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 +1,89 @@
+using System.Buffers.Binary;
+using NResLib;
+
+namespace ParkanPlayground;
+
+/// <summary>
+/// MSH-компонент 0x01: таблица узлов модели.
+/// </summary>
+public static class Msh0x01
+{
+    public static Msh0x01Component ReadComponent(FileStream mshFs, NResArchive archive)
+    {
+        var entry = archive.Files.FirstOrDefault(x => x.FileType == "01 00 00 00");
+
+        if (entry is null)
+        {
+            throw new Exception("Archive doesn't contain node table component (0x01)");
+        }
+
+        if (entry.ElementSize <= 0)
+        {
+            throw new Exception("Node table component (0x01) has invalid element size");
+        }
+
+        if (entry.FileLength % entry.ElementSize != 0)
+        {
+            throw new Exception("Node table component (0x01) payload size is not divisible by element size");
+        }
+
+        var elementCount = entry.FileLength / entry.ElementSize;
+        var data = new byte[entry.FileLength];
+        mshFs.Seek(entry.OffsetInFile, SeekOrigin.Begin);
+        mshFs.ReadExactly(data, 0, data.Length);
+
+        var dataSpan = data.AsSpan();
+
+        var elements = new List<Node>(elementCount);
+        for (var i = 0; i < elementCount; i++)
+        {
+            var baseOffset = i * entry.ElementSize;
+            var rawBytes = dataSpan.Slice(baseOffset, entry.ElementSize).ToArray();
+            var slots = new ushort[15];
+            Array.Fill(slots, ushort.MaxValue);
+            var slotWords = Math.Min(slots.Length, Math.Max(0, (entry.ElementSize - 8) / 2));
+            for (var slotIndex = 0; slotIndex < slotWords; slotIndex++)
+            {
+                slots[slotIndex] =
+                    BinaryPrimitives.ReadUInt16LittleEndian(dataSpan.Slice(baseOffset + 8 + slotIndex * 2));
+            }
+
+            elements.Add(new Node(
+                rawBytes,
+                BinaryPrimitives.ReadUInt16LittleEndian(dataSpan.Slice(baseOffset)),
+                BinaryPrimitives.ReadUInt16LittleEndian(dataSpan.Slice(baseOffset + 2)),
+                BinaryPrimitives.ReadUInt16LittleEndian(dataSpan.Slice(baseOffset + 4)),
+                BinaryPrimitives.ReadUInt16LittleEndian(dataSpan.Slice(baseOffset + 6)),
+                slots));
+        }
+
+        return new Msh0x01Component(elements);
+    }
+
+
+    /// <summary>Результат чтения MSH-компонента 0x01.</summary>
+    /// <param name="Elements">Узлы компонента 0x01.</param>
+    public record Msh0x01Component(List<Node> Elements);
+
+    /// <summary>Узел 0x01.</summary>
+    /// <param name="RawBytes">Сырые байты узла (length = attr3). Нужны для copy-through редких вариантов, например attr3 = 24.</param>
+    /// <param name="Header0">[0x00..0x02] Заголовочное слово узла</param>
+    /// <param name="ParentOrLink">[0x02..0x04] Индекс родителя или связанного узла</param>
+    /// <param name="AnimMapStart">[0x04..0x06] Начало блока в карте анимации Msh0x13 или 0xFFFF</param>
+    /// <param name="FallbackKey">[0x06..0x08] Индекс fallback-ключа в пуле ключей Msh0x08</param>
+    /// <param name="SlotIndex">[0x08..0x26] Индексы slot в Msh0x02 по формуле lod * 5 + group</param>
+    public record Node(
+        byte[] RawBytes,
+        ushort Header0,
+        ushort ParentOrLink,
+        ushort AnimMapStart,
+        ushort FallbackKey,
+        ushort[] SlotIndex)
+    {
+        public ushort ResolveSlotIndex(int lod, int group = 0)
+        {
+            var index = lod * 5 + group;
+            return index >= 0 && index < SlotIndex.Length ? SlotIndex[index] : ushort.MaxValue;
+        }
+    }
+}