GetLifetimeReplicatedProps() override in BP?

Development Programming & Scripting Blueprint
, , , , ,
1

Hey, i have overridden GetLifetimeReplicatedProps() in my C++ superclass, and now when i set some variable (that i have introduced in BP child class) to replicate - it doesn’t. (server event won’t replicate the value to clients, even though that variable is set to “Replicated”)

I suspect it is because i have touched GetLifetimeReplicatedProps() in C++, and the new variable from BP is not mentioned in that function’s DOREPLIFETIME() list:

231003-screenshot-6.png
231003-screenshot-6.png726×73 2.42 KB

How should i do about that? is there a way to add my BP variable to GetLifetimeReplicatedProps() macros list?

For clarification sake, if i run the same event in BP on a variable that were introduced to GetLifetimeReplicatedProps() in C++, it does replicate. so the problem is not in the way i call events i guess.

2

It’s probably due to not calling the base class implementation of the method:
Super::GetLifetimeReplicatedProps(OutLifetimeProps);

3

how can i do it from inside BP though?

4

The point is the replication of blueprint variables is implemented in C++ by the engine, most probably in the UObject implementation of GetLifetimeReplicatedProps. So long as you make the above call in your C++ derived class, any blueprints deriving from it should replicate their properties properly.

5

didn’t understand the answer correctly the previous time, i thought you mean calling Super’s in BP.

void ACreature::GetLifetimeReplicatedProps(TArray< FLifetimeProperty > & OutLifetimeProps) const
{ 
    Super::GetLifetimeReplicatedProps(OutLifetimeProps);
    DOREPLIFETIME( ACreature, HP ); 
}

has solved the thing for all the children including BP. :]
thank you very much.