python实现贪吃蛇

好的，以下是一个简单的 Python 贪吃蛇游戏实现代码，希望能帮到你：

import pygame
import random

# 初始化 pygame
pygame.init()

# 游戏窗口大小
win_width = 500
win_height = 500

# 创建游戏窗口
win = pygame.display.set_mode((win_width, win_height))
pygame.display.set_caption("贪吃蛇")

# 定义颜色
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)
green = (0, 255, 0)
blue = (0, 0, 255)

# 蛇的大小
snake_size = 10

# 蛇移动的速度
snake_speed = 15

# 创建蛇类
class Snake:
    def __init__(self, x, y):
        self.x = x
        self.y = y
        self.width = snake_size
        self.height = snake_size
        self.direction = "right"
        self.body = []
        self.length = 1
        
    def draw(self):
        for block in self.body:
            pygame.draw.rect(win, green, (block[0], block[1], self.width, self.height))
        
    def move(self):
        if self.direction == "right":
            self.x += snake_size
        elif self.direction == "left":
            self.x -= snake_size
        elif self.direction == "up":
            self.y -= snake_size
        elif self.direction == "down":
            self.y += snake_size
            
        self.body.insert(0, [self.x, self.y])
        
        if len(self.body) > self.length:
            self.body.pop()
            
    def change_direction(self, direction):
        if direction == "right" and self.direction != "left":
            self.direction = "right"
        elif direction == "left" and self.direction != "right":
            self.direction = "left"
        elif direction == "up" and self.direction != "down":
            self.direction = "up"
        elif direction == "down" and self.direction != "up":
            self.direction = "down"
            
    def check_collision(self):
        if self.x >= win_width or self.x < 0 or self.y >= win_height or self.y < 0:
            return True
        
        for block in self.body[1:]:
            if self.x == block[0] and self.y == block[1]:
                return True
            
        return False
    
    def eat_food(self, food):
        if self.x == food.x and self.y == food.y:
            self.length += 1
            return True
        
        return False

# 创建食物类
class Food:
    def __init__(self):
        self.width = snake_size
        self.height = snake_size
        self.x = random.randrange(0, win_width - self.width, snake_size)
        self.y = random.randrange(0, win_height - self.height, snake_size)
        
    def draw(self):
        pygame.draw.rect(win, red, (self.x, self.y, self.width, self.height))

# 创建游戏循环
def game_loop():
    # 创建蛇和食物
    snake = Snake(win_width//2, win_height//2)
    food = Food()
    
    # 创建游戏计时器
    clock = pygame.time.Clock()
    
    # 游戏结束标志
    game_over = False
    
    while not game_over:
        # 设置游戏速度
        clock.tick(snake_speed)
        
        # 监听事件
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
                
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_RIGHT:
                    snake.change_direction("right")
                elif event.key == pygame.K_LEFT:
                    snake.change_direction("left")
                elif event.key == pygame.K_UP:
                    snake.change_direction("up")
                elif event.key == pygame.K_DOWN:
                    snake.change_direction("down")
                    
        # 移动蛇
        snake.move()
        
        # 检测碰撞
        if snake.check_collision():
            game_over = True
        
        # 绘制蛇和食物
        win.fill(black)
        snake.draw()
        food.draw()
        pygame.display.update()
        
        # 蛇吃到食物
        if snake.eat_food(food):
            food = Food()
            
    # 退出 pygame
    pygame.quit()
    
# 启动游戏
game_loop()

希望这份代码对你有所帮助！