Simple NPC Animator

using UnityEngine;

[RequireComponent(typeof(Animator))]
public class SimpleNPCAnimator : MonoBehaviour
{
    public AnimationClip Idle;
    public AnimationClip Walk;

    [Header("Random")]
    public bool PlayRandomIdle;
    public Vector2 RandomRange;
    public AnimationClip RandomIdle;


    [Header("Talk")]
    public bool PlayTalkAnimation;
    public AnimationClip OnTalkTo;

    private Animator anim;
    private AnimatorOverrideController clips;
    private float randomTimer;

    public void Awake()
    {
        anim = GetComponent<Animator>();
        clips = new AnimatorOverrideController(anim.runtimeAnimatorController);
        anim.runtimeAnimatorController = clips;

        if (Idle != null) clips["idle_1"] = Idle;
        if (Walk != null) clips["walking_1"] = Walk;
        if (OnTalkTo != null) clips["interact"] = OnTalkTo;
        if (RandomIdle != null) clips["idle_2"] = RandomIdle;

        randomTimer = RandomRange.y;
    }

    private void Update()
    {
        if (PlayRandomIdle)
        {
            if (randomTimer <= 0)
            {
                randomTimer = Random.Range(RandomRange.x, RandomRange.y);
                anim.SetTrigger("RandomIdle");
            }
            else
            {
                randomTimer -= Time.deltaTime;
            }
        }
    }

    public void OnInteract()
    {
        if (PlayTalkAnimation)
        {
            randomTimer = RandomRange.y;
            anim.SetTrigger("OnInteract");
        }
    }
}