RealityKit & Reality Composer Pro

Mar 27 2024 · Swift 5.10, visionOS 1.1, Xcode 15.3

Lesson 04: Using Reality Composer Pro to Create AR Experiences

Demo

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Start with the app you’ve been building or use the QHoops app in the Starter folder.

var tapGesture: some Gesture {
  TapGesture()
    .targetedToAnyEntity()
    .onEnded { value in
      // do nothing
      value.entity.components[PhysicsBodyComponent.self]?.mode = .dynamic
      value.entity.components[PhysicsMotionComponent.self]?.linearVelocity = [0, 7, -5]
    }
}

.gesture(tapGesture)

@State private var goalEntity: Entity?
@State private var goalScored: EventSubscription?
@State private var goalCelebration: Bool = false

goalEntity = content.entities.first?.findEntity(named: "Goal")

goalScored = content.subscribe(to: CollisionEvents.Began.self, on: goalEntity) { collisionEvent in
  print("Goal detected \(collisionEvent.entityA.name) and \(collisionEvent.entityB.name)")
  goalCelebration = true
}

goalEntity?.components.set(OpacityComponent(opacity: 0.0))

@State private var confetti: Entity?

confetti = content.entities.first?.findEntity(named: "ConfettiEmitter")

confetti?.components.set(OpacityComponent(opacity: 0.0))

} update: { content in
  if let _ = content.entities.first {
    if goalCelebration == true {
      confetti?.components.set(OpacityComponent(opacity: 1.0))
    }
  }
}

@State private var cheering: Entity?
@State private var audio: AudioFileResource?

cheering = content.entities.first?.findEntity(named: "ChannelAudio")
audio = try? await AudioFileResource(named: "/Root/cheering_m4a", from: "Immersive.usda", in: realityKitContentBundle)

if let audioPlaybackControl = cheering?.prepareAudio(audio!) {
  audioPlaybackControl.play()
}
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