SteamVR UE4 Motion Controller Mappings

DefaultInput.ini

+ActionMappings=(ActionName="MenuButtonLeft",Key=MotionController_Left_Shoulder,bShift=False,bCtrl=False,bAlt=False,bCmd=False)
+ActionMappings=(ActionName="LeftTouchpadPress",Key=MotionController_Left_Thumbstick,bShift=False,bCtrl=False,bAlt=False,bCmd=False)
+ActionMappings=(ActionName="LeftTouchpadTouch",Key=Steam_Touch_0,bShift=False,bCtrl=False,bAlt=False,bCmd=False)
+ActionMappings=(ActionName="LeftGrip",Key=MotionController_Left_Grip1,bShift=False,bCtrl=False,bAlt=False,bCmd=False)
+ActionMappings=(ActionName="LeftTrigger",Key=MotionController_Left_Trigger,bShift=False,bCtrl=False,bAlt=False,bCmd=False)
+ActionMappings=(ActionName="MenuButtonRight",Key=MotionController_Right_Shoulder,bShift=False,bCtrl=False,bAlt=False,bCmd=False)
+ActionMappings=(ActionName="RightTouchpadPress",Key=MotionController_Right_Thumbstick,bShift=False,bCtrl=False,bAlt=False,bCmd=False)
+ActionMappings=(ActionName="RightTouchpadTouch",Key=Steam_Touch_1,bShift=False,bCtrl=False,bAlt=False,bCmd=False)
+ActionMappings=(ActionName="RightGrip",Key=MotionController_Right_Grip1,bShift=False,bCtrl=False,bAlt=False,bCmd=False)
+ActionMappings=(ActionName="RightTrigger",Key=MotionController_Right_Trigger,bShift=False,bCtrl=False,bAlt=False,bCmd=False)
+AxisMappings=(AxisName="LeftTriggerAnalog",Key=MotionController_Left_TriggerAxis,Scale=1.000000)
+AxisMappings=(AxisName="LeftTouchpadX",Key=MotionController_Left_Thumbstick_X,Scale=1.000000)
+AxisMappings=(AxisName="LeftTouchpadY",Key=MotionController_Left_Thumbstick_Y,Scale=1.000000)
+AxisMappings=(AxisName="RightTriggerAnalog",Key=MotionController_Right_TriggerAxis,Scale=1.000000)
+AxisMappings=(AxisName="RightTouchpadX",Key=MotionController_Right_Thumbstick_X,Scale=1.000000)
+AxisMappings=(AxisName="RightTouchpadY",Key=MotionController_Right_Thumbstick_Y,Scale=1.000000)

Sample.cpp

// Sample CPP player input component binding
void AMyClass::SetupPlayerInputComponent(class UInputComponent* InputComponent)
{
	Super::SetupPlayerInputComponent(InputComponent);

	// Left hand
	InputComponent->BindAction("MenuButtonLeft", EInputEvent::IE_Pressed, this, &AMyClass::MotionControlLeftMenu);
	InputComponent->BindAction("LeftTouchpadPress", EInputEvent::IE_Pressed, this, &AMyClass::MotionControlLeftTouchPressed);
	InputComponent->BindAction("LeftTouchpadTouch", EInputEvent::IE_Pressed, this, &AMyClass::MotionControlLeftTouchTouched);
	InputComponent->BindAction("LeftGrip", EInputEvent::IE_Pressed, this, &AMyClass::MotionControlLeftGrip);
	InputComponent->BindAction("LeftTrigger", EInputEvent::IE_Pressed, this, &AMyClass::MotionControlLeftTrigger);
	
	// Value ranges from [0, 1] Unpressed to fully pressed
	InputComponent->BindAxis("LeftTriggerAnalog", this, &AMyClass::MotionControlAxisUpdateLeft);
	
	// Coordinate space is [-1, 1] Left to Right
	InputComponent->BindAxis("LeftTouchpadX", this, &AMyClass::MotionControlTouchpadUpdateLeftX);
	
	// Coordinate space is [-1, 1] Top to Bottom
	InputComponent->BindAxis("LeftTouchpadY", this, &AMyClass::MotionControlTouchpadUpdateLeftY);

	// Right hand
	InputComponent->BindAction("MenuButtonRight", EInputEvent::IE_Pressed, this, &AMyClass::MotionControlRightMenu);
	InputComponent->BindAction("RightTouchpadPress", EInputEvent::IE_Pressed, this, &AMyClass::MotionControlRightTouchPressed);
	InputComponent->BindAction("RightTouchpadTouch", EInputEvent::IE_Pressed, this, &AMyClass::MotionControlRightTouchTouched);
	InputComponent->BindAction("RightGrip", EInputEvent::IE_Pressed, this, &AMyClass::MotionControlRightGrip);
	InputComponent->BindAction("RightTrigger", EInputEvent::IE_Pressed, this, &AMyClass::MotionControlRightTrigger);
	InputComponent->BindAxis("RightTriggerAnalog", this, &AMyClass::MotionControlAxisUpdateRight);
	InputComponent->BindAxis("RightTouchpadX", this, &AMyClass::MotionControlTouchpadUpdateRightX);
	InputComponent->BindAxis("RightTouchpadY", this, &AMyClass::MotionControlTouchpadUpdateRightY);
}

// Define all your .h functions below to do the actual stuff
// i.e.
void AMyClass::MotionControlLeftMenu()
{
  // ...
}

Sample.h

// Sample function headers that you will bind calls to
UFUNCTION()
virtual void MotionControlLeftMenu();

UFUNCTION()
virtual void MotionControlLeftTouchPressed();

UFUNCTION()
virtual void MotionControlLeftTouchTouched();

UFUNCTION()
virtual void MotionControlLeftGrip();

UFUNCTION()
virtual void MotionControlLeftTrigger();

UFUNCTION()
virtual void MotionControlAxisUpdateLeft(float value);

UFUNCTION()
virtual void MotionControlTouchpadUpdateLeftX(float value);

UFUNCTION()
virtual void MotionControlTouchpadUpdateLeftY(float value);

UFUNCTION()
virtual void MotionControlRightMenu();

UFUNCTION()
virtual void MotionControlRightTouchPressed();

UFUNCTION()
virtual void MotionControlRightTouchTouched();

UFUNCTION()
virtual void MotionControlRightGrip();

UFUNCTION()
virtual void MotionControlRightTrigger();

UFUNCTION()
virtual void MotionControlAxisUpdateRight(float value);

UFUNCTION()
virtual void MotionControlTouchpadUpdateRightX(float value);

UFUNCTION()
virtual void MotionControlTouchpadUpdateRightY(float value);