feat(combat): Phase L.1c wire live attack input

src/AcDream.Core.Net/Messages/CreateObject.cs

@@ -25,13 +25,13 @@ namespace AcDream.Core.Net.Messages;
 /// </list>
 ///
 /// <para>
-/// All other fields (weenie header, object description, motion tables,
+/// Most other fields (extended weenie header, object description, motion tables,
 /// palettes, texture overrides, animation frames, velocity, ...) are
 /// consumed-but-ignored so the parse position ends up wherever the
 /// client-side caller wanted — a <c>Parse</c> call doesn't need to reach
-/// the end of the body to return useful output. We stop after PhysicsData
-/// since that's the last segment containing fields acdream cares about
-/// in this phase.
+/// the end of the body to return useful output. We read through the fixed
+/// WeenieHeader prefix for Name/ItemType, then stop before optional header
+/// tails.
 /// </para>
 ///
 /// <para>
@@ -51,6 +51,8 @@ public static class CreateObject
     public const uint PaletteTypePrefix = 0x04000000u;
     /// <summary>SurfaceTexture dat id type prefix.</summary>
     public const uint SurfaceTextureTypePrefix = 0x05000000u;
+    /// <summary>Icon dat id type prefix.</summary>
+    public const uint IconTypePrefix = 0x06000000u;
 
     [Flags]
     public enum PhysicsDescriptionFlag : uint
@@ -78,9 +80,9 @@ public static class CreateObject
     }
 
     /// <summary>
-    /// The three fields acdream cares about. Position and SetupTableId are
-    /// nullable because their corresponding physics-description-flag bits
-    /// may not be set on every CreateObject.
+    /// The spawn fields acdream currently cares about. Position and
+    /// SetupTableId are nullable because their corresponding
+    /// physics-description-flag bits may not be set on every CreateObject.
     /// </summary>
     public readonly record struct Parsed(
         uint Guid,
@@ -92,6 +94,7 @@ public static class CreateObject
         uint? BasePaletteId,
         float? ObjScale,
         string? Name,
+        uint? ItemType,
         ServerMotionState? MotionState,
         uint? MotionTableId,
         ushort InstanceSequence = 0,
@@ -390,27 +393,39 @@ public static class CreateObject
             pos += 9 * 2;
             AlignTo4(ref pos);
 
-            // --- WeenieHeader: read just the Name field (second after flags). ---
+            // --- WeenieHeader: read the fixed prefix fields we need. ---
+            // ACE WorldObject_Networking.SerializeCreateObject writes:
+            //   weenieFlags, Name, WeenieClassId(PackedDword),
+            //   IconId(PackedDwordOfKnownType 0x06000000), ItemType,
+            //   ObjectDescriptionFlags, align.
             string? name = null;
+            uint? itemType = null;
             if (body.Length - pos >= 4)
             {
                 pos += 4;  // skip weenieFlags u32
                 try
                 {
                     name = ReadString16L(body, ref pos);
+                    _ = ReadPackedDword(body, ref pos);  // WeenieClassId
+                    _ = ReadPackedDwordOfKnownType(body, ref pos, IconTypePrefix);
+                    if (body.Length - pos >= 4)
+                        itemType = ReadU32(body, ref pos);
+                    if (body.Length - pos >= 4)
+                        _ = ReadU32(body, ref pos);  // ObjectDescriptionFlags
+                    AlignTo4(ref pos);
                 }
                 catch { /* truncated name — partial result is still useful */ }
             }
 
             return new Parsed(guid, position, setupTableId, animParts,
-                textureChanges, subPalettes, basePaletteId, objScale, name, motionState, motionTableId,
+                textureChanges, subPalettes, basePaletteId, objScale, name, itemType, motionState, motionTableId,
                 instanceSeq, teleportSeq, serverControlSeq, forcePositionSeq);
 
             // Local helper: if we ran out of fields past PhysicsData, still
             // return the useful prefix (guid/position/setup/animParts/textures/palettes/scale/motion).
             Parsed PartialResult() => new(
                 guid, position, setupTableId, animParts,
-                textureChanges, subPalettes, basePaletteId, objScale, null, motionState, motionTableId);
+                textureChanges, subPalettes, basePaletteId, objScale, null, null, motionState, motionTableId);
         }
         catch
         {

src/AcDream.Core.Net/WorldSession.cs

@@ -54,6 +54,7 @@ public sealed class WorldSession : IDisposable
         uint? BasePaletteId,
         float? ObjScale,
         string? Name,
+        uint? ItemType,
         CreateObject.ServerMotionState? MotionState,
         uint? MotionTableId);
 
@@ -635,6 +636,7 @@ public sealed class WorldSession : IDisposable
                         parsed.Value.BasePaletteId,
                         parsed.Value.ObjScale,
                         parsed.Value.Name,
+                        parsed.Value.ItemType,
                         parsed.Value.MotionState,
                         parsed.Value.MotionTableId));
                 }