cocos2d-x学习笔记(4)--CCLayer背景绘制

cocos2d-x学习笔记(4)--CCLayer背景绘制

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step1:创建一个cocos2d-win32 application,并命名为simpleGame

step2:在HelloWorldScene.h中创建新类LayerBlack、LayerBlue和LayerBackground

class LayerBackground:public CCLayerColor {

public:  LayerBackground();

 ~LayerBackground();

public:  virtual void onEnter(); };

 

class LayerCloud:public CCLayerColor {

public:  LayerCloud();    ~LayerCloud();

public:  virtual void onEnter();

};

class LayerHill:public CCLayerColor {

public:  LayerHill();

 ~LayerHill();

public:  virtual void onEnter(); };

 

在HelloWorldScene.cpp中添加如下代码:

/************************************************************************/ /* class LayerCloud                                                                     */ /************************************************************************/ LayerCloud::LayerCloud() {

 

CCSize size = CCDirector::sharedDirector()->getWinSize();

this->initWithColor(ccc4(0,0,0,0));

CCSprite* pSpriteCloud = CCSprite::spriteWithFile("cloud.png");// CC_BREAK_IF(!pSpriteCloud); pSpriteCloud->setPosition(ccp(size.width/2,size.height/2)); addChild(pSpriteCloud);

} LayerCloud::~LayerCloud() {

}

void LayerCloud::onEnter() {  CCLayer::onEnter();

 }

/************************************************************************/ /* class LayerHill                                                                    */ /************************************************************************/

LayerHill::LayerHill() {

 

CCSize size = CCDirector::sharedDirector()->getWinSize();

this->initWithColor(ccc4(0,0,0,0)); CCSprite* pSpriteHill = CCSprite::spriteWithFile("hill.png"); //CC_BREAK_IF(!pSpriteHill); pSpriteHill->setPosition(ccp(size.width/2,size.height/2)); addChild(pSpriteHill);

}

LayerHill::~LayerHill() {

}

void LayerHill::onEnter() {  CCLayer::onEnter();

}

/************************************************************************/ /* class LayerBackground                                                                    */ /************************************************************************/

LayerBackground::LayerBackground () {

CCSize size = CCDirector::sharedDirector()->getWinSize();

CCLabelTTF* label = CCLabelTTF::labelWithString(m_strTitle.c_str(),"Arial", 32); addChild(label);

label->setPosition(ccp(size.width /2, size.height/2));

this->initWithColor(ccc4(255,255,255,255));

 }

LayerBackground ::~LayerBackground () {

}

void LayerBackground ::onEnter() {  CCLayer::onEnter();

 }

修改init()函数:

CCScene* HelloWorld::scene() {     CCScene * scene = NULL;     do     {         // 'scene' is an autorelease object         scene = CCScene::node();         CC_BREAK_IF(! scene);

        // 'layer' is an autorelease object         //HelloWorld *layer = HelloWorld::node();   LayerBackground* playerBack = new LayerBackground();   LayerCloud* playerCloud = new LayerCloud();   LayerHill* playerHill = new LayerHill();

        CC_BREAK_IF(! playerHill);   CC_BREAK_IF(!playerCloud);   CC_BREAK_IF(!playerBack);

        // add layer as a child to scene   //addChild中的第二个参数为背景的次序,LayerHill在LayerCloud的上面,即表面。         scene->addChild(playerHill, 2);   scene->addChild(playerCloud, 1);   scene->addChild(playerBack,0);

    } while (0);

    // return the scene     return scene; }

 

 

由于游戏中一个场景中的背景可能含有很多内容,若将全部内容放在同一个背景下,就会导致管理上的不方便,因此可以通过组合多个背景(Layer)来形成一个画面;来管理一个游戏场景
示意图:

cocos2d-x学习笔记(4)--CCLayer背景绘制_第1张图片cocos2d-x学习笔记(4)--CCLayer背景绘制_第2张图片

通过两个背景的组合

cocos2d-x学习笔记(4)--CCLayer背景绘制_第3张图片

最终得到如下效果

cocos2d-x学习笔记(4)--CCLayer背景绘制_第4张图片

运行程序后会见到如下的画面:

cocos2d-x学习笔记(4)--CCLayer背景绘制_第5张图片

 


 

 

 源代码下载地址:http://download.csdn.net/download/wen294299195/4525792

 

 

 

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