tkinter模拟反弹球游戏

# -*- coding:utf-8 -*-
"""
-------------------------------------------------
   File Name：     spring_ball.py
   Author :       ZhaiMingyu
   date：          2020/9/20
-------------------------------------------------

"""
from tkinter import *
from tkinter import messagebox
import time
from random import *

class Ball():         #定义Ball类
    def __init__(self,canvas,win_width,win_height,step,racket):
        self.canvas = canvas
        self.racket = racket
        self.notTouchBottom = True      #球没接触到底端初始值为真
        self.id = canvas.create_oval(0,0,20,20,fill='yellow')       #获取球对象
        self.canvas.move(self.id,win_width/2,win_height/2)          #球移动到画布中间
        start_p=[-4,-3,-2,-1,1,2,3,4]                           #球最初x轴位移
        shuffle(start_p)              #打乱x轴位移值
        self.x = start_p[0]           #从上面打乱值中取一个数值当作球每次横向位移值
        self.y = step                 #球每次纵向位移值
        self.win_width = win_width
        self.win_height = win_height
    def ball_move(self):
        self.canvas.move(self.id,self.x,self.y)
        ball_pos = self.canvas.coords(self.id)
        if ball_pos[0] <= 0:              #球出了左边界
            self.x = step
        if ball_pos[1] <= 0 :             #球出了上边界
            self.y = step
        if ball_pos[2] >= self.win_width:      #球出了右边界
            self.x = -step
        if ball_pos[3] >= self.win_height:     #球出了下边界
            self.y = -step
        if self.hit_racket(ball_pos) == True:   #当球被接住时
            self.y = -step
        if ball_pos[3] >=self.win_height:       #当球没被接住时
            self.notTouchBottom = False

            messagebox.showinfo("","You lose!!!\nRestart again!")


    def hit_racket(self,ball_pos):            #判断球是否被接住
        racket_pos = self.canvas.coords(racket.id)
        if ball_pos[2] >= racket_pos[0] and ball_pos[0] <= racket_pos[2] and ball_pos[3] >= racket_pos[1] and ball_pos[3]<= racket_pos[3]:
            return True
        else:
            return False
class Racket():                    #定义Racket类
    def __init__(self,canvas,win_width,win_height):
        self.canvas = canvas
        self.x = 0
        self.canvas.bind_all('<KeyPress-Right>',self.move_right)          #绑定键盘触发右键处理函数
        self.canvas.bind_all('<KeyPress-Left>',self.move_left)            #绑定键盘触发左键处理函数
        self.id = canvas.create_rectangle(0,0,100,15,fill='blue')
        self.canvas.move(self.id,win_width/2-40,win_height-30)
    def move_right(self,event):               #接球拍向右移动每次移动4像素
        self.x = 4
    def move_left(self,event):                #接球拍向左移动每次移动4像素
        self.x = -4
    def racket_move(self):                      #定义接球拍的移动
        self.canvas.move(self.id,self.x,0)
        if self.canvas.coords(self.id)[0] <= 0:    #接球拍左边出界时不移动
            self.x = 0
        if self.canvas.coords(self.id)[2] >=width:   #接球拍右边出界时不移动
            self.x = 0

root = Tk()
width = 300
height = 300
step = 3
speed = 0.03
canvas = Canvas(root, width=width, height=height)
racket = Racket(canvas,width,height)          #接球拍的定义
ball = Ball(canvas,width,height,step,racket)  #球的定义
root.update()
canvas.pack()
while ball.notTouchBottom:   #球没接触底端的情况下
    ball.ball_move()
    racket.racket_move()
    time.sleep(speed)
    root.update()

root.mainloop()