Multiplayer GetGameState()->PlayerArray on Client is always 1

Development Programming & Scripting Blueprint
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1

Try:

UE_LOG(LogTemp, Warning, TEXT("GameState->PlayerArray.Num(): %s"), *FString::FromInt(GetWorld()->GetGameState()->PlayerArray.Num()));

2

After connecting with 2 clients (on different machines) to my dedicated server I’m running the following code in MyCustomPlayercontroller through a Button:

AGameStateBase *MyGameState = GetWorld()->GetGameState<AGameStateBase>(); 
//BP node equivalent (?)
//AGameStateBase *MyGameState = UGameplayStatics::GetGameState(GetWorld());

if (MyGameState)
{

	UE_LOG(LogTemp, Warning, TEXT("GameState->PlayerArray.Num(): %d"), GetWorld()->GetGameState()->PlayerArray.Num());

}

Every time a new client connects the Server is running this code in MyCustomGameModeBase::InitNewPlayer(…):

 ...
    UE_LOG(LogTemp, Warning, TEXT("GameState->PlayerArray.Num(): %d"), GameState->PlayerArray.Num());
    ...

Output Client1: GameState->PlayerArray.Num(): 1

Output Client2: GameState->PlayerArray.Num(): 1

Output Server: GameState->PlayerArray.Num(): 2

The same thing in Blueprint :

137057-bpblah.png
137057-bpblah.png711×240 49.1 KB

Output Client1: GameState->PlayerArray.Num(): 2

Output Client2: GameState->PlayerArray.Num(): 2

Output Server: GameState->PlayerArray.Num(): 2

This works like a charm so am I missing something in my C++ implementation?

3

That leads to the same result, Unfortunately the log formatting is not the problem…

Another test:

if (MyGameState)
	{
	int foo = 0;
		for (APlayerState* SinglePS : MyGameState->PlayerArray)
		{
			++foo;
		}
		UE_LOG(LogTemp, Warning, TEXT("foo: %s"), *FString::FromInt(foo));
	}

Output Client1 : foo: 1

Output Client2 : foo: 1

Output Server : foo: 2

4

Where are you calling this code? I feel like you are calling it after login but before the actual PlayerState has been created and replicated.

5

This was indeed the problem, thanks for bringing me on the right track DennyR

I’m reffering to this: https://answers.unrealengine.com/questions/183488/player-controller-get-controlled-pawn-client-delay.html

which states the same problem.
After adding a RPC to MyCustomPlayerController and executing it at PostLogin() it works.

6

Thanks to DennyR (see comment) for bringing me on the right track.