Easy animator for simple sprite animations. Use best with other gist "SimpleAnimatorEditor.cs". PREVIEW: https://github.com/R3tr0BoiDX/R3tr0BoiDX/blob/main/SimpleAnimator.png

SimpleAnimator.cs

using System.Collections;
using UnityEngine;
using UnityEngine.UI;

namespace Tools {
    /// <summary>
    ///     Easy animator for simple sprite animations
    ///     Theres also a editor integration, you can find here: https://gist.github.com/R3tr0BoiDX/1607500b036531e17dadaa7e6255818d
    /// </summary>
    public class SimpleAnimator : MonoBehaviour {
        [SerializeField] private bool guiMode;
        [SerializeField] private bool startAtSpawn = true;
        [SerializeField] private bool loopAnimation;
        [SerializeField] private bool destroyAfterFinished;
        [SerializeField] private float destroyDelay;
        [SerializeField] private float timeBetweenFrames;
        [SerializeField] private Sprite[] frames;
        
        private Task animator; //TODO: Get from here: https://gist.github.com/R3tr0BoiDX/1f58d5c2285ba2daf7cd13ac7f67f95e
        private int currentSpriteIndex;
        private Image image;
        private SpriteRenderer rend;

        public Sprite[] Frames => frames;

        public float TimeBetweenFrames => timeBetweenFrames;

        public bool UseGUIMode => guiMode;

        private void Start() {
            if (guiMode) {
                image = GetComponent<Image>();
            } else {
                rend = GetComponent<SpriteRenderer>();
            }

            if (startAtSpawn) {
                animator = new Task(Animate());
            }
        }

        public void Play() {
            if (animator != null) {
                animator.Unpause();
            } else {
                animator = new Task(Animate());
            }
        }

        public void Stop() {
            if (animator != null) {
                animator.Stop();
                SetSprite(frames[0]);
            }
        }

        public void Pause() {
            animator?.Pause();
        }

        /// <summary>
        ///     Main
        /// </summary>
        /// <returns></returns>
        private IEnumerator Animate() {
            SetSprite(frames[currentSpriteIndex]);
            currentSpriteIndex++;
            yield return new WaitForSeconds(timeBetweenFrames);

            if (currentSpriteIndex < frames.Length) {
                //Start a new enumerator for next index
                animator = new Task(Animate());
            } else if (loopAnimation) {
                //Reset index and start over again
                currentSpriteIndex = 0;
                animator = new Task(Animate());
            } else if (destroyAfterFinished) {
                //Animation played and object is supposed to get destroyed
                Destroy(gameObject, destroyDelay);
            }
        }

        /// <summary>
        ///     Sets the sprite of the selected render method.
        ///     When in GUI mode, then the sprite of the Unity GUI Image component gets replaced
        /// </summary>
        /// <param name="_sprite">The new sprite, that's supposed to be shown</param>
        private void SetSprite(Sprite _sprite) {
            if (guiMode) {
                image.sprite = _sprite;
            } else {
                rend.sprite = _sprite;
            }
        }
    }
}