def __init__(self, configfile, spool=SoundPool()):
# load configuration file
with open(configfile, "r") as f:
data = f.read()
root = XmlEt.fromstring(data).find("Ambient")
# set the name of the ambient
self.name = root.get("name")
LOGGER.logInfo("Ambient '{}'".format(self.name))
# set the update rate from the volatility
self.urate = 1.0 / float(root.get("volatility"))
self.urate = constrain(self.urate, 0.0, 5.0)
# flag indicating whether ambient is currently running
self.loaded = False
self.running = False
# load sounds and sound configuration
self.sounds = list()
self.spool = spool
for soundcfg in root.findall("Sound"):
sfile = soundcfg.get("file")
base = float(soundcfg.get("base"))
drift = float(soundcfg.get("drift"))
self.sounds.append((sfile, base, drift))
LOGGER.logInfo("'{}': [{}] +/- ({})".format(sfile, base, drift))
def switch(self, ambient_id):
if self.ambient != None:
self.ambient.stop()
# switch to new ambient
self.ambient = self.ambients[ambient_id]
LOGGER.logInfo("Switched to ambient '{}'".format(
self.ambient.getName()))
def stop(self):
if not self.loaded:
return
LOGGER.logInfo("'{}' stop".format(self.name))
for sound in self.sounds:
sound.stop()
# indicate stop
self.running = False
def start(self):
if not self.loaded:
self.__load()
LOGGER.logInfo("'{}' start".format(self.name))
for sound in self.sounds:
sound.play()
# indicate start
self.running = True
self.__update()