OcclusionTutorial

using System.Collections.Generic;

using UnityEngine;

using FMODUnity;

public class OcclusionTutorial : MonoBehaviour {

 [Header("FMOD Event")]

 [FMODUnity.EventRef]

 public string SelectAudio;

 FMOD.Studio.EventInstance Audio;

 FMOD.Studio.ParameterInstance VolumeParameter;

 FMOD.Studio.ParameterInstance LPFParameter;

 Transform SlLocation;

  

 [Header("Occlusion Options")]

 [Range(0f, 1f)]

 public float VolumeValue = 0.5f;

 [Range(10f, 22000f)]

 public float LPFCutoff = 10000f;

 public LayerMask OcclusionLayer = 1;

 void Awake ()

 {

  SlLocation = GameObject.FindObjectOfType<StudioListener>().transform;

  Audio = FMODUnity.RuntimeManager.CreateInstance (SelectAudio);

  Audio.getParameter ("Volume", out VolumeParameter);

  Audio.getParameter ("LPF", out LPFParameter);

 }

 void Start () {

  FMOD.Studio.PLAYBACK_STATE PbState;

  Audio.getPlaybackState (out PbState);

  if (PbState != FMOD.Studio.PLAYBACK_STATE.PLAYING) {

   Audio.start ();

  }

 }

 void Update () {

  FMODUnity.RuntimeManager.AttachInstanceToGameObject(Audio, GetComponent<Transform>(), GetComponent<Rigidbody>());

  RaycastHit hit;

  Physics.Linecast(transform.position, SlLocation.position, out hit, OcclusionLayer);

  if (hit.collider.name == "Player") 

  {

   //Debug.Log ("not occluded");

   NotOccluded ();

   Debug.DrawLine (transform.position, SlLocation.position, Color.blue);

  } 

  else 

  {

   //Debug.Log ("occluded");

   Occluded ();

   Debug.DrawLine (transform.position, hit.point, Color.red);

  }

 }

 void Occluded ()

 {

  VolumeParameter.setValue (VolumeValue);

  LPFParameter.setValue (LPFCutoff);

 }

 void NotOccluded ()

 {

  VolumeParameter.setValue (1f);

  LPFParameter.setValue (22000f);

 }

}