Setup Post-mission Camera

protected:
    UPROPERTY(EditDefaultsOnly,Category="Spectating")
    TSubclassOf<AActor> SpectatingViewpointClass;  

void AFPSGameMode::CompleteMission(APawn* InstigatorPawn)
{
    if (InstigatorPawn)
    {
        InstigatorPawn->DisableInput(nullptr);
        if (SpectatingViewpointClass)
        {
            TArray<AActor*> ReturnedActors;
            UGameplayStatics::GetAllActorsOfClass(this, SpectatingViewpointClass, ReturnedActors);
            //找到任何有效actor后，更改目标视角
            if (ReturnedActors.Num() > 0)
            {
                AActor* NewViewTarget = ReturnedActors[0];
                APlayerController* PC = Cast<APlayerController>(InstigatorPawn->GetController());
                if (PC)
                {
                    PC->SetViewTargetWithBlend(NewViewTarget, 0.5f, EViewTargetBlendFunction::VTBlend_Cubic);
                }
            }
        }
        else
        {
            UE_LOG(LogTemp, Warning, TEXT("SpectatingViewpointClass is nullptr"));
        }
    }
    OnMissionComplete(InstigatorPawn);
}