using UnityEngine;

namespace TowerDefense.UI.HUD
{
	/// <summary>
	/// States the placement tile can be in
	/// </summary>
	public enum PlacementTileState
	{
		Filled,
		Empty
	}
	
	/// <summary>
	/// Simple class to illustrate tile placement locations
	/// 主要功能是在场景内能够表示可以放置Tower的位置
	/// </summary>
	public class PlacementTile : MonoBehaviour
	{
		/// <summary>
		/// Material to use when this tile is empty
		/// </summary>
		public Material emptyMaterial;
		/// <summary>
		/// Material to use when this tile is filled
		/// </summary>
		public Material filledMaterial;
		/// <summary>
		/// The renderer whose material we're changing
		/// </summary>
		public Renderer tileRenderer;

		/// <summary>
		/// 等待购买的材质
		/// </summary>
		public Material waitBuyMat;

		/// <summary>
		/// 已开放的材质.
		/// </summary>
		public Material openMat;

		/// <summary>
		/// 塔位已被破坏的材质
		/// </summary>
		public Material destroyedMat;

		/// <summary>
		/// Update the state of this placement tile
		/// </summary>
		public void SetState(PlacementTileState newState)
		{
			switch (newState)
			{
				case PlacementTileState.Filled:
					if (tileRenderer != null && filledMaterial != null)
					{
						tileRenderer.sharedMaterial = filledMaterial;
					}
					break;
				case PlacementTileState.Empty:
					if (tileRenderer != null && emptyMaterial != null)
					{
						tileRenderer.sharedMaterial = emptyMaterial;
					}
					break;
			}
		}


		/// <summary>
		/// 根据传入的参数来设置当前Grid对应的显示信息
		/// WORK START: 从这个函数开始，替换相关的显示效果
		/// </summary>
		/// <param name="newtype"></param>
		public void SetTileType( PlacementGridType newtype)
        {
			switch( newtype)
            {
                case PlacementGridType.EGridWaitBuy:
					if (tileRenderer != null && waitBuyMat != null)
						tileRenderer.sharedMaterial = waitBuyMat;
					break;
				case PlacementGridType.EGridOpen:
					if (tileRenderer != null && openMat != null)
						tileRenderer.sharedMaterial = openMat;
					break;
				case PlacementGridType.EGridDestroyed:
					if (tileRenderer != null && destroyedMat != null)
						tileRenderer.sharedMaterial = destroyedMat;
					break;
            }
        }
	}
}