// ***********************************************************************
// Assembly         : Game
// Author           : Kimch
// Created          : 2020-05-20
// Description      :
// Last Modified By : 
// Last Modified On : 
// ***********************************************************************
// <copyright file= "Ef_twirl" company="DefaultCompany"></copyright>
// <summary></summary>
// ***********************************************************************
using UnityEngine;

namespace G
{
	/// <summary>
	/// 旋转
	/// </summary>
	public class Ef_twirl : MonoBehaviour
	{
		private int _uvAnimationTileX = 4;

		private int _uvAnimationTileY = 4;

		private int _framesPerSecond = 180;

		private int _index;

		private int _lastIndex;

		private float _startTime;

		private int _lastFrame;

		private bool _isLoop;

		private Renderer _renderer;

		private Vector2 _size;

		private void Awake()
		{
			_renderer = this.GetComponentInChildren<Renderer>();
		}

		private void Start()
		{
			_startTime = 0f;
			_lastFrame = _uvAnimationTileX * _uvAnimationTileY;
			_renderer.enabled = false;
		}

		public void TwirlOn(int x, int y, int fps, bool loop)
		{
			_uvAnimationTileX = x;
			_uvAnimationTileY = y;
			_framesPerSecond = fps;
			_isLoop = loop;
			_startTime = 0f;
			_lastFrame = _uvAnimationTileX * _uvAnimationTileY;
			_size = new Vector2(1f / _uvAnimationTileX, 1f / _uvAnimationTileY);
			_renderer.enabled = true;
		}

		public void TwirlOff()
		{
			_renderer.enabled = false;
		}

		private void Update()
		{
			if (!_renderer.enabled)
			{
				return;
			}
			_startTime += Time.deltaTime;
			_index = (int)(_startTime * _framesPerSecond);
			if (_isLoop)
			{
				_index %= _lastFrame;
			}
			if (_index != _lastIndex)
			{
				if (_index >= _lastFrame)
				{
					_renderer.enabled = false;
					_lastIndex = -1;
				}
				int _uIndex = _index % _uvAnimationTileX;
				int _vIndex = _index / _uvAnimationTileX;

				var _offset = new Vector2(_uIndex * _size.x, 1f - _size.y - _vIndex * _size.y);
				_renderer.material.mainTextureOffset = _offset;
				_renderer.material.mainTextureScale = _size;
				_lastIndex = _index;
			}
		}
	}
}