Parse cp .dat files. Object schemes.

Test parsing of .msh

Common/Common.csproj

@@ -0,0 +1,3 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+</Project>

Common/Extensions.cs

@@ -0,0 +1,65 @@
+using System.Buffers.Binary;
+using System.Text;
+
+namespace Common;
+
+public static class Extensions
+{
+    public static int ReadInt32LittleEndian(this FileStream fs)
+    {
+        Span<byte> buf = stackalloc byte[4];
+        fs.ReadExactly(buf);
+
+        return BinaryPrimitives.ReadInt32LittleEndian(buf);
+    }
+
+    public static uint ReadUInt32LittleEndian(this FileStream fs)
+    {
+        Span<byte> buf = stackalloc byte[4];
+        fs.ReadExactly(buf);
+
+        return BinaryPrimitives.ReadUInt32LittleEndian(buf);
+    }
+
+    public static float ReadFloatLittleEndian(this FileStream fs)
+    {
+        Span<byte> buf = stackalloc byte[4];
+        fs.ReadExactly(buf);
+
+        return BinaryPrimitives.ReadSingleLittleEndian(buf);
+    }
+
+    public static string ReadNullTerminatedString(this FileStream fs)
+    {
+        var sb = new StringBuilder();
+
+        while (true)
+        {
+            var b = fs.ReadByte();
+            if (b == 0)
+            {
+                break;
+            }
+
+            sb.Append((char)b);
+        }
+
+        return sb.ToString();
+    }
+
+    public static string ReadLengthPrefixedString(this FileStream fs)
+    {
+        var len = fs.ReadInt32LittleEndian();
+
+        if (len == 0)
+        {
+            return "";
+        }
+
+        var buffer = new byte[len];
+
+        fs.ReadExactly(buffer, 0, len);
+
+        return Encoding.ASCII.GetString(buffer, 0, len);
+    }
+}

Common/IndexedEdge.cs

@@ -0,0 +1,3 @@
+namespace Common;
+
+public record IndexedEdge(ushort Index1, ushort Index2);

Common/Vector3.cs

@@ -0,0 +1,3 @@
+namespace Common;
+
+public record Vector3(float X, float Y, float Z);