feat: implement ChannelSelectionResponse packet data

Wonderking/Packets/OperationCode.cs

@@ -4,5 +4,6 @@ public enum OperationCode : ushort
 {
     LoginInfo = 11,
     LoginResponse = 12,
-    ChannelSelection
+    ChannelSelection = 13,
+    ChannelSelectionResponse = 13
 }

Wonderking/Packets/Outgoing/BaseStats.cs

@@ -0,0 +1,14 @@
+using System.Runtime.InteropServices;
+
+namespace Wonderking.Packets.Outgoing;
+
+[StructLayout(LayoutKind.Auto)]
+public struct BaseStats
+{
+    public required short Strength { get; set; }
+    public required short Dexterity { get; set; }
+    public required short Intelligence { get; set; }
+    public required short Vitality { get; set; }
+    public required short Luck { get; set; }
+    public required short Wisdom { get; set; }
+}

Wonderking/Packets/Outgoing/ChannelSelectionResponsePacket.cs

@@ -0,0 +1,71 @@
+using System.Buffers.Binary;
+using System.Text;
+
+namespace Wonderking.Packets.Outgoing;
+
+[PacketId(OperationCode.ChannelSelectionResponse)]
+public class ChannelSelectionResponsePacket : IPacket
+{
+    public required byte UnknownFlag { get; set; }
+    public required string Endpoint { get; set; }
+    public required ushort Port { get; set; }
+    public required CharacterData[] Characters { get; set; }
+
+    public void Deserialize(byte[] data)
+    {
+        throw new NotSupportedException();
+    }
+
+    public byte[] Serialize()
+    {
+        Span<byte> data = stackalloc byte[1 + 16 + 2 + 2 + 132 * this.Characters.Length];
+        data.Clear();
+        data[0] = this.UnknownFlag;
+        Encoding.ASCII.GetBytes(this.Endpoint, data.Slice(1, 16));
+        BinaryPrimitives.WriteUInt16LittleEndian(data.Slice(17, 2), this.Port);
+        BinaryPrimitives.WriteUInt16LittleEndian(data.Slice(19, 2), (ushort)this.Characters.Length);
+
+        // Character Data
+        for (var i = 0; i < Characters.Length; i++)
+        {
+            var character = Characters[i];
+            BinaryPrimitives.WriteInt32LittleEndian(data.Slice(21, 4), i);
+            Encoding.ASCII.GetBytes(character.Name, data.Slice(25 + (i * 132), 16));
+
+            // Job Data
+            data[41 + (i * 132)] = character.Job.FirstJob;
+            data[42 + (i * 132)] = character.Job.SecondJob;
+            data[43 + (i * 132)] = character.Job.ThirdJob;
+            data[44 + (i * 132)] = character.Job.FourthJob;
+
+            data[45 + (i * 132)] = character.Gender;
+            data[46 + (i * 132)] = character.Level;
+            data[47 + (i * 132)] = character.Unknown;
+            data[48 + (i * 132)] = (byte)character.Experience;
+
+            // Stats
+            BinaryPrimitives.WriteInt16LittleEndian(data.Slice(49 + (i * 132), 2), character.Stats.Strength);
+            BinaryPrimitives.WriteInt16LittleEndian(data.Slice(51 + (i * 132), 2), character.Stats.Dexterity);
+            BinaryPrimitives.WriteInt16LittleEndian(data.Slice(53 + (i * 132), 2), character.Stats.Intelligence);
+            BinaryPrimitives.WriteInt16LittleEndian(data.Slice(55 + (i * 132), 2), character.Stats.Vitality);
+            BinaryPrimitives.WriteInt16LittleEndian(data.Slice(57 + (i * 132), 2), character.Stats.Luck);
+            BinaryPrimitives.WriteInt16LittleEndian(data.Slice(59 + (i * 132), 2), character.Stats.Wisdom);
+
+            BinaryPrimitives.WriteInt32LittleEndian(data.Slice(61 + (i * 132), 4), character.Health);
+            BinaryPrimitives.WriteInt32LittleEndian(data.Slice(65 + (i * 132), 4), character.Mana);
+
+            for (var j = 0; j < 20; j++)
+            {
+                // Equipped Items
+                BinaryPrimitives.WriteUInt16LittleEndian(data.Slice(69 + (i * 132) + (j * 2), 2),
+                    character.EquippedItems[j] ?? 0);
+
+                // Equipped Cash Items
+                BinaryPrimitives.WriteUInt16LittleEndian(data.Slice(109 + (i * 132) + (j * 2), 2),
+                    character.EquippedCashItems[j] ?? 0);
+            }
+        }
+
+        return data.ToArray();
+    }
+}

Wonderking/Packets/Outgoing/CharacterData.cs

@@ -0,0 +1,16 @@
+namespace Wonderking.Packets.Outgoing;
+
+public struct CharacterData
+{
+    public required string Name { get; set; }
+    public required JobData Job { get; set; }
+    public required byte Gender { get; set; }
+    public required byte Level { get; set; }
+    public required byte Unknown { get; set; }
+    public required float Experience { get; set; }
+    public required BaseStats Stats { get; set; }
+    public required int Health { get; set; }
+    public required int Mana { get; set; }
+    public required ushort?[] EquippedItems { get; set; }
+    public required ushort?[] EquippedCashItems { get; set; }
+}

Wonderking/Packets/Outgoing/JobData.cs

@@ -0,0 +1,12 @@
+using System.Runtime.InteropServices;
+
+namespace Wonderking.Packets.Outgoing;
+
+[StructLayout(LayoutKind.Auto)]
+public struct JobData
+{
+    public required byte FirstJob { get; set; }
+    public required byte SecondJob { get; set; }
+    public required byte ThirdJob { get; set; }
+    public required byte FourthJob { get; set; }
+}