[routing][traffic] Different routing options in navigation and decoder mode

Signed-off-by: mvglasow <michael -at- vonglasow.com>

libs/routing/index_router.cpp

@@ -1091,10 +1091,15 @@ RouterResultCode IndexRouter::AdjustRoute(Checkpoints const & checkpoints, m2::P
   return RouterResultCode::NoError;
 }
 
+RoutingOptions IndexRouter::GetRoutingOptions()
+{
+  return RoutingOptions::LoadCarOptionsFromSettings();
+}
+
 unique_ptr<WorldGraph> IndexRouter::MakeWorldGraph()
 {
   // Use saved routing options for all types (car, bicycle, pedestrian).
-  RoutingOptions const routingOptions = RoutingOptions::LoadCarOptionsFromSettings();
+  RoutingOptions const routingOptions = GetRoutingOptions();
   /// @DebugNote
   // Add avoid roads here for debug purpose.
   // routingOptions.Add(RoutingOptions::Road::Motorway);

libs/routing/index_router.hpp

@@ -175,6 +175,14 @@ protected:
    */
   virtual Mode GetMode() { return Mode::Navigation; }
 
+  /**
+   * @brief Returns current routing options.
+   *
+   * In this class, the routing options are the one set in the GUI. Subclasses may override this
+   * method to provide different routing options.
+   */
+  virtual RoutingOptions GetRoutingOptions();
+
 private:
   RouterResultCode CalculateSubrouteJointsMode(IndexGraphStarter & starter, RouterDelegate const & delegate,
                                                std::shared_ptr<AStarProgress> const & progress,