Game Programming Using Qt Beginner's Guide

Time for action – the player data JSON serializer

Our next exercise is to create a serializer of the same PlayerInfo structure as we used for the XML exercise, but this time the destination data format is going to be JSON.

Start by creating a PlayerInfoJSON class and give it an interface similar to the one shown in the following code:

class PlayerInfoJSON {
public:
  PlayerInfoJSON(){}
  QByteArray writePlayerInfo(const PlayerInfo &pinfo) const;
};

All that is really required is to implement the writePlayerInfo method. This method will use QJsonDocument::fromVariant() to perform the serialization; thus, what we really have to do is convert our player data to a variant. Let's add a protected method to do that:

QVariant PlayerInfoJSON::toVariant(const PlayerInfo ...