Fixed args PolylineWalker to match the super StepWalker class (#1621)

* * Removed pokemongo_bot/polyline_stepper.py - old Stepper() class
* Fixed args PolylineWalker to match the super StepWalker class
* Added a check to Polynine() point tinitalization, if no route was
  found then, we will return no points between orig, dest thus will
  walk in straight line - expected behaviour will teleport in small
  steps

* * fix typo

pokemongo_bot/walkers/polyline_generator.py

@@ -15,8 +15,12 @@ def __init__(self, origin, destination, speed):
         self.URL = '{}&origin={}&destination={}'.format(self.DISTANCE_API_URL,
                                                    '{},{}'.format(*self.origin),
                                                    '{},{}'.format(*self.destination))
-        self.polyline_points = [x['polyline']['points'] for x in
-                                requests.get(self.URL).json()['routes'][0]['legs'][0]['steps']]
+        self.request_responce = requests.get(self.URL).json()
+        try:
+            self.polyline_points = [x['polyline']['points'] for x in
+                                    self.request_responce['routes'][0]['legs'][0]['steps']]
+        except IndexError:
+            self.polyline_points = self.request_responce['routes']
         self.speed = float(speed)
         self.points = [self.origin] + self.get_points(self.polyline_points) + [self.destination]
         self.lat, self.long = self.points[0][0], self.points[0][1]

pokemongo_bot/walkers/polyline_walker.py

@@ -1,16 +1,14 @@
 # -*- coding: utf-8 -*-
 from polyline_generator import Polyline
-from math import ceil
 from pokemongo_bot.human_behaviour import sleep
-from pokemongo_bot.cell_workers.utils import i2f
 from pokemongo_bot.step_walker import StepWalker
 from pokemongo_bot import logger
 
 class PolylineWalker(StepWalker):
 
-    def __init__(self, bot, speed, initLat, initLng, destLat, destLng):
-        super(PolylineWalker, self).__init__(bot, speed, initLat, initLng, destLat, destLng)
-        self.polyline_walker = Polyline((i2f(self.api._position_lat), i2f(self.api._position_lng)),
+    def __init__(self, bot, speed, destLat, destLng):
+        super(PolylineWalker, self).__init__(bot, speed, destLat, destLng)
+        self.polyline_walker = Polyline((self.api._position_lat, self.api._position_lng),
                                         (self.destLat, self.destLng), self.speed)
         logger.log('[#] {}'.format(self.polyline_walker.URL))