unity3D技术之导出Unity场景的所有游戏对象信息
导出Unity场景的所有游戏对象信息，一种是XML一种是JSON。本篇文章我们把游戏场景中游戏对象的、旋转、缩放、平移与Prefab的名称导出在XML与JSON中。然后解析刚刚导出的XML或JSON通过脚本把导出的游戏场景还原。在Unity官网上下载随便下载一个demo Project，如下图所示这是我刚刚在官网上下载的一个范例程序。
接着将层次视图中的所有游戏对象都封装成Prefab保存在资源路径中，这里注意一下如果你的Prefab绑定的脚本中有public Object 的话，需要在代码中改一下。。用Find() FindTag()这类方法在脚本中Awake()方法中来拿，不然Prefab动态加载的时候无法赋值的，如下图所示，我把封装的Prefab对象都放在了Resources/Prefab文件夹下。
OK，现在我们就需要编写我们的导出工具、在Project视图中创建Editor文件夹，接着创建脚本MyEditor 。如下图所示。
因为编辑的游戏场景数量比较多，导出的时候我们需要遍历所有的游戏场景，一个一个的读取场景信息。然后取得游戏场景中所有游戏对象的Prefab的名称旋转缩放平移。有关XML的使用请大家看我的上一篇文章： Unity3D研究院之使用C#合成解析XML与JSON （四十一）代码中我只注释重点的部分，嘿嘿。
MyEditor.cs
C#
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31 using UnityEngine;
using System.Collections;
using UnityEditor;
using System.Collections.Generic;
using System.Xml;
using System.IO;
using System.Text;
using LitJson;
public class MyEditor : Editor
{
//将所有游戏场景导出为XML格式
[MenuItem ("GameObject/ExportXML")]
static void ExportXML ()
{
string filepath = Application.dataPath + @"/StreamingAssets/my.xml";
if(!File.Exists (filepath))
{
File.Delete(filepath);
}
XmlDocument xmlDoc = new XmlDocument();
XmlElement root = xmlDoc.CreateElement("gameObjects");
//遍历所有的游戏场景
foreach (UnityEditor.EditorBuildSettingsScene S in UnityEditor.EditorBuildSettings.scenes) {
//当关卡启用
if (S.enabled)
{
//得到关卡的名称
string name = S.path;
//打开这个关卡
EditorApplication.OpenScene(name);
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75 XmlElement scenes = xmlDoc.CreateElement("scenes");
scenes.SetAttribute("name",name);
foreach (GameObject obj in Object.FindObjectsOfType(typeof(GameObject))) {
if (obj.transform.parent == null)
{
XmlElement gameObject = xmlDoc.CreateElement("gameObjects"); gameObject.SetAttribute("name",https://www.360docs.net/doc/3f13291443.html,);
gameObject.SetAttribute("asset",https://www.360docs.net/doc/3f13291443.html, + ".prefab");
XmlElement transform = xmlDoc.CreateElement("transform"); XmlElement position = xmlDoc.CreateElement("position");
XmlElement position_x = xmlDoc.CreateElement("x");
position_x.InnerText = obj.transform.position.x+"";
XmlElement position_y = xmlDoc.CreateElement("y");
position_y.InnerText = obj.transform.position.y+"";
XmlElement position_z = xmlDoc.CreateElement("z");
position_z.InnerText = obj.transform.position.z+"";
position.AppendChild(position_x);
position.AppendChild(position_y);
position.AppendChild(position_z);
XmlElement rotation = xmlDoc.CreateElement("rotation");
XmlElement rotation_x = xmlDoc.CreateElement("x");
rotation_x.InnerText = obj.transform.rotation.eulerAngles.x+""; XmlElement rotation_y = xmlDoc.CreateElement("y");
rotation_y.InnerText = obj.transform.rotation.eulerAngles.y+""; XmlElement rotation_z = xmlDoc.CreateElement("z");
rotation_z.InnerText = obj.transform.rotation.eulerAngles.z+"";
rotation.AppendChild(rotation_x);
rotation.AppendChild(rotation_y);
rotation.AppendChild(rotation_z);
XmlElement scale = xmlDoc.CreateElement("scale");
XmlElement scale_x = xmlDoc.CreateElement("x");
scale_x.InnerText = obj.transform.localScale.x+"";
XmlElement scale_y = xmlDoc.CreateElement("y");
scale_y.InnerText = obj.transform.localScale.y+"";
XmlElement scale_z = xmlDoc.CreateElement("z");
scale_z.InnerText = obj.transform.localScale.z+"";
scale.AppendChild(scale_x);
scale.AppendChild(scale_y);
scale.AppendChild(scale_z);
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99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 transform.AppendChild(position);
transform.AppendChild(rotation);
transform.AppendChild(scale);
gameObject.AppendChild(transform);
scenes.AppendChild(gameObject);
root.AppendChild(scenes);
xmlDoc.AppendChild(root);
xmlDoc.Save(filepath);
}
}
}
}
//刷新Project视图，不然需要手动刷新哦
AssetDatabase.Refresh();
}
//将所有游戏场景导出为JSON格式
[MenuItem ("GameObject/ExportJSON")]
static void ExportJSON ()
{
string filepath = Application.dataPath + @"/StreamingAssets/json.txt";
FileInfo t = new FileInfo(filepath);
if(!File.Exists (filepath))
{
File.Delete(filepath);
}
StreamWriter sw = t.CreateText();
StringBuilder sb = new StringBuilder ();
JsonWriter writer = new JsonWriter (sb);
writer.WriteObjectStart ();
writer.WritePropertyName ("GameObjects");
writer.WriteArrayStart ();
foreach (UnityEditor.EditorBuildSettingsScene S in UnityEditor.EditorBuildSettings.scenes) {
if (S.enabled)
{
string name = S.path;
EditorApplication.OpenScene(name);
writer.WriteObjectStart();
120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 writer.WritePropertyName("scenes");
writer.WriteArrayStart ();
writer.WriteObjectStart();
writer.WritePropertyName("name");
writer.Write(name);
writer.WritePropertyName("gameObject");
writer.WriteArrayStart ();
foreach (GameObject obj in Object.FindObjectsOfType(typeof(GameObject))) {
if (obj.transform.parent == null)
{
writer.WriteObjectStart();
writer.WritePropertyName("name");
writer.Write(https://www.360docs.net/doc/3f13291443.html,);
writer.WritePropertyName("position");
writer.WriteArrayStart ();
writer.WriteObjectStart();
writer.WritePropertyName("x");
writer.Write(obj.transform.position.x.ToString("F5"));
writer.WritePropertyName("y");
writer.Write(obj.transform.position.y.ToString("F5"));
writer.WritePropertyName("z");
writer.Write(obj.transform.position.z.ToString("F5"));
writer.WriteObjectEnd();
writer.WriteArrayEnd();
writer.WritePropertyName("rotation");
writer.WriteArrayStart ();
writer.WriteObjectStart();
writer.WritePropertyName("x");
writer.Write(obj.transform.rotation.eulerAngles.x.ToString("F5"));
writer.WritePropertyName("y");
writer.Write(obj.transform.rotation.eulerAngles.y.ToString("F5"));
writer.WritePropertyName("z");
writer.Write(obj.transform.rotation.eulerAngles.z.ToString("F5"));
writer.WriteObjectEnd();
writer.WriteArrayEnd();
writer.WritePropertyName("scale");
writer.WriteArrayStart ();
writer.WriteObjectStart();
writer.WritePropertyName("x");
164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 writer.Write(obj.transform.localScale.x.ToString("F5"));
writer.WritePropertyName("y");
writer.Write(obj.transform.localScale.y.ToString("F5"));
writer.WritePropertyName("z");
writer.Write(obj.transform.localScale.z.ToString("F5"));
writer.WriteObjectEnd();
writer.WriteArrayEnd();
writer.WriteObjectEnd();
}
}
writer.WriteArrayEnd();
writer.WriteObjectEnd();
writer.WriteArrayEnd();
writer.WriteObjectEnd();
}
}
writer.WriteArrayEnd();
writer.WriteObjectEnd ();
sw.WriteLine(sb.ToString());
sw.Close();
sw.Dispose();
AssetDatabase.Refresh();
}
}
此时我们就可以导出游戏场景的信息拉，注意游戏场景的需要现在Project Setting 中
注册。点击GameObject – > Export XML 和GameObject – > ExportJson 菜单项即可开始生成。
如下图所示，场景导出完毕后，会将xml 与Json 文件保存在StreamingAssets路径下，放在这里的原因是方便移动平台移植，因为它们属于二进制文件，移动平台在读取二进制文件的路径是不一样的。一定要放在这里喔。
接着，我继续创建两个游戏场景，一个用来解析XML的场景，一个用来解析JSON的场景。XML场景中，创建一个空的游戏对象，把XML.cs挂上去。
C#
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17 using UnityEngine;
using System.Collections;
using System.Xml;
using System.IO;
public class XML : MonoBehaviour {
// Use this for initialization
void Start ()
{
//电脑和iphong上的路径是不一样的，这里用标签判断一下。
#if UNITY_EDITOR
string filepath = Application.dataPath +"/StreamingAssets"+"/my.xml"; #elif UNITY_IPHONE
string filepath = Application.dataPath +"/Raw"+"/my.xml";
#endif
//如果文件存在话开始解析。
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61 if(File.Exists (filepath))
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(filepath);
XmlNodeList nodeList=xmlDoc.SelectSingleNode("gameObjects").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)
{
string asset = "Prefab/" + gameObjects.GetAttribute("name");
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(https://www.360docs.net/doc/3f13291443.html, == "position")
{
foreach(XmlElement position in prs.ChildNodes)
{
switch(https://www.360docs.net/doc/3f13291443.html,)
{
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(https://www.360docs.net/doc/3f13291443.html, == "rotation")
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99 100 101 102 103 104 105 foreach(XmlElement rotation in prs.ChildNodes)
{
switch(https://www.360docs.net/doc/3f13291443.html,)
{
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(https://www.360docs.net/doc/3f13291443.html, == "scale")
{
foreach(XmlElement scale in prs.ChildNodes)
{
switch(https://www.360docs.net/doc/3f13291443.html,)
{
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;
}
}
}
}
//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;
}
}
}
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// Update is called once per frame
void Update ()
{
}
void OnGUI()
{
if(GUI.Button(new Rect(0,0,200,200),"XML WORLD")) {
Application.LoadLevel("JSONScene");
}
}
}
接着JSON场景中，创建一个空的游戏对象，把JSON.cs挂上去。C#
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22 using UnityEngine;
using System.Collections;
using System.IO;
using LitJson;
public class JSON : MonoBehaviour {
// Use this for initialization
void Start ()
{
#if UNITY_EDITOR
string filepath = Application.dataPath +"/StreamingAssets"+"/json.txt"; #elif UNITY_IPHONE
string filepath = Application.dataPath +"/Raw"+"/json.txt";
#endif
StreamReader sr = File.OpenText(filepath);
string strLine = sr.ReadToEnd();
JsonData jd = JsonMapper.ToObject(strLine);
JsonData gameObjectArray = jd["GameObjects"];
int i,j,k;
for (i = 0; i < gameObjectArray.Count; i++)
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JsonData senseArray = gameObjectArray[i]["scenes"];
for (j = 0; j < senseArray.Count; j++)
{
string sceneName = (string)senseArray[j]["name"];
if(!sceneName.Equals("Assets/StarTrooper.unity"))
{
continue;
}
JsonData gameObjects = senseArray[j]["gameObject"];
for (k = 0; k < gameObjects.Count; k++)
{
string objectName = (string)gameObjects[k]["name"];
string asset = "Prefab/" + objectName;
Vector3 pos = Vector3.zero;
Vector3 rot = Vector3.zero;
Vector3 sca = Vector3.zero;
JsonData position = gameObjects[k]["position"];
JsonData rotation = gameObjects[k]["rotation"];
JsonData scale = gameObjects[k]["scale"];
pos.x = float.Parse((string)position[0]["x"]);
pos.y = float.Parse((string)position[0]["y"]);
pos.z = float.Parse((string)position[0]["z"]);
rot.x = float.Parse((string)rotation[0]["x"]);
rot.y = float.Parse((string)rotation[0]["y"]);
rot.z = float.Parse((string)rotation[0]["z"]);
sca.x = float.Parse((string)scale[0]["x"]);
sca.y = float.Parse((string)scale[0]["y"]);
sca.z = float.Parse((string)scale[0]["z"]);
GameObject ob = (GameObject)Instantiate(Resources.Load(asset),pos,Quaternion.Euler(rot));
ob.transform.localScale = sca;
}
}
}
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82 // Update is called once per frame
void Update () {
}
void OnGUI()
{
if(GUI.Button(new Rect(0,0,200,200),"JSON WORLD")) {
Application.LoadLevel("XMLScene");
}
}
}