build 180122. radio channel cab controls, sky brightness calculation fix, motor ventilator spin rate tweaks

Train.h

@@ -89,7 +89,6 @@ class TTrain
     void UpdateMechPosition(double dt);
     vector3 GetWorldMechPosition();
     bool Update( double const Deltatime );
-    void update_sounds( double const Deltatime );
     void MechStop();
     void SetLights();
     // McZapkie-310302: ladowanie parametrow z pliku
@@ -116,7 +115,8 @@ class TTrain
     TDynamicObject *find_nearest_consist_vehicle() const;
     // moves train brake lever to specified position, potentially emits switch sound if conditions are met
     void set_train_brake( double const Position );
-
+    // update function subroutines
+    void update_sounds( double const Deltatime );
 
     // command handlers
     // NOTE: we're currently using universal handlers and static handler map but it may be beneficial to have these implemented on individual class instance basis
@@ -271,6 +271,9 @@ public: // reszta może by?publiczna
     TGauge ggConverterFuseButton; // hunter-261211: przycisk odblokowania nadmiarowego przetwornic i ogrzewania
     TGauge ggStLinOffButton;
     TGauge ggRadioButton;
+    TGauge ggRadioChannelSelector;
+    TGauge ggRadioChannelPrevious;
+    TGauge ggRadioChannelNext;
     TGauge ggUpperLightButton;
     TGauge ggLeftLightButton;
     TGauge ggRightLightButton;