用不同的类去实现一个贪吃蛇游戏的代码

好的，下面是两个不同的类实现贪吃蛇游戏的代码：

第一个类是贪吃蛇类（Snake）：

class Snake:
    def __init__(self, x, y):
        self.x = x
        self.y = y
        self.body = [(x, y), (x-1, y), (x-2, y)]
        self.direction = "right"
        
    def move(self):
        if self.direction == "right":
            self.x += 1
        elif self.direction == "left":
            self.x -= 1
        elif self.direction == "up":
            self.y -= 1
        elif self.direction == "down":
            self.y += 1
        
        self.body.insert(0, (self.x, self.y))
        self.body.pop()
        
    def change_direction(self, direction):
        self.direction = direction
        
    def get_head(self):
        return self.body[0]
    
    def get_body(self):
        return self.body[1:]

第二个类是游戏类（Game）：

import random

class Game:
    def __init__(self, width, height):
        self.width = width
        self.height = height
        self.snake = Snake(width//2, height//2)
        self.food = self.generate_food()
        self.score = 0
        
    def generate_food(self):
        x = random.randint(0, self.width-1)
        y = random.randint(0, self.height-1)
        while (x, y) in self.snake.get_body() or (x, y) == self.snake.get_head():
            x = random.randint(0, self.width-1)
            y = random.randint(0, self.height-1)
        return (x, y)
    
    def update(self):
        self.snake.move()
        if self.snake.get_head() == self.food:
            self.snake.body.append(self.snake.body[-1])
            self.food = self.generate_food()
            self.score += 1
        elif self.snake.get_head()[0] < 0 or self.snake.get_head()[0] >= self.width or \
             self.snake.get_head()[1] < 0 or self.snake.get_head()[1] >= self.height or \
             self.snake.get_head() in self.snake.get_body():
            return False
        return True

以上是两个类实现贪吃蛇游戏的代码。