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api to change cutoff

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This commit is contained in:
Joe Shochet 2005-03-11 23:46:26 +00:00
parent 5856cda6de
commit a34532500e
1 changed files with 12 additions and 8 deletions
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20
direct/src/showbase/SfxPlayer.py
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@ -10,24 +10,28 @@ class SfxPlayer:
UseInverseSquare = 0 UseInverseSquare = 0
def __init__(self): def __init__(self):
# Distance at which sounds can no longer be heard
# This was determined experimentally
self.cutoffDistance = 120.0
# cutoff for inverse square attenuation
if SfxPlayer.UseInverseSquare:
self.cutoffDistance = 300.0
# volume attenuates according to the inverse square of the # volume attenuates according to the inverse square of the
# distance from the source. volume = 1/(distance^2) # distance from the source. volume = 1/(distance^2)
# this is the volume at which a sound is nearly inaudible # this is the volume at which a sound is nearly inaudible
self.cutoffVolume = .02 self.cutoffVolume = .02
# cutoff for inverse square attenuation
if SfxPlayer.UseInverseSquare:
self.setCutoffDistance(300.0)
else:
# Distance at which sounds can no longer be heard
# This was determined experimentally
self.setCutoffDistance(120.0)
def setCutoffDistance(self, d):
self.cutoffDistance = d
# this is the 'raw' distance at which the volume of a sound will # this is the 'raw' distance at which the volume of a sound will
# be equal to the cutoff volume # be equal to the cutoff volume
rawCutoffDistance = math.sqrt(1./self.cutoffVolume) rawCutoffDistance = math.sqrt(1./self.cutoffVolume)
# this is a scale factor to convert distances so that a sound # this is a scale factor to convert distances so that a sound
# located at self.cutoffDistance will have a volume # located at self.cutoffDistance will have a volume
# of self.cutoffVolume # of self.cutoffVolume
self.distanceScale = rawCutoffDistance / self.cutoffDistance self.distanceScale = rawCutoffDistance / self.cutoffDistance
def getLocalizedVolume(self, node): def getLocalizedVolume(self, node):
""" """