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
2026-08-08 14:07:56 +08:00
parent 9500c4c80a
commit f70b061d1a
1972 changed files with 159760 additions and 6 deletions
@@ -0,0 +1,202 @@
+using System;
+using System.ComponentModel;
+using System.Runtime.InteropServices;
+using System.Windows;
+using System.Windows.Interop;
+
+namespace PCL.Core.Utils.OS;
+
+// ReSharper disable InconsistentNaming
+public partial class DragHelper
+{
+    public event EventHandler? DragDrop;
+
+    public string[]? DropFilePaths { get; private set; }
+    public Point DropDragPoint { get; private set; }
+
+    public HwndSource? HwndSource { get; set; }
+
+    #region Public API
+
+    public void AddHook()
+    {
+        if (HwndSource is null)
+            throw new InvalidOperationException("HwndSource 未设置");
+
+        RemoveHook();
+
+        HwndSource.AddHook(WndProc);
+        IntPtr hwnd = HwndSource.Handle;
+
+        if (IsUserAnAdmin())
+            RevokeDragDrop(hwnd);
+
+        DragAcceptFiles(hwnd, true);
+        ChangeMessageFilter(hwnd);
+    }
+
+    public void RemoveHook()
+    {
+        if (HwndSource is null)
+            return;
+
+        HwndSource.RemoveHook(WndProc);
+        DragAcceptFiles(HwndSource.Handle, false);
+    }
+
+    #endregion
+
+    #region WndProc
+
+    private IntPtr WndProc(
+        IntPtr hwnd,
+        int msg,
+        IntPtr wParam,
+        IntPtr lParam,
+        ref bool handled)
+    {
+        if (TryGetDropInfo(msg, wParam, out var files, out var pt))
+        {
+            DropFilePaths = files;
+            DropDragPoint = new Point(pt.X, pt.Y);
+            DragDrop?.Invoke(this, EventArgs.Empty);
+            handled = true;
+        }
+
+        return IntPtr.Zero;
+    }
+
+    #endregion
+
+    #region Message filter (UAC)
+
+    private static unsafe void ChangeMessageFilter(IntPtr hwnd)
+    {
+        var ver = Environment.OSVersion.Version;
+        if (ver < new Version(6, 0))
+            return;
+
+        var win7OrHigher = ver >= new Version(6, 1);
+
+        var filter = new CHANGEFILTERSTRUCT
+        {
+            cbSize = (uint)sizeof(CHANGEFILTERSTRUCT)
+        };
+
+        uint[] messages = [
+            WM_DROPFILES,
+            WM_COPYGLOBALDATA,
+            WM_COPYDATA
+        ];
+
+        foreach (var msg in messages)
+        {
+            var ok = win7OrHigher
+                ? ChangeWindowMessageFilterEx(hwnd, msg, MSGFLT_ALLOW, ref filter)
+                : ChangeWindowMessageFilter(msg, MSGFLT_ADD);
+
+            if (!ok) throw new Win32Exception(Marshal.GetLastWin32Error());
+        }
+    }
+
+    #endregion
+
+    #region Drop parsing
+
+    private static bool TryGetDropInfo(
+        int msg,
+        IntPtr hDrop,
+        out string[]? filePaths,
+        out DragPoint dropPoint)
+    {
+        filePaths = null;
+        dropPoint = default;
+
+        if (msg != WM_DROPFILES)
+            return false;
+
+        var count = DragQueryFile(hDrop, uint.MaxValue, IntPtr.Zero, 0);
+        filePaths = new string[count];
+
+        const int maxPath = 32768, smallerMaxPath = 1024;
+
+        Span<char> gBuffer = stackalloc char[smallerMaxPath];
+        for (uint i = 0; i < count; i++)
+        {
+            var len = DragQueryFile(hDrop, i, IntPtr.Zero, 0) + 1;
+            if (len > maxPath) len = maxPath;
+            var buffer = len <= smallerMaxPath ? gBuffer[..(int)len] : new char[len];
+            _ = DragQueryFile(hDrop, i, buffer, len);
+            filePaths[i] = new string(buffer[..(int)(len - 1)]);
+        }
+
+        DragFinish(hDrop);
+        return true;
+    }
+
+    #endregion
+
+    #region Win32
+
+    private const uint WM_COPYGLOBALDATA = 0x0049;
+    private const uint WM_COPYDATA = 0x004A;
+    private const uint WM_DROPFILES = 0x0233;
+
+    private const uint MSGFLT_ALLOW = 1;
+    private const uint MSGFLT_ADD = 1;
+
+    [LibraryImport("user32.dll", SetLastError = true)]
+    [return: MarshalAs(UnmanagedType.Bool)]
+    private static partial bool ChangeWindowMessageFilter(
+        uint msg,
+        uint flags);
+
+    [LibraryImport("user32.dll", SetLastError = true)]
+    [return: MarshalAs(UnmanagedType.Bool)]
+    private static partial bool ChangeWindowMessageFilterEx(
+        IntPtr hwnd,
+        uint msg,
+        uint action,
+        ref CHANGEFILTERSTRUCT filter);
+
+    [LibraryImport("shell32.dll")]
+    private static partial void DragAcceptFiles(
+        IntPtr hwnd,
+        [MarshalAs(UnmanagedType.Bool)] bool accept);
+
+    [LibraryImport("shell32.dll", EntryPoint = "DragQueryFileW", StringMarshalling = StringMarshalling.Utf16)]
+    private static partial uint DragQueryFile(IntPtr hDrop, uint iFile, Span<char> lpszFile, uint cch);
+    
+    [LibraryImport("shell32.dll", EntryPoint = "DragQueryFileW")]
+    private static partial uint DragQueryFile(IntPtr hDrop, uint iFile, IntPtr lpszFile, uint cch);
+
+    [LibraryImport("shell32.dll")]
+    private static partial void DragFinish(IntPtr hDrop);
+
+    [LibraryImport("ole32.dll")]
+    private static partial int RevokeDragDrop(IntPtr hwnd);
+
+    [LibraryImport("shell32.dll")]
+    [return: MarshalAs(UnmanagedType.Bool)]
+    private static partial bool IsUserAnAdmin();
+
+    #endregion
+
+    #region Structs
+
+    [StructLayout(LayoutKind.Sequential)]
+    private struct DragPoint
+    {
+        public int X;
+        public int Y;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    private struct CHANGEFILTERSTRUCT
+    {
+        public uint cbSize;
+        public uint ExtStatus;
+    }
+
+    #endregion
+}