Проект Python мини игра

 import pygame 
import sys 
import random 
 
pygame.init() 
 
WIDTH, HEIGHT = 600, 600 
CELL_SIZE = 20 
GRID_WIDTH = WIDTH // CELL_SIZE 
GRID_HEIGHT = HEIGHT // CELL_SIZE 
 
WHITE = (255, 255, 255) 
BLACK = (0, 0, 0) 
GREEN = (0, 255, 0) 
RED = (255, 0, 0) 
 
screen = pygame.display.set_mode((WIDTH, HEIGHT)) 
pygame.display.set_caption("Snake Game") 
 
clock = pygame.time.Clock() 
FPS = 10 
 
snake = [(GRID_WIDTH // 2, GRID_HEIGHT // 2)] 
direction = (0, -1) 
 
def spawn_food(): 
    while True: 
        food = (random.randint(0, GRID_WIDTH - 1), random.randint(0, GRID_HEIGHT - 1)) 
        if food not in snake: 
            return food 
 
food = spawn_food() 
 
def draw_grid(): 
    for x in range(0, WIDTH, CELL_SIZE): 
        pygame.draw.line(screen, BLACK, (x, 0), (x, HEIGHT)) 
    for y in range(0, HEIGHT, CELL_SIZE): 
        pygame.draw.line(screen, BLACK, (0, y), (WIDTH, y)) 
 
running = True 
while running: 
    for event in pygame.event.get(): 
        if event.type == pygame.QUIT: 
            running = False  # вместо sys.exit(), просто завершаем цикл 
        elif event.type == pygame.KEYDOWN: 
            if event.key == pygame.K_UP and direction != (0, 1): 
                direction = (0, -1) 
            elif event.key == pygame.K_DOWN and direction != (0, -1): 
                direction = (0, 1) 
            elif event.key == pygame.K_LEFT and direction != (1, 0): 
                direction = (-1, 0) 
            elif event.key == pygame.K_RIGHT and direction != (-1, 0): 
                direction = (1, 0) 
 
    head_x, head_y = snake[0] 
    delta_x, delta_y = direction 
    new_head = (head_x + delta_x, head_y + delta_y) 
 
    if (new_head[0] < 0 or new_head[0] >= GRID_WIDTH or 
        new_head[1] < 0 or new_head[1] >= GRID_HEIGHT or 
        new_head in snake): 
        running = False  # завершение игры при столкновении 
 
    snake.insert(0, new_head) 
 
    if new_head == food: 
        food = spawn_food() 
    else: 
        snake.pop() 
 
    screen.fill(WHITE) 
    food_rect = pygame.Rect(food[0] * CELL_SIZE, food[1] * CELL_SIZE, CELL_SIZE, CELL_SIZE) 
    pygame.draw.rect(screen, RED, food_rect) 
 
    for segment in snake: 
        segment_rect = pygame.Rect(segment[0] * CELL_SIZE, segment[1] * CELL_SIZE, CELL_SIZE, CELL_SIZE) 
        pygame.draw.rect(screen, GREEN, segment_rect) 
 
    draw_grid() 
    pygame.display.flip() 
    clock.tick(FPS) 
 
pygame.quit()