Help with BP Interface Event

Development Programming & Scripting
4

We could describe an interface as “a promise of some functionality”. So, if your class BP_ThirdPersonCharacter declares itself to be using the BPI_Initiative interface, it “promises” it will implement the functions that interface declares, which is just the Initiate function in your case.

From the video it seems like your BP_ThirdPersonCharacter calls Initiate on itself, so, what will happen is its own Initiate implementation will run, and that implementation (based on the video) doesn’t exist, so nothing will happen.

Here are some more guesses what might’ve went wrong between the idea and the execution:

  • Is BP_ThirdPersonCharacter missing an implementation for the Initiate function? If not, it’s not supposed to have the Initiative interface either, because that’s what the interface is for.
  • If you planned to call Initiate on some other character (of type BP_Character), you need to pass it as the parameter to Initiate (see image), because otherwise it defaults to the current blueprint (see Target = self).
    image