def explode_ringed_firework(self, prev_emitter):
"""Actions that happen when a firework shell explodes, resulting in a ringed firework"""
self.emitters.append(make_puff(prev_emitter))
self.emitters.append(make_flash(prev_emitter))
spark_texture, ring_texture = random.choice(SPARK_PAIRS)
sparks = arcadeplus.Emitter(
center_xy=prev_emitter.get_pos(),
emit_controller=arcadeplus.EmitBurst(25),
particle_factory=lambda emitter: arcadeplus.FadeParticle(
filename_or_texture=spark_texture,
change_xy=arcadeplus.rand_in_circle((0.0, 0.0), 8.0),
lifetime=random.uniform(0.55, 0.8),
mutation_callback=firework_spark_mutator))
self.emitters.append(sparks)
ring = arcadeplus.Emitter(
center_xy=prev_emitter.get_pos(),
emit_controller=arcadeplus.EmitBurst(20),
particle_factory=lambda emitter: arcadeplus.FadeParticle(
filename_or_texture=ring_texture,
change_xy=arcadeplus.rand_on_circle(
(0.0, 0.0), 5.0) + arcadeplus.rand_in_circle(
(0.0, 0.0), 0.25),
lifetime=random.uniform(1.0, 1.6),
mutation_callback=firework_spark_mutator))
self.emitters.append(ring)
def emitter_3():
"""Burst, emit in circle"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitBurst(BURST_PARTICLE_COUNT),
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_circle((0.0, 0.0), 100),
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_3.__doc__, e
def emitter_16():
"""Interval, emit in 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_in_circle((0.0, 0.0), 100),
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_16.__doc__, e
def __init__(self):
super().__init__(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
# Set the working directory (where we expect to find files) to the same
# directory this .py file is in. You can leave this out of your own
# code, but it is needed to easily run the examples using "python -m"
# as mentioned at the top of this program.
file_path = os.path.dirname(os.path.abspath(__file__))
os.chdir(file_path)
arcadeplus.set_background_color(arcadeplus.color.BLACK)
self.emitters = []
self.frametime_plotter = FrametimePlotter()
self.launch_firework(0)
arcadeplus.schedule(self.launch_spinner, 4.0)
stars = arcadeplus.Emitter(
center_xy=(0.0, 0.0),
emit_controller=arcadeplus.EmitMaintainCount(20),
particle_factory=lambda emitter: AnimatedAlphaParticle(
filename_or_texture=random.choice(STAR_TEXTURES),
change_xy=(0.0, 0.0),
start_alpha=0,
duration1=random.uniform(2.0, 6.0),
mid_alpha=128,
duration2=random.uniform(2.0, 6.0),
end_alpha=0,
center_xy=arcadeplus.rand_in_rect(
(0.0, 0.0), SCREEN_WIDTH, SCREEN_HEIGHT)))
self.emitters.append(stars)
self.cloud = arcadeplus.Emitter(
center_xy=(50, 500),
change_xy=(0.15, 0),
emit_controller=arcadeplus.EmitMaintainCount(60),
particle_factory=lambda emitter: AnimatedAlphaParticle(
filename_or_texture=random.choice(CLOUD_TEXTURES),
change_xy=(_Vec2(arcadeplus.rand_in_circle(
(0.0, 0.0), 0.04)) + _Vec2(0.1, 0)).as_tuple(),
start_alpha=0,
duration1=random.uniform(5.0, 10.0),
mid_alpha=255,
duration2=random.uniform(5.0, 10.0),
end_alpha=0,
center_xy=arcadeplus.rand_in_circle((0.0, 0.0), 50)))
self.emitters.append(self.cloud)
def make_flash(prev_emitter):
"""Return emitter that displays the brief flash when a firework shell explodes"""
return arcadeplus.Emitter(center_xy=prev_emitter.get_pos(),
emit_controller=arcadeplus.EmitBurst(3),
particle_factory=lambda emitter: arcadeplus.
FadeParticle(filename_or_texture=FLASH_TEXTURE,
change_xy=arcadeplus.rand_in_circle(
(0.0, 0.0), 3.5),
lifetime=0.15))
def make_puff(prev_emitter):
"""Return emitter that generates the subtle smoke cloud left after a firework shell explodes"""
return arcadeplus.Emitter(
center_xy=prev_emitter.get_pos(),
emit_controller=arcadeplus.EmitBurst(4),
particle_factory=lambda emitter: arcadeplus.FadeParticle(
filename_or_texture=PUFF_TEXTURE,
change_xy=(_Vec2(arcadeplus.rand_in_circle(
(0.0, 0.0), 0.4)) + _Vec2(0.3, 0.0)).as_tuple(),
lifetime=4.0))
def emitter_12():
"""Infinite emitting w/ eternal particle"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitInterval(0.02),
particle_factory=lambda emitter: arcadeplus.EternalParticle(
filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_in_circle(
(0.0, 0.0), PARTICLE_SPEED_FAST),
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_12.__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 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_26():
"""Interval, emit particles every 0.4 seconds and stop after emitting 5"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitterIntervalWithCount(0.4, 5),
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=0.6,
alpha=128))
return emitter_26.__doc__, e
def emitter_1():
"""Burst, emit from center, particle lifetime 1.0 seconds"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitBurst(BURST_PARTICLE_COUNT),
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_1.__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_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_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 explode_firework(self, prev_emitter):
"""Actions that happen when a firework shell explodes, resulting in a typical firework"""
self.emitters.append(make_puff(prev_emitter))
self.emitters.append(make_flash(prev_emitter))
spark_texture = random.choice(SPARK_TEXTURES)
sparks = arcadeplus.Emitter(
center_xy=prev_emitter.get_pos(),
emit_controller=arcadeplus.EmitBurst(random.randint(30, 40)),
particle_factory=lambda emitter: arcadeplus.FadeParticle(
filename_or_texture=spark_texture,
change_xy=arcadeplus.rand_in_circle((0.0, 0.0), 9.0),
lifetime=random.uniform(0.5, 1.2),
mutation_callback=firework_spark_mutator))
self.emitters.append(sparks)
def emitter_5():
"""Burst, emit in rectangle"""
width, height = 200, 100
centering_offset = (-width / 2, -height / 2)
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitBurst(BURST_PARTICLE_COUNT),
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_5.__doc__, e
def emitter_34():
"""Dynamically generated textures, burst emitting, fading particles"""
textures = [
arcadeplus.make_soft_circle_texture(48, p)
for p in (arcadeplus.color.GREEN, arcadeplus.color.BLUE_GREEN)
]
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitBurst(BURST_PARTICLE_COUNT),
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),
lifetime=DEFAULT_PARTICLE_LIFETIME,
scale=DEFAULT_SCALE))
return emitter_34.__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 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 explode_sparkle_firework(self, prev_emitter):
"""Actions that happen when a firework shell explodes, resulting in a sparkling firework"""
self.emitters.append(make_puff(prev_emitter))
self.emitters.append(make_flash(prev_emitter))
spark_texture = random.choice(SPARK_TEXTURES)
sparks = arcadeplus.Emitter(
center_xy=prev_emitter.get_pos(),
emit_controller=arcadeplus.EmitBurst(random.randint(30, 40)),
particle_factory=lambda emitter: AnimatedAlphaParticle(
filename_or_texture=spark_texture,
change_xy=arcadeplus.rand_in_circle((0.0, 0.0), 9.0),
start_alpha=255,
duration1=random.uniform(0.6, 1.0),
mid_alpha=0,
duration2=random.uniform(0.1, 0.2),
end_alpha=255,
mutation_callback=firework_spark_mutator))
self.emitters.append(sparks)
def make_burst_emitter(center_xy: Point,
filenames_and_textures: Sequence[FilenameOrTexture],
particle_count: int,
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 all of its particles at once"""
particle_factory: Type[
arcadeplus.LifetimeParticle] = arcadeplus.LifetimeParticle
if fade_particles:
particle_factory = arcadeplus.FadeParticle
return arcadeplus.Emitter(
center_xy=center_xy,
emit_controller=arcadeplus.EmitBurst(particle_count),
particle_factory=lambda emitter: particle_factory(
filename_or_texture=random.choice(filenames_and_textures),
change_xy=arcadeplus.rand_in_circle((0.0, 0.0), particle_speed),
lifetime=random.uniform(particle_lifetime_min,
particle_lifetime_max),
scale=particle_scale))
def emitter_36():
"""Moving emitter. Particles spawn relative to emitter."""
class MovingEmitter(arcadeplus.Emitter):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.elapsed = 0.0
def update(self):
super().update()
self.elapsed += 1 / 60
self.center_x = sine_wave(self.elapsed, 0, SCREEN_WIDTH,
SCREEN_WIDTH / 100)
self.center_y = sine_wave(self.elapsed, 0, SCREEN_HEIGHT,
SCREEN_HEIGHT / 100)
e = MovingEmitter(center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitInterval(0.005),
particle_factory=lambda emitter: arcadeplus.FadeParticle(
filename_or_texture=TEXTURE,
change_xy=arcadeplus.rand_in_circle((0.0, 0.0), 0.1),
lifetime=random.uniform(1.5, 5.5),
scale=random.uniform(0.05, 0.2)))
return emitter_36.__doc__, e
def test_rand_in_circle():
"""Smoke test"""
arcadeplus.rand_in_circle((0, 0), 10.0)
