void ULevelStreaming::RenameForPIE(int32 PIEInstanceID)
{
// Apply PIE prefix so this level references
if (!WorldAsset.IsNull())
{
// Store original name
if (PackageNameToLoad == NAME_None)
{
FString NonPrefixedName = UWorld::StripPIEPrefixFromPackageName(
GetWorldAssetPackageName(),
UWorld::BuildPIEPackagePrefix(PIEInstanceID));
PackageNameToLoad = FName(*NonPrefixedName);
}
const FString PlayWorldSteamingLevelName = UWorld::ConvertToPIEPackageName(GetWorldAssetPackageName(), PIEInstanceID);
SetWorldAssetByPackageName(FName(*PlayWorldSteamingLevelName));
}
// Rename LOD levels if any
if (LODPackageNames.Num() > 0)
{
LODPackageNamesToLoad.Empty();
for (auto It = LODPackageNames.CreateIterator(); It; ++It)
{
// Store LOD level original package name
LODPackageNamesToLoad.Add(*It);
// Apply PIE prefix to package name
*It = FName(*UWorld::ConvertToPIEPackageName((*It).ToString(), PIEInstanceID));
}
}
}
void ULevelStreaming::PostLoad()
{
Super::PostLoad();
const bool PIESession = GetWorld()->WorldType == EWorldType::PIE || GetOutermost()->HasAnyPackageFlags(PKG_PlayInEditor);
// If this streaming level was saved with a short package name, try to convert it to a long package name
if ( !PIESession && PackageName_DEPRECATED != NAME_None )
{
const FString DeprecatedPackageNameString = PackageName_DEPRECATED.ToString();
if ( FPackageName::IsShortPackageName(PackageName_DEPRECATED) == false )
{
// Convert the FName reference to a TAssetPtr, then broadcast that we loaded a reference
// so this reference is gathered by the cooker without having to resave the package.
SetWorldAssetByPackageName(PackageName_DEPRECATED);
FCoreUObjectDelegates::StringAssetReferenceLoaded.ExecuteIfBound(WorldAsset.ToStringReference().ToString());
}
else
{
UE_LOG(LogLevelStreaming, Display, TEXT("Invalid streaming level package name (%s). Only long package names are supported. This streaming level may not load or save properly."), *DeprecatedPackageNameString);
}
}
if ( !PIESession && !WorldAsset.IsNull() )
{
const FString WorldPackageName = GetWorldAssetPackageName();
if (FPackageName::DoesPackageExist(WorldPackageName) == false)
{
UE_LOG(LogLevelStreaming, Display, TEXT("Failed to find streaming level package file: %s. This streaming level may not load or save properly."), *WorldPackageName);
#if WITH_EDITOR
if (GIsEditor)
{
// Launch notification to inform user of default change
FFormatNamedArguments Args;
Args.Add(TEXT("PackageName"), FText::FromString(WorldPackageName));
FNotificationInfo Info(FText::Format(LOCTEXT("LevelStreamingFailToStreamLevel", "Failed to find streamed level {PackageName}, please fix the reference to it in the Level Browser"), Args));
Info.ExpireDuration = 7.0f;
FSlateNotificationManager::Get().AddNotification(Info);
}
#endif // WITH_EDITOR
}
}
if (GetLinkerUE4Version() < VER_UE4_LEVEL_STREAMING_DRAW_COLOR_TYPE_CHANGE)
{
LevelColor = DrawColor_DEPRECATED;
}
}
ULevelStreaming* UWorldComposition::CreateStreamingLevel(const FWorldCompositionTile& InTile) const
{
UWorld* OwningWorld = GetWorld();
UClass* StreamingClass = ULevelStreamingKismet::StaticClass();
auto StreamingLevel = NewObject<ULevelStreaming>(OwningWorld, StreamingClass, NAME_None, RF_Transient, NULL);
// Associate a package name.
StreamingLevel->SetWorldAssetByPackageName(InTile.PackageName);
StreamingLevel->PackageNameToLoad = InTile.PackageName;
//Associate LOD packages if any
StreamingLevel->LODPackageNames = InTile.LODPackageNames;
return StreamingLevel;
}
