private void HandleMailboxMailCollision(Mail mail, Mailbox mailbox)
        {
            score++;
            levelExp += EXP_TO_LEVEL_UP / (2 * level);
            if (levelExp >= EXP_TO_LEVEL_UP)
            {
                levelExp = 0;
                level++;
            }

            if (mail.Position.X > playerPos.X)
            {
                canThrowRight = true;
            }
            else
            {
                canThrowLeft = true;
            }

            if (mailbox.Position.X > playerPos.X)
            {
                mailbox.CloseMailbox(rightMailboxClosed);
            }
            else
            {
                mailbox.CloseMailbox(leftMailboxClosed);
            }
        }