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How to save ScriptableObject data

Coding, C-Sharp

What is the purpose of scriptable object ?

Saving and storing data during an Editor session (not in game mode)

Saving data as an Asset in your Project to use at run time (like class)

so the basic idea is

1. parse the scritable object as JSON data
2. save them in PlayerPrefs as string

Here is a script I used one of my project :

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;
using Random = UnityEngine.Random;

/// <summary>
/// Author : Shohanur Rahaman 
/// </summary>
[CreateAssetMenu(fileName = "wave info", menuName = "Zombie/Wave", order = 1)]
public class WaveInfo_SO : ScriptableObject {
    
    [TextArea]
    public string name;
    public string saveKey;
   
    [Header("Zombie Properties")]
    public int totalWave = 1;
    public int zombiePerWave = 1;
    public int waveInterval = 2;
    public GameObject[] zombiePrefab;
    
    private void OnValidate(){
        if (saveKey.Equals("")) {
            saveKey = name;
        }
    }

    public GameObject GetZombie(){
        GameObject z = zombiePrefab[Random.Range(0, zombiePrefab.Length)];
        return z;
    }

    public void UpdateWaves(){
        totalWave -= 1;
    }

    public int GetWaveCount(){
        return totalWave;
    }

    private void OnEnable(){

            // get data 
            JsonUtility.FromJsonOverwrite(PlayerPrefs.GetString(saveKey), this);
            EditorJsonUtility.FromJsonOverwrite(PlayerPrefs.GetString(saveKey), this);
            Debug.Log("overwrite data");
        
    }

    private void OnDisable(){
        // save data 
            if (saveKey.Equals("")) 
                saveKey = this.name;
            
            string jsonData = JsonUtility.ToJson(this, true);
            //Debug.Log(jsonData);
            PlayerPrefs.SetString(saveKey, jsonData);
            PlayerPrefs.Save();
        
    }
}

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