pathon贪吃蛇代码

A：

以下是一个简单的Python贪吃蛇代码：

import pygame
import random

# 初始化pygame
pygame.init()

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

# 设置屏幕宽度和高度
WIDTH = 800
HEIGHT = 600

# 创建屏幕
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Snake Game")

# 定义贪吃蛇的初始位置和大小
BLOCK_SIZE = 20
snake_pos = [random.randint(0, WIDTH - BLOCK_SIZE), random.randint(0, HEIGHT - BLOCK_SIZE)]
snake_body = [[snake_pos[0], snake_pos[1]], [snake_pos[0] - BLOCK_SIZE, snake_pos[1]], [snake_pos[0] - (2 * BLOCK_SIZE), snake_pos[1]]]

# 定义食物的初始位置和大小
food_pos = [random.randint(0, WIDTH - BLOCK_SIZE), random.randint(0, HEIGHT - BLOCK_SIZE)]
food_spawned = True

# 定义初始移动方向和速度
direction = "RIGHT"
change_to = direction
snake_speed = 10

# 定义游戏结束函数
def game_over():
    font = pygame.font.SysFont("Arial", 60)
    text = font.render("GameOver!", True, WHITE)

    screen.blit(text, (WIDTH/2 - text.get_width() / 2, HEIGHT/2 - text.get_height() / 2))
    pygame.display.flip()

    pygame.time.delay(3000)

    pygame.quit()
    sys.exit()

# 游戏循环
while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_RIGHT and direction != "LEFT":
                change_to = "RIGHT"
            elif event.key == pygame.K_LEFT and direction != "RIGHT":
                change_to = "LEFT"
            elif event.key == pygame.K_UP and direction != "DOWN":
                change_to = "UP"
            elif event.key == pygame.K_DOWN and direction != "UP":
                change_to = "DOWN"
            elif event.key == pygame.K_ESCAPE:
                pygame.event.post(pygame.event.Event(pygame.QUIT))

    # 判断贪吃蛇是否碰到墙壁或自身
    if snake_pos[0] < 0 or snake_pos[0] > WIDTH - BLOCK_SIZE or snake_pos[1] < 0 or snake_pos[1] > HEIGHT - BLOCK_SIZE:
        game_over()
    for block in snake_body[1:]:
        if snake_pos == block:
            game_over()

    # 判断是否吃到食物，重新生成食物
    if snake_pos == food_pos:
        food_spawned = False
    else:
        snake_body.pop()

    # 如果没有食物，生成新食物
    if not food_spawned:
        food_pos = [random.randrange(0, WIDTH // BLOCK_SIZE) * BLOCK_SIZE,
                    random.randrange(0, HEIGHT // BLOCK_SIZE) * BLOCK_SIZE]
    food_spawned = True

    # 移动贪吃蛇
    if change_to == "RIGHT":
        snake_pos[0] += BLOCK_SIZE
    elif change_to == "LEFT":
        snake_pos[0] -= BLOCK_SIZE
    elif change_to == "UP":
        snake_pos[1] -= BLOCK_SIZE
    elif change_to == "DOWN":
        snake_pos[1] += BLOCK_SIZE
    direction = change_to

    # 增加贪吃蛇长度
    snake_body.insert(0, list(snake_pos))

    # 显示贪吃蛇和食物
    screen.fill(BLACK)
    for pos in snake_body:
        pygame.draw.rect(screen, GREEN, pygame.Rect(pos[0], pos[1], BLOCK_SIZE, BLOCK_SIZE))

    pygame.draw.rect(screen, RED, pygame.Rect(food_pos[0], food_pos[1], BLOCK_SIZE, BLOCK_SIZE))

    pygame.display.update()

    # 控制游戏速度
    snake_speed = len(snake_body) // 5
    fps_controller = pygame.time.Clock()
    fps_controller.tick(snake_speed)