How can I flash the whole screen? - swift

Question

I wanted to know how can the the screen flash when I touch the screen. I had tried to colorizeWhitColor but it only colorized the background, and I don't know how to return to the same color.
scene?.runAction(SKAction.colorizeWithColor(UIColor.blackColor(), colorBlendFactor: 1.0, duration: 0.5))
class GameViewController: UIViewController {
let viewFlash = UIView.init(frame: UIScreen.mainScreen().bounds)
override func viewDidLoad() {
super.viewDidLoad()
if let scene = GameScene(fileNamed:"GameScene") {
// Configure the view.
let skView = self.view as! SKView
skView.showsFPS = false
skView.showsNodeCount = false
/* 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)
viewFlash.hidden = true
self.view.addSubview(viewFlash)
}
func flashScreen(color: UIColor, flashTime: NSTimeInterval){
viewFlash.backgroundColor = color
viewFlash.hidden = false
NSTimer.scheduledTimerWithTimeInterval(flashTime, target: self, selector:#selector(ViewController.stopFlash), userInfo: nil, repeats: false) //here it tells me that
}
func stopFlash(){
viewFlash.hidden = true
}
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
/* Called when a touch begins */
if gameStarted == false {
flashScreen(UIColor.whiteColor(), 0.1)
circuloVerde.removeFromParent()
circuloMorado.removeFromParent()
circuloRojo.removeFromParent()
circuloBlanco.removeFromParent()
enemigoTimer = NSTimer.scheduledTimerWithTimeInterval(0.685, target: self, selector: Selector("enemigos"), userInfo: nil, repeats: true)
gameStarted = true
circuloPrincipal.runAction(SKAction.scaleTo(0.44, duration: 0.5))
score = 0
scoreLabel.text = "\(score)"
hits = 0
highscoreLabel.runAction(SKAction.fadeOutWithDuration(0.5))
}
}

Answer 1

In GameViewController.swift:
import UIKit
import SpriteKit
class GameViewController: UIViewController {
let viewFlash = UIView.init(frame: UIScreen.mainScreen().bounds)
override func viewDidLoad() {
super.viewDidLoad()
viewFlash.hidden = true
self.view.addSubview(viewFlash)
if let scene = GameScene(fileNamed:"GameScene") {
// Configure the view.
let skView = self.view as! SKView
skView.showsFPS = false
skView.showsNodeCount = false
/* 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)
}
}
func flashScreen(color: UIColor, flashTime: NSTimeInterval){
viewFlash.backgroundColor = color
viewFlash.hidden = false
NSTimer.scheduledTimerWithTimeInterval(flashTime, target: self, selector:#selector(self.stopFlash), userInfo: nil, repeats: false)
}
func stopFlash(){
viewFlash.hidden = true
}
}
In GameScene.swift:
import SpriteKit
class GameScene: SKScene {
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
/* Called when a touch begins */
if gameStarted == false {
//This is the new part
var parentVC = view?.window?.rootViewController as! GameViewController
parentVC.flashScreen(UIColor.whiteColor(), flashTime: 0.1)
//This is the new part
circuloVerde.removeFromParent()
circuloMorado.removeFromParent()
circuloRojo.removeFromParent()
circuloBlanco.removeFromParent()
enemigoTimer = NSTimer.scheduledTimerWithTimeInterval(0.685, target: self, selector: Selector("enemigos"), userInfo: nil, repeats: true)
gameStarted = true
circuloPrincipal.runAction(SKAction.scaleTo(0.44, duration: 0.5))
score = 0
scoreLabel.text = "\(score)"
hits = 0
highscoreLabel.runAction(SKAction.fadeOutWithDuration(0.5))
}
}
}