贪吃蛇py按照snake文档的要求，根据所提供的snake.py代码框架，实现功能。最后合并为完整的代码代码

根据提供的 `Snake.docx` 文档，以下是实现贪吃蛇游戏的完整代码。该代码遵循文档中的要求，实现了屏幕设置、颜色配置、PyGame初始化、游戏循环、蛇的移动、食物生成及检测、游戏结束条件以及文本显示等功能。

import pygame
import random

class GameClass:
    def __init__(self):
        # Grid size
        self.Width = 20
        self.Height = 20
        self.Scale = 30
        
        # Colours
        self.BackgroundColour = (40, 40, 60)
        self.TextColour = (255, 150, 0)
        self.FoodColour = (255, 100, 100)
        self.SnakeColour = (255, 255, 255)
        
        # Other
        self.FoodPosition = None
        self.GameSpeed = 15
        self.Score = 0
        self.Direction = "Right"
        self.GameStarted = False
        
        # Initialise pygame
        pygame.init()
        self.Display = pygame.display.set_mode((self.Width * self.Scale, self.Height * self.Scale))
        self.Clock = pygame.time.Clock()
        pygame.display.set_caption('Snake')
        
        # Create a snake instance
        self.Snake = Snake(self.Width // 2, self.Height // 2)

    def Play(self):
        GameOver = False
        while not GameOver:
            self.DisplayFrame()
            
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    GameOver = True
                if event.type == pygame.KEYDOWN:
                    if not self.GameStarted and event.key in [pygame.K_LEFT, pygame.K_RIGHT, pygame.K_UP, pygame.K_DOWN]:
                        self.GameStarted = True
                    if event.key == pygame.K_LEFT and self.Direction != "Right":
                        self.Direction = "Left"
                    elif event.key == pygame.K_RIGHT and self.Direction != "Left":
                        self.Direction = "Right"
                    elif event.key == pygame.K_UP and self.Direction != "Down":
                        self.Direction = "Up"
                    elif event.key == pygame.K_DOWN and self.Direction != "Up":
                        self.Direction = "Down"
            
            if self.GameStarted:
                self.Snake.Move(self.Direction)
                if self.Snake.EatenFood(self.FoodPosition):
                    self.Score += 1
                    self.Snake.Grow()
                    self.NewFood()
                
                if self.Snake.OffScreen(self.Width, self.Height) or self.Snake.EatenSelf():
                    self.GameOver()

            pygame.display.update()
            self.Clock.tick(self.GameSpeed)

    def DisplayFrame(self):
        self.Display.fill(self.BackgroundColour)
        self.ColourCell(self.Snake.Head, self.SnakeColour)
        for cell in self.Snake.Body:
            self.ColourCell(cell, self.SnakeColour)
        if self.FoodPosition:
            self.ColourCell(self.FoodPosition, self.FoodColour)
        self.DisplayText(f"Score: {self.Score}", (1, 1))
    
    def ColourCell(self, Position, Colour):
        X, Y = Position
        X *= self.Scale
        Y *= self.Scale
        pygame.draw.rect(self.Display, Colour, [X, Y, self.Scale, self.Scale])
    
    def DisplayText(self, text, position):
        font = pygame.font.Font(None, 36)
        text_surface = font.render(text, True, self.TextColour)
        self.Display.blit(text_surface, (position[0] * self.Scale, position[1] * self.Scale))
    
    def NewFood(self):
        x = random.randint(0, self.Width - 1)
        y = random.randint(0, self.Height - 1)
        self.FoodPosition = (x, y)
    
    def GameOver(self):
        self.DisplayFrame()
        self.DisplayText("Game Over!", (self.Width // 4, self.Height // 2))
        self.DisplayText(f"Final Score: {self.Score}", (self.Width // 4, self.Height // 2 + 2))
        self.DisplayText("Press any key to restart", (self.Width // 4, self.Height // 2 + 4))
        pygame.display.update()
        
        waiting = True
        while waiting:
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    pygame.quit()
                    quit()
                if event.type == pygame.KEYDOWN:
                    new_game = GameClass()
                    new_game.Play()
                    waiting = False

class Snake:
    def __init__(self, start_x, start_y):
        self.Head = [start_x, start_y]
        self.Body = [[start_x, start_y]]
        self.PreviousCell = None
    
    def Move(self, Direction):
        Head = self.Head.copy()
        if Direction == "Left":
            Head[0] -= 1
        elif Direction == "Right":
            Head[0] += 1
        elif Direction == "Up":
            Head[1] -= 1
        elif Direction == "Down":
            Head[1] += 1
        self.PreviousCell = self.Body[-1].copy()
        self.Body.insert(0, Head)
        self.Head = Head
        self.Body.pop()
    
    def Grow(self):
        self.Body.append(self.PreviousCell)
    
    def EatenFood(self, FoodPosition):
        return self.Head == FoodPosition
    
    def OffScreen(self, Width, Height):
        return self.Head[0] < 0 or self.Head[0] >= Width or self.Head[1] < 0 or self.Head[1] >= Height
    
    def EatenSelf(self):
        return self.Head in self.Body[1:]

if __name__ == "__main__":
    game = GameClass()
    game.Play()

### 说明
1. **初始化**：设置了屏幕大小、颜色等基本参数，并初始化PyGame。
2. **游戏循环**：处理事件、更新蛇的状态、检查碰撞和食物的生成。
3. **显示帧**：绘制背景、蛇、食物和文本。
4. **蛇类**：实现了蛇的移动、生长、检测食物和自身碰撞等功能。
5. **游戏结束**：显示最终分数并等待玩家重启游戏。

希望这段代码能满足你的需求。如果有任何问题或需要进一步的帮助，请随时告诉我。