bool locating () const { return _motion_state == WaitingForLocate; }
bool rolling () const { return _motion_state == Rolling; }
bool stopped () const { return _motion_state == Stopped; }
+ bool stopping () const { return _motion_state == DeclickToStop; }
bool waiting_for_butler() const { return _butler_state == WaitingForButler; }
bool declick_in_progress() const { return _motion_state == DeclickToLocate || _motion_state == DeclickToStop; }