def started(chassis):
global start_time
start_time = time.time()
print('> started')
def complete(chassis):
print('> completed in %.1fs' % (time.time() - start_time))
def stalled(chassis):
print('> ** stalled **')
mon = chassis.travel(distance=200, on_start=started, on_complete=complete, on_stalled=stalled)
print('waiting...')
mon.wait(5)
if mon.running:
print('not enough time')
elif mon.stalled:
print('obstacle found')
else:
print('success')
chassis.travel(distance=-200, speed=50, on_start=started, on_complete=complete, on_stalled=stalled).wait(5)
print('back home')
# print('forward forever')
