msh and cp converters. Mesh broken.

ParkanPlayground/Msh0D.cs

@@ -0,0 +1,48 @@
+using System.Buffers.Binary;
+using NResLib;
+
+namespace ParkanPlayground;
+
+public static class Msh0D
+{
+    public const int ElementSize = 20;
+    
+    public static List<Msh0DElement> ReadComponent(
+        FileStream mshFs, NResArchive archive)
+    {
+        var entry = archive.Files.FirstOrDefault(x => x.FileType == "0D 00 00 00");
+
+        if (entry is null)
+        {
+            throw new Exception("Archive doesn't contain file (0D)");
+        }
+
+        var data = new byte[entry.ElementCount * entry.ElementSize];
+        mshFs.Seek(entry.OffsetInFile, SeekOrigin.Begin);
+        mshFs.ReadExactly(data, 0, data.Length);
+
+        var elementBytes = data.Chunk(ElementSize);
+
+        var elements = elementBytes.Select(x => new Msh0DElement()
+        {
+            Flags = BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(0)),
+            Magic04 = BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(4)),
+            number_of_triangles = BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(8)),
+            IndexInto06 = BinaryPrimitives.ReadInt32LittleEndian(x.AsSpan(10)),
+            Magic0C = BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(14)),
+            IndexInto03 = BinaryPrimitives.ReadInt32LittleEndian(x.AsSpan(16)),
+        }).ToList();
+
+        return elements;
+    }
+
+    public class Msh0DElement
+    {
+        public uint Flags { get; set; }
+        public uint Magic04 { get; set; }
+        public ushort number_of_triangles { get; set; }
+        public int IndexInto06 { get; set; }
+        public ushort Magic0C { get; set; }
+        public int IndexInto03 { get; set; }
+    }
+}