using System;
using SUISSEngine;
using UnityEngine;

public class UnlockVehicleShadowController : MonoBehaviour
{
	public UnlockVehicleShadowController()
	{
		Vector3 vector = new Vector3(0f, 1f);
		this._flyingHeightUnit = vector.normalized;
		
	}

	protected virtual void Awake()
	{
		this._spriteRenderer = base.gameObject.GetComponent<SpriteRenderer>();
		this._lastLocation = this._vehicle.Location;
	}

	protected virtual void Update()
	{
		if (this._vehicle != null)
		{
			base.transform.localPosition = this._flyingHeightUnit * -this._vehicle.FlyingHeight;
			this._spriteRenderer.sortingOrder = GridTile.GetSortingOrder(new GridIndex(this._vehicle.Location), new GridSize(this._sizeInTilesU, this._sizeInTilesV));
			GridPoint gridPoint = this._vehicle.Location - this._lastLocation;
			this._lastLocation = this._vehicle.Location;
			Vector2 lhs = new Vector2(gridPoint.u, gridPoint.v);
			float num = 0f;
			int num2 = 0;
			int num3 = 0;
			while (num3 < this.spriteDirections.Length && num3 < this.sprites.Length)
			{
				float num4 = Vector2.Dot(lhs, this.spriteDirections[num3]);
				if (num4 > num)
				{
					num = num4;
					num2 = num3;
				}
				num3++;
			}
			this._spriteRenderer.sprite = this.sprites[num2 * this.spriteSheetSize + (int)this.spriteAnimationIndex];
		}
	}

	[SerializeField]
	private int spriteSheetSize = 1;

	[SerializeField]
	private int _sizeInTilesU;

	[SerializeField]
	private int _sizeInTilesV;

	[SerializeField]
	private float spriteAnimationIndex;

	[SerializeField]
	private Sprite[] sprites;

	[SerializeField]
	private Vector2[] spriteDirections = new Vector2[]
	{
		new Vector2(0f, 1f),
		new Vector2(1f, 0f),
		new Vector2(0f, -1f),
		new Vector2(-1f, 0f)
	};

	[SerializeField]
	private UnlockBuildingVehicle _vehicle;

	private Vector3 _flyingHeightUnit;

	private GridPoint _lastLocation;

	private SpriteRenderer _spriteRenderer;
}