I need help to save and load

Im pretty new to unity and i wanna make a save and load system to my mobile game. This is the code:

using UnityEngine;

using UnityEngine.UI;

using System.Collections;



public class IdleScript : MonoBehaviour

{

   

    public Text coinsText;

    public Text clickUpgrade1Text;

    public double coins;

    public double coinsClickValue;

    public double clickUpgrade1Cost;

    public int clickUpgrade1Level;



   

    public void Start(){

        coinsClickValue = 1;

        clickUpgrade1Cost = 10;

    }







    public void Update(){

       

        coinsText.text = coins.ToString("F0") + "$";

        clickUpgrade1Text.text = "Click Upgrade 1\nCost: " + clickUpgrade1Cost + " coins\nPower: +1 Click\nLevel: " + clickUpgrade1Level;

    }



    public void Click(){

        coins += coinsClickValue;

    }



    public void BuyClickUpgrade1(){

        if (coins >= clickUpgrade1Cost){

            clickUpgrade1Level++;

            coins -= clickUpgrade1Cost;

            clickUpgrade1Cost += 100;

            coinsClickValue++;

        }

    }

}

 

Hi,

if you want to save/load simple things like numbers and string,
then its easy to use PlayerPrefs
https://docs.unity3d.com/ScriptReference/PlayerPrefs.html

 

You can use JsonUtility.
https://docs.unity3d.com/ScriptReference/JsonUtility.html
https://docs.unity3d.com/ScriptReference/JsonUtility.ToJson.html

Make a structure for the data you want to serialize, then dump it into string.
Then load it back from string.

Do check for possible errors, and do keep in mind that json data is human-readable.

 

But how can i save doubles? And can you plese show it in the code?

 

Why are you using doubles in the first place?

 

Convert the double to a string. Save it. Then reload it from a string and convert it back.

Saving basically looks like this, regardless of the data:

1. Gather the data to be saved
2. Convert the data to a string (serialize)
3. Write the string to a save location

Also check out this tutorial. https://learn.unity.com/tutorial/persistence-saving-and-loading-data

(Here is the link without the new learn section BS.)