GIF_Manager

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

public class GIF_Manager : MonoBehaviour
{
    //frames
    [SerializeField]
    Sprite[] frames;

    // speed
    [SerializeField]
    float framesPerSecond = 10f;

    void Start()
    {
        object[] loadedIcons = Resources.LoadAll("HeliAttackImage", typeof(Sprite));

        frames = new Sprite[loadedIcons.Length];

        for (int x = 0; x < loadedIcons.Length; x++)
        {
            frames[x] = (Sprite)loadedIcons[x];
        }
    }

    void Update()
    {
        // get index of frame
        int index = (int)(Time.time * framesPerSecond) % frames.Length;
        // check if the Texture array don't equal null
        if (frames[index] != null)
        {
            // get Renderer of this gameobject
            //this.gameObject.GetComponent<Image>().material.mainTexture = frames[index];
            gameObject.GetComponent<Image>().sprite = frames[index];
        }
    }
}