How Do I Save A Value In c# Unity [duplicate]

Question

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

public class AttemptCounter : MonoBehaviour {

    public Text AttemptText;
    public int Attempts = 1;
    public int AddAttempts = 1;

    public void AddAttempt()
    {
        Attempts = Attempts + AddAttempts;
        AttemptText.text = ("Attempts: " + Attempts.ToString(""));
        Attempts = PlayerPrefs.GetInt ("Attempts");
        PlayerPrefs.GetInt ("Attempts");
    }

    void Update()
    {
        AttemptText.text = ("Attempts: " + Attempts.ToString(""));
        PlayerPrefs.SetInt ("Attempts", Attempts);
    }
}

I Am Trying To Add a Attempts System In My Game, Every time a user will restart a level the game will add one attempt, however because when restarting the level it uses the code

SceneManager.LoadScene (SceneManager.GetActiveScene ().name);

It doesnt save the int meaning that its keeping the attempt counter on 1, can anyone help, Thanks.

Answer 1

Well, you are using the lines of code in the wrong order, since you are first setting Attempts without first loading the value stored on the "Attempts" key.

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

public class AttemptCounter : MonoBehaviour
{

    public Text AttemptText;
    public int Attempts = 1;
    public int AddAttempts = 1;

    public void AddAttempt()
    {
        /// 1.- You should first load the saved "Atempsts" value.
        Attempts = PlayerPrefs.GetInt ("Attempts");
        /// 2.- Then you add the attempts.
        Attempts += AddAttempts;
        /// Now the debug should throw you the expected value.
        AttemptText.text = ("Attempts: " + Attempts.ToString(""));
        /// 3.- You don't need to Save the int on update, just when you add it.
        PlayerPrefs.SetInt ("Attempts", Attempts);
    }

}

Now, about other ways of storing data, you could use ScriptableObjects, XML Serialization, or use persistent GameObjects, like this:

public class AttemptsHolder : MonoBehaviour
{
    private int attempts;

    void Awake()
    {
        attempts = PlayerPrefs.GetInt("Attempts");
        DontDestroyOnLoad(gameObject); /// With this, the GameObject doesn't go to the Garbage collector when a scene loads.
    }

    public void SetAttempts(int _attempts){ attempts = _attempts; }
    public int GetAttempts(){ return attempts; }

    public void SaveAttempts()
    {
        PlayerPrefs.SetInt("Attempts", attempts);
    }
}

Hope it helps.