pygame实现贪吃蛇游戏（下）

if snake_x == bean_x and snake_y == bean_y: bean_x,bean_y = get_bean_pos()

body_arr = [(body_x,body_y)]

for body_x,body_y in body_arr: pygame.draw.rect(screen,yellow,[body_x-20,body_y-20,40,40],5)

body_arr = [(snake_x,snake_y)]+body_arr[:-1]

last_body_x,last_body_y = body_arr[-1]

body_arr.append((last_body_x,last_body_y))

game_state = 1 # 游戏状态1.表示正常 2.表示失败

if game_state == 1 and pygame.time.get_ticks() >= ticks:

for body_x,body_y in body_arr: # 判断下蛇头和身体是否有重合      if snake_x == body_x and snake_y == body_y:        game_state = 2        breakfor i in range(len(body_arr)-1):      for j in range(i+1,len(body_arr)):        if body_arr[i][0] == body_arr[j][0] and body_arr[i][1] == body_arr[j][1]: # 判断下身体每节是否有重合          game_state = 2          break

# -*- coding=utf-8 -*-import randomimport pygamefrom pygame.locals import KEYDOWN,K_LEFT,K_RIGHT,K_UP,K_DOWNpygame.init()screencaption = pygame.display.set_caption('first pygame')screen = pygame.display.set_mode((400,400)) #设置400*400窗口snake_x = random.randint(0,9)*40+20snake_y = random.randint(0,9)*40+20game_state = 1 # 游戏状态1.表示正常 2.表示失败def get_bean_pos(): return random.randint(0,9)*40+20,random.randint(0,9)*40+20 yellow = 255,255,0 bean_x,bean_y = get_bean_pos()diff_ticks = 300 # 移动一次蛇头的事件，单位毫秒ticks = pygame.time.get_ticks()ticks += diff_ticks#dire = random.randint(0,3) # 假设0、1、2、3分别代表方向左、右、上、下if snake_x < 200: dire = 1 # 往右移动else:  dire = 0 # 往左移动 body_y = snake_yif dire == 0: # 向左移动 if snake_x + 40 < 400:   body_x = snake_x + 40 else: # 身体不能放右侧了，只能往上下方向放  if snake_y > 200:   body_x = snake_x   body_y -= 40  else:   body_x = snake_x   body_y += 40else: # 向右移动 if snake_x - 40 > 0:  body_x = snake_x - 40 else: # 身体不能放左侧了，只能往上下方向放  if snake_y > 200:   body_x = snake_x   body_y -= 40  else:   body_x = snake_x   body_y += 40body_arr = [(body_x,body_y)]def set_snake_next_pos(snake_x, snake_y): if dire == 0:  if snake_x - 40 > 0:   snake_x -= 40 if dire == 1:  if snake_x + 40 < 400:   snake_x += 40 if dire == 2:  if snake_y - 40 > 0:   snake_y -= 40 if dire == 3:  if snake_y + 40 < 400:   snake_y += 40 return snake_x,snake_ywhile True: for event in pygame.event.get():   if event.type == pygame.QUIT:    pygame.quit()    exit()   if event.type == KEYDOWN:    if event.key == K_LEFT:     if dire!=0 and dire!=1 and snake_x - 40 > 0: # 和当前方向不是同方向或反方向并且可以左移      dire = 0    if event.key == K_RIGHT:     if dire!=0 and dire!=1 and snake_x + 40 < 400: # 和当前方向不是同方向或反方向并且可以右移      dire = 1    if event.key == K_UP:     if dire!=2 and dire!=3 and snake_y - 40 > 0: # 和当前方向不是同方向或反方向并且可以上移      dire = 2    if event.key == K_DOWN:     if dire!=2 and dire!=3 and snake_y + 40 < 400: # 和当前方向不是同方向或反方向并且可以下移      dire = 3 screen.fill((0,0,255)) # 将界面设置为蓝色 #for x in range(0,400,40): # pygame.draw.line(screen,(255,255,255),(x,0),(x,400),1) #for y in range(0,400,40): # pygame.draw.line(screen,(255,255,255),(0,y),(400,y),1) pygame.draw.circle(screen,yellow,[snake_x,snake_y],20,2) for body_x,body_y in body_arr:  pygame.draw.rect(screen,yellow,[body_x-20,body_y-20,40,40],5)   pygame.draw.circle(screen,yellow,[bean_x,bean_y],10,10)  if game_state == 2:  myfont = pygame.font.Font(None,30)  white = 255,255,255  textImage = myfont.render("Game over", True, white)  screen.blit(textImage, (160,190))  pygame.display.update() # 必须调用update才能看到绘图显示 if game_state == 1 and pygame.time.get_ticks() >= ticks:  last_body_x,last_body_y = body_arr[-1]  body_arr = [(snake_x,snake_y)]+body_arr[:-1]  snake_x,snake_y = set_snake_next_pos(snake_x,snake_y)  ticks += diff_ticks  #if snake_x == bean_x and snake_y == bean_y:  # bean_x,bean_y = get_bean_pos()  # body_arr.append((last_body_x,last_body_y))  for body_x,body_y in body_arr:   if snake_x == body_x and snake_y == body_y: # 判断下蛇头和身体是否有重合    game_state = 2    break  for i in range(len(body_arr)-1):   for j in range(i+1,len(body_arr)):    if body_arr[i][0] == body_arr[j][0] and body_arr[i][1] == body_arr[j][1]: # 判断下身体每节是否有重合     game_state = 2     break  if snake_x == bean_x and snake_y == bean_y:  bean_x,bean_y = get_bean_pos()  body_arr.append((last_body_x,last_body_y))