// ***********************************************************************
// Assembly         : Game
// Author           : Kimch
// Created          : 2020-09-02
// Description      :
// Last Modified By : 
// Last Modified On : 
// ***********************************************************************
// <copyright file= "Ef_blood" company="Kimch"></copyright>
// <summary></summary>
// ***********************************************************************
using UnityEngine;

namespace G
{
	/// <summary>
	/// 
	/// </summary>
	public class Ef_blood : MonoBehaviour
	{
		private float _startTime;
		private int _index;
		private int _oldIndex = -1;
		private Vector2 _size;
		private Renderer _renderer;
		private MaterialPropertyBlock _propertyBlock;

		/// <summary>
		/// 
		/// </summary>
		void UpdateUV()
		{
			_startTime += Time.deltaTime;
			_index = (int)(_startTime * 22f);

			if (_index != _oldIndex)
			{
				if (_index >= 16)
				{
					this.transform.position = Vector3.one * 3f;
					_startTime = 0f;
					_index = 0;
					this.gameObject.SetActive(false);
				}
				var offset = new Vector2(_index % 4 * _size.x, 1f - _size.y - _index / 4 * _size.y);
				_propertyBlock.SetVector("_MainTex_ST", new Vector4(_size.x, _size.y, offset.x, offset.y));
				//_renderer.material.mainTextureOffset = offset;
				//_renderer.material.mainTextureScale = _size;
				_oldIndex = _index;
			}
		}

		private void Awake()
		{
			_propertyBlock = new MaterialPropertyBlock();
			_renderer = this.GetComponent<Renderer>();
			_size = Vector2.one * 0.25f;
			this.gameObject.SetActive(false);
		}

		private void Update()
		{
			var position = this.transform.position;
			if (position.y >= 1f)
			{
				return;
			}
			UpdateUV();
		}
	}
}