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#ifndef RUBY_INPUT_JOYPAD_DIRECTINPUT
#define RUBY_INPUT_JOYPAD_DIRECTINPUT
namespace ruby {
BOOL CALLBACK DirectInput_EnumJoypadsCallback(const DIDEVICEINSTANCE* instance, void* p);
BOOL CALLBACK DirectInput_EnumJoypadAxesCallback(const DIDEVICEOBJECTINSTANCE* instance, void* p);
BOOL CALLBACK DirectInput_EnumJoypadEffectsCallback(const DIDEVICEOBJECTINSTANCE* instance, void* p);
struct InputJoypadDirectInput {
struct Joypad {
HID::Joypad hid;
LPDIRECTINPUTDEVICE8 device = nullptr;
LPDIRECTINPUTEFFECT effect = nullptr;
uint32_t pathID = 0;
uint16_t vendorID = 0;
uint16_t productID = 0;
bool isXInputDevice = false;
};
vector<Joypad> joypads;
uintptr_t handle = 0;
LPDIRECTINPUT8 context = nullptr;
LPDIRECTINPUTDEVICE8 device = nullptr;
bool xinputAvailable = false;
unsigned effects = 0;
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) {
if(FAILED(jp.device->Poll())) jp.device->Acquire();
DIJOYSTATE2 state;
if(FAILED(jp.device->GetDeviceState(sizeof(DIJOYSTATE2), &state))) continue;
for(unsigned n = 0; n < 4; n++) {
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);
unsigned pov = state.rgdwPOV[n];
int16_t xaxis = 0;
int16_t yaxis = 0;
if(pov < 36000) {
if(pov >= 31500 || pov <= 4500) yaxis = -32768;
if(pov >= 4500 && pov <= 13500) xaxis = +32767;
if(pov >= 13500 && pov <= 22500) yaxis = +32767;
if(pov >= 22500 && pov <= 31500) xaxis = -32768;
}
assign(jp.hid, HID::Joypad::GroupID::Hat, n * 2 + 0, xaxis);
assign(jp.hid, HID::Joypad::GroupID::Hat, n * 2 + 1, yaxis);
}
for(unsigned n = 0; n < 128; n++) {
assign(jp.hid, HID::Joypad::GroupID::Button, n, (bool)state.rgbButtons[n]);
}
devices.append(&jp.hid);
}
}
bool rumble(uint64_t id, bool enable) {
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;
}
bool init(uintptr_t handle, LPDIRECTINPUT8 context, bool xinputAvailable) {
this->handle = handle;
this->context = context;
this->xinputAvailable = xinputAvailable;
context->EnumDevices(DI8DEVCLASS_GAMECTRL, DirectInput_EnumJoypadsCallback, (void*)this, DIEDFL_ATTACHEDONLY);
return true;
}
void term() {
for(auto& jp : joypads) {
jp.device->Unacquire();
if(jp.effect) jp.effect->Release();
jp.device->Release();
}
joypads.reset();
context = nullptr;
}
bool initJoypad(const DIDEVICEINSTANCE* instance) {
Joypad jp;
jp.vendorID = instance->guidProduct.Data1 >> 0;
jp.productID = instance->guidProduct.Data1 >> 16;
if(auto device = rawinput.find(jp.vendorID, jp.productID)) {
jp.pathID = crc32_calculate((const uint8_t*)device().path.data(), device().path.size());
jp.hid.id = (uint64_t)jp.pathID << 32 | jp.vendorID << 16 | jp.productID << 0;
jp.isXInputDevice = device().isXInputDevice;
} else {
//this should never occur
return DIENUM_CONTINUE;
}
//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.rumble = effects > 0;
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] = {DIJOFS_X, 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(unsigned n = 0; n < 6; n++) jp.hid.axis().append({n});
for(unsigned n = 0; n < 8; n++) jp.hid.hat().append({n});
for(unsigned n = 0; n < 128; n++) jp.hid.button().append({n});
joypads.append(jp);
return DIENUM_CONTINUE;
}
bool initAxis(const DIDEVICEOBJECTINSTANCE* instance) {
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;
}
bool initEffect(const DIDEVICEOBJECTINSTANCE* instance) {
effects++;
return DIENUM_CONTINUE;
}
};
BOOL CALLBACK DirectInput_EnumJoypadsCallback(const DIDEVICEINSTANCE* instance, void* p) {
return ((InputJoypadDirectInput*)p)->initJoypad(instance);
}
BOOL CALLBACK DirectInput_EnumJoypadAxesCallback(const DIDEVICEOBJECTINSTANCE* instance, void* p) {
return ((InputJoypadDirectInput*)p)->initAxis(instance);
}
BOOL CALLBACK DirectInput_EnumJoypadEffectsCallback(const DIDEVICEOBJECTINSTANCE* instance, void* p) {
return ((InputJoypadDirectInput*)p)->initEffect(instance);
}
}
#endif
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