Unity3d Script to add mechanim animation to objects based on their movement between frames

AnimationFromTransform.cs

using UnityEngine;
using System.Linq;

public class AnimationFromTransform : MonoBehaviour {

    public float MinMovementAmount = 1;
    public string MechanimMovementName = "Forward";
    private Animator _anim;
    void Start () {
        _prevPosition = Transform.position;
        _anim = GetComponentsInChildren<Animator>().FirstOrDefault();
        if(_anim == null)
        {
            _anim = GetComponent<Animator>();
        }
    }
    
    private Vector3 _prevPosition;
    void Update () {

        if (_anim != null)
        {
            Vector3 vel = (Transform.position - _prevPosition) / Time.timeScale;
            
            var movement = Mathf.Max(Mathf.Abs(vel.x), Mathf.Abs(vel.z));
            if (movement > 0f)
            {
                movement = Mathf.Max(MinMovementAmount, movement);
            }
                        
            _anim.SetFloat(MechanimMovementName, movement);

            _prevPosition = Transform.position;
        }
    }
}