def play_sequence(self):
if self.dbg > 0:
print('[+] playing sequence %i' % self._seq_cnt)
# recompute sequence and step durations, and STEP_GRID
self.update_internals()
# initialize the list of played steps
self._step_played = [0]
# ensure we respect sequence duration
T0 = time()
# launch step 0, and loop over all subsequent steps
threadit(self.play_step, (0,))
while time() - T0 < self.SEQ_DUR:
# go over the STEP_GRID step by step, on time
# 1) check in which step we are
step = int((time()-T0) / self.STEP_DUR)
# 2) play all steps that are not yet played
for s in range(self._step_played[-1]+1, step+1):
threadit(self.play_step, (s,))
self._step_played.append(s)
# 3) sleep to wait until next step
sleep(self._TIME_RES)
# reinit internal attribute
self._step_played = []
# update sequence counter
self._seq_cnt += 1
def start(self):
# start the sequencer, backgrounding ._run()
self._running = True
threadit(self._run, ())