这次笔者创建了一个带有背景颜色的layer,同时生成了一个Sprite和一个CCLabelTTf,字体显示在Sprite的中心所在。
代码如下:
GameScene.h
- #ifndef __GAMASCENE__H
- #define __GAMASCENE__H
- #include "cocos2d.h"
- class CGameScene : public cocos2d::CCLayerColor
- {
- public:
- // Here's a difference. Method 'init' in cocos2d-x returns bool,instead of returning 'id' in cocos2d-iphone
- virtual bool init();
- // there's no 'id' in cpp,so we recommend returning the class instance pointer
- static cocos2d::CCScene* scene();
- // a selector callback
- // void menuCloseCallback(CCObject* pSender);
- // implement the "static node()" method manually
- CREATE_FUNC(CGameScene);
- };
- #endif // __HELLOWORLD_SCENE_H__
GameScene.cpp文件内容如下:
这样就完成了一个背景层颜色设置。以及两个父子关系的CCNode的相对位置确定
- #include "GameScene.h"
- #include "AppMacros.h"
- USING_NS_CC;
- CCScene* CGameScene::scene() {
- // 'scene' is an autorelease object
- CCScene *scene = CCScene::create();
- // 'layer' is an autorelease object
- CGameScene *layer = CGameScene::create();
- //默示获得视口(可视区域)的大小
- CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();
- //表示可视区域的起点坐标,这在处理相对位置的时候非常有用,确保节点在不同分辨率下的位置一致
- CCPoint origin = CCDirector::sharedDirector()->getVisibleOrigin();
- //将该层设置为屏幕大小
- layer->setContentSize(CCSize(visibleSize.width,visibleSize.height));
- //将该层的起点设置为屏幕原点
- layer->setPosition(origin.x,origin.y);
- // add layer as a child to scene
- scene->addChild(layer);
- // return the scene
- return scene;
- }
- bool CGameScene::init() {
- if (!CCLayerColor::initWithColor(ccc4(0xff,0xff,0xff),200,200))
- {
- return false;
- }
- CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize(); //默示获得视口(可视区域)的大小
- CCPoint origin = CCDirector::sharedDirector()->getVisibleOrigin(); //表示可视区域的起点坐标,确保节点在不同分辨率下的位置一致
- for (int i = 0; i < 20; i++) {
- CCSprite* pSprite = ::CCSprite::create("qiu1.png");
- pSprite->setScale(0.25); // 缩放为原来的1/2
- pSprite->setPosition(
- ccp(visibleSize.width / 2 + origin.x+i*60,visibleSize.height / 2 + origin.y)); //确保该图在屏幕中心
- CCLabelTTF*pLabel = CCLabelTTF::create("4","Arial",TITLE_FONT_SIZE);
- CCSize pSize = pSprite->getContentSize();
- CCPoint pPoint = pSprite->getPosition();
- pLabel->setScale(4);
- pLabel->setPosition(ccp(pSize.width / 2,pSize.height / 2)); //如果想要子节点在父节点的中心,则只是需要获得父节点的尺寸,子节点的位置是父节点的中心即可
- int a = pSprite->getZOrder();
- pLabel->setZOrder(a + 1);
- //设置颜色为粉红
- pLabel->setColor(ccc3(255,192,203));
- pSprite->addChild(pLabel);
- this->addChild(pSprite,0);
- }
- return true;
- }