rotation=(0, 0, math.pi),
color=(0.5, 0.5, 0.5)))
default_system.add_global_controller(
Lifetime(3.0),
Movement(min_velocity=5),
Fader(max_alpha=0.7, fade_out_start=1, fade_out_end=3.0),
)
images = [
image.load(os.path.join(os.path.dirname(__file__),
'flare%s.png' % (i + 1))) for i in range(4)
]
group = ParticleGroup(controllers=[comet],
renderer=BillboardRenderer(
SpriteTexturizer.from_images(images)))
pyglet.clock.schedule_interval(default_system.update, (1.0 / 30.0))
pyglet.clock.set_fps_limit(None)
arc_radius = 150
angle = math.pi * 0.7
speed = 1.0
def move_comet(td):
global angle, arc_radius, speed
comet.template.position = (-math.sin(angle) * arc_radius * 0.3,
math.sin(angle * 0.7) * arc_radius * 0.03,
-math.cos(angle) * arc_radius -
arc_radius * 1.05)
comet.template.velocity = (comet.template.position.x * 0.05 -
velocity=(0.7,0.7,0.7), up=(0,0,math.pi), rotation=(0,0,math.pi), color=(0.5, 0.5, 0.5)) ) default_system.add_global_controller( Lifetime(3.0), Movement(min_velocity=5), Fader(max_alpha=0.7, fade_out_start=1, fade_out_end=3.0), ) images = [image.load(os.path.join(os.path.dirname(__file__), 'flare%s.png' % (i+1))) for i in range(4)] group = ParticleGroup(controllers=[comet], renderer=BillboardRenderer(SpriteTexturizer.from_images(images))) pyglet.clock.schedule_interval(default_system.update, (1.0/30.0)) pyglet.clock.set_fps_limit(None) arc_radius = 150 angle = math.pi * 0.7 speed = 1.0 def move_comet(td): global angle, arc_radius, speed comet.template.position = ( -math.sin(angle) * arc_radius * 0.3, math.sin(angle * 0.7) * arc_radius * 0.03, -math.cos(angle) * arc_radius - arc_radius * 1.05) comet.template.velocity = ( comet.template.position.x*0.05 - comet.template.last_position.x,
