C# 字节数组和保存的游戏

Question

我需要一点帮助。我正在 Unity3D 中制作一个足够简单的游戏，我想使用 SavedGames(谷歌游戏服务)保存一些变量(黄金、库存等)。我已经读过它，显然我必须将数据作为字节数组发送到 Google Games。所以我也读过字节数组，但我不明白。关于它的每篇文章或问题似乎都假定了一定程度的知识(我显然没有)。我卡住了。我的问题是:如何从 int 变量转到字节数组？

例如:用户有 52 个金币 (int gold_coins)、三个治疗药水 (int heal_pot) 和 4 个法力药水 (int mana_pot)。我想将这三个变量放入一个字节数组中，当用户保存游戏状态时，我可以将其发送给 Google。然后，当他再次加载它时，字节数组中的数据需要返回到整数。 (当我首先看到如何将它们放入数组时，我可能会自己弄清楚最后一部分)。

我希望你们能给我解释一下，或者给我指明正确的方向。与此同时，祝你周一愉快。谢谢。

编辑 2:所以，我有这个:

在 SaveData.cs 中:

using UnityEngine;
using ProtoBuf;

[ProtoContract]
public enum DataType{
    pu0 = 0; //gold in game
    pu1 = 1; //heal_pot ingame
    pu2 = 2; //mana_pot ingame
}

[ProtoContract]
public class PBSaveData{
    [ProtoMember(1)]
    public DataType type;
    [ProtoMember(2)]
    public int amountStored;
}

在 PBGameState.cs 中:

using ProtoBuf;

[ProtoContract]
public class PBGameState{
    [ProtoMember(1)]
    public PBSaveData[] saveData;
}

在 SaveManager.cs 中:

using ProtoBuf;
using System.IO;

public class SaveManager{
    private string gameStateFilePath;

    void SaveState(){
        PBStateGame state = new PBGameState();
        state.saveData = new PBSaveData[3];
        for (int i=0; i<state.saveData.Length{
            state.saveData[i] = new PBSaveData();
            state.saveData[i].type = "pu" + (i+1);
            state.saveData[i].amoundStore = its[i] //its is where is store my inventory locally.
        }
        using(var ms = new MemoryStream()){
        // Serialize the data to the stream
            Serializer.Serialize(ms, state);
            byteArray = ms.ToArray();
        }
        // Create a texture the size of the screen, RGB24 format
        int width = Screen.width;
        int height = Screen.height;
        Texture2D Screenshot = new Texture2D( width, height, TextureFormat.RGB24, false );
        // Read screen contents into the texture
        Screenshot.ReadPixels( new Rect(0, 0, width, height), 0, 0 );
        Screenshot.Apply();


        long TotalPlayedTime = 20000;
        string currentSaveName =  "sg";
        string description  = "Modified data at: " + System.DateTime.Now.ToString("MM/dd/yyyy H:mm:ss");


        GooglePlaySavedGamesManager.ActionGameSaveResult += ActionGameSaveResult;
        GooglePlaySavedGamesManager.instance.CreateNewSnapshot(currentSaveName, description, Screenshot, byteArray, TotalPlayedTime);
    }
}

void LoadState()
{
    PBGameState state = new PBGameState ();

    using(var ms = new MemoryStream(byteArray)){
        state = Serializer.Deserialize<PBGameState> (ms);
        AndroidMessage.Create ("loadtest", state.saveData[0].amountStored.ToString());
    }

    if (state.saveData != null) {
        // Iterate through the loaded game state 
        for (int i = 0; i < state.saveData.Length; i++) {
            its [i] = state.saveData [i].amountStored;
        }
    } else {
        AndroidMessage.Create ("loadtest", "notworking");
    }
}

所以保存显然有效，但是当我重新启动游戏时，数据似乎没有加载(我有一个启动加载过程的按钮)并且库存是空的......知道我做错了什么吗？谢谢:)

教程链接如下: tuto

有人要吗？

Answer 1

你需要做的是:

• 有一个对象来存储你想要保存的值，例如类名 GameState 或其他什么
• 序列化您的此类实例，这是将您的实例转换为字节数组的过程
• 当你想从字节数组中取回你的值时，你需要反序列化你的字节数组

例如参见 Convert any object to a byte[]

另见 https://msdn.microsoft.com/en-us/library/ms233843.aspx

---

回答第二个问题:

不使用 FileStream，而是使用 MemoryStream:

// New MemoryStream, used just like any other stream, but without file (all in memory)
var ms = new MemoryStream();

// Serialize the data to the stream
Serializer.Serialize(fs, state);

// Get back the byte array from the stream
// Doesn't matter where the Position is on the stream, this'll return the
// whole MemoryStream as a byte array
var byteArray = ms.ToArray();