# move2.py3  using turtle
# import turtle package
import turtle

# function for movement of an object
def moving_object(move):
    # to fill the color in ball
    move.fillcolor('orange')
    # start color filling
    move.begin_fill()
    # draw circle
    move.circle(40) # size
    # end color filling
    move.end_fill()

# end moving_object

# Driver Code
if __name__ == "__main__" :
    # create a screen object
    screen = turtle.Screen()
    # set screen size
    screen.setup(600,600)
    # screen background color
    screen.bgcolor('green')
    # screen updaion
    screen.tracer(0) # other than zero, makes flash
    # create a turtle object object
    move = turtle.Turtle()
    # set a turtle object color
    move.color('orange')
    # set turtle object speed
    move.speed(0)
    # set turtle object width
    move.width(4) # no noticable change
    # hide turtle object
    move.hideturtle()
    # turtle object in air
    move.penup()
    # set initial position
    move.goto(-250, 0) # x,y start  center of screen 0
    # move turtle object to surface
    move.pendown()
    # infinite loop
    count = 0
    while True :  # infinite loop
      # clear turtle work
      move.clear()
      # call function to draw ball
      moving_object(move)
      # update screen
      screen.update()
      # forward motion by turtle object
      move.forward(5.0) # 0.5 very slow
      count = count + 1
      if count > 50:
        move.color('blue')

      # end if
      if count > 100:
        count = 0
        move.color('red')
        move.goto(-250, 0) # x,y start  center of screen 0
	
      # end if
      
    # end while

# end main