text: from rllab.envs.mujoco.gather.gather_env import GatherEnv
  from sandbox.finetuning.envs.mujoco.modified.snake_hfield_env import SnakeHfieldEnv
  
  class SnakeHfieldGather(GatherEnv):
      MODEL_CLASS = SnakeHfieldEnv
      ORI_IND = 2
  
  
  if __name__ == "__main__":
      env = SnakeHfieldGather()
      while True:
          env.reset()
          for _ in range(1000):
              env.render()
              _, reward, _, _ = env.step(env.action_space.sample())  # take a random action