def update(self, dt):
for event in self.input.events():
if event.keyboard_key and event.keyboard_key.is_key_down:
if event.keyboard_key.key == Keycode.n:
self.spawn_object()
elif event.keyboard_key.key == Keycode.r:
self.random_collisions = not self.random_collisions
print("Random collisions: {}".format(self.random_collisions))
elif event.keyboard_key.key == Keycode.c:
self.collision_spawning = not self.collision_spawning
if self.collision_spawning:
print("Collision spawning enabled (for one collision)")
elif event.keyboard_key.key == Keycode.s:
self.observed_ball.velocity *= 1.5
elif event.keyboard_key.key == Keycode.t:
print(self.observed_ball.transformation)
print(self.observed_ball.transformation.decompose())
self.observed_ball.transformation = \
(
Transformation(scale=Vector(2., 2.))
| Transformation(translate=Vector(100., 100.))
)
elif event.keyboard_key.key == Keycode.l:
all_balls = [
n for n in self.space.children if isinstance(n, FlyingBall)
]
if all_balls:
target_ball = random.choice(all_balls)
target_ball.lifetime = 1500
if (
event.mouse_button
and event.mouse_button.is_button_down
and event.mouse_button.button == MouseButton.left
):
self.spawn_object(
position=self.camera.unproject_position(
event.mouse_button.position,
),
velocity=Vector(0., 0.),
)
if self.input.keyboard.is_pressed(Keycode.q):
print("q Pressed - Exiting")
self.engine.quit()
self.camera.position = self.observed_ball.position
def __init__(self):
self.square_1 = Node(shape=Polygon.from_box(Vector(100, 100)),
color=Color(1, 0, 0, 1))
self.square_2 = Node(shape=Polygon.from_box(Vector(100, 100)),
color=Color(0, 1, 0, 1))
self.square_3 = Node(shape=Polygon.from_box(Vector(100, 100)),
color=Color(0, 0, 1, 1))
common_trasformation = Transformation.rotate_degrees(
45) | Transformation.translate(Vector(300, 300))
self.square_1.transformation = Transformation.translate(Vector(
-100, 0)) | common_trasformation
self.square_2.transformation = Transformation.translate(Vector(
0, 0)) | common_trasformation
self.square_3.transformation = Transformation.translate(Vector(
100, 0)) | common_trasformation
self.root.add_child(self.square_1)
self.root.add_child(self.square_2)
self.root.add_child(self.square_3)
MyNode(views={1}, position=Vector(200, 200))
def _perform_shape_query(self):
results = self.space.query_shape_overlaps(
self.pointer.shape | Transformation(translate=self.pointer.position),
collision_mask=QueryMask.clickable,
)
print("Shape query results count: {}".format(len(results)))
for r in results:
r.hitbox.color = Color(0., 1., 1., 1.)
r.body.velocity = Vector(0, 0)
for cp in r.contact_points:
self.space.add_child(Node(
position=cp.point_b,
shape=Circle(0.5),
color=Color(1., 0., 0., 1.),
lifetime=0.2,
z_index=3,
))
points_invalid = [
Vector(0., 0.),
Vector(1., 1.),
Vector(1., -1.),
Vector(-1., -1.),
Vector(-1., 1.)
]
fmt_print("classification of polygon {}\n --> {!r}", points,
classify_polygon(points))
fmt_print("classification of polygon {}\n --> {!r}", rev_points,
classify_polygon(rev_points))
fmt_print("classification of polygon {}\n --> {!r}", points_invalid,
classify_polygon(points_invalid))
fmt_print("Transformation()\n --> {}", Transformation())
fmt_print("Transformation.translate(Vector(20, -10))\n --> {}",
Transformation.translate(Vector(20, -10)))
fmt_print("Transformation.rotate_degrees(90)\n --> {}",
Transformation.rotate_degrees(90))
fmt_print("Transformation.scale(Vector(2, 2))\n --> {}",
Transformation.translate(Vector(2, 2)))
fmt_print("Transformation.translate(Vector(20, -10).inverse())\n --> {}",
Transformation.translate(Vector(20, -10)).inverse())
fmt_print("Transformation.scale(Vector(2, 2).inverse())\n --> {}",
Transformation.translate(Vector(2, 2)).inverse())
fmt_print(
"Transformation.scale(Vector(2, 2)) | Transformation.translate(Vector(20, -10))\n --> {}",
Transformation.scale(Vector(2, 2))
| Transformation.translate(Vector(20, -10)))
fmt_print(