def do_test(iters):
start = time.time()
world = b2.World((0, -10), True)
world.create_static_body(shapes=b2.Edge((-40, 0), (40, 0)))
box_half_size = (0.5, 0.5)
box_density = 5.0
box_rows = 20
x = Vec2(-7, 0.75)
delta_x = (0.5625, 1.25)
delta_y = (1.125, 0)
fixture = b2.Fixture(b2.Polygon(box=box_half_size), density=box_density)
for i in range(box_rows):
y = copy(x)
for j in range(i, box_rows):
world.create_dynamic_body(position=y, fixtures=fixture)
y += delta_y
x += delta_x
init_time = time.time() - start
range_ = range(iters)
TIMESTEP = 1.0 / 60
start = time.time()
for i in range_:
world.step(TIMESTEP, 10, 10)
world.clear_forces()
step_time = time.time() - start
return init_time, step_time
def do_test(iters):
start = time.time()
world = b2.World()
columns=5
rows=16
ground = world.create_static_body(
shapes=[
b2.Edge((-40,0),(40,0)),
b2.Edge((20,0),(20,20)),
]
)
box=b2.Fixture(
shape=b2.Polygon(box=(0.5,0.5)),
density=1,
friction=0.3)
circle=b2.Fixture(
shape=b2.Circle(0.5),
density=1,
friction=0.3)
box_start=-10
box_space=2.5
circle_start=8
circle_space=2.5
for j in range(columns):
for i in range(rows):
world.create_dynamic_body(
fixtures=box,
position=(box_start+box_space*j, 0.752 + 1.54 * i)
)
world.create_dynamic_body(
fixtures=circle,
position=(circle_start+circle_space*j, 0.752 + 1.54 * i)
)
init_time = time.time() - start
range_ = range(iters)
TIMESTEP = 1.0 / 60
start = time.time()
for i in range_:
world.step(TIMESTEP, 10, 10)
world.clear_forces()
step_time = time.time() - start
return init_time, step_time
def __init__(self):
self.world = b2.World()
self.world.fixture_destruction_listener = self.fixture_destroyed
self.world.joint_destruction_listener = self.joint_destroyed
print('Initializing pygame framework...')
# Pygame Initialization
pygame.init()
caption = "Pure Python Box2D Testbed - " + self.name
pygame.display.set_caption(caption)
# Screen and debug draw
self.screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
self.font = pygame.font.Font(None, 15)
self.groundbody = self.world.create_static_body()
self.mouse_joint = None
def do_test(iters):
start = time.time()
world = b2.World((0, -10), True)
ground = world.create_static_body(position=(0, -10))
ground.create_polygon_fixture(box=(50, 10))
body = world.create_dynamic_body(position=(0, 4))
body.create_circle_fixture(1.0, density=1.0)
#body.create_polygon_fixture(box=(1, 1), density=1.0, friction=0.3)
init_time = time.time() - start
range_ = range(iters)
start = time.time()
for i in range_:
world.step(0.1, 10, 10)
world.clear_forces()
step_time = time.time() - start
return init_time, step_time
def __init__(self):
self.world = b2d.World(gravity=(0, 10 * 100))
There is no graphical output for this simple example, only text. """ __version__ = "$Revision$" __date__ = "$Date$" # $Source$ import sys sys.path.extend(['..', '.']) import pypybox2d as b2 from pypybox2d.common import * # Create the world, with gravity (0, -10), and allow bodies to sleep (they use # less CPU when not moving) world = b2.World((0, -10), True) # Create a static ground body ground = world.create_static_body(position=(0, -10)) # And attach a Polygon to it. A Fixture holds the shape and contains # such information as its density, friction, etc. The box(hx, hy) # parameter indicates for the polygon to be a box of half width # 50 and half height 10. Since pypybox2d expects MKS units internally, # the box is essentially 100m wide by 10m high. For a static body, this # is just fine. ground.create_polygon_fixture(box=(50, 10)) # Create a dynamic body in the world body = world.create_dynamic_body(position=(0, 4))
if amountOfBlocks > 0:
groundBodyInTheMiddle=world.CreateStaticBody(
position=(xMiddleBlock, yMiddleBlock),
shapes=b2PolygonShape(box=(blockWidth, blockHeight)),
)
if amountOfBlocks > 1:
groundBodyInTheMiddle=world.CreateStaticBody(
position=(-xMiddleBlock, yMiddleBlock + blockHeight),
shapes=b2PolygonShape(box=(blockWidth, blockHeight)),
)
body=world.CreateDynamicBody(position=(x0,y0))
box=body.CreatePolygonFixture(box=(8,8), density=density, friction=friction)
# PYPY version
pypy_world = b2.World((gravity_X, gravity_Y), True)
pypy_ground = pypy_world.create_static_body(position=(0, -10))
pypy_ground.create_polygon_fixture(box=(50, 10))
if amountOfBlocks > 0:
pypy_middle_block = pypy_world.create_static_body(position=(xMiddleBlock, yMiddleBlock))
pypy_middle_block.create_polygon_fixture(box=(blockWidth, blockHeight))
if amountOfBlocks > 1:
pypy_middle_block = pypy_world.create_static_body(position=(-xMiddleBlock, yMiddleBlock + blockHeight))
pypy_middle_block.create_polygon_fixture(box=(blockWidth, blockHeight))
pypy_box=b2.Fixture(
shape=b2.Polygon(box=(8,8)),
density=density,
friction=friction)
