Game_CodeMM/Assets/00_scripts/SaveManager.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using Unity.VisualScripting;
using UnityEngine;

public class SaveManager : MonoBehaviour
{
    private static SaveManager _instance;
    private string _savePath;

    public SaveData currentSaveData;

    // 存档
    void Start()
    {
    }

    void Update()
    {
    }

    private void Awake()
    {
        if (_instance == null)
        {
            _instance = this;
            DontDestroyOnLoad(gameObject);
            _savePath = Application.persistentDataPath + "/save.json";
        }
        else
        {
            Destroy(gameObject);
        }
    }

    private void SaveGame()
    {
        string json = JsonUtility.ToJson(currentSaveData, true);
        File.WriteAllText(_savePath, json);
        Debug.Log("SaveGame Success");
    }

    public void OnButtonDownSaveGameData()
    {
        print("SaveGame Start");
        test();
        SaveGame();
    }

    public void OnButtonDownDeleteGameData()
    {
        if (!File.Exists(_savePath)) return;
        File.Delete(_savePath);
        Debug.Log("Delete Save Data");
    }

    private void test()
    {
        SaveData _testData = new SaveData();
        _testData.playerLevel = 10;
        _testData.gold = 100;
        _instance.currentSaveData = _testData;
        SaveGame();
    }

    public void OnButtonDownLoadGameData()
    {
        if (File.Exists(_savePath))
        {
            string json = File.ReadAllText(_savePath);
            currentSaveData = JsonUtility.FromJson<SaveData>(json);
            print(currentSaveData.playerLevel);
            print(currentSaveData.gold);
            print(currentSaveData);
            Debug.Log("Load Game Success");
        }
        else
        {
            Debug.Log("404!!!");
            currentSaveData = new SaveData
            {
                playerLevel = 1,
                gold = 0
            }; // 没有存档就创建一个默认存档
            SaveGame();
        }
    }
}