'''lecture_16_copy_bugs.py
Instructions: Find 2 bugs in the below code
Oliver W. Layton
CS 151: Computational Thinking: Visual Media
Spring 2021
'''
import turtle


def make_turtle():
    return turtle.Turtle()


def copy_turtle_1(turt):
    '''Returns a copy of `turt`, which now has all the same properties as `turt`'''
    new_turt = turt.clone()  # BUG 1 fixed
    # new_turt = turtle.Turtle()
    # new_turt = turt # BUG 1: shallow copy, going to return a NEW turtle.
    return new_turt


def copy_turtle_2(turt):
    # turt.clone()  # BUG 2: no return statement
    return turt.clone()  # BUG 2 fix


screen = turtle.Screen()

# Make a classic shape turtle
turt1 = make_turtle()
turt1.shape('classic')

# Make turtle 2 a copy of turtle 1
turt2 = copy_turtle_2(turt1)  # BUG 2: Would return None, assigned to turt2 if we had no return statement
turt2.shape('turtle')

# Make a turtle, copy the turtle shape from turtle 2 to turtle 3
turt3 = copy_turtle_1(turt2)

turt1.goto(-100, -100)
turt2.goto(300, 0)
turt3.goto(200, 200)
# Expected result: turt1 at (-100, -100), turt2 at (300, 0), turt3 at (200, 200)

screen.exitonclick()