DOREPLIFETIME->OutLifetimeProbs undeclared identifir

Development Programming & Scripting Multiplayer & Networking
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1

I think i got a bug in the Version 4.18.

If i want to replicate some values i got this error.

Try to recreate the bug.

  1. Create a new Project (ThirdPerson c++)
  2. Set up the …::GetLifetimeReplicatedProbs(TArray…) function
  3. Use DOREPLIFETIME(AActor, Value)

The Compiler give me this error:

1>D:\Unreal Engine 4\Work in Progress\---.cpp(133): error C2065: 'OutLifetimeProps': undeclared identifier
1>D:\Unreal Engine 4\Work in Progress\---.cpp(133): error C2228: left of '.AddUnique' must have class/struct/union
1>  D:\Unreal Engine 4\Work in Progress\--..cpp(133): note: type is 'unknown-type'

If i comment the DOREPLIFETIME out, then it compiles fine.
I have included Net/UnrealNetwork.h and tried a view others. Like Actor.h, Engine.h and so on. My Project is at the very beginning so i made a complete new Project with the 4.18. In Version 4.17 the same Setup works just fine.

2

Problem is solved. It seems that Visual Studio doesn’t search the Header files. After cleaning and deleting the source files and recreateing it, all works fine.

3

Ty a lot, i’ve got the same problem today and it helps a lot. ps dont forget to include Net/UnrealNetwork.h for people coming here later.

4

I just had this happen to me on 4.19

5

I just had this. The problem for me was that I had renamed the “OutLifetimeProps” parameter in the function definition:

void UClassName::GetLifetimeReplicatedProps( TArray& OutLifetimeProps ) const

6 Likes
6

This solved it for me as well. Weird that the name is important at all.