Swift Audio Playback Speed

Question

I am developing a game where the main sprite is a spinning wheel. I would like to associate a sound with a spinning wheel that changes pitch when the wheel slows down. When the wheel stops spinning, I want the sound effect to stop. Can someone point me in the right direction?

In my game scene, I have the following code:

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { for touch in touches { let location = touch.location(in: self) //Start spinning the wheel if atPoint(location).name == "play_button" { player?.physicsBody?.angularVelocity = 0 player?.rotatePlayer() //Click back button } else if atPoint(location).name == "back_button" { let play_scene = CharacterSelectScene(fileNamed: "CharacterSelect") play_scene?.scaleMode = .aspectFill self.view?.presentScene(play_scene!, transition: SKTransition.doorsOpenVertical(withDuration: 1)) } else if atPoint(location).name == "settings_button" { let play_scene = SettingsScene(fileNamed: "SettingsScene") play_scene?.scaleMode = .aspectFill self.view?.presentScene(play_scene!, transition: SKTransition.doorsOpenVertical(withDuration: 1)) } } } override func didSimulatePhysics() { let speed = player?.physicsBody?.angularVelocity if (speed != CGFloat(0.0)) { if (speed! <= CGFloat(0.1)){ finishedRotation = true } } } override func didFinishUpdate() { if (finishedRotation == true) { let play_scene = QuestionScene(fileNamed: "QuestionScene") play_scene?.scaleMode = .aspectFill self.view?.presentScene(play_scene!, transition: SKTransition.doorsOpenVertical(withDuration: 1)) } } func didBegin(_ contact: SKPhysicsContact) { let defaults = UserDefaults.standard var firstBody = SKPhysicsBody() var secondBody = SKPhysicsBody() if (contact.bodyA.node?.name == "pin") { firstBody = contact.bodyA secondBody = contact.bodyB } else { firstBody = contact.bodyB secondBody = contact.bodyA } if (firstBody.node?.name == "pin" && secondBody.node?.name == "geography") { let set_topic = secondBody.node?.name defaults.set(set_topic, forKey: "Topic") } else if (firstBody.node?.name == "pin" && secondBody.node?.name == "maths") { let set_topic = secondBody.node?.name defaults.set(set_topic, forKey: "Topic") } else if (firstBody.node?.name == "pin" && secondBody.node?.name == "history") { let set_topic = secondBody.node?.name defaults.set(set_topic, forKey: "Topic") } else if (firstBody.node?.name == "pin" && secondBody.node?.name == "science") { let set_topic = secondBody.node?.name defaults.set(set_topic, forKey: "Topic") } } 

The rotatePlayer method from the Player class is defined as follows:

 func rotatePlayer() { let random = GKRandomDistribution(lowestValue: 20, highestValue: 120) let r = random.nextInt() self.physicsBody?.angularVelocity = 0 self.physicsBody?.angularVelocity = CGFloat(r) self.physicsBody?.angularDamping = 1.02 } 

Answer 1

I solved the problem and the code is below:

 func playSound() { let url = Bundle.main.url(forResource: "clicker", withExtension: "m4a")! do { SoundEffect = try AVAudioPlayer(contentsOf: url) guard let players = SoundEffect else { return } players.prepareToPlay() players.play() } catch let error as NSError { print(error.description) } } func didEnd(_ contact: SKPhysicsContact) { let defaults = UserDefaults.standard var firstBody = SKPhysicsBody() var secondBody = SKPhysicsBody() if (contact.bodyA.node?.name == "pin") { firstBody = contact.bodyA secondBody = contact.bodyB } else { firstBody = contact.bodyB secondBody = contact.bodyA } if (firstBody.node?.name == "pin" && secondBody.node?.name == "geography") { let set_topic = secondBody.node?.name defaults.set(set_topic, forKey: "Topic") playSound() } else if (firstBody.node?.name == "pin" && secondBody.node?.name == "maths") { let set_topic = secondBody.node?.name defaults.set(set_topic, forKey: "Topic") playSound() } else if (firstBody.node?.name == "pin" && secondBody.node?.name == "history") { let set_topic = secondBody.node?.name defaults.set(set_topic, forKey: "Topic") playSound() } else if (firstBody.node?.name == "pin" && secondBody.node?.name == "science") { let set_topic = secondBody.node?.name defaults.set(set_topic, forKey: "Topic") playSound() } }