Creating C++ Base ClassΒΆ

  1. In Contents -> Blueprint. rename Grabber to BP_Grabber and do the same with CuttableTree

  2. Check the parent of BP_Grabber by either checking Class Settings or looking at the top right and we should see that the parent is Scene Component

../../_images/bp_class_settings.PNG ../../_images/parent_is_scene_component.PNG

3. Ensure Windows SDK is installed: https://developer.microsoft.com/en-us/windows/downloads/windows-10-sdk/

  1. Right click and create new C++ class and choose Scene Component and name it Grabber. Click on Public

../../_images/new_cpp_class.PNG

  1. Change the code BlueprintsToCppSourceBlueprintsToCppPublicGrabber.h

UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) )
class BLUEPRINTSTOCPP_API UGrabber : public USceneComponent

Add Blueprintable:

UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent), Blueprintable )

  1. Ctrl-Shift-B to build the project and we should see it in the Content Browser. (In some versions of UE4 it may require rebooting)

../../_images/grabber_cpp_in_content_browser.PNG

  1. In the BP_Grabber BluePrint, go to Class Settings and change Parent Class to Grabber

../../_images/set_grabber_cpp_as_parent.PNG

  1. Do the same thing with BP_QuestManager. Check that parent is Actor so create an Actor C++ Class named QuestManager. Note that this time we do not need to add Blueprintable because Actor is already Blueprintable. Now make parent of BP_QuestManager to be QuestManager