python小游戏贪吃蛇代码

以下是一个简单的 Python 贪吃蛇游戏示例代码：

import pygame
import random

# 游戏界面的宽和高
SCREEN_WIDTH = 600
SCREEN_HEIGHT = 600

# 贪吃蛇每个方块的大小
BLOCK_SIZE = 20

# 贪吃蛇的移动速度
SPEED = 5

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

# 初始化 Pygame
pygame.init()

# 创建游戏窗口
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption('贪吃蛇')

# 定义字体
font = pygame.font.SysFont('arial', 36)

# 定义游戏结束的函数
def game_over():
    text = font.render('Game Over', True, RED)
    text_rect = text.get_rect()
    text_rect.center = (SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2)
    screen.blit(text, text_rect)
    pygame.display.update()
    pygame.time.delay(2000)
    pygame.quit()
    quit()

# 定义画贪吃蛇的函数
def draw_snake(snake):
    for block in snake:
        rect = pygame.Rect(block[0], block[1], BLOCK_SIZE, BLOCK_SIZE)
        pygame.draw.rect(screen, GREEN, rect)

# 定义生成食物的函数
def generate_food():
    x = random.randint(0, SCREEN_WIDTH // BLOCK_SIZE - 1) * BLOCK_SIZE
    y = random.randint(0, SCREEN_HEIGHT // BLOCK_SIZE - 1) * BLOCK_SIZE
    return x, y

# 初始化贪吃蛇和食物
snake = [[SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2]]
food = generate_food()

# 定义贪吃蛇的移动方向
direction = 'right'

# 游戏循环
while True:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            quit()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT and direction != 'right':
                direction = 'left'
            elif event.key == pygame.K_RIGHT and direction != 'left':
                direction = 'right'
            elif event.key == pygame.K_UP and direction != 'down':
                direction = 'up'
            elif event.key == pygame.K_DOWN and direction != 'up':
                direction = 'down'

    # 移动贪吃蛇
    if direction == 'left':
        snake.insert(0, [snake[0][0] - BLOCK_SIZE, snake[0][1]])
    elif direction == 'right':
        snake.insert(0, [snake[0][0] + BLOCK_SIZE, snake[0][1]])
    elif direction == 'up':
        snake.insert(0, [snake[0][0], snake[0][1] - BLOCK_SIZE])
    elif direction == 'down':
        snake.insert(0, [snake[0][0], snake[0][1] + BLOCK_SIZE])

    # 判断是否吃到食物
    if snake[0] == list(food):
        food = generate_food()
    else:
        snake.pop()

    # 判断是否撞墙或撞到自己
    if snake[0][0] < 0 or snake[0][0] >= SCREEN_WIDTH or snake[0][1] < 0 or snake[0][1] >= SCREEN_HEIGHT or snake[0] in snake[1:]:
        game_over()

    # 绘制游戏界面
    screen.fill(BLACK)
    draw_snake(snake)
    pygame.draw.rect(screen, RED, pygame.Rect(food[0], food[1], BLOCK_SIZE, BLOCK_SIZE))
    pygame.display.update()

    # 控制游戏帧率
    pygame.time.Clock().tick(SPEED)

运行该代码，即可开始游戏。其中，使用 Pygame 库来实现游戏界面的绘制和事件处理，贪吃蛇的移动和碰撞检测等逻辑由代码来实现。