using HighlightPlus;
using UnityEngine;

public class OutLineMgr : Singleton<OutLineMgr>
{
   private HighlightEffect lastHighlight;  // 上一次命中的高亮组件
   protected override void OnUpdate()
   {
      base.OnUpdate();
      Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);

      if (Physics.Raycast(ray, out RaycastHit hit))
      {
         GameObject hitObj = hit.collider.gameObject;
         HighlightEffect currentHighlight = hitObj.GetComponent<HighlightEffect>();
         Debug.Log(hitObj.name);
         // 如果是新物体
         if (currentHighlight != null && currentHighlight != lastHighlight)
         {
            // 关闭上一个高亮
            if (lastHighlight != null)
            {
               lastHighlight.highlighted = false;
            }
            // 开启当前高亮
            currentHighlight.highlighted = true;
            lastHighlight = currentHighlight;
         }
         else if (currentHighlight == null && lastHighlight != null)
         {
            // 没有命中高亮物体，关闭之前的
            lastHighlight.highlighted = false;
            lastHighlight = null;
         }
      }
      else
      {
         // 如果什么都没命中，也关闭之前的
         if (lastHighlight != null)
         {
            lastHighlight.highlighted = false;
            lastHighlight = null;
         }
      }
   }
   
}