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#pragma once
auto CALLBACK DirectInput_EnumJoypadsCallback(const DIDEVICEINSTANCE* instance, void* p) -> BOOL;
auto CALLBACK DirectInput_EnumJoypadAxesCallback(const DIDEVICEOBJECTINSTANCE* instance, void* p) -> BOOL;
auto CALLBACK DirectInput_EnumJoypadEffectsCallback(const DIDEVICEOBJECTINSTANCE* instance, void* p) -> BOOL;
struct InputJoypadDirectInput {
Input& input;
InputJoypadDirectInput(Input& input) : input(input) {}
struct Joypad {
shared_pointer<HID::Joypad> hid{new HID::Joypad};
LPDIRECTINPUTDEVICE8 device = nullptr;
LPDIRECTINPUTEFFECT effect = nullptr;
u32 pathID = 0;
u16 vendorID = 0;
u16 productID = 0;
bool isXInputDevice = false;
};
vector<Joypad> joypads;
uintptr handle = 0;
LPDIRECTINPUT8 context = nullptr;
LPDIRECTINPUTDEVICE8 device = nullptr;
bool xinputAvailable = false;
u32 effects = 0;
auto assign(shared_pointer<HID::Joypad> hid, u32 groupID, u32 inputID, s16 value) -> void {
auto& group = hid->group(groupID);
if(group.input(inputID).value() == value) return;
input.doChange(hid, groupID, inputID, group.input(inputID).value(), value);
group.input(inputID).setValue(value);
}
auto poll(vector<shared_pointer<HID::Device>>& devices) -> void {
for(auto& jp : joypads) {
if(FAILED(jp.device->Poll())) jp.device->Acquire();
DIJOYSTATE2 state;
if(FAILED(jp.device->GetDeviceState(sizeof(DIJOYSTATE2), &state))) continue;
for(u32 n : range(4)) {
assign(jp.hid, HID::Joypad::GroupID::Axis, 0, state.lX);
assign(jp.hid, HID::Joypad::GroupID::Axis, 1, state.lY);
assign(jp.hid, HID::Joypad::GroupID::Axis, 2, state.lZ);
assign(jp.hid, HID::Joypad::GroupID::Axis, 3, state.lRx);
assign(jp.hid, HID::Joypad::GroupID::Axis, 4, state.lRy);
assign(jp.hid, HID::Joypad::GroupID::Axis, 5, state.lRz);
u32 pov = state.rgdwPOV[n];
s16 xaxis = 0;
s16 yaxis = 0;
if(pov < 36000) {
if(pov >= 31500 || pov <= 4500) yaxis = -32767;
if(pov >= 4500 && pov <= 13500) xaxis = +32767;
if(pov >= 13500 && pov <= 22500) yaxis = +32767;
if(pov >= 22500 && pov <= 31500) xaxis = -32767;
}
assign(jp.hid, HID::Joypad::GroupID::Hat, n * 2 + 0, xaxis);
assign(jp.hid, HID::Joypad::GroupID::Hat, n * 2 + 1, yaxis);
}
for(u32 n : range(128)) {
assign(jp.hid, HID::Joypad::GroupID::Button, n, (bool)state.rgbButtons[n]);
}
devices.append(jp.hid);
}
}
auto rumble(u64 id, bool enable) -> bool {
for(auto& jp : joypads) {
if(jp.hid->id() != id) continue;
if(jp.effect == nullptr) continue;
if(enable) jp.effect->Start(1, 0);
else jp.effect->Stop();
return true;
}
return false;
}
auto initialize(uintptr handle, LPDIRECTINPUT8 context, bool xinputAvailable) -> bool {
if(!handle) return false;
this->handle = handle;
this->context = context;
this->xinputAvailable = xinputAvailable;
context->EnumDevices(DI8DEVCLASS_GAMECTRL, DirectInput_EnumJoypadsCallback, (void*)this, DIEDFL_ATTACHEDONLY);
return true;
}
auto terminate() -> void {
for(auto& jp : joypads) {
jp.device->Unacquire();
if(jp.effect) jp.effect->Release();
jp.device->Release();
}
joypads.reset();
context = nullptr;
}
auto initJoypad(const DIDEVICEINSTANCE* instance) -> bool {
Joypad jp;
jp.vendorID = instance->guidProduct.Data1 >> 0;
jp.productID = instance->guidProduct.Data1 >> 16;
jp.isXInputDevice = false;
if(auto device = rawinput.find(jp.vendorID, jp.productID)) {
jp.isXInputDevice = device().isXInputDevice;
}
//Microsoft has intentionally imposed artificial restrictions on XInput devices when used with DirectInput
//a) the two triggers are merged into a single axis, making uniquely distinguishing them impossible
//b) rumble support is not exposed
//thus, it's always preferred to let the XInput driver handle these joypads
//but if the driver is not available (XInput 1.3 does not ship with stock Windows XP), fall back on DirectInput
if(jp.isXInputDevice && xinputAvailable) return DIENUM_CONTINUE;
if(FAILED(context->CreateDevice(instance->guidInstance, &device, 0))) return DIENUM_CONTINUE;
jp.device = device;
device->SetDataFormat(&c_dfDIJoystick2);
device->SetCooperativeLevel((HWND)handle, DISCL_NONEXCLUSIVE | DISCL_BACKGROUND);
effects = 0;
device->EnumObjects(DirectInput_EnumJoypadAxesCallback, (void*)this, DIDFT_ABSAXIS);
device->EnumObjects(DirectInput_EnumJoypadEffectsCallback, (void*)this, DIDFT_FFACTUATOR);
jp.hid->setRumble(effects > 0);
DIPROPGUIDANDPATH property;
memset(&property, 0, sizeof(DIPROPGUIDANDPATH));
property.diph.dwSize = sizeof(DIPROPGUIDANDPATH);
property.diph.dwHeaderSize = sizeof(DIPROPHEADER);
property.diph.dwObj = 0;
property.diph.dwHow = DIPH_DEVICE;
device->GetProperty(DIPROP_GUIDANDPATH, &property.diph);
string devicePath = (const char*)utf8_t(property.wszPath);
jp.pathID = Hash::CRC32(devicePath).value();
jp.hid->setVendorID(jp.vendorID);
jp.hid->setProductID(jp.productID);
jp.hid->setPathID(jp.pathID);
if(jp.hid->rumble()) {
//disable auto-centering spring for rumble support
DIPROPDWORD property;
memset(&property, 0, sizeof(DIPROPDWORD));
property.diph.dwSize = sizeof(DIPROPDWORD);
property.diph.dwHeaderSize = sizeof(DIPROPHEADER);
property.diph.dwObj = 0;
property.diph.dwHow = DIPH_DEVICE;
property.dwData = false;
device->SetProperty(DIPROP_AUTOCENTER, &property.diph);
DWORD dwAxes[2] = {(DWORD)DIJOFS_X, (DWORD)DIJOFS_Y};
LONG lDirection[2] = {0, 0};
DICONSTANTFORCE force;
force.lMagnitude = DI_FFNOMINALMAX; //full force
DIEFFECT effect;
memset(&effect, 0, sizeof(DIEFFECT));
effect.dwSize = sizeof(DIEFFECT);
effect.dwFlags = DIEFF_CARTESIAN | DIEFF_OBJECTOFFSETS;
effect.dwDuration = INFINITE;
effect.dwSamplePeriod = 0;
effect.dwGain = DI_FFNOMINALMAX;
effect.dwTriggerButton = DIEB_NOTRIGGER;
effect.dwTriggerRepeatInterval = 0;
effect.cAxes = 2;
effect.rgdwAxes = dwAxes;
effect.rglDirection = lDirection;
effect.lpEnvelope = 0;
effect.cbTypeSpecificParams = sizeof(DICONSTANTFORCE);
effect.lpvTypeSpecificParams = &force;
effect.dwStartDelay = 0;
device->CreateEffect(GUID_ConstantForce, &effect, &jp.effect, NULL);
}
for(auto n : range(6)) jp.hid->axes().append(n);
for(auto n : range(8)) jp.hid->hats().append(n);
for(auto n : range(128)) jp.hid->buttons().append(n);
joypads.append(jp);
return DIENUM_CONTINUE;
}
auto initAxis(const DIDEVICEOBJECTINSTANCE* instance) -> bool {
DIPROPRANGE range;
memset(&range, 0, sizeof(DIPROPRANGE));
range.diph.dwSize = sizeof(DIPROPRANGE);
range.diph.dwHeaderSize = sizeof(DIPROPHEADER);
range.diph.dwHow = DIPH_BYID;
range.diph.dwObj = instance->dwType;
range.lMin = -32768;
range.lMax = +32767;
device->SetProperty(DIPROP_RANGE, &range.diph);
return DIENUM_CONTINUE;
}
auto initEffect(const DIDEVICEOBJECTINSTANCE* instance) -> bool {
effects++;
return DIENUM_CONTINUE;
}
};
auto CALLBACK DirectInput_EnumJoypadsCallback(const DIDEVICEINSTANCE* instance, void* p) -> BOOL {
return ((InputJoypadDirectInput*)p)->initJoypad(instance);
}
auto CALLBACK DirectInput_EnumJoypadAxesCallback(const DIDEVICEOBJECTINSTANCE* instance, void* p) -> BOOL {
return ((InputJoypadDirectInput*)p)->initAxis(instance);
}
auto CALLBACK DirectInput_EnumJoypadEffectsCallback(const DIDEVICEOBJECTINSTANCE* instance, void* p) -> BOOL {
return ((InputJoypadDirectInput*)p)->initEffect(instance);
}
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