Cascading Save File

/* Simple example of how to make a cascading save file in text.
 * Meaning that instead of having one class that saves everything (translates all necessary information in text)
 * you let every single class save it's own bit of information, making it easier to debug for an instance.
 * The code was written for Unity3D (C#).
 */

using UnityEngine;
using System.Collections;
using System.Text;

public class LevelPack : ScriptableObject
{ // a level pack is a scriptable object containing all the level prefabs that belongs to this particular level pack
    [SerializeField]private string nameOfPack;
    public string NameOfPack { get { return nameOfPack; } }

    [SerializeField]private Level[] levelsOfThisPack;
    public Level[] LevelsOfThisPack { get { return levelsOfThisPack; } }

    public bool Unlocked = true;

    public string GetSaveData()
    {
        StringBuilder sb = new StringBuilder();

        int boolToInt = Unlocked == true ? 1 : 0;
        sb.Append(boolToInt.ToString());

        int length = levelsOfThisPack.Length;
        for(int i = 0 ; i < length; i++)
        {
            sb.Append("|");
            Level level = levelsOfThisPack[i];
            sb.Append(i);
            sb.Append("=");
            sb.Append(level.GetSaveData());
        }

        return sb.ToString();
    }

    public void SetSaveData(string saveString)
    {
        string[] stringArray = saveString.Split('|');

        int length1 = stringArray.Length;
        if(length1 >= 1)
        {
            int unlocked;
            if(int.TryParse(stringArray[0], out unlocked))
            {
                if(unlocked == 0)
                {
                    Unlocked = false;
                }
                else
                {
                    Unlocked = true;
                }
            }
            int levelLength = levelsOfThisPack.Length;

            for(int i = 1; i < length1; i++)
            {
                string[] stringArray2 = stringArray[i].Split('=');
                int length2 = stringArray2.Length;
                if(length2 == 2)
                {
                    int index;
                    if(int.TryParse(stringArray2[0], out index))
                    {
                        if(index >= 0 && index < levelLength)
                        {
                            levelsOfThisPack[index].SetData(stringArray2[1]);
                        }
                    }
                }
            }
        }
    }
}

using UnityEngine;
using System.Collections;
using System.Text;

public class Level : MonoBehaviour
{ // a monobehaviour attached to the level prefab (in this case: the prefab usually consists only out of two transforms, that indicate begin and end)
    public bool Unlocked = false;
    public bool Completed = false;

    public int Score = 0;

    public string GetSaveData()
    {
        StringBuilder sb = new StringBuilder();

        int boolToInt = Unlocked == true ? 1 : 0;
        sb.Append(boolToInt.ToString());

        sb.Append("_");

        boolToInt = Completed == true ? 1 : 0;
        sb.Append(boolToInt.ToString());

        sb.Append("_");

        sb.Append(Score.ToString());

        return sb.ToString();
    }

    public void SetData(string saveString)
    {
        string[] stringArray = saveString.Split('_');

        if(stringArray.Length == 3)
        {
            int unlocked;
            if(int.TryParse(stringArray[0], out unlocked))
            {
                if(unlocked == 0)
                {
                    Unlocked = false;
                }
                else
                {
                    Unlocked = true;
                }
            }
            else
            {
                Unlocked = false;
            }

            if(int.TryParse(stringArray[1], out unlocked))
            {
                if(unlocked == 0)
                {
                    Completed = false;
                }
                else
                {
                    Completed = true;
                }
            }
            else
            {
                Completed = false;
            }

            if(!int.TryParse(stringArray[2], out Score))
            {
                Score = 0;
            }
        }
    }
}