python做一个贪食蛇的游戏

好的，下面是 Python 实现贪食蛇游戏的示例代码：

import pygame
import random

pygame.init()

# 游戏窗口大小
width = 800
height = 600

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

# 创建窗口
display = pygame.display.set_mode((width, height))
pygame.display.set_caption("贪食蛇")

# 定义贪食蛇的头和身体
block_size = 10
snake_list = []
snake_length = 1

# 定义食物位置
food_x = round(random.randrange(0, width - block_size) / 10.0) * 10.0
food_y = round(random.randrange(0, height - block_size) / 10.0) * 10.0

# 定义贪食蛇移动方向
direction = "right"

# 定义字体
font_style = pygame.font.SysFont(None, 30)

# 显示分数
def show_score(score):
    score_text = font_style.render("得分: " + str(score), True, blue)
    display.blit(score_text, [0, 0])

# 显示贪食蛇
def draw_snake(snake_list, block_size):
    for x in snake_list:
        pygame.draw.rect(display, black, [x[0], x[1], block_size, block_size])

# 开始游戏
def game_loop():
    game_over = False
    game_close = False

    # 贪食蛇的初始位置
    x1 = width / 2
    y1 = height / 2

    # 贪食蛇的移动速度
    x1_change = 0
    y1_change = 0

    # 记录得分
    score = 0

    global direction

    # 游戏循环
    while not game_over:

        # 游戏结束
        while game_close == True:
            # 显示得分
            show_score(score)
            # 提示游戏结束
            message = font_style.render("游戏结束，按 Q 退出，按 C 重新开始", True, red)
            display.blit(message, [(width / 2) - 150, (height / 2) - 50])
            pygame.display.update()

            # 处理按键事件
            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()

        # 处理键盘事件
        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:
                    direction = "left"
                    x1_change = -block_size
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    direction = "right"
                    x1_change = block_size
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    direction = "up"
                    y1_change = -block_size
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    direction = "down"
                    y1_change = block_size
                    x1_change = 0

        # 边界处理
        if x1 >= width or x1 < 0 or y1 >= height or y1 < 0:
            game_close = True

        # 更新贪食蛇位置
        x1 += x1_change
        y1 += y1_change

        # 显示背景
        display.fill(white)

        # 显示食物
        pygame.draw.rect(display, blue, [food_x, food_y, block_size, block_size])

        # 更新贪食蛇的身体
        snake_head = []
        snake_head.append(x1)
        snake_head.append(y1)
        snake_list.append(snake_head)
        if len(snake_list) > snake_length:
            del snake_list[0]

        # 处理贪食蛇吃到食物的情况
        for snake in snake_list[:-1]:
            if snake == snake_head:
                game_close = True

        # 更新得分
        show_score(score)

        # 显示贪食蛇
        draw_snake(snake_list, block_size)
        pygame.display.update()

        # 当贪食蛇吃到食物时，更新食物位置，并增加贪食蛇长度
        if x1 == food_x and y1 == food_y:
            food_x = round(random.randrange(0, width - block_size) / 10.0) * 10.0
            food_y = round(random.randrange(0, height - block_size) / 10.0) * 10.0
            snake_length += 1
            score += 10

        # 控制贪食蛇移动速度
        pygame.time.Clock().tick(20)

    # 退出游戏
    pygame.quit()
    quit()

game_loop()

这是一个比较简单的贪食蛇游戏实现，利用 pygame 库实现图形界面。在游戏中，贪食蛇会自动移动，玩家通过按键控制贪食蛇的移动方向，贪食蛇吃到食物后会增加长度，当贪食蛇碰到墙壁或自身时，游戏结束，并显示得分。