Victor's Behaviour tree basic zombie(C++/Blueprints) [TUTORIALl]

[=;42630]
The code given is not meant to use as direct copypaste, its meant to be an example, and thats why i havent added the #include “creatureAI.generated.h” at the top.
[/]

“In tutorial, im going to show, step by step”

I assumed it was a completed tutorial sry. At point the tutorial has me confused as how to even compile the new code into the project :S
I am searching for an answer but find no explenation so far. If I try to add the code from UE4 editor menu “add new code to project”, there is no way of telling what class type is correct D: