296 lines
11 KiB
C++
296 lines
11 KiB
C++
#include "core/input/gamepad_manager.hpp"
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#include <algorithm>
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#include <iostream>
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#include <iterator>
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#include <string>
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#include <utility>
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#include "core/locale/locale.hpp"
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#include "core/rendering/notification_presets.hpp"
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namespace {
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#ifdef __EMSCRIPTEN__
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// A Emscripten, SDL 3.4+ no casa el GUID dels mandos web: Chrome/Android
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// no aporten Vendor/Product ID i el parser de SDL extreu dades brutes.
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// El W3C Gamepad API, però, garanteix un layout estàndard quan el mapping
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// reporta "standard", així que injectem un mapping SDL explícit amb eixe
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// layout per al GUID del joystick abans que SDL intenti obrir-lo com a
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// gamepad. Fora d'Emscripten és un no-op.
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void installWebStandardMapping(SDL_JoystickID jid) {
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SDL_GUID guid = SDL_GetJoystickGUIDForID(jid);
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char guid_str[33];
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SDL_GUIDToString(guid, guid_str, sizeof(guid_str));
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const char* name = SDL_GetJoystickNameForID(jid);
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if (name == nullptr || *name == '\0') { name = "Standard Gamepad"; }
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char mapping[512];
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SDL_snprintf(mapping, sizeof(mapping),
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"%s,%s,"
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"a:b0,b:b1,x:b2,y:b3,"
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"leftshoulder:b4,rightshoulder:b5,"
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"lefttrigger:b6,righttrigger:b7,"
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"back:b8,start:b9,"
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"leftstick:b10,rightstick:b11,"
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"dpup:b12,dpdown:b13,dpleft:b14,dpright:b15,"
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"guide:b16,"
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"leftx:a0,lefty:a1,rightx:a2,righty:a3,"
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"platform:Emscripten",
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guid_str,
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name);
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SDL_AddGamepadMapping(mapping);
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}
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#else
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void installWebStandardMapping(SDL_JoystickID /*jid*/) {}
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#endif
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} // namespace
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auto GamepadManager::get() -> GamepadManager& {
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static GamepadManager instance_;
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return instance_;
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}
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auto GamepadManager::prettyName(const char* raw) -> std::string {
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std::string name = (raw != nullptr && *raw != '\0') ? std::string(raw) : std::string("Gamepad");
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const auto POS = name.find_first_of("([");
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if (POS != std::string::npos) { name.erase(POS); }
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while (!name.empty() && name.back() == ' ') { name.pop_back(); }
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if (name.empty()) { name = "Gamepad"; }
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return name;
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}
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auto GamepadManager::uniqueName(const std::string& base) const -> std::string {
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const bool COLLISION = std::ranges::any_of(
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entries_,
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[&](const Entry& e) { return e.pretty_name == base; });
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if (!COLLISION) { return base; }
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// Format " #N" començant a #2 — la primera ocurrència manté el nom net.
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for (int i = 2; i < 100; ++i) {
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std::string candidate = base + " #" + std::to_string(i);
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const bool MATCH = std::ranges::any_of(
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entries_,
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[&](const Entry& e) { return e.pretty_name == candidate; });
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if (!MATCH) { return candidate; }
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}
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return base; // cas ultra-improbable: 99 mandos idèntics connectats
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}
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void GamepadManager::addGamepad(SDL_JoystickID jid, bool notify) {
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// Dedup per `instance_id`: SDL encua un SDL_EVENT_GAMEPAD_ADDED per
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// cada mando ja connectat quan s'inicialitza el subsistema, a més
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// dels que ja hem obert a `init()`. Sense aquesta guarda, el mateix
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// mando s'afegiria dues vegades (silenciós + notificat amb sufix
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// "#2") i qualsevol referència via `getPrimary`/`entries_` seria
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// ambigua.
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const bool ALREADY_KNOWN = std::ranges::any_of(
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entries_,
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[jid](const Entry& e) { return e.instance_id == jid; });
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if (ALREADY_KNOWN) { return; }
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installWebStandardMapping(jid);
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if (!SDL_IsGamepad(jid)) { return; }
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SDL_Gamepad* pad = SDL_OpenGamepad(jid);
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if (pad == nullptr) {
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std::cout << "GamepadManager: SDL_OpenGamepad(" << jid
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<< ") ha fallat: " << SDL_GetError() << '\n';
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return;
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}
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std::string name = uniqueName(prettyName(SDL_GetGamepadName(pad)));
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// `SDL_GetGamepadPath` pot tornar null a backends que no exposen ruta
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// física (Emscripten, alguns drivers). Buit com a fallback; la
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// reconnexió es resoldrà per nom.
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const char* raw_path = SDL_GetGamepadPath(pad);
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std::string path = (raw_path != nullptr) ? raw_path : "";
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std::cout << "GamepadManager: connectat " << name
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<< (path.empty() ? "" : " [" + path + "]") << '\n';
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entries_.push_back(Entry{.pad = pad, .instance_id = jid, .pretty_name = name, .path = path});
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// Hot-plug: si alguna assignació pendent encaixa amb aquest mando,
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// la vinculem ara. Primer intentem per path exacte, després per nom.
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for (auto& a : assignments_) {
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if (a.pad != nullptr) { continue; }
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if (a.name.empty() && a.path.empty()) { continue; }
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rebindAssignment(a);
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}
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if (notify) {
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Notification::notify(name + ' ' + Locale::get().text("notification.gamepad_connected"));
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}
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}
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void GamepadManager::removeGamepad(SDL_JoystickID jid) {
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auto it = std::ranges::find_if(
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entries_,
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[jid](const Entry& e) { return e.instance_id == jid; });
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if (it == entries_.end()) { return; }
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std::string name = std::move(it->pretty_name);
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SDL_Gamepad* pad = it->pad;
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if (pad != nullptr) { SDL_CloseGamepad(pad); }
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std::cout << "GamepadManager: desconnectat " << name << '\n';
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entries_.erase(it);
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// Qualsevol assignació que apuntava a aquest mando queda amb `pad`
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// a null però conservem nom/ruta: si el mando es torna a connectar,
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// el hot-plug el re-vincularà automàticament.
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for (auto& a : assignments_) {
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if (a.pad == pad) { a.pad = nullptr; }
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}
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Notification::notify(name + ' ' + Locale::get().text("notification.gamepad_disconnected"));
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}
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void GamepadManager::init() {
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if (initialized_) { return; }
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if (!SDL_InitSubSystem(SDL_INIT_GAMEPAD)) {
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std::cout << "GamepadManager: SDL_INIT_GAMEPAD ha fallat: "
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<< SDL_GetError() << '\n';
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return;
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}
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// `gamecontrollerdb.txt` és opcional. Si no existeix, SDL retorna -1 i
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// continuem amb les definicions internes del sistema.
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const int ADDED = SDL_AddGamepadMappingsFromFile("data/input/gamecontrollerdb.txt");
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if (ADDED > 0) {
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std::cout << "GamepadManager: " << ADDED << " mappings de gamecontrollerdb.txt\n";
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}
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int count = 0;
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SDL_JoystickID* ids = SDL_GetJoysticks(&count);
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if (ids != nullptr) {
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for (int i = 0; i < count; ++i) {
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addGamepad(ids[i], /*notify=*/false);
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}
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SDL_free(ids);
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}
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initialized_ = true;
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}
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void GamepadManager::shutdown() {
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for (auto& entry : entries_) {
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if (entry.pad != nullptr) { SDL_CloseGamepad(entry.pad); }
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}
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entries_.clear();
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if (initialized_) {
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SDL_QuitSubSystem(SDL_INIT_GAMEPAD);
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initialized_ = false;
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}
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}
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void GamepadManager::handleEvent(const SDL_Event& ev) {
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if (ev.type == SDL_EVENT_GAMEPAD_ADDED) {
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addGamepad(ev.gdevice.which, /*notify=*/true);
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} else if (ev.type == SDL_EVENT_GAMEPAD_REMOVED) {
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removeGamepad(ev.gdevice.which);
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}
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}
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auto GamepadManager::getPrimary() const -> SDL_Gamepad* {
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return entries_.empty() ? nullptr : entries_.front().pad;
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}
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auto GamepadManager::getCount() const -> std::size_t {
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return entries_.size();
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}
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auto GamepadManager::getByPlayerIndex(std::size_t idx) const -> SDL_Gamepad* {
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return idx < entries_.size() ? entries_[idx].pad : nullptr;
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}
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auto GamepadManager::getAll() const -> std::vector<Info> {
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std::vector<Info> result;
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result.reserve(entries_.size());
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std::ranges::transform(entries_, std::back_inserter(result), [](const Entry& e) {
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return Info{.pad = e.pad, .name = e.pretty_name, .path = e.path};
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});
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return result;
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}
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auto GamepadManager::getForPlayer(int player_id) const -> SDL_Gamepad* {
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if (player_id < 0 || player_id >= MAX_PLAYERS) { return nullptr; }
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return assignments_[static_cast<std::size_t>(player_id)].pad;
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}
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void GamepadManager::rebindAssignment(Assignment& a) {
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// Primera passada: coincidència exacta per path. És el cas estable
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// (mateix mando, mateix port) i no canvia res de l'assignació.
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if (!a.path.empty()) {
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auto it = std::ranges::find_if(
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entries_,
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[&](const Entry& e) { return !e.path.empty() && e.path == a.path; });
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if (it != entries_.end()) {
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a.pad = it->pad;
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return;
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}
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}
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// Segona passada: coincidència per nom (mando canviat de port USB).
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// Acceptem la primera entrada que no estigui ja vinculada a una altra
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// assignació — així dos mandos amb el mateix nom no es pisen.
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if (!a.name.empty()) {
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for (const auto& e : entries_) {
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if (e.pretty_name != a.name) { continue; }
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const bool TAKEN = std::ranges::any_of(
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assignments_,
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[&](const Assignment& other) { return &other != &a && other.pad == e.pad; });
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if (TAKEN) { continue; }
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a.pad = e.pad;
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a.path = e.path; // actualitzem ruta persistida
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return;
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}
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}
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a.pad = nullptr;
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}
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void GamepadManager::assignToPlayer(int player_id, const std::string& name, const std::string& path) {
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if (player_id < 0 || player_id >= MAX_PLAYERS) { return; }
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auto& a = assignments_[static_cast<std::size_t>(player_id)];
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a.name = name;
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a.path = path;
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a.pad = nullptr;
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if (name.empty() && path.empty()) { return; }
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rebindAssignment(a);
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// Last-wins: si l'altre jugador tenia el mateix mando vinculat, el
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// desvinculem (conservant el seu nom/path perquè el menú pugui
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// mostrar l'estat "pendent" i oferir re-selecció).
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if (a.pad != nullptr) {
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for (auto& other : assignments_) {
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if (&other != &a && other.pad == a.pad) {
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std::cout << "GamepadManager: mando " << a.name
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<< " reassignat (last-wins)\n";
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other.pad = nullptr;
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}
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}
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}
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}
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void GamepadManager::unassignFromPlayer(int player_id) {
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if (player_id < 0 || player_id >= MAX_PLAYERS) { return; }
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assignments_[static_cast<std::size_t>(player_id)] = Assignment{};
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}
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auto GamepadManager::autoAssignFreeSlots() -> std::vector<AutoAssigned> {
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std::vector<AutoAssigned> assigned;
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for (int pid = 0; pid < MAX_PLAYERS; ++pid) {
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auto& slot = assignments_[static_cast<std::size_t>(pid)];
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if (slot.pad != nullptr) { continue; }
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// Primer mando que cap altre slot no haja reclamat. Així respectem
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// qualsevol assignació persistida que ja haja vinculat un pad
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// concret i no el reassignem a un jugador diferent.
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for (const auto& e : entries_) {
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const bool TAKEN = std::ranges::any_of(
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assignments_,
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[&](const Assignment& other) { return other.pad == e.pad; });
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if (TAKEN) { continue; }
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slot.pad = e.pad;
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slot.name = e.pretty_name;
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slot.path = e.path;
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assigned.push_back(AutoAssigned{.player_id = pid, .name = e.pretty_name, .path = e.path});
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std::cout << "GamepadManager: auto-assigned " << e.pretty_name
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<< " → P" << (pid + 1) << '\n';
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break;
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}
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}
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return assigned;
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}
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