bird.curr = bird.down
if event.type == pygame.KEYUP:
if event.key == pygame.K_SPACE:
bird.curr = bird.up
# Calculate motion
if lift < 0:
gravity = 2
bird.y_axis += gravity
bird.x_axis, bird.y_axis = next_position(bird, screen)
if cloud.x_axis <= -100:
cloud.y_axis = random.randrange(screen.height / 4,
screen.height - screen.height / 4, 100)
cloud.x_axis = screen.width
if obstacle.x_axis <= -obstacle.width:
obstacle = init_obstacle(obstacle, screen)
score_flag = False
if obstacle.x_axis + obstacle.width < bird.x_axis:
if score_flag == False:
play_sound(tick)
score += 1
score_flag = True
obstacle.x_axis -= obstacle.speed
cloud.x_axis -= cloud.speed
lift -= 1
