class ScoopEnv:
RIGHT = 0
LEFT = 1
CLOSE = 2
OPEN = 3
def __init__(self, port=19997, memory_size=60):
rospy.init_node('env', anonymous=True)
self.sim_client = utils.connectToSimulation('127.0.0.1', port)
# Create UR5 and restart simulator
self.rdd = RDD(self.sim_client)
self.ur5 = UR5(self.sim_client, self.rdd)
self.nA = 4
self.cube = None
self.cube_start_position = [-0.2, 0.85, 0.025]
self.cube_size = [0.1, 0.2, 0.04]
self.open_position = 0.3
self.narrow_position = None
self.wide_position = None
# self.rdd_position = [0 for _ in range(2 * memory_size)]
# self.rdd_force = [0 for _ in range(2 * memory_size)]
self.narrow_p = []
# self.narrow_t = [0 for _ in range(memory_size)]
self.rdd_sub = rospy.Subscriber('sim/rdd_joints', Float32MultiArray, self.rddJointsCallback, queue_size=1)
self.tip_position = None
self.tip_orientation = None
self.tip_pos_sub = rospy.Subscriber('sim/ur5_tip_pose', Float32MultiArray, self.tipPosCallback, queue_size=1)
self.target_position = None
self.target_orientation = None
self.target_pos_sub = rospy.Subscriber('sim/ur5_target_pose', Float32MultiArray, self.targetPosCallback, queue_size=1)
self.cube_position = None
self.cube_orientation = None
self.cube_pos_sub = rospy.Subscriber('sim/cube_pose', Float32MultiArray, self.cubePosCallback, queue_size=1)
def rddJointsCallback(self, msg):
"""
callback function for rdd joints state
:param msg: Float32MultiArray
:return:
"""
data = list(msg.data)
if len(self.narrow_p) < 1000:
self.narrow_p.append(data[0])
self.narrow_position = data[0]
self.wide_position = data[1]
def tipPosCallback(self, msg):
"""
callback function for ur5 tip
:param msg: Float32MultiArray
:return:
"""
data = list(msg.data)
self.tip_position = data[:3]
self.tip_orientation = data[3:]
def targetPosCallback(self, msg):
"""
callback function for ur5 target
:param msg: Float32MultiArray
:return:
"""
data = list(msg.data)
self.target_position = data[:3]
self.target_orientation = data[3:]
def cubePosCallback(self, msg):
"""
callback function for cube
:param msg: Float32MultiArray
:return:
"""
data = list(msg.data)
self.cube_position = data[:3]
self.cube_orientation = data[3:]
def getObs(self):
"""
get observation from position and force
:return: the observation, List[List[float], List[float]]
"""
p = copy(self.narrow_p)
if len(p) == 0:
p = [0.]
xs = [i for i in range(len(p))]
resampled = np.interp(np.linspace(0, len(p)-1, 20), xs, p).tolist()
return resampled
def reset(self):
"""
reset the environment
:return: the observation, List[List[float], List[float]]
"""
vrep.simxStopSimulation(self.sim_client, VREP_BLOCKING)
time.sleep(1)
vrep.simxStartSimulation(self.sim_client, VREP_BLOCKING)
time.sleep(1)
sim_ret, self.cube = utils.getObjectHandle(self.sim_client, 'cube')
utils.setObjectPosition(self.sim_client, self.ur5.UR5_target, [-0.2, 0.6, 0.08])
dy = 0.3 * np.random.random()
# dy = 0
# dz = 0.1 * np.random.random() - 0.05
current_pose = self.ur5.getEndEffectorPose()
target_pose = current_pose.copy()
target_pose[1, 3] += dy
# target_pose[2, 3] += dz
self.rdd.setFingerPos(-0.1)
self.ur5.moveTo(target_pose)
self.narrow_p = []
self.target_position = None
while self.target_position is None:
time.sleep(0.1)
return [0. for _ in range(20)]
def step(self, a):
"""
take a step
:param a: action, int
:return: observation, reward, done, info
"""
self.narrow_p = []
if a in [self.RIGHT, self.LEFT]:
current_position = self.target_position
target_pose = transformations.euler_matrix(self.target_orientation[0], self.target_orientation[1], self.target_orientation[2])
target_pose[:3, -1] = current_position
if a == self.RIGHT:
target_pose[1, 3] -= 0.03
elif a == self.LEFT:
target_pose[1, 3] += 0.03
self.ur5.moveTo(target_pose)
# utils.setObjectPositionOneShot(self.sim_client, self.ur5.UR5_target, target_pose[:3, 3])
elif a == self.CLOSE:
self.rdd.setFingerPos(-0.1)
_finger_pos = self.narrow_position
time.sleep(0.1)
t = 0
while abs(_finger_pos - self.narrow_position) > 0.01:
_finger_pos = self.narrow_position
time.sleep(0.1)
t += 1
if t == 10:
break
elif a == self.OPEN:
self.rdd.setFingerPos()
_finger_pos = self.narrow_position
time.sleep(0.1)
t = 0
while abs(_finger_pos - self.narrow_position) > 0.01:
_finger_pos = self.narrow_position
time.sleep(0.1)
t += 1
if t == 10:
break
cube_orientation = self.cube_orientation
cube_position = self.cube_position
tip_position = self.tip_position
narrow_position = self.narrow_position
target_position = self.target_position
# arm is in wrong pose
# sim_ret, target_position = utils.getObjectPosition(self.sim_client, self.ur5.UR5_target)
if target_position[1] < 0.42 or target_position[1] > 0.95 or target_position[2] < 0 or target_position[
2] > 0.2:
print 'Wrong arm position: ', target_position
return None, -1, True, None
# cube in wrong position
while any(np.isnan(cube_position)):
res, cube_position = utils.getObjectPosition(self.sim_client, self.cube)
if cube_position[0] < self.cube_start_position[0] - self.cube_size[0] or \
cube_position[0] > self.cube_start_position[0] + self.cube_size[0] or \
cube_position[1] < self.cube_start_position[1] - self.cube_size[1] or \
cube_position[1] > self.cube_start_position[1] + self.cube_size[1]:
print 'Wrong cube position: ', cube_position
return None, 0, True, None
# cube is lifted
if np.all(tip_position > (np.array(cube_position) - np.array(self.cube_size))) and \
np.all(tip_position < (np.array(cube_position) + np.array(self.cube_size))) and \
cube_orientation[0] < -0.01 and \
narrow_position > -0.5:
return None, 1, True, None
# cube is not lifted
return self.getObs(), 0, False, None
class ScoopEnv:
RIGHT = 0
LEFT = 1
def __init__(self, port=19997, memory_size=60):
self.sim_client = utils.connectToSimulation('127.0.0.1', port)
# Create UR5 and restart simulator
self.rdd = RDD(self.sim_client)
self.ur5 = UR5(self.sim_client, self.rdd)
self.nA = 2
self.cube = None
self.cube_start_position = [-0.2, 0.85, 0.025]
self.cube_size = [0.1, 0.2, 0.04]
self.open_position = 0.3
def sendClearSignal(self):
sim_ret = vrep.simxSetIntegerSignal(self.sim_client, 'clear', 1, utils.VREP_ONESHOT)
def getObs(self):
sim_ret, data = vrep.simxGetStringSignal(self.sim_client, 'theta', vrep.simx_opmode_blocking)
p = vrep.simxUnpackFloats(data)
if len(p) == 0:
p = [0.]
xs = [i for i in range(len(p))]
resampled = np.interp(np.linspace(0, len(p) - 1, 20), xs, p).tolist()
return resampled
def reset(self):
"""
reset the environment
:return: the observation, List[List[float], List[float]]
"""
vrep.simxStopSimulation(self.sim_client, utils.VREP_BLOCKING)
time.sleep(1)
vrep.simxStartSimulation(self.sim_client, utils.VREP_BLOCKING)
time.sleep(1)
sim_ret, self.cube = utils.getObjectHandle(self.sim_client, 'cube')
self.rdd.setFingerPos(-0.1)
utils.setObjectPosition(self.sim_client, self.ur5.UR5_target, [-0.2, 0.6, 0.08])
# utils.setObjectPosition(self.sim_client, self.ur5.UR5_target, [-0.2, 0.6, 0.15])
dy = 0.3 * np.random.random()
# dz = 0.1 * np.random.random() - 0.05
current_pose = self.ur5.getEndEffectorPose()
target_pose = current_pose.copy()
target_pose[1, 3] += dy
# target_pose[2, 3] += dz
self.sendClearSignal()
self.ur5.moveTo(target_pose)
self.rdd.setFingerPos()
return self.getObs()
def step(self, a):
"""
take a step
:param a: action, int
:return: observation, reward, done, info
"""
self.sendClearSignal()
sim_ret, target_position = utils.getObjectPosition(self.sim_client, self.ur5.UR5_target)
sim_ret, target_orientation = utils.getObjectOrientation(self.sim_client, self.ur5.UR5_target)
target_pose = transformations.euler_matrix(target_orientation[0], target_orientation[1], target_orientation[2])
target_pose[:3, -1] = target_position
if a == self.RIGHT:
target_pose[1, 3] -= 0.05
elif a == self.LEFT:
target_pose[1, 3] += 0.05
self.ur5.moveTo(target_pose)
sim_ret, cube_orientation = utils.getObjectOrientation(self.sim_client, self.cube)
sim_ret, cube_position = utils.getObjectPosition(self.sim_client, self.cube)
sim_ret, target_position = utils.getObjectPosition(self.sim_client, self.ur5.UR5_target)
# arm is in wrong pose
# sim_ret, target_position = utils.getObjectPosition(self.sim_client, self.ur5.UR5_target)
if target_position[1] < 0.42 or target_position[1] > 0.95 or target_position[2] < 0 or target_position[
2] > 0.2:
print 'Wrong arm position: ', target_position
return None, -1, True, None
# cube in wrong position
while any(np.isnan(cube_position)):
res, cube_position = utils.getObjectPosition(self.sim_client, self.cube)
if cube_position[0] < self.cube_start_position[0] - self.cube_size[0] or \
cube_position[0] > self.cube_start_position[0] + self.cube_size[0] or \
cube_position[1] < self.cube_start_position[1] - self.cube_size[1] or \
cube_position[1] > self.cube_start_position[1] + self.cube_size[1]:
print 'Wrong cube position: ', cube_position
return None, 0, True, None
# cube is lifted
if cube_orientation[0] < -0.05:
return None, 1, True, None
# cube is not lifted
return self.getObs(), 0, False, None
class ScoopEnv:
RIGHT = 0
LEFT = 1
CLOSE = 2
OPEN = 3
def __init__(self, port=19997):
rospy.init_node('env', anonymous=True)
self.sim_client = utils.connectToSimulation('127.0.0.1', port)
# Create UR5 and restart simulator
self.rdd = RDD(self.sim_client)
self.ur5 = UR5(self.sim_client, self.rdd)
self.nA = 4
self.cube = None
self.cube_start_position = [-0.2, 0.9, 0.05]
self.cube_size = [0.1, 0.2, 0.04]
self.open_position = 0.3
self.narrow_position = None
self.wide_position = None
self.state = [0 for _ in range(4 * 60)]
self.state_sub = rospy.Subscriber('sim/state',
Float32MultiArray,
self.stateCallback,
queue_size=1)
self.tip_position = None
self.tip_orientation = None
self.tip_pos_sub = rospy.Subscriber('sim/ur5_tip_pose',
Float32MultiArray,
self.tipPosCallback,
queue_size=1)
self.target_position = None
self.target_orientation = None
self.target_pos_sub = rospy.Subscriber('sim/ur5_target_pose',
Float32MultiArray,
self.targetPosCallback,
queue_size=1)
self.cube_position = None
self.cube_orientation = None
self.cube_pos_sub = rospy.Subscriber('sim/cube_pose',
Float32MultiArray,
self.cubePosCallback,
queue_size=1)
def stateCallback(self, msg):
data = list(msg.data)
self.state = self.state[4:] + data
self.narrow_position = data[0]
self.wide_position = data[1]
def tipPosCallback(self, msg):
data = list(msg.data)
self.tip_position = data[:3]
self.tip_orientation = data[3:]
def targetPosCallback(self, msg):
data = list(msg.data)
self.target_position = data[:3]
self.target_orientation = data[3:]
def cubePosCallback(self, msg):
data = list(msg.data)
self.cube_position = data[:3]
self.cube_orientation = data[3:]
def reset(self):
vrep.simxStopSimulation(self.sim_client, VREP_BLOCKING)
time.sleep(1)
vrep.simxStartSimulation(self.sim_client, VREP_BLOCKING)
time.sleep(1)
sim_ret, self.cube = utils.getObjectHandle(self.sim_client, 'cube')
utils.setObjectPosition(self.sim_client, self.ur5.UR5_target,
[-0.2, 0.6, 0.08])
dy = 0.3 * np.random.random()
# dy = 0
# dz = 0.1 * np.random.random() - 0.05
current_pose = self.ur5.getEndEffectorPose()
target_pose = current_pose.copy()
target_pose[1, 3] += dy
# target_pose[2, 3] += dz
self.ur5.moveTo(target_pose)
# self.rdd.open(self.open_position)
self.target_position = None
while self.target_position is None:
time.sleep(0.1)
return self.state
def step(self, a):
if a in [self.RIGHT, self.LEFT]:
current_position = self.target_position
target_pose = transformations.euler_matrix(
self.target_orientation[0], self.target_orientation[1],
self.target_orientation[2])
target_pose[:3, -1] = current_position
if a == self.RIGHT:
target_pose[1, 3] -= 0.01
elif a == self.LEFT:
target_pose[1, 3] += 0.01
utils.setObjectPositionOneShot(self.sim_client,
self.ur5.UR5_target, target_pose[:3,
3])
elif a == self.CLOSE:
self.rdd.setFingerPos(0.)
elif a == self.OPEN:
self.rdd.setFingerPos()
# sim_ret, cube_orientation = utils.getObjectOrientation(self.sim_client, self.cube)
# sim_ret, cube_position = utils.getObjectPosition(self.sim_client, self.cube)
# sim_ret, tip_position = utils.getObjectPosition(self.sim_client, self.ur5.gripper_tip)
# sim_ret, narrow_position = utils.getJointPosition(self.sim_client, self.rdd.finger_joint_narrow)
cube_orientation = self.cube_orientation
cube_position = self.cube_position
tip_position = self.tip_position
narrow_position = self.narrow_position
target_position = self.target_position
# arm is in wrong pose
# sim_ret, target_position = utils.getObjectPosition(self.sim_client, self.ur5.UR5_target)
if target_position[1] < 0.42 or target_position[
1] > 0.95 or target_position[2] < 0 or target_position[2] > 0.2:
print 'Wrong arm position: ', target_position
return None, -1, True, None
# cube in wrong position
while any(np.isnan(cube_position)):
res, cube_position = utils.getObjectPosition(
self.sim_client, self.cube)
if cube_position[0] < self.cube_start_position[0] - self.cube_size[0] or \
cube_position[0] > self.cube_start_position[0] + self.cube_size[0] or \
cube_position[1] < self.cube_start_position[1] - self.cube_size[1] or \
cube_position[1] > self.cube_start_position[1] + self.cube_size[1]:
print 'Wrong cube position: ', cube_position
return None, 0, True, None
# cube is lifted
if np.all(tip_position > (np.array(cube_position) - np.array(self.cube_size))) and \
np.all(tip_position < (np.array(cube_position) + np.array(self.cube_size))) and \
(cube_orientation[0] < -0.02 or cube_position[2] > self.cube_start_position[2] + 0.02) and \
narrow_position > -0.5:
return None, 1, True, None
# cube is not lifted
return self.state, 0, False, None
class ScoopEnv:
RIGHT = 0
LEFT = 1
UP = 2
DOWN = 3
def __init__(self, port=19997):
np.random.seed(port)
self.sim_client = utils.connectToSimulation('127.0.0.1', port)
# Create UR5 and restart simulator
self.rdd = RDD(self.sim_client)
self.ur5 = UR5(self.sim_client, self.rdd)
self.sensor = VisionSensor(self.sim_client, 'Vision_sensor', None, None, True, False)
self.nA = 4
self.observation_space = np.zeros(4)
self.cube = None
self.cube_start_position = [-0.2, 0.85, 0.025]
self.cube_size = [0.1, 0.2, 0.04]
self.open_position = 0.3
def getObs(self):
sim_ret, theta = utils.getJointPosition(self.sim_client, self.rdd.finger_joint_narrow)
sim_ret, tip_position = utils.getObjectPosition(self.sim_client, self.ur5.gripper_tip)
return np.concatenate((tip_position, [theta]))
def reset(self):
"""
reset the environment
:return: the observation, List[List[float], List[float]]
"""
vrep.simxStopSimulation(self.sim_client, utils.VREP_BLOCKING)
time.sleep(1)
vrep.simxStartSimulation(self.sim_client, utils.VREP_BLOCKING)
time.sleep(1)
sim_ret, self.cube = utils.getObjectHandle(self.sim_client, 'cube')
# utils.setObjectPosition(self.sim_client, self.ur5.UR5_target, [-0.2, 0.6, 0.08])
utils.setObjectPosition(self.sim_client, self.ur5.UR5_target, [-0.2, 0.6, 0.15])
dy = 0.3 * np.random.random()
dz = 0.1 * np.random.random() - 0.05
current_pose = self.ur5.getEndEffectorPose()
target_pose = current_pose.copy()
target_pose[1, 3] += dy
target_pose[2, 3] += dz
self.rdd.setFingerPos()
self.ur5.moveTo(target_pose)
return self.getObs()
def getReward(self):
sim_ret, narrow_tip = utils.getObjectHandle(self.sim_client, 'narrow_tip')
sim_ret, cube_bottom = utils.getObjectHandle(self.sim_client, 'cube_bottom')
sim_ret, tip_position = utils.getObjectPosition(self.sim_client, narrow_tip)
sim_ret, bottom_position = utils.getObjectPosition(self.sim_client, cube_bottom)
sim_ret, cube_orientation = utils.getObjectOrientation(self.sim_client, self.cube)
return -np.linalg.norm(tip_position-bottom_position) + (-10 * cube_orientation[0])
def step(self, a):
"""
take a step
:param a: action, int
:return: observation, reward, done, info
"""
sim_ret, target_position = utils.getObjectPosition(self.sim_client, self.ur5.UR5_target)
sim_ret, target_orientation = utils.getObjectOrientation(self.sim_client, self.ur5.UR5_target)
target_pose = transformations.euler_matrix(target_orientation[0], target_orientation[1], target_orientation[2])
target_pose[:3, -1] = target_position
if a == self.RIGHT:
target_pose[1, 3] -= 0.05
elif a == self.LEFT:
target_pose[1, 3] += 0.05
elif a == self.UP:
target_pose[2, 3] += 0.03
elif a == self.DOWN:
target_pose[2, 3] -= 0.03
target_position = target_pose[:, 3]
if 0.42 < target_position[1] < 0.95 and 0 < target_position[2] < 0.3:
self.ur5.moveTo(target_pose)
sim_ret, cube_orientation = utils.getObjectOrientation(self.sim_client, self.cube)
sim_ret, cube_position = utils.getObjectPosition(self.sim_client, self.cube)
# cube in wrong position
while any(np.isnan(cube_position)):
res, cube_position = utils.getObjectPosition(self.sim_client, self.cube)
if cube_position[0] < self.cube_start_position[0] - self.cube_size[0] or \
cube_position[0] > self.cube_start_position[0] + self.cube_size[0] or \
cube_position[1] < self.cube_start_position[1] - self.cube_size[1] or \
cube_position[1] > self.cube_start_position[1] + self.cube_size[1]:
# print 'Wrong cube position: ', cube_position
return None, self.getReward(), True, None
# cube is lifted
if cube_orientation[0] < -0.02:
return None, self.getReward(), True, None
# cube is not lifted
return self.getObs(), self.getReward(), False, None
class ScoopEnv:
RIGHT = 0
LEFT = 1
UP = 2
DOWN = 3
def __init__(self, port=19997):
np.random.seed(port)
self.sim_client = utils.connectToSimulation('127.0.0.1', port)
# Create UR5 and restart simulator
self.rdd = RDD(self.sim_client)
self.ur5 = UR5(self.sim_client, self.rdd)
self.sensor = VisionSensor(self.sim_client, 'Vision_sensor_top', None,
None, True, False)
self.nA = 4
self.observation_space = (np.zeros((12, 64, 64)), np.zeros((4, 20)))
self.cube = None
self.cube_start_position = [-0.2, 0.85, 0.025]
self.cube_size = [0.1, 0.2, 0.04]
self.open_position = 0.3
self.img_his = [np.zeros((3, 64, 64)) for _ in range(4)]
self.theta_his = [np.zeros((1, 20)) for _ in range(4)]
def sendClearSignal(self):
sim_ret = vrep.simxSetIntegerSignal(self.sim_client, 'clear', 1,
utils.VREP_ONESHOT)
def getObs(self):
sim_ret, data = vrep.simxGetStringSignal(self.sim_client, 'theta',
vrep.simx_opmode_blocking)
p = vrep.simxUnpackFloats(data)
if len(p) == 0:
p = [0.]
xs = [i for i in range(len(p))]
resampled = np.interp(np.linspace(0, len(p) - 1, 20), xs, p)
img_obs = np.rollaxis(self.sensor.getColorData(), 2, 0)
theta_obs = np.expand_dims(resampled, 0)
self.img_his = self.img_his[1:] + [img_obs]
self.theta_his = self.theta_his[1:] + [theta_obs]
return np.concatenate(self.img_his,
0), np.concatenate(self.theta_his, 0)
def reset(self):
"""
reset the environment
:return: the observation, List[List[float], List[float]]
"""
vrep.simxStopSimulation(self.sim_client, utils.VREP_BLOCKING)
time.sleep(1)
vrep.simxStartSimulation(self.sim_client, utils.VREP_BLOCKING)
time.sleep(1)
sim_ret, self.cube = utils.getObjectHandle(self.sim_client, 'cube')
# utils.setObjectPosition(self.sim_client, self.ur5.UR5_target, [-0.2, 0.6, 0.08])
utils.setObjectPosition(self.sim_client, self.ur5.UR5_target,
[-0.2, 0.6, 0.15])
dy = 0.3 * np.random.random()
dz = 0.1 * np.random.random() - 0.05
current_pose = self.ur5.getEndEffectorPose()
target_pose = current_pose.copy()
target_pose[1, 3] += dy
target_pose[2, 3] += dz
self.rdd.setFingerPos()
self.sendClearSignal()
self.ur5.moveTo(target_pose)
return self.getObs()
def getReward(self):
sim_ret, narrow_tip = utils.getObjectHandle(self.sim_client,
'narrow_tip')
sim_ret, cube_bottom = utils.getObjectHandle(self.sim_client,
'cube_bottom')
sim_ret, tip_position = utils.getObjectPosition(
self.sim_client, narrow_tip)
sim_ret, bottom_position = utils.getObjectPosition(
self.sim_client, cube_bottom)
sim_ret, cube_orientation = utils.getObjectOrientation(
self.sim_client, self.cube)
return -np.linalg.norm(tip_position - bottom_position) + (
-10 * cube_orientation[0])
def step(self, a):
"""
take a step
:param a: action, int
:return: observation, reward, done, info
"""
self.sendClearSignal()
sim_ret, target_position = utils.getObjectPosition(
self.sim_client, self.ur5.UR5_target)
sim_ret, target_orientation = utils.getObjectOrientation(
self.sim_client, self.ur5.UR5_target)
target_pose = transformations.euler_matrix(target_orientation[0],
target_orientation[1],
target_orientation[2])
target_pose[:3, -1] = target_position
if a == self.RIGHT:
target_pose[1, 3] -= 0.05
elif a == self.LEFT:
target_pose[1, 3] += 0.05
elif a == self.UP:
target_pose[2, 3] += 0.03
elif a == self.DOWN:
target_pose[2, 3] -= 0.03
target_position = target_pose[:, 3]
if 0.42 < target_position[1] < 0.95 and 0 < target_position[2] < 0.3:
self.ur5.moveTo(target_pose)
sim_ret, cube_orientation = utils.getObjectOrientation(
self.sim_client, self.cube)
sim_ret, cube_position = utils.getObjectPosition(
self.sim_client, self.cube)
# cube in wrong position
while any(np.isnan(cube_position)):
res, cube_position = utils.getObjectPosition(
self.sim_client, self.cube)
if cube_position[0] < self.cube_start_position[0] - self.cube_size[0] or \
cube_position[0] > self.cube_start_position[0] + self.cube_size[0] or \
cube_position[1] < self.cube_start_position[1] - self.cube_size[1] or \
cube_position[1] > self.cube_start_position[1] + self.cube_size[1]:
# print 'Wrong cube position: ', cube_position
return None, self.getReward(), True, None
# cube is lifted
if cube_orientation[0] < -0.02:
return None, self.getReward(), True, None
# cube is not lifted
return self.getObs(), self.getReward(), False, None
