add default values to CarlaMap class and remove copy-pasted ones

PythonClient/carla/planner/city_track.py

@@ -13,12 +13,7 @@ from carla.planner.map import CarlaMap
 class CityTrack(object):
 
     def __init__(self, city_name):
-
-        # These values are fixed for every city.
-        self._node_density = 50.0
-        self._pixel_density = 0.1643
-
-        self._map = CarlaMap(city_name, self._pixel_density, self._node_density)
+        self._map = CarlaMap(city_name)
 
         self._astar = AStar()
 

PythonClient/carla/planner/map.py

@@ -31,7 +31,7 @@ def color_to_angle(color):
 
 class CarlaMap(object):
 
-    def __init__(self, city, pixel_density, node_density):
+    def __init__(self, city, pixel_density=0.1643, node_density=50):
         dir_path = os.path.dirname(__file__)
         city_file = os.path.join(dir_path, city + '.txt')
 

PythonClient/manual_control.py

@@ -170,7 +170,7 @@ class CarlaGame(object):
         self._on_new_episode()
 
         if self._city_name is not None:
-            self._map = CarlaMap(self._city_name, 0.1643, 50.0)
+            self._map = CarlaMap(self._city_name)
             self._map_shape = self._map.map_image.shape
             self._map_view = self._map.get_map(WINDOW_HEIGHT)
 

PythonClient/view_start_positions.py

@@ -39,7 +39,7 @@ def view_start_positions(args):
 
         try:
             image = mpimg.imread('carla/planner/%s.png' % scene.map_name)
-            carla_map = CarlaMap(scene.map_name, 0.1653, 50)
+            carla_map = CarlaMap(scene.map_name)
         except IOError as exception:
             logging.error(exception)
             logging.error('Cannot find map "%s"', scene.map_name)