Within my GameView Controller.swift file, I removed viewDidLoad and put in viewWillLayoutSubviews because I will be using the dimensions of the device in my calculations. However, hello world SKLabelNode no longer is displayed in the simulator. Any ideas on what I'm doing wrong?
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
let skView = self.view as SKView
if skView.scene != nil{
skView.showsFPS = true
skView.showsNodeCount = true
skView.showsPhysics = true
// Create and configure the scene
let scene = SKScene(size: skView.bounds.size)
scene.scaleMode = SKSceneScaleMode.AspectFill;
// Present Scene
skView.presentScene(scene)
}
Related
I am trying to implement a main menu to my Spritekit game, but whenever I try to present the scene I get a blank gray screen. Here is the code right now, which presents the game itself and not a menu:
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
if let scene = GameScene(fileNamed:"GameScene") {
let skView = self.view as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
skView.showsDrawCount = true
skView.ignoresSiblingOrder = true
scene.scaleMode = SKSceneScaleMode.AspectFill
skView.presentScene(scene)
}
}
I'm new to this, and I wasn't sure what to do so I tried replacing GameScene with the menu scene, which gave me the gray screen. Any help will be appreciated.
Use this code to load a SKScene file that is created in code only and not in the Scene editor
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
if let skView = self.view as? SKView {
if skView.scene == nil {
let scene = MenuScene(size: skView.bounds.size)
skView.showsFPS = false
skView.showsNodeCount = true
skView.showsPhysics = true
skView.ignoresSiblingOrder = true
scene.scaleMode = .aspectFill
skView.presentScene(scene)
}
}
}
and then in your MenuScene file you will need an init func
init(size: CGSize) {
super.init(size: size)
name = "menuScene"
}
This code resides in the viewDidLoad function. The first time it is called it is fine. But then I present a subView on top of it from the same storyboard file and when 'let skView = gameView as! SKView' gets called again and throws a Fatal error: Found nil... How do I stop it from being called the other times? I can't think of any checks I could but in place.
if let scene = GameScene(fileNamed:"GameScene") {
// Configure the view.
let skView = gameView as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
/* Sprite Kit applies additional optimizations to improve rendering performance */
skView.ignoresSiblingOrder = true
/* Set the scale mode to scale to fit the window */
scene.scaleMode = .AspectFill
skView.presentScene(scene)
}
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
let skView = self.view as! SKView
if skView.scene == nil {
if let scene = GameScene(fileNamed:"GameScene") {
skView.presentScene(scene)
}
}
}
I am trying to initialize a scene in swift like so: let scene = GameScene(size: skView.bounds.size)
However the following error pops up in xcode:
Cannot invoke initializer for type 'GameScene' with an argument list of type '(size: CGSize)
Here is the related piece of code:
override func viewWillLayoutSubviews() {
var skView: SKView = self.view as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
let scene = GameScene(size: skView.bounds.size)
scene.scaleMode = .AspectFill
skView.presentScene(scene)
}
You probably might want to include the following initializer within your GameScene
override init(size: CGSize) {
super.init(size: size)
}
I have two views, the initial one that works fine, and a second one that I am trying to display after I transition to it from a button on the first view.
However, when I click the button, the transition happens and the screen goes blank.
Below is the viewDidLoad inside of the UIViewController class for the second view.
Also when it hits the
let sKView = view as! SKVIEW
line it spits out
Could not cast value of type 'UIView' (0x10a313eb0) to 'SKView' (0x1094d5718).
(lldb)
How do I get it to display the view?
class PlayViewController: UIViewController {
var scene2: PlayScene!
override func viewDidLoad() {
super.viewDidLoad()
let skView = view as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
scene2 = PlayScene(size: skView.bounds.size)
skView.ignoresSiblingOrder = true
/* Set the scale mode to scale to fit the window */
scene2.scaleMode = .AspectFill
skView.presentScene(scene2)
}
first class
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
if let scene = GameScene.unarchiveFromFile("GameScene") as? GameScene {
// Configure the view.
let skView = self.view as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
/* Sprite Kit applies additional optimizations to improve rendering performance */
skView.ignoresSiblingOrder = true
/* Set the scale mode to scale to fit the window */
scene.scaleMode = .AspectFill
skView.presentScene(scene)
}
}
the second scene
import SpriteKit
class PlayScene: SKScene {
override func didMoveToView(view: SKView) {
/* Setup your scene here */
let myLabel = SKLabelNode(fontNamed:"Chalkduster")
myLabel.text = "SCENE 2!";
myLabel.fontSize = 65;
myLabel.position = CGPoint(x:CGRectGetMidX(self.frame), y:CGRectGetMidY(self.frame));
self.addChild(myLabel)
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
/* Called when a touch begins */
for touch in (touches as! Set<UITouch>) {
let location = touch.locationInNode(self)
let sprite = SKSpriteNode(imageNamed:"Spaceship")
sprite.xScale = 0.5
sprite.yScale = 0.5
sprite.position = location
let action = SKAction.rotateByAngle(CGFloat(M_PI), duration:1)
sprite.runAction(SKAction.repeatActionForever(action))
self.addChild(sprite)
}
}
override func update(currentTime: CFTimeInterval) {
/* Called before each frame is rendered */
}
}
The issue is your view controllers view is your everyday run of the mill UIView instead of an SKView. Assuming you are using a storyboard click on the view controller and then click on the view and change the class to SKView instead of UIView.
Hopefully that helps.
I am not sure what are you trying to archive, you can try change your super class from UIViewController to SpriteViewController or you can create a new SKView and append to your view.
You cannot downcast a UIView to a SKView as a SKView inherit from UIView as you can see in the apple documentation
Inherits From
NSObject
UIResponder
UIView
SKView
I have gotten this problem several times in Xcode 6. the thing is that I got a ball running and when he hits a block he dies. he can jump though. but the very first block always crashes. like if I just roll normally like not in the air and hit the first block it just freezes and closes.
It gives me this error:
Thread 1: EXC_BAD_INSTRUCTION(code=EXC_1386_INVOP, subcode=0x0)
Line number 2 and 7 have a green background (counting the space).
This is the error line:
func didBeginContact(contact:SKPhysicsContact) {
died()
}
func died() {
if let scene = GameScene.unarchiveFromFile("GameScene") as? GameScene {
let skView = self.view as SKView
skView.ignoresSiblingOrder = true
scene.size = skView.bounds.size
scene.scaleMode = .AspectFill
skView.presentScene(scene)
}
}
EXC_BAD_INSTRUCTION implies that there was an assert somewhere in your code. The only line of the code you provided that can throw an assert is:
let skView = self.view as SKView
It will assert if self.view cannot be cast to an SKView. It seems as if self.view is not actually an SKView.
To be sure, you can do an optional cast like you did with scene:
if let scene = GameScene.unarchiveFromFile("GameScene") as? GameScene {
if let skView = self.view as? SKView {
skView.ignoresSiblingOrder = true
scene.size = skView.bounds.size
scene.scaleMode = .AspectFill
skView.presentScene(scene)
}
}
I Believe I have found a fix for your problem.
change let skView = self.view as SKView to
if let skView = self.view as SKView!
if let skView = self.view as? SKView! {
skView.ignoresSiblingOrder = true
scene.size = skView.bounds.size
scene.scaleMode = .AspectFill
skView.presentScene(scene)
}
should work