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 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_10():
"""Burst, emit from center, velocity from angle with spread"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitBurst(BURST_PARTICLE_COUNT // 4),
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_10.__doc__, e
def emitter_11():
"""Burst, emit from center, velocity along a line"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitBurst(BURST_PARTICLE_COUNT // 4),
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_11.__doc__, e
def emitter_9():
"""Burst, emit from center, velocity in fixed angle and random speed"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitBurst(BURST_PARTICLE_COUNT // 4),
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_9.__doc__, e
def emitter_8():
"""Burst, emit from center, velocity in rectangle"""
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_rect((-2.0, -2.0), 4.0, 4.0),
lifetime=DEFAULT_PARTICLE_LIFETIME,
scale=DEFAULT_SCALE,
alpha=DEFAULT_ALPHA))
return emitter_8.__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_7():
"""Burst, emit from center, velocity fixed speed around 360 degrees"""
e = arcadeplus.Emitter(
center_xy=CENTER_POS,
emit_controller=arcadeplus.EmitBurst(BURST_PARTICLE_COUNT // 4),
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_7.__doc__, e
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 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_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_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 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))
