def move(self):
x, y = self.position
yy = min(self.destination[1], y + self.speed)
if yy == self.destination[1]:
sequences = [Action.move_to(x, yy), Action.call(self.die)]
else:
sequences = [Action.move_to(x, yy), Action.call(self.move)]
self.run_action(Action.sequence(*sequences), 'moving')
def collided_with_enemy(self, other):
self.invisible = True
other.invisible = True
self.remove_all_actions()
other.run_action(
Action.sequence(
Action.call(lambda: Explosion(parent=self.parent,
position=other.position)),
Action.call(functools.partial(self.kill_enemy, other))))
def add_stars(self, count):
path = self.star_path()
for _ in range(count):
x, y = random.uniform(0,
self.size.w), random.uniform(0, self.size.h)
star = ShapeNode(path=path,
position=(x, y),
fill_color='#fff',
stroke_color='#fff')
star.run_action(
A.repeat(
A.sequence(A.wait(random.uniform(2, 20)),
A.fade_to(0.50, 1), A.fade_to(0.75, 1)), 0))
self.add_child(star)
def fire(self):
path = make_path([(0, 0), (0, 1)])
path.line_width = 2
bullet = ShapeNode(path=path,
fill_color='clear',
stroke_color='white',
parent=self)
r = self.ship.rotation
cannon = Point(math.cos(r), math.sin(r)) * 20
bullet.position = self.ship.position + cannon
end = bullet.position + Point(math.cos(r), math.sin(r)) * 350
bullet.run_action(A.sequence(A.move_to(end.x, end.y, 1.5), A.remove()))
sound.play_effect('fire.mp3', looping=False, volume=0.0)
def animate_to(self, value, d=0.2):
from_value = self.value
to_value = value
def anim(from_value, to_value, node, p):
node.set_value(from_value + p * (to_value - from_value))
animation = Action.call(partial(anim, from_value, to_value), d)
self.run_action(animation)
def crash(self):
self.thrust_sound.stop()
sound.play_effect('explosion_large_distant.mp3')
self.fuel = max(self.fuel - 50, 0)
# create ship parts
prevx, prevy = self.points[0]
for x, y in self.points[1:]:
p = Part([(prevx, prevy), Point(x, y)])
p.x, p.y, p.r = self.x + (x + prevx) / 2, self.y + (
y + prevy) / 2, self.r
prevx, prevy = x, y
p.vr = random.uniform(-0.3, 0.3)
p.vx = self.vx + random.uniform(-1, 1)
p.vy = self.vy * -0.3 + 1
p.run_action(A.sequence(A.fade_to(0.25, 30), A.remove()))
self.parent.add_child(p)
def stop(self):
if self.state == 'play' and self.effect:
self.ramp_start = self.effect.volume
self.run_action(
A.sequence(A.call(self.ramp, 0.2), A.call(self.done)))
self.state = 'stopping'
def touch_moved(self, touch):
x, y = touch.location
self.player.run_action(Action.move_to(x, self.player.position.y))
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
tex = SpriteNode(explosion, parent=self, x_scale=2, y_scale=2)
self.run_action(Action.sequence(Action.wait(0.5), Action.remove()))