ObjFW  Diff

 *
 *   Microsoft X-Box 360 pad [045E:028E]
 *   Joy-Con (L) [057E:2006]
 *   Joy-Con (R) [057E:2007]
 *   N64 Controller [057E:2019]
 *   Sony Interactive Entertainment DualSense Wireless Controller [054C:0CE6]
 *   8BitDo Pro 2 Wired Controller [2DC8:3106]
 *   Stadia2SZY-0d6c [18D1:9400]
 */

static const uint16_t vendorIDMicrosoft = 0x045E;
static const uint16_t vendorIDNintendo = 0x057E;
static const uint16_t vendorIDSony = 0x054C;
static const uint16_t vendorIDGoogle = 0x18D1;

/* Microsoft controllers */
static const uint16_t productIDXbox360 = 0x028E;

/* Nintendo controllers */
static const uint16_t productIDLeftJoycon = 0x2006;
static const uint16_t productIDRightJoycon = 0x2007;
static const uint16_t productIDN64Controller = 0x2019;

/* Sony controllers */
static const uint16_t productIDDualSense = 0x0CE6;

/* Google controllers */
static const uint16_t productIDStadia = 0x9400;

@interface OFGameController ()
- (instancetype)of_initWithPath: (OFString *)path OF_METHOD_FAMILY(init);
@end

static const uint16_t buttons[] = {
	BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_TL2,
	BTN_TR2, BTN_SELECT, BTN_START, BTN_MODE, BTN_THUMBL, BTN_THUMBR,
	BTN_DPAD_UP, BTN_DPAD_DOWN, BTN_DPAD_LEFT, BTN_DPAD_RIGHT,
	BTN_TRIGGER_HAPPY1, BTN_TRIGGER_HAPPY2
};

static OFGameControllerButton
buttonToName(uint16_t button, uint16_t vendorID, uint16_t productID)
{
	if (vendorID == vendorIDNintendo &&
	    productID == productIDLeftJoycon) {

	} else if (vendorID == vendorIDSony &&
	    productID == productIDDualSense) {
		switch (button) {
		case BTN_NORTH:
			return OFGameControllerNorthButton;
		case BTN_WEST:
			return OFGameControllerWestButton;
		}
	} else if (vendorID == vendorIDGoogle && productID == productIDStadia) {
		switch (button) {
		case BTN_TRIGGER_HAPPY1:
			return OFGameControllerAssistantButton;
		case BTN_TRIGGER_HAPPY2:
			return OFGameControllerCaptureButton;
		}
	}

	switch (button) {
	case BTN_Y:
		return OFGameControllerNorthButton;
	case BTN_A:

			@throw [OFInitializationFailedException exception];

		_name = [[OFString alloc] initWithCString: name
						 encoding: encoding];

		_buttons = [[OFMutableSet alloc] init];
		for (size_t i = 0; i < sizeof(buttons) / sizeof(*buttons);
		    i++) {
			if (OFBitSetIsSet(keyBits, buttons[i])) {
				OFGameControllerButton button = buttonToName(
				    buttons[i], _vendorID, _productID);

				if (button != nil)
					[_buttons addObject: button];
			}
		}

		_pressedButtons = [[OFMutableSet alloc] init];

		if (OFBitSetIsSet(evBits, EV_ABS)) {
			if (ioctl(_fd, EVIOCGBIT(EV_ABS, sizeof(absBits)),
			    absBits) == -1)
				@throw [OFInitializationFailedException
				    exception];

			if (_vendorID == vendorIDGoogle &&
			    _productID == productIDStadia) {
				/*
				 * It's unclear how this can be screwed up
				 * *this* bad.
				 */
				_rightAnalogStickXBit = ABS_Z;
				_rightAnalogStickYBit = ABS_RZ;
				_leftTriggerPressureBit = ABS_BRAKE;
				_rightTriggerPressureBit = ABS_GAS;
			} else {
				_rightAnalogStickXBit = ABS_RX;
				_rightAnalogStickYBit = ABS_RY;
				_leftTriggerPressureBit = ABS_Z;
				_rightTriggerPressureBit = ABS_RZ;
			}

			if (OFBitSetIsSet(absBits, ABS_X) &&
			    OFBitSetIsSet(absBits, ABS_Y)) {
				struct input_absinfo infoX, infoY;

				_hasLeftAnalogStick = true;

				_leftAnalogStickMinX = infoX.minimum;
				_leftAnalogStickMaxX = infoX.maximum;
				_leftAnalogStickMinY = infoY.minimum;
				_leftAnalogStickMaxY = infoY.maximum;
			}

			if (OFBitSetIsSet(absBits, _rightAnalogStickXBit) &&
			    OFBitSetIsSet(absBits, _rightAnalogStickYBit)) {
				struct input_absinfo infoX, infoY;

				_hasRightAnalogStick = true;

				if (ioctl(_fd, EVIOCGABS(_rightAnalogStickXBit),
				    &infoX) == -1)
					@throw [OFInitializationFailedException
					    exception];

				if (ioctl(_fd, EVIOCGABS(_rightAnalogStickYBit),
				    &infoY) == -1)
					@throw [OFInitializationFailedException
					    exception];

				_rightAnalogStickMinX = infoX.minimum;
				_rightAnalogStickMaxX = infoX.maximum;
				_rightAnalogStickMinY = infoY.minimum;
				_rightAnalogStickMaxY = infoY.maximum;

				    OFGameControllerDPadRightButton];
				[_buttons addObject:
				    OFGameControllerDPadUpButton];
				[_buttons addObject:
				    OFGameControllerDPadDownButton];
			}

			if (OFBitSetIsSet(absBits, _leftTriggerPressureBit)) {
				struct input_absinfo info;

				_hasLeftTriggerPressure = true;

				if (ioctl(_fd, EVIOCGABS(
				    _leftTriggerPressureBit), &info) == -1)
					@throw [OFInitializationFailedException
					    exception];

				_leftTriggerMinPressure = info.minimum;
				_leftTriggerMaxPressure = info.maximum;

				[_buttons addObject:
				    OFGameControllerLeftTriggerButton];
			}

			if (OFBitSetIsSet(absBits, _rightTriggerPressureBit)) {
				struct input_absinfo info;

				_hasRightTriggerPressure = true;

				if (ioctl(_fd, EVIOCGABS(
				    _rightTriggerPressureBit), &info) == -1)
					@throw [OFInitializationFailedException
					    exception];

				_rightTriggerMinPressure = info.minimum;
				_rightTriggerMaxPressure = info.maximum;

				[_buttons addObject:

				if (event.value)
					[_pressedButtons addObject: button];
				else
					[_pressedButtons removeObject: button];
			}
			break;
		case EV_ABS:
			if (event.code == ABS_X)

				_leftAnalogStickPosition.x = scale(event.value,
				    _leftAnalogStickMinX, _leftAnalogStickMaxX);

			else if (event.code == ABS_Y)
				_leftAnalogStickPosition.y = scale(event.value,
				    _leftAnalogStickMinY, _leftAnalogStickMaxY);

			else if (event.code == _rightAnalogStickXBit)
				_rightAnalogStickPosition.x = scale(event.value,
				    _rightAnalogStickMinX,
				    _rightAnalogStickMaxX);

			else if (event.code == _rightAnalogStickYBit)
				_rightAnalogStickPosition.y = scale(event.value,
				    _rightAnalogStickMinY,
				    _rightAnalogStickMaxY);

			else if (event.code == ABS_HAT0X) {
				if (event.value < 0) {
					[_pressedButtons addObject:
					    OFGameControllerDPadLeftButton];
					[_pressedButtons removeObject:
					    OFGameControllerDPadRightButton];
				} else if (event.value > 0) {
					[_pressedButtons addObject:
					    OFGameControllerDPadRightButton];
					[_pressedButtons removeObject:
					    OFGameControllerDPadLeftButton];
				} else {
					[_pressedButtons removeObject:
					    OFGameControllerDPadLeftButton];
					[_pressedButtons removeObject:
					    OFGameControllerDPadRightButton];
				}

			} else if (event.code == ABS_HAT0Y) {
				if (event.value < 0) {
					[_pressedButtons addObject:
					    OFGameControllerDPadUpButton];
					[_pressedButtons removeObject:
					    OFGameControllerDPadDownButton];
				} else if (event.value > 0) {
					[_pressedButtons addObject:
					    OFGameControllerDPadDownButton];
					[_pressedButtons removeObject:
					    OFGameControllerDPadUpButton];
				} else {
					[_pressedButtons removeObject:
					    OFGameControllerDPadUpButton];
					[_pressedButtons removeObject:
					    OFGameControllerDPadDownButton];
				}

			} else if (event.code == _leftTriggerPressureBit) {
				_leftTriggerPressure = scale(event.value,
				    _leftTriggerMinPressure,
				    _leftTriggerMaxPressure);

				if (_leftTriggerPressure > 0)
					[_pressedButtons addObject:
					    OFGameControllerLeftTriggerButton];
				else
					[_pressedButtons removeObject:
					    OFGameControllerLeftTriggerButton];
			} else if (event.code == _rightTriggerPressureBit) {

				_rightTriggerPressure = scale(event.value,
				    _rightTriggerMinPressure,
				    _rightTriggerMaxPressure);

				if (_rightTriggerPressure > 0)
					[_pressedButtons addObject:
					    OFGameControllerRightTriggerButton];
				else
					[_pressedButtons removeObject:
					    OFGameControllerRightTriggerButton];

			}

			break;
		}
	}
}

- (OFComparisonResult)compare: (OFGameController *)otherController
{