I want to learn SpriteKit and am following this tutorial, https://www.raywenderlich.com/187645/spritekit-tutorial-for-beginners-2
I have copied and pasted the same code from the tutorial into GameScene.swift as well as moved the picture of the ninja into Assets.xcassets
However, when I get two errors,
Before I run it I get
Forced cast of SkView to same type has no effect
After I run it I also get
Thread 1: EXC_BAD_ACCESS(code=2, address=0x7ffeed594fa8
When I run it, the app is simply blank... The app should show FPS count and NodeCount?
Here's my code:
import SpriteKit
import GameplayKit
class GameScene: SKScene {
override func didMove(to view: SKView) {
let scene = GameScene(size: view.bounds.size)
let skView = view as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
skView.ignoresSiblingOrder = true
scene.scaleMode = .resizeFill
skView.presentScene(scene)
}
override func update(_ currentTime: TimeInterval) {
// Called before each frame is rendered
}
}
All of this code is in GameScene.swift
If someone could please help me that would be great!
UPDATE: I am using Swift 4
It seems you have an infinite recursion there. Note that you already have a GameScene instance but in the didMove you are creating another GameScene which you are presenting again which again is presented in the view and didMove is called again and so on. I think your code should look something like this:
override func didMove(to view: SKView) {
self.size = view.bounds.size
view.showsFPS = true
view.showsNodeCount = true
view.ignoresSiblingOrder = true
self.scaleMode = .resizeFill
}
Related
I started studying SpriteKit recently with one famous textbook and immediately a problem arose. In all video lessons, SKView covers the entire display area. I have the opposite situation and I don't know how to fix it. Here are the screenshots:
iPhone with notch
classic iPhone
Here is the source code:
GameViewController.swift:
import UIKit
import SpriteKit
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Set the scale mode to scale to fit the window
let skView = self.view as! SKView
skView.showsFPS = true
skView.showsNodeCount = true
skView.ignoresSiblingOrder = true
let scene = GameScene(size: CGSize(width: 2000, height: 1500))
scene.scaleMode = .aspectFill
// Present the scene
skView.presentScene(scene)
}
override var shouldAutorotate: Bool {
return true
}
override var prefersStatusBarHidden: Bool {
return true
}
}
GameScene.swift:
import SpriteKit
class GameScene: SKScene {
override func didMove(to view: SKView) {
backgroundColor = .brown
}
}
I don't know if anyone had such problems before the macOS 11 and Xcode 12, but now they are.
How to stretch SKView across all screen?
Set your project's Lauch screen file to "Main".
As you can see below in the simulator screen, the fps debug info gets cropped out.
I know it is merely a debug functionality and it will not be delivered to production but it just bugs me.
Is there a way to display the debug info correctly? Thank you.
Here is how the GameScene is initialised:
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
if let view = self.view as! SKView? {
let scene: SKScene = GameScene(size: view.bounds.size)
scene.scaleMode = .aspectFill
view.presentScene(scene)
view.ignoresSiblingOrder = true
view.showsFPS = true
view.showsNodeCount = true
}
}
}
Apparently, view is not in a safe area. Use self.view.safeAreaLayoutGuide.layoutFrame to get the frame in which it's safe to show content and it won't be blocked.
I want to change the initial scene being presented to be another class other than the default GameScene class. From reading other questions, I understand I must change this part from the GameViewController:
if let scene = SKScene(fileNamed: "GameScene") {
print(scene)
// Set the scale mode to scale to fit the window
scene.scaleMode = .aspectFill
// Present the scene
view.presentScene(scene)
}
So within the GameScene.swift file I am creating a new class:
class MainMenu : SKScene {
override func didMove(to view: SKView) {
print("At least it ran")
self.scene?.view?.presentScene(GameScene())
}
}
However, when I change the scene to:
if let scene = SKScene(fileNamed: "MainMenu")
When I run the project, it gets stuck, but when I run it with the string "GameScene" then it works perfectly. I am doing something wrong loading the MainMenu?
In my opinion you should separate your scenes into their own files...
Do you have an corresponding SKS file for MenuScene? You need to create one if you are trying to load it with fileNamed:
or -
Use this code to load a SKScene file that is created in code only and not in the Scene editor
if let skView = self.view as? SKView {
if skView.scene == nil {
let scene = MenuScene(size: skView.bounds.size)
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"
}
I just created a brand new Xcode Game Project. I deleted the Gamescene.sks file. Ran it and the cpu instantly to 25-30%. I made another Xcode project just to see if I could replicate it. Ran it before deleting the file and cpu was basically 0%, but sure enough when I deleted the file and ran it again, the cpu jumped up to the same high numbers. My goal is to subclass skscene and use that without the Gamescene.sks file. Can someone explain why this happens?
I was able to replicate this behavior just deleting the .sks file.
The problem is GameViewController is looking for that file at first loading time, as you can see here:
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
if let view = self.view as! SKView? {
// Load the SKScene from 'GameScene.sks'
if let scene = SKScene(fileNamed: "GameScene") { <--------------!!
// Set the scale mode to scale to fit the window
scene.scaleMode = .aspectFill
// Present the scene
view.presentScene(scene)
}
view.ignoresSiblingOrder = true
view.showsFPS = true
view.showsNodeCount = true
}
}
So you need to initialize it another way. Just as an example, you could init an empty scene like this:
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
if let view = self.view as! SKView? {
// Load the SKScene from 'GameScene.sks'
let scene = SKScene(size: CGSize(width: 1000, height: 1000))
scene.scaleMode = .aspectFill
view.presentScene(scene)
view.ignoresSiblingOrder = true
view.showsFPS = true
view.showsNodeCount = true
}
}
and you'll see 1% of CPU load.
I'm creating a game using Sprite Kit. I have my GameScene and GameOverScenenow I want to create a MenuScene Where do I control the order of the MenuScene so that it shows up after LaunchScene
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
if let scene = GameScene.unarchiveFromFile("MenuScene") as? GameScene {
// Configure the view.
let skView = self.view as! SKView
skView.ignoresSiblingOrder = true
scene.scaleMode = .AspectFill
skView.presentScene(scene)
}
}
Edit tried putting ("MenuScene") as the scene but when I run the game that scene won't show
Ok so I found out that I was one the right path. I just needed to change this line. Instead of this
if let scene = GameScene.unarchiveFromFile("MenuScene") as? GameScene {
add this
if let scene = MenuScene.unarchiveFromFile("MenuScene") as? MenuScene {