make desktop hand movement configurable

Source/RWTHVRToolkit/Private/Pawn/VirtualRealityPawn.cpp

@@ -93,9 +93,17 @@ void AVirtualRealityPawn::UpdateRightHandForDesktopInteraction()
 		FVector MouseLocation, MouseDirection;
 		PC->DeprojectMousePositionToWorld(MouseLocation, MouseDirection);
 		FRotator HandOrientation = MouseDirection.ToOrientationRotator();
+		if(bMoveRightHandWithMouse)
+		{
 			RightHand->SetWorldRotation(HandOrientation);
 			RightHand->SetRelativeLocation(HeadCameraComponent->GetRelativeLocation());
 		}
+		if (bMoveLeftHandWithMouse)
+		{
+			LeftHand->SetWorldRotation(HandOrientation);
+			LeftHand->SetRelativeLocation(HeadCameraComponent->GetRelativeLocation());
+		}
+	}
 }
 
 void AVirtualRealityPawn::SetCameraOffset() const

Source/RWTHVRToolkit/Public/Pawn/VirtualRealityPawn.h

@@ -41,6 +41,12 @@ public:
 	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Pawn|Camera")
 	UCameraComponent* HeadCameraComponent;
 
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Pawn|Desktop Movement")
+	bool bMoveRightHandWithMouse = true;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Pawn|Desktop Movement")
+	bool bMoveLeftHandWithMouse = false;
+
 
 protected:
 	virtual void SetupPlayerInputComponent(UInputComponent* PlayerInputComponent) override;