devNotes 6-20-16 modal menu cycling, scroll plate, tap tap tap

Exercise App

https://www.passion47.com/unity-3d/unity-5-3-using-json-serialization

http://forum.unity3d.com/threads/howto-use-json-in-5-3-guide.373455/

https://sometimesicode.wordpress.com/2015/04/11/unity-serialization-part-1-how-it-works-and-examples/

http://answers.unity3d.com/questions/1171740/android-devices-does-not-read-json-file-but-unity.html

http://sushanta1991.blogspot.com/2014/10/how-to-read-and-write-xml-in-unity.html

Things you should know, First time when you will run the game, there will be no xml present in the directory. So first thing you need to do is save the xml with default values. now you have a xml file where you can save and load data.

what i am doing here is , i have 4 players, i am setting there position randomly , saving their data and then loading there data from xml.

In this function getPath() you can see for Android and Iphone i am using Application.persistentDataPath instead of Application.dataPath that’s because in Iphone and Android you have permission to write files in Application.persistentDataPath only.

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

public class GameManager : MonoBehaviour {
    
    private List<GameObject> Players = new List<GameObject>();
    private string path;
    public string fileName;
    public Camera myCam;
    private GameObject previousPlayer;

    void Start () {

        GameObject[] allPlayers = new GameObject[GameObject.FindGameObjectsWithTag("Player").Length];
        allPlayers = GameObject.FindGameObjectsWithTag("Player");
        for(int i = 0; i < allPlayers.Length; i++)
        {
            Players.Add(allPlayers[i]);
        }
    }

    public void SetPosition()
    {
        for(int i = 0; i < Players.Count; i++)
        {
            Players[i].transform.position = new Vector3(Random.Range(-7,7),3,Random.Range(7,42));
        }
    }

    public void Load()
    {
        if(System.IO.File.Exists(getPath()))
        {
            path = getPath();
            
            XmlReader reader = XmlReader.Create(path);
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(reader);
               XmlNodeList Data = xmlDoc.GetElementsByTagName("Data");
            for(int i = 0; i < Data.Count;i++)
            {
                // getting data
                XmlNode DataChilds = Data.Item(i); 
                // getting all gameObjects stored inside data
                XmlNodeList allGameObjects = DataChilds.ChildNodes;
                
                
                for(int j = 0; j < allGameObjects.Count ; j++)
                {
                    XmlNode game_Objects = allGameObjects.Item(j);
                    
                    //Finding the player, if he is present than loading its position and rotation
                    GameObject player = GameObject.Find(game_Objects.Name);
                    if(player)
                    {
                        XmlNodeList GameObjects_Position_Rotation = game_Objects.ChildNodes;
                        //First element have the position stored inside it 
                        XmlNode GameObjects_Position = GameObjects_Position_Rotation.Item(0);
                        
                        string[] split_position = GameObjects_Position.InnerText.Split(',');
                        player.transform.position = new Vector3(float.Parse(split_position[0]),float.Parse(split_position[1]),float.Parse(split_position[2]));
                        //Second element have the rotation stored inside it 
                        XmlNode GameObjects_Rotation = GameObjects_Position_Rotation.Item(1);
                        
                        string[] split_rotation = GameObjects_Rotation.InnerText.Split(',');
                        player.transform.rotation = new Quaternion(float.Parse(split_rotation[0]),float.Parse(split_rotation[1]),float.Parse(split_rotation[2]),float.Parse(split_rotation[3]));
                    }
                }
            }
            reader.Close();
        }
    }

    
    public void Save(){


        path = getPath();
        XmlDocument xmlDoc = new XmlDocument();
       
        XmlElement elmRoot = xmlDoc.CreateElement("Data");
        xmlDoc.AppendChild(elmRoot);
        
        for(int i = 0; i < Players.Count; i++)
        {
            //Creating an xml element with player name
            XmlElement Player_Object = xmlDoc.CreateElement(Players[i].name);
            //Creating an xml element for saving player position
            XmlElement Player_Position = xmlDoc.CreateElement("Position");
            //Combining player position x,y and z value into a single string separeted by commas
            Player_Position.InnerText = Players[i].transform.position.x+","+Players[i].transform.position.y+","+Players[i].transform.position.z;
            //Creating an xml element for saving player rotation
            XmlElement Player_Rotation = xmlDoc.CreateElement("Rotation");
            //Combining player rotation x,y,z and w value into a single string separeted by commas
            Player_Rotation.InnerText = Players[i].transform.rotation.x+","+Players[i].transform.rotation.y+","+Players[i].transform.rotation.z+","+Players[i].transform.rotation.w;
            Player_Object.AppendChild(Player_Position);
            Player_Object.AppendChild(Player_Rotation);
            elmRoot.AppendChild(Player_Object);
        }

        StreamWriter outStream = System.IO.File.CreateText(path);

        xmlDoc.Save(outStream);
        outStream.Close();
    }

    // Following method is used to retrive the relative path as device platform
    private string getPath(){
        #if UNITY_EDITOR
        return Application.dataPath +"/Resources/"+fileName;
        #elif UNITY_ANDROID
        return Application.persistentDataPath+fileName;
        #elif UNITY_IPHONE
        return Application.persistentDataPath+"/"+fileName;
        #else
        return Application.dataPath +"/"+ fileName;
        #endif
    }
}