A custom script for handling Wwise looping events within Unity. It acts like a component, assign the necessary events and select playback behaviour. Modify the script as needed for your project.

WwisePlayerLoopEvents.cs

using UnityEngine;

public class WwisePlayerLoopEvents : MonoBehaviour
{
#if UNITY_EDITOR
    [SerializeField] bool DebugScript;
#endif

    [Header("Playback Settings")]
    [SerializeField] bool playOnStart;
    [SerializeField] bool akTriggerEnterExit;
    [SerializeField] bool addRigidbody = true;
    [SerializeField] float maxAttenuationDistance = 20.0f; // Manually defined maximum attenuation distance, set it equivalent to the max value of the Wwise attenuation

    [Header("Wwise Events")]
    [SerializeField] AK.Wwise.Event playLoopEvent;
    [SerializeField] AK.Wwise.Event stopLoopEvent;

    [Header("Trigger Object (only one needed if using AkTriggerEnter)")]
    [SerializeField] string triggerObjectTagName = "Player";
    [SerializeField] GameObject triggerGameObject;

    private SphereCollider sphereCollider;
    private Rigidbody AkRigidbody;

    private void Awake()
    {
        InitializeTriggerColliderFromAttenuation();
        SetOrAddRigidbody();
    }

    // Creates and sets sphere collider radius 
    private void InitializeTriggerColliderFromAttenuation()
    {
        if (akTriggerEnterExit)
        {
            sphereCollider = GetComponent<SphereCollider>();

            if (sphereCollider == null)
            {
                Logger.LogWarning($"Sphere collider added during runtime at {gameObject.name}");
                sphereCollider = gameObject.AddComponent<SphereCollider>();
            }

            sphereCollider.isTrigger = true;
            sphereCollider.radius = maxAttenuationDistance;
        }
        else
        {
            sphereCollider = null;
            return;
        }

        Logger.Log($"Sphere collider initialized at {gameObject.name}");
    }

    // Creates and initializes Rigidbody
    private void SetOrAddRigidbody()
    {
        AkRigidbody = GetComponent<Rigidbody>();

        if (AkRigidbody == null)
        {
            if (!addRigidbody)
            {
                AkRigidbody = null;
                return;
            }

            AkRigidbody = gameObject.AddComponent<Rigidbody>(); // Add the Rigidbody component dynamically if it doesn't exist

            Logger.LogWarning($"Rigidbody added during runtime for {gameObject.name}");
        }

        AkRigidbody.useGravity = false;
        AkRigidbody.isKinematic = true;

        if (DebugScript) Logger.Log($"Rigidbody set at {gameObject.name}");
    }

    private void Start()
    {
        if (!playLoopEvent.IsValid())
        {
            if (DebugScript) Logger.LogWarning($"No Wwise Play Loop Event assigned at {gameObject.name}.");
            return;
        }

        if (playOnStart)
        {
            PlayLoopEvent();
            if (DebugScript) Logger.Log($"Playing Wwise event on start at {gameObject.name}");
        }
    }

    private void OnTriggerEnter(Collider other)
    {
        if (akTriggerEnterExit && (other.gameObject.CompareTag(triggerObjectTagName) || other.gameObject == triggerGameObject))
        {
            if (DebugScript) Logger.Log($"Player detected in {gameObject.name} audio trigger area");
            PlayLoopEvent();
        }
    }

    private void OnTriggerExit(Collider other)
    {
        if (akTriggerEnterExit && (other.gameObject.tag == triggerObjectTagName || other.gameObject == triggerGameObject))
        {
            if (DebugScript) Logger.Log($"Player left the {gameObject.name} audio trigger area");
            StopLoopEvent();
        }
    }

    public void PlayLoopEvent()
    {
        if (!playLoopEvent.IsValid())
        {
            return;
        }

        playLoopEvent.Post(gameObject);
        if (DebugScript) Logger.Log($"Wwise Play event posted at {gameObject.name}");
    }

    public void StopLoopEvent()
    {
        if (!playLoopEvent.IsValid())
        {
            return;
        }

        if (!stopLoopEvent.IsValid())
        {
            if (DebugScript) Logger.LogWarning($"No Wwise Stop Loop Event assigned at {gameObject.name}, stopping Play Loop Event directly");

            playLoopEvent.Stop(gameObject);
        }
        else
        {
            if (DebugScript) Logger.Log($"Wwise Stop event posted at {gameObject.name}");

            stopLoopEvent.Post(gameObject);
        }
    }

    // Call method to stop looping forever if a condition is met in-game
    public void DestroySphereColliderAndStopEvent()
    {
        StopLoopEvent();
        Destroy(sphereCollider);
        if (DebugScript) Logger.Log($"Destroyed sphere collider and stopped event at {gameObject.name}");
        Destroy(this);
    }
}


#region UnityDebugLogScript

//using UnityEngine;

//public class WwiseLoopEvents : MonoBehaviour
//{

//#if UNITY_EDITOR
//    [SerializeField] bool DebugScript;
//#endif

//    [Header("Playback Settings")]
//    [SerializeField] bool playOnStart;
//    [SerializeField] bool akTriggerEnterExit;
//    [SerializeField] bool addRigidbody = true;
//    [SerializeField] float maxAttenuationDistance = 20.0f; // Manually defined maximum attenuation distance, set it equivalent to the max value of the Wwise attenuation

//    [Header("Wwise Events")]
//    [SerializeField] AK.Wwise.Event playLoopEvent;
//    [SerializeField] AK.Wwise.Event stopLoopEvent;

//    [Header("Trigger Object (only one needed if using AkTriggerEnter)")]
//    [SerializeField] string triggerObjectTagName = "Player";
//    [SerializeField] GameObject triggerGameObject;

//    private SphereCollider sphereCollider;
//    private Rigidbody AkRigidbody;

//    private void Awake()
//    {
//        InitializeTriggerColliderFromAttenuation();
//        SetOrAddRigidbody();
//    }

//    // Creates and sets sphere collider radius 
//    private void InitializeTriggerColliderFromAttenuation()
//    {
//        if (akTriggerEnterExit)
//        {
//            sphereCollider = GetComponent<SphereCollider>();

//            if (sphereCollider == null)
//            {
//#if UNITY_EDITOR
//                DebugMessage($"Sphere collider added during runtime at {gameObject.name}", 1);
//#endif

//                sphereCollider = gameObject.AddComponent<SphereCollider>();
//            }

//            sphereCollider.isTrigger = true;
//            sphereCollider.radius = maxAttenuationDistance;
//        }
//        else
//        {
//            sphereCollider = null;
//            return;
//        }
//#if UNITY_EDITOR
//            DebugMessage($"Sphere collider initialized at {gameObject.name}", 0);
//#endif
//    }

//    // Creates and initializes Rigidbody
//    private void SetOrAddRigidbody()
//    {
//        AkRigidbody = GetComponent<Rigidbody>();

//        if (AkRigidbody == null)
//        {
//            if (!addRigidbody)
//            {
//                AkRigidbody = null;
//                return;
//            }

//            AkRigidbody = gameObject.AddComponent<Rigidbody>(); // Add the Rigidbody component dynamically if it doesn't exist

//#if UNITY_EDITOR
//            DebugMessage($"Rigidbody added during runtime for {gameObject.name}", 1);
//#endif
//        }

//        AkRigidbody.useGravity = false;
//        AkRigidbody.isKinematic = true;

//#if UNITY_EDITOR
//            DebugMessage($"Rigidbody set at {gameObject.name}", 0);
//#endif
//    }

//    private void Start()
//    {
//        if (!playLoopEvent.IsValid())
//        {
//            DebugMessage($"No Wwise Play Loop Event assigned at {gameObject.name}.", 2);
//            return;
//        }

//        if (playOnStart)
//        {
//            PlayLoopEvent();

//#if UNITY_EDITOR
//                DebugMessage($"Playing Wwise event on start at {gameObject.name}", 0);
//#endif
//        }

//    }

//    private void OnTriggerEnter(Collider other)
//    {
//        if (akTriggerEnterExit && (other.gameObject.CompareTag(triggerObjectTagName) || other.gameObject == triggerGameObject))
//        {

//#if UNITY_EDITOR
//                DebugMessage($"Player detected in {gameObject.name} audio trigger area", 0);
//#endif

//            PlayLoopEvent();
//        }

//    }

//    private void OnTriggerExit(Collider other)
//    {
//        if (akTriggerEnterExit && (other.gameObject.tag == triggerObjectTagName || other.gameObject == triggerGameObject))
//        {

//#if UNITY_EDITOR
//                DebugMessage($"Player left the {gameObject.name} audio trigger area", 0);
//#endif

//            StopLoopEvent();
//        }

//    }

//    public void PlayLoopEvent()
//    {
//        if (!playLoopEvent.IsValid())
//        {
//            return;
//        }

//        playLoopEvent.Post(gameObject);

//#if UNITY_EDITOR
//            DebugMessage($"Wwise Play event posted at {gameObject.name}", 0);
//#endif

//    }

//    public void StopLoopEvent()
//    {
//        if (!playLoopEvent.IsValid())
//        {
//            return;
//        }

//        if (!stopLoopEvent.IsValid())
//        {

//#if UNITY_EDITOR
//                DebugMessage($"No Wwise Stop Loop Event assigned at {gameObject.name}, stopping Play Loop Event directly", 1);
//#endif

//            playLoopEvent.Stop(gameObject);
//        }
//        else
//        {
//            stopLoopEvent.Post(gameObject);

//#if UNITY_EDITOR
//                DebugMessage($"Wwise Stop event posted at {gameObject.name}", 0);
//#endif
//        }

//    }

//    // Call method to stop looping forever if a condition is met in-game
//    public void DestroySphereColliderAndStopEvent()
//    {
//        StopLoopEvent();
//        Destroy(sphereCollider);

//#if UNITY_EDITOR
//        DebugMessage($"Destroyed sphere collider and stopped event at {gameObject.name}", 0);
//#endif

//        Destroy(this);
//    }

//#if UNITY_EDITOR
//    /// <summary>
//    /// Allows easy customization of the different types of debug messages 
//    /// </summary>
//    /// <param name="debugMessage"> Pass in string </param>
//    /// <param name="warningType"> Assign 0 for log, 1 for warning, 2 for error </param> 
//    private void DebugMessage(string debugMessage, byte warningType)
//    {
//        if (!DebugScript)
//            return;


//            switch (warningType)
//            {
//                case 0:
//                    Debug.Log(debugMessage);
//                    return;
//                case 1:
//                    Debug.LogWarning(debugMessage);
//                    return;
//                case 2:
//                    Debug.LogError(debugMessage);
//                    return;
//                default:
//                    return;
//            }
//    }

//#endif

//}

#endregion