def screen_logic(self, screen: Screen):
from datetime import datetime, timedelta
t0 = datetime.now()
try:
for t in range(self.seconds + 1):
# For best accuracy, calculate time till next "frame" based on actual time
wait_for_it = t0 + timedelta(seconds=t)
seconds_to_wait = (wait_for_it - datetime.now()).total_seconds()
if seconds_to_wait > 0:
time.sleep(seconds_to_wait)
elif seconds_to_wait < -0.1:
# Skip a frame if we're running late
continue
effects = [Print(screen, FigletText(str(self.seconds - t)), 0)]
scene = Scene(effects, 40)
screen.set_scenes([scene])
# Strange, it seems a few frames need to be skipped.
for _ in range(10):
screen.draw_next_frame(repeat=False)
except StopApplication:
return
def update_screen(self, end_time, loop: asyncio.AbstractEventLoop, screen: Screen):
screen.draw_next_frame()
if loop.time() < end_time:
loop.call_later(0.05, self.update_screen, end_time, loop, screen)
else:
loop.stop()
async def play_order_book(screen: Screen):
while True:
screen.draw_next_frame()
await asyncio.sleep(0.05)
