ios - Cocos2d 2.0 SimpleAudioEngine 在另一个对象中停止音效

Question

我正在尝试使用 Cocos2d 2.0 中的 simpleaudioengine 停止音频效果。

我有以下情况；

白天/晚上有两个天空层的农场场景。这些是放置的精灵，在场景的图层中创建。我也有放置的其他角色的精灵类（使用 Ray Wenderlichs Space Viking 代码）。

触摸天空后，我将白天变为夜晚，反之亦然，我可以使用 Farm Layer (PollitosLayer.m) 中的 ALuint ID 启动和停止夜间蟋蟀音效。

触摸太阳精灵（类）有它自己的 ALuint 参考我可以开始。但我想要的是在触摸天空精灵时停止它。

在同一个 PollitosLayer.m 中触摸简单的 NON-CLASS 天空精灵时，有没有办法引用 Sun 类的 ALuint？

我的代码摘录如下。

#import "Sun.h"
#import "PollitosLayer.h"


@implementation Sun


@synthesize sunAnim;
@synthesize settingAnim;

-(void) dealloc {


}

-(void)playSunSound {

    sunSound = PLAYSOUNDEFFECT(SUN_SPIN);

}


-(void)changeState:(CharacterStates)newState {


    [self stopAllActions];

    id action = nil;
characterState = newState;

    switch (newState) {
        case kStateGlowing:


            CCLOG(@"Sun->Changing State to glowing");
            [self setDisplayFrame:
             [[CCSpriteFrameCache sharedSpriteFrameCache]
              spriteFrameByName:@"sun_1.png"]];

            action =  [CCSpawn actions:[CCRepeatForever actionWithAction:
                                        [CCAnimate actionWithAnimation:sunAnim]],nil];
           //[self playSunSound];


            break;

        case kStateSetting:
            CCLOG(@"Sun->Changing State to Setting");
            [self setDisplayFrame:
             [[CCSpriteFrameCache sharedSpriteFrameCache]
              spriteFrameByName:@"sun_1.png"]];

            action =   [CCMoveBy actionWithDuration:3.0f
                                           position:CGPointMake(0.0f,-400.0f)];
          [[SimpleAudioEngine sharedEngine] stopEffect:sunSound];



            break;


        default:
            CCLOG(@"Sun -> Unknown CharState %d",
                  characterState);
            break;

    }

    if (action != nil)
        [self runAction:action];

}

#pragma mark -
-(id) init {
    if( (self=[super init]) ) {
        //CGSize screenSize = [[CCDirector sharedDirector] winSize];
                [self initAnimations];

        [[[CCDirector sharedDirector] touchDispatcher]  addTargetedDelegate:self priority:-1 swallowsTouches:YES];

    }
    return self;


}



-(void) cleanup
{
    // Must manually remove this class as touch input receiver!
    [[CCDirector sharedDirector].touchDispatcher removeDelegate:self];

    [super cleanup];
}


#pragma mark -
#pragma mark initAnimations
-(void)initAnimations {


    [self setSunAnim:
     [self loadPlistForAnimationWithName:@"sunAnim"
                            andClassName:NSStringFromClass([self class])]];


}

-(void) update:(ccTime)delta
{



}


-(void) registerWithTouchDispatcher
{
    [[[CCDirector sharedDirector] touchDispatcher]  addTargetedDelegate:self priority:-1 swallowsTouches:YES];
}



-(BOOL) ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
{
    CGPoint touchLocation = [PollitosLayer locationFromTouch:touch];

    // Check if this touch is on the sun's sprite.
    BOOL isTouchHandled = CGRectContainsPoint([self boundingBox], touchLocation);
    if (isTouchHandled)
    {

        [self changeState:kStateGlowing];


        [self runAction:[CCRotateBy actionWithDuration:1.0f angle:360]];

    }

    return isTouchHandled;

}


-(void) ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event {
    [self playSunSound];

}



@end


farm layer below PollitosLayer.m

#import <Foundation/Foundation.h>
#import "cocos2d.h"
#import "Constants.h"
#import "GameManager.h"
#import "PollitosLayer.h"
#import "Pollito.h"
#import "GameObject.h"
#import "Owl.h"
#import "Sun.h"
#import "Chicks.h"
#import "MainScene.h"



@implementation PollitosLayer

@synthesize backbuttonsprite;
@synthesize henNightSprite;
@synthesize henDaySprite;
@synthesize skyDay;
@synthesize skyNight;
@synthesize moon;

ALuint nightcrickets;
ALuint sunSoundLayer;
ALuint sunSound;
ALuint pollitoSound;



+(CGPoint) locationFromTouch:(UITouch*)touch
{
    CGPoint touchLocation = [touch locationInView: [touch view]];
    return [[CCDirector sharedDirector] convertToGL:touchLocation];
}
+(CGPoint) locationFromTouches:(NSSet*)touches
{
    return [self locationFromTouch:[touches anyObject]];
}





-(void)playNightSound {

    nightcrickets = PLAYSOUNDEFFECT(NIGHT_CRICKETS);
}


-(void)playSunSoundLayer {

    sunSoundLayer = PLAYSOUNDEFFECT(SUN_SPIN);
}

-(void)playPollitoSound {

    pollitoSound = PLAYSOUNDEFFECT(POLLITOS_CHIRP);
}




-(id)init {

    self = [super init];
    if (self != nil) {
        CGSize screenSize = [CCDirector sharedDirector].winSize;
        // enable touches
        self.isTouchEnabled = YES;
               srandom(time(NULL)); // Seeds the random number generator

        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
            [[CCSpriteFrameCache sharedSpriteFrameCache]
             addSpriteFramesWithFile:@"sceneatlas1_default.plist"];          // 1
            sceneSpriteBatchNode =
            [CCSpriteBatchNode batchNodeWithFile:@"sceneatlas1_default.png"]; // 2
        } else {
            [[CCSpriteFrameCache sharedSpriteFrameCache]
             addSpriteFramesWithFile:@"sceneatlas1_default.plist"];          // 1
            sceneSpriteBatchNode =
            [CCSpriteBatchNode batchNodeWithFile:@"sceneatlas1_default.png"];// 2
        }

        [self addChild:sceneSpriteBatchNode z:70 tag:100];

        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
            [[CCSpriteFrameCache sharedSpriteFrameCache]
             addSpriteFramesWithFile:@"sunsheet_default.plist"];          // 1
            sunSpriteBatchNode =
            [CCSpriteBatchNode batchNodeWithFile:@"sunsheet_default.png"]; // 2
        } else {
            [[CCSpriteFrameCache sharedSpriteFrameCache]
             addSpriteFramesWithFile:@"sunsheet_default.plist"];          // 1
            sunSpriteBatchNode =
            [CCSpriteBatchNode batchNodeWithFile:@"sunsheet_default.png"];// 2
        }
        [self addChild:sunSpriteBatchNode z:6 tag:101];

        [self createObjectOfType:kSun
         //withHealth:100
                      atLocation:ccp(screenSize.width * 0.18f,
                                     screenSize.height * 0.79f)
                      withZValue:10];

        CCSprite *backgroundImage;
        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
            // Indicates game is running on iPad
            backgroundImage =
            [CCSprite spriteWithFile:@"pollitosbackground.png"];
        } else {
            backgroundImage =
            [CCSprite spriteWithFile:@"pollitosbackground.png"];
        }

        [backgroundImage setPosition:ccp(screenSize.width/2.0f,
                                         screenSize.height/2.0f)];
        [self addChild:backgroundImage z:20 tag:69];
    }

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
        // Indicates game is running on iPad


        skyDay =
        [CCSprite spriteWithFile:@"SkyDay.png"];
    } else {
        skyDay =
        [CCSprite spriteWithFile:@"SkyDay.png"];
    }
    CGSize screenSize = [CCDirector sharedDirector].winSize;
    [skyDay setPosition:ccp(screenSize.width * 0.5f,
                            screenSize.height* 0.75f)];
    [self addChild:skyDay z:0 tag:59]; //skyDay.visible=YES;




    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
        // Indicates game is running on iPad
        skyNight =
        [CCSprite spriteWithFile:@"SkyNight.png"];
    } else {
        skyNight =
        [CCSprite spriteWithFile:@"SkyNight.png"];
    }

    [skyNight setPosition:ccp(screenSize.width * 0.5f,
                              screenSize.height * 0.75f)];
    [self addChild:skyNight z:2 tag:51]; skyNight.visible = NO;



    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
        // Indicates game is running on iPad
        moon =
        [CCSprite spriteWithFile:@"Moon.png"];
    } else {
        moon =
        [CCSprite spriteWithFile:@"Moon.png"];
    }

    [moon setPosition:ccp(screenSize.width * 0.87f,
                          screenSize.height * 0.51f)];
    [self addChild:moon z:5 tag:52];



    backbuttonsprite =[CCSprite spriteWithFile:@"back.png"];
    [backbuttonsprite setPosition:ccp(screenSize.width * 0.88f,
                                      screenSize.height * 0.95f)];

    [self addChild:backbuttonsprite z:75 tag:75];



    henDaySprite =[CCSprite spriteWithFile:@"henDay.png"];
    [henDaySprite setPosition:ccp(screenSize.width * 0.70f,
                                  screenSize.height * 0.37f)];

    [self addChild:henDaySprite z:60 tag:60];

    henNightSprite =[CCSprite spriteWithFile:@"henNight.png"];
    [henNightSprite setPosition:ccp(screenSize.width * 0.70f,
                                    screenSize.height * 0.37f)];

    [self addChild:henNightSprite z:61 tag:61];
    henNightSprite.visible = NO;



    [self createObjectOfType:kPollito

                  atLocation:ccp(screenSize.width * 0.378f,
                                 screenSize.height * 0.13f)
                  withZValue:21];


    [self createObjectOfType:kPollito2

                  atLocation:ccp(screenSize.width * 0.578f,
                                 screenSize.height * 0.18f)
                  withZValue:22];
    [self createObjectOfType:kPollito3
                       atLocation:ccp(screenSize.width * 0.450f,
                                 screenSize.height * 0.20f)
                  withZValue:23];


    [self createObjectOfType:kPollito4

                  atLocation:ccp(screenSize.width * 0.3f,
                                 screenSize.height * 0.43f)
                  withZValue:24];


    [self createObjectOfType:kPollito5

                  atLocation:ccp(screenSize.width * 0.10f,
                                 screenSize.height * 0.27f)
                  withZValue:25];

    [self createObjectOfType:kPollito6

                  atLocation:ccp(screenSize.width * 0.25f,
                                 screenSize.height * 0.19f)
                  withZValue:26];

    [self createObjectOfType:kPollito7

                  atLocation:ccp(screenSize.width * 0.77f,
                                 screenSize.height * 0.12f)
                  withZValue:27];
    [self createObjectOfType:kPollito8

                  atLocation:ccp(screenSize.width * 0.17f,
                                 screenSize.height * 0.42f)
                  withZValue:28];

    [self createObjectOfType:kChicks
               atLocation:ccp(screenSize.width * 0.73f,
                                 screenSize.height * 0.25f)
                  withZValue:75];

    [self createObjectOfType:kOwl

                  atLocation:ccp(screenSize.width * 0.897f,
                                 screenSize.height * 0.727f)
                  withZValue:29];




    return self;
}


#pragma mark -
-(void)createObjectOfType:(GameObjectType)objectType

               atLocation:(CGPoint)spawnLocation
               withZValue:(int)ZValue {

    if (objectType ==  kPollito) {
        CCLOG(@"Creating the Pollito1");
        Pollito *pollito = [[[Pollito alloc] init] initWithSpriteFrameName:@"pollito_1.png"];
        [pollito setPosition:spawnLocation];
        [sceneSpriteBatchNode addChild:pollito z:ZValue tag:1];
        [pollito changeState:kStatePecking1];




    } else if (objectType == kPollito2) {
        CCLOG(@"Creating the Pollito2");
        Pollito *pollito2 = [[[Pollito alloc]init ]initWithSpriteFrameName:@"pollito_1.png"];
        [pollito2 setPosition:spawnLocation];
        [sceneSpriteBatchNode addChild:pollito2 z:ZValue tag:2];
        [pollito2 changeState:kStatePecking2];


    }else if (objectType == kPollito3) {
        CCLOG(@"Creating the Pollito3");
        Pollito *pollito3 = [[[Pollito alloc] init ]initWithSpriteFrameName:@"pollito_1.png"];
        [pollito3 setPosition:spawnLocation];
        [sceneSpriteBatchNode addChild:pollito3 z:ZValue tag:3];
        [pollito3 changeState:kStatePecking3];


    }else if (objectType == kPollito4) {
        CCLOG(@"Creating the Pollito4");
        Pollito *pollito4 = [[[Pollito alloc] init  ]initWithSpriteFrameName:@"pollito_1.png"];
        [pollito4 setPosition:spawnLocation];
        [sceneSpriteBatchNode addChild:pollito4 z:ZValue tag:4];
        [pollito4 changeState:kStatePecking4];
        [pollito4 setScale:0.8f];


    }else if (objectType == kPollito5) {
        CCLOG(@"Creating the Pollito5");
        Pollito *pollito5 = [[[Pollito alloc] init ]initWithSpriteFrameName:@"pollito_1.png"];
        [pollito5 setPosition:spawnLocation];
        [sceneSpriteBatchNode addChild:pollito5 z:ZValue tag:5];
        [pollito5 changeState:kStatePecking5];


    }else if (objectType == kPollito6) {
        CCLOG(@"Creating the Pollito6");
        Pollito *pollito6 = [[[Pollito alloc] init] initWithSpriteFrameName:@"pollito_1.png"];
        [pollito6 setPosition:spawnLocation];
        [sceneSpriteBatchNode addChild:pollito6 z:ZValue tag:6];
        [pollito6 changeState:kStatePecking6];


    }else if (objectType == kPollito7) {
        CCLOG(@"Creating the Pollito7");
        Pollito *pollito7 = [[[Pollito alloc] init ]initWithSpriteFrameName:@"pollito_1.png"];
        [pollito7 setPosition:spawnLocation];
        [sceneSpriteBatchNode addChild:pollito7 z:ZValue tag:7];
        [pollito7 changeState:kStatePecking7];


    }else if (objectType == kPollito8) {
        CCLOG(@"Creating the Pollito8");
        Pollito *pollito8 = [[[Pollito alloc] init] initWithSpriteFrameName:@"pollito_1.png"];
        [pollito8 setPosition:spawnLocation];
        [sceneSpriteBatchNode addChild:pollito8 z:ZValue tag:8];
        [pollito8 changeState:kStatePecking8];
        [pollito8 setScale:0.8f];


    }else if (objectType == kOwl) {
        CCLOG(@"Creating the Owl");
        Owl *owl = [[[Owl alloc] init ]initWithSpriteFrameName:@"owl_1.png"];
        [owl setPosition:spawnLocation];
        [sceneSpriteBatchNode addChild:owl z:ZValue tag:9];

        owl.visible = NO;

    }else if (objectType == kChicks) {
        CCLOG(@"Creating the Chicks");
        Chicks *chicks = [[[Chicks alloc] init] initWithSpriteFrameName:@"PollitosSleeping_1.png"];
        [chicks setPosition:spawnLocation];
        [sceneSpriteBatchNode addChild:chicks z:ZValue tag:11];

        chicks.visible = NO;


    }else if (objectType ==  kSun) {
        CCLOG(@"Here comes the Sun");
        CCSprite *sun = [[[Sun alloc] init ]initWithSpriteFrameName:@"sun_1.png"];
        [sun setPosition:spawnLocation];
        [sunSpriteBatchNode addChild:sun z:ZValue tag:12];
                      }
}

-(void) registerWithTouchDispatcher
{
    [[[CCDirector sharedDirector] touchDispatcher]  addTargetedDelegate:self priority:0 swallowsTouches:NO];
}


-(void) dealloc
{
    CCLOG(@"%@:worked %@", NSStringFromSelector(_cmd), self);
}


-(BOOL) ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
{

    CGSize screenSize = [CCDirector sharedDirector].winSize;


    Chicks *chicks = (Chicks*)[sceneSpriteBatchNode getChildByTag:11];
    Sun *sun = (Sun*)[sunSpriteBatchNode getChildByTag:12];
   Owl *owl = (Owl*)[sceneSpriteBatchNode getChildByTag:9];

    CGPoint touchLocation = [PollitosLayer locationFromTouch:touch];

    // Check if this touch is on the pollito sprite.
   if (CGRectContainsPoint([backbuttonsprite boundingBox], touchLocation))

    {
        STOPSOUNDEFFECT(nightcrickets);
        STOPSOUNDEFFECT(pollitoSound);
        STOPSOUNDEFFECT(sunSound);
        STOPSOUNDEFFECT(sunSoundLayer);




       [[GameManager sharedGameManager] runSceneWithID:kMainScene];



    }


    else if ((CGRectContainsPoint([henDaySprite boundingBox], touchLocation))&&(henNightSprite.visible == NO))


    {
        henDaySprite.visible = NO;
        henNightSprite.visible = YES;
        chicks.visible = YES;
      [chicks changeState:kStateChirping];

    }

    else if ((CGRectContainsPoint([henNightSprite boundingBox], touchLocation))&&(henDaySprite.visible == NO))


    {

        henDaySprite.visible = YES;
        henNightSprite.visible = NO;
       chicks.visible = NO;


    }



   else if ((CGRectContainsPoint([skyDay boundingBox], touchLocation)) && (skyNight.visible == NO))


    {
        skyNight.visible = YES;
       owl.visible = YES;

        CCAction *moveUp = [CCMoveTo actionWithDuration:2.0f
                                               position:CGPointMake(screenSize.width * 0.87f,
                                                                    screenSize.height * 0.91f)];
        [moon runAction:moveUp];
        [[SimpleAudioEngine sharedEngine] stopEffect:sunSoundLayer];
        CCAction *sunDown = [CCMoveTo actionWithDuration:2.0f
                                                position:CGPointMake(screenSize.width * 0.18f,
                                                                     screenSize.height * 0.40f)];
        [sun runAction:sunDown];
        STOPSOUNDEFFECT(sunSound);

        [self playNightSound];
      //[[SimpleAudioEngine sharedEngine] stopEffect:sunSound];
        STOPSOUNDEFFECT(sunSoundLayer);


    }else if (((CGRectContainsPoint([skyNight boundingBox], touchLocation)) &&  (skyNight.visible == YES) )){

        skyNight.visible = NO;
        CCAction *moveAction = [CCMoveTo actionWithDuration:2.0f
                                                   position:CGPointMake(screenSize.width * 0.87f, screenSize.height * 0.57f)];
        [moon runAction:moveAction];
        owl.visible = NO;

        CCAction *sunUp = [CCMoveTo actionWithDuration:2.0f
                                              position:CGPointMake(screenSize.width * 0.18f,
                                                                   screenSize.height * 0.79f)];



        [sun runAction:sunUp];

              STOPSOUNDEFFECT(nightcrickets);


    }


    return YES;
}


-(void) ccTouchMoved:(UITouch *)touches withEvent:(UIEvent *)event{


}

-(void) ccTouchCancelled:(UITouch *)touch withEvent:(UIEvent *)event {

}


-(void) ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event {


}


@end

score 0 · Accepted Answer

非常感谢 Allen S。创建单独的 SkyLayer 并在其中创建属性，然后将这些属性引用为父层内的属性，然后使用您的 onEnter 工作。我现在可以从父层中的其他精灵引用和停止天空元素的音频这是我的 onEnter 代码。

(void)onEnter { [超级 onEnter];

CGSize screenSize = [CCDirector sharedDirector].winSize;

self.skyNight = [CCSprite spriteWithFile:@"SkyNight.png"];

[_skyNight setPosition:ccp(screenSize.width * 0.5f, screenSize.height * 0.75f)]; [self addChild:_skyNight]; _skyNight.visible=NO;

self.currentsky = self.skyDay;

self.skyDay = [CCSprite spriteWithFile:@"SkyDay.png"];

[_skyDay setPosition:ccp(screenSize.width * 0.5f, screenSize.height* 0.75f)]; [self addChild:_skyDay]; _skyDay.visible=YES；

self.Sunspin = [CCSprite spriteWithFile:@"sun_1.png"]; [_Sunspin setPosition:ccp(screenSize.width * 0.18f,screenSize.height* 0.85f)]; [self addChild:_Sunspin];

}

score 0 · Accepted Answer

为简单起见，您可以做的一件事是让农场层拥有两个天空（白天和黑夜），让白天的天空拥有太阳。这样，当您确定被触摸的内容时，您可以查看当前天空的重体（例如太阳）是否被触摸。如果是这样，则停止所有必要的效果并播放太阳效果。如果天空本身被触摸，那么您可以在更改日/夜循环并继续播放下一组音频效果之前停止沉重的身体的音频效果（如果没有播放，则不会做任何事情）。例如：

@intereface FarmLayer()

@property (nonatomic, strong) Sky* day;
@property (nonatomic, strong) Sky* night;
@property (nonatomic, weak) Sky* currentSky;

@end

@implementation FarmLayer

- (void)onEnter
{
    [super onEnter];

    self.day = [...];
    self.night = [...];
    self.currentSky = self.day;

    // Couldn't think of a better name but you get what I mean.
    self.day.skyBody = [Sun ...];

    ...
}


- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    // Pseudo-ish code...

    // if self.currentSky && self.currentSky.skyBody is touched
    //    - Stop all necessary audio effects if playing.
    //    - Play sky body audio.
    // else if self.currentSky is touched
    //    - Stop all necessary audio effects (including self.currentSky.skyBody's audio effect).
    //    - If self.currentSky == self.day then switch to night (and vice versa).
    //    - Play all necessary audio effects for the new sky.
    //    - Make self.currentSky equal to the the new sky.
}

@end

我希望这会有所帮助。这个例子只是一个快速的例子，它假设了很多东西，并不是要复制和粘贴的，但它应该让你知道如何解决你的困境。如果我误解了这个问题，请告诉我。

编辑：

另外我忘了提一下，每个对象都可以有自己的音频文件数组，您可以使用便捷的方法来启动和停止它们。例如，假设您有一个名为 audioEffects 的数组属性：

@interface Sky()

@property (nonatomic, strong) NSMutableArray* audioFileNames;
@property (nonatomic, strong) NSMutableArray* audioIds;

@end


@implementation Sky

- (void)addSoundEffectWithFileName:(NSString *)fileName
{
    if (!fileName)
    {
        // Handle error.
        return;
    }

    if (!self.audioFileNames)
    {
        self.audioFileNames = [NSMutableArray array];
    }

    [self.audioFileNames addObject:fileName];

    if (!self.audioIds)
    {
        self.audioIds = [NSMutableArray array];
    }

    [self.audioIds addObject:@0];
}

- (void)playAllAudioEffects
{
    for (int i = 0; i < [self.audioFileNames count]; i++)
    {
        NSString* audioFile = self.audioFileNames[i];
        ALuint audioId = [[SimpleAudioEngine sharedEngine] playEffect:audioFile];

        self.audioIds[i] = [NSNumber numberWithUnsignedInt:audioId];
    }
}

- (void)stopAllAudioEffects
{
    for (int i = 0; i < [self.audioIds count]; i++)
    {
        ALuint audioId = [self.audioIds[i] unsignedIntegerValue];
        [[SimpleAudioEngine sharedEngine] stopEffect:audioId];
    }
}

@end

ios - Cocos2d 2.0 SimpleAudioEngine 在另一个对象中停止音效

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