Restarting The Game
A Better Ending / Restarting
Currently the game simply stops after the player collides with a car. Lets add some code so that the game will restart after a few seconds.
- iOS lets you schedule work after a delay by using the DispatchQueue.main.asyncAfter() method. You tell it what time the code should run after and it will do te rest.
- The time is specified as an absolute time, so to say “two seconds from now” we need to write
.now() +2. - When that time is reached we need to make the new game scene out of the GameScene.
- Once we have the game scene we need to tell it to use aspectFill
- Finally we need to call
presentScene()on our scene’s view property to make the new scene display
Update playerHit as shown below.
func playerHit(_ node: SKNode) {
if let particles = SKEmitterNode(fileNamed: "Explosion.sks") {
particles.position = player.position
particles.zPosition = 3
addChild(particles)
}
player.removeFromParent()
let gameOver = SKSpriteNode(imageNamed: "gameOver-1")
gameOver.zPosition = 10
gameOver.position = CGPoint(x: self.frame.size.width/2, y: self.frame.size.height/2)
addChild(gameOver)
DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
let newScene = GameScene(size: self.size)
newScene.scaleMode = self.scaleMode
let animation = SKTransition.fade(withDuration: 2.0)
self.view?.presentScene(newScene, transition: animation)
}
}