【乐畅】工作积累 ---- 调节音量大小 (滑动条调节音量大小并保存起来 )-白红宇

【乐畅】工作积累 ---- 调节音量大小 (滑动条调节音量大小并保存起来 )

阅读量：7082 次

发布时间：2019-06-28

本文共 2734 字，大约阅读时间需要 9 分钟。

cocos2dx 的音量的大小的范围是 0.0f　~ 1.0f

1     // 获取音量大小 2     float musicVolume = getMusicVolume(); 3     float effectVolume = getEffectVolume(); 4  5     SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(musicVolume); 6     SimpleAudioEngine::sharedEngine()->setEffectsVolume(effectVolume); 7      8     // 音乐 9     ControlSlider *sliderMusic = ControlSlider::create("Setting/ttttt.png", "Setting/ttttt.png", "Setting/ttdd.png");10     sliderMusic->setPosition( Vec2(pBack->getContentSize().width * 0.6, pBack->getContentSize().height * 0.63));11     // 设置滑动条的范围12     sliderMusic->setMinimumValue(0.0f);13     sliderMusic->setMaximumValue(100.0f);14     // 设置当前滑动条的当前值15     sliderMusic->setValue(musicVolume * 100.0f);16     sliderMusic->addTargetWithActionForControlEvents(this, cccontrol_selector(DialogSetting::changeMusic), Control::EventType::VALUE_CHANGED);17     pBack->addChild(sliderMusic);18 19     // 音效20     ControlSlider *sliderEffect = ControlSlider::create("Setting/ttttt.png", "Setting/ttttt.png", "Setting/ttdd.png");21     sliderEffect->setPosition( Vec2(pBack->getContentSize().width * 0.6, pBack->getContentSize().height * 0.45));22     // 设置滑动条的范围23     sliderEffect->setMinimumValue(0.0f);24     sliderEffect->setMaximumValue(100.0f);25     // 设置当前滑动条的当前值26     sliderEffect->setValue(effectVolume * 100.0f);27     sliderEffect->addTargetWithActionForContro

回调事件

1 void DialogSetting::changeMusic( Ref *pSender, Control::EventType event ) 2 { 3     ControlSlider *target = static_cast
     
      (pSender); 4     float musicVolume = target->getValue() / 100.0f; 5     SimpleAudioEngine::sharedEngine()->setBackgroundMusicVolume(musicVolume); 6     setMusicVolume(musicVolume); 7 } 8  9 void DialogSetting::changeEffect( Ref *pSender, Control::EventType event )10 {11     ControlSlider *target = static_cast
      
       (pSender);12     float effectVolume = target->getValue() / 100.0f;13     SimpleAudioEngine::sharedEngine()->setEffectsVolume(effectVolume);14     setEffectVolume(effectVolume);15 }

存储数据

1 float getMusicVolume() 2 { 3     char buff[32]; 4     sprintf(buff, "%s_MusicVolume", GameName); 5     return GetFloatToXML(buff, 1.0f); 6 } 7  8 void setMusicVolume(float volume) 9 {10     char buff[32];11     sprintf(buff, "%s_MusicVolume", GameName);12     SetFloatToXML(buff, volume);13     SaveFlush;14 }15 16 float getEffectVolume()17 {18     char buff[32];19     sprintf(buff, "%s_EffectVolume", GameName);20     return GetFloatToXML(buff, 1.0f);21 }22 23 void setEffectVolume(float volume)24 {25     char buff[32];26     sprintf(buff, "%s_EffectVolume", GameName);27     SetFloatToXML(buff, volume);28     SaveFlush;29 }

效果