public void DisplayGameOver()
    {
        GameOverText.text = "Game Over";

        if (score >= highScore)
        {
            StatSaver.SaveStats(highScore);
        }
    }
    public void UpdateWave()
    {
        wave++;
        WaveText.text = "Wave: " + wave.ToString();

        if (score >= highScore)
        {
            StatSaver.SaveStats(highScore);
        }
    }