using UnityEngine;
using UnityEngine.Serialization;

namespace UltimateWater
{
	public sealed class SpritesheetAnimation : MonoBehaviour
	{
		[FormerlySerializedAs("horizontal")]
		[SerializeField]
		private int _Horizontal = 2;

		[FormerlySerializedAs("vertical")]
		[SerializeField]
		private int _Vertical = 2;

		[FormerlySerializedAs("timeStep")]
		[SerializeField]
		private float _TimeStep = 0.06f;

		[SerializeField]
		[FormerlySerializedAs("loop")]
		private bool _Loop;

		[SerializeField]
		[FormerlySerializedAs("destroyGo")]
		private bool _DestroyGo;

		private Material _Material;

		private float _NextChangeTime;

		private int _X;

		private int _Y;

		private void Start()
		{
			Renderer component = GetComponent<Renderer>();
			_Material = component.material;
			_Material.mainTextureScale = new Vector2(1f / (float)_Horizontal, 1f / (float)_Vertical);
			_Material.mainTextureOffset = new Vector2(0f, 0f);
			_NextChangeTime = Time.time + _TimeStep;
		}

		private void Update()
		{
			if (!(Time.time >= _NextChangeTime))
			{
				return;
			}
			_NextChangeTime += _TimeStep;
			if (_X == _Horizontal - 1 && _Y == _Vertical - 1)
			{
				if (!_Loop)
				{
					if (_DestroyGo)
					{
						Object.Destroy(base.gameObject);
					}
					else
					{
						base.enabled = false;
					}
					return;
				}
				_X = 0;
				_Y = 0;
			}
			else
			{
				_X++;
				if (_X >= _Horizontal)
				{
					_X = 0;
					_Y++;
				}
			}
			_Material.mainTextureOffset = new Vector2((float)_X / (float)_Horizontal, 1f - (float)(_Y + 1) / (float)_Vertical);
		}

		private void OnDestroy()
		{
			if (_Material != null)
			{
				Object.Destroy(_Material);
				_Material = null;
			}
		}
	}
}