python贪吃蛇完整代码

以下是一个简单的Python贪吃蛇的完整代码示例：

import pygame
import random

# 初始化pygame
pygame.init()

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

# 设置屏幕尺寸
screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("贪吃蛇游戏")

# 定义蛇的初始位置和速度
snake_block = 10
snake_speed = 30
x1 = screen_width / 2
y1 = screen_height / 2
x1_change = 0
y1_change = 0

# 定义食物的初始位置
foodx = round(random.randrange(0, screen_width - snake_block) / 10.0) * 10.0
foody = round(random.randrange(0, screen_height - snake_block) / 10.0) * 10.0

# 定义蛇的身体
snake_body = []
snake_length = 1

clock = pygame.time.Clock()

font_style = pygame.font.SysFont(None, 50)
score_font = pygame.font.SysFont(None, 35)


def score(score):
    value = score_font.render("Score: " + str(score), True, WHITE)
    screen.blit(value, [0, 0])


def snake(snake_block, snake_body):
    for x in snake_body:
        pygame.draw.rect(screen, GREEN, [x[0], x[1], snake_block, snake_block])


def game_loop():
    game_over = False
    game_close = False

    while not game_over:

        while game_close:
            screen.fill(BLACK)
            message = font_style.render("Game Over! Press Q-Quit or C-Play Again", True, RED)
            screen.blit(message, [screen_width / 6, screen_height / 3])
            score(snake_length - 1)
            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        game_loop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_block
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_block
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block
                    x1_change = 0

        if x1 >= screen_width or x1 < 0 or y1 >= screen_height or y1 < 0:
            game_close = True
        x1 += x1_change
        y1 += y1_change
        screen.fill(BLACK)
        pygame.draw.rect(screen, RED, [foodx, foody, snake_block, snake_block])
        snake_head = []
        snake_head.append(x1)
        snake_head.append(y1)
        snake_body.append(snake_head)
        if len(snake_body) > snake_length:
            del snake_body[0]

        for x in snake_body[:-1]:
            if x == snake_head:
                game_close = True

        snake(snake_block, snake_body)
        score(snake_length - 1)

        pygame.display.update()

        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, screen_width - snake_block) / 10.0) * 10.0
            foody = round(random.randrange(0, screen_height - snake_block) / 10.0) * 10.0
            snake_length += 1

        clock.tick(snake_speed)

    pygame.quit()


game_loop()

这是一个简单的贪吃蛇游戏的代码，使用了Pygame库来实现图形化界面和游戏逻辑。你可以将代码复制到Python环境中运行，并使用方向键来控制贪吃蛇的移动。