SaveSystem

	public class SaveSystem : MonoBehaviour
    {
        #region Instance
        public static SaveSystem Instance;

        public void Awake()
        {
            if (Instance != null)
                Instance = this;
        }
        #endregion

        public Dictionary<int, ObjectData> LevelData = new Dictionary<int, ObjectData>();

        public bool HasObject(int ID)
        {
            return LevelData.ContainsKey(ID);
        }

        public ObjectData GetObject(int ID)
        {
            if (HasObject(ID))
                return LevelData[ID];
            else
                return null;
        }

        public void RegisterObject(int ID, ObjectData data)
        {
            LevelData.Add(ID, data);
        }

        public void UpdateData(int ID, ObjectData newData)
        {
            LevelData[ID] = newData;
        }

        public void OnDestroy() // when we quit the game save
        {
            Save();
        }

        public void Save()
        {
            string json = JsonUtility.ToJson(LevelData);
            //save the json in a file
        }

        public void Load(string json)
        {
            LevelData = JsonUtility.FromJson<Dictionary<int, ObjectData>>(json);
            //TODO create all the objects, again
        }
    }

    public class ObjectData
    {
        public Vector3 Position;
        public Quaternion Rotation;

        public bool Destroied;

        public ObjectData(Vector3 pos, Quaternion rot, bool des)
        {
            this.Position = pos;
            this.Rotation = rot;
            this.Destroied = des;
        }
    }