How can I create an onscreen controller that works in multiple scenes in SpriteKit? - ios

Question

Working on a game in SpriteKit to learn. Its a platformer with an onscreen controller. I have this all working using touchesBegan and touchesEnded to know when the player is pushing the buttons or not. This works fine, however when i want to load the next scene for 'level 2' i need to implement the controller all over again. I could do a lot of copy and pasting but I feel this will lead to a lot of duplication of code. Every tutorial I've ever read said to try to adhere to the DRY principle.
Im sorry if this is simple, but I have <6 months programming experience and am trying to learn and improve. Im assuming I would need to create a separate class for the onscreen controller so it can be reused, but Im a little lost on where to start.
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
let location = (touch.location(in: playerCamera))
print("LocationX: \(location.x), LocationY: \(location.y)")
let objects = nodes(at: location)
print("\(objects)")
if rightButton.frame.contains(location) {
rightButtonPressed = true
playerFacingRight = true
playerFacingLeft = false
thePlayer.xScale = 1
let animation = SKAction(named: "running")!
let loopingAnimation = SKAction.repeatForever(animation)
thePlayer.run(loopingAnimation, withKey: "moveRight")
moveRight()
} else if leftButton.frame.contains(location) {
leftButtonPressed = true
playerFacingLeft = true
playerFacingRight = false
thePlayer.xScale = -1
let leftAnimation = SKAction(named: "running")!
let leftLoopingAnimation = SKAction.repeatForever(leftAnimation)
thePlayer.run(leftLoopingAnimation, withKey: "moveLeft")
moveLeft()
} else if upButton.frame.contains(location) {
upButtonPressed = true
print("upButton is pressed")
if playerAndButtonContact == true {
print("contact - player + button + upButtonPressed=true")
print("\(movingPlatform.position)")
button.texture = SKTexture(imageNamed: "switchGreen")
let moveRight = SKAction.moveTo(x: -150, duration: 3)
if movingPlatform.position == CGPoint(x: -355, y: movingPlatform.position.y) {
movingPlatform.run(moveRight)
thePlayer.run(moveRight)
button.run(moveRight)
}
}
if playerAndDoorSwitchContact == true {
let switchPressed = SKAction.run{
self.switchPressedSound()
self.doorSwitch.texture = SKTexture(imageNamed: "switchGreen")
self.door.texture = SKTexture(imageNamed: "DoorUnlocked")
}
let wait = SKAction.wait(forDuration: 2)
let doorOpen = SKAction.run {
let doorOpen = SKSpriteNode(imageNamed: "DoorOpen")
doorOpen.alpha = 0
doorOpen.position = self.door.position
doorOpen.size = self.door.size
doorOpen.size = self.door.size
self.door.zPosition = -2
doorOpen.zPosition = -1
let fadeIn = SKAction.fadeIn(withDuration: 0.5)
let start = SKAction.run {
self.addChild(doorOpen)
doorOpen.run(fadeIn)
}
let sound = SKAction.run {
self.doorOpeningSound()
}
let opening = SKAction.group([sound, start])
self.door.run(opening)
}
let sequence = SKAction.sequence([switchPressed, wait, doorOpen])
self.doorSwitch.run(sequence)
}
if playerAndDoorContact == true {
self.view?.presentScene(level1, transition: transition)
}
} else if downButton.frame.contains(location) {
}
else if shoot.frame.contains(location) {
shoot()
} else if jumpButton.frame.contains(location) {
self.pressed = true
let timerAction = SKAction.wait(forDuration: 0.05)
let update = SKAction.run {
if(self.force < Constants.maximumJumpForce) {
self.force += 2.0
} else {
self.jump(force: Constants.maximumJumpForce)
self.force = Constants.maximumJumpForce
}
}
let sequence = SKAction.sequence([timerAction, update])
let repeat_seq = SKAction.repeatForever(sequence)
self.run(repeat_seq, withKey: "repeatAction")
}
}
}