using UnityEngine;
using AX.MessageSystem;

public class ObjHideOrShow : MonoBehaviour
{
    private int mCurrentLayer;//用来记录切层到Hidden前的当前层。                              

    private void Start()
    {
        mCurrentLayer = gameObject.layer;

        if (GameObject.Find("Main Camera").GetComponent<CameraManager>().viewType == CameraViewState.PlanView )
        {
            ObjHidden(null);
        }
    }
    void OnEnable()
    {
        MessageDispatcher.AddListener("OBJ_HIDDEN", ObjHidden);
        MessageDispatcher.AddListener("OBJ_SHOWED", ObjShowed);
    }
    void OnDisable()
    {
        MessageDispatcher.RemoveListener("OBJ_HIDDEN", ObjHidden);
        MessageDispatcher.RemoveListener("OBJ_SHOWED", ObjShowed);
    }
    void OnDestroy()
    {
        MessageDispatcher.RemoveListener("OBJ_HIDDEN", ObjHidden);
        MessageDispatcher.RemoveListener("OBJ_SHOWED", ObjShowed);
    }

    /// <summary>
    /// 隐藏显示物体
    /// </summary>
    /// <param name="obj"></param>
    private void ObjHidden(IMessage obj)
    {
        if (gameObject.layer != LayerMask.NameToLayer("Hidden"))
        {            
            int layer = LayerMask.NameToLayer("Hidden");
            SetLayerRecursively(gameObject, layer);
        }
            
    }


    /// <summary>
    /// 显示隐藏物体
    /// </summary>
    /// <param name="obj"></param>
    private void ObjShowed(IMessage obj)
    {        
        if (gameObject.layer == LayerMask.NameToLayer("Hidden"))
        {
            SetLayerRecursively(gameObject, mCurrentLayer);
        }
                   
    }


    /// <summary>
    /// 设置物体新的层
    /// </summary>
    /// <param name="obj">设置蹭的物体</param>
    /// <param name="newLayer">目标层</param>
    private void SetLayerRecursively(GameObject obj, int newLayer)
    {
        obj.layer = newLayer;
        foreach (Transform child in obj.transform)
        {
            if (child.name == "Quad")
            {
                return;
            }
            else
            {
                SetLayerRecursively(child.gameObject, newLayer);
            }            
        }
    }
}