在游戏结束过渡时为spritekitgame添加声音

Question

我用精灵套件制作了一款游戏。现在我正在尝试执行一些音效。我设法做了一些音效，但我被困在我必须执行声音的部分，无论何时你输了。所以当物体接触地面时，你就输了。但当这种情况发生时，它会转换到另一个场景。所以我希望在过渡到其他场景之前播放游戏音效。这是我得到的:

Myscene.h

#import <AVFoundation/AVFoundation.h>
@interface MyScene : SKScene<SKPhysicsContactDelegate>
@property (strong, nonatomic) AVAudioPlayer *audioPlayer;
@property (strong, nonatomic) SKAction *catchSound;
@property (strong, nonatomic) SKAction *gameoverSound;

Myscene.m

-(id)initWithSize:(CGSize)size {
if (self = [super initWithSize:size]) {
    self.catchSound = [SKAction playSoundFileNamed:@"166331__lokemon44__mushroom.wav" waitForCompletion:NO];
    self.gameoverSound = [SKAction playSoundFileNamed:@"gameover1.wav" waitForCompletion:NO];
    NSURL *url = [[NSBundle mainBundle] URLForResource:@"select" withExtension:@"wav"];
    NSError *error = nil;
    self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
    if (!self.audioPlayer) {
        NSLog(@"Error creating player: %@", error);
          }

    }
return self;

}

-(void)didBeginContact:(SKPhysicsContact *)contact{
 if ((firstBody.categoryBitMask == monsterCategory) != 0 &&
           (secondBody.categoryBitMask == bottomCategory) != 0)
    {
        [self monster:(SKSpriteNode *) firstBody.node didCollideWithbottomGround:(SKSpriteNode *) secondBody.node];
    }
}

-(void)monster:(SKSpriteNode *)monster didCollideWithbottomGround:(SKSpriteNode *)bottomGround {
    [self.monster runAction:self.gameoverSound];
    [self resetDuration];
    [_monster removeFromParent];
    SKTransition *reveal5 = [SKTransition fadeWithDuration:0.5];
    SKScene * InstructionSceneL = [[GameOverScene alloc] initWithSize:self.size score:player_score];
    InstructionSceneL.scaleMode = SKSceneScaleModeAspectFill;
    [self.view presentScene:InstructionSceneL transition:reveal5];
}

Answer 1

你可以在这里使用补全块。

例如:

定义一个:

typedef void (^CompletionBlock)();

- (void)playSoundWhenMonsterHitsGround:(CompletionBlock)completionBlock
{
    [self.monster runAction:self.gameoverSound];
    completionBlock();
}

在你的-(void)monster:(SKSpriteNode *)monster didCollideWithbottomGround:(SKSpriteNode *)bottomGround:

-(void)monster:(SKSpriteNode *)monster didCollideWithbottomGround:(SKSpriteNode *)bottomGround 
{
    [self resetDuration];
    [_monster removeFromParent];
    [self playSoundWhenMonsterHitsGround:^
    {
        SKTransition *reveal5 = [SKTransition fadeWithDuration:0.5];
        SKScene * InstructionSceneL = [[GameOverScene alloc] initWithSize:self.size score:player_score];
        InstructionSceneL.scaleMode = SKSceneScaleModeAspectFill;
        [self.view presentScene:InstructionSceneL transition:reveal5];
    }];
}

Answer 2

SystemSoundID soundToPlay;
NSString *path  = [[NSBundle mainBundle] pathForResource:@"gameover1" ofType:@"wav"];
NSURL *pathURL = [NSURL fileURLWithPath : path];
AudioServicesCreateSystemSoundID((__bridge CFURLRef) pathURL, &soundToPlay);
//playback
AudioServicesPlaySystemSound(soundToPlay);

Answer 3

SKAction *sound = [SKAction playSoundFileNamed:@"fileName" waitForCompletion:NO];

您可以尝试使用waitForCompletion:，直到它适合您。