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)