以下是一个结合上述引用信息编写的简单 Python 贪吃蛇小游戏源码，使用了`pygame`库： ```python import pygame import random # 定义屏幕大小、蛇的初始长度、蛇头坐标、食物坐标等 SCREEN_WIDTH = 600 SCREEN_HEIGHT = 480 CELL_SIZE = 20 assert SCREEN_WIDTH % CELL_SIZE == 0, "屏幕宽不能被格子大小整除" assert SCREEN_HEIGHT % CELL_SIZE == 0, "屏幕高不能被格子大小整除" CELL_WIDTH = int(SCREEN_WIDTH / CELL_SIZE) CELL_HEIGHT = int(SCREEN_HEIGHT / CELL_SIZE) # 定义颜色常量 WHITE = (255, 255, 255) BLACK = (0, 0, 0) RED = (255, 0, 0) GREEN = (0, 255, 0) DARK_GREEN = (0, 155, 0) DARK_GRAY = (40, 40, 40) # 初始化 Pygame pygame.init() screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT)) pygame.display.set_caption('贪吃蛇小游戏') clock = pygame.time.Clock() # 定义蛇的初始状态 HEAD = 0 snake_coords = [{'x': 5, 'y': 5}] direction = 'right' # 生成食物 def get_random_food(): return {'x': random.randint(0, CELL_WIDTH - 1), 'y': random.randint(0, CELL_HEIGHT - 1)} food = get_random_food() # 判断蛇死了没 def snake_is_alive(snake_coords): tag = True if snake_coords[HEAD]['x'] == -1 or snake_coords[HEAD]['x'] == CELL_WIDTH or snake_coords[HEAD]['y'] == -1 or \ snake_coords[HEAD]['y'] == CELL_HEIGHT: tag = False # 蛇碰壁啦 for snake_body in snake_coords[1:]: if snake_body['x'] == snake_coords[HEAD]['x'] and snake_body['y'] == snake_coords[HEAD]['y']: tag = False # 蛇碰到自己身体啦 return tag # 主游戏循环 while True: 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 or event.key == pygame.K_a) and direction != 'right': direction = 'left' elif (event.key == pygame.K_RIGHT or event.key == pygame.K_d) and direction != 'left': direction = 'right' elif (event.key == pygame.K_UP or event.key == pygame.K_w) and direction != 'down': direction = 'up' elif (event.key == pygame.K_DOWN or event.key == pygame.K_s) and direction != 'up': direction = 'down' # 移动蛇 if direction == 'up': new_head = {'x': snake_coords[HEAD]['x'], 'y': snake_coords[HEAD]['y'] - 1} elif direction == 'down': new_head = {'x': snake_coords[HEAD]['x'], 'y': snake_coords[HEAD]['y'] + 1} elif direction == 'left': new_head = {'x': snake_coords[HEAD]['x'] - 1, 'y': snake_coords[HEAD]['y']} elif direction == 'right': new_head = {'x': snake_coords[HEAD]['x'] + 1, 'y': snake_coords[HEAD]['y']} snake_coords.insert(0, new_head) # 判断是否吃到食物 if snake_coords[HEAD]['x'] == food['x'] and snake_coords[HEAD]['y'] == food['y']: food = get_random_food() else: del snake_coords[-1] # 判断蛇是否存活 if not snake_is_alive(snake_coords): pygame.quit() quit() # 绘制背景 screen.fill(BLACK) # 绘制蛇 for coord in snake_coords: x = coord['x'] * CELL_SIZE y = coord['y'] * CELL_SIZE snake_segment_rect = pygame.Rect(x, y, CELL_SIZE, CELL_SIZE) pygame.draw.rect(screen, DARK_GREEN, snake_segment_rect) snake_inner_segment_rect = pygame.Rect(x + 4, y + 4, CELL_SIZE - 8, CELL_SIZE - 8) pygame.draw.rect(screen, GREEN, snake_inner_segment_rect) # 绘制食物 food_rect = pygame.Rect(food['x'] * CELL_SIZE, food['y'] * CELL_SIZE, CELL_SIZE, CELL_SIZE) pygame.draw.rect(screen, RED, food_rect) # 更新显示 pygame.display.update() clock.tick(5) ```