pyglet 1.4 compatibility (openai#1771)

* pyglet 1.4 compatibility

* change pyglet version in setup.py

gym/envs/box2d/car_racing.py

@@ -403,7 +403,7 @@ def render(self, mode='human'):
             return self.viewer.isopen
 
         image_data = pyglet.image.get_buffer_manager().get_color_buffer().get_image_data()
-        arr = np.fromstring(image_data.data, dtype=np.uint8, sep='')
+        arr = np.fromstring(image_data.get_data(), dtype=np.uint8, sep='')
         arr = arr.reshape(VP_H, VP_W, 4)
         arr = arr[::-1, :, 0:3]
 

gym/envs/classic_control/rendering.py

@@ -102,7 +102,7 @@ def render(self, return_rgb_array=False):
         if return_rgb_array:
             buffer = pyglet.image.get_buffer_manager().get_color_buffer()
             image_data = buffer.get_image_data()
-            arr = np.frombuffer(image_data.data, dtype=np.uint8)
+            arr = np.frombuffer(image_data.get_data(), dtype=np.uint8)
             # In https://github.com/openai/gym-http-api/issues/2, we
             # discovered that someone using Xmonad on Arch was having
             # a window of size 598 x 398, though a 600 x 400 window
@@ -144,7 +144,7 @@ def get_array(self):
         self.window.flip()
         image_data = pyglet.image.get_buffer_manager().get_color_buffer().get_image_data()
         self.window.flip()
-        arr = np.fromstring(image_data.data, dtype=np.uint8, sep='')
+        arr = np.fromstring(image_data.get_data(), dtype=np.uint8, sep='')
         arr = arr.reshape(self.height, self.width, 4)
         return arr[::-1,:,0:3]
 

setup.py

@@ -28,7 +28,7 @@
                 if package.startswith('gym')],
       zip_safe=False,
       install_requires=[
-          'scipy', 'numpy>=1.10.4', 'six', 'pyglet>=1.2.0,<=1.3.2', 'cloudpickle~=1.2.0',
+          'scipy', 'numpy>=1.10.4', 'six', 'pyglet>=1.4.0,<=1.5.0', 'cloudpickle~=1.2.0',
           'enum34~=1.1.6;python_version<"3.4"',
       ],
       extras_require=extras,