背景クロスフェード(0.2sec)

CrossFade.cpp

void MenuState_PlayPerformance::playCharacter() {
  replaceImage( (Sprite*)mScene->getContentsSprite()->getChildByName("background"), "bg2.png" );
}

void MenuState_PlayPerformance::replaceImage(cocos2d::Sprite* sprite, const char* imageFileName) {
  sprite->setTexture( Director::getInstance()->getTextureCache()->addImage( imageFileName ) );
  Texture2D *tex = Director::getInstance()->getTextureCache()->addImage( imageFileName );
  sprite->setTexture( tex );
  Size contentSize = tex->getContentSize();
  sprite->setTextureRect( Rect(0, 0, contentSize.width, contentSize.height) );

  sprite->runAction( FadeIn::create(0.2f) );
}