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# 初始化參數(shù)
size = 320
screen = pygame.display.set_mode([size,size],0 , 32)
pygame.display.set_caption("貪吃蛇")
cell_size = 20
cell_num = int(size/20)
x , y = [60,0]
# 初始方向向右
dir_snake = 'R'
body_snake = [[0,0],[20,0],[40,0],[60,0]]
# 初始蛇長為3
len_snake = 3
# 初始食物坐標
food_coor = [random.randint(0, cell_num - 1) * 20, random.randint(0, cell_num - 1) * 20, 20, 20]
# 蛇移動速度
clock = pygame.time.Clock()

if [x,y] == food_coor[:2]:
 food_coor = [random.randint(0, cell_num - 1) * 20, random.randint(0, cell_num - 1) * 20, 20, 20]
 if food_coor[:2] in body_snake[-2:-len_snake -1 :-1]:
  food_coor = [random.randint(0, cell_num - 1) * 20, random.randint(0, cell_num - 1) * 20, 20, 20]
 len_snake +=1

if body_snake[-1] in body_snake[-2:-len_snake -1 :-1]:
 pyautogui.alert(text='游戲結束,最終蛇長為{}'.format(len_snake))
 exit()

import pygame , random ,pyautogui
from pygame.locals import *
# 初始化參數(shù)
size = 500
screen = pygame.display.set_mode([size,size],0 , 32)
pygame.display.set_caption("貪吃蛇")
cell_size = 20
cell_num = int(size/20)
x , y = [60,0]
# 初始方向向右
dir_snake = 'R'
body_snake = [[0,0],[20,0],[40,0],[60,0]]
# 初始蛇長為3
len_snake = 3
# 初始食物坐標
food_coor = [random.randint(0, cell_num - 1) * 20, random.randint(0, cell_num - 1) * 20, 20, 20]
# 蛇移動速度
clock = pygame.time.Clock()
# bg
def bg():
 for i in range(0, size , int(cell_size)):
  pygame.draw.line(screen,[72,72,72],[i,0],[i,size])
 for i in range(0, size, int(cell_size)):
  pygame.draw.line(screen, [72, 72, 72], [0, i], [size,i])
# 蛇
def snake(K):
 for x,y in K[:-len_snake - 1:-1]:
  pygame.draw.rect(screen,[255,255,255],[x,y,20,20],0)
# 食物
def food():
 pygame.draw.rect(screen,[255,0,0],food_coor,0)
# 主循環(huán)
def running():
 global x ,y , dir_snake ,food_coor , len_snake
 while True:
  for event in pygame.event.get():
if event.type == QUIT:
 exit()
  screen.fill((40, 43, 46))
  # 方向規(guī)則
  if dir_snake == 'U':
y -= 20
  elif dir_snake == 'R':
x += 20
  elif dir_snake == 'D':
y += 20
  elif dir_snake == 'L':
x -= 20
  # 鍵盤方向控制
  if event.type == KEYDOWN:
if event.key == K_LEFT and dir_snake != 'R':
 dir_snake = 'L'
elif event.key == K_DOWN and dir_snake != 'U':
 dir_snake = 'D'
elif event.key == K_RIGHT and dir_snake != 'L':
 dir_snake = 'R'
elif event.key == K_UP and dir_snake != 'D':
 dir_snake = 'U'
  # 撞墻之后
  if x < 0:
x += size
  elif x >= size:
x -= size
  elif y < 0:
y += size
  elif y >= size:
y -= size
  # draw蛇體
  body_snake.append([x,y])
  snake(body_snake)
  food()
  # 吃到食物后food換位置
  if [x,y] == food_coor[:2]:
food_coor = [random.randint(0, cell_num - 1) * 20, random.randint(0, cell_num - 1) * 20, 20, 20]
if food_coor[:2] in body_snake[-2:-len_snake -1 :-1]:
 food_coor = [random.randint(0, cell_num - 1) * 20, random.randint(0, cell_num - 1) * 20, 20, 20]
len_snake +=1
  # 游戲結束
  if body_snake[-1] in body_snake[-2:-len_snake -1 :-1]:
pyautogui.alert(text='游戲結束,最終蛇長為{}'.format(len_snake))
exit()
  # 格線
  bg()
  # 右下角顯示蛇長
  font = pygame.font.SysFont("simsunnsimsun", 40)
  text_surface = font.render("{}".format(len_snake), True, (255,255, 255))
  screen.blit(text_surface , (size-40,size-40))
  pygame.display.update()
  # 蛇的移動速度隨著蛇的長度而越來越快
  clock.tick(len_snake * 2)
if __name__ == '__main__':
 pygame.init()
 running()