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)
arcade.set_background_color(arcade.color.BLACK)
self.emitters = []
self.frametime_plotter = FrametimePlotter()
self.launch_firework(0)
arcade.schedule(self.launch_spinner, 4.0)
stars = arcade.Emitter(
center_xy=(0.0, 0.0),
emit_controller=arcade.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=arcade.rand_in_rect((0.0, 0.0), SCREEN_WIDTH, SCREEN_HEIGHT)
)
)
self.emitters.append(stars)
self.cloud = arcade.Emitter(
center_xy=(50, 500),
change_xy=(0.15, 0),
emit_controller=arcade.EmitMaintainCount(60),
particle_factory=lambda emitter: AnimatedAlphaParticle(
filename_or_texture=random.choice(CLOUD_TEXTURES),
change_xy=(_Vec2(arcade.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=arcade.rand_in_circle((0.0, 0.0), 50)
)
)
self.emitters.append(self.cloud)
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 __init__(self):
self.w = 600
self.h = 600
arcade.Window.__init__(self, self.w, self.h, "Particles!")
arcade.set_background_color(arcade.color.EERIE_BLACK)
# Sprite for particle from image (try changing to other item numbers! 17 is hearts!)
self.text_blue = arcade.load_texture(
"Sprites/PNG/Items/platformPack_item001.png")
# Sprite for particle pregenerated
self.text_red = arcade.make_soft_circle_texture(20, arcade.color.RED)
self.text_green = arcade.make_soft_square_texture(
50, arcade.color.GREEN, 200, 150)
# Timer for cosine/sine purposes later
self.timer = 0
# Empty list to store our emitters for easy drawing and updating
self.emitters = []
# Make the center, moving emitter
self.fountain = arcade.Emitter(
center_xy=(self.w / 2, self.h / 2), # Position
emit_controller=arcade.EmitInterval(
0.01), # When to make more particles
particle_factory=lambda emitter: arcade.
FadeParticle( # Type of particle
filename_or_texture=self.text_blue, # Particle texture
change_xy=arcade.rand_in_circle(
(0, 0), 4.5), # Particle velocity
lifetime=1.0, # Particle lifetime
scale=0.5, # Particle scaling
),
)
self.cursor = arcade.Emitter(
center_xy=(self.w / 2, self.h / 2),
emit_controller=arcade.EmitMaintainCount(
30), # Alway keep 30 on screen
particle_factory=lambda emitter: arcade.
LifetimeParticle( # Stay bright till end
filename_or_texture=self.text_red,
change_xy=(random.uniform(-1, 1), random.uniform(-1, 1)),
lifetime=random.random(
), # die out at random times, or else this looked weird
scale=1,
),
)
# Add our current, always-on emitters to the list
self.emitters.extend([self.fountain, self.cursor])
def createParticleEmitter(x0, y0, partNB, partSize, partScale, partSpeed,
color, startAlpha, endAlpha):
e = arcade.Emitter(
center_xy=(x0, y0),
emit_controller=arcade.EmitMaintainCount(partNB),
particle_factory=lambda emitter: arcade.FadeParticle(
filename_or_texture=arcade.make_circle_texture(partSize, color),
change_xy=arcade.rand_in_circle((0.0, 0.0), partSpeed),
lifetime=uniform(0.01, 0.4),
scale=partScale,
start_alpha=startAlpha,
end_alpha=endAlpha,
),
)
return e
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 create_emitter(self):
self.emitter = arcade.Emitter(
center_xy=(500, 500),
change_xy=(0.15, 0),
emit_controller=arcade.EmitMaintainCount(60),
particle_factory=lambda emitter: AnimatedAlphaParticle(
filename_or_texture=random.choice(CLOUD_TEXTURES),
change_xy=(_Vec2(arcade.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=arcade.rand_in_circle((0.0, 0.0), 50)
)
)
