/*

    Copyright (C) 2016 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    AudioEngine is the main controller class that manages the following:

                    AVAudioEngine           *_engine;

                    AVAudioEnvironmentNode  *_environment;

                    AVAudioPCMBuffer        *_collisionSoundBuffer;

                    NSMutableArray          *_collisionPlayerArray;

                    AVAudioPlayerNode       *_launchSoundPlayer;

                    AVAudioPCMBuffer        *_launchSoundBuffer;

                    bool                    _multichannelOutputEnabled;

                 It creates and connects all the nodes, loads the buffers as well as controls the AVAudioEngine object itself.

*/

@import Foundation;

@import AVFoundation;

@import SceneKit;

@protocol AudioEngineDelegate <NSObject>

@optional

- (void)engineWasInterrupted;

- (void)engineHasRestarted;

- (void)engineConfigurationHasChanged;

@end

@interface AudioEngine : NSObject

@property (weak) id<AudioEngineDelegate> delegate;

@property (nonatomic, getter=isRunning) BOOL running;

- (void)createPlayerForSCNNode:(SCNNode *)node;

- (void)destroyPlayerForSCNNode:(SCNNode *)node;

- (void)playCollisionSoundForSCNNode:(SCNNode *)node position:(AVAudio3DPoint)position impulse:(float)impulse;

- (void)playLaunchSoundAtPosition:(AVAudio3DPoint)position completionHandler:(AVAudioNodeCompletionHandler)completionHandler;

- (void)updateListenerPosition:(AVAudio3DPoint)position;

- (void)updateListenerOrientation:(AVAudio3DAngularOrientation)orientation;

-(AVAudio3DAngularOrientation)listenerAngularOrientation;

-(AVAudio3DPoint)listenerPosition;

@end