SpriteAnimation.cs

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using System;
using UnityEngine;
 
[RequireComponent(typeof(SpriteRenderer))]
public class SpriteAnimation : MonoBehaviour
{
    [Serializable]
    public class Item
    {
        public Sprite sprite;
 
        public Vector3 pos;
 
        public float angle;
 
        public float angleRange;
    }
 
    public Item[] items;
 
    public float minInterval;
 
    public float maxInterval;
 
    public bool randomAngle;
 
    public Transform link;
 
    private SpriteRenderer sr;
 
    private int index;
 
    private float _baseAngle;
 
    private float interval;
 
    private void Awake()
    {
        sr = GetComponent<SpriteRenderer>();
        sr.sprite = items[0].sprite;
        interval = UnityEngine.Random.Range(minInterval, maxInterval);
        if (randomAngle)
        {
            _baseAngle = UnityEngine.Random.Range(0, 360);
        }
        InvokeRepeating("Refresh", 0f, interval);
    }
 
    private void Refresh()
    {
        index++;
        if (index >= items.Length)
        {
            index = 0;
        }
        Item item = items[index];
        sr.sprite = item.sprite;
        if ((bool)link)
        {
            link.localPosition = item.pos;
            link.localEulerAngles = new Vector3(0f, 0f, _baseAngle + item.angle + UnityEngine.Random.Range(0f - item.angleRange, item.angleRange));
        }
    }
}