调节音量

var myAudio;
myAudio = GetComponent(AudioSource);
private var scrollVol : float = 0.5;
function AudioSwitch ()
{
 if(!myAudio.playOnAwake)
 {
  myAudio.Play();
  myAudio.playOnAwake=true;
 }
 else
 {
  myAudio.Stop();
  myAudio.playOnAwake=false;
 }
}

function OnGUI()
{
 if(myAudio.playOnAwake)
 {
  scrollVol = GUI.HorizontalSlider (Rect (150,175,100,20), scrollVol, 0.0, 1.0);
  myAudio.volume = scrollVol;
 }
}