Custom spline animation component for Unity (replacement for Spline Animate)

MoveAlongSpline.cs

using UnityEngine;
using UnityEngine.Splines;

public class MoveAlongSpline : MonoBehaviour
{
    public SplineContainer spline;
    float moveSpeed = 0f;

    [SerializeField]
    private float rotationLerpSpeed = 20f;
    private float currentDistance = 0f;
    private bool playing = false;

    public void Play()
    {
        playing = true;
    }

    public float Speed() => moveSpeed;

    public void SetSpeed(float value)
    {
        moveSpeed = value;
    }

    void Update()
    {
        if (!playing) { return; }

        Vector3 targetPosition = spline.EvaluatePosition(currentDistance);

        transform.position = Vector3.MoveTowards(transform.position, targetPosition, moveSpeed * Time.deltaTime);

        Vector3 targetDirection = spline.EvaluateTangent(currentDistance);
        if (targetDirection != Vector3.zero)
        {
            Quaternion targetRotation = Quaternion.LookRotation(targetDirection, transform.up);
            transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, rotationLerpSpeed * Time.deltaTime);
        }

        if (currentDistance >= 1f)
        {
            currentDistance = 1f;
            playing = false;
        }
        else
        {
            float splineLength = spline.CalculateLength();
            float movement = moveSpeed * Time.deltaTime / splineLength;
            currentDistance += movement;
        }
    }
}