Source code for usf.music
################################################################################
# copyright 2008 Gabriel Pettier <gabriel.pettier@gmail.com> #
# #
# This file is part of UltimateSmashFriends #
# #
# UltimateSmashFriends is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# UltimateSmashFriends is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with UltimateSmashFriends. If not, see <http://www.gnu.org/licenses/>.#
################################################################################
'''
USF module to load and play musics depending on the situation, not hightly
reusable code.
'''
from pygame import mixer
import os
import time
import random
from usf import loaders
from usf import CONFIG
mixer.init()
[docs]class Music (object):
"""
This class take care of the background music in menus and games, it load the
"playlist" and change the music in random order.
"""
def __init__(self):
"""
We load the playlist.
"""
self.previous_state = None
self.playlists = {}
self.music_volume = CONFIG.audio.MUSIC_VOLUME
preload = ['credits.ogg']
for plist in ['menu', 'game', 'credits', 'victory']:
self.playlists[plist] = [
os.path.join(
CONFIG.system_path,
'music',
'ogg', f)
for f in os.listdir(os.path.join(
CONFIG.system_path,
'music',
'ogg'))
if plist in f]
for f in os.listdir(os.path.join(
CONFIG.system_path, 'music', 'ogg')):
if f in preload:
loaders.track(os.path.join(
CONFIG.system_path, 'music', 'ogg', f))
self.current_track = None
self.time_begin = 0
[docs] def update(self, state):
"""
This check various parameters (state of game, time since last music
change), and may choose to change music (with a fading) if it seems
necessary.
"""
if self.current_track is not None:
if CONFIG.audio.MUSIC_VOLUME != self.music_volume:
self.current_track.set_volume(
CONFIG.audio.MUSIC_VOLUME / 100.0)
if (state != self.previous_state or
(self.current_track and time.time() - self.time_begin
+ 4 > self.current_track.get_length())
or self.current_track is None):
self.change_music(self.playlists[state])
self.music_volume = CONFIG.audio.MUSIC_VOLUME
self.previous_state = state
[docs] def change_music(self, music, fading=True):
"""
This change the currently played music. With an optional fading.
"""
#logging.debug('launching music: '+str(music.get_length()))
self.time_begin = time.time()
if fading:
if self.current_track:
self.current_track.fadeout(3000)
self.current_track = loaders.track(random.choice(music))
if self.current_track:
self.current_track.set_volume(
CONFIG.audio.MUSIC_VOLUME / 100.0)
self.current_track.play(fade_ms=3000)
else:
self.current_track = music
self.current_track.play()