TouhouLS/Assets/RealCode/Animations/SimpleAnimationLoop.cs

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

public class SimpleAnimationLoop : MonoBehaviour {

  private new SpriteRenderer renderer;
  public Sprite[] sprites;
  public float frameTime = 0.75f;

  private void Awake() {
    renderer = GetComponent<SpriteRenderer>();
  }

  public void Update() {
    var frameindex = Mathf.FloorToInt(Time.time / frameTime);
    renderer.sprite = sprites[frameindex % sprites.Length];
  }

}