def make_spinner():
spinner = arcadeplus.Emitter(
center_xy=(SCREEN_WIDTH / 2, SPINNER_HEIGHT - 5),
emit_controller=arcadeplus.EmitterIntervalWithTime(0.025, 2.0),
particle_factory=lambda emitter: arcadeplus.FadeParticle(
filename_or_texture=random.choice(STAR_TEXTURES),
change_xy=(0, 6.0),
lifetime=0.2))
spinner.change_angle = 16.28
return spinner
def make_emitter():
return arcadeplus.Emitter(
center_xy=(SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2),
emit_controller=arcadeplus.EmitterIntervalWithTime(0.0004, 15.0),
particle_factory=lambda emitter: arcadeplus.LifetimeParticle(
filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_in_circle((0.0, 0.0), 5.0),
lifetime=1.0,
scale=0.5,
alpha=128
)
)
def emitter_37():
"""Rotating emitter. Particles initial velocity is relative to emitter's angle."""
e = arcadeplus.Emitter(center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.
LifetimeParticle(filename_or_texture=TEXTURE,
change_xy=(0.0, 2.0),
lifetime=2.0,
scale=DEFAULT_SCALE))
e.change_angle = 10.0
return emitter_37.__doc__, e
def emitter_33():
"""Particles that fade over time"""
e = arcadeplus.Emitter(center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.
FadeParticle(filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_in_circle(
(0.0, 0.0), PARTICLE_SPEED_FAST),
lifetime=DEFAULT_PARTICLE_LIFETIME,
scale=DEFAULT_SCALE))
return emitter_33.__doc__, e
def emitter_22():
"""Interval, emit from center, velocity in fixed angle and speed"""
e = arcadeplus.Emitter(center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
0.2, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.
LifetimeParticle(filename_or_texture=TEXTURE,
change_xy=(1.0, 1.0),
lifetime=DEFAULT_PARTICLE_LIFETIME,
scale=DEFAULT_SCALE,
alpha=128))
return emitter_22.__doc__, e
def emitter_28():
"""random particle textures"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL * 5, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.LifetimeParticle(
filename_or_texture=random.choice((TEXTURE, TEXTURE2, TEXTURE3)),
change_xy=arcadeplus.rand_in_circle(
(0.0, 0.0), PARTICLE_SPEED_FAST),
lifetime=DEFAULT_PARTICLE_LIFETIME,
scale=DEFAULT_SCALE))
return emitter_28.__doc__, e
def emitter_24():
"""Interval, emit from center, velocity from angle with spread"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.LifetimeParticle(
filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_vec_spread_deg(90, 45, 2.0),
lifetime=DEFAULT_PARTICLE_LIFETIME,
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_24.__doc__, e
def emitter_23():
"""Interval, emit from center, velocity in fixed angle and random speed"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL * 8, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.LifetimeParticle(
filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_vec_magnitude(45, 1.0, 4.0),
lifetime=DEFAULT_PARTICLE_LIFETIME,
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_23.__doc__, e
def emitter_25():
"""Interval, emit from center, velocity along a line"""
e = arcadeplus.Emitter(center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.
LifetimeParticle(filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_on_line(
(-2, 1), (2, 1)),
lifetime=DEFAULT_PARTICLE_LIFETIME,
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_25.__doc__, e
def emitter_30():
"""random particle alpha"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL * 5, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.LifetimeParticle(
filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_in_circle(
(0.0, 0.0), PARTICLE_SPEED_FAST),
lifetime=DEFAULT_PARTICLE_LIFETIME,
scale=DEFAULT_SCALE,
alpha=random.uniform(32, 128)))
return emitter_30.__doc__, e
def emitter_14():
"""Interval, emit from center, particle lifetime 1.0 seconds"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.LifetimeParticle(
filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_in_circle(
(0.0, 0.0), PARTICLE_SPEED_FAST),
lifetime=1.0,
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_14.__doc__, e
def emitter_20():
"""Interval, emit from center, velocity fixed speed around 360 degrees"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.LifetimeParticle(
filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_on_circle(
(0.0, 0.0), PARTICLE_SPEED_FAST),
lifetime=DEFAULT_PARTICLE_LIFETIME,
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_20.__doc__, e
def emitter_17():
"""Interval, emit on circle"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.LifetimeParticle(
filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_in_circle(
(0.0, 0.0), PARTICLE_SPEED_SLOW),
lifetime=DEFAULT_PARTICLE_LIFETIME,
center_xy=arcadeplus.rand_on_circle((0.0, 0.0), 100),
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_17.__doc__, e
def emitter_35():
"""Use most features"""
soft_circle = arcadeplus.make_soft_circle_texture(80, (255, 64, 64))
textures = (TEXTURE, TEXTURE2, TEXTURE3, TEXTURE4, TEXTURE5, TEXTURE6,
TEXTURE7, soft_circle)
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(0.01, 1.0),
particle_factory=lambda emitter: arcadeplus.FadeParticle(
filename_or_texture=random.choice(textures),
change_xy=arcadeplus.rand_in_circle(
(0.0, 0.0), PARTICLE_SPEED_FAST * 2),
lifetime=random.uniform(1.0, 3.5),
angle=random.uniform(0, 360),
change_angle=random.uniform(-3, 3),
scale=random.uniform(0.1, 0.8)))
return emitter_35.__doc__, e
def emitter_18():
"""Interval, emit in rectangle"""
width, height = 200, 100
centering_offset = (-width / 2, -height / 2)
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithTime(
DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcadeplus.LifetimeParticle(
filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_in_circle(
(0.0, 0.0), PARTICLE_SPEED_SLOW),
lifetime=DEFAULT_PARTICLE_LIFETIME,
center_xy=arcadeplus.rand_in_rect(centering_offset, width, height),
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_18.__doc__, e
def make_rocket(emit_done_cb):
"""Emitter that displays the smoke trail as the firework shell climbs into the sky"""
rocket = RocketEmitter(
center_xy=(random.uniform(100, SCREEN_WIDTH - 100), 25),
emit_controller=arcadeplus.EmitterIntervalWithTime(0.04, 2.0),
particle_factory=lambda emitter: arcadeplus.FadeParticle(
filename_or_texture=ROCKET_SMOKE_TEXTURE,
change_xy=arcadeplus.rand_in_circle((0.0, 0.0), 0.08),
scale=0.5,
lifetime=random.uniform(1.0, 1.5),
start_alpha=100,
end_alpha=0,
mutation_callback=rocket_smoke_mutator),
emit_done_cb=emit_done_cb)
rocket.change_x = random.uniform(-1.0, 1.0)
rocket.change_y = random.uniform(5.0, 7.25)
return rocket
def make_interval_emitter(center_xy: Point,
filenames_and_textures: Sequence[FilenameOrTexture],
emit_interval: float,
emit_duration: float,
particle_speed: float,
particle_lifetime_min: float,
particle_lifetime_max: float,
particle_scale: float = 1.0,
fade_particles: bool = True):
"""Returns an emitter that emits its particles at a constant rate for a given amount of time"""
particle_factory: Type[
arcadeplus.LifetimeParticle] = arcadeplus.LifetimeParticle
if fade_particles:
particle_factory = arcadeplus.FadeParticle
return arcadeplus.Emitter(
center_xy=center_xy,
emit_controller=arcadeplus.EmitterIntervalWithTime(
emit_interval, emit_duration),
particle_factory=lambda emitter: particle_factory(
filename_or_texture=random.choice(filenames_and_textures),
change_xy=arcadeplus.rand_on_circle((0.0, 0.0), particle_speed),
lifetime=random.uniform(particle_lifetime_min,
particle_lifetime_max),
scale=particle_scale))
