// Callback that lists all gamepads.
static BOOL CALLBACK gamepadCallback(LPCDIDEVICEINSTANCE device,
LPVOID userData)
{
Impl* pimpl = static_cast<Impl*>(userData);
IDirectInputDevice8* gamepad;
if (FAILED(pimpl->input->CreateDevice(device->guidInstance,
&gamepad, 0)))
{
return DIENUM_CONTINUE;
}
if (FAILED(gamepad->SetDataFormat(&c_dfDIJoystick)) ||
FAILED(gamepad->SetCooperativeLevel(pimpl->window,
DISCL_EXCLUSIVE | DISCL_FOREGROUND)) ||
FAILED(gamepad->EnumObjects(axisCallback, gamepad, DIDFT_AXIS)))
{
gamepad->Release();
return DIENUM_CONTINUE;
}
pimpl->gamepads.push_back(Win::shareComPtr(gamepad));
return DIENUM_CONTINUE;
}
Gosu::Input::Input(HWND window)
: pimpl(new Impl)
{
pimpl->window = window;
pimpl->mouseFactorX = pimpl->mouseFactorY = 1.0;
// Create the main input object (only necessary for setup).
IDirectInput8* inputRaw;
Impl::check("creating the main DirectInput object",
::DirectInput8Create(Win::instance(), DIRECTINPUT_VERSION,
IID_IDirectInput8, reinterpret_cast<void**>(&inputRaw), 0));
pimpl->input = Win::shareComPtr(inputRaw);
// Prepare property struct for setting the amount of data to buffer.
DIPROPDWORD bufferSize;
bufferSize.diph.dwSize = sizeof(DIPROPDWORD);
bufferSize.diph.dwHeaderSize = sizeof(DIPROPHEADER);
bufferSize.diph.dwHow = DIPH_DEVICE;
bufferSize.diph.dwObj = 0;
bufferSize.dwData = Impl::inputBufferSize;
// Set up the system keyboard.
IDirectInputDevice8* kbRaw;
Impl::check("creating the keyboard device object",
pimpl->input->CreateDevice(GUID_SysKeyboard, &kbRaw, 0));
pimpl->keyboard = Win::shareComPtr(kbRaw);
Impl::check("setting the keyboard's data format",
kbRaw->SetDataFormat(&c_dfDIKeyboard));
Impl::check("setting the keyboard's cooperative level",
kbRaw->SetCooperativeLevel(window,
DISCL_FOREGROUND | DISCL_NONEXCLUSIVE));
Impl::check("setting the keyboard's buffer size",
kbRaw->SetProperty(DIPROP_BUFFERSIZE, &bufferSize.diph));
kbRaw->Acquire();
// Set up the system mouse.
IDirectInputDevice8* mouseRaw;
Impl::check("creating the mouse device object",
pimpl->input->CreateDevice(GUID_SysMouse, &mouseRaw, 0));
pimpl->mouse = Win::shareComPtr(mouseRaw);
Impl::check("setting the mouse's data format",
mouseRaw->SetDataFormat(&c_dfDIMouse));
Impl::check("setting the mouse's cooperative level",
mouseRaw->SetCooperativeLevel(window,
DISCL_FOREGROUND | DISCL_NONEXCLUSIVE));
Impl::check("setting the mouse's buffer size",
mouseRaw->SetProperty(DIPROP_BUFFERSIZE, &bufferSize.diph));
mouseRaw->Acquire();
pimpl->swapMouse = ::GetSystemMetrics(SM_SWAPBUTTON) != 0;
// Set up all gamepads.
pimpl->input->EnumDevices(DI8DEVCLASS_GAMECTRL, Impl::gamepadCallback,
pimpl.get(), DIEDFL_ATTACHEDONLY);
// Get into a usable default state.
pimpl->mouseX = pimpl->mouseY = 0;
pimpl->updateMousePos();
buttons.assign(false);
}
HRESULT _stdcall SetDataFormat(const DIDATAFORMAT* a) { return RealDevice->SetDataFormat(a); }