main.py

import time
from turtle import Screen
from snake import Snake
from food import Food
from scoreboard import Scoreboard


starting_positions = [(0, 0), (-20, 0), (-40, 0)]
screen = Screen()
screen.setup(600, 600)
screen.bgcolor("black")
screen.title("Snake")
screen.tracer(0)

snake = Snake()
food = Food()
scoreboard = Scoreboard()

screen.listen()
screen.onkey(snake.up, "w")
screen.onkey(snake.down, "s")
screen.onkey(snake.left, "a")
screen.onkey(snake.right, "d")

game_is_on = True
while game_is_on:
    screen.update()
    time.sleep(0.1)
    snake.move()

    # Detect Food Collision
    if snake.head.distance(food) < 20:
        food.refresh()
        snake.extend()
        scoreboard.increase_score()

    # Detect Wall Collision
    if snake.head.xcor() > 300 or snake.head.xcor() < -300 or snake.head.ycor() > 300 or snake.head.ycor() < -300:
        game_is_on = False
        scoreboard.game_over()

    #Detect Tail Collision
    for segment in snake.segments[1:]:
        if snake.head.distance(segment) < 10:
            game_is_on = False
            scoreboard.game_over()


screen.exitonclick()