baseline: OpenMU upstream b5a0961 (fresh source)

src/GameLogic/PlugIns/SymbolOfKundunStackedPlugIn.cs

@@ -0,0 +1,43 @@
+// <copyright file="SymbolOfKundunStackedPlugIn.cs" company="MUnique">
+// Licensed under the MIT License. See LICENSE file in the project root for full license information.
+// </copyright>
+
+namespace MUnique.OpenMU.GameLogic.PlugIns;
+
+using System.Runtime.InteropServices;
+using MUnique.OpenMU.PlugIns;
+
+/// <summary>
+/// This plugin transforms a stack of symbol of kundun into a lost map.
+/// </summary>
+[PlugIn]
+[Display(Name = nameof(SymbolOfKundunStackedPlugIn), Description = "This plugin transforms a stack of symbol of kundun into a lost map.")]
+[Guid("F07A9CED-F43E-4824-9587-F5C3C3187A13")]
+public sealed class SymbolOfKundunStackedPlugIn : IItemStackedPlugIn
+{
+    /// <inheritdoc />
+    public async ValueTask ItemStackedAsync(Player player, Item sourceItem, Item targetItem)
+    {
+        if (!targetItem.IsSymbolOfKundun())
+        {
+            return;
+        }
+
+        if (targetItem.Durability() < targetItem.Definition?.Durability)
+        {
+            return;
+        }
+
+        var lostMap = player.GameContext.Configuration.Items.FirstOrDefault(item => item.IsLostMap());
+        if (lostMap is null)
+        {
+            player.Logger.LogWarning("Lost map definition not found.");
+            return;
+        }
+
+        await player.InvokeViewPlugInAsync<Views.Inventory.IItemRemovedPlugIn>(p => p.RemoveItemAsync(targetItem.ItemSlot)).ConfigureAwait(false);
+        targetItem.Definition = lostMap;
+        targetItem.Durability = 1;
+        await player.InvokeViewPlugInAsync<Views.Inventory.IItemAppearPlugIn>(p => p.ItemAppearAsync(targetItem)).ConfigureAwait(false);
+    }
+}