def __init__(self, brick='NXT'):
r'''Creates a new Alpha Rex controller.
brick
Either an nxt.brick.Brick object, or an NXT brick's name as a
string. If omitted, a Brick named 'NXT' is looked up.
'''
if isinstance(brick, basestring):
brick = find_one_brick(name=brick)
self.brick = brick
self.leftMotor = Motor(brick, PORT_B)
self.rightMotor = Motor(brick, PORT_C)
self.motors = [self.leftMotor, self.rightMotor]
self.touch = Touch(brick, PORT_3)
#self.sound = Sound(brick, PORT_2)
#self.light = Light(brick, PORT_3)
self.ultrasonic = Ultrasonic(brick, PORT_4)
class Robot(object):
r'''A high-level controller for the Alpha Rex model.
This class implements methods for the most obvious actions performable
by Alpha Rex, such as walk, wave its arms, and retrieve sensor samples.
Additionally, it also allows direct access to the robot's components
through public attributes.
'''
def __init__(self, brick='NXT'):
r'''Creates a new Alpha Rex controller.
brick
Either an nxt.brick.Brick object, or an NXT brick's name as a
string. If omitted, a Brick named 'NXT' is looked up.
'''
if isinstance(brick, basestring):
brick = find_one_brick(name=brick)
self.brick = brick
self.leftMotor = Motor(brick, PORT_B)
self.rightMotor = Motor(brick, PORT_C)
self.motors = [self.leftMotor, self.rightMotor]
self.touch = Touch(brick, PORT_3)
#self.sound = Sound(brick, PORT_2)
#self.light = Light(brick, PORT_3)
self.ultrasonic = Ultrasonic(brick, PORT_4)
def WarningNoise(self):
self.brick.play_tone_and_wait(FREQ_E, 100)
self.brick.play_tone_and_wait(FREQ_D, 100)
self.brick.play_tone_and_wait(FREQ_C, 100)
def OkNoise(self):
self.brick.play_tone_and_wait(FREQ_C, 100)
self.brick.play_tone_and_wait(FREQ_D, 100)
self.brick.play_tone_and_wait(FREQ_E, 100)
def StartWalk(self, power):
for motor in self.motors:
motor.run(power=power)
def StopWalk(self):
for motor in self.motors:
motor.idle()
def walk(self, secs, power=FORTH):
self.StartWalk(power)
sleep(secs)
self.StopWalk()
def IsButtonPressed(self):
r'''Reads the Touch sensor's output.
'''
return self.touch.get_sample()
def turn(self, direction, degrees):
if (direction == RobotMode.Left):
self.leftMotor.turn(-100, degrees)
self.rightMotor.turn(100, degrees)
else:
self.rightMotor.turn(-100, degrees)
self.leftMotor.turn(100, degrees)
def getDistanceFromObstacle(self):
return self.ultrasonic.get_sample()