学步园

个人原创，欢迎转载：http://blog.csdn.net/dawn_moon/article/details/11478885

这个资源加载的loading界面demo是在玩客网做逆转三国的时候随手写的，虽然我在那只待了2个礼拜，但是也算参与了一个商业游戏项目了，学到不少东西。当时使用的cocos2d-x还是1.0版的，我用2.1.2的调试过了。

上图：

好了，很简单，代码有注释

上代码：

#include "HelloWorldScene.h"
#include "SimpleAudioEngine.h"

using namespace cocos2d;
using namespace CocosDenshion;

CCScene* HelloWorld::scene()
{
    // 'scene' is an autorelease object
    CCScene *scene = CCScene::create();
    
    // 'layer' is an autorelease object
    HelloWorld *layer = HelloWorld::create();

    // add layer as a child to scene
    scene->addChild(layer);

    // return the scene
    return scene;
}

// on "init" you need to initialize your instance
bool HelloWorld::init()
{
    //////////////////////////////
    // 1. super init first
    if ( !CCLayer::init() )
    {
        return false;
    }
    
    m_iLoadIdex = 0;

    /////////////////////////////
    // 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->setPosition( ccp(CCDirector::sharedDirector()->getWinSize().width - 20, 20) );

    // create menu, it's an autorelease object
    CCMenu* pMenu = CCMenu::create(pCloseItem, NULL);
    pMenu->setPosition( CCPointZero );
    this->addChild(pMenu, 1);

    /////////////////////////////
    // 3. add your codes below...

    // add a label shows "Hello World"
    // create and initialize a label
    CCLabelTTF* pLabel = CCLabelTTF::create("Hello World", "Thonburi", 34);

    // ask director the window size
    CCSize size = CCDirector::sharedDirector()->getWinSize();

    // position the label on the center of the screen
    pLabel->setPosition( ccp(size.width / 2, size.height - 20) );

    // add the label as a child to this layer
    this->addChild(pLabel, 1);

    // add "HelloWorld" splash screen"
    CCSprite* pSprite = CCSprite::create("HelloWorld.png");

    // position the sprite on the center of the screen
    pSprite->setPosition( ccp(size.width/2, size.height/2) );

    // add the sprite as a child to this layer
    this->addChild(pSprite, 0);
    
    // loading边框
    m_progressFrame = CCSprite::create("loading_fr.png");
    addChild(m_progressFrame,1);
    m_progressFrame->setPosition(ccp(240, 50));
    
    // loading的动作条
    m_progressBar = CCProgressTimer::create(CCSprite::create("loading_bar.png"));
    m_progressBar->setType(kCCProgressTimerTypeBar);
    addChild(m_progressBar);
    m_progressBar->setVisible(true);
    m_progressBar->setPosition(ccp(241, 51));
    // 进度动画运动方向，从左到右
    m_progressBar->setMidpoint(ccp(0, 0));
    // 宽高变化，这里是宽度变化
    m_progressBar->setBarChangeRate(ccp(1, 0));
    m_progressBar->setPercentage(0);
    
    // loading动画，没有逻辑处理，实际情况则注释掉
    CCProgressTo *to = CCProgressTo::create(10, 100);
    m_progressBar->runAction(to);
    
    // 实际的loading逻辑，可以在这里加入
//    scheduleUpdate();
    return true;
}

void HelloWorld::update(float dt)
{
    
    m_iLoadIdex++;
    
    if (m_iLoadIdex <= 50) {
        loadResource(m_iLoadIdex);
        m_progressBar->setPercentage(m_iLoadIdex * 100.0 / 50);
    }
    
    if (m_iLoadIdex >=50) {
        unscheduleUpdate();
    }
}

// 实际的loading逻辑，加载资源可以在这里添加。
// 这里只用了sleep来模拟
void HelloWorld::loadResource(int index)
{
    CCLog("loading ....");
    switch (index) {
        case 0:
            break;
        default:
            sleep(1.0);
            break;
    }
}


void HelloWorld::menuCloseCallback(CCObject* pSender)
{
    CCDirector::sharedDirector()->end();

#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
    exit(0);
#endif
}

东西太简单，还需要上传demo源码么。要的留言