Unreal Engine 4.x Scripting with C++ Cookbook - Second Edition

How it works...

We create an array of pointers to MyInterface implementations.

Inside BeginPlay, we use TActorIterator<AActor> to get all of the Actor instances in our level.

TActorIterator has the following constructor:

explicit TActorIterator( UWorld* InWorld,  TSubclassOf<ActorType>InClass = ActorType::StaticClass() ) 
: Super(InWorld, InClass ) 

TActorIterator expects a world to act on, as well as a UClass instance to specify what types of Actor we are interested in.

ActorIterator is an iterator like the STL iterator type. This means that we can write a for loop in the following form:

for (iterator-constructor;iterator;++iterator) 

Inside the loop, we dereference the iterator to get an Actor pointer.

We then attempt to cast it to our interface; ...