UAnimInstance::GetInstanceTransitionTimeElapsed

function Engine Blueprint Since 4.8

#include "Animation/AnimInstance.h"

Access: public Specifiers: UFUNCTION

Description

Returns the time in seconds that has elapsed since the specified transition began its crossfade. Returns 0.0 if the transition is not currently active.

Caveats & Gotchas

• Returns a meaningful value only while the transition is actively blending. Once the crossfade finishes and the destination state is fully active, the value resets to zero for the next time the transition fires.
• Only one transition per state machine can be active at a time. If you query a transition that is not currently blending, you will get 0.0, which is indistinguishable from a transition that just started.

Signature

UFUNCTION(BlueprintPure, Category="Animation", meta=(BlueprintInternalUseOnly = "true"))
float GetInstanceTransitionTimeElapsed(int32 MachineIndex, int32 TransitionIndex) const;

Parameters

Name	Type	Description	Default
MachineIndex	int32	Index of the state machine containing the transition.	—
TransitionIndex	int32	Index of the transition within the state machine.	—

Return Type

float

Example

Drive a secondary effect based on transition progress C++

float TimeElapsed = GetInstanceTransitionTimeElapsed(MachineIdx, TransitionIdx);
float Duration    = GetInstanceTransitionCrossfadeDuration(MachineIdx, TransitionIdx);
float Alpha = (Duration > 0.f) ? FMath::Clamp(TimeElapsed / Duration, 0.f, 1.f) : 1.f;
// Use Alpha to fade in a footstep sound or particle effect

Version History

Introduced in: 4.8

Version	Status	Notes
5.6	stable	—

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