improvements

ParkanPlayground/Msh15.cs

@@ -0,0 +1,55 @@
+using System.Buffers.Binary;
+using NResLib;
+
+namespace ParkanPlayground;
+
+public static class Msh15
+{
+    public static List<Msh15Element> ReadComponent(
+        FileStream mshFs, NResArchive archive)
+    {
+        var entry = archive.Files.FirstOrDefault(x => x.FileType == "15 00 00 00");
+
+        if (entry is null)
+        {
+            throw new Exception("Archive doesn't contain file (15)");
+        }
+
+        var data = new byte[entry.ElementCount * entry.ElementSize];
+        mshFs.Seek(entry.OffsetInFile, SeekOrigin.Begin);
+        mshFs.ReadExactly(data, 0, data.Length);
+
+        var elementBytes = data.Chunk(28);
+
+        var elements = elementBytes.Select(x => new Msh15Element()
+        {
+            Flags = BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(0)),
+            Magic04 = BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(4)),
+            Vertex1Index = BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(8)),
+            Vertex2Index = BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(10)),
+            Vertex3Index = BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(12)),
+            Magic0E = BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(14)),
+            Magic12 = BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(18)),
+            Magic16 = BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(22)),
+            Magic1A = BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(26)),
+            
+        }).ToList();
+
+        return elements;
+    }
+
+    public class Msh15Element
+    {
+        public uint Flags { get; set; }
+
+        public uint Magic04 { get; set; }
+        public ushort Vertex1Index { get; set; }
+        public ushort Vertex2Index { get; set; }
+        public ushort Vertex3Index { get; set; }
+        
+        public uint Magic0E { get; set; }
+        public uint Magic12 { get; set; }
+        public uint Magic16 { get; set; }
+        public ushort Magic1A { get; set; }
+    }
+}