def __init__(self):

# Called once per game, when game starts

self.world = b2World() # default gravity is (0,-10) and doSleep is True

# terrain_locations = [(1, 0),

# (2, 0),

# (5, 0,),

# (10, 0)]

#

# self.terrain = shapes.create_terrain('water', terrain_locations, self.world)

# Create an object that moves in the box2d world and can be rendered to the screen

#self.many_shapes = [ shapes.LLeftShape(self.world, (random()*100 - 50, random()*30)) for x in range(1,100) ]

self.demo_shape = shapes.LLeftShape(self.world, (5, 5))

# A box2d object that doesn't move and isn't rendered to screen

body_bottom_wall = self.world.CreateStaticBody(

position=(0, -10),

shapes=b2PolygonShape(box=(SCREEN_WIDTH / 2, 5)))

def on_enter(self, previous_scene):

# Called every time the game switches to this scene

pass

def handle_event(self, event):

# Called every time a pygame event is fired

# Processing keyboard input here gives one event per key press

if event.type == pygame.KEYDOWN:

if event.key == pygame.K_SPACE:

# Kick a shape

#kick_shape = self.many_shapes[int(random() * len(self.many_shapes))]

self.demo_shape.body.ApplyLinearImpulse((0, 100), self.demo_shape.body.position, True)

def draw(self, screen):

# Called once per frame, to draw to the screen

screen.fill(black)

#for shape in self.many_shapes:

# shape.draw(screen)

self.demo_shape.draw(screen)

def update(self, dt):

# Called once per frame, to update the state of the game

# Processing keyboard events here lets you track which keys are being held down

# keys = pygame.key.get_pressed()

# if keys[pygame.K_SPACE]:

# self.demo_shape.body.ApplyLinearImpulse((0, 30), self.demo_shape.body.position, True)

# Box2d physics step

self.world.Step(DT_SCALE * dt, VELOCITY_ITERATIONS, POSITION_ITERATIONS)