C++ (Cpp) UWorld::TimeSince Examples

Example #1

File: MovementComponent.cpp Project: WasPedro/UnrealEngine4.11-HairWorks

bool UMovementComponent::ShouldSkipUpdate(float DeltaTime) const
{
	if (UpdatedComponent == nullptr)
	{
		return true;
	}
		
	if (UpdatedComponent->Mobility != EComponentMobility::Movable)
	{
#if WITH_EDITOR
		if (!bEditorWarnedStaticMobilityMove)
		{
			if (UWorld * World = GetWorld())
			{
				if (World->HasBegunPlay() && IsRegistered())
				{
					const_cast<UMovementComponent*>(this)->bEditorWarnedStaticMobilityMove = true;
					FMessageLog("PIE").Warning(FText::Format(LOCTEXT("InvalidMove", "Mobility of {0} : {1} has to be 'Movable' if you'd like to move it with {2}. "),
						FText::FromString(GetNameSafe(UpdatedComponent->GetOwner())), FText::FromString(UpdatedComponent->GetName()), FText::FromString(GetClass()->GetName())));
				}
			}
		}
#endif

		return true;
	}

	if (bUpdateOnlyIfRendered)
	{
		if (GetNetMode() == NM_DedicatedServer)
		{
			// Dedicated servers never render
			return true;
		}

		const float RenderTimeThreshold = 0.41f;
		UWorld* TheWorld = GetWorld();
		if (UpdatedPrimitive && TheWorld->TimeSince(UpdatedPrimitive->LastRenderTime) <= RenderTimeThreshold)
		{
			return false; // Rendered, don't skip it.
		}

		// Most components used with movement components don't actually render, so check attached children render times.
		TArray<USceneComponent*> Children;
		UpdatedComponent->GetChildrenComponents(true, Children);
		for (auto Child : Children)
		{
			const UPrimitiveComponent* PrimitiveChild = Cast<UPrimitiveComponent>(Child);
			if (PrimitiveChild)
			{
				if (PrimitiveChild->IsRegistered() && TheWorld->TimeSince(PrimitiveChild->LastRenderTime) <= RenderTimeThreshold)
				{
					return false; // Rendered, don't skip it.
				}
			}
		}

		// No children were recently rendered, safely skip the update.
		return true;
	}

	return false;
}