/// <summary>
/// Default handling for session failures. This implementation logs an error and attempts to
/// [reset](xref:UnityEngine.XR.ARSubsystems.XRSessionSubsystem.Reset) the session up to
/// <see cref="maxRetryCount"/> times.
/// </summary>
/// <param name="sessionSubsystem">The <see cref="ARKitSessionSubsystem"/> which provides an interface to the
/// ARKit session.</param>
/// <param name="error">The <see cref="NSError"/> object describing the failure.</param>
protected override void OnSessionDidFailWithError(ARKitSessionSubsystem sessionSubsystem, NSError error)
{
if (retriesRemaining > 0)
{
--retriesRemaining;
Debug.LogWarning($"The session has failed with error code {error.code}: \"{error.localizedDescription}\". Attempting reset ({retriesRemaining} retries remaining).");
sessionSubsystem.Reset();
}
else
{
Debug.LogError($"The session has failed with error code {error.code}: \"{error.localizedDescription}\". Retry limit of {maxRetryCount} has been reached. No further attempts will be made to reset the session unless the configuration changes.");
}
}
/// <summary>
/// Invoked when the
/// [coaching experience](https://developer.apple.com/documentation/arkit/arcoachingoverlayview?language=objc)
/// is completely deactivated. This base class implementation does nothing.
/// </summary>
/// <remarks>
/// See [coachingOverlayViewDidDeactivate:](https://developer.apple.com/documentation/arkit/arcoachingoverlayviewdelegate/3152983-coachingoverlayviewdiddeactivate?language=objc)
/// for more information.
/// </remarks>
/// <param name="sessionSubsystem">The <see cref="ARKitSessionSubsystem"/> which provides an interface to the ARKit session.</param>
/// <seealso cref="ARKitSessionSubsystem.requestedCoachingGoal"/>
/// <seealso cref="ARKitSessionSubsystem.currentCoachingGoal"/>
/// <seealso cref="ARKitSessionSubsystem.SetCoachingActive"/>
/// <seealso cref="OnCoachingOverlayViewWillActivate"/>
protected virtual void OnCoachingOverlayViewDidDeactivate(ARKitSessionSubsystem sessionSubsystem)
{
}
/// <summary>
/// Invoked when a change to the
/// [ARConfiguration](https://developer.apple.com/documentation/arkit/arconfiguration?language=objc)
/// is requested.
/// </summary>
/// <param name="sessionSubsystem">The <see cref="ARKitSessionSubsystem"/> which provides an interface to the ARKit session.</param>
protected virtual void OnConfigurationChanged(ARKitSessionSubsystem sessionSubsystem)
{
}
/// <summary>
/// Invoked when the session fails. This base class implementation does nothing.
/// </summary>
/// <remarks>
/// Use this to respond to session failures. For example, the <see cref="DefaultARKitSessionDelegate"/>
/// implementation tries to restart the session by calling
/// [Reset](xref:UnityEngine.XR.ARSubsystems.XRSessionSubsystem.Reset).
///
/// See [session:didFailWithError:](https://developer.apple.com/documentation/arkit/arsessionobserver/2887453-session?language=objc)
/// for more information.
/// </remarks>
/// <param name="sessionSubsystem">The <see cref="ARKitSessionSubsystem"/> which provides an interface to the ARKit session.</param>
/// <param name="error">The <see cref="NSError"/> object describing the failure. This object is only valid
/// during this callback. See also <see cref="ARKitErrorCode"/>.</param>
protected virtual void OnSessionDidFailWithError(ARKitSessionSubsystem sessionSubsystem, NSError error)
{
}
/// <summary>
/// Resets the <see cref="retriesRemaining"/> to <see cref="maxRetryCount"/>.
/// </summary>
/// <param name="sessionSubsystem">The <see cref="ARKitSessionSubsystem"/> which provides an interface to the
/// ARKit session.</param>
protected override void OnConfigurationChanged(ARKitSessionSubsystem sessionSubsystem)
{
retriesRemaining = maxRetryCount;
}