def test_Growth_controller_simple(self):
from lepton import controller
group = self._make_group()
# Simple growth, no damping
growth = controller.Growth(1)
growth(0.2, group)
p = list(group)
self.assertVector(p[0].size, (0.2, 0.2, 0.2))
self.assertVector(p[1].size, (2.2, 2.2, 2.2))
self.assertVector(p[2].size, (3.2, 2.2, 0.2))
def test_Growth_controller_damping_vector(self):
from lepton import controller
group = self._make_group()
# Growth w/damping vector
growth = controller.Growth(growth=(2, 1, 0), damping=(1, 0.9, 0))
growth(0.1, group)
growth(0.1, group)
p = list(group)
self.assertVector(p[0].size, (0.4, 0.19, 0))
self.assertVector(p[1].size, (2.4, 2.19, 2))
self.assertVector(p[2].size, (3.4, 2.19, 0))
def test_Growth_controller_damping_scalar(self):
from lepton import controller
group = self._make_group()
# Growth w/damping
growth = controller.Growth(growth=1, damping=0.9)
growth(0.1, group)
growth(0.1, group)
p = list(group)
self.assertVector(p[0].size, (0.19, 0.19, 0.19))
self.assertVector(p[1].size, (2.19, 2.19, 2.19))
self.assertVector(p[2].size, (3.19, 2.19, 0.19))
def __init__(self, x, y, size):
self.emitter = emitter.StaticEmitter(
template = Particle(
position=(x, y, 0),
color=(1, 1, 1, .01),
velocity=(0, 0, 0),
size=(64, 64, 0),
),
velocity=Disc((0,0,0), (0,0,1), 400),
)
self.group = ParticleGroup(
controllers=[
self.emitter,
controller.Growth(50),
controller.Movement(),
controller.Fader(start_alpha=1,fade_out_start=0,fade_out_end=.7,end_alpha=0),
controller.Lifetime(.7),
],
renderer = Render('point64.png'),
)
self.emitter.emit(50, self.group)
def load(cls):
super(Rocket, cls).load()
img = loader.image('data/sprites/rocket-spark.png')
cls.particle_texture = img
w = img.width
h = img.height
img.anchor_x = w * 0.5
img.anchor_y = h * 0.5
cls.particle_controllers = [
controller.Movement(),
controller.Lifetime(max_age=2),
controller.Growth(30.0),
controller.ColorBlender([
(0, (1.0, 0.9, 0.0, 1.0)),
(1, (0.0, 0.0, 0.0, 0.2)),
(3, (0.0, 0.0, 0.0, 0.0)),
]),
controller.Bounce(domain=domain.Plane((0, SEA_LEVEL, 0),
(0, 1, 0)),
bounce=0.02)
]
cls.particle_renderer = Renderer(cls.particle_texture)
def __init__(self, x1, y1, x2, y2):
self.emitter = emitter.StaticEmitter(
rate = (x2-x1) // 5,
template = Particle(
position=(x1, y1, 0),
color=(1, 1, 1, .5),
velocity=(0, 0, 0),
size=(32, 32, 0),
),
position=Line((x1, y1, 0), (x2, y1, 0)),
velocity=AABox((-100, -50, 0), (100, -200, 1)),
)
self.group = ParticleGroup(
controllers=[
self.emitter,
controller.Movement(),
controller.Growth(100),
controller.Gravity((0, -50, 0)),
controller.Fader(start_alpha=1,fade_out_start=0,fade_out_end=1,end_alpha=0),
controller.Lifetime(2),
],
renderer = Render('black-bubble.png'),
)
self.emitter.emit(1, self.group)
fade_in_end=0.2,
fade_out_start=0.3,
fade_out_end=5.0)
],
texture=load('foam.png'))
smoke_particles = particles.create_group(controllers=[
controller.Movement(),
controller.Lifetime(8),
controller.Fader(start_alpha=0.0,
max_alpha=0.2,
end_alpha=0.0,
fade_in_end=0.0,
fade_out_start=0.5,
fade_out_end=8.0),
controller.Growth(growth=2, )
],
texture=load('smoke.png'))
splinter_controllers = [
controller.Movement(),
controller.Lifetime(3),
controller.Gravity((0, -2, 0)),
controller.Collector(domain=domain.Plane((0, 0, 0), (0, 1, 0)))
]
splinters1 = particles.create_group(controllers=splinter_controllers,
texture=load('splinter1.png'))
splinters2 = particles.create_group(controllers=splinter_controllers,
texture=load('splinter2.png'))
# We should now be able to define all the particle engine stuff
# without code changes to the rest of the game
exhaust = load_texture('exhaust.png')
exhaust_particles = ParticleGroup(
controllers=[
controller.Movement(),
controller.Lifetime(1),
controller.ColorBlender([
(0.0, (1.0, 0.3, 0.3, 0.3)),
(0.2, (1.0, 0.8, 0.3, 0.3)),
(0.5, (1.0, 1.0, 1.0, 0.2)),
(1.0, (1.0, 1.0, 1.0, 0.0)),
]),
controller.Growth(-3)
],
renderer=BillboardRenderer(SpriteTexturizer(exhaust.id)),
)
explosion_particles = ParticleGroup(
controllers=[
controller.Movement(),
controller.Lifetime(2),
controller.Fader(start_alpha=1,
fade_out_start=1,
fade_out_end=2,
end_alpha=0.0)
],
renderer=BillboardRenderer(SpriteTexturizer(exhaust.id)),
)