ascnet/AscNet.GameServer/Handlers/PlayerModule.cs

using AscNet.Common.MsgPack;
using MessagePack;

namespace AscNet.GameServer.Handlers
{
    [MessagePackObject(true)]
    public class ChangePlayerMarkRequest
    {
        public long MaskId;
    }

    internal class PlayerModule
    {
        [RequestPacketHandler("ChangePlayerMarkRequest")]
        public static void ChangePlayerMarkRequestHandler(Session session, Packet.Request packet)
        {
            ChangePlayerMarkRequest request = MessagePackSerializer.Deserialize<ChangePlayerMarkRequest>(packet.Content);

            if (session.player.PlayerData.Marks is null)
            {
                session.log.Debug("Marks is somehow null");
                session.player.PlayerData.Marks = new();
            }

            session.player.PlayerData.Marks.Add(request.MaskId);
            session.SendResponse(new ChangePlayerMarkResponse(), packet.Id);
        }
    }
}