Question

我正在创建一个基于文本的基础RPG，我正在尝试使用xml来保存游戏。这是从xml调用播放器数据的代码：

public class SuperAdventure() {
    private Player _player;

    private Monster _currentMonster;

    private const string PLAYER_DATA_FILE_NAME = "PlayerData.xml";

    public SuperAdventure()
    {
        InitializeComponent();

        if (File.Exists(PLAYER_DATA_FILE_NAME))
        {
            _player = Player.CreatePlayerFromXmlString(File.ReadAllText(PLAYER_DATA_FILE_NAME));
        }
        else
        {
            _player = Player.CreateDefaultPlayer();
        }

        MoveTo(_player.CurrentLocation);
        UpdatePlayerStats();
    }
}

我也确定正确创建了xml。当我关闭游戏时，我可以手动找到xml。所有统计数据都已保存，但重新打开游戏后，播放器将重置为默认统计数据和项目。我不确定函数调用的顺序是否重要，或者xml的创建是否会影响游戏对xml的使用。

这里是CreatePlayerFromXmlString（）函数：

        public static Player CreatePlayerFromXmlString(string xmlPlayerData)
    {
        try
        {
            XmlDocument playerData = new XmlDocument();

            playerData.LoadXml(xmlPlayerData);

            int currentHitPoints = Convert.ToInt32(playerData.SelectSingleNode("/Player/Stats/CurrentHItPoints").InnerText);
            int maximumHitPoints = Convert.ToInt32(playerData.SelectSingleNode("/Player/Stats/MaximumHitPoints").InnerText);
            int gold = Convert.ToInt32(playerData.SelectSingleNode("/Player/Stats/Gold").InnerText);
            int experiencePoints = Convert.ToInt32(playerData.SelectSingleNode("/Player/Stats/ExperiencePoints").InnerText);

            Player player = new Player(currentHitPoints, maximumHitPoints, gold, experiencePoints);

            int currentLocationID = Convert.ToInt32(playerData.SelectSingleNode("/Player/Stats/CurrentLocation").InnerText);
            player.CurrentLocation = World.LocationByID(currentLocationID);

            foreach (XmlNode node in playerData.SelectNodes("/Player/InventoryItems/InventoryItem"))
            {
                int id = Convert.ToInt32(node.Attributes["ID"].Value);
                int quantity = Convert.ToInt32(node.Attributes["Quantity"].Value);

                for (int i = 0; i < quantity; i++)
                {
                    player.AddItemToInventory(World.ItemByID(id));
                }
            }

            foreach (XmlNode node in playerData.SelectNodes("/Player/PlayerQuests/PlayerQuest"))
            {
                int id = Convert.ToInt32(node.Attributes["ID"].Value);
                bool isCompleted = Convert.ToBoolean(node.Attributes["IsCompleted"].Value);

                PlayerQuest playerQuest = new PlayerQuest(World.QuestByID(id));
                playerQuest.IsCompleted = isCompleted;

                player.Quests.Add(playerQuest);
            }

            return player;
        }
        catch
        {
            //If there was an error with the XML data, return a default player object
            return Player.CreateDefaultPlayer();
        }
    }

Answer 1

问题是当游戏通过try代码块时出现错误。这导致它移动到catch块并改为创建默认播放器。搜索currentHitPoints的代码行中的字符串拼写错误 - visual studio没有将其视为错误，因为它是传递给XML函数的字符串。

int currentHitPoints = Convert.ToInt32(playerData.SelectSingleNode("/Player/Stats/CurrentHItPoints").InnerText);

"/Player/Stats/CurrentHItPoints"应为"/Player/Stats/CurrentHitPoints"

如何让C＃代码在基本游戏中读取XML文件

1 个答案: