Save data not creating save file

Questions & Answers
1

I’ve done a save system before, and I didn’t change anything about the system but it’s not working.
So here is my save script and it just creates a file and opens it when you want to load it. It keeps saying file not found and I’m getting a NullReferenceException

using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using UnityEngine;
using System.Runtime.CompilerServices;

public static class SaveScript
{
    public static void SaveStats(PlayerControls controls)
    {
        BinaryFormatter formatter = new BinaryFormatter();
        string path = Application.persistentDataPath + "/targetBlast.GameData";
        FileStream stream = new FileStream(path, FileMode.Create);

        PlayerData data = new PlayerData(controls);

        formatter.Serialize(stream, data);
        stream.Close();
    }

    public static PlayerData LoadStats()
    {
        string path = Application.persistentDataPath + "/targetBlast.GameData";

        if (File.Exists(path))
        {
            Debug.Log("File found" + path);
            BinaryFormatter formatter = new BinaryFormatter();
            FileStream stream = new FileStream(path, FileMode.Open);

            PlayerData data = formatter.Deserialize(stream) as PlayerData;
            stream.Close();

            return data;
        }
        else 
        {
            Debug.Log("File not found" + path);
            return null;
        }
    }
}

This is my main script where the variables that I’m saving are. I keep getting a NullReferenceException error saying Object reference not set to the instance of an object and I’m getting an error because of the variable “allPoints” for some reason.

public void SaveGame()
{
    SaveScript.SaveStats(this);
}

public void LoadGame()
{
    PlayerData data = SaveScript.LoadStats();

    this.allPoints = data.allPoints;
}

Here is my last script where I store the player’s data

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[System.Serializable]
public class PlayerData
{
    public int allPoints;

    public bool levelUnlockedZero;
    public bool levelUnlockedOne;
    public bool levelUnlockedTwo;
    public bool levelUnlockedThree;
    public bool levelUnlockedFour;
    public bool levelUnlockedFive;
    public bool levelUnlockedSix;
    public bool levelUnlockedSeven;

    public bool hasAbilityZero;
    public bool hasAbilityOne;
    public bool hasAbilityTwo;
    public bool hasAbilityThree;
    public bool hasAbilityFour;
    public bool hasAbilityFive;
    public bool hasAbilitySix;
    public bool hasAbilitySeven;

    public PlayerData (PlayerControls controls)
    {
        allPoints = controls.allPoints;

        levelUnlockedZero = controls.levelUnlocked[0];
        levelUnlockedOne = controls.levelUnlocked[1];
        levelUnlockedTwo = controls.levelUnlocked[2];
        levelUnlockedThree = controls.levelUnlocked[3];
        levelUnlockedFour = controls.levelUnlocked[4];
        levelUnlockedFive = controls.levelUnlocked[5];
        levelUnlockedSix = controls.levelUnlocked[6];
        levelUnlockedSeven = controls.levelUnlocked[7];

        hasAbilityZero = controls.hasAbility[0];
        hasAbilityOne = controls.hasAbility[1];
        hasAbilityTwo = controls.hasAbility[2];
        hasAbilityThree = controls.hasAbility[3];
        hasAbilityFour = controls.hasAbility[4];
        hasAbilityFive = controls.hasAbility[5];
        hasAbilitySix = controls.hasAbility[6];
        hasAbilitySeven = controls.hasAbility[7];
    }
}
2

I don’t know the answer, but I’ve already a working SaveManager, maybe it helps you:

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


public class SaveManager : MonoBehaviour
{
    
    public bool load = true;
    public bool save = false;



    public SaveData activeSave;

   
    
    void Awake() 
    {
        Debug.Log(Application.persistentDataPath);
        if(save){Save();}
        if(load){Load();}
    }
   

    void Update()
    {
        if(Input.GetKeyDown(KeyCode.S))
        {
            Save();
        }

        if(Input.GetKeyDown(KeyCode.L))
        {
            Load();
        }
    }

    public void Save()
    {
        //print("saving");
        string dataPath = Application.persistentDataPath;
        //print(dataPath);
        

        XmlSerializer serializer = new XmlSerializer(typeof(SaveData));
        FileStream stream = new FileStream(dataPath + "/" + activeSave.saveName + ".xml", FileMode.Create);
        //print(stream);
        serializer.Serialize(stream, activeSave);
        stream.Close();

        //print("saved");
    }

    

    public void Load() 
    {
        print("loading");
        string dataPath = Application.persistentDataPath;
        //print(dataPath);

        if(System.IO.File.Exists(dataPath + "/" + activeSave.saveName + ".xml"))
        {
            print("exsits");
            var serializer = new XmlSerializer(typeof(SaveData));
            var stream = new FileStream(dataPath + "/" + activeSave.saveName + ".xml", FileMode.Open);
            //print(stream);
            activeSave = serializer.Deserialize(stream) as SaveData;
            //print(activeSave);
            stream.Close();


            
            
            
            
            
            print("loaded");
        }
    }
 /*
    //Load xml file
    public void Load()
    {
        string dataPath = Application.persistentDataPath;
        XmlSerializer serializer = new XmlSerializer(typeof(SaveData));            //Create serializer
        FileStream stream = new FileStream(dataPath, FileMode.Open); //Load file at this path
        activeSave = serializer.Deserialize(stream) as SaveData;
        stream.Close();//Close the stream
    }
*/

    public void LoadData()
    {
        string dataPath = Application.persistentDataPath;
        if (File.Exists(dataPath + "/" + activeSave.saveName + ".xml"))
        {
            //var serializer = new XmlSerializer(typeof(SaveData));
            //var stream = new FileStream(dataPath + "/" + activeSave.saveName + ".save", FileMode.Create);
            
            //activeSave = serializer.Deserialize(stream) as SaveData;
            string filePath2 = dataPath + "/" + activeSave.saveName + ".xml";

            //string fileText = File.ReadAllText(filePath);
            XmlSerializer serializer = new XmlSerializer(typeof(SaveData));
            using (StringReader reader = new StringReader(filePath2))
            {
                //return (SaveData)(serializer.Deserialize(reader)) as SaveData;
                activeSave = (SaveData)(serializer.Deserialize(reader)) as SaveData;
                print("loaded");
            }
        }
        
    }

}

[System.Serializable]
public class SaveData
{
    public string saveName;

    public int age;
    public int mass;
    public int size;
    public int fitLevel;
    public bool tone;
    public bool softAP;
    public bool firstStart = true;
    public List<float> ListGraph1;
    public List<float> ListGraph2;
    public List<float> ListGraph3;
}