Does the app work if you don’t have the sound code?

Yes it works as long as I comment them. 

Could you post the code please

#include "SplashScene.h"
#include "MainMenuScene.h"
#include "Definitions.h"
#include "SimpleAudioEngine.h"

USING_NS_CC;

Scene* SplashScene::createScene()
{
    // 'scene' is an autorelease object
    auto scene = Scene::create();
    
    // 'layer' is an autorelease object
    auto layer = SplashScene::create();

    // add layer as a child to scene
    scene->addChild(layer);

    // return the scene
    return scene;
}

// on "init" you need to initialize your instance
bool SplashScene::init()
{
    //////////////////////////////
    // 1. super init first
    if ( !Layer::init() )
    {
        return false;
    }
    
	//fail to implement
	CocosDenshion::SimpleAudioEngine::getInstance()->preloadEffect("Sounds/Hit.mp3");
	CocosDenshion::SimpleAudioEngine::getInstance()->preloadEffect("Sounds/Point.mp3");
	CocosDenshion::SimpleAudioEngine::getInstance()->preloadEffect("Sounds/Wing.mp3");

    Size visibleSize = Director::getInstance()->getVisibleSize();
    Vec2 origin = Director::getInstance()->getVisibleOrigin();
    
    this->scheduleOnce( schedule_selector( SplashScene::GoToMainMenuScene ), DISPLAY_TIME_SPLASH_SCENE );

    auto backgroundSprite = Sprite::create( "Splash Scene.png" );
    backgroundSprite->setPosition( Point( visibleSize.width / 2 + origin.x, visibleSize.height / 2 + origin.y) );
    
    this->addChild( backgroundSprite );
    
    return true;
}

void SplashScene::GoToMainMenuScene( float dt )
{
    auto scene = MainMenuScene::createScene();
    
    Director::getInstance( )->replaceScene( TransitionFade::create( TRANSITION_TIME, scene ) );
}

Build in success but cannot run it correctly.

The rest is same as the lesson source code.

Have you tried a fresh project and seeing if audio playback works?

No.

But I have tried both HelloWorld project and this Flappy Bird project and none of them worked.

I will try. Hopefully it is not my laptop environment which caused this weird situation.

OK try it out and let us know 

Sorry that I haven’t replied my latest status.

Sadly, my whole new project failed to preload audio files.

So I think it is my problem.

Apology for bothering, my mistake.

Keep us informed of how it goes.

Hi there.

I have changed my platform to windows 7 and this is a brand new computer.

I installed everything including SDK, JDK and so on. Turns out it had no longer crash, but the audio sounds weird.

Check this out.

I checked this issue on Google, and others said that this is caused bacause of not preloading sound. But I did preload it in my SplashScene.cpp, even in my AppDelegate.cpp.

Still did not work.

Which part of the audio sounds weird, the flap?

Yes, the flapping sound is interrupted by another one if I click too fast.

I think it should be “whoo, whoo, whoo”, not “wh...wh...wh...whoo”

Is there any way I can fix it?

Can you show the code for playing the flap sound when clicing the screen.

First I preload my audio files in my SplashScene.cpp

bool SplashScene::init()
{
    //////////////////////////////
    // 1. super init first
    if ( !Layer::init() )
    {
        return false;
    }
    
	//fail to implement
	CocosDenshion::SimpleAudioEngine::getInstance()->preloadEffect("Sounds/Hit.mp3");
	CocosDenshion::SimpleAudioEngine::getInstance()->preloadEffect("Sounds/Point.mp3");
	CocosDenshion::SimpleAudioEngine::getInstance()->preloadEffect("Sounds/Wing.mp3");

....
}

Hit.mp3 and Point.mp3 are good. I think it is because they only trigger once in several seconds, not like Wing.mp3.

So I just paste my Wing.mp3 code below.

in Bird.cpp(I moved it from Bird.h to Bird.cpp)

void Bird::Fly()
{ 
	CocosDenshion::SimpleAudioEngine::getInstance()->playEffect("Sounds/Wing.mp3"); 
	isFalling = false; 
}

That’s all. Do I need to paste the entire code?

How long is the wing.mp3 file?

Less than 1 second.

Do you have a prevention method to not allow the user from tapping the screen multiple times and the bird flying?

Nope. It is simple. 

I wonder if it is because my audio has miliseconds silence in the beginning. If I click too fast, it will keep playing the silence part and sounds like totally silent.

Try removing the silence

This is my original sound wave.

And this is the edited version.

This is what it sounds like.

Still interrupted by fast clicking, but sounds better.

I wonder if there is a way to make the audio uninterrupted, making the sound play the whole media and then play the next.

Well in flappy bird the time it takes to move the bird is the same length of the duration of the flap sound, you could increase the animation time for the bird moving and prevent the user from clicking when the bird is still moving based on a previous tap.

Sounds like a very good method! I will try it.

Thanks!