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#ifndef RUBY_INPUT_JOYPAD_XINPUT
#define RUBY_INPUT_JOYPAD_XINPUT
//documented functionality
#define oXInputGetState "XInputGetState"
#define oXInputSetState "XInputSetState"
typedef DWORD WINAPI (*pXInputGetState)(DWORD dwUserIndex, XINPUT_STATE* pState);
typedef DWORD WINAPI (*pXInputSetState)(DWORD dwUserIndex, XINPUT_VIBRATION* pVibration);
//undocumented functionality
#define oXInputGetStateEx (LPCSTR)100
#define oXInputWaitForGuideButton (LPCSTR)101
#define oXInputCancelGuideButtonWait (LPCSTR)102
#define oXInputPowerOffController (LPCSTR)103
typedef DWORD WINAPI (*pXInputGetStateEx)(DWORD dwUserIndex, XINPUT_STATE* pState);
typedef DWORD WINAPI (*pXInputWaitForGuideButton)(DWORD dwUserIndex, DWORD dwFlag, void* pUnknown);
typedef DWORD WINAPI (*pXInputCancelGuideButtonWait)(DWORD dwUserIndex);
typedef DWORD WINAPI (*pXInputPowerOffController)(DWORD dwUserIndex);
#define XINPUT_GAMEPAD_GUIDE 0x0400
namespace ruby {
struct InputJoypadXInput {
HMODULE libxinput = nullptr;
pXInputGetStateEx XInputGetStateEx = nullptr;
pXInputSetState XInputSetState = nullptr;
struct Joypad {
HID::Joypad hid;
unsigned id;
};
vector<Joypad> joypads;
void assign(HID::Joypad& hid, unsigned groupID, unsigned inputID, int16_t value) {
auto& group = hid.group[groupID];
if(group.input[inputID].value == value) return;
if(input.onChange) input.onChange(hid, groupID, inputID, group.input[inputID].value, value);
group.input[inputID].value = value;
}
void poll(vector<HID::Device*>& devices) {
for(auto& jp : joypads) {
XINPUT_STATE state;
if(XInputGetStateEx(jp.id, &state) != ERROR_SUCCESS) continue;
//flip vertical axes so that -32768 = up, +32767 = down
uint16_t axisLY = 32768 + state.Gamepad.sThumbLY;
uint16_t axisRY = 32768 + state.Gamepad.sThumbRY;
assign(jp.hid, HID::Joypad::GroupID::Axis, 0, (int16_t)state.Gamepad.sThumbLX);
assign(jp.hid, HID::Joypad::GroupID::Axis, 1, (int16_t)(~axisLY - 32768));
assign(jp.hid, HID::Joypad::GroupID::Axis, 2, (int16_t)state.Gamepad.sThumbRX);
assign(jp.hid, HID::Joypad::GroupID::Axis, 3, (int16_t)(~axisRY - 32768));
int16_t hatX = 0;
int16_t hatY = 0;
if(state.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_UP ) hatY = -32768;
if(state.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_DOWN ) hatY = +32767;
if(state.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_LEFT ) hatX = -32768;
if(state.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_RIGHT) hatX = +32767;
assign(jp.hid, HID::Joypad::GroupID::Hat, 0, hatX);
assign(jp.hid, HID::Joypad::GroupID::Hat, 1, hatY);
//scale trigger ranges for up to down from (0 to 255) to (-32768 to +32767)
uint16_t triggerL = state.Gamepad.bLeftTrigger;
uint16_t triggerR = state.Gamepad.bRightTrigger;
triggerL = triggerL << 8 | triggerL << 0;
triggerR = triggerR << 8 | triggerR << 0;
assign(jp.hid, HID::Joypad::GroupID::Trigger, 0, (int16_t)(triggerL - 32768));
assign(jp.hid, HID::Joypad::GroupID::Trigger, 1, (int16_t)(triggerR - 32768));
assign(jp.hid, HID::Joypad::GroupID::Button, 0, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_A));
assign(jp.hid, HID::Joypad::GroupID::Button, 1, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_B));
assign(jp.hid, HID::Joypad::GroupID::Button, 2, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_X));
assign(jp.hid, HID::Joypad::GroupID::Button, 3, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_Y));
assign(jp.hid, HID::Joypad::GroupID::Button, 4, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_BACK));
assign(jp.hid, HID::Joypad::GroupID::Button, 5, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_START));
assign(jp.hid, HID::Joypad::GroupID::Button, 6, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_SHOULDER));
assign(jp.hid, HID::Joypad::GroupID::Button, 7, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_SHOULDER));
assign(jp.hid, HID::Joypad::GroupID::Button, 8, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_THUMB));
assign(jp.hid, HID::Joypad::GroupID::Button, 9, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_THUMB));
assign(jp.hid, HID::Joypad::GroupID::Button, 10, (bool)(state.Gamepad.wButtons & XINPUT_GAMEPAD_GUIDE));
devices.append(&jp.hid);
}
}
bool rumble(uint64_t id, bool enable) {
for(auto& jp : joypads) {
if(jp.hid.id != id) continue;
XINPUT_VIBRATION vibration;
memset(&vibration, 0, sizeof(XINPUT_VIBRATION));
vibration.wLeftMotorSpeed = enable ? 65535 : 0; //low-frequency motor (0 = off, 65535 = max)
vibration.wRightMotorSpeed = enable ? 65535 : 0; //high-frequency motor (0 = off, 65535 = max)
XInputSetState(jp.id, &vibration);
return true;
}
return false;
}
bool init() {
if(!libxinput) libxinput = LoadLibraryA("xinput1_3.dll");
if(!libxinput) return false;
//XInputGetStateEx is an undocumented function; but is required to get the state of the guide button
//if for some reason it is not available, fall back on XInputGetState, which takes the same parameters
XInputGetStateEx = (pXInputGetStateEx)GetProcAddress(libxinput, oXInputGetStateEx);
XInputSetState = (pXInputSetState)GetProcAddress(libxinput, oXInputSetState);
if(!XInputGetStateEx) XInputGetStateEx = (pXInputGetStateEx)GetProcAddress(libxinput, oXInputGetState);
if(!XInputGetStateEx || !XInputSetState) return term(), false;
//XInput supports a maximum of four controllers
//add all four to devices list now. If they are not connected, they will not show up in poll() results
for(unsigned id = 0; id < 4; id++) {
Joypad jp;
jp.id = id;
jp.hid.id = (uint64_t)(1 + id) << 32 | 0x045e << 16 | 0x028e << 0; //Xbox 360 Player# + VendorID + ProductID
jp.hid.axis().append({"LeftThumbX"});
jp.hid.axis().append({"LeftThumbY"});
jp.hid.axis().append({"RightThumbX"});
jp.hid.axis().append({"RightThumbY"});
jp.hid.hat().append({"HatX"});
jp.hid.hat().append({"HatY"});
jp.hid.trigger().append({"LeftTrigger"});
jp.hid.trigger().append({"RightTrigger"});
jp.hid.button().append({"A"});
jp.hid.button().append({"B"});
jp.hid.button().append({"X"});
jp.hid.button().append({"Y"});
jp.hid.button().append({"Back"});
jp.hid.button().append({"Start"});
jp.hid.button().append({"LeftShoulder"});
jp.hid.button().append({"RightShoulder"});
jp.hid.button().append({"LeftThumb"});
jp.hid.button().append({"RightThumb"});
jp.hid.button().append({"Guide"});
joypads.append(jp);
}
return true;
}
void term() {
if(!libxinput) return;
FreeLibrary(libxinput);
libxinput = nullptr;
}
};
}
#endif
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