python简单贪吃蛇代码

好的，下面是一个简单的贪吃蛇代码示例：

import pygame
import random

# 初始化pygame
pygame.init()

# 设置游戏界面大小
screen = pygame.display.set_mode((600, 600))

# 设置游戏标题
pygame.display.set_caption("贪吃蛇")

# 定义颜色
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 255, 0)
RED = (255, 0, 0)

# 定义贪吃蛇类
class Snake(pygame.sprite.Sprite):
    def __init__(self, x, y):
        super().__init__()
        self.image = pygame.Surface((20, 20))
        self.image.fill(GREEN)
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y
        self.speed = 20
        self.direction = "right"
        self.body = [(x, y), (x - 20, y), (x - 40, y)]

    def update(self):
        if self.direction == "right":
            self.rect.x += self.speed
        elif self.direction == "left":
            self.rect.x -= self.speed
        elif self.direction == "up":
            self.rect.y -= self.speed
        elif self.direction == "down":
            self.rect.y += self.speed

        self.body.insert(0, (self.rect.x, self.rect.y))
        self.body.pop()

    def grow(self):
        self.body.append((self.rect.x, self.rect.y))

    def change_direction(self, direction):
        self.direction = direction

# 定义食物类
class Food(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface((20, 20))
        self.image.fill(RED)
        self.rect = self.image.get_rect()
        self.rect.x = random.randint(0, 29) * 20
        self.rect.y = random.randint(0, 29) * 20

# 定义游戏结束函数
def game_over():
    font = pygame.font.Font(None, 36)
    text = font.render("Game Over", True, WHITE)
    screen.blit(text, (250, 250))
    pygame.display.flip()
    pygame.time.wait(3000)
    pygame.quit()

# 创建贪吃蛇和食物对象
snake = Snake(300, 300)
food = Food()

# 创建精灵组
all_sprites = pygame.sprite.Group()
all_sprites.add(snake, food)

# 设置游戏循环
running = True
clock = pygame.time.Clock()
while running:
    # 设置帧率
    clock.tick(10)

    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                snake.change_direction("up")
            elif event.key == pygame.K_DOWN:
                snake.change_direction("down")
            elif event.key == pygame.K_LEFT:
                snake.change_direction("left")
            elif event.key == pygame.K_RIGHT:
                snake.change_direction("right")

    # 判断是否吃到食物
    if snake.rect.colliderect(food.rect):
        food.kill()
        food = Food()
        all_sprites.add(food)
        snake.grow()

    # 判断是否撞到自身或边界
    if snake.rect.x < 0 or snake.rect.x > 580 or snake.rect.y < 0 or snake.rect.y > 580:
        game_over()

    for i in range(1, len(snake.body)):
        if snake.rect.colliderect(pygame.Rect(snake.body[i], (20, 20))):
            game_over()

    # 更新精灵组
    all_sprites.update()

    # 绘制游戏界面
    screen.fill(BLACK)
    all_sprites.draw(screen)
    pygame.display.flip()

# 退出pygame
pygame.quit()

这是一个比较简单的贪吃蛇游戏代码，它使用了pygame库来创建游戏界面和处理事件，通过定义Snake类和Food类来实现贪吃蛇和食物的功能，同时使用精灵组来管理所有的游戏元素。在游戏循环中，每帧都会检测是否吃到食物、是否撞到自身或边界等情况，并更新精灵组和绘制游戏界面。