（转）Unity 导出XML配置文件，动态加载场景

参考：http://www.xuanyusong.com/archives/1919

http://www.omuying.com/article/48.aspx

主要功能：

1.导出场景的配置文件

2.导出当前场景中资源的AssetBundle

3.客户端从服务器获取配置文件

4.解析配置文件，并根据配置文件下载AssetBundle

5.实例化并还原场景

1.场景设置：将需要导出的场景资源设置为预设

2.将场景配置导出为XML文件

[code]csharpcode：

using UnityEngine;

using UnityEditor;

using System.Collections;

using System.Collections.Generic;

using System.Xml;

using System.IO;

using System.Text;

public class ExportSceneToXml : Editor

{

	[MenuItem("Assets/Export Scene To XML From Selection")]

	static void ExportXML()

	{

		string path = EditorUtility.SaveFilePanel ("Save Resource", "", "New Resource", "xml");

		if (path.Length != 0)

		{

			Object[] selectedAssetList = Selection.GetFiltered (typeof(Object), SelectionMode.DeepAssets);

			//遍历所有的游戏对象

			foreach (Object selectObject in selectedAssetList)

			{

				// 场景名称

				string sceneName = selectObject.name;

				// 场景路径

				string scenePath = AssetDatabase.GetAssetPath(selectObject);

				// 场景文件

				//string xmlPath = path; //Application.dataPath + "/AssetBundles/Prefab/Scenes/" + sceneName + ".xml";

				// 如果存在场景文件，删除

				if(File.Exists(path)) File.Delete(path);

				// 打开这个关卡

				EditorApplication.OpenScene(scenePath);

				XmlDocument xmlDocument = new XmlDocument();

				// 创建XML属性

				XmlDeclaration xmlDeclaration = xmlDocument.CreateXmlDeclaration("1.0", "utf-8", null);

				xmlDocument.AppendChild(xmlDeclaration);

				// 创建XML根标志

				XmlElement rootXmlElement = xmlDocument.CreateElement("root");

				// 创建场景标志

				XmlElement sceneXmlElement = xmlDocument.CreateElement("scene");

				sceneXmlElement.SetAttribute("sceneName", sceneName);

				foreach (GameObject sceneObject in Object.FindObjectsOfType(typeof(GameObject)))

				{

					// 如果对象是激活状态

					if (sceneObject.transform.parent == null && sceneObject.activeSelf)

					{

						// 判断是否是预设

						if(PrefabUtility.GetPrefabType(sceneObject) == PrefabType.PrefabInstance)

						{

							// 获取引用预设对象

							Object prefabObject = EditorUtility.GetPrefabParent(sceneObject);

							if(prefabObject != null)

							{

								XmlElement gameObjectXmlElement = xmlDocument.CreateElement("gameObject");

								gameObjectXmlElement.SetAttribute("objectName", sceneObject.name);

								gameObjectXmlElement.SetAttribute("objectAssetURL",  prefabObject.name);

								XmlElement transformXmlElement = xmlDocument.CreateElement("transform");

								// 位置信息

								XmlElement positionXmlElement = xmlDocument.CreateElement("position");

								positionXmlElement.SetAttribute("x", sceneObject.transform.position.x.ToString());

								positionXmlElement.SetAttribute("y", sceneObject.transform.position.y.ToString());

								positionXmlElement.SetAttribute("z", sceneObject.transform.position.z.ToString());

								// 旋转信息

								XmlElement rotationXmlElement = xmlDocument.CreateElement("rotation");

								rotationXmlElement.SetAttribute("x", sceneObject.transform.rotation.eulerAngles.x.ToString());

								rotationXmlElement.SetAttribute("y", sceneObject.transform.rotation.eulerAngles.y.ToString());

								rotationXmlElement.SetAttribute("z", sceneObject.transform.rotation.eulerAngles.z.ToString());

								// 缩放信息

								XmlElement scaleXmlElement = xmlDocument.CreateElement("scale");

								scaleXmlElement.SetAttribute("x", sceneObject.transform.localScale.x.ToString());

								scaleXmlElement.SetAttribute("y", sceneObject.transform.localScale.y.ToString());

								scaleXmlElement.SetAttribute("z", sceneObject.transform.localScale.z.ToString());

								transformXmlElement.AppendChild(positionXmlElement);

								transformXmlElement.AppendChild(rotationXmlElement);

								transformXmlElement.AppendChild(scaleXmlElement);    

								gameObjectXmlElement.AppendChild(transformXmlElement);

								sceneXmlElement.AppendChild(gameObjectXmlElement);

							}

						}

					}

				}

				rootXmlElement.AppendChild(sceneXmlElement);

				xmlDocument.AppendChild(rootXmlElement);

				// 保存场景数据

				xmlDocument.Save(path);

				// 刷新Project视图

				AssetDatabase.Refresh();

			}

		}

	}

}

导出结果参考：

[code]xmlcode：

<?xml version="1.0" encoding="utf-8"?>

<root>

  <scene sceneName="DongTaiJiaZaiTest">

    <gameObject objectName="Box" objectAssetURL="Box">

      <transform>

        <position x="-1.293883" y="-0.07" z="1.41" />

        <rotation x="270" y="0" z="0" />

        <scale x="1" y="1" z="1" />

      </transform>

    </gameObject>

    <gameObject objectName="meinv" objectAssetURL="meinv">

      <transform>

        <position x="-1.75" y="1.36" z="11.28" />

        <rotation x="0" y="97.43578" z="0" />

        <scale x="1.09" y="1.09" z="1.09" />

      </transform>

    </gameObject>

    <gameObject objectName="Envirment" objectAssetURL="Envirment">

      <transform>

        <position x="0" y="0" z="0" />

        <rotation x="0" y="0" z="0" />

        <scale x="1" y="1" z="1" />

      </transform>

    </gameObject>

    <gameObject objectName="RigidBodyFPSController" objectAssetURL="RigidBodyFPSController">

      <transform>

        <position x="4.89" y="1.46" z="0.87" />

        <rotation x="0" y="253.2478" z="0" />

        <scale x="1" y="1" z="1" />

      </transform>

    </gameObject>

    <gameObject objectName="Sphere" objectAssetURL="Sphere">

      <transform>

        <position x="-2.63" y="3.28" z="-3.95" />

        <rotation x="270" y="0" z="0" />

        <scale x="1" y="1" z="1" />

      </transform>

    </gameObject>

  </scene>

</root>

3.将预设打包为AssetBundle，并上传到服务器

打包Assetbundle编辑器脚本：

[code]csharpcode：

using UnityEngine;

using System.Collections;

using UnityEditor;

public class Test : Editor

{

    [MenuItem("Custom Editor/Create AssetBunldes Main For Android")]

    static void CreateAssetBunldesMainForAndroid()

    {

        //获取在Project视图中选择的所有游戏对象

        Object[] SelectedAsset = Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets);

        //遍历所有的游戏对象

        foreach (Object obj in SelectedAsset)

        {

            //本地测试：建议最后将Assetbundle放在StreamingAssets文件夹下，如果没有就创建一个，因为移动平台下只能读取这个路径

            //StreamingAssets是只读路径，不能写入

            //服务器下载：就不需要放在这里，服务器上客户端用www类进行下载。

            string targetPath = Application.dataPath + "/StreamingAssets/" + obj.name + "Android" + ".assetbundle";

            if (BuildPipeline.BuildAssetBundle(obj, null, targetPath, BuildAssetBundleOptions.CollectDependencies, BuildTarget.Android))

            {

                Debug.Log(obj.name + "资源打包成功");

            }

            else

            {

                Debug.Log(obj.name + "资源打包失败");

            }

        }

        //刷新编辑器

        AssetDatabase.Refresh();

    }

    [MenuItem("Custom Editor/Create AssetBunldes Main For iPhone")]

    static void CreateAssetBunldesMainForiPhone()

    {

        //获取在Project视图中选择的所有游戏对象

        Object[] SelectedAsset = Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets);

        //遍历所有的游戏对象

        foreach (Object obj in SelectedAsset)

        {

            string targetPath = Application.dataPath + "/StreamingAssets/" + obj.name + "iPhone" + ".assetbundle";

            if (BuildPipeline.BuildAssetBundle(obj, null, targetPath, BuildAssetBundleOptions.CollectDependencies, BuildTarget.iPhone))

            {

                Debug.Log(obj.name + "资源打包成功");

            }

            else

            {

                Debug.Log(obj.name + "资源打包失败");

            }

        }

        //刷新编辑器

        AssetDatabase.Refresh();

    }

    [MenuItem("Custom Editor/Create AssetBunldes ALL For Android")]

    static void CreateAssetBunldesALLForAndroid()

    {

        Caching.CleanCache();

        string Path = Application.dataPath + "/StreamingAssets/ALLAndroid.assetbundle";

        Object[] SelectedAsset = Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets);

        foreach (Object obj in SelectedAsset)

        {

            Debug.Log("Create AssetBunldes name :" + obj);

        }

        //这里注意第二个参数就行

        if (BuildPipeline.BuildAssetBundle(null, SelectedAsset, Path, BuildAssetBundleOptions.CollectDependencies, BuildTarget.Android))

        {

            AssetDatabase.Refresh();

        }

        else

        {

        }

    }

    [MenuItem("Custom Editor/Create AssetBunldes ALL For iPhone")]

    static void CreateAssetBunldesALLForiPhone()

    {

        Caching.CleanCache();

        string Path = Application.dataPath + "/StreamingAssets/ALLiPhone.assetbundle";

        Object[] SelectedAsset = Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets);

        foreach (Object obj in SelectedAsset)

        {

            Debug.Log("Create AssetBunldes name :" + obj);

        }

        //这里注意第二个参数就行

        if (BuildPipeline.BuildAssetBundle(null, SelectedAsset, Path, BuildAssetBundleOptions.CollectDependencies, BuildTarget.iPhone))

        {

            AssetDatabase.Refresh();

        }

        else

        {

        }

    }

    [MenuItem("Custom Editor/Create Scene For Android")]

    static void CreateSceneALLForAndroid()

    {

        Caching.CleanCache();

        Object[] SelectedAsset = Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets);

        foreach (Object obj in SelectedAsset)

        {

            string Path = Application.dataPath + "/StreamingAssets/" + obj.name + "Android" + ".unity3d";

            string[] levels = { @"Assets/Scenes/ExportedScene/" + obj.name + ".unity" };

            BuildPipeline.BuildPlayer(levels, Path, BuildTarget.Android, BuildOptions.BuildAdditionalStreamedScenes);

            Debug.Log("Craete Scene" + Path + "Complete!!");

        }

        AssetDatabase.Refresh();

    }

    [MenuItem("Custom Editor/Create Scene For iPhone")]

    static void CreateSceneALLForiPhone()

    {

        Caching.CleanCache();

        Object[] SelectedAsset = Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets);

        foreach (Object obj in SelectedAsset)

        {

            string Path = Application.dataPath + "/StreamingAssets/" + obj.name + "iPhone" + ".unity3d";

            string[] levels = { @"Assets/Scenes/ExportedScene/" + obj.name + ".unity" };

            BuildPipeline.BuildPlayer(levels, Path, BuildTarget.iPhone, BuildOptions.BuildAdditionalStreamedScenes);

            Debug.Log("Craete Scene" + Path + "Complete!!");

        }

        AssetDatabase.Refresh();

    }

}

4.将服务器的路径修改到XML配置文件中，并将XML上传到服务器

5.在Unity客户端下载XML并解析，下载并实例化对应的资源

[code]csharpcode：

using UnityEngine;

using System.Collections;

using System.IO;

using System.Collections.Generic;

using System.Xml;

public class GetXMLDoc : MonoBehaviour

{

	string filePath;

	public string XMLDocURL = "http://************.xml";

	void Awake ()

	{

		filePath = Application.persistentDataPath + "/XMLDoc1028.xml";

		if (File.Exists (filePath)) {

			File.Delete (filePath);

		}

		WWW www = new WWW (XMLDocURL);

		StartCoroutine (DownloadXMLDoc (www));

	}

	IEnumerator DownloadXMLDoc (WWW www)

	{

		yield return www;

		if (www.isDone) {

			Debug.Log ("WWW is done");

			byte[] bts = www.bytes;

			int length = bts.Length;

			CreateXMLDoc (filePath, bts, length);

		}

	}

	void CreateXMLDoc (string path, byte[] info, int lenth)

	{

		Debug.Log ("Start to create XML");

		Stream sw;

		FileInfo t = new FileInfo (path);

		if (!t.Exists) {

			sw = t.Create ();

		} else {

			return;

		}

		sw.Write (info, 0, lenth);

		sw.Close ();

		sw.Dispose ();

		Debug.Log ("XML create sucess");

		LoadScene ();

//        下载完毕之后可以读取并进行实例化了

	}

	void LoadScene ()

	{

		Debug.Log ("开始加载");

		if (File.Exists (filePath)) {

			XmlDocument xmlDoc = new XmlDocument ();

			xmlDoc.Load (filePath);

			XmlNodeList nodeList = xmlDoc.SelectSingleNode ("root").ChildNodes;

			foreach (XmlElement scene  in nodeList) {

				//因为我的XML是把所有游戏对象全部导出， 所以这里判断一下只解析需要的场景中的游戏对象

				//JSON和它的原理类似

//                if (!scene.GetAttribute("name").Equals("Assets/StarTrooper.unity"))

//                {

//                    continue;

//                }

				foreach (XmlElement gameObjects in scene.ChildNodes) {

//                    取得资源地址

					string assetRUL = gameObjects.GetAttribute ("objectAssetURL");

					string assetName = gameObjects.GetAttribute ("objectName");

					Vector3 pos = Vector3.zero;

					Vector3 rot = Vector3.zero;

					Vector3 sca = Vector3.zero;

					foreach (XmlElement transform in gameObjects.ChildNodes) {

						foreach (XmlElement prs in transform.ChildNodes) {

							if (prs.Name == "position") {

								pos.x = float.Parse(prs.GetAttribute("x"));

								pos.y = float.Parse(prs.GetAttribute("y"));

								pos.z = float.Parse(prs.GetAttribute("z"));

//								foreach (XmlElement position in prs.ChildNodes) {

//									switch (position.Name) {

//									case "x":

//										pos.x = float.Parse (position.InnerText);

//										break;

//									case "y":

//										pos.y = float.Parse (position.InnerText);

//										break;

//									case "z":

//										pos.z = float.Parse (position.InnerText);

//										break;

//									}

//								}

							} else if (prs.Name == "rotation") {

								rot.x = float.Parse (prs.GetAttribute("x"));

								rot.y = float.Parse(prs.GetAttribute("y"));

								rot.z = float.Parse(prs.GetAttribute("z"));

//								foreach (XmlElement rotation in prs.ChildNodes) {

//									switch (rotation.Name) {

//									case "x":

//										rot.x = float.Parse (rotation.InnerText);

//										break;

//									case "y":

//										rot.y = float.Parse (rotation.InnerText);

//										break;

//									case "z":

//										rot.z = float.Parse (rotation.InnerText);

//										break;

//									}

//								}

							} else if (prs.Name == "scale") {

								sca.x = float.Parse (prs.GetAttribute("x"));

								sca.y = float.Parse(prs.GetAttribute("y"));

								sca.z = float.Parse(prs.GetAttribute("z"));

//								foreach (XmlElement scale in prs.ChildNodes) {

//									switch (scale.Name) {

//									case "x":

//										sca.x = float.Parse (scale.InnerText);

//										break;

//									case "y":

//										sca.y = float.Parse (scale.InnerText);

//										break;

//									case "z":

//										sca.z = float.Parse (scale.InnerText);

//										break;

//									}

//								}

							}

						}

						Debug.Log ("准备下载：" + assetRUL);

//                        开始下载并实例化对象

						Debug.Log (assetName + ":pos=" + pos);

						Debug.Log (assetName + ":rot=" + pos);

						Debug.Log (assetName + ":sca=" + pos);

						StartCoroutine (DownloadAsset (new WWW (assetRUL), pos, rot, sca));

						//拿到 旋转 缩放 平移 以后克隆新游戏对象

//                        GameObject ob = (GameObject)Instantiate(Resources.Load(asset), pos, Quaternion.Euler(rot));

//                        ob.transform.localScale = sca;

					}

				}

			}

		}

	}

	IEnumerator DownloadAsset (WWW www, Vector3 pos, Vector3 rot, Vector3 sca)

	{

		yield return www;

		if (www.isDone) {

//            yield return Instantiate(www.assetBundle.mainAsset,pos,pos,Quaternion.Euler(rot));

			GameObject ob = (GameObject)Instantiate (www.assetBundle.mainAsset, pos, Quaternion.Euler (rot));

			ob.transform.localScale = sca;

			www.assetBundle.Unload (false);

		}

	}

}

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（转）Unity 导出XML配置文件，动态加载场景

[code]csharpcode：

[code]xmlcode：

[code]csharpcode：

[code]csharpcode：

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