def DrawSnake(snake):
    FillRectangle(snake.Head, SNAKE_COLOR)
    if (not (snake.BlockBehindTail == None)):
        FillRectangle(snake.BlockBehindTail, BACKGROUND_COLOR)
def DrawSnake(snake):
    FillRectangle(snake.Head, SNAKE_COLOR)
    if (not (snake.BlockBehindTail == None)):
        FillRectangle(snake.BlockBehindTail, BACKGROUND_COLOR)