### Python 贪吃蛇代码及运行结果截图 以下是一个完整的 Python 贪吃蛇游戏代码，基于 `pygame` 库实现。如果尚未安装 `pygame`，可以通过命令 `pip install pygame` 安装[^5]。 ```python import pygame import random import sys # 初始化 Pygame pygame.init() # 设置窗口大小和标题 WIDTH, HEIGHT = 400, 400 BLOCK_SIZE = 20 screen = pygame.display.set_mode((WIDTH, HEIGHT)) pygame.display.set_caption("贪吃蛇游戏") # 定义颜色 WHITE = (255, 255, 255) BLACK = (0, 0, 0) RED = (255, 0, 0) GREEN = (0, 255, 0) # 定义时钟 clock = pygame.time.Clock() # 定义字体 font = pygame.font.SysFont(None, 36) # 定义蛇类 class Snake: def __init__(self): self.body = [(5, 5), (4, 5), (3, 5)] self.direction = "RIGHT" def move(self): head_x, head_y = self.body[0] if self.direction == "UP": new_head = (head_x, head_y - 1) elif self.direction == "DOWN": new_head = (head_x, head_y + 1) elif self.direction == "LEFT": new_head = (head_x - 1, head_y) elif self.direction == "RIGHT": new_head = (head_x + 1, head_y) self.body.insert(0, new_head) self.body.pop() def grow(self): self.body.append(self.body[-1]) def check_collision(self): head_x, head_y = self.body[0] if head_x < 0 or head_x >= WIDTH // BLOCK_SIZE or head_y < 0 or head_y >= HEIGHT // BLOCK_SIZE: return True for segment in self.body[1:]: if segment == self.body[0]: return True return False # 定义食物类 class Food: def __init__(self): self.position = (random.randint(0, WIDTH // BLOCK_SIZE - 1), random.randint(0, HEIGHT // BLOCK_SIZE - 1)) def respawn(self): self.position = (random.randint(0, WIDTH // BLOCK_SIZE - 1), random.randint(0, HEIGHT // BLOCK_SIZE - 1)) # 初始化蛇和食物 snake = Snake() food = Food() # 游戏主循环 while True: screen.fill(BLACK) for event in pygame.event.get(): if event.type == pygame.QUIT: pygame.quit() sys.exit() if event.type == pygame.KEYDOWN: if event.key == pygame.K_UP and snake.direction != "DOWN": snake.direction = "UP" elif event.key == pygame.K_DOWN and snake.direction != "UP": snake.direction = "DOWN" elif event.key == pygame.K_LEFT and snake.direction != "RIGHT": snake.direction = "LEFT" elif event.key == pygame.K_RIGHT and snake.direction != "LEFT": snake.direction = "RIGHT" # 移动蛇 snake.move() # 检查是否吃到食物 if snake.body[0] == food.position: snake.grow() food.respawn() # 检查碰撞 if snake.check_collision(): pygame.quit() sys.exit() # 绘制蛇 for segment in snake.body: x, y = segment pygame.draw.rect(screen, GREEN, (x * BLOCK_SIZE, y * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE)) # 绘制食物 pygame.draw.rect(screen, RED, (food.position[0] * BLOCK_SIZE, food.position[1] * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE)) # 更新屏幕 pygame.display.flip() # 控制帧率 clock.tick(10) ``` #### 运行结果截图 由于无法直接展示截图，请在本地运行上述代码后截取运行界面作为结果。以下是运行效果的描述： - 界面为一个 400x400 的黑色窗口。 - 蛇初始长度为 3 块，颜色为绿色。 - 食物为红色方块，随机生成在界面上。 - 使用方向键控制蛇的移动。 - 当蛇撞墙或撞到自身时，游戏结束并关闭窗口[^6]。 ### 注意事项 - 确保已正确安装 `pygame` 库。 - 如果需要调整速度，可以修改 `clock.tick(10)` 中的数字，数值越大速度越快。