#Simulate a bouncing ball
import tkinter as tk
import time

root = tk.Tk()
Frame_Width = 800
Frame_Height = 600
g = print("%dx%d",(Frame_Width, Frame_Height))
root.geometry(g)
canvas = tk.Canvas(root)
canvas. pack()
canvas.config(width = Frame_Width, height = Frame_Height)
root.title("Boing")

SIZE = 50

x1 = Frame_Width / 2
y1 = Frame_Height / 4
velx = 2
vely = 2

while True:
	canvas.delete("all")
	canvas['bg'] = "gray"

	x1 = x1 + velx
	y1 = y1 + vely
	x2 = x1 + SIZE
	y2 = y1 + SIZE

	if (y2 > Frame_Height):
		vely = -vely
	if (x2 > Frame_Width):
		velx = -velx
	if (x1 < 0):
		velx = -velx

	#Create Lines
	for y in range(0,Frame_Height,40):
		canvas.create_rectangle([0,y,Frame_Width,y+1],fill="Magenta",width=0)

	for x in range(0,Frame_Width,40):
		canvas.create_rectangle([x,0,x+1,Frame_Height],fill="Magenta",width=0)

	#Create Circle
	canvas.create_oval([x1,y1,x2,y2],fill="Red",width=0) #width is an optional argument

	vely += 0.2 #0.2 is our acceleration in the y direction

	canvas.update()
	time.sleep(0.01)

root.destroy()