AGameStateBase::AuthorityGameMode

property Engine Blueprint Since 4.14

#include "GameFramework/GameStateBase.h"

Access: public Specifiers: UPROPERTYTransientBlueprintReadOnly

Description

Reference to the active GameMode instance. Only valid on the server — this property is always null on clients, even when accessed from Blueprint.

Caveats & Gotchas

• Always null on clients — this is intentional. GameMode does not exist on clients; the GameState is the only shared game-rules object that replicates. If you're reading this from a client context, the result will be null.
• Not replicated — the property is marked Transient and has no ReplicatedUsing callback. If you need to expose game mode configuration to clients, put it on the GameState itself as a replicated property.
• Accessing this in BeginPlay on a listen server is safe; on a dedicated server client, it will be null until after the GameState actor has been received and AuthorityGameMode has been set by the GameMode.

Signature

UPROPERTY(Transient, BlueprintReadOnly, Category=GameState)
TObjectPtr<AGameModeBase> AuthorityGameMode;

Example

Access game mode settings from the game state (server only) C++

// Safe to use inside server-side GameState code
void AMyGameState::ServerOnlyLogic()
{
    if (AuthorityGameMode)
    {
        AMyGameMode* GM = Cast<AMyGameMode>(AuthorityGameMode);
        if (GM)
        {
            UE_LOG(LogTemp, Log, TEXT("Round time: %f"), GM->RoundDuration);
        }
    }
}

Version History

Introduced in: 4.14

Version	Status	Notes
5.6	stable	—

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