baseline: OpenMU upstream b5a0961 (fresh source)

src/GameServer/RemoteView/Quest/QuestEventResponsePlugIn.cs

@@ -0,0 +1,59 @@
+// <copyright file="QuestEventResponsePlugIn.cs" company="MUnique">
+// Licensed under the MIT License. See LICENSE file in the project root for full license information.
+// </copyright>
+
+namespace MUnique.OpenMU.GameServer.RemoteView.Quest;
+
+using System.Runtime.InteropServices;
+using MUnique.OpenMU.GameLogic.Views.Quest;
+using MUnique.OpenMU.Network;
+using MUnique.OpenMU.Network.Packets.ServerToClient;
+using MUnique.OpenMU.PlugIns;
+
+/// <summary>
+/// The default implementation of the <see cref="IQuestEventResponsePlugIn"/> which is forwarding everything to the game client with specific data packets.
+/// </summary>
+[PlugIn]
+[Display(Name = nameof(PlugInResources.QuestEventResponsePlugIn_Name), Description = nameof(PlugInResources.QuestEventResponsePlugIn_Description), ResourceType = typeof(PlugInResources))]
+[Guid("5EAE1634-9589-4DEB-AEBA-93D0AC8AC5DF")]
+public class QuestEventResponsePlugIn : IQuestEventResponsePlugIn
+{
+    private readonly RemotePlayer _player;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="QuestEventResponsePlugIn"/> class.
+    /// </summary>
+    /// <param name="player">The player.</param>
+    public QuestEventResponsePlugIn(RemotePlayer player)
+    {
+        this._player = player;
+    }
+
+    /// <inheritdoc/>
+    public async ValueTask ShowActiveEventQuestsAsync()
+    {
+        var connection = this._player.Connection;
+        if (connection is null)
+        {
+            return;
+        }
+
+        // Hints: * This is only sent for new characters (level <= 1, no MG or DL).
+        //        * I also found a struct which contains the following fields (each 2 bytes: NpcNumber (0), Count (1), QuestGroup (1), QuestNumber (0)).
+        //        * Always: C1 0C F6 03 00 00 01 00 00 00 01 00
+        int Write()
+        {
+            var size = QuestEventResponseRef.Length;
+            var span = connection.Output.GetSpan(size)[..size];
+            var packet = new QuestEventResponseRef(span);
+            var vanertGroup = packet[0];
+            vanertGroup.Number = 1;
+
+            var duprianGroup = packet[1];
+            duprianGroup.Number = 1;
+            return size;
+        }
+
+        await connection.SendAsync(Write).ConfigureAwait(false);
+    }
+}