreeDeleter` allibera amb SDL_free.
+        std::unique_ptr<Uint8[], SdlFreeDeleter> buffer;
+    };
+
+    // L'ordre (punters primer, ints després, enum de 8 bits al final) minimitza
+    // el padding a 64-bit (evita avisos de clang-analyzer-optin.performance.Padding).
+    struct Channel {
+        Sound* sound{nullptr};
+        SDL_AudioStream* stream{nullptr};
+        int pos{0};
+        int times{0};
+        int group{0};
+        ChannelState state{ChannelState::FREE};
+    };
+
+    struct Music {
+        SDL_AudioSpec spec{SDL_AUDIO_S16, 2, 48000};
+
+        // OGG comprimit en memòria. Propietat nostra; es copia des del buffer
+        // d'entrada una sola vegada en loadMusic i es descomprimix en chunks
+        // per streaming. Com que stb_vorbis guarda un punter persistent al
+        // `.data()` d'aquest vector, no el podem resize'jar un cop establert
+        // (una reallocation invalidaria el punter que el decoder conserva).
+        std::vector<Uint8> ogg_data;
+        stb_vorbis* vorbis{nullptr};  // handle del decoder, viu tot el cicle del Music
+
+        std::string filename;
+
+        int times{0};  // loops restants (-1 = infinit, 0 = un sol play)
+        SDL_AudioStream* stream{nullptr};
+        MusicState state{MusicState::INVALID};
+    };
+
+    // --- Crossfade / Fade State ---
+    struct FadeState {
+        bool active{false};
+        Uint64 start_time{0};
+        int duration_ms{0};
+        float initial_volume{0.0F};
+    };
+
+    struct OutgoingMusic {
+        SDL_AudioStream* stream{nullptr};
+        FadeState fade;
+    };
+
+    // --- Internal Global State (inline, C++17) ---
+    inline Music* current_music{nullptr};
+    inline Channel channels[MAX_SIMULTANEOUS_CHANNELS];
+
+    inline SDL_AudioSpec audio_spec{SDL_AUDIO_S16, 2, 48000};
+    inline float music_volume{1.0F};
+    inline float sound_volume[MAX_GROUPS];
+    inline bool music_enabled{true};
+    inline bool sound_enabled{true};
+    inline SDL_AudioDeviceID sdl_audio_device{0};
+
+    inline OutgoingMusic outgoing_music;
+    inline FadeState incoming_fade;
+
+    // --- Forward Declarations ---
+    inline void stopMusic();
+    inline void stopChannel(int channel);
+    inline auto playSoundOnChannel(Sound* sound, int channel, int loop = 0, int group = 0) -> int;
+    inline void crossfadeMusic(Music* music, int crossfade_ms, int loop = -1);
+
+    // --- Music streaming internals ---
+    // Bytes-per-sample per canal (sempre s16)
+    inline constexpr int MUSIC_BYTES_PER_SAMPLE = 2;
+    // Quants shorts decodifiquem per crida a get_samples_short_interleaved.
+    // 8192 shorts = 4096 samples/channel en estèreo ≈ 85ms de so a 48kHz.
+    inline constexpr int MUSIC_CHUNK_SHORTS = 8192;
+    // Umbral d'audio per davant del cursor de reproducció. Mantenim ≥ 0.5 s a
+    // l'SDL_AudioStream per absorbir jitter de frame i evitar underruns.
+    inline constexpr float MUSIC_LOW_WATER_SECONDS = 0.5F;
+
+    // Decodifica un chunk del vorbis i el volca a l'stream. Retorna samples
+    // decodificats per canal (0 = EOF de l'stream vorbis).
+    inline auto feedMusicChunk(Music* music) -> int {
+        if (music == nullptr || music->vorbis == nullptr || music->stream == nullptr) { return 0; }
+
+        short chunk[MUSIC_CHUNK_SHORTS];
+        const int NUM_CHANNELS = music->spec.channels;
+        const int SAMPLES_PER_CHANNEL = stb_vorbis_get_samples_short_interleaved(
+            music->vorbis,
+            NUM_CHANNELS,
+            static_cast<short*>(chunk),
+            MUSIC_CHUNK_SHORTS);
+        if (SAMPLES_PER_CHANNEL <= 0) { return 0; }
+
+        const int BYTES = SAMPLES_PER_CHANNEL * NUM_CHANNELS * MUSIC_BYTES_PER_SAMPLE;
+        SDL_PutAudioStreamData(music->stream, static_cast<const void*>(chunk), BYTES);
+        return SAMPLES_PER_CHANNEL;
+    }
+
+    // Reompli l'stream fins que tinga ≥ MUSIC_LOW_WATER_SECONDS bufferats.
+    // En arribar a EOF del vorbis, aplica el loop (times) o deixa drenar.
+    inline void pumpMusic(Music* music) {
+        if (music == nullptr || music->vorbis == nullptr || music->stream == nullptr) { return; }
+
+        const int BYTES_PER_SECOND = music->spec.freq * music->spec.channels * MUSIC_BYTES_PER_SAMPLE;
+        const int LOW_WATER_BYTES = static_cast<int>(MUSIC_LOW_WATER_SECONDS * static_cast<float>(BYTES_PER_SECOND));
+
+        while (SDL_GetAudioStreamAvailable(music->stream) < LOW_WATER_BYTES) {
+            const int DECODED = feedMusicChunk(music);
+            if (DECODED > 0) { continue; }
+
+            // EOF: si queden loops, rebobinar; si no, tallar i deixar drenar.
+            if (music->times != 0) {
+                stb_vorbis_seek_start(music->vorbis);
+                if (music->times > 0) { music->times--; }
+            } else {
+                break;
+            }
+        }
+    }
+
+    // Pre-carrega `duration_ms` de so dins l'stream actual abans que l'stream
+    // siga robat per outgoing_music (crossfade o fade-out). Imprescindible amb
+    // streaming: l'stream robat no es pot re-alimentar perquè perd la referència
+    // al seu vorbis decoder. No aplica loop — si el vorbis s'esgota abans, parem.
+    inline void preFillOutgoing(Music* music, int duration_ms) {
+        if (music == nullptr || music->vorbis == nullptr || music->stream == nullptr) { return; }
+
+        const int BYTES_PER_SECOND = music->spec.freq * music->spec.channels * MUSIC_BYTES_PER_SAMPLE;
+        const int NEEDED_BYTES = static_cast<int>((static_cast<std::int64_t>(duration_ms) * BYTES_PER_SECOND) / 1000);
+
+        while (SDL_GetAudioStreamAvailable(music->stream) < NEEDED_BYTES) {
+            const int DECODED = feedMusicChunk(music);
+            if (DECODED <= 0) { break; }  // EOF: deixem drenar el que hi haja
+        }
+    }
+
+    // --- Core Functions ---
+
+    // Avança el fade-out de l'outgoing music (crossfade o fade-out a silenci).
+    inline void updateOutgoingFade() {
+        if (outgoing_music.stream == nullptr || !outgoing_music.fade.active) { return; }
+
+        const Uint64 ELAPSED = SDL_GetTicks() - outgoing_music.fade.start_time;
+        if (ELAPSED >= static_cast<Uint64>(outgoing_music.fade.duration_ms)) {
+            SDL_DestroyAudioStream(outgoing_music.stream);
+            outgoing_music.stream = nullptr;
+            outgoing_music.fade.active = false;
+        } else {
+            const float PERCENT = static_cast<float>(ELAPSED) / static_cast<float>(outgoing_music.fade.duration_ms);
+            SDL_SetAudioStreamGain(outgoing_music.stream, outgoing_music.fade.initial_volume * (1.0F - PERCENT));
+        }
+    }
+
+    // Avança el fade-in de la pista actual (si hi ha un crossfade en curs).
+    inline void updateIncomingFade() {
+        if (!incoming_fade.active) { return; }
+
+        const Uint64 ELAPSED = SDL_GetTicks() - incoming_fade.start_time;
+        if (ELAPSED >= static_cast<Uint64>(incoming_fade.duration_ms)) {
+            incoming_fade.active = false;
+            SDL_SetAudioStreamGain(current_music->stream, music_volume);
+        } else {
+            const float PERCENT = static_cast<float>(ELAPSED) / static_cast<float>(incoming_fade.duration_ms);
+            SDL_SetAudioStreamGain(current_music->stream, music_volume * PERCENT);
+        }
+    }
+
+    // Alimenta la pista actual i la para si s'ha esgotat el stream vorbis.
+    inline void updateCurrentMusic() {
+        if (!music_enabled || current_music == nullptr || current_music->state != MusicState::PLAYING) { return; }
+
+        updateIncomingFade();
+
+        pumpMusic(current_music);
+        if (current_music->times == 0 && SDL_GetAudioStreamAvailable(current_music->stream) == 0) {
+            stopMusic();
+        }
+    }
+
+    // Reompli (si cal loop) o para els canals d'efectes actius.
+    inline void updateSoundChannels() {
+        if (!sound_enabled) { return; }
+
+        for (int i = 0; i < MAX_SIMULTANEOUS_CHANNELS; ++i) {
+            if (channels[i].state != ChannelState::PLAYING) { continue; }
+
+            if (channels[i].times != 0) {
+                if (static_cast<Uint32>(SDL_GetAudioStreamAvailable(channels[i].stream)) < (channels[i].sound->length / 2)) {
+                    SDL_PutAudioStreamData(channels[i].stream, channels[i].sound->buffer.get(), channels[i].sound->length);
+                    if (channels[i].times > 0) { channels[i].times--; }
+                }
+            } else if (SDL_GetAudioStreamAvailable(channels[i].stream) == 0) {
+                stopChannel(i);
+            }
+        }
+    }
+
+    inline void update() {
+        updateOutgoingFade();
+        updateCurrentMusic();
+        updateSoundChannels();
+    }
+
+    inline void init(const int freq, const SDL_AudioFormat format, const int num_channels) {
+        audio_spec = {.format = format, .channels = num_channels, .freq = freq};
+        if (sdl_audio_device != 0) { SDL_CloseAudioDevice(sdl_audio_device); }
+        sdl_audio_device = SDL_OpenAudioDevice(SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK, &audio_spec);
+        if (sdl_audio_device == 0) { std::cout << "Failed to initialize SDL audio!" << '\n'; }
+        for (auto& channel : channels) { channel.state = ChannelState::FREE; }
+        std::ranges::fill(sound_volume, 0.5F);
+    }
+
+    inline void quit() {
+        if (outgoing_music.stream != nullptr) {
+            SDL_DestroyAudioStream(outgoing_music.stream);
+            outgoing_music.stream = nullptr;
+        }
+        if (sdl_audio_device != 0) { SDL_CloseAudioDevice(sdl_audio_device); }
+        sdl_audio_device = 0;
+    }
+
+    // --- Music Functions ---
+
+    inline auto loadMusic(const Uint8* buffer, Uint32 length) -> Music* {
+        if (buffer == nullptr || length == 0) { return nullptr; }
+
+        // Allocem el Music primer per aprofitar el seu `std::vector<Uint8>`
+        // com a propietari del OGG comprimit. stb_vorbis guarda un punter
+        // persistent al buffer; com que ací no el resize'jem, el .data() és
+        // estable durant tot el cicle de vida del music.
+        auto music = std::make_unique<Music>();
+        music->ogg_data.assign(buffer, buffer + length);
+
+        int vorbis_error = 0;
+        music->vorbis = stb_vorbis_open_memory(music->ogg_data.data(),
+            static_cast<int>(length),
+            &vorbis_error,
+            nullptr);
+        if (music->vorbis == nullptr) {
+            std::cout << "loadMusic: stb_vorbis_open_memory failed (error " << vorbis_error << ")" << '\n';
+            return nullptr;
+        }
+
+        const stb_vorbis_info INFO = stb_vorbis_get_info(music->vorbis);
+        music->spec.channels = static_cast<int>(INFO.channels);
+        music->spec.freq = static_cast<int>(INFO.sample_rate);
+        music->spec.format = SDL_AUDIO_S16;
+        music->state = MusicState::STOPPED;
+
+        return music.release();
+    }
+
+    // Overload amb filename — els callers l'usen per poder comparar la música
+    // en curs amb getMusicFilename() i no rearrancar-la si ja és la mateixa.
+    inline auto loadMusic(const Uint8* buffer, Uint32 length, const char* filename) -> Music* {
+        Music* music = loadMusic(buffer, length);
+        if (music != nullptr && filename != nullptr) { music->filename = filename; }
+        return music;
+    }
+
+    inline void playMusic(Music* music, const int loop = -1) {
+        if (!music_enabled || music == nullptr || music->vorbis == nullptr) { return; }
+
+        stopMusic();
+
+        current_music = music;
+        current_music->state = MusicState::PLAYING;
+        current_music->times = loop;
+
+        // Rebobinem l'stream de vorbis al principi. Cobreix tant play-per-primera-
+        // vegada com replays/canvis de track que tornen a la mateixa pista.
+        stb_vorbis_seek_start(current_music->vorbis);
+
+        current_music->stream = SDL_CreateAudioStream(&current_music->spec, &audio_spec);
+        if (current_music->stream == nullptr) {
+            std::cout << "Failed to create audio stream!" << '\n';
+            current_music->state = MusicState::STOPPED;
+            return;
+        }
+        SDL_SetAudioStreamGain(current_music->stream, music_volume);
+
+        // Pre-cargem el buffer abans de bindejar per evitar un underrun inicial.
+        pumpMusic(current_music);
+
+        if (!SDL_BindAudioStream(sdl_audio_device, current_music->stream)) {
+            std::cout << "[ERROR] SDL_BindAudioStream failed!" << '\n';
+        }
+    }
+
+    inline auto getMusicFilename(const Music* music = nullptr) -> const char* {
+        if (music == nullptr) { music = current_music; }
+        if (music == nullptr || music->filename.empty()) { return nullptr; }
+        return music->filename.c_str();
+    }
+
+    inline void pauseMusic() {
+        if (!music_enabled) { return; }
+        if (current_music == nullptr || current_music->state != MusicState::PLAYING) { return; }
+
+        current_music->state = MusicState::PAUSED;
+        SDL_UnbindAudioStream(current_music->stream);
+    }
+
+    inline void resumeMusic() {
+        if (!music_enabled) { return; }
+        if (current_music == nullptr || current_music->state != MusicState::PAUSED) { return; }
+
+        current_music->state = MusicState::PLAYING;
+        SDL_BindAudioStream(sdl_audio_device, current_music->stream);
+    }
+
+    inline void stopMusic() {
+        // Limpiar outgoing crossfade si existe
+        if (outgoing_music.stream != nullptr) {
+            SDL_DestroyAudioStream(outgoing_music.stream);
+            outgoing_music.stream = nullptr;
+            outgoing_music.fade.active = false;
+        }
+        incoming_fade.active = false;
+
+        if (current_music == nullptr || current_music->state == MusicState::INVALID || current_music->state == MusicState::STOPPED) { return; }
+
+        current_music->state = MusicState::STOPPED;
+        if (current_music->stream != nullptr) {
+            SDL_DestroyAudioStream(current_music->stream);
+            current_music->stream = nullptr;
+        }
+        // Deixem el handle de vorbis viu — es tanca en deleteMusic.
+        // Rebobinem perquè un futur playMusic comence des del principi.
+        if (current_music->vorbis != nullptr) {
+            stb_vorbis_seek_start(current_music->vorbis);
+        }
+    }
+
+    inline void fadeOutMusic(const int milliseconds) {
+        if (!music_enabled) { return; }
+        if (current_music == nullptr || current_music->state != MusicState::PLAYING) { return; }
+
+        // Destruir outgoing anterior si existe
+        if (outgoing_music.stream != nullptr) {
+            SDL_DestroyAudioStream(outgoing_music.stream);
+            outgoing_music.stream = nullptr;
+        }
+
+        // Pre-omplim l'stream amb `milliseconds` de so: un cop robat, ja no
+        // tindrà accés al vorbis decoder i només podrà drenar el que tinga.
+        preFillOutgoing(current_music, milliseconds);
+
+        // Robar el stream del current_music al outgoing
+        outgoing_music.stream = current_music->stream;
+        outgoing_music.fade = {
+            .active = true,
+            .start_time = SDL_GetTicks(),
+            .duration_ms = milliseconds,
+            .initial_volume = music_volume,
+        };
+
+        // Dejar current_music sin stream (ya lo tiene outgoing)
+        current_music->stream = nullptr;
+        current_music->state = MusicState::STOPPED;
+        if (current_music->vorbis != nullptr) { stb_vorbis_seek_start(current_music->vorbis); }
+        incoming_fade.active = false;
+    }
+
+    inline void crossfadeMusic(Music* music, const int crossfade_ms, const int loop) {
+        if (!music_enabled || music == nullptr || music->vorbis == nullptr) { return; }
+
+        // Destruir outgoing anterior si existe (crossfade durante crossfade)
+        if (outgoing_music.stream != nullptr) {
+            SDL_DestroyAudioStream(outgoing_music.stream);
+            outgoing_music.stream = nullptr;
+            outgoing_music.fade.active = false;
+        }
+
+        // Robar el stream de la musica actual al outgoing para el fade-out.
+        // Pre-omplim amb `crossfade_ms` de so perquè no es quede en silenci
+        // abans d'acabar el fade (l'stream robat ja no pot alimentar-se).
+        if (current_music != nullptr && current_music->state == MusicState::PLAYING && current_music->stream != nullptr) {
+            preFillOutgoing(current_music, crossfade_ms);
+            outgoing_music.stream = current_music->stream;
+            outgoing_music.fade = {
+                .active = true,
+                .start_time = SDL_GetTicks(),
+                .duration_ms = crossfade_ms,
+                .initial_volume = music_volume,
+            };
+            current_music->stream = nullptr;
+            current_music->state = MusicState::STOPPED;
+            if (current_music->vorbis != nullptr) { stb_vorbis_seek_start(current_music->vorbis); }
+        }
+
+        // Iniciar la nueva pista con gain=0 (el fade-in la sube gradualmente)
+        current_music = music;
+        current_music->state = MusicState::PLAYING;
+        current_music->times = loop;
+
+        stb_vorbis_seek_start(current_music->vorbis);
+        current_music->stream = SDL_CreateAudioStream(&current_music->spec, &audio_spec);
+        if (current_music->stream == nullptr) {
+            std::cout << "Failed to create audio stream for crossfade!" << '\n';
+            current_music->state = MusicState::STOPPED;
+            return;
+        }
+        SDL_SetAudioStreamGain(current_music->stream, 0.0F);
+        pumpMusic(current_music);  // pre-carrega abans de bindejar
+        SDL_BindAudioStream(sdl_audio_device, current_music->stream);
+
+        // Configurar fade-in
+        incoming_fade = {
+            .active = true,
+            .start_time = SDL_GetTicks(),
+            .duration_ms = crossfade_ms,
+            .initial_volume = 0.0F,
+        };
+    }
+
+    inline auto getMusicState() -> MusicState {
+        if (!music_enabled) { return MusicState::DISABLED; }
+        if (current_music == nullptr) { return MusicState::INVALID; }
+
+        return current_music->state;
+    }
+
+    inline void deleteMusic(Music* music) {
+        if (music == nullptr) { return; }
+        if (current_music == music) {
+            stopMusic();
+            current_music = nullptr;
+        }
+        if (music->stream != nullptr) { SDL_DestroyAudioStream(music->stream); }
+        if (music->vorbis != nullptr) { stb_vorbis_close(music->vorbis); }
+        // ogg_data (std::vector) i filename (std::string) s'alliberen sols
+        // al destructor de Music.
+        delete music;
+    }
+
+    inline auto setMusicVolume(float volume) -> float {
+        music_volume = SDL_clamp(volume, 0.0F, 1.0F);
+        if (current_music != nullptr && current_music->stream != nullptr) {
+            SDL_SetAudioStreamGain(current_music->stream, music_volume);
+        }
+        return music_volume;
+    }
+
+    inline void setMusicPosition(float /*value*/) {
+        // No implementat amb el backend de streaming.
+    }
+
+    inline auto getMusicPosition() -> float {
+        return 0.0F;
+    }
+
+    inline void enableMusic(const bool value) {
+        if (!value && current_music != nullptr && (current_music->state == MusicState::PLAYING)) { stopMusic(); }
+        music_enabled = value;
+    }
+
+    // --- Sound Functions ---
+
+    inline auto loadSound(std::uint8_t* buffer, std::uint32_t size) -> Sound* {
+        auto sound = std::make_unique<Sound>();
+        Uint8* raw = nullptr;
+        if (!SDL_LoadWAV_IO(SDL_IOFromMem(buffer, size), true, &sound->spec, &raw, &sound->length)) {
+            std::cout << "Failed to load WAV from memory: " << SDL_GetError() << '\n';
+            return nullptr;
+        }
+        sound->buffer.reset(raw);  // adopta el SDL_malloc'd buffer
+        return sound.release();
+    }
+
+    inline auto playSound(Sound* sound, const int loop = 0, const int group = 0) -> int {
+        if (!sound_enabled || sound == nullptr) { return -1; }
+
+        int channel = 0;
+        while (channel < MAX_SIMULTANEOUS_CHANNELS && channels[channel].state != ChannelState::FREE) { channel++; }
+        if (channel == MAX_SIMULTANEOUS_CHANNELS) {
+            // No hay canal libre, reemplazamos el primero
+            channel = 0;
+        }
+
+        return playSoundOnChannel(sound, channel, loop, group);
+    }
+
+    inline auto playSoundOnChannel(Sound* sound, const int channel, const int loop, const int group) -> int {
+        if (!sound_enabled || sound == nullptr) { return -1; }
+        if (channel < 0 || channel >= MAX_SIMULTANEOUS_CHANNELS) { return -1; }
+
+        stopChannel(channel);
+
+        channels[channel].sound = sound;
+        channels[channel].times = loop;
+        channels[channel].pos = 0;
+        channels[channel].group = group;
+        channels[channel].state = ChannelState::PLAYING;
+        channels[channel].stream = SDL_CreateAudioStream(&channels[channel].sound->spec, &audio_spec);
+
+        if (channels[channel].stream == nullptr) {
+            std::cout << "Failed to create audio stream for sound!" << '\n';
+            channels[channel].state = ChannelState::FREE;
+            return -1;
+        }
+
+        SDL_PutAudioStreamData(channels[channel].stream, channels[channel].sound->buffer.get(), channels[channel].sound->length);
+        SDL_SetAudioStreamGain(channels[channel].stream, sound_volume[group]);
+        SDL_BindAudioStream(sdl_audio_device, channels[channel].stream);
+
+        return channel;
+    }
+
+    inline void deleteSound(Sound* sound) {
+        if (sound == nullptr) { return; }
+        for (int i = 0; i < MAX_SIMULTANEOUS_CHANNELS; i++) {
+            if (channels[i].sound == sound) { stopChannel(i); }
+        }
+        // buffer es destrueix automàticament via RAII (SdlFreeDeleter).
+        delete sound;
+    }
+
+    inline void pauseChannel(const int channel) {
+        if (!sound_enabled) { return; }
+
+        if (channel == -1) {
+            for (auto& ch : channels) {
+                if (ch.state == ChannelState::PLAYING) {
+                    ch.state = ChannelState::PAUSED;
+                    SDL_UnbindAudioStream(ch.stream);
+                }
+            }
+        } else if (channel >= 0 && channel < MAX_SIMULTANEOUS_CHANNELS) {
+            if (channels[channel].state == ChannelState::PLAYING) {
+                channels[channel].state = ChannelState::PAUSED;
+                SDL_UnbindAudioStream(channels[channel].stream);
+            }
+        }
+    }
+
+    inline void resumeChannel(const int channel) {
+        if (!sound_enabled) { return; }
+
+        if (channel == -1) {
+            for (auto& ch : channels) {
+                if (ch.state == ChannelState::PAUSED) {
+                    ch.state = ChannelState::PLAYING;
+                    SDL_BindAudioStream(sdl_audio_device, ch.stream);
+                }
+            }
+        } else if (channel >= 0 && channel < MAX_SIMULTANEOUS_CHANNELS) {
+            if (channels[channel].state == ChannelState::PAUSED) {
+                channels[channel].state = ChannelState::PLAYING;
+                SDL_BindAudioStream(sdl_audio_device, channels[channel].stream);
+            }
+        }
+    }
+
+    inline void stopChannel(const int channel) {
+        if (channel == -1) {
+            for (auto& ch : channels) {
+                if (ch.state != ChannelState::FREE) {
+                    if (ch.stream != nullptr) { SDL_DestroyAudioStream(ch.stream); }
+                    ch.stream = nullptr;
+                    ch.state = ChannelState::FREE;
+                    ch.pos = 0;
+                    ch.sound = nullptr;
+                }
+            }
+        } else if (channel >= 0 && channel < MAX_SIMULTANEOUS_CHANNELS) {
+            if (channels[channel].state != ChannelState::FREE) {
+                if (channels[channel].stream != nullptr) { SDL_DestroyAudioStream(channels[channel].stream); }
+                channels[channel].stream = nullptr;
+                channels[channel].state = ChannelState::FREE;
+                channels[channel].pos = 0;
+                channels[channel].sound = nullptr;
+            }
+        }
+    }
+
+    inline auto getChannelState(const int channel) -> ChannelState {
+        if (!sound_enabled) { return ChannelState::SOUND_DISABLED; }
+        if (channel < 0 || channel >= MAX_SIMULTANEOUS_CHANNELS) { return ChannelState::INVALID; }
+
+        return channels[channel].state;
+    }
+
+    inline auto setSoundVolume(float volume, const int group = -1) -> float {
+        const float V = SDL_clamp(volume, 0.0F, 1.0F);
+
+        if (group == -1) {
+            std::ranges::fill(sound_volume, V);
+        } else if (group >= 0 && group < MAX_GROUPS) {
+            sound_volume[group] = V;
+        } else {
+            return V;
+        }
+
+        // Aplicar volum als canals actius.
+        for (auto& ch : channels) {
+            if ((ch.state == ChannelState::PLAYING) || (ch.state == ChannelState::PAUSED)) {
+                if (group == -1 || ch.group == group) {
+                    if (ch.stream != nullptr) {
+                        SDL_SetAudioStreamGain(ch.stream, sound_volume[ch.group]);
+                    }
+                }
+            }
+        }
+        return V;
+    }
+
+    inline void enableSound(const bool value) {
+        if (!value) {
+            stopChannel(-1);
+        }
+        sound_enabled = value;
+    }
+
+    inline auto setVolume(float volume) -> float {
+        const float V = setMusicVolume(volume);
+        setSoundVolume(V, -1);
+        return V;
+    }
+
+}  // namespace Ja

source/core/resources/resource_cache.cpp

@@ -4,10 +4,21 @@
 #include <iostream>
 #include <stdexcept>
 
+#include "core/audio/jail_audio.hpp"
 #include "core/resources/palette_loader.hpp"
 #include "core/resources/resource_helper.hpp"
 #include "utils/utils.hpp"
 
+// Deleters dels recursos d'àudio: necessiten veure el tipus complet de
+// Ja::Music / Ja::Sound (definits a jail_audio.hpp), per això van ací.
+void MusicDeleter::operator()(Ja::Music* music) const noexcept {
+    if (music != nullptr) { Ja::deleteMusic(music); }
+}
+
+void SoundDeleter::operator()(Ja::Sound* sound) const noexcept {
+    if (sound != nullptr) { Ja::deleteSound(sound); }
+}
+
 namespace Resource {
 
     auto Cache::get() -> Cache& {
@@ -62,4 +73,53 @@ namespace Resource {
         return it->palette;
     }
 
+    void Cache::loadMusic(const std::string& name, const std::string& file_path) {
+        auto bytes = Helper::loadFile(file_path);
+        if (bytes.empty()) {
+            throw std::runtime_error("Cache: cannot load music " + file_path);
+        }
+        Ja::Music* raw = Ja::loadMusic(bytes.data(), static_cast<Uint32>(bytes.size()), file_path.c_str());
+        if (raw == nullptr) {
+            throw std::runtime_error("Cache: Ja::loadMusic failed for " + file_path);
+        }
+        musics_.emplace_back(MusicResource{.name = name, .music = std::unique_ptr<Ja::Music, MusicDeleter>(raw)});
+        printWithDots("Music : ", getFileName(file_path), "[ LOADED ]");
+    }
+
+    void Cache::loadSound(const std::string& name, const std::string& file_path) {
+        auto bytes = Helper::loadFile(file_path);
+        if (bytes.empty()) {
+            throw std::runtime_error("Cache: cannot load sound " + file_path);
+        }
+        Ja::Sound* raw = Ja::loadSound(bytes.data(), static_cast<std::uint32_t>(bytes.size()));
+        if (raw == nullptr) {
+            throw std::runtime_error("Cache: Ja::loadSound failed for " + file_path);
+        }
+        sounds_.emplace_back(SoundResource{.name = name, .sound = std::unique_ptr<Ja::Sound, SoundDeleter>(raw)});
+        printWithDots("Sound : ", getFileName(file_path), "[ LOADED ]");
+    }
+
+    auto Cache::getMusic(const std::string& name) -> Ja::Music* {
+        auto it = std::ranges::find_if(musics_, [&name](const auto& m) { return m.name == name; });
+        if (it == musics_.end()) {
+            std::cerr << "Cache: music not found: " << name << '\n';
+            throw std::runtime_error("Music not found: " + name);
+        }
+        return it->music.get();
+    }
+
+    auto Cache::getSound(const std::string& name) -> Ja::Sound* {
+        auto it = std::ranges::find_if(sounds_, [&name](const auto& s) { return s.name == name; });
+        if (it == sounds_.end()) {
+            std::cerr << "Cache: sound not found: " << name << '\n';
+            throw std::runtime_error("Sound not found: " + name);
+        }
+        return it->sound.get();
+    }
+
+    void Cache::clearAudio() {
+        musics_.clear();
+        sounds_.clear();
+    }
+
 }  // namespace Resource

source/core/resources/resource_cache.hpp

@@ -28,10 +28,24 @@ namespace Resource {
         // Carrega una paleta (.pal JASC o .gif) i la registra amb el nom donat.
         // Pensat per a paletes compartides (UI, fonts, tilesets reciclats).
         void loadPalette(const std::string& name, const std::string& file_path);
+        // Carrega una pista OGG de música (streaming) i la registra amb el nom donat.
+        void loadMusic(const std::string& name, const std::string& file_path);
+        // Carrega un so WAV (descomprimit a memòria) i el registra amb el nom donat.
+        void loadSound(const std::string& name, const std::string& file_path);
 
         auto getSurface(const std::string& name) -> std::shared_ptr<Surface>;
         auto getAnimationData(const std::string& name) -> const AnimationResource&;
         auto getPalette(const std::string& name) -> const Palette&;
+        // Retornen el punter cru; l'ownership queda al Cache.
+        auto getMusic(const std::string& name) -> Ja::Music*;
+        auto getSound(const std::string& name) -> Ja::Sound*;
+
+        // Allibera explícitament música i sons. Cal cridar-la des de ~Director
+        // ABANS de destruir Audio i de SDL_Quit(): com que el Cache és Meyers
+        // i es destrueix a la sortida del programa, si esperem els seus
+        // destructors els streams de SDL ja estarien invalidats i la deletion
+        // de Ja::Music crashejaria.
+        void clearAudio();
 
        private:
         Cache() = default;
@@ -40,6 +54,8 @@ namespace Resource {
         std::vector<SurfaceResource> surfaces_;
         std::vector<AnimationResource> animations_;
         std::vector<PaletteResource> palettes_;
+        std::vector<MusicResource> musics_;
+        std::vector<SoundResource> sounds_;
     };
 
 }  // namespace Resource

source/core/resources/resource_types.hpp

@@ -7,6 +7,12 @@
 
 #include "core/rendering/surface.hpp"
 
+// Forward-declares per no incloure core/audio/jail_audio.hpp al header.
+namespace Ja {
+    struct Music;
+    struct Sound;
+}  // namespace Ja
+
 struct SurfaceResource {
     std::string name;
     std::shared_ptr<Surface> surface;
@@ -21,3 +27,22 @@ struct PaletteResource {
     std::string name;
     Palette palette;
 };
+
+// Deleters amb implementació al .cpp (fan delete de tipus incomplets ací).
+struct MusicDeleter {
+    void operator()(Ja::Music* music) const noexcept;
+};
+
+struct SoundDeleter {
+    void operator()(Ja::Sound* sound) const noexcept;
+};
+
+struct MusicResource {
+    std::string name;
+    std::unique_ptr<Ja::Music, MusicDeleter> music;
+};
+
+struct SoundResource {
+    std::string name;
+    std::unique_ptr<Ja::Sound, SoundDeleter> sound;
+};

source/core/system/director.cpp

@@ -10,6 +10,7 @@
 #include <memory>
 #include <utility>
 
+#include "core/audio/audio.hpp"
 #include "core/input/key_config.hpp"
 #include "core/locale/locale.hpp"
 #include "core/rendering/notifier.hpp"
@@ -69,6 +70,15 @@ Director::Director() {
     Resource::Cache::get().loadSurface("8bithud.gif", "data/font/8bithud.gif");
     Resource::Cache::get().getSurface("8bithud.gif")->setPalette(Resource::Cache::get().getPalette("ui"));
 
+    // Música de la piràmide 1 (primer i únic track de moment). Carreguem ací
+    // perquè forma part del preload d'assets, com la font i la paleta.
+    Resource::Cache::get().loadMusic("pyramid_1.ogg", "data/music/pyramid_1.ogg");
+
+    // Audio: singleton manual propietari d'un SDL audio device. Es destrueix
+    // explícitament a ~Director abans que Resource::Cache (Meyers) buide els
+    // JA_Music_t que continga, així que no queden streams orfes.
+    Audio::init(Options::buildAudioConfig());
+
     RenderInfo::get().init();
     Notifier::get().init();
 
@@ -77,11 +87,16 @@ Director::Director() {
 }
 
 Director::~Director() {
-    // Ordre imprescindible: primer l'escena (pot tenir recursos), després
-    // Screen (GPU device, finestra, subsystem de vídeo), i finalment SDL_Quit.
-    // Fer-ho així -- NO via atexit -- evita crashes a vkDestroyInstance quan
-    // el runtime desfà les llibreries abans que corren els destructors estàtics.
+    // Ordre imprescindible: primer l'escena (pot tenir recursos); després
+    // alliberem els recursos d'àudio del Cache mentre SDL encara està viu
+    // (en Meyers, el Cache es destrueix després de SDL_Quit i els streams
+    // dels JA_Music_t quedarien invalidats); després Audio (tanca l'audio
+    // device), Screen (GPU + finestra) i finalment SDL_Quit. Fer-ho així --
+    // NO via atexit -- evita crashes a vkDestroyInstance quan el runtime
+    // desfà les llibreries abans que corren els destructors estàtics.
     current_scene_.reset();
+    Resource::Cache::get().clearAudio();
+    Audio::destroy();
     Screen::get().shutdown();
     SDL_Quit();
 }
@@ -136,6 +151,7 @@ auto Director::iterate() -> SDL_AppResult {
     delta_ms = std::max(delta_ms, 0);
     last_ticks_ms_ = NOW_MS;
 
+    Audio::update();
     current_scene_->update(delta_ms);
     current_scene_->render();