How to detect GameScene touches from another file using swift - swift

Question

I am currently making a game in sprite kit. In the game, there are random shapes and objects on the ground that you can pick up and rotate and stack on to one another to build up to a target height. Once the target height is reached you move on to the next level. Each object and shape is created in a swift file separate from the GameScene under the SKNode class. I am able to pick the object up and move it around on the screen using the touchesBegan, moved, and ended methods in the node. While I'm holding on to the object I would like to be able to tap and hold the screen with a second finger anywhere on the screen that rotates the object until the finger is let go, so, the first finger grabs and hold the object while the other finger rotates it. The problem is that I have found it almost impossible for the SKNode to detect a touch outside of the actual node. Below is the code I have used for the SKNode. Any advice or suggestions would be greatly appreciated, thank you.
import UIKit
import SpriteKit
class GameObjects: SKNode {
var object: SKSpriteNode
var action: () -> Void
init(objectImage: String, buttonAction: () -> Void ){
object = SKSpriteNode(imageNamed: objectImage)
action = buttonAction
let object1Texture = SKTexture(imageNamed: "object1")
object1Texture.filteringMode = SKTextureFilteringMode.Nearest
let size = CGSize(width: 100, height: 100)
object.physicsBody = SKPhysicsBody(texture: object1Texture, size: size)
object.physicsBody?.dynamic = true
object.physicsBody?.allowsRotation = true
object.physicsBody?.affectedByGravity = true
super.init()
userInteractionEnabled = true
addChild(object)
}
required init(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
for touch in (touches ) {
let location: CGPoint = touch.locationInNode(self)
let moveUp = SKAction.moveToY(location.y + 200, duration: 0.05)
object.runAction( moveUp)
}
object.physicsBody?.dynamic = false
object.physicsBody?.affectedByGravity = false
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
for touch in (touches ) {
let location: CGPoint = touch.locationInNode(self)
object.physicsBody?.allowsRotation = true
object.physicsBody?.dynamic = true
object.position.x = location.x
object.position.y = location.y + 200
}
}
override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
object.physicsBody?.dynamic = true
object.physicsBody?.affectedByGravity = true
}
}