def __init__(self, point, radius, velocity=Vec2d(0, 0), damage=0):
self.radius = radius
self.damage = damage
inertia = pymunk.moment_for_circle(pymunk.inf, 0, radius)
self._body = pymunk.Body(pymunk.inf, inertia)
self._body.position = point
self._body.velocity = velocity
self._shape = pymunk.Circle(self._body, radius)
self._shape.collision_type = COLLISION_TYPES['explosion']
self._shape._get_explosion = ref(self)
SPACE.add(self._body, self._shape)
SPACE.register_explosion(self)
# play SFX
if settings.SOUND:
sound = random.choice(EXPLOSION_SFX)
# TODO: 3D sound
#volume = (500 - (SPACE.camera_lock()._body.position - self._body.position).length) / 500
#if volume > 0:
# print volume
# sound.volume = random.choice([1.0, .5, .25])
sound.play()
