def complete(options={}, &block)
      if (mission = create_mission(options, &block)).is_a?(Mission)
        mission.place.is_a?(Integer) ? @missions.insert(mission.place - 1, mission).compact! : @missions << mission
        sort_last_missions
      end
      mission
    end
def complete(options={}, &block)
      if (mission = create_mission(options, &block)).is_a?(Mission)
        mission.place.is_a?(Integer) ? @missions.insert(mission.place - 1, mission).compact! : @missions << mission
        sort_last_missions
      end
      mission
    end
Creates a mission.