贪吃蛇的Python代码

以下是一个简单的贪吃蛇游戏的Python代码：

import pygame
import random

# 初始化pygame
pygame.init()

# 设置游戏窗口的宽度和高度
window_width = 800
window_height = 600

# 创建游戏窗口
game_window = pygame.display.set_mode((window_width, window_height))

# 设置游戏标题
pygame.display.set_caption('Snake Game')

# 设置游戏的帧率
clock = pygame.time.Clock()

# 定义颜色
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)
green = (0, 255, 0)

# 设置贪吃蛇的初始位置和大小
snake_block_size = 10
snake_speed = 15

# 定义游戏字体
font_style = pygame.font.SysFont(None, 50)

# 定义显示分数的函数
def display_score(score):
    score_text = font_style.render('Score: ' + str(score), True, green)
    game_window.blit(score_text, [0, 0])

# 定义绘制贪吃蛇的函数
def draw_snake(snake_block_size, snake_list):
    for x in snake_list:
        pygame.draw.rect(game_window, black, [x[0], x[1], snake_block_size, snake_block_size])

# 定义主游戏循环
def game_loop():
    game_over = False
    game_close = False

    # 初始化贪吃蛇的初始位置和大小
    x1 = window_width / 2
    y1 = window_height / 2

    # 定义贪吃蛇的位置列表和长度
    snake_list = []
    length_of_snake = 1

    # 定义食物的位置
    foodx = round(random.randrange(0, window_width - snake_block_size) / 10.0) * 10.0
    foody = round(random.randrange(0, window_height - snake_block_size) / 10.0) * 10.0

    # 主游戏循环
    while not game_over:

        # 游戏结束，显示游戏结果
        while game_close == True:
            game_window.fill(white)
            game_over_text = font_style.render("Game Over!", True, red)
            game_window.blit(game_over_text, [window_width/3, window_height/3])
            display_score(length_of_snake - 1)
            pygame.display.update()

            # 等待用户输入
            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()

        # 处理游戏事件
        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 -= snake_block_size
                elif event.key == pygame.K_RIGHT:
                    x1 += snake_block_size
                elif event.key == pygame.K_UP:
                    y1 -= snake_block_size
                elif event.key == pygame.K_DOWN:
                    y1 += snake_block_size

        # 判断是否撞墙
        if x1 >= window_width or x1 < 0 or y1 >= window_height or y1 < 0:
            game_close = True

        # 更新贪吃蛇的位置
        x1 += 0
        y1 += 0

        # 绘制游戏窗口
        game_window.fill(white)
        pygame.draw.rect(game_window, red, [foodx, foody, snake_block_size, snake_block_size])

        # 更新贪吃蛇的长度
        snake_head = []
        snake_head.append(x1)
        snake_head.append(y1)
        snake_list.append(snake_head)
        if len(snake_list) > length_of_snake:
            del snake_list[0]

        # 判断是否吃到了食物
        for x in snake_list[:-1]:
            if x == snake_head:
                game_close = True

        # 绘制贪吃蛇和分数
        draw_snake(snake_block_size, snake_list)
        display_score(length_of_snake - 1)
        pygame.display.update()

        # 判断是否吃到了食物，更新食物位置
        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, window_width - snake_block_size) / 10.0) * 10.0
            foody = round(random.randrange(0, window_height - snake_block_size) / 10.0) * 10.0
            length_of_snake += 1

        # 控制游戏帧率
        clock.tick(snake_speed)

    # 退出pygame
    pygame.quit()

# 运行游戏循环
game_loop()

此代码只是一个简单的贪吃蛇游戏，可以根据需要进行修改和改进。