fpopov thanks

2026-08-15 02:57:49 +04:00 · 2026-05-09 20:36:43 +03:00
parent d73a6dde70
commit eb458ad9a8
43 changed files with 1562 additions and 1233 deletions
@@ -0,0 +1,73 @@
+using System.Buffers.Binary;
+using NResLib;
+
+namespace ParkanPlayground;
+
+/// <summary>
+/// MSH-компонент 0x15: terrain-таблица треугольников
+/// </summary>
+public static class Msh0x15
+{
+    public static List<TerrainTriangle> 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)");
+        }
+
+        if (entry.ElementSize != 28)
+        {
+            throw new Exception("Terrain triangle component (0x15) element size is not 28");
+        }
+
+        if (entry.FileLength % entry.ElementSize != 0)
+        {
+            throw new Exception("Terrain triangle component (0x15) payload size is not divisible by element size");
+        }
+
+        var data = new byte[entry.FileLength];
+        mshFs.Seek(entry.OffsetInFile, SeekOrigin.Begin);
+        mshFs.ReadExactly(data, 0, data.Length);
+
+        var elementBytes = data.Chunk(28);
+
+        var elements = elementBytes.Select(x => new TerrainTriangle(
+            BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(0)),
+            BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(4)),
+            BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(8)),
+            BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(10)),
+            BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(12)),
+            BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(14)),
+            BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(18)),
+            BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(22)),
+            BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(26)))).ToList();
+
+        return elements;
+    }
+
+    /// <summary>Terrain-треугольник 0x15 (length = 0x1C)</summary>
+    /// <param name="Flags">[0x00..0x04] Флаги треугольника для terrain path</param>
+    /// <param name="MaterialData">[0x04..0x08] Данные материала terrain</param>
+    /// <param name="Vertex1Index">[0x08..0x0A] Индекс первой вершины в position stream Msh0x03</param>
+    /// <param name="Vertex2Index">[0x0A..0x0C] Индекс второй вершины в position stream Msh0x03</param>
+    /// <param name="Vertex3Index">[0x0C..0x0E] Индекс третьей вершины в position stream Msh0x03</param>
+    /// <param name="Opaque0E">[0x0E..0x12] Opaque поле</param>
+    /// <param name="Opaque12">[0x12..0x16] Opaque поле</param>
+    /// <param name="Opaque16">[0x16..0x1A] Opaque поле</param>
+    /// <param name="Opaque1A">[0x1A..0x1C] Opaque поле</param>
+    public readonly record struct TerrainTriangle(
+        uint Flags,
+
+        uint MaterialData,
+        ushort Vertex1Index,
+        ushort Vertex2Index,
+        ushort Vertex3Index,
+        
+        uint Opaque0E,
+        uint Opaque12,
+        uint Opaque16,
+        ushort Opaque1A);
+}