old_contents: # This code is so you can run the samples without installing the package
  import sys
  import os
  sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))
  
  import pyglet
  from pyglet.window import key
  from pyglet.gl import *
  
  pyglet.resource.path.append(pyglet.resource.get_script_home())
  pyglet.resource.reindex()
  
  import cocos
  from cocos import tiles, actions, layer
  
  class DriveCar(actions.Driver):
      def step(self, dt):
          # handle input and move the car
          self.target.rotation += (keyboard[key.RIGHT] - keyboard[key.LEFT]) * 150 * dt
          self.target.acceleration = (keyboard[key.UP] - keyboard[key.DOWN]) * 400
          if keyboard[key.SPACE]: self.target.speed = 0
          super(DriveCar, self).step(dt)
          scroller.set_focus(self.target.x, self.target.y)
  
  if __name__ == "__main__":
      from cocos.director import director
      director.init(width=600, height=300, do_not_scale=True, resizable=True)
  
      car_layer = layer.ScrollableLayer()
      car = cocos.sprite.Sprite('car.png')
      car_layer.add(car)
      car.position = (200, 100)
      car.max_forward_speed = 200
      car.max_reverse_speed = -100
      car.do(DriveCar())
  
      scroller = layer.ScrollingManager()
      test_layer = tiles.load('road-map.xml')['map0']
      scroller.add(test_layer)
      scroller.add(car_layer)
  
      main_scene = cocos.scene.Scene(scroller)
  
      keyboard = key.KeyStateHandler()
      director.window.push_handlers(keyboard)
  
      def on_key_press(key, modifier):
          if key == pyglet.window.key.Z:
              if scroller.scale == .75:
                  scroller.do(actions.ScaleTo(1, 2))
              else:
                  scroller.do(actions.ScaleTo(.75, 2))
          elif key == pyglet.window.key.D:
              test_layer.set_debug(True)
      director.window.push_handlers(on_key_press)
  
      director.run(main_scene)
  
  
new_contents: # This code is so you can run the samples without installing the package
  import sys
  import os
  sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))
  
  import pyglet
  from pyglet.window import key
  
  pyglet.resource.path.append(pyglet.resource.get_script_home())
  pyglet.resource.reindex()
  
  import cocos
  from cocos import tiles, actions, layer
  
  class DriveCar(actions.Driver):
      def step(self, dt):
          # handle input and move the car
          self.target.rotation += (keyboard[key.RIGHT] - keyboard[key.LEFT]) * 150 * dt
          self.target.acceleration = (keyboard[key.UP] - keyboard[key.DOWN]) * 400
          if keyboard[key.SPACE]: self.target.speed = 0
          super(DriveCar, self).step(dt)
          scroller.set_focus(self.target.x, self.target.y)
  
  if __name__ == "__main__":
      from cocos.director import director
      director.init(width=600, height=300, do_not_scale=True, resizable=True)
  
      car_layer = layer.ScrollableLayer()
      car = cocos.sprite.Sprite('car.png')
      car_layer.add(car)
      car.position = (200, 100)
      car.max_forward_speed = 200
      car.max_reverse_speed = -100
      car.do(DriveCar())
  
      scroller = layer.ScrollingManager()
      test_layer = tiles.load('road-map.xml')['map0']
      scroller.add(test_layer)
      scroller.add(car_layer)
  
      main_scene = cocos.scene.Scene(scroller)
  
      keyboard = key.KeyStateHandler()
      director.window.push_handlers(keyboard)
  
      def on_key_press(key, modifier):
          if key == pyglet.window.key.Z:
              if scroller.scale == .75:
                  scroller.do(actions.ScaleTo(1, 2))
              else:
                  scroller.do(actions.ScaleTo(.75, 2))
          elif key == pyglet.window.key.D:
              test_layer.set_debug(True)
      director.window.push_handlers(on_key_press)
  
      director.run(main_scene)
  
  
subject: remove unnecessary import