Mercurial > rinkhals

annotate gamelib/sound.py @ 520:3e19a7f5333e

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Tweak controls dialog
author Neil Muller <drnlmuller@gmail.com>
date Fri, 27 Nov 2009 14:01:29 +0000
parents 03d5cb669298
children
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1 import os
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2 import sys
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4 import pygame
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5
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6 import data
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7 from config import config
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8 import constants
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10 SOUND_INITIALIZED = False
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12 def init_sound():
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13 """initialize the sound system"""
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14 global SOUND_INITIALIZED
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15 if not config.sound:
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16 return
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17 try:
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18 pygame.mixer.init(constants.FREQ, constants.BITSIZE, constants.CHANNELS, constants.BUFFER)
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19 SOUND_INITIALIZED = True
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20 except pygame.error, exc:
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21 print >>sys.stderr, "Could not initialize sound system: %s" % exc
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23 SOUND_CACHE = {}
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25 def play_sound(filename):
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26 """plays the sound with the given filename from the data sounds directory"""
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27 if not (SOUND_INITIALIZED and config.sound):
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28 return
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29 file_path = data.filepath("sounds", filename)
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30 sound = SOUND_CACHE.get(file_path, None)
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31 if not sound:
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32 if not os.path.exists(file_path):
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33 return
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34 SOUND_CACHE[file_path] = sound = pygame.mixer.Sound(file_path)
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35 sound.play()
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37 CURRENT_MUSIC_FILE = None
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39 def stop_background_music():
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40 """stops any playing background music"""
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41 global CURRENT_MUSIC_FILE
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42 if not (SOUND_INITIALIZED and config.sound):
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43 return
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44 CURRENT_MUSIC_FILE = None
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45 # TODO: fadeout in a background thread
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46 pygame.mixer.music.stop()
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48 def background_music(filename):
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49 """plays the background music with the given filename from the data sounds directory"""
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50 global CURRENT_MUSIC_FILE
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51 if not (SOUND_INITIALIZED and config.sound):
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52 return
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53 file_path = data.filepath("sounds", filename)
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54 if CURRENT_MUSIC_FILE == file_path:
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55 return
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56 stop_background_music()
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57 if not os.path.exists(file_path):
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58 return
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59 CURRENT_MUSIC_FILE = file_path
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60 pygame.mixer.music.load(file_path)
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61 pygame.mixer.music.set_volume(0.3)
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62 pygame.mixer.music.play(-1)
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