baseline: OpenMU upstream b5a0961 (fresh source)

src/GameServer/RemoteView/Quest/LegacyQuestStateDialogPlugIn.cs

@@ -0,0 +1,68 @@
+// <copyright file="LegacyQuestStateDialogPlugIn.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.GameServer.MessageHandler.Quests;
+using MUnique.OpenMU.Network;
+using MUnique.OpenMU.Network.Packets.ServerToClient;
+using MUnique.OpenMU.PlugIns;
+
+/// <summary>
+/// The default implementation of the <see cref="ILegacyQuestStateDialogPlugIn"/> which is forwarding everything to the game client with specific data packets.
+/// </summary>
+[PlugIn]
+[Display(Name = nameof(PlugInResources.LegacyQuestStateDialogPlugIn_Name), Description = nameof(PlugInResources.LegacyQuestStateDialogPlugIn_Description), ResourceType = typeof(PlugInResources))]
+[Guid("F43DA7A9-1ACC-4FBB-9E15-8BE977F4CAF9")]
+public class LegacyQuestStateDialogPlugIn : ILegacyQuestStateDialogPlugIn
+{
+    private readonly RemotePlayer _player;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="LegacyQuestStateDialogPlugIn"/> class.
+    /// </summary>
+    /// <param name="player">The player.</param>
+    public LegacyQuestStateDialogPlugIn(RemotePlayer player)
+    {
+        this._player = player;
+    }
+
+    /// <inheritdoc />
+    public async ValueTask ShowAsync()
+    {
+        if (this._player.Connection is not { } connection || this._player.SelectedCharacter is null)
+        {
+            return;
+        }
+
+        var questState = this._player.SelectedCharacter.QuestStates.FirstOrDefault(s => s.Group == QuestConstants.LegacyQuestGroup);
+        var quest = questState?.ActiveQuest ?? this._player.GetNextLegacyQuest();
+        await connection.SendLegacyQuestStateDialogAsync((byte)(quest?.Number ?? 0), this._player.GetLegacyQuestStateByte()).ConfigureAwait(false);
+
+        if (quest?.RequiredMonsterKills.Any() ?? false)
+        {
+            int Write()
+            {
+                var size = LegacyQuestMonsterKillInfoRef.Length;
+                var span = connection.Output.GetSpan(size)[..size];
+                var packet = new LegacyQuestMonsterKillInfoRef(span);
+                packet.QuestIndex = (byte)quest.Number;
+                int i = 0;
+                foreach (var requirement in quest.RequiredMonsterKills)
+                {
+                    var monsterState = packet[i];
+                    monsterState.MonsterNumber = (uint)requirement.Monster!.Number;
+                    monsterState.KillCount = (uint)(questState?.RequirementStates.FirstOrDefault(r => r.Requirement == requirement)?.KillCount ?? 0);
+                    i++;
+                }
+
+                return size;
+            }
+
+            await connection.SendAsync(Write).ConfigureAwait(false);
+        }
+    }
+}