import pygame
import random# 游戏窗口大小
width = 640
height = 480# 定义贪吃蛇类
class Snake:def __init__(self):self.length = 1self.positions = [((width // 2), (height // 2))]self.direction = random.choice([up, down, left, right])self.color = (0, 255, 0) # 绿色def get_head_position(self):return self.positions[0]def move(self):cur = self.get_head_position()x, y = self.directionnew = (((cur[0] + (x*gridsize)) % width), (cur[1] + (y*gridsize)) % height)if len(self.positions) > 2 and new in self.positions[2:]:self.reset()else:self.positions.insert(0, new)if len(self.positions) > self.length:self.positions.pop()def reset(self):self.length = 1self.positions = [((width // 2), (height // 2))]self.direction = random.choice([up, down, left, right])def draw(self, surface):for p in self.positions:pygame.draw.rect(surface, self.color, (p[0], p[1], gridsize, gridsize))# 定义食物类
class Food:def __init__(self):self.position = (0, 0)self.color = (255, 0, 0) # 红色self.randomize_position()def randomize_position(self):self.position = (random.randint(0, width//gridsize-1)*gridsize,random.randint(0, height//gridsize-1)*gridsize)def draw(self, surface):pygame.draw.rect(surface, self.color, (self.position[0], self.position[1], gridsize, gridsize))# 游戏初始化
pygame.init()
window = pygame.display.set_mode((width, height))
pygame.display.set_caption('贪吃蛇游戏')clock = pygame.time.Clock()
snake = Snake()
food = Food()# 定义方向
up = (0, -1)
down = (0, 1)
left = (-1, 0)
right = (1, 0)# 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_UP and snake.direction != down:snake.direction = upelif event.key == pygame.K_DOWN and snake.direction != up:snake.direction = downelif event.key == pygame.K_LEFT and snake.direction != right:snake.direction = leftelif event.key == pygame.K_RIGHT and snake.direction != left:snake.direction = rightsnake.move()if snake.get_head_position() == food.position:snake.length += 1food.randomize_position()window.fill((0, 0, 0)) # 清空窗口snake.draw(window)food.draw(window)pygame.display.update()clock.tick(10) # 控制帧率
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