using System.Runtime.InteropServices;

namespace FastArena
{
    internal enum PacketType : ushort
    {
        Invalid = 0, // not packet
        
        ConnectionRequestTCP,
        ConnectionRequestUDP,
        ConnectionResponseTCP,
        ConnectionResponseUDP,
        
        TransformUpdate,
        CreateObject
    }

    [StructLayout(LayoutKind.Sequential, Pack = 4)]
    internal readonly struct PacketHeader
    {
        internal const ushort MAGIC_CONST = 0x6313;
        
        internal readonly ushort magic;
        internal readonly PacketType type;

        internal PacketHeader(PacketType t)
        {
            magic = MAGIC_CONST;
            type = t;
        }
    }
}