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virtualx-engine/platform/windows/joypad_windows.cpp

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/**************************************************************************/
/* joypad_windows.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "joypad_windows.h"
#include <oleauto.h>
#include <wbemidl.h>
#if defined(__GNUC__)
// Workaround GCC warning from -Wcast-function-type.
#define GetProcAddress (void *)GetProcAddress
#endif
DWORD WINAPI _xinput_get_state(DWORD dwUserIndex, XINPUT_STATE *pState) {
return ERROR_DEVICE_NOT_CONNECTED;
}
DWORD WINAPI _xinput_set_state(DWORD dwUserIndex, XINPUT_VIBRATION *pVibration) {
return ERROR_DEVICE_NOT_CONNECTED;
}
JoypadWindows::JoypadWindows() {
}
JoypadWindows::JoypadWindows(HWND *hwnd) {
input = Input::get_singleton();
hWnd = hwnd;
joypad_count = 0;
dinput = nullptr;
xinput_dll = nullptr;
xinput_get_state = nullptr;
xinput_set_state = nullptr;
load_xinput();
for (int i = 0; i < JOYPADS_MAX; i++) {
attached_joypads[i] = false;
}
HRESULT result = DirectInput8Create(GetModuleHandle(nullptr), DIRECTINPUT_VERSION, IID_IDirectInput8, (void **)&dinput, nullptr);
if (result == DI_OK) {
probe_joypads();
} else {
ERR_PRINT("Couldn't initialize DirectInput. Error: " + itos(result));
if (result == DIERR_OUTOFMEMORY) {
ERR_PRINT("The Windows DirectInput subsystem could not allocate sufficient memory.");
ERR_PRINT("Rebooting your PC may solve this issue.");
}
// Ensure dinput is still a nullptr.
dinput = nullptr;
}
}
JoypadWindows::~JoypadWindows() {
close_joypad();
if (dinput) {
dinput->Release();
}
unload_xinput();
}
bool JoypadWindows::have_device(const GUID &p_guid) {
for (int i = 0; i < JOYPADS_MAX; i++) {
if (d_joypads[i].guid == p_guid) {
d_joypads[i].confirmed = true;
return true;
}
}
return false;
}
// adapted from SDL2, works a lot better than the MSDN version
bool JoypadWindows::is_xinput_device(const GUID *p_guid) {
static GUID IID_ValveStreamingGamepad = { MAKELONG(0x28DE, 0x11FF), 0x28DE, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_X360WiredGamepad = { MAKELONG(0x045E, 0x02A1), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_X360WirelessGamepad = { MAKELONG(0x045E, 0x028E), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_XSWirelessGamepad = { MAKELONG(0x045E, 0x0B13), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_XEliteWirelessGamepad = { MAKELONG(0x045E, 0x0B05), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_XOneWiredGamepad = { MAKELONG(0x045E, 0x02FF), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_XOneWirelessGamepad = { MAKELONG(0x045E, 0x02DD), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_XOneNewWirelessGamepad = { MAKELONG(0x045E, 0x02D1), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_XOneSWirelessGamepad = { MAKELONG(0x045E, 0x02EA), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_XOneSBluetoothGamepad = { MAKELONG(0x045E, 0x02E0), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
static GUID IID_XOneEliteWirelessGamepad = { MAKELONG(0x045E, 0x02E3), 0x0000, 0x0000, { 0x00, 0x00, 0x50, 0x49, 0x44, 0x56, 0x49, 0x44 } };
if (memcmp(p_guid, &IID_ValveStreamingGamepad, sizeof(*p_guid)) == 0 ||
memcmp(p_guid, &IID_X360WiredGamepad, sizeof(*p_guid)) == 0 ||
memcmp(p_guid, &IID_X360WirelessGamepad, sizeof(*p_guid)) == 0 ||
memcmp(p_guid, &IID_XSWirelessGamepad, sizeof(*p_guid)) == 0 ||
memcmp(p_guid, &IID_XEliteWirelessGamepad, sizeof(*p_guid)) == 0 ||
memcmp(p_guid, &IID_XOneWiredGamepad, sizeof(*p_guid)) == 0 ||
memcmp(p_guid, &IID_XOneWirelessGamepad, sizeof(*p_guid)) == 0 ||
memcmp(p_guid, &IID_XOneNewWirelessGamepad, sizeof(*p_guid)) == 0 ||
memcmp(p_guid, &IID_XOneSWirelessGamepad, sizeof(*p_guid)) == 0 ||
memcmp(p_guid, &IID_XOneSBluetoothGamepad, sizeof(*p_guid)) == 0 ||
memcmp(p_guid, &IID_XOneEliteWirelessGamepad, sizeof(*p_guid)) == 0)
return true;
PRAWINPUTDEVICELIST dev_list = nullptr;
unsigned int dev_list_count = 0;
if (GetRawInputDeviceList(nullptr, &dev_list_count, sizeof(RAWINPUTDEVICELIST)) == (UINT)-1) {
return false;
}
dev_list = (PRAWINPUTDEVICELIST)memalloc(sizeof(RAWINPUTDEVICELIST) * dev_list_count);
ERR_FAIL_NULL_V_MSG(dev_list, false, "Out of memory.");
if (GetRawInputDeviceList(dev_list, &dev_list_count, sizeof(RAWINPUTDEVICELIST)) == (UINT)-1) {
memfree(dev_list);
return false;
}
for (unsigned int i = 0; i < dev_list_count; i++) {
RID_DEVICE_INFO rdi;
char dev_name[128];
UINT rdiSize = sizeof(rdi);
UINT nameSize = sizeof(dev_name);
rdi.cbSize = rdiSize;
if ((dev_list[i].dwType == RIM_TYPEHID) &&
(GetRawInputDeviceInfoA(dev_list[i].hDevice, RIDI_DEVICEINFO, &rdi, &rdiSize) != (UINT)-1) &&
(MAKELONG(rdi.hid.dwVendorId, rdi.hid.dwProductId) == (LONG)p_guid->Data1) &&
(GetRawInputDeviceInfoA(dev_list[i].hDevice, RIDI_DEVICENAME, &dev_name, &nameSize) != (UINT)-1) &&
(strstr(dev_name, "IG_") != nullptr)) {
memfree(dev_list);
return true;
}
}
memfree(dev_list);
return false;
}
bool JoypadWindows::setup_dinput_joypad(const DIDEVICEINSTANCE *instance) {
ERR_FAIL_NULL_V_MSG(dinput, false, "DirectInput not initialized. Rebooting your PC may solve this issue.");
HRESULT hr;
int num = input->get_unused_joy_id();
if (have_device(instance->guidInstance) || num == -1) {
return false;
}
d_joypads[num] = dinput_gamepad();
dinput_gamepad *joy = &d_joypads[num];
const DWORD devtype = (instance->dwDevType & 0xFF);
if ((devtype != DI8DEVTYPE_JOYSTICK) && (devtype != DI8DEVTYPE_GAMEPAD) && (devtype != DI8DEVTYPE_1STPERSON) && (devtype != DI8DEVTYPE_DRIVING)) {
return false;
}
hr = dinput->CreateDevice(instance->guidInstance, &joy->di_joy, nullptr);
if (FAILED(hr)) {
return false;
}
const GUID &guid = instance->guidProduct;
char uid[128];
ERR_FAIL_COND_V_MSG(memcmp(&guid.Data4[2], "PIDVID", 6), false, "DirectInput device not recognized.");
WORD type = BSWAP16(0x03);
WORD vendor = BSWAP16(LOWORD(guid.Data1));
WORD product = BSWAP16(HIWORD(guid.Data1));
WORD version = 0;
sprintf_s(uid, "%04x%04x%04x%04x%04x%04x%04x%04x", type, 0, vendor, 0, product, 0, version, 0);
id_to_change = num;
slider_count = 0;
joy->di_joy->SetDataFormat(&c_dfDIJoystick2);
joy->di_joy->SetCooperativeLevel(*hWnd, DISCL_FOREGROUND);
joy->di_joy->EnumObjects(objectsCallback, this, 0);
joy->joy_axis.sort();
joy->guid = instance->guidInstance;
input->joy_connection_changed(num, true, instance->tszProductName, uid);
joy->attached = true;
joy->id = num;
attached_joypads[num] = true;
joy->confirmed = true;
joypad_count++;
return true;
}
void JoypadWindows::setup_joypad_object(const DIDEVICEOBJECTINSTANCE *ob, int p_joy_id) {
if (ob->dwType & DIDFT_AXIS) {
HRESULT res;
DIPROPRANGE prop_range;
DIPROPDWORD dilong;
LONG ofs;
if (ob->guidType == GUID_XAxis) {
ofs = DIJOFS_X;
} else if (ob->guidType == GUID_YAxis) {
ofs = DIJOFS_Y;
} else if (ob->guidType == GUID_ZAxis) {
ofs = DIJOFS_Z;
} else if (ob->guidType == GUID_RxAxis) {
ofs = DIJOFS_RX;
} else if (ob->guidType == GUID_RyAxis) {
ofs = DIJOFS_RY;
} else if (ob->guidType == GUID_RzAxis) {
ofs = DIJOFS_RZ;
} else if (ob->guidType == GUID_Slider) {
if (slider_count < 2) {
ofs = DIJOFS_SLIDER(slider_count);
slider_count++;
} else {
return;
}
} else {
return;
}
prop_range.diph.dwSize = sizeof(DIPROPRANGE);
prop_range.diph.dwHeaderSize = sizeof(DIPROPHEADER);
prop_range.diph.dwObj = ob->dwType;
prop_range.diph.dwHow = DIPH_BYID;
prop_range.lMin = -MAX_JOY_AXIS;
prop_range.lMax = +MAX_JOY_AXIS;
dinput_gamepad &joy = d_joypads[p_joy_id];
res = IDirectInputDevice8_SetProperty(joy.di_joy, DIPROP_RANGE, &prop_range.diph);
if (FAILED(res)) {
return;
}
dilong.diph.dwSize = sizeof(dilong);
dilong.diph.dwHeaderSize = sizeof(dilong.diph);
dilong.diph.dwObj = ob->dwType;
dilong.diph.dwHow = DIPH_BYID;
dilong.dwData = 0;
res = IDirectInputDevice8_SetProperty(joy.di_joy, DIPROP_DEADZONE, &dilong.diph);
if (FAILED(res)) {
return;
}
joy.joy_axis.push_back(ofs);
}
}
BOOL CALLBACK JoypadWindows::enumCallback(const DIDEVICEINSTANCE *p_instance, void *p_context) {
JoypadWindows *self = static_cast<JoypadWindows *>(p_context);
if (self->is_xinput_device(&p_instance->guidProduct)) {
return DIENUM_CONTINUE;
}
self->setup_dinput_joypad(p_instance);
return DIENUM_CONTINUE;
}
BOOL CALLBACK JoypadWindows::objectsCallback(const DIDEVICEOBJECTINSTANCE *p_instance, void *p_context) {
JoypadWindows *self = static_cast<JoypadWindows *>(p_context);
self->setup_joypad_object(p_instance, self->id_to_change);
return DIENUM_CONTINUE;
}
void JoypadWindows::close_joypad(int id) {
if (id == -1) {
for (int i = 0; i < JOYPADS_MAX; i++) {
close_joypad(i);
}
return;
}
if (!d_joypads[id].attached) {
return;
}
d_joypads[id].di_joy->Unacquire();
d_joypads[id].di_joy->Release();
d_joypads[id].attached = false;
attached_joypads[d_joypads[id].id] = false;
d_joypads[id].guid.Data1 = d_joypads[id].guid.Data2 = d_joypads[id].guid.Data3 = 0;
input->joy_connection_changed(d_joypads[id].id, false, "");
joypad_count--;
}
void JoypadWindows::probe_joypads() {
ERR_FAIL_NULL_MSG(dinput, "DirectInput not initialized. Rebooting your PC may solve this issue.");
DWORD dwResult;
for (DWORD i = 0; i < XUSER_MAX_COUNT; i++) {
ZeroMemory(&x_joypads[i].state, sizeof(XINPUT_STATE));
dwResult = xinput_get_state(i, &x_joypads[i].state);
if (dwResult == ERROR_SUCCESS) {
int id = input->get_unused_joy_id();
if (id != -1 && !x_joypads[i].attached) {
x_joypads[i].attached = true;
x_joypads[i].id = id;
x_joypads[i].ff_timestamp = 0;
x_joypads[i].ff_end_timestamp = 0;
x_joypads[i].vibrating = false;
attached_joypads[id] = true;
input->joy_connection_changed(id, true, "XInput Gamepad", "__XINPUT_DEVICE__");
}
} else if (x_joypads[i].attached) {
x_joypads[i].attached = false;
attached_joypads[x_joypads[i].id] = false;
input->joy_connection_changed(x_joypads[i].id, false, "");
}
}
for (int i = 0; i < joypad_count; i++) {
d_joypads[i].confirmed = false;
}
dinput->EnumDevices(DI8DEVCLASS_GAMECTRL, enumCallback, this, DIEDFL_ATTACHEDONLY);
for (int i = 0; i < joypad_count; i++) {
if (!d_joypads[i].confirmed) {
close_joypad(i);
}
}
}
void JoypadWindows::process_joypads() {
HRESULT hr;
for (int i = 0; i < XUSER_MAX_COUNT; i++) {
xinput_gamepad &joy = x_joypads[i];
if (!joy.attached) {
continue;
}
ZeroMemory(&joy.state, sizeof(XINPUT_STATE));
xinput_get_state(i, &joy.state);
if (joy.state.dwPacketNumber != joy.last_packet) {
int button_mask = XINPUT_GAMEPAD_DPAD_UP;
for (int j = 0; j <= 16; j++) {
input->joy_button(joy.id, (JoyButton)j, joy.state.Gamepad.wButtons & button_mask);
button_mask = button_mask * 2;
}
input->joy_axis(joy.id, JoyAxis::LEFT_X, axis_correct(joy.state.Gamepad.sThumbLX, true));
input->joy_axis(joy.id, JoyAxis::LEFT_Y, axis_correct(joy.state.Gamepad.sThumbLY, true, false, true));
input->joy_axis(joy.id, JoyAxis::RIGHT_X, axis_correct(joy.state.Gamepad.sThumbRX, true));
input->joy_axis(joy.id, JoyAxis::RIGHT_Y, axis_correct(joy.state.Gamepad.sThumbRY, true, false, true));
input->joy_axis(joy.id, JoyAxis::TRIGGER_LEFT, axis_correct(joy.state.Gamepad.bLeftTrigger, true, true));
input->joy_axis(joy.id, JoyAxis::TRIGGER_RIGHT, axis_correct(joy.state.Gamepad.bRightTrigger, true, true));
joy.last_packet = joy.state.dwPacketNumber;
}
uint64_t timestamp = input->get_joy_vibration_timestamp(joy.id);
if (timestamp > joy.ff_timestamp) {
Vector2 strength = input->get_joy_vibration_strength(joy.id);
float duration = input->get_joy_vibration_duration(joy.id);
if (strength.x == 0 && strength.y == 0) {
joypad_vibration_stop_xinput(i, timestamp);
} else {
joypad_vibration_start_xinput(i, strength.x, strength.y, duration, timestamp);
}
} else if (joy.vibrating && joy.ff_end_timestamp != 0) {
uint64_t current_time = OS::get_singleton()->get_ticks_usec();
if (current_time >= joy.ff_end_timestamp) {
joypad_vibration_stop_xinput(i, current_time);
}
}
}
for (int i = 0; i < JOYPADS_MAX; i++) {
dinput_gamepad *joy = &d_joypads[i];
if (!joy->attached) {
continue;
}
DIJOYSTATE2 js;
hr = joy->di_joy->Poll();
if (hr == DIERR_INPUTLOST || hr == DIERR_NOTACQUIRED) {
IDirectInputDevice8_Acquire(joy->di_joy);
joy->di_joy->Poll();
}
hr = joy->di_joy->GetDeviceState(sizeof(DIJOYSTATE2), &js);
if (FAILED(hr)) {
continue;
}
post_hat(joy->id, js.rgdwPOV[0]);
for (int j = 0; j < 128; j++) {
if (js.rgbButtons[j] & 0x80) {
if (!joy->last_buttons[j]) {
input->joy_button(joy->id, (JoyButton)j, true);
joy->last_buttons[j] = true;
}
} else {
if (joy->last_buttons[j]) {
input->joy_button(joy->id, (JoyButton)j, false);
joy->last_buttons[j] = false;
}
}
}
// on mingw, these constants are not constants
int count = 8;
const LONG axes[] = { DIJOFS_X, DIJOFS_Y, DIJOFS_Z, DIJOFS_RX, DIJOFS_RY, DIJOFS_RZ, (LONG)DIJOFS_SLIDER(0), (LONG)DIJOFS_SLIDER(1) };
int values[] = { js.lX, js.lY, js.lZ, js.lRx, js.lRy, js.lRz, js.rglSlider[0], js.rglSlider[1] };
for (int j = 0; j < joy->joy_axis.size(); j++) {
for (int k = 0; k < count; k++) {
if (joy->joy_axis[j] == axes[k]) {
input->joy_axis(joy->id, (JoyAxis)j, axis_correct(values[k]));
break;
}
}
}
}
return;
}
void JoypadWindows::post_hat(int p_device, DWORD p_dpad) {
BitField<HatMask> dpad_val;
// Should be -1 when centered, but according to docs:
// "Some drivers report the centered position of the POV indicator as 65,535. Determine whether the indicator is centered as follows:
// BOOL POVCentered = (LOWORD(dwPOV) == 0xFFFF);"
// https://docs.microsoft.com/en-us/previous-versions/windows/desktop/ee416628(v%3Dvs.85)#remarks
if (LOWORD(p_dpad) == 0xFFFF) {
// Do nothing.
// dpad_val.set_flag(HatMask::CENTER);
}
if (p_dpad == 0) {
dpad_val.set_flag(HatMask::UP);
} else if (p_dpad == 4500) {
dpad_val.set_flag(HatMask::UP);
dpad_val.set_flag(HatMask::RIGHT);
} else if (p_dpad == 9000) {
dpad_val.set_flag(HatMask::RIGHT);
} else if (p_dpad == 13500) {
dpad_val.set_flag(HatMask::RIGHT);
dpad_val.set_flag(HatMask::DOWN);
} else if (p_dpad == 18000) {
dpad_val.set_flag(HatMask::DOWN);
} else if (p_dpad == 22500) {
dpad_val.set_flag(HatMask::DOWN);
dpad_val.set_flag(HatMask::LEFT);
} else if (p_dpad == 27000) {
dpad_val.set_flag(HatMask::LEFT);
} else if (p_dpad == 31500) {
dpad_val.set_flag(HatMask::LEFT);
dpad_val.set_flag(HatMask::UP);
}
input->joy_hat(p_device, dpad_val);
}
float JoypadWindows::axis_correct(int p_val, bool p_xinput, bool p_trigger, bool p_negate) const {
if (Math::abs(p_val) < MIN_JOY_AXIS) {
return p_trigger ? -1.0f : 0.0f;
}
if (!p_xinput) {
return (float)p_val / MAX_JOY_AXIS;
}
if (p_trigger) {
// Convert to a value between -1.0f and 1.0f.
return 2.0f * p_val / MAX_TRIGGER - 1.0f;
}
float value;
if (p_val < 0) {
value = (float)p_val / MAX_JOY_AXIS;
} else {
value = (float)p_val / (MAX_JOY_AXIS - 1);
}
if (p_negate) {
value = -value;
}
return value;
}
void JoypadWindows::joypad_vibration_start_xinput(int p_device, float p_weak_magnitude, float p_strong_magnitude, float p_duration, uint64_t p_timestamp) {
xinput_gamepad &joy = x_joypads[p_device];
if (joy.attached) {
XINPUT_VIBRATION effect;
effect.wLeftMotorSpeed = (65535 * p_strong_magnitude);
effect.wRightMotorSpeed = (65535 * p_weak_magnitude);
if (xinput_set_state(p_device, &effect) == ERROR_SUCCESS) {
joy.ff_timestamp = p_timestamp;
joy.ff_end_timestamp = p_duration == 0 ? 0 : p_timestamp + (uint64_t)(p_duration * 1000000.0);
joy.vibrating = true;
}
}
}
void JoypadWindows::joypad_vibration_stop_xinput(int p_device, uint64_t p_timestamp) {
xinput_gamepad &joy = x_joypads[p_device];
if (joy.attached) {
XINPUT_VIBRATION effect;
effect.wLeftMotorSpeed = 0;
effect.wRightMotorSpeed = 0;
if (xinput_set_state(p_device, &effect) == ERROR_SUCCESS) {
joy.ff_timestamp = p_timestamp;
joy.vibrating = false;
}
}
}
void JoypadWindows::load_xinput() {
xinput_get_state = &_xinput_get_state;
xinput_set_state = &_xinput_set_state;
bool legacy_xinput = false;
xinput_dll = LoadLibrary("XInput1_4.dll");
if (!xinput_dll) {
xinput_dll = LoadLibrary("XInput1_3.dll");
if (!xinput_dll) {
xinput_dll = LoadLibrary("XInput9_1_0.dll");
legacy_xinput = true;
}
}
if (!xinput_dll) {
print_verbose("Could not find XInput, using DirectInput only");
return;
}
// (LPCSTR)100 is the magic number to get XInputGetStateEx, which also provides the state for the guide button
LPCSTR get_state_func_name = legacy_xinput ? "XInputGetState" : (LPCSTR)100;
XInputGetState_t func = (XInputGetState_t)GetProcAddress((HMODULE)xinput_dll, get_state_func_name);
XInputSetState_t set_func = (XInputSetState_t)GetProcAddress((HMODULE)xinput_dll, "XInputSetState");
if (!func || !set_func) {
unload_xinput();
return;
}
xinput_get_state = func;
xinput_set_state = set_func;
}
void JoypadWindows::unload_xinput() {
if (xinput_dll) {
FreeLibrary((HMODULE)xinput_dll);
}
}
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