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PONot able to change the background of the scene in cocos2dx android
 

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  1. PONot able to change the background of the scene in cocos2dx android
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    <p>I have started Game Development using cocos2dx. And started with HelloWorld sample game. I am able to run this sample game. But when I try to change the Background Color, I am getting error in </p> <pre><code> **HelloWorldScene.h** The type 'HelloWorld' must implement the inherited pure virtual method 'cocos2d::CCRGBAProtocol::setOpacity' **Changes:** class HelloWorld : public cocos2d::CCLayerColor </code></pre> <p>and also in </p> <pre><code> **HelloWorldScene.cpp** Invalid arguments ' Candidates are: bool initWithColor(const cocos2d::_ccColor4B &amp;, ?, ?) bool initWithColor(const cocos2d::_ccColor4B &amp;) ' **Changes:** CC_BREAK_IF(!CCLayerColor::initWithColor(ccc4(255,255,255,255))); </code></pre> <p>I am new for cocos2dx and also for C++. Is there any thing left to include or what? Please help me to solve this issue. Thank You.</p> <p><strong>EDIT:</strong></p> <p><strong>HelloWorldScene.cpp</strong></p> <pre><code>#include "HelloWorldScene.h" using namespace cocos2d; using namespace CocosDenshion; CCScene* HelloWorld::scene() { CCScene * scene = NULL; do { // 'scene' is an autorelease object //CCScene *scene = CCScene::create(); scene = CCScene::create(); CC_BREAK_IF(!scene); // 'layer' is an autorelease object HelloWorld *layer = HelloWorld::create(); CC_BREAK_IF(!layer); // add layer as a child to scene scene-&gt;addChild(layer); } while (0); // return the scene return scene; } // on "init" you need to initialize your instance bool HelloWorld::init() { bool bRet = false; do { ////////////////////////////// // 1. super init first //if ( !CCLayer::init()) //{ //return false; //} //CC_BREAK_IF(!CCLayer::init()); CC_BREAK_IF(!CCLayerColor::initWithColor(ccc4(255,255,255,255))); ///////////////////////////// // 2. add a menu item with "X" image, which is clicked to quit the program // you may modify it. // add a "close" icon to exit the progress. it's an autorelease object CCMenuItemImage *pCloseItem = CCMenuItemImage::create( "CloseNormal.png", "CloseSelected.png", this, menu_selector(HelloWorld::menuCloseCallback) ); pCloseItem-&gt;setPosition( ccp(CCDirector::sharedDirector()-&gt;getWinSize().width - 20, 20) ); // create menu, it's an autorelease object CCMenu* pMenu = CCMenu::create(pCloseItem, NULL); pMenu-&gt;setPosition( CCPointZero ); this-&gt;addChild(pMenu, 1); ///////////////////////////// // 3. add your codes below... // add a label shows "Hello World" // create and initialize a label CCLabelTTF* pLabel = CCLabelTTF::create("GAME", "Thonburi", 38); // ask director the window size CCSize size = CCDirector::sharedDirector()-&gt;getWinSize(); // position the label on the center of the screen pLabel-&gt;setPosition( ccp(size.width / 2, size.height - 20) ); // add the label as a child to this layer this-&gt;addChild(pLabel, 1); // add "HelloWorld" splash screen" CCSprite* pSprite = CCSprite::create("Untitled1.png"); // position the sprite on the center of the screen pSprite-&gt;setPosition( ccp(size.width/2, size.height/2) ); // add the sprite as a child to this layer this-&gt;addChild(pSprite, 0); CCSprite* player = CCSprite::create("Player.png", CCRectMake(0, 0, 27, 50)); player-&gt;setPosition(ccp(player-&gt;getContentSize().width/2, size.height/2)); this-&gt;addChild(player); bRet = true; } while (0); return bRet; } void HelloWorld::menuCloseCallback(CCObject* pSender) { CCDirector::sharedDirector()-&gt;end(); #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS) exit(0); #endif } </code></pre> <p><strong>HelloWorldScene.h</strong></p> <pre><code>#ifndef __HELLOWORLD_SCENE_H__ #define __HELLOWORLD_SCENE_H__ #include "cocos2d.h" #include "SimpleAudioEngine.h" //class HelloWorld : public cocos2d::CCLayer class HelloWorld : 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 recommand to return the exactly class pointer static cocos2d::CCScene* scene(); // a selector callback void menuCloseCallback(CCObject* pSender); // implement the "static node()" method manually CREATE_FUNC(HelloWorld); }; #endif // __HELLOWORLD_SCENE_H__ </code></pre>
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