Zeus - Habbo Emulator

[Table(Name = "users")]
    public class User
    {
        [PrimaryKey, Identity]
        public int ID { get; set; }

        [Column(Name = "username"), NotNull]
        public string Username { get; set; }

        [Column(Name = "auth_ticket"), NotNull]
        public string AuthTicket { get; set; }

        [Column(Name = "motto")]
        public string Motto { get; set; }

        [Column(Name = "rank"), NotNull]
        public int Rank { get; set; }

        [Column(Name = "look"), NotNull]
        public string Look { get; set; }

        [Column(Name = "gender"), NotNull]
        public string Gender { get; set; }

        [Column(Name = "home_room"), NotNull]
        public int HomeRoom { get; set; }

        [Column(Name = "credits"), NotNull]
        public int Credits { get; set; }

        [Column(Name = "activity_points"), NotNull]
        public int Duckets { get; set; }

        [Column(Name = "vip_points"), NotNull]
        public int Diamonds { get; set; }

        [Column(Name = "gotw_points"), NotNull]
        public int GOTWPoints { get; set; }

class MessageEncoder : MessageToMessageEncoder<Composer>    
    {
        private static readonly ILog log = LogManager.GetLogger(typeof(MessageEncoder));

        protected override void Encode(IChannelHandlerContext context, Composer packet, List<object> output)
        {
            ComposerMessage composer = new ComposerMessage(packet.GetHeader());
            packet.Compose(composer);

            if (!composer.HasLength())
            {
                composer.Buffer.SetInt(0, composer.Buffer.WriterIndex - 4);
            }

            log.Debug($"Composer [{packet.GetHeader()}] wurde abgeschickt");

            output.Add(composer.Buffer);
        }
    }