Save multiple objects and then loading them

I can’t figure out how to load more than one object without causing a whole mess. I’ll show you what I have of the save script that I found. It allows you to save the position of one object. But I need to save the position of multiple objects.

import System;
import System.Collections;
import System.Xml;
import System.Xml.Serialization;
import System.IO;
import System.Text;

// Anything we want to store in the XML file, we define it here
class DemoData
{
    var x : float;
    var y : float;
    var z : float;
    var name : String;
}

// UserData is our custom class that holds our defined objects we want to store in XML format
 class UserData
 {
    // We have to define a default instance of the structure
   public var _iUser : DemoData = new DemoData();
    // Default constructor doesn't really do anything at the moment
   function UserData() { }
}

//public class GameSaveLoad: MonoBehaviour {

// An example where the encoding can be found is at
// http://www.eggheadcafe.com/articles/system.xml.xmlserialization.asp
// We will just use the KISS method and cheat a little and use
// the examples from the web page since they are fully described

// This is our local private members
private var _Save : Rect;
private var _Load : Rect;
private var _SaveMSG : Rect;
private var _LoadMSG : Rect;
//var _ShouldSave : boolean;
//var _ShouldLoad : boolean;
//var _SwitchSave : boolean;
//var _SwitchLoad : boolean;
private var _FileLocation : String;
private var _FileName : String = "SaveData.xml";

//public GameObject _Player;
var _Player : GameObject;
var _PlayerName : String = "Joe Schmoe";

private var myData : UserData;
private var _data : String;

private var VPosition : Vector3;

// When the EGO is instansiated the Start will trigger
// so we setup our initial values for our local members
//function Start () {
function Awake () { 
      // We setup our rectangles for our messages
      _Save=new Rect(20,70,80,20);
      _Load=new Rect(10,100,100,20);
      _SaveMSG=new Rect(10,120,200,40);
      _LoadMSG=new Rect(10,140,200,40);
       
      // Where we want to save and load to and from
      _FileLocation=Application.dataPath;
     
         
      // we need soemthing to store the information into
      myData=new UserData();
   }
   
function Update () {}
   
function OnGUI()
{   

   // ***************************************************
   // Loading The Player...
   // **************************************************       
   /*if (GUI.Button(_Load,"Load")) {
     
      GUI.Label(_LoadMSG,"Loading from: "+_FileLocation);
      // Load our UserData into myData
      LoadXML();
      if(_data.ToString() != "")
      {
         // notice how I use a reference to type (UserData) here, you need this
         // so that the returned object is converted into the correct type
         //myData = (UserData)DeserializeObject(_data);
         myData = DeserializeObject(_data);
         // set the players position to the data we loaded
         VPosition=new Vector3(myData._iUser.x,myData._iUser.y,myData._iUser.z);             
         _Player.transform.position=VPosition;
         // just a way to show that we loaded in ok
         Debug.Log(myData._iUser.name);
      }
   
   }*/
   
   // ***************************************************
   // Saving The Player...
   // **************************************************   
   if (GUI.Button(_Save,"Save")) {
           
      GUI.Label(_SaveMSG,"Saving to: "+_FileLocation);
      //Debug.Log("SaveLoadXML: sanity check:"+ _Player.transform.position.x);
     
      myData._iUser.x = _Player.transform.position.x;
      myData._iUser.y = _Player.transform.position.y;
      myData._iUser.z = _Player.transform.position.z;
      myData._iUser.name = _PlayerName;   
       
      // Time to creat our XML!
      _data = SerializeObject(myData);
      // This is the final resulting XML from the serialization process
      CreateXML();
      Debug.Log(_data);
   }


}
   
/* The following metods came from the referenced URL */
//string UTF8ByteArrayToString(byte[] characters)
function UTF8ByteArrayToString(characters : byte[] )
{     
   var encoding : UTF8Encoding  = new UTF8Encoding();
   var constructedString : String  = encoding.GetString(characters);
   return (constructedString);
}

//byte[] StringToUTF8ByteArray(string pXmlString)
function StringToUTF8ByteArray(pXmlString : String)
{
   var encoding : UTF8Encoding  = new UTF8Encoding();
   var byteArray : byte[]  = encoding.GetBytes(pXmlString);
   return byteArray;
}
   
   // Here we serialize our UserData object of myData
   //string SerializeObject(object pObject)
function SerializeObject(pObject : Object)
{
   var XmlizedString : String  = null;
   var memoryStream : MemoryStream  = new MemoryStream();
   var xs : XmlSerializer = new XmlSerializer(typeof(UserData));
   var xmlTextWriter : XmlTextWriter  = new XmlTextWriter(memoryStream, Encoding.UTF8);
   xs.Serialize(xmlTextWriter, pObject);
   memoryStream = xmlTextWriter.BaseStream; // (MemoryStream)
   XmlizedString = UTF8ByteArrayToString(memoryStream.ToArray());
   return XmlizedString;
}

   // Here we deserialize it back into its original form
   //object DeserializeObject(string pXmlizedString)
function DeserializeObject(pXmlizedString : String)   
{
   var xs : XmlSerializer  = new XmlSerializer(typeof(UserData));
   var memoryStream : MemoryStream  = new MemoryStream(StringToUTF8ByteArray(pXmlizedString));
   var xmlTextWriter : XmlTextWriter  = new XmlTextWriter(memoryStream, Encoding.UTF8);
   return xs.Deserialize(memoryStream);
}

   // Finally our save and load methods for the file itself
function CreateXML()
{
   var writer : StreamWriter;
   //FileInfo t = new FileInfo(_FileLocation+"\\"+ _FileName);
   var t : FileInfo = new FileInfo(_FileLocation+"/"+ _FileName);
   if(!t.Exists)
   {
      writer = t.CreateText();
   }
   else
   {
      t.Delete();
      writer = t.CreateText();
   }
   writer.Write(_data);
   writer.Close();
   Debug.Log("File written.");
}
   
function LoadXML()
{
   //StreamReader r = File.OpenText(_FileLocation+"\\"+ _FileName);
   var r : StreamReader = File.OpenText(_FileLocation+"/"+ _FileName);
   var _info : String = r.ReadToEnd();
   r.Close();
   _data=_info;
   Debug.Log("File Read");
}

//}

I removed the load button gui because I have a seperate script that loads the file automatically when you go into the scene.

Can anyone help?

I used Amazingint’s example as a base for my userstats script, take a look:

http://forum.unity3d.com/threads/41323-XML-Question…?p=264059&viewfull=1#post264059

does it save objects too? lol I don’t really need it to save variables just objects inside the gamespace

What information do you want to save of the object ?

well I know how to save information of a object. My script saves the position of whatever object I specify. I want to be able to save the position of more than object in one script or a way to put a script in each object and it saves and loads when I call a specific function.