from random import randrange as rnd, choice
from tkinter import *

import time
root = Tk()
fr = Frame(root)
root.geometry('800x600')
canv = Canvas(root, bg = 'white')
canv.pack(fill=BOTH,expand=1)
  

def bum(ball):
    if flag_coords[0] <= (ball.x + ball.r) and (ball.x - ball.r) <= flag_coords[2] and flag_coords[1] <= (ball.y + ball.r) and (ball.y - ball.r) <= flag_coords[3]:
        return True
    else:
        return False

class ball():
    def __init__(self,x=40,y=450):
        self.x = x
        self.y = y
        self.r = 10
        self.color = choice(['blue','green','red','brown'])
        self.id = canv.create_oval(self.x-self.r,self.y-self.r,self.x+self.r,self.y+self.r,fill=self.color)
        self.live = 30
        
    def set_coords(self):
        canv.coords(self.id,self.x-self.r,self.y-self.r,self.x+self.r,self.y+self.r)
        
    def move(self):
        if self.y <= 500:
            self.vy -= 1.2
            self.y -= self.vy
            self.x += self.vx
            self.vx *= 0.99
            self.set_coords()
        else:
            if self.vx**2+self.vy**2 > 10:
                self.vy = -self.vy/2
                self.vx = self.vx/2
                self.y = 499
            if self.live < 0:
                balls.pop(balls.index(self))
                canv.delete(self.id)
            else:
                self.live -= 1
        if self.x > 780:
            self.vx = - self.vx/2
            self.x = 779

def fire(event):
    global balls
    global bullet
    bullet += 1
    balls += [ball(canv.coords(gun)[2],canv.coords(gun)[3])]
    balls[-1].vx = (event.x-balls[-1].x)/10
    balls[-1].vy = -(event.y-balls[-1].y)/10

def fire2(event):
    global balls
    global bullet
    bullet += 1
    balls += [ball()]
    balls[-1].r += 20
    balls[-1].vx = (event.x-balls[-1].x)/20
    balls[-1].vy = -(event.y-balls[-1].y)/20

def fire3(event):
    global balls
    global bullet
    for x in range(10):
        bullet += 1
        balls += [ball()]
        balls[-1].r = 5
        balls[-1].vx = (event.x-balls[-1].x)/15 + rnd(5)
        balls[-1].vy = -(event.y-balls[-1].y)/15+(x-10) + rnd(5)

def pointing (event):
    canv.coords(gun,20,450,20+(event.x-20)/10,450-(450-event.y)/10)

def new_game(event=''):
    canv.delete(ALL)
    global gun, flag_coords, bullet, balls
    canv.create_oval(750,450,766,466,fill='orange')
    canv.create_line(758,466,758,480,width=3)
    flag_coords = (745,445,770,485)
    gun = canv.create_line(20,450,50,420,width=7)

    bullet = 0
    balls = []
    
    canv.bind('<Button-1>',fire)
    canv.bind('<Button-3>',fire2)
    canv.bind('<Button-2>',fire3)
    canv.bind('<Motion>',pointing)

    z = 0.03
    work = 1
    while work or balls:
        for b in balls:
            b.move()
            if bum(b) and work:
                work = 0
                canv.bind('<Button-1>','')
                canv.bind('<Button-3>','')
                canv.bind('<Button-2>','')
                canv.create_text(400,300, text = 'Вы уничтожили цель за ' + str(bullet) + 'выстрелов',font = '28')
        canv.update()
        time.sleep(0.03)
    canv.delete(ALL)
    canv.create_text(400,300, text = 'Вы уничтожили цель за ' + str(bullet) + 'выстрелов',font = '28')  
    canv.bind('<Button-1>',new_game)
new_game()    

mainloop()

</pre>
<pre>