UKismetMathLibrary::ResetFloatSpringState

function Engine Blueprint Since 4.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintCallable

Description

Resets a float spring's velocity and previous-target tracking back to zero/invalid, as if it had never run. Call this before reusing a spring for an unrelated value or after a large discontinuity (e.g. a teleport) to avoid a visible snap.

Caveats & Gotchas

• Only clears the spring's internal state — it does not change the Current value you pass into FloatSpringInterp on the next call, so you may also want to explicitly reset Current at the same time.
• Forgetting to reset after reassigning a spring variable to a new logical target causes the old velocity to bleed into the new interpolation, producing an unexpected overshoot on the first few frames.

Signature

static void ResetFloatSpringState(UPARAM(ref) FFloatSpringState& SpringState)

Parameters

Name	Type	Description	Default
SpringState	FFloatSpringState&	The spring state to reset.	—

Return Type

void

Example

Reset spring state after a teleport C++

void AMyCamera::OnTeleport()
{
    UKismetMathLibrary::ResetFloatSpringState(FOVSpringState);
    CurrentFOV = TargetFOV;
}

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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