while hello_kitty:
screen.update()
time.sleep(0.5)
snake.move()
# Detect collision with food
if snake.segments[0].distance(food) < 15:
food.refresh()
snake.grow()
score.increase_score()
# Detect collision with wall
if snake.segments[0].xcor() > 280 or snake.segments[0].xcor() < -280 or snake.segments[0].ycor() > 280 or snake.segments[0].xcor() < -280:
hello_kitty = False
score.game_over()
for segment in snake.segments[1:]:
if snake.segments[0].distance(segment) < 10:
hello_kitty = False
score.game_over()
while current_lane < LAST_LANE_POS:
num_car = random.randint(1,MAX_CAR)
lane = Lane(SCREEN_WIDTH,current_lane,num_car)
lanes.append(lane)
current_lane += LANE_SPACE
score_board = ScoreBoard()
screen.onkey(fun=turtle.move, key="Up")
while game_is_on:
time.sleep(sleep_time)
if turtle.ycor() >= 290:
score_board.increase_level()
turtle.restart()
sleep_time *=.8
for lane in lanes:
lane.reset_lane()
for lane in lanes:
lane.move()
for car in lane.car_list:
if turtle.distance(car) < 20:
game_is_on = False
screen.update()
score_board.game_over()
screen.exitonclick()