Add SystemMessage

src/protocol/Edelstein.Protocol.Gameplay.Game/Contracts/Packets/Send/Message.cs

@@ -0,0 +1,16 @@
+using BinarySerialization;
+using Edelstein.Protocol.Gameplay.Game.Objects.Users.Messages;
+using Edelstein.Protocol.Network.Packets;
+
+namespace Edelstein.Protocol.Gameplay.Game.Contracts.Packets.Send;
+
+public record Message() : StructuredSendPacket((short)PacketSendOperation.Message)
+{
+    [FieldOrder(0)]
+    public required MessageType Type { get; init; }
+
+    [FieldOrder(1)]
+    [Subtype(nameof(Type), MessageType.SystemMessage, typeof(StructuredMessageInfoSystemMessage))]
+    [SubtypeDefault(typeof(StructuredMessageInfo))]
+    public required StructuredMessageInfo Info { get; init; }
+}

src/protocol/Edelstein.Protocol.Gameplay.Game/Objects/Users/IFieldUserExtensions.cs

@@ -0,0 +1,19 @@
+using System.Threading.Tasks;
+using Edelstein.Protocol.Gameplay.Game.Contracts.Packets.Send;
+using Edelstein.Protocol.Gameplay.Game.Objects.Users.Messages;
+using Edelstein.Protocol.Network.Packets.Types;
+
+namespace Edelstein.Protocol.Gameplay.Game.Objects.Users;
+
+public static class IFieldUserExtensions
+{
+    public static Task Message(this IFieldUser user, string chat)
+        => user.Dispatch(new Message
+        {
+            Type = MessageType.SystemMessage,
+            Info = new StructuredMessageInfoSystemMessage
+            {
+                Chat = new LPString(chat)
+            }
+        });
+}

src/protocol/Edelstein.Protocol.Gameplay.Game/Objects/Users/Messages/MessageType.cs

@@ -0,0 +1,20 @@
+namespace Edelstein.Protocol.Gameplay.Game.Objects.Users.Messages;
+
+public enum MessageType : byte
+{
+    DropPickUpMessage = 0x0,
+    QuestRecordMessage = 0x1,
+    CashItemExpireMessage = 0x2,
+    IncEXPMessage = 0x3,
+    IncSPMessage = 0x4,
+    IncPOPMessage = 0x5,
+    IncMoneyMessage = 0x6,
+    IncGPMessage = 0x7,
+    GiveBuffMessage = 0x8,
+    GeneralItemExpireMessage = 0x9,
+    SystemMessage = 0xA,
+    QuestRecordExMessage = 0xB,
+    ItemProtectExpireMessage = 0xC,
+    ItemExpireReplaceMessage = 0xD,
+    SkillExpireMessage = 0xE
+}

src/protocol/Edelstein.Protocol.Gameplay.Game/Objects/Users/Messages/StructuredMessageInfo.cs

@@ -0,0 +1,5 @@
+using Edelstein.Protocol.Network.Packets;
+
+namespace Edelstein.Protocol.Gameplay.Game.Objects.Users.Messages;
+
+public record StructuredMessageInfo : StructuredBasePacket;

src/protocol/Edelstein.Protocol.Gameplay.Game/Objects/Users/Messages/StructuredMessageInfoSystemMessage.cs

@@ -0,0 +1,10 @@
+using BinarySerialization;
+using Edelstein.Protocol.Network.Packets.Types;
+
+namespace Edelstein.Protocol.Gameplay.Game.Objects.Users.Messages;
+
+public record StructuredMessageInfoSystemMessage : StructuredMessageInfo
+{
+    [FieldOrder(0)]
+    public required LPString Chat { get; init; }
+}