Пожалуйста, помогите на Python писать игру змейку за 1 час

 import pygame 
import time 
import random 
 
# Инициализация pygame 
pygame.init() 
 
# Задаем размеры окна 
width, height = 800, 600 
cell_size = 20 
 
# Цвета 
white = (255, 255, 255) 
black = (0, 0, 0) 
red = (255, 0, 0) 
green = (0, 255, 0) 
blue = (0, 0, 255) 
 
# Создаем окно 
window = pygame.display.set_mode((width, height)) 
pygame.display.set_caption("Змейка") 
 
# Часы для контроля FPS 
clock = pygame.time.Clock() 
fps = 15 
 
# Шрифт для текста 
font_style = pygame.font.SysFont("bahnschrift", 25) 
score_font = pygame.font.SysFont("comicsansms", 35) 
 
def your_score(score): 
    value = score_font.render("Очки: " + str(score), True, blue) 
    window.blit(value, [0, 0]) 
 
def our_snake(block_size, snake_list): 
    for x in snake_list: 
        pygame.draw.rect(window, green, [x[0], x[1], block_size, block_size]) 
 
def message(msg, color): 
    mesg = font_style.render(msg, True, color) 
    window.blit(mesg, [width / 6, height / 3]) 
 
def game_loop(): 
    game_over = False 
    game_close = False 
 
    x1, y1 = width / 2, height / 2 
    x1_change, y1_change = 0, 0 
 
    snake_list = [] 
    length_of_snake = 1 
 
    foodx = round(random.randrange(0, width - cell_size) / cell_size) * cell_size 
    foody = round(random.randrange(0, height - cell_size) / cell_size) * cell_size 
 
    while not game_over: 
        while game_close: 
            window.fill(black) 
            message("Вы проиграли! Нажмите Q для выхода или C для продолжения", red) 
            your_score(length_of_snake - 1) 
            pygame.display.update() 
 
            for event in pygame.event.get(): 
                if event.type == pygame.KEYDOWN: 
                    if event.key == pygame.K_q: 
                        game_over = True 
                        game_close = False 
                    if event.key == pygame.K_c: 
                        game_loop() 
 
        for event in pygame.event.get(): 
            if event.type == pygame.QUIT: 
                game_over = True 
            if event.type == pygame.KEYDOWN: 
                if event.key == pygame.K_LEFT: 
                    x1_change = -cell_size 
                    y1_change = 0 
                elif event.key == pygame.K_RIGHT: 
                    x1_change = cell_size 
                    y1_change = 0 
                elif event.key == pygame.K_UP: 
                    y1_change = -cell_size 
                    x1_change = 0 
                elif event.key == pygame.K_DOWN: 
                    y1_change = cell_size 
                    x1_change = 0 
 
        if x1 >= width or x1 < 0 or y1 >= height or y1 < 0: 
            game_close = True 
        x1 += x1_change 
        y1 += y1_change 
        window.fill(black) 
        pygame.draw.rect(window, red, [foodx, foody, cell_size, cell_size]) 
        snake_head = [x1, y1] 
        snake_list.append(snake_head) 
        if len(snake_list) > length_of_snake: 
            del snake_list[0] 
 
        for block in snake_list[:-1]: 
            if block == snake_head: 
                game_close = True 
 
        our_snake(cell_size, snake_list) 
        your_score(length_of_snake - 1) 
 
        pygame.display.update() 
 
        if x1 == foodx and y1 == foody: 
            foodx = round(random.randrange(0, width - cell_size) / cell_size) * cell_size 
            foody = round(random.randrange(0, height - cell_size) / cell_size) * cell_size 
            length_of_snake += 1 
 
        clock.tick(fps) 
 
    pygame.quit() 
    quit() 
 
game_loop()