project_files/HedgewarsMobile/Classes/AudioManagerController.m
author koda
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/*
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 * Hedgewars-iOS, a Hedgewars port for iOS devices
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 * Copyright (c) 2009-2012 Vittorio Giovara <vittorio.giovara@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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 */
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#import "AudioManagerController.h"
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#import "AVFoundation/AVAudioPlayer.h"
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#import "MXAudioPlayerFadeOperation.h"
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#define DEFAULT_VOLUME    0.45f
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#define FADEOUT_DURATION  3.0f
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#define FADEIN_DURATION   2.0f
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static AudioManagerController *mainInstance;
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@implementation AudioManagerController
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@synthesize backgroundMusic, clickSound, backSound, selSound, audioFaderQueue;
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+(id) mainManager {
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    if (mainInstance == nil)
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        mainInstance = [[self alloc] init];
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    return mainInstance;
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}
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-(id) init {
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    if ((self = [super init])) {
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        self.backgroundMusic = nil;
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        self.clickSound = -1;
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        self.backSound = -1;
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        self.selSound = -1;
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        self.audioFaderQueue = nil;
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    }
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    return self;
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}
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-(void) dealloc {
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    [self unloadSounds];
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    releaseAndNil(backgroundMusic);
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    releaseAndNil(audioFaderQueue);
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    mainInstance = nil;
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    [super dealloc];
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}
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-(void) didReceiveMemoryWarning {
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    if (self.backgroundMusic.playing == NO)
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        self.backgroundMusic = nil;
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    if ([self.audioFaderQueue operationCount] == 0)
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        self.audioFaderQueue = nil;
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    [self unloadSounds];
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    MSG_MEMCLEAN();
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}
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#pragma mark -
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#pragma mark background music control
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-(void) playBackgroundMusic {
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    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"music"] boolValue] == NO)
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        return;
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    if (self.backgroundMusic == nil) {
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        NSString *musicString = [[NSBundle mainBundle] pathForResource:@"hwclassic" ofType:@"mp3"];
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        self.backgroundMusic = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:musicString] error:nil];
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        self.backgroundMusic.delegate = nil;
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        self.backgroundMusic.numberOfLoops = -1;
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    }
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    self.backgroundMusic.volume = DEFAULT_VOLUME;
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    [self.backgroundMusic play];
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}
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-(void) pauseBackgroundMusic {
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    [self.backgroundMusic pause];
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}
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-(void) stopBackgroundMusic {
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    [self.backgroundMusic stop];
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}
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-(void) fadeOutBackgroundMusic {
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    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"music"] boolValue] == NO)
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        return;
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    if (self.audioFaderQueue == nil)
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        self.audioFaderQueue = [[NSOperationQueue alloc] init];
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    MXAudioPlayerFadeOperation *fadeOut = [[MXAudioPlayerFadeOperation alloc] initFadeWithAudioPlayer:self.backgroundMusic
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                                                                                             toVolume:0.0
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                                                                                         overDuration:FADEOUT_DURATION];
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    [self.audioFaderQueue addOperation:fadeOut];
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    [fadeOut release];
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}
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-(void) fadeInBackgroundMusic {
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    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"music"] boolValue] == NO)
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        return;
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    if (self.audioFaderQueue == nil)
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        self.audioFaderQueue = [[NSOperationQueue alloc] init];
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    [self playBackgroundMusic];
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    MXAudioPlayerFadeOperation *fadeIn = [[MXAudioPlayerFadeOperation alloc] initFadeWithAudioPlayer:self.backgroundMusic
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                                                                                            toVolume:DEFAULT_VOLUME
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                                                                                        overDuration:FADEIN_DURATION];
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    [audioFaderQueue addOperation:fadeIn];
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    [fadeIn release];
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}
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#pragma mark -
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#pragma mark sound effects control
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-(SystemSoundID) loadSound:(NSString *)snd {
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    SystemSoundID soundID;
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    // get the filename of the sound file in a NSURL format
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    NSString *path = [[NSBundle mainBundle] pathForResource:snd ofType:@"caf"];
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    NSURL *filePath = [NSURL fileURLWithPath:path isDirectory:NO];
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    // use audio sevices to create and play the sound
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    AudioServicesCreateSystemSoundID((CFURLRef)filePath, &soundID);
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    return soundID;
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}
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-(void) unloadSounds {
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    AudioServicesDisposeSystemSoundID(clickSound), clickSound = -1;
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    AudioServicesDisposeSystemSoundID(backSound), backSound = -1;
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    AudioServicesDisposeSystemSoundID(selSound), selSound = -1;
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}
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-(void) playClickSound {
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    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"sound"] boolValue] == NO)
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        return;
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    if (self.clickSound == -1)
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        self.clickSound = [self loadSound:@"clickSound"];
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    AudioServicesPlaySystemSound(self.clickSound);
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}
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-(void) playBackSound {
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    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"sound"] boolValue] == NO)
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        return;
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    if (self.backSound == -1)
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        self.backSound = [self loadSound:@"backSound"];
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    AudioServicesPlaySystemSound(self.backSound);
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}
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-(void) playSelectSound {
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    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"sound"] boolValue] == NO)
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        return;
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    if (self.selSound == -1)
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        self.selSound = [self loadSound:@"selSound"];
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    AudioServicesPlaySystemSound(self.selSound);
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}
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@end