ICS3

import pygame

import random

width = 640

height = 400

snake_length = 200

snake_x = width // 2

snake_y = height // 2

snake_dir_x = 0

snake_dir_y = -1

snake_body = []

crashed = False

screen = pygame.display.set_mode((width, height))

pygame.display.set_caption("Snake Game")

clock = pygame.time.Clock()

running = True

while running:

    for event in pygame.event.get():

        if event.type == pygame.QUIT:

            running = False

        elif event.type == pygame.KEYDOWN:

            if event.key == pygame.K_UP and snake_dir_y != 1:

                snake_dir_x = 0

                snake_dir_y = -1

            elif event.key == pygame.K_DOWN and snake_dir_y != -1:

                snake_dir_x = 0

                snake_dir_y = 1

            elif event.key == pygame.K_LEFT and snake_dir_x != 1:

                snake_dir_x = -1

                snake_dir_y = 0

            elif event.key == pygame.K_RIGHT and snake_dir_x != -1:

                snake_dir_x = 1

                snake_dir_y = 0

    snake_x += snake_dir_x

    snake_y += snake_dir_y

    if snake_x < 0 or snake_x >= width or snake_y < 0 or snake_y >= height:

        crashed = True

    if not crashed and (snake_x, snake_y) in snake_body:

        crashed = True

    if crashed:

        running = False

    snake_body.insert(0, (snake_x, snake_y))

    if len(snake_body) > snake_length:

        snake_body.pop()

    screen.fill((0, 0, 0))

    for seg_x, seg_y in snake_body:

        screen.set_at((int(seg_x), int(seg_y)), (255, 255, 255)) 

    pygame.display.flip()

    clock.tick(30)

if crashed:

    print("Crash!")

pygame.quit()