def update(dt):
global time_left, gameover
time_left -= dt
time_display.text = "%d seconds remaining" % (time_left)
if not gameover and time_left <= 0:
gameover_display.text = "Gameover, press ENTER to restart"
gameover = True
#return
elif not gameover and player.getBody().getPosition()[0] > 3600:
gameover_display.text = "You won! Press ENTER to play again"
gameover = True
player.update()
# Position everything but try to keep player in the middle of the screen
player_pos = player.body.getPosition()[0:2]
player_offset = (window.width / 2 - player_pos[0],
window.height / 2 - player_pos[1])
window_offset = [0, 0]
if player_offset[0] > 0:
window_offset[0] = player_offset[0]
elif player_offset[0] < -(background.image.width - window.width):
window_offset[0] = (background.image.width - window.width +
player_offset[0])
if player_offset[1] > 0:
window_offset[1] = player_offset[1]
elif player_offset[1] < -(background.image.height - window.height):
window_offset[1] = (background.image.height - window.height +
player_offset[1])
object_offset = (player_offset[0] - window_offset[0],
player_offset[1] - window_offset[1])
player.sprite.x, player.sprite.y = (window.width / 2 - window_offset[0],
window.height / 2 - window_offset[1])
background.position = object_offset
# Convert world positions to screen positions
for physics in level_physics:
physics.update()
physics.getSprite().position = get_window_position(physics.getPosition(),
object_offset)
for overlay in level_overlays:
overlay.getSprite().position = get_window_position(
overlay.position, object_offset)
# Physics
global physics_dt
physics_dt += dt
# ODE recomends constant world steps to stop jitter
while physics_dt > PHYSICS_STEP:
space.collide(None, near_callback)
world.step(PHYSICS_STEP)
contactgroup.empty()
physics_dt -= PHYSICS_STEP
def update():
dt = clock.tick(settings.fps) / 1000 # in seconds
camera.main.update(dt)
physics.update()
for entity in EntityManager.entities:
entity.update(dt)
if settings.debug:
print(1 / dt, " FPS")
frame_count = 0
# SUBPROBLEM 4: uncomment the code below.
# preallocate locks for objects
locks_ptr = preallocate_locks(num_balls)
num_to_record = 100
num_recorded = 0
list_of_fps = []
while True: # so we can do a quantitative comparison
with Timer() as t:
update(positions, velocities, grid,
radius, grid_spacing, locks_ptr,
physics_step)
# udpate our estimate of how fast the simulator runs
physics_step = 0.9 * physics_step + 0.1 * t.interval
total_time += t.interval
frame_count += 1
ball_indices = np.arange(num_balls)
if total_time > anim_step:
animator.update(positions)
fps = frame_count / total_time
list_of_fps.append(fps)
print("{} simulation frames per second".format(fps))
animator = Animator(positions, radius * 2)
# simulation/animation time variablees
physics_step = 1.0 / 100 # estimate of real-time performance of simulation
anim_step = 1.0 / 30 # FPS
total_time = 0
frame_count = 0
# SUBPROBLEM 4: uncomment the code below.
# preallocate locks for objects
locks_ptr = preallocate_locks(num_balls)
while True:
with Timer() as t:
update(positions, velocities, grid, radius, grid_size, locks_ptr,
physics_step)
# udpate our estimate of how fast the simulator runs
physics_step = 0.9 * physics_step + 0.1 * t.interval
total_time += t.interval
frame_count += 1
if total_time > anim_step:
animator.update(positions)
print("{} simulation frames per second".format(frame_count /
total_time))
frame_count = 0
total_time = 0
# SUBPROBLEM 3: sort objects by location. Be sure to update the
# grid if objects' indices change! Also be sure to sort the
# velocities with their object positions!
def update(self):
physics.update(self.bodies)
self.do_collisions()
