Lerps

A tiny lerping library encapsulates Unity's existing lerping/slerping, and adds a few QoL features such as pausing, resuming, updating, grouping, and scheduling.

Usage

To use a Lerp, you'll need to first create the lerp, group, or sequence you want to use then step it

void Update() => _alphaLerp?.Step();

Creating Lerps

// The simplest inline lerp
Lerper.Lerp(start, end, durationInMs);

// Using some handy, optional callbacks and custom easing types
Lerper.Lerp(start, end, durationInMs, easeType, UpdatePosition, FinishedMoving);
// or
Lerper.Lerp(start, end, durationInMs, onUpdate: UpdatePosition);

// Cache the lerp which stops existing lerp if present
_alphaLerp = Lerper.Lerp(start, end, durationInMs, onUpdate: newAlpha => _canvasGroup.alpha = newAlpha);

// Create a lerp from cached/shared settings
Lerper.Lerp(sharedSettings);

Functionality

// Any lerp can be reset, paused, resumed, or updated
_cachedLerp = Lerper.Lerp(startAlpha, endAlpha, fadeTime, onUpdate: newAlpha => _canvasGroup.alpha = newAlpha);
...
_cachedLerp.Suspend();
_cachedLerp.Resume();
_cachedLerp.Reset();
_cachedLerp.UpdateDuration(newTimeInMs);

Groups

You can group multiple lerps together into interact with them as one

_moveGroup = new LerpGroup(GetRandomRotationLerp(), GetFadeLerp());
_moveGroup.Add(GetSurpriseExtraLerp())

Sequences

You can also schedule lerps, so they will execute in succession. LerpDelays can also be added between lerp in LerpSequences

_schedule = new LerpSequence(() => GetLerpToTarget(leftPosition), () => GetLerpToTarget(rightPosition));
// or
_schedule = new LerpSequence(() => Lerper.Delay(timeInMs), () => MoveBackToPosition());