def scenario_2():
"""
Declare system with the inheritance based API
"""
class MyEvent(Event):
def on_start(self, context, event):
print(context, '=>', event)
print('STARTED')
def on_cycle_begin(self, context, event):
print('LOOP STARTED')
def on_cycle_end(self, context, event):
print('LOOP FINISHED')
context.stop()
def on_stop(self, context, event):
print('FINISHED')
context.exit()
def on_exit(self, context, event):
print('EXITING')
context = Context()
event = MyEvent(context)
# Make event active
event.activate()
# Start looping
context.start()
def scenario_1():
"""
Declare events with the decorator based API
"""
# Create containers
context = Context()
event = Event(context)
@event
def on_start(context, event):
print(context, '=>', event)
print('STARTED')
@event
def on_cycle_begin(context, event):
print('LOOP STARTED')
@event
def on_cycle_end(context, event):
print('LOOP FINISHED')
context.stop()
@event
def on_stop(context, event):
print('FINISHED')
context.exit()
@event
def on_exit(context, event):
print('EXITING')
# Make event active
event.activate()
# Start looping
context.start()
# Key press events when `event2` is active
@four_keys2
def on_key_pressed_1(context, event, sensor):
print('KEY PRESSED: 1 => TURN LED: OFF')
led2.off()
@four_keys2
def on_key_pressed_2(context, event, sensor):
print('KEY PRESSED: 2 => TURN LED: ON')
led2.on()
@four_keys2
def on_key_pressed_3(context, event, sensor):
print('KEY PRESSED: 3 => SWITCHING MODE: event1')
context.switch(event1)
# Key press events either `event1` or `event2` active
@four_keys1
@four_keys2
def on_key_pressed_4(context, event, sensor):
print('KEY PRESSED: 4 => EXITING...')
context.exit()
# Start event loop
print('STARTING (from event1)')
context.switch(event1)
context.start()
@four_keys2
def on_key_pressed_1(context, event, sensor):
print('KEY PRESSED: 1 => TURN LED: OFF')
led2.off()
@four_keys2
def on_key_pressed_2(context, event, sensor):
print('KEY PRESSED: 2 => TURN LED: ON')
led2.on()
@four_keys2
def on_key_pressed_3(context, event, sensor):
print('KEY PRESSED: 3 => SWITCHING MODE: event1')
context.switch(event1)
# Key press events either `event1` or `event2` active
@four_keys1
@four_keys2
def on_key_pressed_4(context, event, sensor):
print('KEY PRESSED: 4 => EXITING...')
context.exit()
# Start event loop
print('STARTING (from event1)')
context.switch(event1)
context.start()
