using System;
using UnityEngine;

namespace SUISSEngine
{
	public class Parallax : MonoBehaviour
	{
		private void Start()
		{
			if (!this.defaultPositionSet)
			{
				this.defaultPosition = base.transform.position;
			}
		}

		private void LateUpdate()
		{
			Camera islandCamera = this.island.islandCamera;
			Bounds islandWorldBounds = this.island.islandWorldBounds;
			Vector2 vector;
			vector.y = islandCamera.orthographicSize;
			if (vector.y > islandWorldBounds.extents.y)
			{
				vector.y = islandWorldBounds.extents.y;
			}
			vector.x = vector.y * islandCamera.aspect;
			Vector3 position = islandCamera.transform.position;
			position.x += (this.pivot.x - 0.5f) * 2f * vector.x;
			position.y += (this.pivot.y - 0.5f) * 2f * vector.y;
			Vector2 vector2;
			vector2.x = (this._defaultPosition.x - this.pivot.x * islandWorldBounds.extents.x * 2f) * (1f - this.speed.x);
			vector2.y = (this._defaultPosition.y - this.pivot.y * islandWorldBounds.extents.y * 2f) * (1f - this.speed.y);
			Vector3 position2;
			position2.x = this._defaultPosition.x + (position.x - this._defaultPosition.x) * (1f - this.speed.x) + vector2.x;
			position2.y = this._defaultPosition.y + (position.y - this._defaultPosition.y) * (1f - this.speed.y) + vector2.y;
			position2.z = this._defaultPosition.z;
			base.transform.position = position2;
		}

		public Vector3 defaultPosition
		{
			get
			{
				return this._defaultPosition;
			}
			set
			{
				this._defaultPosition = value;
				this.defaultPositionSet = true;
			}
		}

		public Vector2 speed = new Vector2(1f, 1f);

		public Vector2 pivot = new Vector2(0.5f, 0.5f);

		[ParentReference]
		public IsometricIsland island;

		private bool defaultPositionSet;

		private Vector3 _defaultPosition = Vector3.zero;
	}
}