game_is_on = True
right_or_left = "right"
screen.update()
while game_is_on:
time.sleep(move_speed)
move_speed *= 0.9
random_num = random.randint(1, 40)
if random_num == 5:
for obstacle in obstacles:
if right_or_left == "right":
obstacle.go_right()
elif right_or_left == "left":
obstacle.go_left()
if right_or_left == "right":
right_or_left = "left"
elif right_or_left == "left":
right_or_left = "right"
if random_num == 20 or random_num == 30:
laser_move_speed += 0.1
random_enemy = random.choice(obstacles)
x = random_enemy.xcor()
y = random_enemy.ycor()
laser = Laser((x, y), "Down")
lasers.append(laser)
for laser in lasers:
