Feedback I Need Help In Using PlayerPrffs

So I Made A Working Level Selector Using A Brackeys Video

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5.  
6. public class LevelSelector : MonoBehaviour
7. {
8.     public LevelFaderScript fader;
9.     public Button[] levelsButtons;
10.  
11.     void Start()
12.     {
13.         int levelReached = PlayerPrefs.GetInt("levelReached", 1);
14.  
15.         for (int i = 0; i < levelsButtons.Length; i++)
16.         {
17.             if (i + 1 > levelReached)
18.             {
19.                 levelsButtons[i].interactable = false;
20.             }
21.            
22.         }      
23.  
24.     }
25.  
26.     public void SelectLevel(int levelIndex)
27.     {
28.         fader.FadeToLevel(levelIndex);
29.     }
30.  
31. }
32.  
33.  

And I Want In The Game Manager, In The PlayerPrefs, Use This Function: PlayerPrefs.SetInt("levelReached", levelReached + 1);
But I Cannot Use The LevelReached variable since it is in another script.
Will it work if I Use static variable, or no?
I just want to increase the levelReached when I Win A Level and pass the other
Somebody help me!

 

Make the variable/field public or use properties (get and set accessors). Then you need to just reference the object somehow in your code, like making a public field where you drag your
another script. Now you can access that data in your current code.

For example,

Public field:

Code (CSharp):

1. public int levelReached;

Get/Set accessors:

Code (CSharp):

1. // Your private variable
2. private int _levelReached;
3.  
4. // public access to it
5. public int LevelReached
6. {
7.     get { return _levelReached; }
8.     set { _levelReached = value; }
9. }

How to reference another location:
you need to fill this field either in code or in Inspector by dragging and object in that contains the script GameManager:

Code (CSharp):

1. GameManager gameManager;

When you need to access that level value, you can:

Code (CSharp):

1. // Print it out to Debug log
2. Debug.Log("LevelReached: " + gameManager.LevelReached);
3.  
4. // Increment the level counter by one
5. gameManager.LevelReached++;

 

The problem is that The LevelSelector Script And The GameManager Are In DifferentScene
The Level Selector Is In The LevelSelector Scene And The Game manager is in the level01
so i couldn't use a public variable, maybe a static? but i want to save the progress
what should i do then

 

you already answered your own question.
make it static.
I mean get rip of MonoBehaviour

Code (CSharp):

1. public static class GameDB
2.     {
3.         public static int levelReached
4.         {
5.             get => PlayerPrefs.GetInt("levelReached", 0);
6.             set => PlayerPrefs.SetInt("levelReached", value);
7.         }
8.     }

however put things in static as global, was not a good practice.
use it wisely.

OR~

if you have any requirement depend on MonoBehaviour.
try to implement the singleton design pattern.
https://wiki.unity3d.com/index.php/Singleton
and make it `DontDestroyOnLoad`