Get collision component of source Blender model - swift

Question

I have a blender import model with a simple plane with cylinders on it.
Now i want a collision component on the cylinders.
The imported model and children form blender printed out if i start the app. This is working fine but no collision on the cylinders
▿ '/' : Entity, children: 1
⟐ Transform
⟐ SynchronizationComponent
▿ 'cilinders' : Entity, children: 6
⟐ Transform
⟐ SynchronizationComponent
▿ 'Light' : Entity
⟐ Transform
⟐ SynchronizationComponent
▿ 'Camera' : Entity
⟐ Transform
⟐ SynchronizationComponent
▿ 'Plane' : Entity, children: 1
⟐ Transform
⟐ SynchronizationComponent
▿ 'Plane_geometry' : ModelEntity
⟐ Transform
⟐ ModelComponent
⟐ SynchronizationComponent
▿ 'Cylinder' : Entity, children: 1
⟐ Transform
⟐ SynchronizationComponent
▿ 'Cylinder_geometry' : ModelEntity
⟐ Transform
⟐ ModelComponent
⟐ SynchronizationComponent
▿ 'Cylinder_001' : Entity, children: 1
⟐ Transform
⟐ SynchronizationComponent
▿ 'Cylinder_001_geometry' : ModelEntity
⟐ Transform
⟐ ModelComponent
⟐ SynchronizationComponent
▿ 'Cylinder_002' : Entity, children: 1
⟐ Transform
⟐ SynchronizationComponent
▿ 'Cylinder_002_geometry' : ModelEntity
⟐ Transform
⟐ ModelComponent
⟐ SynchronizationComponent
I want the cylinders to collide so here my code for that, this is for one cylinder:
let cylinder1 = importModel.children[0].children[3].children[0] as! ModelEntity
cylinder1.generateCollisionShapes(recursive: false)
And the add it to collision events:
DispatchQueue.main.async {
arView.scene.subscribe(to: CollisionEvents.Began.self,
on: cylinder1) { _ in
print("Collision ball detected!")
}.store(in: &self.subscriptions)
}
Collision is not working. What am I missing here?

Answer 1

My code definitely works. This answer is an addition to that post.
let cylinders = try! Entity.load(named: "cylinders.usdz")
guard let cylinder1 = cylinders.findEntity(named: "Cylinder_001_geometry")
as? (Entity & HasPhysics)
else { fatalError() }
cylinder1.position = [0,-0.5, 0]
cylinder1.orientation = .init(angle: -.pi/2, axis: [1, 0, 0])
cylinder1.scale /= 5
cylinder1.physicsBody = .init()
cylinder1.physicsBody?.mode = .static
cylinder1.generateCollisionShapes(recursive: false)
// ...
anchor.addChild(cylinder1)