# Importing from turtle import Screen, Turtle saves time and make code look cleaner!
from turtle import Screen, Turtle
from random import randint

DELAY = 100 # Milliseconds


def up():
    global direction
    direction = 'up'
    turtle.setheading(90)

def down():
    global direction
    direction = 'down'
    turtle.setheading(270)

def left():
    global direction
    direction = 'left'
    turtle.setheading(180)

def right():
    global direction
    direction = 'right'
    turtle.setheading(0)

def move():
    global direction

    x, y = old_position = turtle.position()

    if direction == 'up':
        turtle.sety(y + 20)
    elif direction == 'down':
        turtle.sety(y - 20)
    elif direction == 'left':
        turtle.setx(x - 20)
    elif direction == 'right':
        turtle.setx(x + 20)

    # Basically saying if the direction of turtle is up
    # Then y is equal to our y coordinates which is up
    # Saying the direction of our turtle that ycor is going up 20 pixles


    if direction != 'stop':

        if sections:
            if any(turtle.distance(section) < 20 for section in sections):# Check for collison with the body sections
                turtle.goto(0, 0)#Return to middle of screen once it colldies with it's self
                direction = 'stop'
                # Hide the sections
                for section in sections:
                    section.hideturtle()# Once it body colldies with it's self body parts will hide then clear
                # Clear the section list
                sections.clear()#will clear our list of body parts
            else:
                last_position = sections[-1].position()
                # Move the sections in Reverse order
                if len(sections) > 1:
                    for index in range(len(sections) - 1, 0, -1):
                        sections[index].goto(sections[index - 1].position())

                sections[0].goto(old_position)

                old_position = last_position

        if not (-390 < turtle.xcor() < 390 and -390 < turtle.ycor() < 390):
            turtle.goto(0, 0)# Basically saying if i turn left while going right it make me restart from the middle of the screen or if i do it the other way around
            direction = 'stop'

            for section in sections:
                section.hideturtle()

            sections.clear()


        if turtle.distance(food) < 20:
            food.goto(randint(-280, 280), randint(-280, 280))
            # Adding sections
            new_section = Turtle()# Turtle() is the same as turtle.Turtle()
            new_section.shape('square')
            new_section.speed(0)
            new_section.color('orange', 'grey')
            new_section.penup()
            new_section.goto(old_position)
            sections.append(new_section)# Adds new section of body at the end of body

            # Score
            score = 0
            high_score = 0

            # Increase the score
            score =+ 10

            if score > high_score:
                high_score = score
            pen.clear()
            pen.write("Score: {} High Score: {}".format(score, high_score), align="center", font=("Courier", 24, "normal"))

    screen.update()
    screen.ontimer(move, DELAY)
# Screen set up
screen = Screen()
screen.title("Snakebite mini Game by Rafa94")
screen.bgcolor('brown')
screen.setup(width=800, height=700)
screen.tracer(0)

# Player
turtle = Turtle()
turtle.shape('turtle')
turtle.speed(0)
turtle.color('orange', 'grey')
turtle.penup()

# Snake food
food = Turtle()
food.shape('circle')
food.speed(0)
food.color('red', 'yellow')
food.penup()
food.goto(randint(-280, 280), randint(-280, 280))
#
sections = []

# Pen/ Score board
pen = Turtle()
pen.speed()
pen.shape("square")
pen.color("white")
pen.penup()
pen.hideturtle()
pen.goto(0, 260)
pen.write("Score: 0 High Score: 0", align="center", font=("Courier", 24, "normal"))


direction = 'stop'
# Keyboard bindings
screen.onkey(up, 'Up')
screen.onkey(down, 'Down')
screen.onkey(left, 'Left')
screen.onkey(right, 'Right')
screen.listen()

# main game loop
move()

screen.mainloop()