main.py

from turtle import Screen
from food import Food
from scoredboard import Scoreboard
import time

from snake import Snake

screen = Screen()
screen.setup(height=600, width=600)
screen.bgcolor('black')
screen.title('Snake Game')
screen.tracer(0)

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

screen.listen()
screen.onkey(snake.up, 'Up')
screen.onkey(snake.down, 'Down')
screen.onkey(snake.left, 'Left')
screen.onkey(snake.right, 'Right')

game_is_on = True
while game_is_on:
    screen.update()
    time.sleep(.2)
    snake.move()

    # Detect collision with food
    if snake.head.distance(food) < 20:
        score.score_increase()
        snake.extend()
        food.refresh()

    if snake.head.xcor() > 280 or snake.head.xcor() < -280 or snake.head.ycor() > 280 or snake.head.ycor() < -280:
        game_is_on = False
        score.game_over()

    for block in snake.blocks[1:]:
        if snake.head.distance(block) < 10:
            game_is_on = False
            score.game_over()

screen.exitonclick()