in gym_pusht/envs/pusht.py [0:0]
def get_goal_pose_body(pose):
mass = 1
inertia = pymunk.moment_for_box(mass, (50, 100))
body = pymunk.Body(mass, inertia)
# preserving the legacy assignment order for compatibility
# the order here doesn't matter somehow, maybe because CoM is aligned with body origin
body.position = pose[:2].tolist()
body.angle = pose[2]
return body