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Particle.py
48 lines (39 loc) · 1.47 KB
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Particle.py
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from Vector import Vector
from Options import Options
class Particle(object):
def __init__(self, state, position=Vector(0, 0, 0), momentum=Vector(0, 0, 0)):
self.spawnTime = state.currentTime
self.state = state
self.lifeTime = 0
self.momentum = momentum
self.position = position
self.destroyOnCollision = False
self.physicsName = 'particles'
self.handlers = []
self.addHandler(self.handleLifetime)
self.name = 'particle'
self.values = Options()
self.values.add('unattractable', False)
self.values.add('ignoreGravity', False)
self.values.add('ignoreDrag', False)
def __getattr__(self, key):
return self.values.get(key)
def spawn(self):
list = getattr(self.state.physics, self.physicsName)
list.append(self)
def addHandler(self, handler):
self.handlers.append(handler)
def handleLifetime(self):
parts = []
cparts = getattr(self.state.physics, self.physicsName)
for particle in cparts:
if particle.lifeTime:
if self.state.currentTime - particle.spawnTime > particle.lifeTime:
continue
parts.append(particle)
setattr(self.state.physics, self.physicsName, parts)
def getTimeToLife(self):
return self.lifeTime - (self.state.currentTime - self.spawnTime)
def handle(self):
for handler in self.handlers:
handler()