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> Unreal Engine API Reference > Runtime > Engine > Engine > ALevelBounds

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ALevelBounds

Defines level bounds Updates bounding box automatically based on actors transformation changes or holds fixed user defined bounding box Uses only actors where [AActor::IsLevelBoundsRelevant()](API\Runtime\Engine\GameFramework\AActor\IsLevelBoundsRelevant) == true

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Inheritance Hierarchy

UObjectBase

UObjectBaseUtility

UObject

AActor

ALevelBounds

References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Classes/Engine/LevelBounds.h
Include	#include "Engine/LevelBounds.h"

Syntax

class ALevelBounds :
public AActor,
public FEditorTickableLevelBounds

Remarks

Defines level bounds Updates bounding box automatically based on actors transformation changes or holds fixed user defined bounding box Uses only actors where AActor::IsLevelBoundsRelevant() == true

Variables

	Name	Description
bool	bAutoUpdateBounds	Whether to automatically update actor bounds based on all relevant actors bounds belonging to the same level
bool	bLevelBoundsDirty	Whether currently level bounds is dirty and needs to be updated
UBoxComponent &...	BoxComponent	Bounding box for the level bounds.
bool	bUsingDefaultBounds	True when there are no actors contributing to the bounds and we are currently using the default bounds instead
FDelegateHandle	OnLevelActorAddedDelegateHandle
FDelegateHandle	OnLevelActorDeletedDelegateHandle
FDelegateHandle	OnLevelActorMovedDelegateHandle	Handles to various registered delegates

Constructors

	Name	Description
	ALevelBounds ( const FObjectInitializer& ObjectIn... )

Functions

	Name	Description
void	BroadcastLevelBoundsUpdated()	Broadcasts LevelBoundsActorUpdatedEvent in case this actor acts as a level bounds
FBox	CalculateLevelBounds ( ULevel* InLevel )
bool	IsUsingDefaultBounds()
void	MarkLevelBoundsDirty()	Marks level bounds as dirty so they will be recalculated on next tick
void	OnLevelActorAddedRemoved ( AActor* InActor )	Called whenever any actor added or removed
void	OnLevelActorMoved ( AActor* InActor )	Called whenever any actor moved
void	SubscribeToUpdateEvents()	Subscribes for actors transformation events
void	UnsubscribeFromUpdateEvents()	Unsubscribes from actors transformation events
void	UpdateLevelBounds()	Updates this actor bounding box by summing all level actors bounding boxes
void	UpdateLevelBoundsImmediately()	Update level bounds immediately so the bounds are accurate when returning.

Overridden from AActor

	Name	Description
FBox	GetComponentsBoundingBox ( bool bNonColliding, bool bIncludeFromChildActors )	Returns the world space bounding box of all components in this Actor.
bool	IsLevelBoundsRelevant()	Indicates whether this actor should participate in level bounds calculations
void	PostEditMove ( bool bFinished )	Called after an actor has been moved in the editor
void	PostRegisterAllComponents()	Called after all the components in the Components array are registered, called both in editor and during gameplay
void	PostUnregisterAllComponents()	Called after all currently registered components are cleared
void	Tick ( float DeltaTime )	FTickableGameObject interface

Overridden from UObject

	Name	Description
void	PostEditChangeProperty ( FPropertyChangedEvent& PropertyCha... )	Called when a property on this object has been modified externally
void	PostEditUndo()	Called after applying a transaction to the object.
void	PostLoad()	Do any object-specific cleanup required immediately after loading an object.

Overridden from FTickableGameObject

		Name	Description
	UWorld *	GetTickableGameObjectWorld()
	bool	IsTickableInEditor()	Used to determine whether the object should be ticked in the editor.

Overridden from FTickableObjectBase

	Name	Description
TStatId	GetStatId()	Return the stat id to use for this tickable
ETickableTic...	GetTickableTickType()	Virtual that can be overloaded by the inheriting class.
bool	IsTickable()	Virtual that can be overloaded by the inheriting class.

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