SKCameraNode working weird - swift

Question

I'm trying to create a simple SpriteKit game. I have a player that starts from the bottom-center of the screen.
I added to my GameScene a camera to follow the player but it does not work. when I run it with this code:
class GameScene: SKScene {
let mPlayer = Player(circleOfRadius: 45, fillColor: myColors.blue, strokeColor: myColors.red)
let cameraNode = SKCameraNode()
override func didMove(to view: SKView) {
setup()
}
override func update(_ currentTime: TimeInterval) {
// Called before each frame is rendered
moveCamera()
Player.movePlayerUp(mPlayer: mPlayer)
}
func setup(){
mPlayer.position = CGPoint(x: self.frame.midX - PLAYER_WIDTH, y: self.frame.minY + PLAYER_HEIGHT)
self.camera?.position = mPlayer.position
self.camera = cameraNode
self.addChild(cameraNode)
self.addChild(mPlayer)
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches{
let location = touch.location(in: self)
mPlayer.run(SKAction.moveTo(x: location.x, duration: 0.1))
}
}
func moveCamera(){
let moveAction = SKAction.moveTo(y: mPlayer.position.y, duration: 0.1)
cameraNode.run(moveAction)
}
}
the player is starting from the bottom and immediately moves to the center of the screen like in this picture:
How can I make the camera to follow the player from the start and move with it to the top?
Hope my question is clear and sorry for the size of the picture.

Answer 1

This code works for me in a empty Xcode project. You are probably thinking its not because your background image is 1 color and you are only moving the player briefly.
Also in your update method you set to move the player constantly to the middle, which is not necessary.
Try adding some stripes to the background to make it easier to see if you move and than add this code to the update method do slowly move the player up constantly.
let action = SKAction.move(by: CGVector(dx: 0, dy: 5), duration: 1)
mPlayer.run(action)
You will see the camera is following the player correctly.
If you need to center your camera differently to the player e.g on the y axis than you just have to increase/decrease the y position of the camera.
let moveAction = SKAction.moveTo(y: mPlayer.position.y + 200, duration: 0.1)
cameraNode.run(moveAction)
Hope this helps