mirror of https://github.com/bsnes-emu/bsnes.git
81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
#ifndef RUBY_INPUT_JOYPAD_SDL
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#define RUBY_INPUT_JOYPAD_SDL
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namespace ruby {
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struct InputJoypadSDL {
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struct Joypad {
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shared_pointer<HID::Joypad> hid{new HID::Joypad};
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unsigned id = 0;
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SDL_Joystick* handle = nullptr;
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};
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vector<Joypad> joypads;
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auto assign(shared_pointer<HID::Joypad> hid, unsigned groupID, unsigned inputID, int16_t value) -> void {
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auto& group = hid->group(groupID);
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if(group.input(inputID).value() == value) return;
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if(input.onChange) input.onChange(hid, groupID, inputID, group.input(inputID).value(), value);
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group.input(inputID).setValue(value);
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}
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auto poll(vector<shared_pointer<HID::Device>>& devices) -> void {
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SDL_JoystickUpdate();
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for(auto& jp : joypads) {
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for(auto n : range(jp.hid->axes())) {
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assign(jp.hid, HID::Joypad::GroupID::Axis, n, (int16_t)SDL_JoystickGetAxis(jp.handle, n));
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}
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for(signed n = 0; n < (signed)jp.hid->hats().size() - 1; n += 2) {
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uint8_t state = SDL_JoystickGetHat(jp.handle, n >> 1);
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assign(jp.hid, HID::Joypad::GroupID::Hat, n + 0, state & SDL_HAT_LEFT ? -32768 : state & SDL_HAT_RIGHT ? +32767 : 0);
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assign(jp.hid, HID::Joypad::GroupID::Hat, n + 1, state & SDL_HAT_UP ? -32768 : state & SDL_HAT_DOWN ? +32767 : 0);
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}
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for(auto n : range(jp.hid->buttons())) {
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assign(jp.hid, HID::Joypad::GroupID::Button, n, (bool)SDL_JoystickGetButton(jp.handle, n));
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}
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devices.append(jp.hid);
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}
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}
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auto init() -> bool {
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SDL_InitSubSystem(SDL_INIT_JOYSTICK);
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SDL_JoystickEventState(SDL_IGNORE);
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for(auto id : range(SDL_NumJoysticks())) {
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Joypad jp;
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jp.id = id;
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jp.handle = SDL_JoystickOpen(id);
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unsigned axes = SDL_JoystickNumAxes(jp.handle);
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unsigned hats = SDL_JoystickNumHats(jp.handle) * 2;
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unsigned buttons = 32; //there is no SDL_JoystickNumButtons()
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jp.hid->setID(3 + jp.id);
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for(auto n : range(axes)) jp.hid->axes().append(n);
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for(auto n : range(hats)) jp.hid->hats().append(n);
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for(auto n : range(buttons)) jp.hid->buttons().append(n);
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jp.hid->setRumble(false);
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joypads.append(jp);
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}
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return true;
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}
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auto term() -> void {
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for(auto& jp : joypads) {
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SDL_JoystickClose(jp.handle);
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}
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joypads.reset();
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SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
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}
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};
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}
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#endif
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