Python-弹球游戏增强版

from tkinter import *import timeimport randomtk = Tk()tk.title("Game")tk.resizable(0,0)tk.wm_attributes('-topmost',1)canvas = Canvas(tk,width=500,height=400,bd=0,highlightthickness=0)canvas.pack()tk.update()bg = PhotoImage(file="F:\\1、Python\\Python代码\\弹球游戏\\图片\\背景.gif")for x in range(0,5):    for y in range(0,4):        canvas.create_image(x*100,y*100,image=bg,anchor='nw')class Ball:    def __init__(self,canvas,paddle,color):        self.canvas = canvas        self.paddle = paddle        self.id = canvas.create_oval(10,10,25,25,fill=color)        self.canvas.move(self.id,245,100)        self.x = 0        self.y = 0        self.canvas_width = self.canvas.winfo_width()        self.canvas_height = self.canvas.winfo_height()        self.hit_bottom = False        self.num = 0        self.canvas.bind_all('<Button-1>',self.turn_sb)    def turn_sb(self,evt):        start = [-3,-2,-1,1,2,3]        random.shuffle(start)        self.x = start[0]        self.y = 3    def hit(self,pos):        pos_paddle = self.canvas.coords(self.paddle.id)        if pos[3] <= pos_paddle[3] and pos[3] >= pos_paddle[1]:            if pos[2] >= pos_paddle[0] and pos[0] <= pos_paddle[2]:                return True        return False    def draw(self):        self.canvas.move(self.id,self.x,self.y)        pos = self.canvas.coords(self.id)        if pos[0] <= 0:            self.x = 3        if pos[2] >= self.canvas_width:            self.x = -3        if pos[1] <= 0:            self.y = 3        if pos[3] >= self.canvas_height:            self.hit_bottom = True        if self.hit(pos) == True:            self.y = -3            self.num += 1class Paddle:    def __init__(self,canvas,color):        self.canvas = canvas        self.id = canvas.create_rectangle(0,0,100,10,fill=color)        self.canvas.move(self.id,250,330)        self.x = 0        self.canvas_width = self.canvas.winfo_width()        self.canvas.bind_all('<KeyPress-Left>',self.turn_left)        self.canvas.bind_all('<KeyPress-Right>',self.turn_right)    def draw(self):        self.canvas.move(self.id,self.x,0)        pos = self.canvas.coords(self.id)        if pos[0] <= 0:            self.x = 0        if pos[2] >= self.canvas_width:            self.x = 0    def turn_left(self,evt):        self.x = -4    def turn_right(self,evt):        self.x = 4        paddle = Paddle(canvas,'blue')ball = Ball(canvas,paddle,'red')while 1:    if ball.hit_bottom == False:        ball.draw()        paddle.draw()    else:        time.sleep(1)        canvas.create_text(250,150,text="游戏失败，继续努力", \                           font=("Courier",30),fill='yellow')        string = "成功次数 %s "        canvas.create_text(250,180,text= string % ball.num,font=("Courier",20),fill="yellow")        break    tk.update_idletasks()    tk.update()    time.sleep(0.01)