UBlackboardComponent::CopyKeyValue
#include "BehaviorTree/BlackboardComponent.h"
Access: public
Description
Copies the raw value stored under SourceKeyID into DestinationID and returns true if the copy succeeded.
Caveats & Gotchas
- • Both keys must hold the same underlying UBlackboardKeyType; copying between mismatched types (e.g. Vector into Bool) fails and returns false.
- • Triggers a change notification on the destination key, so any registered observers on DestinationID will fire as if SetValue had been called directly.
Signature
bool CopyKeyValue(FBlackboard::FKey SourceKeyID, FBlackboard::FKey DestinationID)Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| SourceKeyID | FBlackboard::FKey | Key to copy the value from. | — |
| DestinationID | FBlackboard::FKey | Key to copy the value into. | — |
Return Type
bool Example
Duplicate a key's value into another key C++
FBlackboard::FKey SourceID = BlackboardComp->GetKeyID(TEXT("TargetLocation"));
FBlackboard::FKey DestID = BlackboardComp->GetKeyID(TEXT("LastKnownLocation"));
BlackboardComp->CopyKeyValue(SourceID, DestID);Tags
Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
Feedback
Was this helpful?