def emitter_10():
"""Burst, emit from center, velocity from angle with spread"""
e = arcade.Emitter(
center_xy=CENTER_POS,
emit_controller=arcade.EmitBurst(BURST_PARTICLE_COUNT // 4),
particle_factory=lambda emitter: arcade.LifetimeParticle(
filename_or_texture=TEXTURE,
change_xy=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 __init__(self, center_position: Tuple[float, float]):
"""
:param center_position: tuple of x and y coordinates
"""
super().__init__(
center_xy=center_position,
emit_controller=arcade.EmitInterval(0.003),
particle_factory=lambda emitter: arcade.LifetimeParticle(
filename_or_texture=
":resources:images/pinball/pool_cue_ball.png",
change_xy=arcade.rand_vec_spread_deg(180, 25, 1.0),
lifetime=random.uniform(self.PARTICLE_LIFETIME - 1.0, self.
PARTICLE_LIFETIME),
scale=0.1,
alpha=32))
def generate_smoke(self):
"""
Particle generator to create smoking wreck
"""
offset = random.randint(-10, 10)
smoke = arcade.Emitter(
center_xy=(self.center_x + offset, self.center_y + offset),
emit_controller=arcade.EmitMaintainCount(50),
particle_factory=lambda emitter: arcade.FadeParticle(
filename_or_texture=self.texture_smoke,
change_xy=arcade.rand_vec_spread_deg(90, 20, 2),
lifetime=random.random() * 2,
),
)
self.emitter = smoke
return smoke
def dash_emitter_factory(color, pos_a, pos_b):
"""Interval, emit on line"""
logging.info("Creating dash emitter")
if pos_a[0] > pos_b[0]:
angle = 0
else:
angle = 180
textures = [
arcade.Texture(f"{time.time()}", Image.new("RGBA", (10, 10), p))
for p in rand_color(color)
]
line_e = arcade.Emitter(
center_xy=(0.0, 0.0),
emit_controller=arcade.EmitterIntervalWithTime(LINE_EMIT_INTERVAL,
DEFAULT_EMIT_DURATION),
particle_factory=lambda emitter: arcade.LifetimeParticle(
filename_or_texture=random.choice(textures),
change_xy=arcade.rand_in_circle((0.0, 0.0), PARTICLE_SPEED_SLOW),
lifetime=DEFAULT_PARTICLE_LIFETIME,
center_xy=arcade.rand_on_line(pos_a, pos_b),
scale=LINE_SCALE,
alpha=DEFAULT_ALPHA,
),
)
exhaust_plume_e = arcade.Emitter(
center_xy=pos_a,
emit_controller=arcade.EmitterIntervalWithTime(PLUME_EMIT_INTERVAL,
PLUME_EMIT_DURATION),
particle_factory=lambda emitter: arcade.FadeParticle(
filename_or_texture=random.choice(textures),
change_xy=arcade.rand_vec_spread_deg(angle, 25, 4.0),
lifetime=PLUME_PARTICLE_LIFETIME,
scale=PLUME_SCALE,
),
)
return line_e, exhaust_plume_e
def test_rand_vec_spread_deg():
"""Smoke test"""
arcade.rand_vec_spread_deg(-45.0, 5.0, 3.3)