cocos02:播放声音
游戏中来说声音有两种情况，一种是游戏的背景音，这种音乐时间较长。另一种就是类似怪物发出的声音，这种声音时间较短。这两种播放音乐的方式代码是不同的。
第一种：
先在.h文件中定义
class HelloWorld : public cocos2d::Layer
{
public:
bool is_paused;
// there's no 'id' in cpp, so we recommend returning the class instance pointer
static cocos2d::Scene* createScene();
// Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone
virtual bool init();
void play(cocos2d::Object*pSender);//播放
void stop(cocos2d::Object*pSender);//停止
void pause(cocos2d::Object*pSender);//暂停
// implement the "static create()" method manually
CREATE_FUNC(HelloWorld);
};
然后进入.cpp文件
先导入#include "SimpleAudioEngine.h"
is_paused = false;
//开始
auto* label_play = Label::create("play","Arial",40);
auto *pLabel_play = MenuItemLabel::create(label_play, this, menu_selector(HelloWorld::play));
auto *button_play = Menu::create(pLabel_play, NULL);
button_play->setPosition(160, 180);
addChild(button_play);
//暂停
auto *label_pause = Label::create("pause", "Arial", 40);
auto *pLaebl_pause = MenuItemLabel::create(label_pause, this, menu_selector(HelloWorld::pause));
auto *button_pause = Menu::create(pLaebl_pause, NULL);
button_pause->setPosition(320,180);
addChild(button_pause);
//停止
auto *label_stop = Label::create("stop", "Arial", 40);
auto *pLabel_stop = MenuItemLabel::create(label_stop, this, menu_selector(HelloWorld::stop));
auto *button_stop = Menu::create(pLabel_stop, NULL);
button_stop->setPosition(480, 180);
addChild(button_stop);
之后编写方法
void HelloWorld::play(cocos2d::Object* pSender)
{
if (is_paused)
{
CocosDenshion::SimpleAudioEngine::sharedEngine()->resumeBackgroundMusic();
}
else
{
CocosDenshion::SimpleAudioEngine::sharedEngine()->playBackgroundMusic("music.mp3");
}
is_paused = false;
}
void HelloWorld::pause(cocos2d::Object* pSender)
{
is_paused = false;
CocosDenshion::SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic();
}
void HelloWorld::stop(cocos2d::Object* pSender)
{
is_paused = false;
CocosDenshion::SimpleAudioEngine::sharedEngine()->stopBackgroundMusic();
}
然后比较短的声音只需要把palyBackgroundMusic改成playEffect就可以了。我看书上还有一个钢琴的例子。。。先去吃饭。。耶
