public static void addScore()
    {
        Score += 1;

        KeepScore textChanger = KeepScore.GetInstance();

        textChanger.ChangeText();

        PlaySound(VICTORY_SOUND);
    }
    public static void minusKills()
    {
        Lives -= 1;

        KeepScore textChanger = KeepScore.GetInstance();

        textChanger.ChangeText();

        PlaySound(LOSER_SOUND);
    }