自学教程：C++ Color4B函数代码示例

    void renderIcon(const String &data, uint16_t column, uint16_t row) {        uint32_t xOffset = column * _canvasWidth;        uint32_t yOffset = row * _canvasHeight;        _canvas->save();        _canvas->translate(xOffset / ((float)_canvasWidth / (float)_originalWidth), yOffset / ((float)_canvasHeight / (float)_originalHeight));        Rc<draw::Path> path;        if (data.compare(0, 7, "path://") == 0) {            path = Rc<draw::Path>::create(data.substr(7));        } else {            path = Rc<draw::Path>::create(FilePath(data));        }        if (!path) {            return;        }        path->setFillColor(Color4B(255, 255, 255, 255));        path->drawOn(_canvas);        _canvas->restore();    }

bool GameScene::init(){	if ( !Layer::init() )	{		return false;	}	Size visibleSize = Director::getInstance()->getVisibleSize();	Point origin = Director::getInstance()->getVisibleOrigin();	//设置触摸事件监听	auto touchListener = EventListenerTouchOneByOne::create();	touchListener->onTouchBegan = CC_CALLBACK_2(GameScene::onTouchBegan, this);	touchListener->onTouchEnded = CC_CALLBACK_2(GameScene::onTouchEnded, this);	_eventDispatcher->addEventListenerWithSceneGraphPriority(touchListener, this);	//加入游戏背景	auto layerColorBG = LayerColor::create(Color4B(180, 170, 160, 255));	this->addChild(layerColorBG);	//创建分数	auto cardNumberTitle = LabelTTF::create("SCORE","Consolas",80);	cardNumberTitle->setPosition(Point(visibleSize.width/2 + 340, visibleSize.height/2 + 130));	addChild(cardNumberTitle);	score = 0;	cardNumberTTF = LabelTTF::create("0", "Consolas", 70);	cardNumberTTF->setPosition(Point(visibleSize.width/2 + 340, visibleSize.height/2 - 100));	addChild(cardNumberTTF);	//创建4X4卡片	createCardSprite(visibleSize);	//初始时生成两个2	createCardNumber();	createCardNumber();	return true;}

// on "init" you need to initialize your instancebool MainLoadingScene::init(){    if ( !Scene::init() )    {        return false;    }        LayerColor *layer = LayerColor::create();    layer->initWithColor(Color4B(255, 255, 255, 255), VisibleRect::right().x , VisibleRect::top().y);    layer->setPosition(VisibleRect::center());    layer->setAnchorPoint(Vec2(0.5f, 0.5f));    layer->setIgnoreAnchorPointForPosition(false);    this->addChild(layer, 0);        Sprite *fondo = Sprite::create("fondo.png");    fondo->setPosition(VisibleRect::center());    this->addChild(fondo);        Sprite *sprite = Sprite::create("logo.png");    sprite->setPosition(VisibleRect::center());    this->addChild(sprite);        Label *progress = Label::createWithTTF ("Kargatzen ari da./nMesedez, minutu pare bat itxaron.", "fonts/PT_Sans-Web-Regular.ttf", 10);    progress->setPosition(Vec2(VisibleRect::center().x, VisibleRect::bottom().y + 12));    progress->setAnchorPoint(Vec2(0.5,0.5));    progress->setColor(Color3B(0,0,0));    addChild(progress);        loading = Sprite::create("loading.png");    loading->setPosition(Vec2(VisibleRect::center().x, VisibleRect::bottom().y + progress->getContentSize().height + loading->getContentSize().height / 2));    addChild(loading);        ActionInterval* rotate = RotateBy::create(5.0f, 360.0f);    RepeatForever *repeat = RepeatForever::create(rotate);    loading->runAction(repeat);    	return true;}

MainLayer::MainLayer(){    setTouchEnabled(true);    setTouchMode(Touch::DispatchMode::ONE_BY_ONE);        auto sprite = Sprite::create(s_pathGrossini);        auto layer = LayerColor::create(Color4B(255,255,0,255));    addChild(layer, -1);            addChild(sprite, 0, kTagSprite);    sprite->setPosition( Point(20,150) );        sprite->runAction( JumpTo::create(4, Point(300,48), 100, 4) );        layer->runAction( RepeatForever::create(                                Sequence::create(                                        FadeIn::create(1),                                        FadeOut::create(1),                                        NULL)                      )); }

bool TetrisGameAreaLayer::init(){	LayerColor::initWithColor(Color4B(255, 100, 100, 255));	auto keyListener = EventListenerKeyboard::create();	keyListener->setEnabled(true);	keyListener->onKeyReleased = std::bind(&TetrisGameAreaLayer::onKeyReleased, this, std::placeholders::_1,std::placeholders::_2);	keyListener->onKeyPressed = std::bind(&TetrisGameAreaLayer::onKeyDown, this, std::placeholders::_1, std::placeholders::_2);	_eventDispatcher->addEventListenerWithSceneGraphPriority(keyListener, this);	auto dtor = Director::getInstance();	Size  vSize = dtor->getVisibleSize();	Vec2 org = dtor->getVisibleOrigin();	//left bottom	Vec2 vlb(org.x + KWBorder, org.y + KHBorder);	int areaHeight = vSize.height * KAreaHRationInVisible;	setContentSize(Size(areaHeight / 2 - 2 * KWBorder, areaHeight - 4 * KWBorder));	setAnchorPoint(Vec2(0 ,0));	setPosition(vlb);	initBlockRectSprite();	//schedule(schedule_selector(TetrisGameAreaLayer::onBlockUpdate), 0.0);	scheduleUpdate();	return true;}

// on "init" you need to initialize your instancevoid UILayer::init(cocos2d::Node* parent) {        Layer = this;        auto vis = Director::getInstance()->getOpenGLView()->getVisibleRect();    auto height = vis.size.height - VisibleRect::top().y;        mLayer = LayerColor::create(Color4B(0x1E,0xB5,0xC7,0xFF), VisibleRect::right().x, height);    parent->addChild(mLayer, 1500);        mLayer->setPositionY(VisibleRect::top().y);        TTFConfig config("fonts/Montserra.ttf",15);    mFileNameLabel = Label::createWithTTF(config,"");    mFileNameLabel->setPosition(0,30);    mLayer->addChild(mFileNameLabel);        auto uiLayer = new UIColorEditor();    uiLayer->init(mLayer);    setFileName("untitled");}

// on "init" you need to initialize your instancebool HelloWorld::init(){    if ( !LayerColor::initWithColor(Color4B(255,255,255,255)) )    {        return false;    }        Size visibleSize = Director::getInstance()->getVisibleSize();        //创建精灵    auto player = Sprite::create("Player.png", Rect(0, 0, 27, 40));	player->setPosition(Point(player->getContentSize().width/2, visibleSize.height / 2));	this->addChild(player, 0);        //更新函数    this->schedule(schedule_selector(HelloWorld::gameLogic), 1.0f);    this->scheduleUpdate();        CocosDenshion::SimpleAudioEngine::getInstance()->playBackgroundMusic("background-music-aac.caf");        return true;}

bool FrameLayer::init(){	if (!LayerColor::initWithColor(Color4B(0, 0, 0, 0)))	{		return false;	}	auto l1 = Sprite::create("frame/l.png");	auto l2 = Sprite::create("frame/l.png");	l1->setPosition(45, 360);	this->addChild(l1);	l2->setPosition(1280-45, 360);	this->addChild(l2);	return true;}

void PopupLayer::setPublishLotteryContext(Size size){	//添加转盘	m_turnBg = Sprite::create("LotteryTurn/turn_bg.png");	m_turnBg->setPosition(Vec2(winSize.width / 2, winSize.height / 2));	addChild(m_turnBg);	//添加指针	auto arrNor = Sprite::create("LotteryTurn/turn_arrow.png");	arrNor->setPosition(Vec2(winSize.width / 2, winSize.height * 0.557));	arrNor->setScale(0.5);	addChild(arrNor);	//添加中奖之后的简单界面	awardLayer = LayerColor::create(Color4B(0, 0, 0, 100));	awardLayer->setPosition(Point::ZERO);	awardLayer->setTag(100);	addChild(awardLayer, 10);	awardLayer->setVisible(false);	addPlayersInfo(size);	}

bool HelloWorld::init(){	if (!LayerColor::initWithColor(Color4B(255, 255, 255, 255)))	{		return false;	}	tmap = TMXTiledMap::create("TileMaps/TestDesert.tmx");	this->addChild(tmap, 0, 11);	auto objects = tmap->getObjectGroup("Objects");	ValueMap spawnPoint = objects->getObject("SpawnPoint");	int x = spawnPoint["x"].asInt();	int y = spawnPoint["y"].asInt();	dragonPosition = Vec2(x, y);	this->createDragon();	return true;}

bool PRKitDemoScene::init(){    if(!Layer::init())    {        return false;    }        auto color_bg = LayerColor::create(Color4B(125, 125, 125, 125));    addChild(color_bg);        auto demo_info_label = Label::create(demo_info(), "Helvetica", 25, Size(500, 200), TextHAlignment::LEFT);    this->addChild(demo_info_label);    demo_info_label->setAnchorPoint(Point(0.0f, 1.0f));    demo_info_label->setColor(Color3B(255, 255, 255));    demo_info_label->setPosition(VisibleRect::leftTop() + Point(60, -60));        auto backMenuItem = MenuItemImage::create("backNormal.png", "backSelected.png", CC_CALLBACK_1(PRKitDemoScene::backCallback, this));    auto restartMenuItem = MenuItemImage::create("refreshNormal.png", "refreshSelected.png", CC_CALLBACK_1(PRKitDemoScene::restartCallback, this));        restartMenuItem->setPosition(VisibleRect::rightTop() + Point(-200, -80));    backMenuItem->setPosition(restartMenuItem->getPosition() + Point(90, 0));    auto menu = Menu::create(backMenuItem, restartMenuItem, NULL);    menu->setPosition(Point::ZERO);    this->addChild(menu, 300);        Vector2dVector polygonPoints;    polygonPoints.push_back(Vector2d(100, 100));    polygonPoints.push_back(Vector2d(200, 100));    polygonPoints.push_back(Vector2d(300, 200));    polygonPoints.push_back(Vector2d(400, 300));    polygonPoints.push_back(Vector2d(500, 500));    Texture2D *texture = Director::getInstance()->getTextureCache()->addImage("pattern1.png");    PRFilledPolygon *filledPolygon = PRFilledPolygon::filledPolygonWithPointsAndTexture(polygonPoints, texture);    addChild(filledPolygon);        return true;}

TextLayer::TextLayer(void): BaseTest(){	LayerColor *background = LayerColor::create( Color4B(32,128,32,255) );	this->addChild(background,-20);        _gridNodeTarget = NodeGrid::create();    auto effect = getAction();    _gridNodeTarget->runAction(effect);    addChild(_gridNodeTarget, 0, kTagBackground);        auto bg = Sprite::create(s_back3);    _gridNodeTarget->addChild(bg, 0);//  bg->setAnchorPoint( Vec2::ZERO );    bg->setPosition(VisibleRect::center());    auto grossini = Sprite::create(s_pathSister2);    _gridNodeTarget->addChild(grossini, 1);    grossini->setPosition( Vec2(VisibleRect::left().x+VisibleRect::getVisibleRect().size.width/3,VisibleRect::center().y) );    auto sc = ScaleBy::create(2, 5);    auto sc_back = sc->reverse();    grossini->runAction( RepeatForever::create(Sequence::create(sc, sc_back, NULL) ) );    auto tamara = Sprite::create(s_pathSister1);    _gridNodeTarget->addChild(tamara, 1);    tamara->setPosition( Vec2(VisibleRect::left().x+2*VisibleRect::getVisibleRect().size.width/3,VisibleRect::center().y) );    auto sc2 = ScaleBy::create(2, 5);    auto sc2_back = sc2->reverse();    tamara->runAction( RepeatForever::create(Sequence::create(sc2, sc2_back, NULL)) );        auto label = Label::createWithTTF((effectsList[actionIdx]).c_str(), "fonts/Marker Felt.ttf", 32);        label->setPosition( Vec2(VisibleRect::center().x,VisibleRect::top().y-80) );    addChild(label);    label->setTag( kTagLabel );        schedule( schedule_selector(TextLayer::checkAnim) );}

bool PauseLayer::init(){    if (!Layer::init()) {        return false;    }    const Size &size=Director::getInstance()->getWinSize();        //灰色背景    LayerColor* backLayerColor = LayerColor::create(Color4B(25, 25, 25, 125));    this->addChild(backLayerColor);    // 暂停    MenuItemFont *menuItemPause = MenuItemFont::create("Continue", CC_CALLBACK_1(PauseLayer::menuContinueCallBack, this));    menuItemPause->setPosition(Point(size.width / 2 - 100, size.height / 2));   // 重新开始    MenuItemFont *menuItemRestart = MenuItemFont::create("Restart", CC_CALLBACK_1(PauseLayer::menuRestartCallBack, this));    menuItemRestart->setPosition(Point(size.width / 2 + 100, size.height / 2));    Menu *menu=Menu::create(menuItemPause, menuItemRestart, NULL);    menu->setPosition(Point::ZERO);    this->addChild(menu);//不声明 不定义 ontouchbegan的使用方法//    auto callback = [](Touch * ,Event *)//    {//        return true;//    };//    auto listener = EventListenerTouchOneByOne::create();//    listener->onTouchBegan = callback;//    listener->setSwallowTouches(true);//    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener,this);    EventListenerTouchOneByOne* listener = EventListenerTouchOneByOne::create();    listener->onTouchBegan = CC_CALLBACK_2(PauseLayer::onTouchBegan, this);    listener->setSwallowTouches(true);    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);    return true;}

// on "init" you need to initialize your instancebool HelloWorld::init(){    if ( !LayerColor::initWithColor(Color4B(255,255,255,255)) )    {        return false;    }        /////////////////////////////	auto pMenuItem = MenuItemFont::create("Action", CC_CALLBACK_1(HelloWorld::doAction, this));	pMenuItem->setColor(Color3B::BLACK);	auto pMenu = Menu::create(pMenuItem, nullptr);	pMenu->setPosition(Vec2(240, 50));	this->addChild(pMenu);	pBall = Sprite::create("Images/r1.png");	pBall->setPosition(Vec2(50, 100));	pBall->setScale(0.7f);	this->addChild(pBall);	pMan = Sprite::create("Images/grossini.png");	pMan->setPosition(Vec2(50, 150));	pMan->setScale(0.5f);	this->addChild(pMan);	pWomen1 = Sprite::create("Images/grossinis_sister1.png");	pWomen1->setPosition(Vec2(50, 220));	pWomen1->setScale(0.5f);	this->addChild(pWomen1);	pWomen2 = Sprite::create("Images/grossinis_sister2.png");	pWomen2->setPosition(Vec2(50, 280));	pWomen2->setScale(0.5f);	this->addChild(pWomen2);    return true;}

// on "init" you need to initialize your instancebool Bug914Layer::init(){    // always call "super" init    // Apple recommends to re-assign "self" with the "super" return value    if (BugsTestBaseLayer::init())    {        setTouchEnabled(true);        // ask director the the window size        Size size = Director::getInstance()->getWinSize();        LayerColor *layer;        for( int i=0;i < 5;i++)        {            layer = LayerColor::create(Color4B(i*20, i*20, i*20,255));            layer->setContentSize(Size(i*100, i*100));            layer->setPosition(Point(size.width/2, size.height/2));            layer->setAnchorPoint(Point(0.5f, 0.5f));            layer->ignoreAnchorPointForPosition(false);            addChild(layer, -1-i);        }        // create and initialize a Label        LabelTTF *label = LabelTTF::create("Hello World", "Marker Felt", 64);        MenuItem *item1 = MenuItemFont::create("restart", CC_CALLBACK_1(Bug914Layer::restart, this));        Menu *menu = Menu::create(item1, NULL);        menu->alignItemsVertically();        menu->setPosition(Point(size.width/2, 100));        addChild(menu);        // position the label on the center of the screen        label->setPosition(Point( size.width /2 , size.height/2 ));        // add the label as a child to this Layer        addChild(label);        return true;    }    return false;}

void CardSprite::enemyInit(int numbers, int wight, int height, float CardSpriteX, float CardSpriteY){	number = numbers;	layerColorBG = LayerColor::create(  Color4B(200, 190, 180, 255), wight-15, height-15);	layerColorBG->setPosition(Point(CardSpriteX, CardSpriteY) );	if(number >0 )	{		labTTFCardNumber = LabelTTF::create(__String::createWithFormat("%i", number)->getCString(), "HirakakuProN_WG", 100);		labTTFCardNumber ->setPosition(Point(layerColorBG->getContentSize().width/2, layerColorBG->getContentSize().height/2));		layerColorBG->addChild(labTTFCardNumber);	}	else	{		labTTFCardNumber = LabelTTF::create("", "HirakakuProN_WG", 100);		labTTFCardNumber ->setPosition(Point(layerColorBG->getContentSize().width/2, layerColorBG->getContentSize().height/2));		layerColorBG->addChild(labTTFCardNumber);	}	addChild(layerColorBG);}

bool GDebugLoadScene::init(){    auto size = Director::getInstance()->getWinSize();    auto layer = LayerColor::create(Color4B(255,255,255,255),size.width,size.height);    this->addChild(layer);        this->label_text = Label::createWithSystemFont("", "", 24);    this->label_text->setTextColor(Color4B::BLACK);    this->label_text->setPosition(size.width/3,size.height*0.6);    this->label_text->setAnchorPoint(Vec2(0,0.5));    this->addChild(this->label_text);        this->label_file = Label::createWithSystemFont("", "", 20);    this->label_file->setTextColor(Color4B::BLACK);    this->label_file->setPosition(size.width/2,size.height*0.4);    this->addChild( this->label_file);    this->_num = 0;    this->scheduleOnce(schedule_selector(GDebugLoadScene::loadBase), 0.3);    this->schedule(schedule_selector(GDebugLoadScene::updateLabel), 0.3);        return true;}

bool MainMenuLayer::init(){    if( !CCLayerColor::initWithColor(Color4B(255, 255, 255, 255)) )    {        return false;    }        Size visibleSize = Director::getInstance()->getVisibleSize();    Vec2 origin = Director::getInstance()->getVisibleOrigin();    auto playbuttonItem = MenuItemImage::create("button_play.png", "button_play.png", CC_CALLBACK_1(MainMenuLayer::onMenuPlayButton, this));    auto tutorialbuttonItem = MenuItemImage::create("button_tutorial.png", "button_tutorial.png", CC_CALLBACK_1(MainMenuLayer::onMenuTutorialButton, this));    auto menubuttonItem = MenuItemImage::create("button_menu.png", "button_menu.png", CC_CALLBACK_1(MainMenuLayer::onMenuMenuButton, this));	    auto menu = Menu::create(playbuttonItem, tutorialbuttonItem, menubuttonItem, NULL);    menu->alignItemsVerticallyWithPadding(20);    menu->setPosition(Vec2(origin.x + visibleSize.width/2,                           origin.y + visibleSize.height/2 - playbuttonItem->getContentSize().height/2));    this->addChild(menu, 1);        return true;}

void PBase::initAdsBanner(){    if (m_adsLayer || Common::isAdsRemoved())        return;    Size adsSize = Common::getAdsSize();    Vec2 adsLayerPosHide = Vec2(0, m_visibleRect.getMaxY() + adsSize.height + 5);    m_adsLayer = LayerColor::create(Color4B(110, 110, 110, 125));    m_adsLayer->setContentSize(Size(m_winSize.width, adsSize.height));    m_adsLayer->ignoreAnchorPointForPosition(false);    m_adsLayer->setAnchorPoint(Vec2(0, 1.0f));    m_adsLayer->setPosition(adsLayerPosHide);    m_adsLayerVisible = false;    this->addChild(m_adsLayer, ZORDER_ADS_LAYER);    refreshAdBanner(0);    this->runAction(RepeatForever::create(                        Sequence::createWithTwoActions(                            DelayTime::create(0.2f),                            CallFunc::create(CC_CALLBACK_0(PBase::refreshAdBanner, this, 0.2f)))));}

bool CTextRichBasicTest::init(){    CTextRichTestSceneBase::init();    setTitle("CTextRichBasicTest");    setDescription("a basic text rich widget with a single line");    CTextRich* pTextRich = CTextRich::create();    pTextRich->insertElement("TEXT", "", 20);    pTextRich->insertElement("Rich", "", 45);    pTextRich->insertElement("And", "", 25, Color3B::RED);    pTextRich->insertElement("cocos2d-x", "", 70, Color3B::BLUE);    pTextRich->setPosition(Vec2(960/2, 640/2));    pTextRich->reloadData();    CColorView* pColor = CColorView::create(Color4B(255, 0, 0, 50));    pColor->setContentSize(pTextRich->getContentSize());    pColor->setPosition(Vec2(960/2, 640/2));    m_pWindow->addChild(pColor);    m_pWindow->addChild(pTextRich);    return true;}

void GuideLayer::initGuide(){	//遮罩	auto mask = LayerColor::create(Color4B(255,255,255,200));	//new clippingNode	clippingNode = ClippingNode::create();	addChild(clippingNode);	//clipping config	clippingNode->addChild(mask);	clippingNode->setInverted(true);	clippingNode->setAlphaThreshold(1.0f);		//step	setStep(1);	//touch	auto listener = EventListenerTouchOneByOne::create();	listener->setSwallowTouches(true);// true:不向下传递  false:向下传递	listener->onTouchBegan = CC_CALLBACK_2(GuideLayer::onTouchBegan,this);	Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener,this);}

// on "init" you need to initialize your instancebool HelloWorld::init(){    if ( !Layer::init() )    {        return false;    }	// 创建一个菜单按钮，用于读取文件中的内容	auto* background = LayerColor::create(Color4B(255, 255, 255, 255));	addChild(background);	auto* readLabel = Label::create("read", "Arial", 56);	readLabel->setColor(Color3B(0, 0, 0));	auto* pReadLabel = MenuItemLabel::create(readLabel, this, menu_selector(HelloWorld::readCallback));	auto* buttonReadLabel = Menu::create(pReadLabel, NULL);	buttonReadLabel->setPosition(320, 260);	addChild(buttonReadLabel);	auto* saveLabel = Label::create("save", "Arial", 56);	saveLabel->setColor(Color3B(0, 0, 0));	auto* pSaveLabel = MenuItemLabel::create(saveLabel, this, menu_selector(HelloWorld::saveCallback));	auto* buttonSaveLabel = Menu::create(pSaveLabel, NULL);	buttonSaveLabel->setPosition(320, 100);	addChild(buttonSaveLabel);    return true;}

bool GameLayer::init(){    if( !LayerColor::initWithColor( Color4B(250, 248, 238, 255)) )    {        return false;    }        _visibleSize = Director::getInstance()->getVisibleSize();    _origin = Director::getInstance()->getVisibleOrigin();        auto touchListener = EventListenerTouchOneByOne::create();    touchListener->setSwallowTouches(true);    touchListener->onTouchBegan = CC_CALLBACK_2(GameLayer::onTouchBegan, this);    touchListener->onTouchEnded = CC_CALLBACK_2(GameLayer::onTouchEnded, this);    Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(touchListener, this);        addMapBg();        addScore();        schedule(schedule_selector(GameLayer::updateScore), 0.2f, kRepeatForever, 0);    return true;}

bool GameOver::init(){	if (!Layer::init())	{		return false;	}	_director = Director::getInstance();	Size visibleSize = _director->getVisibleSize();	Vec2 origin = _director->getVisibleOrigin();	_background = LayerColor::create(Color4B(0, 0, 0, 255));	_background->setPosition(Vec2(origin.x + visibleSize.width / 2, origin.y + visibleSize.height / 2));	this->addChild(_background);	auto label = Label::createWithTTF("GAME OVER", "fonts/Marker Felt.ttf", 96);	label->setPosition(Vec2(origin.x + visibleSize.width / 2, origin.y + visibleSize.height / 2));	this->addChild(label, 1);	return true;}

bool NovelLayer::init(){    if (!LayerColor::initWithColor(Color4B(0, 0, 0, 0))) {        return false;    }        Size visibleSize = Director::getInstance()->getVisibleSize();    setContentSize(visibleSize);        // アトラス
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