Mercurial > pyntnclick
annotate pyntnclick/sound.py @ 629:660ef5793886 pyntnclick
Remove albow from sound
| author | Neil Muller <neil@dip.sun.ac.za> |
|---|---|
| date | Sat, 11 Feb 2012 22:20:26 +0200 |
| parents | 66c2e084b8b3 |
| children | 8b78fc07a862 |
| rev | line source |
|---|---|
|
583
66c2e084b8b3
Remove unused import and fix comment.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
577
diff
changeset
|
1 # sound management for pyntnclick |
| 107 | 2 |
| 3 # This re-implements some of the albow.resource code to | |
| 4 # a) work around an annoying bugs | |
| 5 # b) add some missing functionality (disable_sound) | |
| 6 | |
| 629 | 7 from random import randrange |
| 8 | |
| 9 | |
| 123 | 10 import pygame |
| 564 | 11 |
| 12 try: | |
| 13 from pygame.mixer import Sound as pygame_Sound | |
| 14 from pygame.mixer import music | |
| 15 pygame_import_error = None | |
| 16 except ImportError, e: | |
| 17 # Save error, so we don't crash and can do the right thing later | |
| 18 pygame_import_error = e | |
| 19 pygame_Sound = None | |
| 20 music = None | |
| 21 | |
| 22 from pyntnclick.resources import ResourceNotFound | |
| 629 | 23 from pyntnclick.engine import MUSIC_ENDED |
| 564 | 24 |
| 629 | 25 |
| 26 class PlayList(object): | |
| 27 """Hold a playlist of music filenames""" | |
| 28 | |
| 29 def __init__(self, pieces, random, repeat): | |
| 30 self._pieces = pieces | |
| 31 self._random = random | |
| 32 self._repeate = repeat | |
| 33 | |
| 34 def get_next(self): | |
| 35 # Get the next piece | |
| 36 if self.pieces: | |
| 37 if self._random: | |
| 38 if not self._repeat or len(self._items) < 3: | |
| 39 i = randrange(0, len(self.items)) | |
| 40 else: | |
| 41 # Ignore the last entry, since we possibly just played it | |
| 42 i = randrange(0, len(self.items) - 1) | |
| 43 else: | |
| 44 i = 0 | |
| 45 result = self.items.pop(i) | |
| 46 if self._repeat: | |
| 47 self.items.push(result) | |
| 48 return result | |
| 49 return None | |
| 107 | 50 |
| 564 | 51 |
| 52 class DummySound(object): | |
| 53 """A dummy sound object. | |
| 54 | |
| 55 This is a placeholder object with the same API as | |
| 56 pygame.mixer.Sound which does nothing. Used when | |
| 57 sounds are disabled so scense don't need to worry | |
| 58 about the details. | |
| 59 | |
| 60 Inpsired by the same idea in Albow (by Greg Ewing)""" | |
| 61 | |
| 565 | 62 def play(self, *args): |
| 63 pass | |
| 564 | 64 |
| 565 | 65 def stop(self): |
| 66 pass | |
| 564 | 67 |
| 565 | 68 def get_length(self): |
| 69 return 0.0 | |
| 564 | 70 |
| 565 | 71 def get_num_channel(self): |
| 72 return 0 | |
| 564 | 73 |
| 565 | 74 def get_volume(self): |
| 75 return 0.0 | |
| 564 | 76 |
| 565 | 77 def fadeout(self, *args): |
| 78 pass | |
| 107 | 79 |
| 534 | 80 |
| 564 | 81 class Sound(object): |
| 82 """Global sound management and similiar useful things""" | |
| 83 | |
| 84 def __init__(self, resource_finder): | |
| 85 self.sound_enabled = False | |
| 86 self.sound_cache = {} | |
| 87 self._resource_finder = resource_finder | |
| 629 | 88 self._current_playlist = None |
| 564 | 89 |
|
576
1b1ab71535bd
Classify constants, which involves a whole bunch of XXX comments
Stefano Rivera <stefano@rivera.za.net>
parents:
572
diff
changeset
|
90 def enable_sound(self, constants): |
| 564 | 91 """Attempt to initialise the sound system""" |
| 92 if pygame_Sound is None: | |
| 93 self.disable_sound(pygame_import_error) | |
| 94 return | |
| 107 | 95 try: |
|
576
1b1ab71535bd
Classify constants, which involves a whole bunch of XXX comments
Stefano Rivera <stefano@rivera.za.net>
parents:
572
diff
changeset
|
96 pygame.mixer.init(constants.snd_freq, |
|
1b1ab71535bd
Classify constants, which involves a whole bunch of XXX comments
Stefano Rivera <stefano@rivera.za.net>
parents:
572
diff
changeset
|
97 constants.snd_bitsize, |
|
1b1ab71535bd
Classify constants, which involves a whole bunch of XXX comments
Stefano Rivera <stefano@rivera.za.net>
parents:
572
diff
changeset
|
98 constants.snd_channels, |
|
1b1ab71535bd
Classify constants, which involves a whole bunch of XXX comments
Stefano Rivera <stefano@rivera.za.net>
parents:
572
diff
changeset
|
99 constants.snd_buffer) |
| 564 | 100 self.sound_enabled = True |
| 629 | 101 music.set_endevent(MUSIC_ENDED) |
| 564 | 102 except pygame.error, exc: |
| 103 self.disable_sound(exc) | |
| 104 | |
| 105 def disable_sound(self, exc=None): | |
| 106 """Disable the sound system""" | |
| 107 self.sound_enabled = False | |
| 108 if exc is not None: | |
| 109 print 'Failed to initialise sound system' | |
| 110 print 'Error: %s' % exc | |
| 111 print 'Sound disabled' | |
| 112 | |
| 113 def get_sound(self, *names): | |
| 114 if not self.sound_enabled: | |
| 565 | 115 return DummySound() |
| 564 | 116 sound = None |
| 117 try: | |
| 577 | 118 path = self._resource_finder.get_resource_path("sounds", *names) |
| 565 | 119 sound = self.sound_cache.get(path, None) |
| 564 | 120 except ResourceNotFound: |
| 577 | 121 print "Sound file not found: %s" % names |
| 564 | 122 # Cache failed lookup |
| 123 sound = DummySound() | |
| 124 self.sound_cache[path] = sound | |
| 125 if sound is None: | |
| 126 try: | |
| 127 sound = pygame_Sound(path) | |
|
570
9c3528c2cbe5
Bug fixes for sound hook-up.
Simon Cross <hodgestar+bzr@gmail.com>
parents:
565
diff
changeset
|
128 except pygame.error: |
| 577 | 129 print "Sound file not found: %s" % names |
| 564 | 130 sound = DummySound() |
| 131 self.sound_cache[path] = sound | |
| 132 return sound | |
| 107 | 133 |
| 564 | 134 def get_playlist(self, pieces, random=False, repeat=False): |
| 629 | 135 return PlayList(pieces, random, repeat) |
| 534 | 136 |
| 629 | 137 def get_music(self, name): |
| 577 | 138 if self.sound_enabled: |
| 629 | 139 music_file = self._resource_finder.get_resource_path("sounds", |
| 140 name) | |
| 141 return music_file | |
| 142 return None | |
| 143 | |
| 144 def music_ended(self): | |
| 145 if self._current_playlist: | |
| 146 # Try start the next tune | |
| 147 self.start_next_music() | |
| 107 | 148 |
| 564 | 149 def change_playlist(self, new_playlist): |
| 577 | 150 if self.sound_enabled: |
| 629 | 151 music.stop_music() |
| 152 self._current_playlist = new_playlist | |
| 153 self.start_next_music() | |
| 154 | |
| 155 def start_next_music(self): | |
| 156 if self._current_playlist: | |
| 157 tune = self._current_playlist.get_next() | |
| 158 if tune: | |
| 159 music.load(tune) | |
| 160 music.play() | |
| 154 | 161 |
| 577 | 162 def get_current_playlist(self): |
| 629 | 163 return self._current_playlist |