How do you attach an object to your camera position with ARKit Swift?

Question

I have moving objects which I want to have be able to collide with me the player. I have the ability to launch objects from me by getting my current position/direction at that t

Answer 1

You need to take Jimi's answer and give the ball a color or texture to see it:

let ball = SCNSphere(radius: 0.02)
ball.firstMaterial?.diffuse.contents = UIColor.red
let ballNode = SCNNode(geometry: ball)
ballNode.position = SCNVector3Make(0, 0, -0.2)
self.sceneView.pointOfView?.addChildNode(ballNode)