Swift SpriteKit: Use of unresolved identifier "player"? - swift

Question

When I try to run an action on a sprite I've set a constant for in didMoveToView, I use the same name for it in the touchesBegan function and get a "use of unresolved identifier: "player" error. I have another game where I so the exact same thing and it runs perfectly. Need help! Here is my code:
import SpriteKit
class GameScene: SKScene {
var movingGround : MCTGround!
var fruitGenerator : MCTFruitGen!
var cloudGenerator: MCTCloudGen!
var isStarted = false
override func didMoveToView(view: SKView) {
let player = SKSpriteNode(imageNamed: "koala_idle")
player.position = CGPointMake(95, 150)
addChild(player)
backgroundColor = UIColor(red: 159.0/255.0, green: 201.0/255.0, blue: 244.0/255.0, alpha: 1.0)
movingGround = MCTGround(size: CGSizeMake(view.frame.width, 20))
movingGround.position = CGPointMake(0, view.frame.size.height / 4)
addChild(movingGround)
fruitGenerator = MCTFruitGen(color: UIColor.clearColor(), size: view.frame.size)
fruitGenerator.position = view.center
addChild(fruitGenerator)
let frames = [
SKTexture(imageNamed: "koala_idle"),
SKTexture(imageNamed: "koala_walk01"),
SKTexture(imageNamed: "koala_walk02"),
]
let duration = 1.5 + drand48() * 1.0
let move = SKAction.animateWithTextures(frames, timePerFrame:0.10)
let wait = SKAction.waitForDuration(duration)
let rest = SKAction.setTexture(frames[0])
let sequence = SKAction.sequence([move, rest])
player.runAction(SKAction.repeatActionForever(sequence))
cloudGenerator = MCTCloudGen(color: UIColor.clearColor(), size: view.frame.size)
cloudGenerator.position = view.center
addChild(cloudGenerator)
cloudGenerator.populate(7)
cloudGenerator.startGeneratingWithSpawnTime(1)
}
func start() {
isStarted = true
cloudGenerator.startGeneratingWithSpawnTime(1)
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
jumpPlayer()
movingGround.start()
fruitGenerator.startGeneratingFruitEvery(1)
}
override func update(currentTime: CFTimeInterval) {
}
func jumpPlayer() {
let jumpUpAction = SKAction.moveByX(0, y: 40, duration: 0.5)
let jumpDownAction = SKAction.moveByX(0, y: -40, duration: 0.5)
let jumpSequence = SKAction.sequence([jumpUpAction, jumpDownAction])
player.runAction(jumpSequence) // This is where my error is
}
}

Answer 1

Make player a class scope variable (property). Declare it not in a function, but a level above.
var player: SKSpriteNode?
override func didMoveToView(view: SKView) {
player = SKSpriteNode ...
then access it via player?. The safest way.

Answer 2

Your problem is that you are declaring player inside didMoveToView. This makes it private to the didMoveToView method. All you need to do is move let player = SKSpriteNode(imageNamed: "koala_idle") to where you declare movingGround and the other variables with it.
The beginning your code should look like this:
import SpriteKit
class GameScene: SKScene {
var movingGround : MCTGround!
var fruitGenerator : MCTFruitGen!
var cloudGenerator: MCTCloudGen!
let player = SKSpriteNode(imageNamed: "koala_idle")
var isStarted = false
override func didMoveToView(view: SKView) {
player.position = CGPointMake(95, 150)
addChild(player)

Answer 3

Go to File Inspector (right click on the file referenced in the error and select Show File Inspector). In Target Membership make sure your actual app is selected.
In my case only the Test modules were selected.
So as far as I can tell (I'm new to all this), the referenced file was hidden/unregistered with the ViewController.