Python贪吃蛇小游戏实例分享 Python贪吃蛇小游戏实例分享

本文实例为大家分享了Python实现贪吃蛇小游戏的具体代码，供大家参考，具体内容如下
使用的库
pygame 、random 、pyautogui
流程简述
1.设置初始参数
设置每个网格大小为 20 px ，size可以随意修改但最好为20的倍数，设置初始方向向右，初始蛇长为 3 。

# 初始化参数size = 320screen = pygame.display.set_mode([size,size],0 , 32)pygame.display.set_caption("贪吃蛇")cell_size = 20cell_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]]# 初始蛇长为3len_snake = 3# 初始食物坐标food_coor = [random.randint(0, cell_num - 1) * 20, random.randint(0, cell_num - 1) * 20, 20, 20]# 蛇移动速度clock = pygame.time.Clock()

2.键盘控制
键盘上下左右控制蛇方向，禁止反向。
3.食物
蛇头吃到食物后，蛇长加一，random 一个随机坐标，如果坐标再蛇身上则继续 random。

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

4. 胜负判断
蛇头与蛇身碰撞判输，弹出游戏结束窗口，说明最终蛇长为多长。

if body_snake[-1] in body_snake[-2:-len_snake -1 :-1]:pyautogui.alert(text='游戏结束,最终蛇长为{}'.format(len_snake))exit()

代码及结果
代码

import pygame , random ,pyautoguifrom pygame.locals import *# 初始化参数size = 500screen = pygame.display.set_mode([size,size],0 , 32)pygame.display.set_caption("贪吃蛇")cell_size = 20cell_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]]# 初始蛇长为3len_snake = 3# 初始食物坐标food_coor = [random.randint(0, cell_num - 1) * 20, random.randint(0, cell_num - 1) * 20, 20, 20]# 蛇移动速度clock = pygame.time.Clock()# bgdef 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)# 主循环def running():global x ,y , dir_snake ,food_coor , len_snakewhile True:for event in pygame.event.get():if event.type == QUIT:exit()screen.fill((40, 43, 46))# 方向规则if dir_snake == 'U':y -= 20elif dir_snake == 'R':x += 20elif dir_snake == 'D':y += 20elif dir_snake == 'L':x -= 20# 键盘方向控制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'# 撞墙之后if x < 0:x += sizeelif x >= size:x -= sizeelif y < 0:y += sizeelif y >= size:y -= size# draw蛇体body_snake.append([x,y])snake(body_snake)food()# 吃到食物后food换位置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# 游戏结束if body_snake[-1] in body_snake[-2:-len_snake -1 :-1]:pyautogui.alert(text='游戏结束,最终蛇长为{}'.format(len_snake))exit()# 格线bg()# 右下角显示蛇长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()# 蛇的移动速度随着蛇的长度而越来越快clock.tick(len_snake * 2)if __name__ == '__main__':pygame.init()running()

输出结果