baseline: OpenMU upstream b5a0961 (fresh source)

src/Persistence/Initialization/Updates/AddCrestOfMonarchDropGroupUpdateSeason6.cs

@@ -0,0 +1,81 @@
+// <copyright file="AddCrestOfMonarchDropGroupUpdateSeason6.cs" company="MUnique">
+// Licensed under the MIT License. See LICENSE file in the project root for full license information.
+// </copyright>
+
+namespace MUnique.OpenMU.Persistence.Initialization.Updates;
+
+using System.Runtime.InteropServices;
+using MUnique.OpenMU.DataModel.Configuration;
+using MUnique.OpenMU.Persistence.Initialization.VersionSeasonSix.Maps;
+using MUnique.OpenMU.PlugIns;
+
+/// <summary>
+/// This update adds the Crest of Monarch drop item group for the Icarus map.
+/// </summary>
+[PlugIn]
+[Display(Name = PlugInName, Description = PlugInDescription)]
+[Guid("FF14A478-3EA8-4C41-A298-8E6698D5973D")]
+public class AddCrestOfMonarchDropGroupUpdateSeason6 : UpdatePlugInBase
+{
+    /// <summary>
+    /// The plug in name.
+    /// </summary>
+    internal const string PlugInName = "Add Crest of Monarch Drop Group";
+
+    /// <summary>
+    /// The plug in description.
+    /// </summary>
+    internal const string PlugInDescription = "Adds the Crest of Monarch (Loch's Feather +1) drop item group to Icarus.";
+
+    /// <inheritdoc />
+    public override UpdateVersion Version => UpdateVersion.AddCrestOfMonarchDropGroupSeason6;
+
+    /// <inheritdoc />
+    public override string DataInitializationKey => VersionSeasonSix.DataInitialization.Id;
+
+    /// <inheritdoc />
+    public override string Name => PlugInName;
+
+    /// <inheritdoc />
+    public override string Description => PlugInDescription;
+
+    /// <inheritdoc />
+    public override bool IsMandatory => true;
+
+    /// <inheritdoc />
+    public override DateTime CreatedAt => new(2026, 03, 13, 12, 0, 0, DateTimeKind.Utc);
+
+    /// <inheritdoc />
+#pragma warning disable CS1998
+    protected override async ValueTask ApplyAsync(IContext context, GameConfiguration gameConfiguration)
+#pragma warning restore CS1998
+    {
+        var map = gameConfiguration.Maps.First(m => m.Number == Icarus.Number && m.Discriminator == 0);
+        var lochsFeather = gameConfiguration.Items.First(item => item.Group == 13 && item.Number == 14);
+        var crestId = GuidHelper.CreateGuid<DropItemGroup>(Icarus.Number, 2);
+
+        var crestGroup = gameConfiguration.DropItemGroups.FirstOrDefault(group => group.GetId() == crestId);
+        if (crestGroup is null)
+        {
+            crestGroup = context.CreateNew<DropItemGroup>();
+            crestGroup.SetGuid(Icarus.Number, 2);
+            gameConfiguration.DropItemGroups.Add(crestGroup);
+        }
+
+        crestGroup.Description = "Crest of Monarch";
+        crestGroup.Chance = 0.001;
+        crestGroup.MinimumMonsterLevel = 82;
+        crestGroup.MaximumMonsterLevel = null;
+        crestGroup.ItemLevel = 1;
+        if (crestGroup.PossibleItems.Count != 1 || crestGroup.PossibleItems.First().GetItemId() != lochsFeather.GetItemId())
+        {
+            crestGroup.PossibleItems.Clear();
+            crestGroup.PossibleItems.Add(lochsFeather);
+        }
+
+        if (!map.DropItemGroups.Any(group => group.GetId() == crestGroup.GetId()))
+        {
+            map.DropItemGroups.Add(crestGroup);
+        }
+    }
+}