Receiving Xcode notification on Reality Composer animation end

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)
    }
}

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()
}

If you need more info, read this post.