Refactor: 合并处理消息的类

module/map/fleet.py

@@ -1,10 +1,10 @@
 import itertools
 
 from module.base.timer import Timer
+from module.exception import MapWalkError
 from module.handler.ambush import AmbushHandler
 from module.logger import logger
 from module.map.camera import Camera
-from module.exception import MapWalkError
 from module.map.grids import Grids
 from module.map.map_base import SelectedGrids
 from module.map.map_base import location2node, location_ensure