using UnityEngine;

namespace BinxForge.CoinRoom
{
    [RequireComponent(typeof(SpriteRenderer))]
    public sealed class IdleSprite : MonoBehaviour
    {
        public Texture2D sheet;
        public CoinRoom room;
        private Sprite[] frames;
        private SpriteRenderer view;
        private float phase;
        private void Awake()
        {
            view = GetComponent<SpriteRenderer>();
            if (sheet == null || sheet.width != 160 || sheet.height != 32) { Debug.LogError("Use the included 160x32 five-frame idle sheet.", this); return; }
            frames = new Sprite[5];
            for (int i = 0; i < frames.Length; i++) frames[i] = Sprite.Create(sheet, new Rect(i * 32, 0, 32, 32), new Vector2(0.5f, 0.5f), 32);
            view.color = Color.white;
            view.sprite = frames[0];
        }
        private void Update()
        {
            if (frames == null || room == null || !room.Active) return;
            phase = (phase + Time.deltaTime * 10) % frames.Length;
            view.sprite = frames[(int)phase];
        }
        private void OnDestroy()
        {
            if (frames != null) foreach (var frame in frames) if (frame != null) Destroy(frame);
        }
    }
}