72 lines
2.3 KiB
Python
72 lines
2.3 KiB
Python
"""ParticleInterval module: contains the ParticleInterval class"""
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from pandac.PandaModules import *
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from direct.directnotify.DirectNotifyGlobal import *
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import Interval
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from direct.particles import ParticleEffect
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class ParticleInterval(Interval.Interval):
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# Name counter
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particleNum = 1
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# create ParticleInterval DirectNotify category
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notify = directNotify.newCategory('ParticleInterval')
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# Class methods
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def __init__(self, particleEffect, parent, worldRelative=1, loop=0,
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duration=0.0, name=None):
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"""__init__(particleEffect, parent, worldRelative, loop, duration, name)
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"""
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# Generate unique name
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id = 'Particle-%d' % ParticleInterval.particleNum
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ParticleInterval.particleNum += 1
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if (name == None):
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name = id
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# Record instance variables
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self.particleEffect = particleEffect
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self.parent = parent
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self.worldRelative = worldRelative
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self.fLoop = loop
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assert(duration > 0.0 or loop == 1)
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# Initialize superclass
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Interval.Interval.__init__(self, name, duration)
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def __del__(self):
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if self.particleEffect:
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self.particleEffect.cleanup()
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self.particleEffect = None
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def privInitialize(self, t):
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renderParent = None
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if self.worldRelative:
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renderParent = render
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if self.particleEffect:
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self.particleEffect.start(self.parent, renderParent)
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self.state = CInterval.SStarted
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self.currT = t
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def privStep(self, t):
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if self.state == CInterval.SPaused:
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# Restarting from a pause.
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self.privInitialize(t)
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else:
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self.state = CInterval.SStarted
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self.currT = t
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def privFinalize(self):
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if self.particleEffect:
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self.particleEffect.cleanup()
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self.particleEffect = None
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self.currT = self.getDuration()
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self.state = CInterval.SFinal
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def privInstant(self):
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if self.particleEffect:
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self.particleEffect.cleanup()
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self.particleEffect = None
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self.currT = self.getDuration()
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self.state = CInterval.SFinal
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def privInterrupt(self):
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self.particleEffect.disable()
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self.state = CInterval.SPaused
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