generic cab control state indicators, ai master controller logic enhancements, battery charging for diesel powered vehicles workaround, water heater damage fix, ai route scanning fixes, material loading fix

drivermode.cpp

@@ -1133,6 +1133,7 @@ driver_mode::InOutKey()
 
     if( train == nullptr ) {
         FreeFlyModeFlag = true; // nadal poza kabiną
+        Camera.m_owner = nullptr; // detach camera from the vehicle
         return;
     }