Receiving Xcode notification on Reality Composer animation end - swift

Question

I have the following Reality Composer project that loads properly. As you can see, when the animation completes, it should notify with the keyword "attackComplete".
How do I get this notification?
import RealityKit
import ARKit
class ViewController: UIViewController, ARSessionDelegate {
#IBOutlet var arView: ARView!
override func viewDidLoad() {
super.viewDidLoad()
let boxAnchor = try! Experience.loadOrcAttack()
arView.session.delegate = self
arView.scene.anchors.append(boxAnchor)
print("done")
}
func session(_ session: ARSession, didUpdate anchors: [ARAnchor]) {
print(anchors)
}
}

Answer 1

With Reality Composer's notifications you can implement two scenarios:
Action listener
This is your case and it's easy to implement using
public var onAction: ((RealityKit.Entity?) -> Swift.Void)?.
import UIKit
import RealityKit
class ViewController: UIViewController {
#IBOutlet var arView: ARView!
let scene = try! Experience.loadScene()
override func viewDidLoad() {
super.viewDidLoad()
arView.scene.anchors.append(scene)
scene.actions.attackCompleted.onAction = notificationID // listener
}
fileprivate func notificationID(_ entity: Entity?) {
print(scene.actions.attackCompleted.identifier)
}
}
Here is one more example of how .onAction completion handler can be used.
Trigger for action
When you need to notify Reality Composer's scene to play an action use the following scenario:
import UIKit
import RealityKit
class ViewController: UIViewController {
#IBOutlet var arView: ARView!
let scene = try! Experience.loadScene()
override func viewDidLoad() {
super.viewDidLoad()
arView.scene.anchors.append(scene)
}
#IBAction func press(_ sender: UIButton) {
scene.notifications.spinner.post() // trigger for action
}
}
or use a subscript for [NAME.NotificationTrigger]:
#IBAction func press(_ sender: NSButton) {
scene.notifications.allNotifications[0].post()
}
Here's one more example of how .post() instance method can be used.
P. S.
If you need more info, read this post.