def emitter_27(): """Maintain a steady count of particles""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitMaintainCount(3), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_on_circle(Vec2d.zero(), 2.0), lifetime=random.uniform(1.0, 3.0), )) return emitter_27.__doc__, e
def make_emitter(): return arcade.Emitter( pos=Vec2d(SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2), # pos=Vec2d.zero(), emit_controller=arcade.EmitterIntervalWithTime(0.0004, 15.0), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_in_circle(Vec2d.zero(), 5.0), lifetime=1.0, scale=0.5, alpha=128))
def emitter_10(): """Burst, emit from center, velocity from angle with spread""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT // 4), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.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_9(): """Burst, emit from center, velocity in fixed angle and random speed""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT // 4), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.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_26(): """Interval, emit particles every 0.4 seconds and stop after emitting 5""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitterIntervalWithCount(0.4, 5), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_in_circle(Vec2d.zero(), PARTICLE_SPEED_FAST), lifetime=DEFAULT_PARTICLE_LIFETIME, scale=0.6, alpha=128)) return emitter_26.__doc__, e
def emitter_28(): """random particle textures""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime( DEFAULT_EMIT_INTERVAL * 5, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=random.choice((TEXTURE, TEXTURE2, TEXTURE3)), vel=arcade.rand_in_circle(Vec2d.zero(), PARTICLE_SPEED_FAST), lifetime=DEFAULT_PARTICLE_LIFETIME, scale=DEFAULT_SCALE)) return emitter_28.__doc__, e
def emitter_1(): """Burst, emit from center, particle lifetime 1.0 seconds""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_in_circle(Vec2d.zero(), 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 = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT // 4), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_on_circle(Vec2d.zero(), PARTICLE_SPEED_FAST), lifetime=DEFAULT_PARTICLE_LIFETIME, scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA)) return emitter_7.__doc__, e
def emitter_11(): """Burst, emit from center, velocity along a line""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT // 4), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_on_line(Vec2d(-2, 1), Vec2d(2, 1)), lifetime=DEFAULT_PARTICLE_LIFETIME, scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA)) return emitter_11.__doc__, e
def emitter_3(): """Burst, emit in circle""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_in_circle(Vec2d.zero(), PARTICLE_SPEED_SLOW), lifetime=DEFAULT_PARTICLE_LIFETIME, pos=arcade.rand_in_circle(Vec2d.zero(), 100), scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA)) return emitter_3.__doc__, e
def emitter_24(): """Interval, emit from center, velocity from angle with spread""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.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_30(): """random particle alpha""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime( DEFAULT_EMIT_INTERVAL * 5, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_in_circle(Vec2d.zero(), PARTICLE_SPEED_FAST), lifetime=DEFAULT_PARTICLE_LIFETIME, scale=DEFAULT_SCALE, alpha=random.uniform(32, 128))) return emitter_30.__doc__, e
def emitter_25(): """Interval, emit from center, velocity along a line""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_on_line(Vec2d(-2, 1), Vec2d(2, 1)), lifetime=DEFAULT_PARTICLE_LIFETIME, scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA)) return emitter_25.__doc__, e
def emitter_20(): """Interval, emit from center, velocity fixed speed around 360 degrees""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_on_circle(Vec2d.zero(), PARTICLE_SPEED_FAST), lifetime=DEFAULT_PARTICLE_LIFETIME, scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA)) return emitter_20.__doc__, e
def emitter_32(): """animate particle angle""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime( DEFAULT_EMIT_INTERVAL * 5, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE2, vel=arcade.rand_in_circle(Vec2d.zero(), PARTICLE_SPEED_FAST), lifetime=DEFAULT_PARTICLE_LIFETIME, change_angle=2, scale=DEFAULT_SCALE)) return emitter_32.__doc__, e
def emitter_14(): """Interval, emit from center, particle lifetime 1.0 seconds""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_in_circle(Vec2d.zero(), PARTICLE_SPEED_FAST), lifetime=1.0, scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA)) return emitter_14.__doc__, e
def emitter_2(): """Burst, emit from center, particle lifetime random in range""" e = arcade.Emitter( center_xy=CENTER_POS, emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, change_xy=arcade.rand_in_circle((0.0, 0.0), PARTICLE_SPEED_FAST), lifetime=random.uniform(DEFAULT_PARTICLE_LIFETIME - 1.0, DEFAULT_PARTICLE_LIFETIME), scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA)) return emitter_2.__doc__, e
def emitter_8(): """Burst, emit from center, velocity in rectangle""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_in_rect(Vec2d(-2.0, -2.0), 4.0, 4.0), lifetime=DEFAULT_PARTICLE_LIFETIME, pos=Vec2d.zero(), scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA)) return emitter_8.__doc__, e
def emitter_23(): """Interval, emit from center, velocity in fixed angle and random speed""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime( DEFAULT_EMIT_INTERVAL * 8, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.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_22(): """Interval, emit from center, velocity in fixed angle and speed""" e = arcade.Emitter( center_xy=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(0.2, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.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_17(): """Interval, emit on circle""" e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_in_circle(Vec2d.zero(), PARTICLE_SPEED_SLOW), lifetime=DEFAULT_PARTICLE_LIFETIME, pos=arcade.rand_on_circle(Vec2d.zero(), 100), scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA)) return emitter_17.__doc__, e
def emitter_15(): """Interval, emit from center, particle lifetime random in range""" e = arcade.Emitter( center_xy=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, change_xy=arcade.rand_in_circle((0.0, 0.0), PARTICLE_SPEED_FAST), lifetime=random.uniform(DEFAULT_PARTICLE_LIFETIME - 1.0, DEFAULT_PARTICLE_LIFETIME), scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA ) ) return emitter_15.__doc__, e
def emitter_29(): """random particle scale""" e = arcade.Emitter( center_xy=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL * 5, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, change_xy=arcade.rand_in_circle((0.0, 0.0), PARTICLE_SPEED_FAST), lifetime=DEFAULT_PARTICLE_LIFETIME, scale=random.uniform(0.1, 0.8), alpha=DEFAULT_ALPHA ) ) return emitter_29.__doc__, e
def emitter_31(): """Constant particle angle""" e = arcade.Emitter( center_xy=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL * 5, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE2, change_xy=arcade.rand_in_circle((0.0, 0.0), PARTICLE_SPEED_FAST), lifetime=DEFAULT_PARTICLE_LIFETIME, angle=45, scale=DEFAULT_SCALE ) ) return emitter_31.__doc__, e
def emitter_21(): """Interval, emit from center, velocity in rectangle""" e = arcade.Emitter( center_xy=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, change_xy=arcade.rand_in_rect((-2.0, -2.0), 4.0, 4.0), lifetime=DEFAULT_PARTICLE_LIFETIME, scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA ) ) return emitter_21.__doc__, e
def emitter_13(): """Interval, emit particle every 0.01 seconds for one second""" e = arcade.Emitter( center_xy=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, change_xy=arcade.rand_in_circle((0.0, 0.0), PARTICLE_SPEED_FAST), lifetime=DEFAULT_PARTICLE_LIFETIME, scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA ) ) return emitter_13.__doc__, e
def emitter_37(): """Rotating emitter. Particles initial velocity is relative to emitter's angle.""" e = arcade.Emitter( center_xy=CENTER_POS, emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.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_5(): """Burst, emit in rectangle""" width, height = 200, 100 centering_offset = Vec2d(-width / 2, -height / 2) e = arcade.Emitter( pos=CENTER_POS, emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, vel=arcade.rand_in_circle(Vec2d.zero(), PARTICLE_SPEED_SLOW), lifetime=DEFAULT_PARTICLE_LIFETIME, pos=arcade.rand_in_rect(centering_offset, width, height), scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA)) return emitter_5.__doc__, e
def emitter_19(): """Interval, emit on line""" e = arcade.Emitter( center_xy=(0.0, 0.0), emit_controller=arcade.EmitterIntervalWithTime(DEFAULT_EMIT_INTERVAL, DEFAULT_EMIT_DURATION), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, change_xy=arcade.rand_in_circle((0.0, 0.0), PARTICLE_SPEED_SLOW), lifetime=DEFAULT_PARTICLE_LIFETIME, center_xy=arcade.rand_on_line((0.0, 0.0), (SCREEN_WIDTH, SCREEN_HEIGHT)), scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA ) ) return emitter_19.__doc__, e
def emitter_6(): """Burst, emit on line""" e = arcade.Emitter( center_xy=CENTER_POS, emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT), particle_factory=lambda emitter: arcade.LifetimeParticle( filename_or_texture=TEXTURE, change_xy=arcade.rand_in_circle((0.0, 0.0), PARTICLE_SPEED_SLOW), lifetime=DEFAULT_PARTICLE_LIFETIME, center_xy=arcade.rand_on_line((0.0, 0.0), (SCREEN_WIDTH, SCREEN_HEIGHT)), scale=DEFAULT_SCALE, alpha=DEFAULT_ALPHA ) ) return emitter_6.__doc__, e