from graphics import *

def main():
    w = GraphWin("Target",800,600)
    w.setBackground("lightyellow")

    r = 200

    # drawing dart board
    for i in range(10):
        C = Circle(Point(400,300),r-20*i)
        if i%2 == 1: # odd circles will be colored white
            C.setFill("white")
        else: # even circles will be colored white
            C.setFill("red")
        C.draw(w)

    # Creating and drawing the EXIT button
    button = Rectangle(Point(350,540),Point(450,600))
    button.setOutline('green')
    button.setFill('green')
    button.draw(w)

    button_text=Text(Point(400,570),"EXIT")
    button_text.setSize(22)
    button_text.draw(w)

    
    # waiting for mouse clicks and processing them
    while True:
        p = w.getMouse() # getting the mouse click
        x = p.getX() # storing x-coordinate of the mouse click
        y = p.getY() # storing y-coordinate of the mouse click

        # if user clicks on the Exit button
        if 350 <= x <= 450 and 540 <= y <= 600: 
            break

        L = Line(Point(x-20,y+20),p) # create a dart
        L.setArrow("last") # with the arrow at the end
        L.draw(w) # draw it
        

    w.close()

main()