cocos2d-x教程5 声音的实现

HelloWorldScene.h

#ifndef __HELLOWORLD_SCENE_H__

#define __HELLOWORLD_SCENE_H__

#include "cocos2d.h"

#include "SimpleAudioEngine.h"

class HelloWorld : public cocos2d::CCLayer

{

public:

// Method 'init' in cocos2d-x returns bool, instead of 'id' in cocos2d-iphone (an object pointer)

virtual bool init();

// there's no 'id' in cpp, so we recommend to return the class instance pointer

static cocos2d::CCScene* scene();

// a selector callback

void menuCloseCallback(CCObject* pSender);

// preprocessor macro for "static create()" constructor ( node() deprecated )

CREATE_FUNC(HelloWorld);

unsigned int nSoundId;//音效id

};

#endif // __HELLOWORLD_SCENE_H__

HelloWorldScene.cpp

#include "HelloWorldScene.h"

#include "SimpleAudioEngine.h"

using namespace cocos2d;

using namespace CocosDenshion;

CCScene* HelloWorld::scene()

{

// 'scene' is an autorelease object

CCScene *scene = CCScene::create();

// 'layer' is an autorelease object

HelloWorld *layer = HelloWorld::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 HelloWorld::init()

{

//

// 1. super init first

if ( !CCLayer::init() )

{

return false;

}

//预价值背景音乐

SimpleAudioEngine::sharedEngine()->preloadBackgroundMusic("地上.mp3");

//预价值背景音乐

SimpleAudioEngine::sharedEngine()->preloadEffect("加一条命.mp3");

SimpleAudioEngine::sharedEngine()->preloadEffect("吃到蘑菇或花.mp3");

CCMenuItemLabel* playBg =CCMenuItemFont::create("播放背景音乐", this, menu_selector(HelloWorld::menuCloseCallback));

playBg->setTag(1);

CCMenuItemLabel* stopBg =CCMenuItemFont::create("停止背景音乐", this, menu_selector(HelloWorld::menuCloseCallback));

stopBg->setTag(2);

CCMenuItemLabel* pauseBg =CCMenuItemFont::create("暂停背景音乐", this, menu_selector(HelloWorld::menuCloseCallback));

pauseBg->setTag(3);

CCMenuItemLabel* resumeBg =CCMenuItemFont::create("恢复背景音乐", this, menu_selector(HelloWorld::menuCloseCallback));

resumeBg->setTag(4);

CCMenuItemLabel* rewindBg =CCMenuItemFont::create("重头播放背景音乐", this, menu_selector(HelloWorld::menuCloseCallback));

rewindBg->setTag(5);

CCMenuItemLabel* jiaBg =CCMenuItemFont::create("背景音乐：加", this, menu_selector(HelloWorld::menuCloseCallback));

jiaBg->setTag(6);

CCMenuItemLabel* jianBg =CCMenuItemFont::create("背景音乐：减", this, menu_selector(HelloWorld::menuCloseCallback));

jianBg->setTag(7);

CCMenu* leftMenu = CCMenu::create(playBg,stopBg,pauseBg,resumeBg,rewindBg,jiaBg,jianBg,NULL);

leftMenu->alignItemsVerticallyWithPadding(5);

leftMenu->setPositionX(CCDirector::sharedDirector()->getWinSize().width/4);

this->addChild(leftMenu);

CCMenuItemLabel* playEffect =CCMenuItemFont::create("播放音效1", this, menu_selector(HelloWorld::menuCloseCallback));

playEffect->setTag(10);

CCMenuItemLabel* stopEffect =CCMenuItemFont::create("停止音效1", this, menu_selector(HelloWorld::menuCloseCallback));

stopEffect->setTag(11);

CCMenuItemLabel* pauseEffect =CCMenuItemFont::create("暂停音效1", this, menu_selector(HelloWorld::menuCloseCallback));

pauseEffect->setTag(12);

CCMenuItemLabel* resumeEffect =CCMenuItemFont::create("恢复音效1", this, menu_selector(HelloWorld::menuCloseCallback));

resumeEffect->setTag(13);

CCMenuItemLabel* unloadEffect =CCMenuItemFont::create("从缓存移除音效1", this, menu_selector(HelloWorld::menuCloseCallback));

unloadEffect->setTag(14);

CCMenuItemLabel* playEffect2 =CCMenuItemFont::create("播放音效2", this, menu_selector(HelloWorld::menuCloseCallback));

playEffect2->setTag(15);

CCMenuItemLabel* stopALLEffect =CCMenuItemFont::create("停止所有音效", this, menu_selector(HelloWorld::menuCloseCallback));

stopALLEffect->setTag(16);

CCMenuItemLabel* pauseAllEffect =CCMenuItemFont::create("暂停所有音效", this, menu_selector(HelloWorld::menuCloseCallback));

pauseAllEffect->setTag(17);

CCMenuItemLabel* resumeALLEffect =CCMenuItemFont::create("恢复所有音效", this, menu_selector(HelloWorld::menuCloseCallback));

resumeALLEffect->setTag(18);

CCMenu* rightMenu = CCMenu::create(playEffect,stopEffect,pauseEffect,resumeEffect,unloadEffect,playEffect2,stopALLEffect,pauseAllEffect,resumeALLEffect,NULL);

rightMenu->alignItemsVerticallyWithPadding(5);

rightMenu->setPositionX(CCDirector::sharedDirector()->getWinSize().width * 3/4);

this->addChild(rightMenu);

return true;

}

void HelloWorld::menuCloseCallback(CCObject* pSender)

{

CCNode* tagNode = (CCNode*) pSender;

int tag = tagNode->getTag();

switch (tag) {

case 1:

//播放背景音乐 一个参数默认不循环

SimpleAudioEngine::sharedEngine()->playBackgroundMusic("地上.mp3");

break;

case 2:

//停止背景音乐

SimpleAudioEngine::sharedEngine()->stopBackgroundMusic();

break;

case 3:

//暂停背景音乐

SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();

break;

case 4:

//恢复背景音乐

SimpleAudioEngine::sharedEngine()->resumeBackgroundMusic();

break;

case 5:

//重头播放背景音乐

SimpleAudioEngine::sharedEngine()->rewindBackgroundMusic();

break;

case 6:

//背景音乐:加

SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(

SimpleAudioEngine::sharedEngine()->getBackgroundMusicVolume()+0.1f);

break;

case 7:

//背景音乐：减

SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(

SimpleAudioEngine::sharedEngine()->getBackgroundMusicVolume()-0.1f);

break;

case 10:

//播放音效1 循环

nSoundId = SimpleAudioEngine::sharedEngine()->playEffect("吃到蘑菇或花.mp3", true);

break;

case 11:

//停止音效1

SimpleAudioEngine::sharedEngine()->stopEffect(nSoundId);

break;

case 12:

//暂停音效1

SimpleAudioEngine::sharedEngine()->pauseEffect(nSoundId);

break;

case 13:

//恢复音效1

SimpleAudioEngine::sharedEngine()->resumeEffect(nSoundId);

break;

case 14:

//从缓存移除音效1

SimpleAudioEngine::sharedEngine()->unloadEffect("吃到蘑菇或花.mp3");

break;

case 15:

//播放音效2

nSoundId = SimpleAudioEngine::sharedEngine()->playEffect("加一条命.mp3"); break;

case 16:

//停止所有音效

SimpleAudioEngine::sharedEngine()->stopAllEffects();

break;

case 17:

//暂停所有音效

SimpleAudioEngine::sharedEngine()->pauseAllEffects();

break;

case 18:

//恢复所有音效

SimpleAudioEngine::sharedEngine()->resumeAllEffects();

break;

default:

break;

}

}