列表到字典并返回

Question

我读过很多关于字典和序列化等的文章，它们都有不同的处理方式。作为编码新手(在某种程度上)，我很难弄清楚如何将我的字典放入列表或序列化以保存它，然后在播放时重新加载。顺便说一下，这是Unity。这是我用的。我有一个应用程序管理器，它主要是一组BOOL值，告诉我的任务系统是否完成了某些事情。比如&;GetWeapon false &;(然后当他们捡起它时，它会变成TRUE，告诉任务系统移动到下一个目标或完成)我有一个键值的起始列表。然后将它们放入字典中，并在其中更改值。我需要能够保存这些值并在LOAD时重新加载它们(游戏邦注:默认的PLAY模式是newgame——正如你在下面所看到的，它会重置字典并在开始状态下进行复制)。我知道这不会像我说的那么难，只是不理解整个连载的事情。大多数网站都显示像{key,value}这样的字典，所以我在迭代字典并捕获对并保存它们时迷失了方向。

以下是appmanager的部分代码(它是一个单例):

// This holds any states you wish set at game startup
[SerializeField] private List<GameState> _startingGameStates = new List<GameState>();

// Used to store the key/values pairs in the above list in a more efficient dictionary
private Dictionary<string, string> _gameStateDictionary = new Dictionary<string, string>();

void Awake()
{
// This object must live for the entire application
DontDestroyOnLoad(gameObject);
ResetGameStates();
}

void ResetGameStates()
{
_gameStateDictionary.Clear();
// Copy starting game states into game state dictionary
for (int i = 0; i < _startingGameStates.Count; i++)
{
GameState gs = _startingGameStates[i];
_gameStateDictionary[gs.Key] = gs.Value;
}
OnStateChanged.Invoke();
}

public GameState GetStartingGameState(string key)
{
for (int i = 0; i < _startingGameStates.Count; i++)
{
if (_startingGameStates[i] != null && _startingGameStates[i].Key.Equals(key))
return _startingGameStates[i];
}
return null;
}

// Name    :  SetGameState
// Desc    :  Sets a Game State
public bool SetGameState(string key, string value)
{
if (key == null || value == null) return false;
_gameStateDictionary[key] = value;

OnStateChanged.Invoke();
return true;
}

尝试了类似的操作:

Dictionary<string, string> _gameStateDictionary = new Dictionary<string, string>
{
for (int i = 0; i < _gameStateDictionary.Count; i++)
string json = JsonConvert.SerializeObject(_gameStateDictionary, Formatting.Indented);
Debug.Log(json);
{

}

然而，我得到的只是列表中的第一项。(我确实在for循环中修改了上面的代码)我知道上面的代码是错误的，我做了其他迭代，只是为了让字典在控制台中打印出来。无论如何，只是要求一些代码帮助保存和加载字典。

Answer 1

既然你想保存和加载那些持久的无论如何，就我个人而言，我不会使用检查器，也不会为Unity序列化而烦恼，而是直接对json进行序列化/反序列化。

简单地把你的默认字典作为一个简单的json文件，例如

{
"Key1" : "Value1",
"Key2" : "Value2",
"Key3" : "Value3",
...
}  

文件夹Assets/StreamingAssets(如果它不存在，创建它)。如果到目前为止还不存在的话，这将是默认的备用文件。

运行时，您将从Application.streamingAssetsPath加载它。

然后当你保存时，你不会把它放在那里，而是放在Application.persistentDataPath

using Newtonsoft.Json;

...
[SerializeField] private string fileName = "example.json";
private string defaultStatesPath => Path.Combine(Application.streamingAssetsPath, fileName);
private string persistentStatesPath => Path.Combine(Application.persistentDataPath, fileName);
private Dictionary<string, string> _gameStateDictionary 
public void Load()
{
var filePath = persistentStatesPath;
if(!File.Exists(filePath))
{
filePath = defaultStatesPath;
}
var json = File.ReadAllText(filePath);
_gameStateDictionary = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);
}
public void Save()
{
var filePath = persistentStatesPath;
if(!Directory.Exists(Application.persistentDataPath))
{
Directory.CreateDirectory(Application.persistentDataPath);
}
var json = JsonConvert.SerializeObject(_gameStateDictionary, Formatting.intended);
File.WriteAllText(filePath, json);
}

---

如果你仍然想通过检查器编辑默认值，你可以合并两者，而不是使用StreamingAssetsdo

[SerializeField] private GameState[] defaultStates;
public void Load()
{
var filePath = persistentStatesPath;
if(!File.Exists(filePath))
{
LoadDefaults();
return;
}
var json = File.ReadAllText(filePath);
_gameStateDictionary = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);
}
public void LoadDefaults()
{
_gameStateDictionary = defaultStates.ToDictionary(gameState => gameState.Key, gameState => gameState.Value);
}

---

然后你可以写

public string GetState(string key, string fallbackValue = "")
{
if(_gameStateDictionary.TryGetValue(key, out var value))
{
return value;
}
return fallbackValue;
}

Answer 2

您可以使用它的Keys集合来迭代字典。

foreach (var key in myDictionary.Keys)
{
var val = myDictionary[key];
}

用键/值对填充你的数据结构，并序列化项目列表。

var missionItems = new List<MissionItem>();
foreach (var key in myDictionary.Keys)
{
var missionItem = new MissionItem();
missionItem.Key = key;
missionItem.Value = myDictionary[key];
missionItems.Add(missionItem);
}
var json = JsonUtility.ToJson(missionItems);

加载是直接的，反序列化数据，然后遍历所有项并将每个项添加到空字典中。

var missionItems = JsonUtility.FromJson<List<MissionItem>>(json);
foreach (var item in missionItems)
{
myDictionary.Add(item.Key, item.Value);
}

Answer 3

这是我最后的设置。我在另一个脚本(UI暂停菜单保存/加载按钮)中调用这些按钮

private bool useEncryption = true;
private string encryptionCodeWord = "CodeWordHere";
private static string fileName = "name.json";
private static string defaultStatesPath => Path.Combine(Application.streamingAssetsPath, fileName);
private static string persistentStatesPath => Path.Combine(Application.persistentDataPath, fileName);

public void SaveStates(int slotIndex)
{
var filePath = persistentStatesPath;

if(!Directory.Exists(Application.persistentDataPath))
{
Directory.CreateDirectory(Application.persistentDataPath);
}

var json = JsonConvert.SerializeObject(_gameStateDictionary, Formatting.Indented);
if (useEncryption)
{
Debug.Log("Using Encryption");
json = EncryptDecrypt(json);
}
File.WriteAllText(filePath + slotIndex, json);
}


public  void LoadStates(int SlotIndex)
{
var filePath = persistentStatesPath;
if(!File.Exists(filePath + SlotIndex))
{
filePath = defaultStatesPath;
}
var json = File.ReadAllText(filePath + SlotIndex);
if (useEncryption)
{
Debug.Log("Using Encryption");
json = EncryptDecrypt(json);
}
_gameStateDictionary = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);
}


private string EncryptDecrypt(string data)
{
string modifiedData = "";
for (int i = 0; i < data.Length; i++)
{
modifiedData += (char)(data[i] ^ encryptionCodeWord[i % encryptionCodeWord.Length]);
}
return modifiedData;
}