build 190902. vehicle derailment, oil pressure change tweak, inverter sound tweak, car braking logic tweak, flashing alerter ui indicator, departure signal sources reduction, additional train state data exposed to uart interface, additional train state data for python scripts, wind simulation tweak, coupler animation fix

Train.h

@@ -69,8 +69,10 @@ public:
         find( TSubModel const *Control ) const;
 };
 
-class TTrain
-{
+class TTrain {
+
+    friend class drivingaid_panel;
+
   public:
 // types
     struct state_t {
@@ -88,6 +90,7 @@ class TTrain
         std::uint8_t ventilator_overload;
         std::uint8_t motor_overload_threshold;
         std::uint8_t train_heating;
+        std::uint8_t cab;
         std::uint8_t recorder_braking;
         std::uint8_t recorder_power;
         std::uint8_t alerter_sound;
@@ -98,6 +101,7 @@ class TTrain
         float brake_pressure;
         float hv_voltage;
         std::array<float, 3> hv_current;
+        float lv_voltage;
     };
 
 // methods
@@ -626,7 +630,7 @@ public: // reszta może by?publiczna
 */
     // McZapkie: opis kabiny - obszar poruszania sie mechanika oraz zajetosc
     std::array<TCab, maxcab + 1> Cabine; // przedzial maszynowy, kabina 1 (A), kabina 2 (B)
-    int iCabn { 0 };
+    int iCabn { 0 }; // 0: mid, 1: front, 2: rear
     // McZapkie: do poruszania sie po kabinie
     Math3D::vector3 pMechSittingPosition; // ABu 180404
     Math3D::vector3 MirrorPosition( bool lewe );