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 +1,88 @@
+using System;
+using System.Buffers.Binary;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace PCL.Core.Utils.Hash;
+
+public class MurmurHash2Provider : IHashProvider
+{
+    public static MurmurHash2Provider Instance { get; } = new();
+    public int Length => 8;
+
+    public byte[] ComputeHash(ReadOnlySpan<byte> data)
+    {
+        var filtered = new List<byte>(data.Length);
+        foreach (var b in data)
+            if (b != 9 && b != 10 && b != 13 && b != 32)
+                filtered.Add(b);
+        return _ComputeHash(CollectionsMarshal.AsSpan(filtered));
+    }
+
+    public byte[] ComputeHash(string input, Encoding? encoding = null)
+    {
+        encoding ??= Encoding.UTF8;
+        return ComputeHash(encoding.GetBytes(input));
+    }
+
+    public byte[] ComputeHash(Stream input)
+    {
+        using var ms = new MemoryStream();
+        input.CopyTo(ms);
+        return ComputeHash(ms.GetBuffer().AsSpan(0, (int)ms.Length));
+    }
+
+    public async ValueTask<byte[]> ComputeHashAsync(Stream input, CancellationToken cancellationToken = default)
+    {
+        using var ms = new MemoryStream();
+        await input.CopyToAsync(ms, cancellationToken).ConfigureAwait(false);
+        return ComputeHash(ms.GetBuffer().AsSpan(0, (int)ms.Length));
+    }
+
+    private static byte[] _ComputeHash(ReadOnlySpan<byte> data)
+    {
+        var h = (uint)(1 ^ data.Length);
+        var i = 0;
+        var loopTo = data.Length - 4;
+
+        for (; i <= loopTo; i += 4)
+        {
+            var k = data[i]
+                 | ((uint)data[i + 1] << 8)
+                 | ((uint)data[i + 2] << 16)
+                 | ((uint)data[i + 3] << 24);
+            k *= 0x5BD1E995;
+            k ^= k >> 24;
+            k *= 0x5BD1E995;
+            h *= 0x5BD1E995;
+            h ^= k;
+        }
+
+        switch (data.Length - i)
+        {
+            case 3:
+                h ^= (uint)(data[i] | ((uint)data[i + 1] << 8));
+                h ^= (uint)data[i + 2] << 16;
+                h *= 0x5BD1E995;
+                break;
+            case 2:
+                h ^= (uint)(data[i] | ((uint)data[i + 1] << 8));
+                h *= 0x5BD1E995;
+                break;
+            case 1:
+                h ^= data[i];
+                h *= 0x5BD1E995;
+                break;
+        }
+
+        h ^= h >> 13;
+        h *= 0x5BD1E995;
+        h ^= h >> 15;
+
+        return BitConverter.GetBytes(h);
+    }
+}