Project import generated by Copybara.

PiperOrigin-RevId: 262097325

CHANGELOG

@@ -5,6 +5,9 @@ should not change, as modifications made to the environment are either
 new features or backward compatible bug fixes. We will maintain vX branches
 pointing at the most recent vX.Y.
 
+v1.3
+- Fix to pixel representation (https://github.com/google-research/football/issues/54,56,57).
+
 v1.2
 - Reduction of memory usage by the environment (https://github.com/google-research/football/issues/47).
 - Reduction of memory usage during compilation (https://github.com/google-research/football/issues/49).

gfootball/__init__.py

@@ -38,3 +38,12 @@
           'representation': 'pixels'
       },
   )
+
+  register(
+      id='GFootball-{env_name}-simple115-v0'.format(env_name=env_name),
+      entry_point='gfootball.env:create_environment',
+      kwargs={
+          'env_name': env_name,
+          'representation': 'simple115'
+      },
+  )

gfootball/env/wrappers.py

@@ -123,7 +123,6 @@ def __init__(self, env, grayscale=True,
     gym.ObservationWrapper.__init__(self, env)
     self._grayscale = grayscale
     self._channel_dimensions = channel_dimensions
-    self._i=0
     self.observation_space = gym.spaces.Box(
         low=0, high=255,
         shape=(self.env.unwrapped._config.number_of_players_agent_controls(),
@@ -132,16 +131,18 @@ def __init__(self, env, grayscale=True,
         dtype=np.uint8)
 
   def observation(self, obs):
-    frame = obs['frame']
-    if self._grayscale:
-      frame = cv2.cvtColor(frame, cv2.COLOR_RGB2GRAY)
-    frame = cv2.resize(frame, (self._channel_dimensions[0],
-                               self._channel_dimensions[1]),
-                       interpolation=cv2.INTER_AREA)
-    if self._grayscale:
-      frame = np.expand_dims(frame, -1)
-    return ([frame] *
-            self.env.unwrapped._config.number_of_players_agent_controls())
+    o = []
+    for observation in obs:
+      frame = observation['frame']
+      if self._grayscale:
+        frame = cv2.cvtColor(frame, cv2.COLOR_RGB2GRAY)
+      frame = cv2.resize(frame, (self._channel_dimensions[0],
+                                 self._channel_dimensions[1]),
+                         interpolation=cv2.INTER_AREA)
+      if self._grayscale:
+        frame = np.expand_dims(frame, -1)
+      o.append(frame)
+    return np.array(o, dtype=np.uint8)
 
 
 class SMMWrapper(gym.ObservationWrapper):

setup.py

@@ -41,7 +41,7 @@ def run(self):
 
 setup(
     name='gfootball',
-    version='1.2',
+    version='1.3',
     description=('Google Research Football - RL environment based on '
                  'open-source game Gameplay Football'),
     author='Google LLC',