python贪吃蛇最简单代码

下面是一个简单的 Python 贪吃蛇游戏的代码：

import pygame, sys, time, random
from pygame.locals import *

# 初始化 Pygame
pygame.init()

# 设置游戏界面大小及标题
width = 640
height = 480
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption('Snake')

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

# 设置游戏帧率
fps = pygame.time.Clock()

# 定义蛇的初始位置和大小
snake_position = [100, 100]
snake_body = [[100, 100], [90, 100], [80, 100]]

# 定义食物的初始位置
food_position = [300, 300]
food_spawned = 1

# 定义方向
direction = 'RIGHT'
change_to = direction

# 定义分数
score = 0

# 定义游戏结束函数
def game_over():
    font = pygame.font.SysFont('Arial', 30)
    game_over_text = font.render('Game Over!', True, white)
    game_over_rect = game_over_text.get_rect()
    game_over_rect.midtop = (width / 2, height / 4)
    screen.blit(game_over_text, game_over_rect)
    pygame.display.flip()
    time.sleep(2)
    pygame.quit()
    sys.exit()

# 游戏循环
while True:
    # 处理事件
    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == KEYDOWN:
            if event.key == K_RIGHT or event.key == ord('d'):
                change_to = 'RIGHT'
            if event.key == K_LEFT or event.key == ord('a'):
                change_to = 'LEFT'
            if event.key == K_UP or event.key == ord('w'):
                change_to = 'UP'
            if event.key == K_DOWN or event.key == ord('s'):
                change_to = 'DOWN'
            if event.key == K_ESCAPE:
                pygame.event.post(pygame.event.Event(QUIT))

    # 判断方向是否相反
    if change_to == 'RIGHT' and not direction == 'LEFT':
        direction = 'RIGHT'
    if change_to == 'LEFT' and not direction == 'RIGHT':
        direction = 'LEFT'
    if change_to == 'UP' and not direction == 'DOWN':
        direction = 'UP'
    if change_to == 'DOWN' and not direction == 'UP':
        direction = 'DOWN'

    # 根据方向移动蛇头位置
    if direction == 'RIGHT':
        snake_position[0] += 10
    if direction == 'LEFT':
        snake_position[0] -= 10
    if direction == 'UP':
        snake_position[1] -= 10
    if direction == 'DOWN':
        snake_position[1] += 10

    # 判断是否吃到食物
    if snake_position[0] == food_position[0] and snake_position[1] == food_position[1]:
        food_spawned = 0
        score += 1
    else:
        # 移除蛇尾
        snake_body.pop()

    # 生成食物
    if not food_spawned:
        food_position = [random.randrange(1, (width // 10)) * 10,
                         random.randrange(1, (height // 10)) * 10]
    food_spawned = 1

    # 添加蛇头
    snake_body.insert(0, list(snake_position))

    # 绘制游戏界面
    screen.fill(black)
    for pos in snake_body:
        pygame.draw.rect(screen, green, Rect(pos[0], pos[1], 10, 10))
    pygame.draw.rect(screen, red, Rect(food_position[0], food_position[1], 10, 10))

    # 判断游戏是否结束
    if snake_position[0] < 0 or snake_position[0] > width - 10:
        game_over()
    if snake_position[1] < 0 or snake_position[1] > height - 10:
        game_over()
    for block in snake_body[1:]:
        if snake_position[0] == block[0] and snake_position[1] == block[1]:
            game_over()

    # 显示分数
    font = pygame.font.SysFont('Arial', 20)
    score_text = font.render('Score: %s' % (score), True, white)
    score_rect = score_text.get_rect()
    score_rect.topleft = (10, 10)
    screen.blit(score_text, score_rect)

    # 更新游戏帧率
    pygame.display.flip()
    fps.tick(15)

这个代码可能有点长，但是实际上并不难理解。它使用 Pygame 库来实现游戏循环、事件处理、界面绘制等功能。在游戏循环中，不断地根据用户输入移动蛇头、判断是否吃到食物、生成食物、添加蛇身、判断游戏是否结束等等。最后，通过 Pygame 的界面绘制功能来实现游戏界面的绘制，以及分数等信息的显示。