贪吃蛇的python代码

以下是一个简单的贪吃蛇 Python 代码示例：

import pygame
import random

# 初始化 Pygame
pygame.init()

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

# 设置窗口大小
screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))

# 设置字体
font = pygame.font.SysFont(None, 25)

# 定义方块大小
block_size = 20

# 定义蛇的初始位置和长度
def snake(block_size, snake_list):
    for x_y in snake_list:
        pygame.draw.rect(screen, black, [x_y[0], x_y[1], block_size, block_size])

# 显示消息
def message_to_screen(msg, color):
    screen_text = font.render(msg, True, color)
    screen.blit(screen_text, [screen_width/2, screen_height/2])

# 游戏循环
def gameLoop():
    gameExit = False
    gameOver = False

    # 定义蛇的初始位置和长度
    lead_x = screen_width/2
    lead_y = screen_height/2
    lead_x_change = 0
    lead_y_change = 0
    snake_list = []
    snake_length = 1

    # 定义食物的位置
    rand_food_x = round(random.randrange(0, screen_width-block_size)/10.0)*10.0
    rand_food_y = round(random.randrange(0, screen_height-block_size)/10.0)*10.0

    # 游戏循环
    while not gameExit:

        # 游戏结束
        while gameOver == True:
            screen.fill(white)
            message_to_screen("Game over, press C to play again or Q to quit", red)
            pygame.display.update()

            # 判断用户按键
            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        gameExit = True
                        gameOver = False
                    if event.key == pygame.K_c:
                        gameLoop()

        # 判断用户按键
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                gameExit = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    lead_x_change = -block_size
                    lead_y_change = 0
                elif event.key == pygame.K_RIGHT:
                    lead_x_change = block_size
                    lead_y_change = 0
                elif event.key == pygame.K_UP:
                    lead_y_change = -block_size
                    lead_x_change = 0
                elif event.key == pygame.K_DOWN:
                    lead_y_change = block_size
                    lead_x_change = 0

        # 判断蛇是否撞墙
        if lead_x >= screen_width or lead_x < 0 or lead_y >= screen_height or lead_y < 0:
            gameOver = True

        # 移动蛇
        lead_x += lead_x_change
        lead_y += lead_y_change

        # 绘制食物
        screen.fill(white)
        pygame.draw.rect(screen, red, [rand_food_x, rand_food_y, block_size, block_size])

        # 绘制蛇
        snake_head = []
        snake_head.append(lead_x)
        snake_head.append(lead_y)
        snake_list.append(snake_head)
        if len(snake_list) > snake_length:
            del snake_list[0]

        for eachSegment in snake_list[:-1]:
            if eachSegment == snake_head:
                gameOver = True

        snake(block_size, snake_list)
        pygame.display.update()

        # 判断蛇是否吃到食物
        if lead_x == rand_food_x and lead_y == rand_food_y:
            rand_food_x = round(random.randrange(0, screen_width-block_size)/10.0)*10.0
            rand_food_y = round(random.randrange(0, screen_height-block_size)/10.0)*10.0
            snake_length += 1

        # 设置游戏帧率
        clock = pygame.time.Clock()
        clock.tick(15)

    # 退出 Pygame
    pygame.quit()
    quit()

gameLoop()

希望对你有所帮助！