Unreal Engine 4.26 Documentation

Unreal Engine 4.27 Documentation

Unreal Engine 5.0 Documentation

Unreal Engine 5.1 Documentation

Unreal Engine 5.2 Documentation

Unreal Engine 5.3 Documentation

Light Theme

Dark Theme

UBlackboardData

Windows

MacOS

Linux

Inheritance Hierarchy

UObjectBase

UObjectBaseUtility

UObject

UDataAsset

UBlackboardData

References

Module	AIModule
Header	/Engine/Source/Runtime/AIModule/Classes/BehaviorTree/BlackboardData.h
Include	#include "BehaviorTree/BlackboardData.h"

Syntax

class UBlackboardData : public UDataAsset

Variables

	Name	Description
FBlackboard::FK...	FirstKeyID
TArray< FBlackb...	Keys	Blackboard keys
UBlackboardData...	Parent	Parent blackboard (keys can be overridden)
TArray< FBlackb...	ParentKeys	All keys inherited from parent chain

Constructors

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

Functions

	Name	Description
FBlackboard:...	GetFirstKeyID()
const FBlack...	GetKey ( FBlackboard::FKey KeyID )
FBlackboard:...	GetKeyID ( const FName& KeyName )
FName	GetKeyName ( FBlackboard::FKey KeyID )
const TArray...	GetKeys()
TSubclassOf<...	GetKeyType ( FBlackboard::FKey KeyID )
int32	GetNumKeys()
bool	HasSynchronizedKeys()
FBlackboard:...	InternalGetKeyID ( const FName& KeyName, EKeyLookupMode LookupMode )
bool	IsChildOf ( const UBlackboardData& OtherAsset )	Returns true if OtherAsset is somewhere up the parent chain of this asset.
bool	IsKeyInstanceSynced ( FBlackboard::FKey KeyID )
bool	IsRelatedTo ( const UBlackboardData& OtherAsset )	Returns true if OtherAsset is equal to this, or is it's parent, or this is OtherAsset's parent
bool	IsValid()
void	PropagateKeyChangesToDerivedBlackboardAssets()
void	UpdateDeprecatedKeys()	Fix entries with deprecated key types
void	UpdateIfHasSynchronizedKeys()
void	UpdateKeyIDs()	Forces update of FirstKeyID, which depends on parent chain
void	UpdateParentKeys()	Updates parent key cache for editor
T *	UpdatePersistentKey ( const FName& KeyName )	Updates persistent key with given name, depending on currently defined entries and parent chain

Overridden from UObject

	Name	Description
void	PostEditChangeProperty ( FPropertyChangedEvent& PropertyCha... )	Called when a property on this object has been modified externally
void	PostInitProperties()	Called after the C++ constructor and after the properties have been initialized, including those loaded from config.
void	PostLoad()	Do any object-specific cleanup required immediately after loading an object.

Enums

	Name	Description
	EKeyLookupMode

Typedefs

Name	Description
FBlackboardDataChanged	A delegate called on PostEditChangeProperty. Can be used in editor to react to asset changes.
FKeyUpdate

Constants

Name	Description
OnBlackboardDataChanged
OnUpdateKeys	Delegate called for every loaded blackboard asset meant for adding game specific persistent keys

Deprecated Functions

		Name	Description
	bool	HasParent ( const UBlackboardData* TestPar... )	This function is deprecated, please use IsChildOf instead.

Help shape the future of Unreal Engine documentation! Tell us how we're doing so we can serve you better.

Take our survey

Dismiss