public override void Update(double elapsed)
{
total_time += (float)elapsed;
for (int i = 0; i < options.Length; i++)
{
options[i].value -= (float)elapsed * 2;
if (options[i].value < default_intensity)
options[i].value = default_intensity;
}
selected_intensity = 0.8f + ((float)Math.Sin(total_time * 4)) * 0.1f;
options[curr_option].value = selected_intensity;
}