gym env backward compatibility due to gym 0.9.6 breaking changes

examples/pybullet/gym/pybullet_envs/baselines/enjoy_kuka_diverse_object_grasping.py

@@ -47,7 +47,7 @@ def main():
         print(obs)
         episode_rew = 0
         while not done:
-            env.render()
+            env.render(mode='human')
             act = policy.sample_action(obs, .1)
             print("Action")
             print(act)

examples/pybullet/gym/pybullet_envs/bullet/cartpole_bullet.py

@@ -17,7 +17,7 @@ import time
 import subprocess
 import pybullet as p
 import pybullet_data
-
+from pkg_resources import parse_version
 
 logger = logging.getLogger(__name__)
 
@@ -100,7 +100,8 @@ class CartPoleBulletEnv(gym.Env):
   def _render(self, mode='human', close=False):
       return
 
-  render = _render
-  reset = _reset
-  seed = _seed
-  step = _step
+  if parse_version(gym.__version__)>=parse_version('0.9.6'):
+    render = _render
+    reset = _reset
+    seed = _seed
+    step = _step

examples/pybullet/gym/pybullet_envs/bullet/kukaCamGymEnv.py

@@ -14,6 +14,8 @@ import pybullet as p
 from . import kuka
 import random
 import pybullet_data
+from pkg_resources import parse_version
+
 maxSteps = 1000
 
 RENDER_HEIGHT = 720
@@ -254,7 +256,8 @@ class KukaCamGymEnv(gym.Env):
     #print(reward)
     return reward
 
-  render = _render
-  reset = _reset
-  seed = _seed
-  step = _step
+  if parse_version(gym.__version__)>=parse_version('0.9.6'):  
+    render = _render
+    reset = _reset
+    seed = _seed
+    step = _step

examples/pybullet/gym/pybullet_envs/bullet/kukaGymEnv.py

@@ -13,6 +13,7 @@ import pybullet as p
 from . import kuka
 import random
 import pybullet_data
+from pkg_resources import parse_version
 
 largeValObservation = 100
 
@@ -185,6 +186,7 @@ class KukaGymEnv(gym.Env):
   def _render(self, mode="rgb_array", close=False):
     if mode != "rgb_array":
       return np.array([])
+    
     base_pos,orn = self._p.getBasePositionAndOrientation(self._kuka.kukaUid)
     view_matrix = self._p.computeViewMatrixFromYawPitchRoll(
         cameraTargetPosition=base_pos,
@@ -199,7 +201,12 @@ class KukaGymEnv(gym.Env):
     (_, _, px, _, _) = self._p.getCameraImage(
         width=RENDER_WIDTH, height=RENDER_HEIGHT, viewMatrix=view_matrix,
         projectionMatrix=proj_matrix, renderer=self._p.ER_BULLET_HARDWARE_OPENGL)
-    rgb_array = np.array(px)
+        #renderer=self._p.ER_TINY_RENDERER)
+
+        
+    rgb_array = np.array(px, dtype=np.uint8)
+    rgb_array = np.reshape(rgb_array, (RENDER_WIDTH, RENDER_HEIGHT, 4))
+		
     rgb_array = rgb_array[:, :, :3]
     return rgb_array
 
@@ -276,7 +283,8 @@ class KukaGymEnv(gym.Env):
     #print(reward)
     return reward
 
-  render = _render
-  reset = _reset
-  seed = _seed
-  step = _step
+  if parse_version(gym.__version__)>=parse_version('0.9.6'):
+    render = _render
+    reset = _reset
+    seed = _seed
+    step = _step

examples/pybullet/gym/pybullet_envs/bullet/kuka_diverse_object_gym_env.py

@@ -10,7 +10,8 @@ import pybullet_data
 import pdb
 import distutils.dir_util
 import glob
-
+from pkg_resources import parse_version
+import gym
 
 class KukaDiverseObjectEnv(KukaGymEnv):
   """Class for Kuka environment with diverse objects.
@@ -324,3 +325,9 @@ class KukaDiverseObjectEnv(KukaGymEnv):
     for object_index in selected_objects:
       selected_objects_filenames += [found_object_directories[object_index]]
     return selected_objects_filenames
+  
+  if parse_version(gym.__version__)>=parse_version('0.9.6'):
+    
+    reset = _reset
+    
+    step = _step

examples/pybullet/gym/pybullet_envs/bullet/minitaur_gym_env.py

@@ -20,6 +20,7 @@ from . import minitaur
 import os
 import pybullet_data
 from . import minitaur_env_randomizer
+from pkg_resources import parse_version
 
 NUM_SUBSTEPS = 5
 NUM_MOTORS = 8
@@ -377,7 +378,8 @@ class MinitaurBulletEnv(gym.Env):
                       self.minitaur.GetObservationUpperBound())
     return observation
 
-  render = _render
-  reset = _reset
-  seed = _seed
-  step = _step
+  if parse_version(gym.__version__)>=parse_version('0.9.6'):
+    render = _render
+    reset = _reset
+    seed = _seed
+    step = _step

examples/pybullet/gym/pybullet_envs/bullet/racecarGymEnv.py

@@ -14,6 +14,7 @@ from . import racecar
 import random
 from . import bullet_client
 import pybullet_data
+from pkg_resources import parse_version
 
 RENDER_HEIGHT = 720
 RENDER_WIDTH = 960
@@ -175,7 +176,8 @@ class RacecarGymEnv(gym.Env):
       #print(reward)
     return reward
 
-  render = _render
-  reset = _reset
-  seed = _seed
-  step = _step
+  if parse_version(gym.__version__)>=parse_version('0.9.6'):
+    render = _render
+    reset = _reset
+    seed = _seed
+    step = _step

examples/pybullet/gym/pybullet_envs/bullet/racecarZEDGymEnv.py

@@ -14,6 +14,7 @@ from . import bullet_client
 from . import racecar
 import random
 import pybullet_data
+from pkg_resources import parse_version
 
 RENDER_HEIGHT = 720
 RENDER_WIDTH = 960
@@ -190,7 +191,8 @@ class RacecarZEDGymEnv(gym.Env):
       #print(reward)
     return reward
 
-  render = _render
-  reset = _reset
-  seed = _seed
-  step = _step
+  if parse_version(gym.__version__)>=parse_version('0.9.6'):
+    render = _render
+    reset = _reset
+    seed = _seed
+    step = _step

examples/pybullet/gym/pybullet_envs/bullet/simpleHumanoidGymEnv.py

@@ -12,7 +12,7 @@ import time
 import pybullet as p
 from . import simpleHumanoid
 import random
-
+from pkg_resources import parse_version
 
 import pybullet_data
 
@@ -110,7 +110,8 @@ class SimpleHumanoidGymEnv(gym.Env):
     print(reward)
     return reward
 
-  render = _render
-  reset = _reset
-  seed = _seed
-  step = _step
+  if parse_version(gym.__version__)>=parse_version('0.9.6'):
+    render = _render
+    reset = _reset
+    seed = _seed
+    step = _step

examples/pybullet/gym/pybullet_envs/env_bases.py

@@ -1,7 +1,7 @@
 import gym, gym.spaces, gym.utils, gym.utils.seeding
 import numpy as np
 import pybullet as p
-
+from pkg_resources import parse_version
 
 class MJCFBaseBulletEnv(gym.Env):
 	"""
@@ -115,10 +115,11 @@ class MJCFBaseBulletEnv(gym.Env):
 	def step(self, *args, **kwargs):
 		return self._step(*args, **kwargs)
 
-	close = _close
-	render = _render
-	reset = _reset
-	seed = _seed
+	if parse_version(gym.__version__)>=parse_version('0.9.6'):
+		close = _close
+		render = _render
+		reset = _reset
+		seed = _seed
 
 
 class Camera:

examples/pybullet/gym/pybullet_envs/examples/minitaur_gym_env_example.py

@@ -1,6 +1,12 @@
 r"""An example to run of the minitaur gym environment with sine gaits.
 """
 
+import os
+import inspect
+currentdir = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
+parentdir = os.path.dirname(os.path.dirname(currentdir))
+os.sys.path.insert(0,parentdir)
+
 import math
 import numpy as np
 from pybullet_envs.bullet import minitaur_gym_env

examples/pybullet/gym/pybullet_envs/examples/testBike.py

@@ -1,3 +1,9 @@
+import os
+import inspect
+currentdir = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
+parentdir = os.path.dirname(os.path.dirname(currentdir))
+os.sys.path.insert(0,parentdir)
+
 import pybullet as p
 import math
 import time