feat: 项目初始化 + 3D方块世界原型 + AI助搭系统

初始化 monorepo: Go后端(7微服务) + Unity客户端(9模块) + 启动器

HTML5原型: Three.js 3D体素世界, Perlin噪声地形, 原版材质, 22种方块

Minecraft创造模式背包: 双栏布局, 拖拽移动物品, 方向性元件引脚

AI助搭策划文档 + 客户端/服务端骨架 + Docker Compose + CI

launcher/PCL-CE/Plain Craft Launcher 2/Controls/MyVirtualizingElement.cs

@@ -0,0 +1,85 @@
+using System.Windows;
+using System.Windows.Controls;
+
+namespace PCL;
+
+public class MyVirtualizingElement<T> : FrameworkElement where T : FrameworkElement
+{
+    private readonly Func<T> _initializer;
+
+    public MyVirtualizingElement(Func<T> initializer)
+    {
+        _initializer = initializer;
+        this.EnableLazyLoad(() => Init());
+    }
+
+    /// <summary>
+    ///     实例化此控件。
+    /// </summary>
+    public T Init()
+    {
+        var element = _initializer();
+        if (Parent is not null)
+        {
+            if (Parent is not Panel)
+                throw new Exception("MyVirtualizingElement 的父级必须是一个 Panel");
+            var parentPanel = (Panel)Parent;
+            var currentIndex = parentPanel.Children.IndexOf(this);
+            parentPanel.Children.RemoveAt(currentIndex);
+            parentPanel.Children.Insert(currentIndex, element);
+        }
+
+        return element;
+    }
+
+    public static implicit operator T(MyVirtualizingElement<T> virtualized)
+    {
+        return virtualized.Init();
+    }
+}
+
+// 非泛型形式
+public class MyVirtualizingElement : FrameworkElement
+{
+    private readonly Func<FrameworkElement> _initializer;
+
+    public MyVirtualizingElement(Func<FrameworkElement> initializer)
+    {
+        _initializer = initializer;
+        this.EnableLazyLoad(() => Init());
+    }
+
+    /// <summary>
+    ///     实例化此控件。
+    /// </summary>
+    public FrameworkElement Init()
+    {
+        var element = _initializer();
+        if (Parent is not null)
+        {
+            if (Parent is not Panel)
+                throw new Exception("MyVirtualizingElement 的父级必须是一个 Panel");
+            var parentPanel = (Panel)Parent;
+            var currentIndex = parentPanel.Children.IndexOf(this);
+            parentPanel.Children.RemoveAt(currentIndex);
+            parentPanel.Children.Insert(currentIndex, element);
+        }
+
+        return element;
+    }
+
+    /// <summary>
+    ///     获取实例化后的控件。
+    ///     如果该控件没有实例化，则会立即实例化。
+    ///     如果类型错误，则返回原值。
+    /// </summary>
+    public static FrameworkElement TryInit(FrameworkElement element)
+    {
+        if (typeof(MyVirtualizingElement<>).IsInstanceOfGenericType(element))
+        {
+            var method = element.GetType().GetMethod("Init", Type.EmptyTypes);
+            return (FrameworkElement)method.Invoke(element, null);
+        }
+        return element is MyVirtualizingElement ? ((MyVirtualizingElement)element).Init() : element;
+    }
+}