python贪吃蛇最简单代码_用python写贪吃蛇

import pygame,sys,random
SCREEN,dirction_node = 600, { 
pygame.K_LEFT:['left',-25],pygame.K_RIGHT:['right',25],pygame.K_UP:['top',-25],pygame.K_DOWN:['top',25]}  # 屏幕尺寸，移动的定义
class Snake:  # 蛇类
def __init__(self):  # 初始化各种需要的属性 [开始时默认向右/身体块x5]
self.dirction, self.body = pygame.K_RIGHT, []
[self.add_node() for _ in range(5)]
def add_node(self):
node = pygame.Rect(((self.body[0].left, self.body[0].top) if self.body else (0, 0)) + (25, 25))  # 随时增加蛇块
setattr(node, dirction_node[self.dirction][0], getattr(node, dirction_node[self.dirction][0]) + dirction_node[self.dirction][1])
self.body.insert(0, node)
def is_dead(self):
body_h = self.body[0]
if body_h.x not in range(SCREEN) or body_h.y not in range(SCREEN) or body_h in self.body[1:]:  # 撞墙、撞自己则死亡
return True
def move(self):
self.add_node()
self.body.pop()
def change_direction(self, curkey):  # 改变方向 但是左右、上下不能被逆向改变
LR, UD = [pygame.K_LEFT, pygame.K_RIGHT], [pygame.K_UP, pygame.K_DOWN]
if curkey in LR + UD:
if not ((curkey in LR) and (self.dirction in LR) or (curkey in UD) and (self.dirction in UD)):
self.dirction = curkey
class Food:  # 食物类
def __init__(self):
self.rect = pygame.Rect(-25, 0, 25, 25)
def remove(self):
self.rect.x = -25
def set(self):
if self.rect.x == -25:
allpos = [pos for pos in range(75, SCREEN - 75, 25)]  # 生成的食物距离墙在75 ~ SCREEN-55 之间
self.rect.left, self.rect.top = random.choice(allpos), random.choice(allpos)
def show_text(screen, pos, text, color, font_size=30):
cur_font = pygame.font.SysFont("SimHei", font_size)  # 设置文字样式
text_fmt = cur_font.render(text, True, color)  # 设置文字内容
screen.blit(text_fmt, pos)  # 绘制文字
def main():
pygame.init()
screen = pygame.display.set_mode((SCREEN, SCREEN))
pygame.display.set_caption('贪吃蛇：是男人就坚持到第10关！')
snake,food,clock, scores, isdead = Snake(),Food(),pygame.time.Clock(), 0, False
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
if event.type == pygame.KEYDOWN:
snake.change_direction(event.key)
if event.key == pygame.K_SPACE and isdead:  # 死后按space重新
return main()
screen.fill((255, 255, 255))
if not isdead:  # 画蛇身 / 每一步+1分
snake.move()
for rect in snake.body:
pygame.draw.rect(screen, (144, 238, 144), rect)
isdead = snake.is_dead()  # 显示死亡文字
if isdead:
show_text(screen, (150, 200), '翻车了！', (227, 29, 18), 80)
show_text(screen, (50, 320), '是男人就超过45KM/h,按空格键重试...', (0, 0, 22))
if food.rect == snake.body[0]:  # 当食物rect与蛇头重合,吃掉 -> Snake增加一个Node
scores += 1  # 食物处理 / 吃到+1分
food.remove()
snake.add_node()
food.set()  # 食物投递
pygame.draw.rect(screen, (233, 150, 122), food.rect)
speed = 10 + scores * 3.5 if scores else 10  # 蛇移动速度
show_text(screen, (20, 550), '关卡:' + str(scores) + ' 速度:' + str(speed) + 'KM/h', (0, 0, 205))  # 显示得分和速度
pygame.display.update()
clock.tick(speed)
main()