caliverse_server/GameServer/Contents/State/PacketHandler/PickPacketHandler.cs

using Google.Protobuf;
using Google.Protobuf.WellKnownTypes;


using ServerCore;
using ServerBase;
using ServerCommon;
using ServerCommon.BusinessLogDomain;
using MetaAssets;



namespace GameServer.PacketHandler;


[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.C2GS_REQ_PING), typeof(PickPacketHandler), typeof(GameLoginListener))]
public class PickPacketHandler : PacketRecvHandler
{ 
     public override async Task<Result> onProcessPacket(ISession entityWithSession, IMessage recvMessage)
    {
        var result = new Result();
        var err_msg = string.Empty;

        var entity_player = entityWithSession as Player;
        NullReferenceCheckHelper.throwIfNull(entity_player, () => $"entity_player is null !!!");

        var server_logic = GameServerApp.getServerLogic();

        var game_msg = recvMessage as ClientToGame;
        if (game_msg == null)
        {
            err_msg = $"Failed to cast ClientToGame !!! : {nameof(ClientToGame.Request.ChangeStateReq)}";
            result.setFail(ServerErrorCode.ClassTypeCastIsNull, err_msg);
            Log.getLogger().error(result.toBasicString());

            send_S2C_ACK_PING(entity_player, result, 0);
            return result;
        }

        var request = game_msg.Request.ReqPing;

        var idx = request.Idx;
        
        send_S2C_ACK_PING(entity_player, result, idx);

        await Task.CompletedTask;
        return result;
    }
 
    public static bool send_S2C_ACK_PING(Player player, Result result, int idx)
    {
        var ack_packet = new ClientToGame();
        ack_packet.Response = new ClientToGameRes();

        ack_packet.Response.ErrorCode = result.ErrorCode;
        ack_packet.Response.AckPing = new();
        ack_packet.Response.AckPing.Idx = idx;

        if (false == GameServerApp.getServerLogic().onSendPacket(player, ack_packet))
        {
            return false;
        }

        return true;
    }
}