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  3. ULevel

ULevel

The level object.

API > API/Runtime > API/Runtime/Engine

The level object. Contains the level's actor list, BSP information, and brush list. Every Level has a World as its Outer and can be used as the PersistentLevel, however, when a Level has been streamed in the OwningWorld represents the World that it is a part of. A Level is a collection of Actors (lights, volumes, mesh instances etc.). Multiple Levels can be loaded and unloaded into the World to create a streaming experience.

   
Name ULevel
Type class
Header File /Engine/Source/Runtime/Engine/Classes/Engine/Level.h
Include Path #include "Engine/Level.h"

Syntax

UCLASS (MinimalAPI)  
class ULevel :  
    public UObject ,  
    public IInterface_AssetUserData ,  
    public ITextureStreamingContainer ,  
    public IEditorPathObjectInterface

Inheritance Hierarchy

Implements Interfaces

Constructors

Name Remarks Include Path Unreal Specifiers

ULevel ( const FObjectInitializer& ObjectInitializer
)

   Engine/Level.h  

ULevel ( FVTableHelper& Helper
)

 DO NOT USE. This constructor is for internal usage only for hot-reload purposes. Engine/Level.h  

Destructors

Name Remarks Include Path Unreal Specifiers

~ULevel()

   Engine/Level.h  

Classes

Name Remarks
FLevelBoundsActorUpdatedEvent Called when Level bounds actor has been updated
FLoadedActorAddedToLevelEvent Called when dynamically loaded actor is added to this level
FLoadedActorAddedToLevelPostEvent Called when dynamically loaded actors were added to this level
FLoadedActorAddedToLevelPreEvent Called when dynamically loaded actors are being added to this level
FLoadedActorRemovedFromLevelEvent Called when dynamically loaded actor is removed from this level
FLoadedActorRemovedFromLevelPostEvent Called when dynamically loaded actors were removed from this level
FLoadedActorRemovedFromLevelPreEvent Called when dynamically loaded actors are being removed from this level

Enums

Public

Name Remarks
EIncrementalComponentState  

Typedefs

Name Type Remarks Include Path
FLevelCleanupEvent TMulticastDelegate_NoParams< void > Event on level cleanup. Engine/Level.h
FLevelExternalActorsPathsProviderDelegate TBaseDelegate_ThreeParams< void, const FString &, const FString &, TArray< FString > & >   Engine/Level.h
FLevelMountPointResolverDelegate TBaseDelegate_ThreeParams< bool, const FString &, const UObject *, FString & >   Engine/Level.h
FLevelTransformEvent TMulticastDelegate_OneParam< void, const FTransform & > Event on level transform changes. Engine/Level.h

Constants

Name Type Remarks Include Path
DontLoadExternalFoldersTag const FName   Engine/Level.h
DontLoadExternalObjectsTag const FName   Engine/Level.h
LevelDirtiedEvent FSimpleMulticastDelegate Called when a level package has been dirtied. Engine/Level.h
LevelExternalActorsPathsProviders TArray< FLevelExternalActorsPathsProviderDelegate > Array of registered delegates used by GetExternalActorsPaths. Engine/Level.h
LevelMountPointResolvers TArray< FLevelMountPointResolverDelegate > Array of registered delegates used by GetExternalActorsPaths. Engine/Level.h
LoadAllExternalObjectsTag const FName   Engine/Level.h
OverrideSpawningLevelMountPointObject TWeakObjectPtr< const UObject > Override spawning Level Mount Point object used when spawning an actor using external packaging Engine/Level.h
StreamedLevelsOwningWorld TMap< FName, TWeakObjectPtr< UWorld > > Set before calling LoadPackage for a streaming level to ensure that OwningWorld is correct on the Level Engine/Level.h

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
ActorCluster TObjectPtr< ULevelActorContainer >   Engine/Level.h
  • Transient
  • DuplicateTransient
  • NonTransactional
ActorPackagingScheme EActorPackagingScheme   Engine/Level.h  
Actors TArray< TObjectPtr< AActor > > Array of all actors in this level, used by FActorIteratorBase and derived classes Engine/Level.h  
ActorsForGC TArray< TObjectPtr< AActor > > Array of actors to be exposed to GC in this level. Engine/Level.h  
bActorClusterCreated uint8 Whether the level had its actor cluster created. Engine/Level.h  
bAlreadyAssociatedStreamableResources uint8 Whether we already associated streamable resources. Engine/Level.h  
bAlreadyClearedActorsSeamlessTravelFlag uint8 Whether we already cleared AActor::bActorSeamlessTraveled. Engine/Level.h  
bAlreadyInitializedNetworkActors uint8 Whether we already initialized network actors. Engine/Level.h  
bAlreadyMovedActors uint8 The below variables are used temporarily while making a level visible. Engine/Level.h  
bAlreadyShiftedActors uint8 Whether we already shift actors positions according to world composition. Engine/Level.h  
bAlreadySortedActorList uint8 Whether we already sorted the actor list. Engine/Level.h  
bAlreadyUpdatedComponents uint8 Whether we already updated components. Engine/Level.h  
bAreComponentsCurrentlyRegistered uint8 Whether components are currently registered or not. Engine/Level.h  
bClientOnlyVisible uint8 Whether this level is specific to client, visibility state will not be replicated to server Engine/Level.h  
bContainsStableActorGUIDs uint8 Whether the level has been saved after introducing actor GUIDs Engine/Level.h  
bFixupActorFoldersAtLoad uint8 Whether the level should call FixupActorFolders on its actors when loading the level/actors (only used when level is using actor folder objects) Engine/Level.h  
bGarbageCollectionClusteringEnabled uint8 If true, allows garbage collection clustering for the level Engine/Level.h  
bGeometryDirtyForLighting uint8 Whether the geometry needs to be rebuilt for correct lighting Engine/Level.h  
bHasCurrentActorCalledPreRegister uint8   Engine/Level.h  
bHasRerunConstructionScripts uint8 Whether this level has gone through a complete rerun construction script pass. Engine/Level.h  
bIncrementalUnregisterComponentsCompleted uint8 Whether the level incremental unregistration of components is completed Engine/Level.h  
bIsAssociatingLevel uint8 Whether this level is in the process of being associated with its world (i.e. we are within AddToWorld for this level Engine/Level.h  
bIsBeingRemoved uint8 Whether the level is currently being removed from the world Engine/Level.h  
bIsDisassociatingLevel uint8 Whether this level is in the process of being disassociated with its world (i.e. we are within RemoveFromWorld for this level Engine/Level.h  
bIsLightingScenario uint8 Whether the level is a lighting scenario. Engine/Level.h  
bIsPartitioned uint8 Whether the level is partitioned or not. Engine/Level.h  
bIsVisible uint8 Whether the level is currently visible/ associated with the world. Engine/Level.h
  • Transient
bLocked uint8 Whether this level is locked; that is, its actors are read-only Used by WorldBrowser to lock a level when corresponding ULevelStreaming does not exist Engine/Level.h  
bPromptWhenAddingToLevelBeforeCheckout bool   Engine/Level.h
  • Transient
bPromptWhenAddingToLevelOutsideBounds bool   Engine/Level.h
  • Transient
bRequireFullVisibilityToRender uint8 Whether this level should be fully added to the world before rendering its components Engine/Level.h  
bStaticComponentsRegisteredInStreamingManager uint8 Whether the level has finished registering all static components in the streaming manager. Engine/Level.h
  • Transient
  • DuplicateTransient
  • NonTransactional
bTextureStreamingRotationChanged uint8 Whether a level transform rotation was applied since the texture streaming builds. Engine/Level.h  
bUseExternalActors bool Use external actors, new actor spawned in this level will be external and existing external actors will be loaded on load. Engine/Level.h
  • EditInstanceOnly
  • Category=World
bWasDuplicated uint8 Whether this level was duplicated Engine/Level.h  
bWasDuplicatedForPIE uint8 Whether this level was duplicated for PIE Engine/Level.h  
CurrentActorIndexForIncrementalUpdate int32 Current index into actors array for updating components. Engine/Level.h  
CurrentActorIndexForUnregisterComponents int32 Current index into actors array for updating components. Engine/Level.h  
FixupOverrideVertexColorsCount std::atomic< uint32 >   Engine/Level.h  
FixupOverrideVertexColorsTimeMS std::atomic< uint64 >   Engine/Level.h  
IncrementalComponentState EIncrementalComponentState The current stage for incrementally updating actor components in the level Engine/Level.h  
InstancedFoliageActor TWeakObjectPtr< AInstancedFoliageActor > Cached pointer to Foliage actor Engine/Level.h  
LevelBoundsActor TWeakObjectPtr< ALevelBounds > Actor which defines level logical bounding box Engine/Level.h  
LevelBuildDataId FGuid Identifies map build data specific to this level, eg lighting volume samples. Engine/Level.h  
LevelColor FLinearColor The level color used for visualization. Engine/Level.h  
LevelScriptActor TObjectPtr< class ALevelScriptActor > The level scripting actor, created by instantiating the class from LevelScriptBlueprint. Engine/Level.h
  • NonTransactional
LevelScriptBlueprint TObjectPtr< class ULevelScriptBlueprint > Reference to the blueprint for level scripting Engine/Level.h
  • NonTransactional
LevelSimplification FLevelSimplificationDetails Level simplification settings for each LOD Engine/Level.h  
LightBuildLevelOffset FIntVector Level offset at time when lighting was built Engine/Level.h  
LightmapTotalSize float Total number of KB used for lightmap textures in the level. Engine/Level.h
  • VisibleAnywhere
  • Category=Level
MapBuildData TObjectPtr< UMapBuildDataRegistry > Registry for data from the map build. Engine/Level.h
  • NonPIEDuplicateTransient
Model TObjectPtr< class UModel > BSP UModel. Engine/Level.h  
ModelComponents TArray< TObjectPtr< class UModelComponent > > BSP Model components used for rendering. Engine/Level.h  
NavDataChunks TArray< TObjectPtr< UNavigationDataChunk > > Navigation related data that can be stored per level Engine/Level.h  
NavListEnd TObjectPtr< class ANavigationObjectBase >   Engine/Level.h  
NavListStart TObjectPtr< class ANavigationObjectBase > Start and end of the navigation list for this level, used for quickly fixing up when streaming this level in/out. Engine/Level.h  
NumTextureStreamingDirtyResources int32 Num of resources that have changed since the last texture streaming build. Updated in map check. Engine/Level.h
  • NonTransactional
NumTextureStreamingUnbuiltComponents int32 Num of components missing valid texture streaming data. Updated in map check. Engine/Level.h
  • NonTransactional
OnApplyLevelTransform FLevelTransformEvent   Engine/Level.h  
OnCleanupLevel FLevelCleanupEvent   Engine/Level.h  
OnLoadedActorAddedToLevelEvent FLoadedActorAddedToLevelEvent   Engine/Level.h  
OnLoadedActorAddedToLevelPostEvent FLoadedActorAddedToLevelPostEvent   Engine/Level.h  
OnLoadedActorAddedToLevelPreEvent FLoadedActorAddedToLevelPreEvent   Engine/Level.h  
OnLoadedActorRemovedFromLevelEvent FLoadedActorRemovedFromLevelEvent   Engine/Level.h  
OnLoadedActorRemovedFromLevelPostEvent FLoadedActorRemovedFromLevelPostEvent   Engine/Level.h  
OnLoadedActorRemovedFromLevelPreEvent FLoadedActorRemovedFromLevelPreEvent   Engine/Level.h  
OwningWorld TObjectPtr< UWorld > The World that has this level in its Levels array. Engine/Level.h
  • Transient
PackedTextureStreamingQualityLevelFeatureLevel uint32 Packed quality level and feature level used when building texture streaming data. Engine/Level.h  
PlayFromHereActor AActor *   Engine/Level.h  
PrecomputedLightVolume FPrecomputedLightVolume * The precomputed light information for this level. Engine/Level.h  
PrecomputedVisibilityHandler FPrecomputedVisibilityHandler Contains precomputed visibility data for this level. Engine/Level.h  
PrecomputedVolumeDistanceField FPrecomputedVolumeDistanceField Precomputed volume distance field for this level. Engine/Level.h  
PrecomputedVolumetricLightmap FPrecomputedVolumetricLightmap * The volumetric lightmap data for this level. Engine/Level.h  
RemoveFromSceneFence FRenderCommandFence Fence used to track when the rendering thread has finished referencing this ULevel's resources. Engine/Level.h  
ShadowmapTotalSize float Total number of KB used for shadowmap textures in the level. Engine/Level.h
  • VisibleAnywhere
  • Category=Level
StaticNavigableGeometry TArray< FVector > Threes of triangle vertices - AABB filtering friendly. Engine/Level.h  
StreamingTextureGuids TArray< FGuid > The Guid of each streamable texture refered by FStreamingTextureBuildInfo::TextureLevelIndex Engine/Level.h  
StreamingTextures TArray< FName > The name of each streamable texture referred by FStreamingTextureBuildInfo::TextureLevelIndex Engine/Level.h  
TextureStreamingResourceGuids TArray< FGuid > The Guid list of all materials and meshes Guid used in the last texture streaming build. Engine/Level.h
  • NonTransactional
TickTaskLevel FTickTaskLevel * Data structures for holding the tick functions Engine/Level.h  
URL FURL URL associated with this level. Engine/Level.h  
VolumetricLightmapGridManager FVolumetricLightmapGridManager * The volumetric lightmap grid manager for this map Engine/Level.h  

Protected

Name Type Remarks Include Path Unreal Specifiers
ActorFolders TMap< FGuid, TObjectPtr< UActorFolder > > Actor folder objects. They can either be saved inside level or in their own package. Engine/Level.h
  • Transient
AsyncRegisterLevelContext TUniquePtr< FAsyncRegisterLevelContext >   Engine/Level.h  
bCachedHasStaticMeshCompilationPending TOptional< bool >   Engine/Level.h  
bForceCantReuseUnloadedButStillAround uint8 Whether the level is set not to be reusable after unload (editor-only) Engine/Level.h  
bForcePackageTrashingAtCleanup uint8 Whether the level will force trash its packages in CleanupLevel (including object packages of objects outered to the level) (editor-only) Engine/Level.h  
bIsMapBuildDataOwner uint8 Whether the level owns it's MapBuildData and associated resources and must release them (LevelInstance will use their owner level MapBuildData) Engine/Level.h  
bUseActorFolders bool Use actor folder objects, actor folders of this level will be persistent in their own object. Engine/Level.h
  • EditInstanceOnly
  • Category=World
CachedLevelCollection FLevelCollection * Cached level collection that this level is contained in, for faster access than looping through the collections in the world. Engine/Level.h  
DestroyedReplicatedStaticActors TArray< FReplicatedStaticActorDestructionInfo > List of replicated static actors that have been destroyed. Engine/Level.h
  • Transient
EditorPathOwner TWeakObjectPtr< UObject >   Engine/Level.h
  • Transient
FolderLabelToActorFolders TMap< FString, FActorFolderSet > Acceleration table used to find an ActorFolder object for a given folder path. Engine/Level.h
  • Transient
IncrementalUnregisterComponentState EIncrementalUnregisterComponentState   Engine/Level.h  
LevelBoundsActorUpdatedEvent FLevelBoundsActorUpdatedEvent   Engine/Level.h  
LoadedExternalActorFolders TArray< TObjectPtr< UActorFolder > > Temporary array containing actor folder objects manually loaded from their external packages (only used while loading the level). Engine/Level.h
  • Transient
MultipleLSAsNotification TWeakPtr< SNotificationItem > Notification popup used to guide the user to repair multiple LSAs detected upon loading in the editor Engine/Level.h  
PendingAutoReceiveInputActors TArray< FPendingAutoReceiveInputActor > Actors awaiting input to be enabled once the appropriate PlayerController has been created. Engine/Level.h  
PendingVisibilityState ELevelPendingVisibilityState Whether the level is in the process of being made visible or invisible (refer to bIsVisible when None). Engine/Level.h  
PreRegisteringActorComponents TSet< UActorComponent * >   Engine/Level.h  
PreUnregisteringActorComponents TSet< UActorComponent * >   Engine/Level.h  
RouteActorEndPlayForRemoveFromWorldIndex int32   Engine/Level.h  
RouteActorInitializationIndex int32   Engine/Level.h  
RouteActorInitializationState ERouteActorInitializationState   Engine/Level.h  
WorldDataLayers TObjectPtr< AWorldDataLayers >   Engine/Level.h  
WorldPartitionRuntimeCell TSoftObjectPtr< UWorldPartitionRuntimeCell >   Engine/Level.h  
WorldSettings TObjectPtr< AWorldSettings >   Engine/Level.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void AddLoadedActor ( AActor* Actor,
const FTransform* TransformToApply
)

 Add a dynamically loaded actor to this level, as if it was part of the original map load process. Engine/Level.h  

void AddLoadedActors ( const TArray< AActor* >& ActorList,
const FTransform* TransformToApply
)

   Engine/Level.h  

void AddReplicatedDestructionInfo ( AActor*const Actor
)

   Engine/Level.h  

void ApplyWorldOffset ( const FVector& InWorldOffset,
bool bWorldShift
)

 Shift level actors by specified offset The offset vector will get subtracted from all actors positions and corresponding data structures Engine/Level.h  

void BroadcastLevelBoundsActorUpdated()

 Broadcasts that Level bounds actor has been updated Engine/Level.h  

void CleanupDeletedAndUnreferencedActorFolders()

 Deletes all actor folders marked as deleted and unreferenced by neither an actor nor another actor folder Engine/Level.h  

void CleanupLevel ( bool bCleanupResources,
bool bUnloadFromEditor
)

 Flag this level instance for destruction. Engine/Level.h  

void CleanupLevelScriptBlueprint()

 Nulls certain references related to the LevelScriptBlueprint. Called by UWorld::CleanupWorld. Engine/Level.h  

void ClearActorsSeamlessTraveledFlag()

   Engine/Level.h  

void ClearLevelComponents()

 Clears all components of actors associated with this level (aka in Actors array) and also the BSP model components. Engine/Level.h  

void CommitModelSurfaces()

 Commits changes made to the UModel's surfaces. Engine/Level.h  

void ConvertAllActorsToPackaging ( bool bExternal
)

 Convert this level actors to the specified loading strategy Engine/Level.h  

UPackage * CreateMapBuildDataPackage()

   Engine/Level.h  

void CreateModelComponents()

 Called to create ModelComponents for BSP rendering Engine/Level.h  

void CreateOrUpdateActorFolders()

 Updates all actors/folders that refer to folders marked as deleted, reparent to valid folder, deletes folders marked as deleted. Engine/Level.h  

void CreateReplicatedDestructionInfo ( AActor*const Actor
)

 Populate an entry for Actor in the DestroyedReplicatedStaticActors list Engine/Level.h  

void FixupForPIE ( int32 PIEInstanceID,
TFunctionRef< void(int32, FSoftObjectPath&)> CustomFixupFunction
)

   Engine/Level.h  

void FixupForPIE ( int32 PIEInstanceID
)

 Call on a level that was loaded from disk instead of PIE-duplicating, to fixup actor references Engine/Level.h  

void ForEachActorFolder ( TFunctionRef< bool(UActorFolder*)> Operation,
bool bSkipDeleted
)

 Iterates on all valid level actor folders. Engine/Level.h  

UActorFolder * GetActorFolder ( const FGuid& InGuid,
bool bSkipDeleted
) const

 Finds the level actor folder by its guid. Returns null if not found. Engine/Level.h  

UActorFolder * GetActorFolder ( const FName& InPath
) const

 Finds the level actor folder by its path. Returns null if not found. Engine/Level.h  

EActorPackagingScheme GetActorPackagingScheme()

 Returns the level's actor packaging scheme Engine/Level.h  

FLevelCollection * GetCachedLevelCollection()

 Returns the cached collection that contains this level, if any. May be null. Engine/Level.h  

ABrush * GetDefaultBrush()

 Returns the default brush for this level. Engine/Level.h  

const TArray< FReplicatedStaticActorDestructionInfo > & GetDestroyedReplicatedStaticActors()

   Engine/Level.h  
Estimate the amount of AddToWorld work for this level. Engine/Level.h  
Estimate the total amount of AddToWorld work for this level. Engine/Level.h  

bool GetForceCantReuseUnloadedButStillAround()

   Engine/Level.h  

ALevelScriptActor * GetLevelScriptActor()

 Returns the level scripting actor associated with this level Engine/Level.h  
Grabs a reference to the level scripting blueprint for this level. Engine/Level.h  

TArray< UPackage * > GetLoadedExternalObjectPackages()

 Get the list of (loaded) external object packages (actors/folders) associated with this level Engine/Level.h  

TArray< FString > GetOnDiskExternalActorPackages ( bool bTryUsingPackageLoadedPath
) const

 Get the list of (on disk) external actor packages associated with this level Engine/Level.h  

UMapBuildDataRegistry * GetOrCreateMapBuildData()

   Engine/Level.h  

ELevelPendingVisibilityState GetPendingVisibilityState()

 Returns level's pending visibility state Engine/Level.h  

bool GetPromptWhenAddingToLevelBeforeCheckout()

   Engine/Level.h  

bool GetPromptWhenAddingToLevelOutsideBounds()

   Engine/Level.h  

TArray< FVector > const * GetStaticNavigableGeometry()

   Engine/Level.h  

virtual UWorld * GetWorld()

   Engine/Level.h  

AWorldDataLayers * GetWorldDataLayers()

 Returns the world data layers info for this level. Engine/Level.h  

UWorldPartition * GetWorldPartition()

 Returns the UWorldPartition for this level. Engine/Level.h  

const IWorldPartitionCell * GetWorldPartitionRuntimeCell()

 Returns the RuntimeCell associated with this Level if it is a level representing a cell of a WorldPartition World. Engine/Level.h  

AWorldSettings * GetWorldSettings ( bool bChecked
) const

 Returns the world info for this level. Engine/Level.h  

void HandleLegacyMapBuildData()

 Creates UMapBuildDataRegistry entries for legacy lightmaps from components loaded for this level. Engine/Level.h  

bool HasAnyActorsOfType ( UClass* SearchType
)

 Utility searches this level's actor list for any actors of the specified type. Engine/Level.h  

bool HasStaticMeshCompilationPending()

 Returns true if the level contains static meshes that have not finished compiling yet. Engine/Level.h  

bool HasVisibilityChangeRequestPending()

 Whether the level is currently pending being made invisible or visible. Engine/Level.h  

bool IncrementalUnregisterComponents ( int32 NumComponentsToUnregister,
FUnregisterComponentContext* Context
)

 Incrementally unregisters all components of actors associated with this level. Engine/Level.h  

void IncrementalUpdateComponents ( int32 NumComponentsToUpdate,
bool bRerunConstructionScripts,
FRegisterComponentContext* Context
)

 Incrementally updates all components of actors associated with this level. Engine/Level.h  

void Initialize ( const FURL& InURL
)

 Constructor. Engine/Level.h  

void InitializeNetworkActors()

 Handles network initialization for actors in this level Engine/Level.h  

void InitializeRenderingResources()

 Initializes rendering resources for this level. Engine/Level.h  

void InvalidateModelGeometry()

 Invalidates the cached data used to render the level's UModel. Engine/Level.h  
Discards the cached data used to render the level's UModel. Engine/Level.h  

bool IsCurrentLevel()

 Is this the current level in the world it is owned by Engine/Level.h  

bool IsFinishedRouteActorInitialization()

 Returns whether the level has completed routing actor initialization. Engine/Level.h  

bool IsInstancedLevel()

 Is this a level instance Engine/Level.h  

bool IsMapBuildDataOwner()

   Engine/Level.h  

bool IsPersistentLevel()

 Is this the persistent level Engine/Level.h  

bool IsUsingActorFolders()

 Returns true if the level uses actor folders mode. Engine/Level.h  

bool IsUsingExternalActors()

 Returns true if the level uses external actors mode. Engine/Level.h  

bool IsUsingExternalObjects()

 Returns true if the level uses external objects. Engine/Level.h  

bool IsWorldPartitionRuntimeCell()

 Returns if the level is a cell from a WorldPartition World. Engine/Level.h  

FLevelBoundsActorUpdatedEvent & LevelBoundsActorUpdated()

   Engine/Level.h  

void MarkLevelBoundsDirty()

 Marks level bounds as dirty so they will be recalculated Engine/Level.h  

void MarkLevelComponentsRenderStateDirty()

 Marks all level components render state as dirty Engine/Level.h  

void OnApplyNewLightingData ( bool bLightingSuccessful
)

 Called after lighting was built and data gets propagated to this level Engine/Level.h  

void OnLevelLoaded()

 Called when level is loaded. Engine/Level.h  
Called when the level script blueprint has been successfully changed and compiled. Engine/Level.h  

void PostRenameFromRoot ( const FWorldRenameFromRootContext& RenameContext
)

   Engine/Level.h  

void PostSaveFromRoot ( FObjectPostSaveRootContext ObjectSaveContext
)

   Engine/Level.h  

void PreRenameFromRoot ( const FWorldRenameFromRootContext& RenameContext
)

   Engine/Level.h  

void PreSaveFromRoot ( FObjectPreSaveRootContext ObjectSaveContext
)

   Engine/Level.h  

void PushPendingAutoReceiveInput ( APlayerController* PC
)

 Push any pending auto receive input actor's input components on to the player controller's input stack Engine/Level.h  

void RegisterActorForAutoReceiveInput ( AActor* Actor,
const int32 PlayerIndex
)

 Register an actor that should be added to a player's input stack when they are created Engine/Level.h  

uint16 RegisterStreamableTexture ( const FString& InTextureName,
const FGuid& InTextureGuid
)

   Engine/Level.h  

void ReleaseRenderingResources()

 Releases rendering resources for this level. Engine/Level.h  

void RemoveLoadedActor ( AActor* Actor,
const FTransform* TransformToRemove
)

 Remove a dynamically loaded actor from this level. Engine/Level.h  

void RemoveLoadedActors ( const TArray< AActor* >& ActorList,
const FTransform* TransformToRemove
)

   Engine/Level.h  

void ResetNavList()

 Resets the level nav list. Engine/Level.h  

void ResetRouteActorInitializationState()

 Method for resetting routing actor initialization for the next time this level is streamed. Engine/Level.h  

void RouteActorInitialize ( int32 NumActorsToProcess
)

 Routes pre and post initialize to actors and also sets volumes. Engine/Level.h  

void SetCachedLevelCollection ( FLevelCollection*const InCachedLevelCollection
)

 Sets the cached level collection that contains this level. Engine/Level.h  

void SetEditorPathOwner ( UObject* InEditorPathOwner
)

   Engine/Level.h  

void SetForceCantReuseUnloadedButStillAround ( bool bNewValue
)

   Engine/Level.h  

void SetLightingScenario ( bool bNewIsLightingScenario
)

 Sets whether this level is a lighting scenario and handles propagating the change. Engine/Level.h  

bool SetUseActorFolders ( bool bEnabled,
bool bInteractive
)

 Sets if the level uses actor folders mode or not. Returns true if succeeded. Engine/Level.h  

void SetUseExternalActors ( bool bEnable
)

 Sets if the level uses external actors mode or not. Engine/Level.h  

void SetWorldDataLayers ( AWorldDataLayers* NewWorldDataLayers
)

   Engine/Level.h  

void SetWorldSettings ( AWorldSettings* NewWorldSettings
)

   Engine/Level.h  

bool ShouldCreateNewExternalActors()

 Returns true if the level wants newly spawned actors to be external Engine/Level.h  

void SortActorList ()

 Sorts the actor list by net relevancy and static behaviour. Engine/Level.h  

bool TryAddActorToList ( AActor* InActor,
bool bAddUnique
)

 Add actor to list Engine/Level.h  

void UpdateLevelComponents ( bool bRerunConstructionScripts,
FRegisterComponentContext* Context
)

 Updates all components of actors associated with this level (aka in Actors array) and creates the BSP model components. Engine/Level.h  

void UpdateModelComponents()

 Updates the model components associated with this level Engine/Level.h  

Overridden from UObject

Name Remarks Include Path Unreal Specifiers

virtual void BeginCacheForCookedPlatformData ( const ITargetPlatform* TargetPlatform
)

   Engine/Level.h  

virtual void BeginDestroy()

   Engine/Level.h  

virtual void FinishDestroy()

   Engine/Level.h  

virtual bool IsNameStableForNetworking()

   Engine/Level.h  

virtual bool IsReadyForFinishDestroy()

   Engine/Level.h  

virtual void PostEditChangeProperty ( FPropertyChangedEvent& PropertyChangedEvent
)

   Engine/Level.h  

virtual void PostEditUndo()

   Engine/Level.h  

virtual void PostInitProperties()

   Engine/Level.h  

virtual void PostLoad()

   Engine/Level.h  

virtual void PreDuplicate ( FObjectDuplicationParameters& DupParams
)

   Engine/Level.h  

virtual void PreEditUndo()

   Engine/Level.h  

virtual void PreSave ( FObjectPreSaveContext ObjectSaveContext
)

   Engine/Level.h  

virtual bool ResolveSubobject ( const TCHAR* SubObjectPath,
UObject*& OutObject,
bool bLoadIfExists
)

   Engine/Level.h  

virtual void Serialize ( FArchive& Ar
)

   Engine/Level.h  

Overridden from UObjectBaseUtility

Name Remarks Include Path Unreal Specifiers

virtual bool CanBeClusterRoot()

   Engine/Level.h  

virtual void CreateCluster()

   Engine/Level.h  

Overridden from IInterface_AssetUserData

Name Remarks Include Path Unreal Specifiers

virtual void AddAssetUserData ( UAssetUserData* InUserData
)

   Engine/Level.h  

virtual UAssetUserData * GetAssetUserDataOfClass ( TSubclassOf< UAssetUserData > InUserDataClass
)

 Returns an instance of the provided AssetUserData class if it's contained in the target asset. Engine/Level.h  

virtual void RemoveUserDataOfClass ( TSubclassOf< UAssetUserData > InUserDataClass
)

   Engine/Level.h  

Overridden from ITextureStreamingContainer

Name Remarks Include Path Unreal Specifiers

virtual void InitializeTextureStreamingContainer ( uint32 InPackedTextureStreamingQualityLevelFeatureLevel
)

   Engine/Level.h  

virtual uint16 RegisterStreamableTexture ( UTexture* InTexture
)

   Engine/Level.h  

Overridden from IEditorPathObjectInterface

Name Remarks Include Path Unreal Specifiers

virtual UObject * GetEditorPathOwner()

   Engine/Level.h  

Static

Name Remarks Include Path Unreal Specifiers

static void AddReferencedObjects ( UObject* InThis,
FReferenceCollector& Collector
)

   Engine/Level.h  

static void BuildStreamingData ( UWorld* World,
ULevel* TargetLevel,
UTexture2D* TargetTexture
)

 Rebuilds static streaming data for all levels in the specified UWorld. Engine/Level.h  

static UPackage * CreateActorPackage ( UPackage* InLevelPackage,
EActorPackagingScheme InActorPackagingScheme,
const FString& InActorPath,
const UObject* InMountPointContext
)

 Create an package for this actor Engine/Level.h  

static FString GetActorPackageName ( UPackage* InLevelPackage,
EActorPackagingScheme InActorPackagingScheme,
const FString& InActorPath,
const UObject* InLevelMountPointContext
)

 Get the package name for this actor Engine/Level.h  

static FString GetActorPackageName ( const FString& InBaseDir,
EActorPackagingScheme InActorPackagingScheme,
const FString& InActorPath
)

 Get the package name for this actor Engine/Level.h  

static EActorPackagingScheme GetActorPackagingSchemeFromActorPackageName ( const FStringView InActorPackageName
)

 Extract the packaging Scheme used by an external actor package based on the name of the package Engine/Level.h  

static FString GetExternalActorPackageInstanceName ( const FString& LevelPackageName,
const FString& ActorPackageName
)

 Get a properly formated external actor package instance name for this level package to be used in FLinkerInstancingContext Engine/Level.h  

static const TCHAR * GetExternalActorsFolderName()

 Get the folder name from which all external actors paths are created Engine/Level.h  

static FString GetExternalActorsPath ( UPackage* InLevelPackage,
const FString& InPackageShortName
)

 Get the folder containing the external actors for this level Engine/Level.h  

static FString GetExternalActorsPath ( const FString& InLevelPackageName,
const FString& InPackageShortName
)

 Get the folder containing the external actors for this level path Engine/Level.h  

static TArray< FString > GetExternalActorsPaths ( const FString& InLevelPackageName,
const FString& InPackageShortName
)

 Get the folders containing the external actors for this level path, including actor folders of registered plugins for this level Engine/Level.h  

static TArray< FString > GetExternalObjectsPaths ( const FString& InLevelPackageName,
const FString& InPackageShortName
)

 Get the folders containing the external objects for this level path Engine/Level.h  

static bool GetIsLevelCookedFromAsset ( const FAssetData& Asset
)

   Engine/Level.h  

static bool GetIsLevelCookedFromPackage ( FName LevelPackage
)

   Engine/Level.h  

static bool GetIsLevelPartitionedFromAsset ( const FAssetData& Asset
)

   Engine/Level.h  

static bool GetIsLevelPartitionedFromPackage ( FName LevelPackage
)

   Engine/Level.h  

static bool GetIsLevelUsingActorsDescsFromAsset ( const FAssetData& Asset
)

   Engine/Level.h  

static bool GetIsLevelUsingActorsDescsFromPackage ( FName LevelPackage
)

   Engine/Level.h  

static bool GetIsLevelUsingExternalActorsFromAsset ( const FAssetData& Asset
)

   Engine/Level.h  

static bool GetIsLevelUsingExternalActorsFromPackage ( FName LevelPackage
)

   Engine/Level.h  

static bool GetIsStreamingDisabledFromAsset ( const FAssetData& Asset
)

   Engine/Level.h  

static bool GetIsStreamingDisabledFromPackage ( FName LevelPackage
)

   Engine/Level.h  

static bool GetIsUsingActorFoldersFromAsset ( const FAssetData& Asset
)

   Engine/Level.h  

static bool GetIsUsingActorFoldersFromPackage ( FName LevelPackage
)

   Engine/Level.h  

static bool GetLevelBoundsFromAsset ( const FAssetData& Asset,
FBox& OutLevelBounds
)

   Engine/Level.h  

static bool GetLevelBoundsFromPackage ( FName LevelPackage,
FBox& OutLevelBounds
)

   Engine/Level.h  

static FVector GetLevelInstancePivotOffsetFromAsset ( const FAssetData& Asset
)

   Engine/Level.h  

static FVector GetLevelInstancePivotOffsetFromPackage ( FName LevelPackage
)

   Engine/Level.h  

static bool GetLevelScriptExternalActorsReferencesFromAsset ( const FAssetData& Asset,
TArray< FGuid >& OutLevelScriptExternalActorsReferences
)

   Engine/Level.h  

static bool GetLevelScriptExternalActorsReferencesFromPackage ( FName LevelPackage,
TArray< FGuid >& OutLevelScriptExternalActorsReferences
)

   Engine/Level.h  

static TArray< FString > GetOnDiskExternalActorPackages ( const FString& ExternalActorsPath
)

 Get the list of (on disk) external actor packages associated with this external actors path Engine/Level.h  

static const UObject * GetOverrideSpawningLevelMountPointObject()

 Returns override spawning level mount point object Engine/Level.h  

static bool GetPartitionedLevelCanBeUsedByLevelInstanceFromAsset ( const FAssetData& Asset
)

   Engine/Level.h  

static bool GetPartitionedLevelCanBeUsedByLevelInstanceFromPackage ( FName LevelPackage
)

   Engine/Level.h  

static bool GetWorldExternalActorsReferencesFromAsset ( const FAssetData& Asset,
TArray< FGuid >& OutWorldExternalActorsReferences
)

   Engine/Level.h  

static bool GetWorldExternalActorsReferencesFromPackage ( FName LevelPackage,
TArray< FGuid >& OutWorldExternalActorsReferences
)

   Engine/Level.h  

static bool IsNetActor ( const AActor* Actor
)

 Used internally to determine which actors should go on the world's NetworkActor list. Engine/Level.h  

static FDelegateHandle RegisterLevelExternalActorsPathsProvider ( const FLevelExternalActorsPathsProviderDelegate& Provider
)

 Registers a level external actor paths provider Engine/Level.h  

static FDelegateHandle RegisterLevelMountPointResolver ( const FLevelMountPointResolverDelegate& Resolver
)

 Registers a level mount point resolver Engine/Level.h  

static FString ResolveRootPath ( const FString& LevelPackageName,
const UObject* InLevelMountPointContext
)

 Returns a resolved level path using the level mount point context Engine/Level.h  

static void ScanLevelAssets ( const FString& InLevelPackageName
)

 Scans/Updates all Level Assets (level package and external packages) Engine/Level.h  

static void UnregisterLevelExternalActorsPathsProvider ( const FDelegateHandle& ProviderDelegateHandle
)

 Unregisters a level external actor paths provider Engine/Level.h  

static void UnregisterLevelMountPointResolver ( const FDelegateHandle& ResolverDelegateHandle
)

 Unregisters a level mount point resolver Engine/Level.h  

See Also

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