def update_settings(): player.set_instrument(self.selected_instrument.get()) player.set_key(self.selected_key.get(), self.use_accidentals.get()) self.resize(None)
def playsong_aux(fname):
infile = open(fname, 'r')
tempo = 120 # andante
prev_tones = []
line = ''
while G.gui and G.gui.button_demo.get():
line = line.strip()
#G.output('parse line: "%s"' % (line))
if (not len(line)):
line = infile.readline()
if ('' == line):
pygame.mixer.stop()
# turn itself off gui-side
G.gui.buttom_demo.set(0)
G.gui.draw_keyboard()
return None
elif re.match(r'#', line):
G.debug(line)
line = ''
elif re.match(r'\\tempo ([1-9][0-9]*)\s*$', line):
# Yay! I get to pointlessly repeat myself because python doesn't trust the programmer with assignments that evaluate to a value!
matches = re.match(r'\\tempo ([1-9][0-9]*)\s*$', line)
try:
tempo = int(matches.group(1))
G.output('Tempo = %s' % (tempo))
except:
G.error("Can't happen. Invalid tempo: \"" + line + '"')
line = ''
elif re.match(r'\\instrument (.*)', line):
matches = re.match(r'\\instrument (.*)', line)
player.set_instrument(matches.group(1))
line = '' # instruments can have spaces, so this command always uses the entire line
elif re.match(r'\\key (.*)', line):
matches = re.match(r'\\key (.*)', line)
player.set_key(matches.group(1), 0)
line = '' # instruments can have spaces, so this command always uses the entire line
elif re.match(r'\(([~A-G0-8b ]*)\)([1-9][0-9]*\.?)(.*)', line):
matches = re.match(r'\(([~A-G0-8b ]*)\)([1-9][0-9]*\.?)(.*)', line)
# Does admit a few notes that aren't on the keyboard, like G8, but those will get caught by sound_play()
# Also admits things like (C4~3 A)3. If I can nest groups, I *could* catch those, but again, sound_play will handle it.
# The checks here just need to make sure it doesn't do anything that could escape the SOUNDS_DIR
tones = matches.group(1).split()
try:
s = matches.group(2)
duration = 4.0 / float(s) # now equals number of quarter notes
if '.' == s[len(s) - 1]: # dotted note
duration = duration * 1.5;
# Stop the previous set of notes
for tone in prev_tones:
if ('~' + tone) not in tones:
player.sound_stop(tone)
G.gui.key_up(tone)
# Play this set
for (i, tone) in enumerate(tones):
if ('~' != tone[0]):
# If it's a tie, we don't start it over
player.sound_play(tone)
G.gui.key_down(tone)
else:
tones[i] = tone[1:len(tone)] # prev_tones won't care if it was already a tie
prev_tones = tones
# (duration beats) / (tempo beats/minute) * 60 s/min* 1000 ms/s = x ms
ms = int(1000 * 60 * duration / tempo)
pygame.time.delay(ms)
line = matches.group(3)
except:
G.error('Invalid note: "' + line + '"')
print sys.exc_info()
traceback.print_tb(sys.exc_info()[2])
print ''
line = ''
else:
G.error('Syntax error: "' + line + '"')
line = ''
pygame.mixer.stop()
