UAnimInstance::WasAnimNotifyTriggeredInSourceState

function Engine Blueprint Since 4.11

#include "Animation/AnimInstance.h"

Access: public Specifiers: UFUNCTIONBlueprintPure

Description

Returns true if a notify of the given class was triggered during the last frame while the specified state was the source state of a transition. Use this inside transition rules to condition transitions on notify events fired in the state being exited.

Caveats & Gotchas

• MachineIndex and StateIndex are internal indices, not human-readable names. Use the BlueprintInternalUseOnly getter functions (GetCurrentStateName etc.) or hard-coded indices from the Anim BP compiler to obtain them reliably.
• Only returns true for the single frame in which the notify was triggered; if your transition rule logic runs after that frame, the value will be false even though the notify did fire.

Signature

UFUNCTION(BlueprintPure, Category="Animation")
bool WasAnimNotifyTriggeredInSourceState(int32 MachineIndex, int32 StateIndex, TSubclassOf<UAnimNotify> AnimNotifyType) const;

Parameters

Name	Type	Description	Default
MachineIndex	int32	Index of the state machine to query.	—
StateIndex	int32	Index of the source state within the machine.	—
AnimNotifyType	TSubclassOf<UAnimNotify>	Class of the notify to check for.	—

Return Type

bool

Example

Check notify in transition rule (C++) C++

// Inside a custom UAnimInstance subclass, from a CanEnterTransition override:
bool UMyAnimInstance::CanEnterTransitionFromAttack(int32 MachineIndex, int32 StateIndex)
{
    return WasAnimNotifyTriggeredInSourceState(MachineIndex, StateIndex, UAnimNotify_AttackEnd::StaticClass());
}

Version History

Introduced in: 4.11

Version	Status	Notes
5.6	stable	—

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