From d61814f8e93c818e4afe13ae4c7291f36774bab1 Mon Sep 17 00:00:00 2001
From: Lars Toenning <dev@ltoenning.de>
Date: Mon, 29 Apr 2019 23:53:37 +0200
Subject: [PATCH] FG: Add version number check

---
 .../simulator/flightgear/fgswiftbusserviceproxy.cpp        | 5 +++++
 src/plugins/simulator/flightgear/fgswiftbusserviceproxy.h  | 3 +++
 src/plugins/simulator/flightgear/simulatorflightgear.cpp   | 7 +++++++
 3 files changed, 15 insertions(+)

diff --git a/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.cpp b/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.cpp
index 51bead363..3654b4d47 100644
--- a/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.cpp
+++ b/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.cpp
@@ -38,6 +38,11 @@ namespace BlackSimPlugin
             }
         }
 
+        QString CFGSwiftBusServiceProxy::getVersionNumber()
+        {
+            return m_dbusInterface->callDBusRet<QString>(QLatin1String("getVersionNumber"));
+        }
+
         void CFGSwiftBusServiceProxy::getOwnAircraftSituationData(FlightgearData *o_flightgearData)
         {
             QPointer<CFGSwiftBusServiceProxy> myself(this);
diff --git a/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.h b/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.h
index 216b1f124..a787d22b4 100644
--- a/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.h
+++ b/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.h
@@ -97,6 +97,9 @@ namespace BlackSimPlugin
             void airportsInRangeUpdated(const QStringList &icaoCodes, const QStringList &names, const QList<double> &lats, const QList<double> &lons, const QList<double> &alts);
 
         public slots:
+            //! Get Flightgear version number
+            QString getVersionNumber();
+
             //! Get own aircraft situation data
             void getOwnAircraftSituationData(FlightgearData *o_flightgearData);
 
diff --git a/src/plugins/simulator/flightgear/simulatorflightgear.cpp b/src/plugins/simulator/flightgear/simulatorflightgear.cpp
index 5954a6332..911bb63ac 100644
--- a/src/plugins/simulator/flightgear/simulatorflightgear.cpp
+++ b/src/plugins/simulator/flightgear/simulatorflightgear.cpp
@@ -955,6 +955,13 @@ namespace BlackSimPlugin
             bool result = service.isValid() && traffic.isValid();
             if (! result) { return; }
 
+            QString flightgearVersion = service.getVersionNumber();
+            QString flightgearVersionMinimum = "2019.2.0";
+
+            if(flightgearVersion < flightgearVersionMinimum){
+                CLogMessage(this).error(u"You are using Flightgear %1. This version of swift is only compatible with Flightgear %2 or newer. Consider upgrading!") << flightgearVersion << flightgearVersionMinimum;
+                return;
+            }
             if (!traffic.initialize())
             {
                 CLogMessage(this).error(u"Connection to FGSwiftBus successful, but could not initialize FGSwiftBus.");