C＃-Unity3d在游戏中保存一些变量？

Question

I would make sure when I close The Game , he saved automatically some variables ( scores ), and show them once started ?

To do this i need to use these to save an float?

void Awake
void Load

or i need these?

public void Load
public void Save

can you show me some example code line that works? thanks

Answer 1

A good option for that is to use the OnEnable and OnDisable event functions .

using UnityEngine;

public class GameSaver : MonoBehaviour
{
    int _score;

    void OnEnable()
    {
         _score = PlayerPrefs.GetInt("Player Score");
    }

    void OnDisable()
    {
         PlayerPrefs.SetInt("Player Score", score);
    }

    void Update()
    {
        // change the _score during the game execution.
    }
}

Make sure that the object you attach the script to exists throughout the whole game. You also could call those functions manually from your code when you need it.

Of course, you could create your own methods called Load and Save or Serialize and Deserialize and then call them from OnEnable and OnDisable , like that:

void OnEnable()
{
    Load();
}

void Load()
{
    _score = PlayerPrefs.GetInt("Player Score");
} 

This will look better from the prorgammers point of view, but the program will work pretty much the same way.

You may also prefer to use the methods like Awake and OnApplicationQuit , but you still would need your game object to be alive from start to end, so this does not make much sense.

If you need to save more than just a few variables, you might want to take a look at the so called Unity Serializer .