2. 创建配置编辑器

现在我们需要为上一章定义的 CharacterConfig 创建对应的编辑器。

我们创建名为 "CharacterConfigEditor" 的编辑器类， 并从 winS.UnityEditor.ConfigManagement.ConfigsEditor 继承：

CharacterConfigEditor.cs

using UnityEngine.UIElements;
using winS.UnityEditor.ConfigManagement;

public class CharacterConfigEditor : ConfigsEditor<CharacterConfig>
{
    protected override string directory { get; }

    protected override void OnConfigLoaded(CharacterConfig config)
    {
        throw new System.NotImplementedException();
    }

    protected override void OnCreateGUI(VisualElement content)
    {
        throw new System.NotImplementedException();
    }
}

通过上述代码可以看到，winS.UnityEditor.ConfigManagement.ConfigsEditor 要求子类实现：

• directory 表明配置文件储存的目录(基于项目目录)。
• OnConfigLoaded 当前编辑的配置文件变动时的回调。
• OnCreateGUI 在此处创建您的配置文件的GUI。

我们简单实现此编辑器，代码如下：

CharacterConfigEditor.cs

using UnityEditor;
using UnityEngine.UIElements;
using winS.UnityEditor.ConfigManagement;
using winS.UnityEditor.GUI;
using winS.UnityEditor.UIElement;
using static CharacterConfig;
using FloatField = winS.UnityEditor.UIElement.FloatField;
using Slider = winS.UnityEditor.UIElement.Slider;
using TextField = winS.UnityEditor.UIElement.TextField;
using Toggle = winS.UnityEditor.UIElement.Toggle;

public sealed class CharacterConfigEditor : ConfigsEditor<CharacterConfig>
{
    protected override string directory => "Assets/Configs/CharacterConfig";

    private Toggle botToggle;
    private IntField hpField;
    private IntField mpField;
    private TextField nameField;
    private FloatField attackField;
    private FloatField defenseField;
    private Slider criticalSlider;
    private EnumField<ProfessionType> professionField;

    private ListView<string> skillListView;

    [MenuItem("Example/Window/Character Config Editor")]
    private static void Open()
    {
        GetWindow<CharacterConfigEditor>("Character Config Editor");
    }

    protected override void OnConfigLoaded(CharacterConfig config)
    {
        hpField.SetValueWithoutNotify(config.hp);
        mpField.SetValueWithoutNotify(config.mp);
        botToggle.SetValueWithoutNotify(config.bot);
        nameField.SetValueWithoutNotify(config.name);
        attackField.SetValueWithoutNotify(config.attack);
        defenseField.SetValueWithoutNotify(config.defense);
        criticalSlider.SetValueWithoutNotify(config.critical);
        professionField.SetValueWithoutNotify(config.professionType);
        skillListView.SetData(config.skillNameList);
    }

    protected override void OnCreateGUI(VisualElement content)
    {
        GUIUtility.factory.SetLabelWidth(49f);

        nameField = content.AddElement(GUIUtility.factory.CreateTextField("Name", newValue => config.name = newValue));
        professionField = content.AddElement(GUIUtility.factory.CreateEnumField<ProfessionType>("Class", newValue => config.professionType = newValue));

        hpField = content.AddElement(GUIUtility.factory.CreateIntField("HP", newValue => config.hp = newValue));
        mpField = content.AddElement(GUIUtility.factory.CreateIntField("MP", newValue => config.mp = newValue));
        botToggle = content.AddElement(GUIUtility.factory.CreateToggle("Bot", newValue => config.bot = newValue));

        attackField = content.AddElement(GUIUtility.factory.CreateFloatField("Attack", newValue => config.attack = newValue));
        defenseField = content.AddElement(GUIUtility.factory.CreateFloatField("Defense", newValue => config.defense = newValue));
        criticalSlider = content.AddElement(GUIUtility.factory.CreateSlider("Critical", newValue => config.critical = newValue));

        GUIUtility.factory.ResetLabelWidth();

        Panel skillPanel = content.AddElement(GUIUtility.factory.CreatePanel("Skill"));
        skillListView = skillPanel.AddElement(GUIUtility.factory.CreateListView<string>((item, index) => GUIUtility.factory.CreateTextField("Skill name", newValue => config.skillNameList[index] = newValue)));
        skillPanel.AddElement(GUIUtility.factory.CreateAddButton("New Skill", () => skillListView.AddItem(string.Empty)));
    }
}

在上述代码中，我们通过directory属性指定 "Assets/Configs/CharacterConfig" 作为配置文件的保存目录。

在OnCreateGUI方法中，我们借助 winS.UnityEditor.GUI 扩展包的API来绘制对应的编辑器GUI。

同时，我们定义了一个静态方法Open并为其指定UnityEditor.MenuItem特性。 这使得我们可以通过菜单项 "Example/Window/Character Config Editor" 来打开编辑器。