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annotate nagslang/sound.py @ 547:39fa88b48531

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Please wear goggles at all times while swimming.
author Simon Cross <hodgestar@gmail.com>
date Sat, 07 Sep 2013 21:46:48 +0200
parents 7b121ed73b95
children 8dcf5176ffd8
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1 """Sound utilities."""
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2
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3 from pygame import mixer
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4
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5 from nagslang.options import options
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6 from nagslang.resources import resources
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7 from nagslang.constants import FREQ, BITSIZE, CHANNELS, BUFFER
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8
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9
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10 class DummySound(object):
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11 def init(self):
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12 pass
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13
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14 def play_sound(self, name, volume=None):
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15 pass
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16
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17 def play_music(self, name, volume=None):
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18 pass
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19
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20 def pause_music(self):
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21 pass
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22
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23 def resume_music(self):
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24 pass
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25
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26 def stop(self):
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27 pass
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28
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29
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30 class PygameSound(object):
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31 def __init__(self):
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32 self._sounds = {}
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33
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34 def init(self):
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35 mixer.init(FREQ, BITSIZE, CHANNELS, BUFFER)
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36 self.play_sound("silence.ogg")
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37
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38 def load_sound(self, name):
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39 track_name = resources.get_resource_path("sounds", name)
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40 sound = self._sounds.get(track_name)
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41 if sound is None:
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42 sound = self._sounds[track_name] = mixer.Sound(track_name)
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43 return sound
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44
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45 def play_sound(self, name, volume=1.0):
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46 sound = self.load_sound(name)
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47 if sound is not None:
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48 sound.set_volume(volume)
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49 sound.play()
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50
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51 def play_music(self, name, volume=1.0):
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52 if not options.music:
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53 return
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54 track_name = resources.get_resource_path("music", name)
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55 mixer.music.load(track_name)
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56 mixer.music.set_volume(volume)
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57 mixer.music.play(-1) # loop sound
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58
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59 def pause_music(self):
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60 mixer.music.pause()
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61
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62 def unpause_music(self):
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63 mixer.music.unpause()
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64
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65 def stop(self):
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66 mixer.stop()
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67 mixer.music.stop()
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68
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69
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70 class SoundProxy(object):
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71 def __init__(self):
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72 self._sound = DummySound()
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73
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74 def init(self):
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75 """Attempt to initialize the sound system."""
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76 if options.sound:
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77 try:
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78 pyg_sound = PygameSound()
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79 pyg_sound.init()
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80 self._sound = pyg_sound
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81 except Exception, err:
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82 print "Failed to enable sound: %r" % (err,)
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83
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84 def __getattr__(self, name):
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85 return getattr(self._sound, name)
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86
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87
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88 sound = SoundProxy()