travel action

    struct travel_t: public action_t
    {
      travel_t( player_t* player ): action_t( ACTION_OTHER, "travel", player ) {}
      void execute() override { player -> current.distance = 1; }
      timespan_t execute_time() const override { return timespan_t::from_seconds( player->current.distance / 33.0 ); }
      bool ready() override { return ( player -> current.distance > 1 ); }
      bool usable_moving() const override { return true; }
    };

    action_t* create_action( const std::string& name,
      const std::string& options_str ) override
    {
      if ( name == "travel" ) return new travel_t( this );

      return pet_t::create_action( name, options_str );
    }