Inject global weather grid to Flight Simulators via FSUIPC

In the short term FSUIPC is used for all MSFS simulators, but in the
mid term this will be superceded by the Simconnect Weather API.

refs #579

src/plugins/simulator/fscommon/fsuipc.h

@@ -13,6 +13,7 @@
 #define BLACKSIMPLUGIN_FSUIPC_H
 
 #include "blackmisc/simulation/simulatedaircraft.h"
+#include "blackmisc/weather/weathergrid.h"
 #include <QStringList>
 
 namespace BlackSimPlugin
@@ -20,8 +21,10 @@ namespace BlackSimPlugin
     namespace FsCommon
     {
         //! Class representing a FSUIPC "interface"
-        class CFsuipc
+        class CFsuipc : public QObject
         {
+            Q_OBJECT
+
         public:
 
             //! Constructor
@@ -45,6 +48,9 @@ namespace BlackSimPlugin
             //! Write variables
             bool write(const BlackMisc::Simulation::CSimulatedAircraft &aircraft);
 
+            //! Write weather grid to simulator
+            bool write(const BlackMisc::Weather::CWeatherGrid &weatherGrid);
+
             //! Read data from FSUIPC
             //! \param aircraft       object to be updated
             //! \param cockpit        update cockpit data
@@ -97,11 +103,30 @@ namespace BlackSimPlugin
             //! Log message category
             static QString getMessageCategory() { return "swift.fscommon.fsuipc"; }
 
+        protected:
+            //! \copydoc QObject::timerEvent
+            void timerEvent(QTimerEvent *event);
+
         private:
+            struct FsuipcWeatherMessage
+            {
+                FsuipcWeatherMessage() = default;
+                FsuipcWeatherMessage(unsigned int offset, const QByteArray &data, int leftTrials);
+                int m_offset = 0;
+                QByteArray m_messageData;
+                int m_leftTrials = 0;
+            };
+
+            void clearAllWeather();
+            void processWeatherMessages();
+
             bool m_connected = false;
             QString m_lastErrorMessage;
             QString m_fsuipcVersion;
 
+            QVector<FsuipcWeatherMessage> m_weatherMessageQueue;
+            unsigned int m_lastTimestamp = 0;
+
             //! Integer representing fractional
             static double intToFractional(double fractional);