bullet3/examples/pybullet/gym/pybullet_envs/env_bases.py
Erwin Coumans 21f9d1b816 refactor pybullet/gym to allow instantiating environments directly from a pybullet install:
work-in-progress (need to add missing data files, fix paths etc)

example:

pip install pybullet
pip install gym

python
import gym
import pybullet
import pybullet_envs
env = gym.make("HumanoidBulletEnv-v0")
2017-08-22 00:42:02 -07:00

66 lines
1.4 KiB
Python

import gym, gym.spaces, gym.utils, gym.utils.seeding
import numpy as np
import pybullet as p
class MujocoXmlBaseBulletEnv(gym.Env):
"""
Base class for MuJoCo .xml environments in a Scene.
These environments create single-player scenes and behave like normal Gym environments, if
you don't use multiplayer.
"""
metadata = {
'render.modes': ['human', 'rgb_array'],
'video.frames_per_second': 60
}
def __init__(self, robot):
self.scene = None
self.camera = Camera()
self.robot = robot
self._seed()
self.action_space = robot.action_space
self.observation_space = robot.observation_space
def _seed(self, seed=None):
self.np_random, seed = gym.utils.seeding.np_random(seed)
self.robot.np_random = self.np_random # use the same np_randomizer for robot as for env
return [seed]
def _reset(self):
if self.scene is None:
self.scene = self.create_single_player_scene()
if not self.scene.multiplayer:
self.scene.episode_restart()
self.robot.scene = self.scene
self.frame = 0
self.done = 0
self.reward = 0
dump = 0
s = self.robot.reset()
self.potential = self.robot.calc_potential()
return s
def _render(self, mode, close):
pass
def HUD(self, state, a, done):
pass
class Camera:
def __init__(self):
pass
def move_and_look_at(self,i,j,k,x,y,z):
lookat = [x,y,z]
distance = 10
yaw = 10
p.resetDebugVisualizerCamera(distance, yaw, -20, lookat)