OnItemSplit

NWN.Anvil/src/main/API/Events/Native/ItemEvents/OnItemSplit.cs

@@ -0,0 +1,70 @@
+using System;
+using System.Runtime.InteropServices;
+using Anvil.API.Events;
+using Anvil.Native;
+using Anvil.Services;
+using NWN.Native.API;
+
+namespace Anvil.API.Events
+{
+  public sealed class OnItemSplit : IEvent
+  {
+    /// <summary>
+    /// Gets the item being split.
+    /// </summary>
+    public NwItem ItemToSplit { get; private init; } = null!;
+
+    /// <summary>
+    /// Gets the number of items being split from the stack.
+    /// </summary>
+    public int NumberToSplitOff { get; private init; }
+
+    NwObject IEvent.Context => ItemToSplit;
+
+    public sealed unsafe class Factory : HookEventFactory
+    {
+      private static FunctionHook<Functions.CNWSItem.ItemSplit> Hook { get; set; } = null!;
+
+      protected override IDisposable[] RequestHooks()
+      {
+        delegate* unmanaged<void*, int, void> pHook = &OnItemSplit;
+        Hook = HookService.RequestHook<Functions.CNWSItem.ItemSplit>(pHook, HookOrder.Early);
+        return [Hook];
+      }
+
+      [UnmanagedCallersOnly]
+      private static void OnItemSplit(void* pItem, int splitOff)
+      {
+        OnItemSplit eventData = ProcessEvent(EventCallbackType.Before, new OnItemSplit
+        {
+          NumberToSplitOff = splitOff,
+          ItemToSplit = CNWSItem.FromPointer(pItem).ToNwObject<NwItem>()!,
+        });
+        ProcessEvent(EventCallbackType.After, eventData);
+      }
+    }
+  }
+}
+
+namespace Anvil.API
+{
+  public sealed partial class NwCreature
+  {
+    /// <inheritdoc cref="Events.OnItemSplit"/>
+    public event Action<OnItemSplit> OnItemSplit
+    {
+      add => EventService.Subscribe<OnItemSplit, OnItemSplit.Factory>(this, value);
+      remove => EventService.Unsubscribe<OnItemSplit, OnItemSplit.Factory>(this, value);
+    }
+  }
+
+  public sealed partial class NwModule
+  {
+    /// <inheritdoc cref="Events.OnItemSplit"/>
+    public event Action<OnItemSplit> OnItemSplit
+    {
+      add => EventService.SubscribeAll<OnItemSplit, OnItemSplit.Factory>(value);
+      remove => EventService.UnsubscribeAll<OnItemSplit, OnItemSplit.Factory>(value);
+    }
+  }
+}

NWN.Anvil/src/main/Native/Functions/Functions.CNWSItem.cs

@@ -18,6 +18,9 @@ public static class CNWSItem
 
       [NativeFunction("_ZN8CNWSItem13OpenInventoryEj", "?OpenInventory@CNWSItem@@QEAAXI@Z")]
       public delegate void OpenInventory(void* pItem, uint oidOpener);
+
+      [NativeFunction("_ZN8CNWSItem9SplitItemEi", "*")]
+      public delegate void ItemSplit(void* pItemToSplit, int nNumberToSplitOff);
     }
   }
 }