Early-python-training/stopLight.py at main · gmartini2019/Early-python-training · GitHub

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import turtle
turtle.setup(400, 600)
window = turtle.Screen()
window.title("STOP LIGHT EXERCISE")
window.bgcolor("pink")
green = turtle.Turtle()
yellow = turtle.Turtle()
red = turtle.Turtle()
def drawLightFrame ():
    green.pensize(3)
    green.color('black', 'white')
    green.begin_fill()
    green.forward(80)
    green.left(90)
    green.forward(200)
    green.circle(40, 180)
    green.forward(200)
    green.left(90)
    green.fillcolor('black')
    green.end_fill()

drawLightFrame()

def circle(t, ht, colr):
    t.penup()
    t.forward(40)
    t.left(90)
    t.forward(ht)
    t.shape('circle')
    t.shapesize(3)
    t.fillcolor(colr)

circle(red,50, 'green')
circle(yellow, 120, 'yellow')
circle(green, 190, 'red')
state = 0

def stateMachineStopLight():
   global state

   if state == 0:
        green.color('darkgrey')
        yellow.color('darkgrey')
        red.color('green')
        window.ontimer(stateMachineStopLight, 3000)
        state = 1
   elif state == 1:
        green.color('darkgrey')
        yellow.color('orange')
        window.ontimer(stateMachineStopLight, 1000)
        state = 2
   elif state == 2:
        red.color('darkgrey')
        window.ontimer(stateMachineStopLight, 1000)
        state = 3
   else:
        green.color('red')
        yellow.color('darkgrey')
        window.ontimer(stateMachineStopLight, 2000)
        state = 0


stateMachineStopLight()

window.listen()

window.mainloop()