snake_crazy

import turtle
import random

class App:
    pass

def go_up():
    if app.direction !="down":
        app.direction = "up"

def go_down():
    if app.direction !="up":
        app.direction = "down"

def go_left():
    if app.direction !="right":
        app.direction = "left"

def go_right():
    if app.direction !="left":
        app.direction = "right"

def start_game():
    # Don't start again if already started
    if app.started:
        return

    else:
        app.started = True
        app.alive = True
        app.direction = "stop"
        new_food()
        app.score = 0
        update_score()
        new_snake()
        app.banner.clear()
        app.press_x.clear()
        wn.ontimer(move, app.frequency)

def update_score():
    app.scoreboard.clear()
    app.scoreboard.write(f"Score: {app.score}\nPress z to turn crazy mode on/off", align="center", font="Consolas")

def end_game():
    app.alive = False
    print('End game')
    app.started = False
    you_died()

def check_hit_food():
    if app.segments[0].distance(app.food) < 20:
        new_food()
        app.score += 1
        update_score()
        add_segment()

def replace_head():
    app.segments.insert(0, app.segments.pop())

def move():

    if app.direction == "up":
        x = app.segments[0].xcor()
        y = app.segments[0].ycor()
        if y >= 335:
            end_game()
        else:
            if not app.crazy_mode:
                app.segments[-1].setx(x)

            app.segments[-1].sety(y + app.pixel_jump)
            replace_head()
            check_hit_food()

    if app.direction == "down":
        x = app.segments[0].xcor()
        y = app.segments[0].ycor()
        if y <= -325:
            end_game()
        else:
            if not app.crazy_mode:
                app.segments[-1].setx(x)
            app.segments[-1].sety(y - app.pixel_jump)
            replace_head()
            check_hit_food()

    if app.direction == "left":
        x = app.segments[0].xcor()
        y = app.segments[0].ycor()
        if x <= -335:
            end_game()
        else:
            app.segments[-1].setx(x - app.pixel_jump)
            if not app.crazy_mode:
                app.segments[-1].sety(y)
            replace_head()
            check_hit_food()

    if app.direction == "right":
        x = app.segments[0].xcor()
        y = app.segments[0].ycor()
        if x >= 325:
            end_game()
        else:
            app.segments[-1].setx(x + app.pixel_jump)
            if not app.crazy_mode:
                app.segments[-1].sety(y)
            replace_head()
            check_hit_food()

    if app.alive:
        wn.ontimer(move, app.frequency)

def new_food():

    if app.food:

        app.food.hideturtle()
        app.food = None

    app.food = turtle.Turtle()

    x = random.randint(-330, 330)
    y = random.randint(-330, 330)
    wn.tracer(0, 0)
    app.food.speed("fastest")
    app.food.hideturtle()
    app.food.penup()
    app.food.setposition(x, y)
    app.food.pendown()
    app.food.showturtle()
    wn.update()
    wn.tracer(1, 0)

    app.food.shape("square")
    app.food.color("black")
    app.food.penup()

def you_died():
    app.banner.speed(0)
    app.banner.shape("square")
    app.banner.color("white")
    app.banner.penup()
    app.banner.hideturtle()
    app.banner.goto(0, 0)
    app.banner.write("You Died!\nPress 'x' to restart.", align="center", font=("Consolas", 50, "normal"))

app = App()
app.crazy_mode = False
app.segments = []
app.score = 0
app.highscore = 0
app.time = 0
app.started = False
app.alive = True
app.frequency = 50   # milliseconds
app.pixel_jump = 10   # pixels
app.food = None

app.banner = turtle.Turtle()
app.banner.hideturtle()

wn = turtle.Screen()
wn.colormode(255)
wn.title("Snake game")
wn.bgcolor("#782E2E")
wn.setup(height=700, width=700)

def toggle_crazy_mode():
    app.crazy_mode = not app.crazy_mode

def new_snake():

    while app.segments:
        segment = app.segments[0]

        segment.clear()
        segment.hideturtle()

        del app.segments[0]

    app.segments = []

    head = turtle.Turtle()
    head.speed(0)
    head.shape("square")
    head.color("#22B14A")
    head.penup()
    head.goto(0,0)

    app.segments = [head]

app.direction = "stop"

def create_scoreboard():
    app.scoreboard = turtle.Turtle()
    app.scoreboard.speed(0)
    app.scoreboard.shape("square")
    app.scoreboard.color("white")
    app.scoreboard.penup()
    app.scoreboard.hideturtle()
    app.scoreboard.goto(0,260)
    update_score()

def create_start_game_banner():
    app.press_x = turtle.Turtle()
    app.press_x.hideturtle()
    app.press_x.speed(0)
    app.press_x.shape("square")
    app.press_x.color("white")
    app.press_x.penup()
    app.press_x.hideturtle()
    app.press_x.goto(0, 0)
    app.press_x.write("Press 'x' to start.", align="center", font=("Consolas", 50, "normal"))

wn.listen()

wn.onkeypress(go_up, "w")
wn.onkeypress(go_down, "s")
wn.onkeypress(go_left, "a")
wn.onkeypress(go_right, "d")

wn.onkeypress(go_up, "Up")
wn.onkeypress(go_down, "Down")
wn.onkeypress(go_left, "Left")
wn.onkeypress(go_right, "Right")

wn.onkeypress(start_game, "x")
wn.onkeypress(toggle_crazy_mode, "z")

create_scoreboard()
create_start_game_banner()

def add_segment():

    new_segment = turtle.Turtle()
    new_segment.speed(0)
    new_segment.shape("square")
    new_segment.color("#22B14A")
    new_segment.penup()
    app.segments.append(new_segment)

    if app.direction == 'up':
        x = app.segments[-2].xcor()
        y = app.segments[-2].ycor() - 20
        new_segment.goto(x, y)
    elif app.direction == 'down':
        x = app.segments[-2].xcor()
        y = app.segments[-2].ycor() + 20
        new_segment.goto(x, y)
    elif app.direction == 'left':
        x = app.segments[-2].xcor() + 20
        y = app.segments[-2].ycor()
        new_segment.goto(x, y)
    elif app.direction == 'right':
        x = app.segments[-2].xcor() - 20
        y = app.segments[-2].ycor()
        new_segment.goto(x, y)

wn.mainloop()
turtle.done()