Move spritekit node only within a specific bounds - ios

Question

I'm new to spritekit so this looks like a silly question but I can't figure out. The player (shown in blue circle) can only go above lines and inside the square. I added a joystick, user can go up or down above left line. I want player to be limited to only line so when It comes the left edge, user should move joystick to right. How can I achieve it?
I tried to update player position in override func update(_ currentTime: TimeInterval) function like below to update enum position and check it everytime in move logic;
override func update(_ currentTime: TimeInterval) {
if((player?.position.x)!.rounded() <= self.barra.frame.minX.rounded()){
player?.playerPosition == .left
}
print(player?.position)
}
How I declare square;
let barra = SKShapeNode(rectOf: CGSize(width: 600, height: 300)) //Line
override func sceneDidLoad() {
player = self.childNode(withName: "player") as? Player
player?.physicsBody?.categoryBitMask = playerCategory
player?.physicsBody?.collisionBitMask = noCategory
player?.physicsBody?.contactTestBitMask = enemyCategory | itemCategory
player?.playerPosition = .left
barra.name = "bar"
barra.fillColor = SKColor.clear
barra.lineWidth = 3.0
barra.position = CGPoint(x: 0, y: 0)
self.addChild(barra)
player?.position = CGPoint(x: barra.frame.minX , y: barra.frame.minY)
}
How I move the player;
override func didMove(to view: SKView) {
/* Setup your scene here */
backgroundColor = UIColor.black
physicsBody = SKPhysicsBody(edgeLoopFrom: frame)
moveAnalogStick.position = CGPoint(x: moveAnalogStick.radius + 15, y: moveAnalogStick.radius + 15)
addChild(moveAnalogStick)
moveAnalogStick.stick.color = UIColor.white
//MARK: Handlers begin
moveAnalogStick.beginHandler = { [unowned self] in
guard let aN = self.player else {
return
}
//aN.run(SKAction.sequence([SKAction.scale(to: 0.5, duration: 0.5), SKAction.scale(to: 1, duration: 0.5)]))
}
moveAnalogStick.trackingHandler = { [unowned self] data in
guard let aN = self.player else {
return
}
if(self.player?.playerPosition == .left){
aN.position = CGPoint(x: aN.position.x, y: aN.position.y + (data.velocity.y * 0.12))
}
}
moveAnalogStick.stopHandler = { [unowned self] in
guard let aN = self.player else {
return
}
// aN.run(SKAction.sequence([SKAction.scale(to: 1.5, duration: 0.5), SKAction.scale(to: 1, duration: 0.5)]))
}
//MARK: Handlers end
let selfHeight = frame.height
let btnsOffset: CGFloat = 10
let btnsOffsetHalf = btnsOffset / 2
view.isMultipleTouchEnabled = true
}
Player class:
enum Position{
case left
case right
case up
case down
case inside
}
enum CanMove{
case upDown
case leftRight
case all
}
class Player: SKSpriteNode {
var playerSpeed: CGFloat = 0.0
var playerPosition: Position = .left //Default one
var canMove: CanMove = .upDown
func move(){
}
}