def __init__(self):
super(Car, self).__init__()
# The ground -- create some terrain
ground = self.world.create_static_body(shapes=b2.Edge((-20, 0), (20, 0)))
x, y1, dx = 20, 0, 5
vertices = [0.25, 1, 4, 0, 0, -1, -2, -2, -1.25, 0]
for y2 in vertices * 2: # iterate through vertices twice
ground.create_edge_fixture((x, y1), (x + dx, y2), density=0, friction=0.6)
y1 = y2
x += dx
x_offsets = [0, 80, 40, 20, 40]
x_lengths = [40, 40, 10, 40, 0]
y2s = [0, 0, 5, 0, 20]
for x_offset, x_length, y2 in zip(x_offsets, x_lengths, y2s):
x += x_offset
ground.create_edge_fixture((x, 0), (x + x_length, y2), density=0, friction=0.6)
# Teeter
body = self.world.create_dynamic_body(
position=(140, 0.90), fixtures=b2.Fixture(shape=b2.Polygon(box=(10, 0.25)), density=1.0)
)
self.world.create_revolute_joint(
ground,
body,
anchor=body.position,
lower_angle=-8.0 * PI / 180.0,
upper_angle=8.0 * PI / 180.0,
limit_enabled=True,
)
# Bridge
create_bridge(self.world, ground, (2.0, 0.25), (161.0, -0.125), self.bridge_planks)
# Boxes
for y_pos in [0.5, 1.5, 2.5, 3.5, 4.5]:
self.world.create_dynamic_body(
position=(230, y_pos), fixtures=b2.Fixture(shape=b2.Polygon(box=(0.5, 0.5)), density=0.5)
)
car, wheels, springs = create_car(
self.world, offset=(0.0, 1.0), wheel_radius=0.4, wheel_separation=2.0, scale=(1, 1)
)
self.car = car
self.wheels = wheels
self.springs = springs
def __init__(self):
Framework.__init__(self)
world = self.world
ground = world.create_static_body(shapes=b2.Edge((-20, 0),( 20, 0)))
controller = world.create_buoyancy_controller(
offset=15, normal=(0, 1), density=2,
linear_drag=2, angular_drag=1)
# Create a few spheres to bob around
for i in range(7):
body = self.world.create_dynamic_body(
position=(-10+4.0*i, 20),
fixtures=b2.Fixture(shape=b2.Circle(radius=1.0),
density=1.0)
)
controller.add_body(body)
# Create a bridge, and add it to the controller
num_planks = 30
plank_bodies = create_bridge(self.world, ground, (1.0, 0.25), (-14.5, 5), num_planks, 0.2, 1)
for body in plank_bodies:
controller.add_body(body)
# Create a circle underneath the bridge
body = self.world.create_dynamic_body(
position=(-10.0, 0),
fixtures=b2.Fixture(shape=b2.Circle(radius=1.0),
density=1.0)
)
controller.add_body(body)
# And finally, some triangles
for i in range(5):
body = self.world.create_dynamic_body(
position=(-10+3.0*i, 20),
fixtures=b2.Fixture(
shape=b2.Polygon(
vertices=[(-0.5,0),(0,-0.5),(0.5, 0.0)]),
density=1.0)
)
controller.add_body(body)
# And (really) finally this time, just something so we can be sure
# edges work, too.
edge = world.create_dynamic_body(
fixtures=b2.Fixture(shape=b2.Edge((5, 0),(5, 3)),
density=1.0)
)
controller.add_body(edge)
def __init__(self):
Framework.__init__(self)
world = self.world
# Turn off normal gravity
world.gravity = (0, 0)
ground = world.create_static_body(shapes=b2.Edge((-20, 0),( 20, 0)))
controller = world.create_gravity_controller(G=0.8, inv_sqr=True)
# Create a few spheres to bob around
for i in range(1,4):
body = self.world.create_dynamic_body(
position=(0.25 * i, 2.0 + 7.5 * i),
fixtures=b2.Fixture(shape=b2.Circle(radius=0.25 * i),
density=1.0),
bullet=True,
)
controller.add_body(body)
# Create a bridge, and add it to the controller
num_planks = 30
plank_bodies = create_bridge(self.world, ground, (1.0, 0.25), (-14.5, 5), num_planks, 0.2, 10)
for body in plank_bodies:
controller.add_body(body)
# Create a circle underneath the bridge
body = self.world.create_dynamic_body(
position=(-10.0, 0),
fixtures=b2.Fixture(shape=b2.Circle(radius=1.0),
density=10.0)
)
controller.add_body(body)
# And finally, some triangles
for i in range(5):
body = self.world.create_dynamic_body(
position=(-10+3.0*i, 20),
fixtures=b2.Fixture(shape=b2.Polygon(vertices=[(-0.5,0),(0,-0.5),(0.5, 0.0)]),
density=1.0)
)
controller.add_body(body)
def __init__(self):
super(Car, self).__init__()
# The ground -- create some terrain
ground=self.world.create_static_body(
shapes=b2.Edge((-20,0),(20,0))
)
x, y1, dx=20, 0, 5
vertices=[0.25, 1, 4, 0, 0, -1, -2, -2, -1.25, 0]
for y2 in vertices*2: # iterate through vertices twice
ground.create_edge_fixture(
(x,y1), (x+dx,y2),
density=0,
friction=0.6,
)
y1=y2
x += dx
x_offsets=[ 0,80, 40, 20, 40]
x_lengths=[40,40, 10, 40, 0]
y2s =[ 0, 0, 5, 0, 20]
for x_offset, x_length, y2 in zip(x_offsets, x_lengths, y2s):
x += x_offset
ground.create_edge_fixture(
(x, 0), (x+x_length, y2),
density=0,
friction=0.6,
)
# Teeter
body=self.world.create_dynamic_body(
position=(140, 0.90),
fixtures=b2.Fixture(
shape=b2.Polygon(box=(10,0.25)),
density=1.0,
)
)
self.world.create_revolute_joint(
ground,
body,
anchor=body.position,
lower_angle=-8.0*PI/180.0,
upper_angle= 8.0*PI/180.0,
limit_enabled=True,
)
# Bridge
create_bridge(self.world, ground, (2.0, 0.25), (161.0, -0.125), self.bridge_planks)
# Boxes
for y_pos in [0.5, 1.5, 2.5, 3.5, 4.5]:
self.world.create_dynamic_body(
position=(230, y_pos),
fixtures=b2.Fixture(
shape=b2.Polygon(box=(0.5,0.5)),
density=0.5,
)
)
car, wheels, springs=create_car(self.world, offset=(0.0, 1.0), wheel_radius=0.4, wheel_separation=2.0, scale=(1,1))
self.car=car
self.wheels=wheels
self.springs=springs