unity 解析tmx

using UnityEngine;
using System.Collections;
using System.IO;
using System.Xml;

public class xml : MonoBehaviour {

    XmlDocument xmlDoc = new XmlDocument ();


    void Start ()
    {

        XmlDocument xmlDoc = new XmlDocument ();
        xmlDoc.Load ("Assets/Round1.xml");
        XmlNode mapNode = xmlDoc.SelectSingleNode ("map");

        // map 
        foreach (XmlNode layerNode in mapNode.ChildNodes) 
        {
            //tileset layer
            if (layerNode.Name == "layer") 
            {
                XmlElement layerElement = (XmlElement)layerNode;
                Debug.Log (layerElement.GetAttribute ("width").ToString());
                Debug.Log (layerElement.GetAttribute ("height").ToString());
                
                //data
                foreach (XmlNode dataNode in ((XmlElement)layerNode).ChildNodes) 
                {
                    //tile
                    foreach (XmlNode tileNode in ((XmlElement)dataNode).ChildNodes) {
                        XmlElement tileElement = (XmlElement)tileNode;
                        Debug.Log (tileElement.GetAttribute ("gid").ToString ());

                    }
                }
            }
        }

    }


}