refactor: JA_Sound_t RAII — buffer amb unique_ptr + SDLFreeDeleter, elimina JA_NewSound

source/core/jail/jail_audio.hpp

@@ -7,12 +7,22 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <memory>
 #include <string>
 #include <vector>
 
 #define STB_VORBIS_HEADER_ONLY
 #include "external/stb_vorbis.h"
 
+// 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) SDL_free(p);
+    }
+};
+
 // --- Public Enums ---
 enum JA_Channel_state {
     JA_CHANNEL_INVALID,
@@ -36,7 +46,9 @@ enum JA_Music_state {
 struct JA_Sound_t {
     SDL_AudioSpec spec{SDL_AUDIO_S16, 2, 48000};
     Uint32 length{0};
-    Uint8* buffer{nullptr};
+    // 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;
 };
 
 struct JA_Channel_t {
@@ -172,7 +184,7 @@ inline void JA_Update() {
             if (channels[i].state == JA_CHANNEL_PLAYING) {
                 if (channels[i].times != 0) {
                     if ((Uint32)SDL_GetAudioStreamAvailable(channels[i].stream) < (channels[i].sound->length / 2)) {
-                        SDL_PutAudioStreamData(channels[i].stream, channels[i].sound->buffer, channels[i].sound->length);
+                        SDL_PutAudioStreamData(channels[i].stream, channels[i].sound->buffer.get(), channels[i].sound->length);
                         if (channels[i].times > 0) channels[i].times--;
                     }
                 } else {
@@ -355,31 +367,26 @@ inline void JA_EnableMusic(const bool value) {
 
 // --- Sound Functions ---
 
-inline JA_Sound_t* JA_NewSound(Uint8* buffer, Uint32 length) {
-    JA_Sound_t* sound = new JA_Sound_t();
-    sound->buffer = buffer;
-    sound->length = length;
-    return sound;
-}
-
 inline JA_Sound_t* JA_LoadSound(uint8_t* buffer, uint32_t size) {
-    JA_Sound_t* sound = new JA_Sound_t();
-    if (!SDL_LoadWAV_IO(SDL_IOFromMem(buffer, size), 1, &sound->spec, &sound->buffer, &sound->length)) {
+    auto sound = std::make_unique<JA_Sound_t>();
+    Uint8* raw = nullptr;
+    if (!SDL_LoadWAV_IO(SDL_IOFromMem(buffer, size), 1, &sound->spec, &raw, &sound->length)) {
         SDL_Log("Failed to load WAV from memory: %s", SDL_GetError());
-        delete sound;
         return nullptr;
     }
-    return sound;
+    sound->buffer.reset(raw);  // adopta el SDL_malloc'd buffer
+    return sound.release();
 }
 
 inline JA_Sound_t* JA_LoadSound(const char* filename) {
-    JA_Sound_t* sound = new JA_Sound_t();
-    if (!SDL_LoadWAV(filename, &sound->spec, &sound->buffer, &sound->length)) {
+    auto sound = std::make_unique<JA_Sound_t>();
+    Uint8* raw = nullptr;
+    if (!SDL_LoadWAV(filename, &sound->spec, &raw, &sound->length)) {
         SDL_Log("Failed to load WAV file: %s", SDL_GetError());
-        delete sound;
         return nullptr;
     }
-    return sound;
+    sound->buffer.reset(raw);  // adopta el SDL_malloc'd buffer
+    return sound.release();
 }
 
 inline int JA_PlaySound(JA_Sound_t* sound, const int loop = 0, const int group = 0) {
@@ -411,7 +418,7 @@ inline int JA_PlaySoundOnChannel(JA_Sound_t* sound, const int channel, const int
         return -1;
     }
 
-    SDL_PutAudioStreamData(channels[channel].stream, channels[channel].sound->buffer, channels[channel].sound->length);
+    SDL_PutAudioStreamData(channels[channel].stream, channels[channel].sound->buffer.get(), channels[channel].sound->length);
     SDL_SetAudioStreamGain(channels[channel].stream, JA_soundVolume[group]);
     SDL_BindAudioStream(sdlAudioDevice, channels[channel].stream);
 
@@ -423,7 +430,7 @@ inline void JA_DeleteSound(JA_Sound_t* sound) {
     for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++) {
         if (channels[i].sound == sound) JA_StopChannel(i);
     }
-    SDL_free(sound->buffer);
+    // buffer es destrueix automàticament via RAII (SDLFreeDeleter).
     delete sound;
 }
 

source/core/jail/jfile.cpp

@@ -161,18 +161,31 @@ std::vector<char> file_readfile(const char* resourcename) {
 // Accepta rutes amb subdirectoris (ex: "jailgames/aee") i crea tota la jerarquia.
 void file_setconfigfolder(const char* foldername) {
 #ifdef _WIN32
-    config_folder = std::string(getenv("APPDATA")) + "/" + foldername;
+    const char* base = getenv("APPDATA");
+    if (!base) base = "C:/";
+    config_folder = std::string(base) + "/" + foldername;
 #elif __APPLE__
     struct passwd* pw = getpwuid(getuid());
-    const char* homedir = pw->pw_dir;
+    const char* homedir = (pw && pw->pw_dir) ? pw->pw_dir : nullptr;
+    if (!homedir) homedir = getenv("HOME");
+    if (!homedir) homedir = "/tmp";
     config_folder = std::string(homedir) + "/Library/Application Support/" + foldername;
 #elif __linux__
+    // Nota emscripten: `__linux__` també està definit, però `getpwuid` no
+    // troba cap /etc/passwd al MEMFS i retorna nullptr. Amb els fallbacks
+    // HOME → /tmp evitem crashejar al primer arranque dins del navegador.
+    // La config no persistirà entre recàrregues de la pàgina (MEMFS és
+    // volàtil); caldria IDBFS si volguéssem persistència a web.
     struct passwd* pw = getpwuid(getuid());
-    const char* homedir = pw->pw_dir;
+    const char* homedir = (pw && pw->pw_dir) ? pw->pw_dir : nullptr;
+    if (!homedir) homedir = getenv("HOME");
+    if (!homedir) homedir = "/tmp";
     config_folder = std::string(homedir) + "/.config/" + foldername;
 #endif
 
-    std::filesystem::create_directories(config_folder);
+    if (!config_folder.empty()) {
+        std::filesystem::create_directories(config_folder);
+    }
 }
 
 const char* file_getconfigfolder() {

source/core/rendering/screen.cpp

@@ -5,7 +5,9 @@
 
 #include "core/locale/locale.hpp"
 #include "core/rendering/overlay.hpp"
+#ifndef NO_SHADERS
 #include "core/rendering/sdl3gpu/sdl3gpu_shader.hpp"
+#endif
 #include "game/defines.hpp"
 #include "game/options.hpp"
 #include "utils/utils.hpp"
@@ -56,10 +58,12 @@ Screen::~Screen() {
     Options::window.zoom = zoom_;
     Options::window.fullscreen = fullscreen_;
 
-    // Destrueix el backend GPU
+    // Destrueix el backend GPU (només existeix si s'ha compilat amb shaders)
     if (shader_backend_) {
+#ifndef NO_SHADERS
         auto* gpu = dynamic_cast<Rendering::SDL3GPUShader*>(shader_backend_.get());
         if (gpu) gpu->destroy();
+#endif
         shader_backend_.reset();
     }
 
@@ -69,6 +73,13 @@ Screen::~Screen() {
 }
 
 void Screen::initShaders() {
+#ifdef NO_SHADERS
+    // Build sense shaders (p.ex. emscripten/WebGL2, on SDL3 GPU no està
+    // disponible). Es salta tota la inicialització — shader_backend_ es
+    // queda nul·lptr i tots els `if (shader_backend_)` del render path
+    // curtcircuiten cap al fallback SDL_Renderer.
+    return;
+#else
     if (!Options::video.gpu_acceleration) return;
 
     shader_backend_ = std::make_unique<Rendering::SDL3GPUShader>();
@@ -122,6 +133,7 @@ void Screen::initShaders() {
 
     applyCurrentPostFXPreset();
     applyCurrentCrtPiPreset();
+#endif
 }
 
 void Screen::present(Uint32* pixel_data) {