Change feature default values to something that will be identified as "not...

Change feature default values to something that will be identified as "not set". When a flight is created, features with missing values (not set) are not included. Note that all these are persistent, which may create a problem if something changes (different vehicle with large weight difference for instance). As the subsequent use of these are persistent, a question may not be asked because it's already set (the brief only asks for missing or problem values).

src/Airmap/AirMapFlightPlanManager.cc

@@ -431,7 +431,10 @@ AirMapFlightPlanManager::_updateRulesAndFeatures(std::vector<RuleSet::Id>& rules
                             if(feature && feature->value().isValid()) {
                                 switch(feature->type()) {
                                 case AirspaceRuleFeature::Boolean:
-                                    features[feature->name().toStdString()] = RuleSet::Feature::Value(feature->value().toBool());
+                                    //-- Skip not set responses (feature->value is initialized to "2")
+                                    if(feature->value().toInt() == 0 || feature->value().toInt() == 1) {
+                                        features[feature->name().toStdString()] = RuleSet::Feature::Value(feature->value().toBool());
+                                    }
                                     break;
                                 case AirspaceRuleFeature::Float:
                                     //-- Sanity check for floats

src/Airmap/AirMapRulesetsManager.cc

@@ -31,12 +31,10 @@ AirMapRuleFeature::AirMapRuleFeature(airmap::RuleSet::Feature feature, QObject*
     settings.beginGroup(kAirMapFeatureGroup);
     switch(_feature.type) {
     case RuleSet::Feature::Type::boolean:
-        _value = settings.value(name(), false);
+        _value = settings.value(name(), 2);
         break;;
     case RuleSet::Feature::Type::floating_point:
-        //_value = settings.value(name(), 0.0f);
-        //-- Default to 1 for now
-        _value = settings.value(name(), 1.0f);
+        _value = settings.value(name(), NAN);
         break;;
     case RuleSet::Feature::Type::string:
         _value = settings.value(name(), QString());

src/Airmap/FlightFeature.qml

@@ -56,7 +56,7 @@ Rectangle {
             QGCCheckBox {
                 id:             checkBox
                 text:           ""
-                checked:        feature.value ? feature.value : false
+                checked:        feature.value && feature.value < 2 ? feature.value : false
                 onClicked:      feature.value = checked
                 anchors.left:   parent.left
                 anchors.verticalCenter: parent.verticalCenter