cocos2d-x 2.X demo学习笔记 2 ----controller源码 主要是滚动菜单的操作

#include "controller.h"

#include "testResource.h"

#include "tests.h"

#define LINE_SPACE          40  //总共有40个test场景

static CCPoint s_tCurPos = CCPointZero;//创建一个点初始位置为0点。全局的。

static TestScene* CreateTestScene(int nIdx)

{

    CCDirector::sharedDirector()->purgeCachedData();//清楚所有缓存数据

    TestScene* pScene = NULL;//设置一个场景，后期所有场景可以用此替换

    switch (nIdx)

    {//选中的是哪个场景，然后创建

    case TEST_ACTIONS:

        pScene = new ActionsTestScene(); break;

    case TEST_TRANSITIONS:

        pScene = new TransitionsTestScene(); break;

     case TEST_PROGRESS_ACTIONS:

         pScene = new ProgressActionsTestScene(); break;

    case TEST_EFFECTS:

        pScene = new EffectTestScene(); break;

    case TEST_CLICK_AND_MOVE:

        pScene = new ClickAndMoveTestScene(); break;

    case TEST_ROTATE_WORLD:

        pScene = new RotateWorldTestScene(); break;

    case TEST_PARTICLE:

        pScene = new ParticleTestScene(); break;

    case TEST_EASE_ACTIONS:

        pScene = new ActionsEaseTestScene(); break;

    case TEST_MOTION_STREAK:

        pScene = new MotionStreakTestScene(); break;

    case TEST_DRAW_PRIMITIVES:

        pScene = new DrawPrimitivesTestScene(); break;

    case TEST_COCOSNODE:

        pScene = new CocosNodeTestScene(); break;

    case TEST_TOUCHES:

        pScene = new PongScene(); break;

    case TEST_MENU:

        pScene = new MenuTestScene(); break;

    case TEST_ACTION_MANAGER:

        pScene = new ActionManagerTestScene(); break;

    case TEST_LAYER:

        pScene = new LayerTestScene(); break;

    case TEST_SCENE:

        pScene = new SceneTestScene(); break;

    case TEST_PARALLAX:

        pScene = new ParallaxTestScene(); break;

    case TEST_TILE_MAP:

        pScene = new TileMapTestScene(); break;

    case TEST_INTERVAL:

        pScene = new IntervalTestScene(); break;

    case TEST_CHIPMUNKACCELTOUCH:

#if (CC_TARGET_PLATFORM != CC_PLATFORM_MARMALADE)

        pScene = new ChipmunkAccelTouchTestScene(); break;

#else

#ifdef MARMALADEUSECHIPMUNK

#if    (MARMALADEUSECHIPMUNK == 1)

        pScene = new ChipmunkAccelTouchTestScene(); 

#endif

        break;

#endif

#endif

    case TEST_LABEL:

        pScene = new AtlasTestScene(); break;

    case TEST_TEXT_INPUT:

        pScene = new TextInputTestScene(); break;

    case TEST_SPRITE:

        pScene = new SpriteTestScene(); break;

    case TEST_SCHEDULER:

        pScene = new SchedulerTestScene(); break;

    case TEST_RENDERTEXTURE:

        pScene = new RenderTextureScene(); break;

    case TEST_TEXTURE2D:

        pScene = new TextureTestScene(); break;

    case TEST_BOX2D:

        pScene = new Box2DTestScene(); break;

    case TEST_BOX2DBED:

        pScene = new Box2dTestBedScene(); break;

    case TEST_EFFECT_ADVANCE:

        pScene = new EffectAdvanceScene(); break;

    case TEST_ACCELEROMRTER:

        pScene = new AccelerometerTestScene(); break;

#if (CC_TARGET_PLATFORM != CC_PLATFORM_BADA)

    case TEST_KEYPAD:

        pScene = new KeypadTestScene(); break;

#endif

    case TEST_COCOSDENSHION:

        pScene = new CocosDenshionTestScene(); break;

    case TEST_PERFORMANCE:

        pScene = new PerformanceTestScene(); break;

    case TEST_ZWOPTEX:

        pScene = new ZwoptexTestScene(); break;

#if (CC_TARGET_PLATFORM != CC_PLATFORM_MARMALADE)

// bada don't support libcurl

#if (CC_TARGET_PLATFORM != CC_PLATFORM_BADA)

    case TEST_CURL:

        pScene = new CurlTestScene(); break;

#endif

#endif

    case TEST_USERDEFAULT:

        pScene = new UserDefaultTestScene(); break;

    case TEST_BUGS:

        pScene = new BugsTestScene(); break;

    case TEST_FONTS:

        pScene = new FontTestScene(); break;

    case TEST_CURRENT_LANGUAGE:

        pScene = new CurrentLanguageTestScene(); break;

#if (CC_TARGET_PLATFORM != CC_PLATFORM_MARMALADE)

    case TEST_TEXTURECACHE: pScene = new TextureCacheTestScene(); break;

#endif

    case TEST_EXTENSIONS:

        {

            pScene = new ExtensionsTestScene();

        }

        break;

    case TEST_SHADER:

        pScene = new ShaderTestScene();

        break;

    case TEST_MUTITOUCH:

        pScene = new MutiTouchTestScene();

        break;

    default:

        break;

    }

    return pScene;

}

TestController::TestController()

: m_tBeginPos(CCPointZero)//开始时预先赋值

{

    // add close menu

    CCMenuItemImage *pCloseItem = CCMenuItemImage::create(s_pPathClose, s_pPathClose, this, menu_selector(TestController::closeCallback) );//用图片创建菜单项，资源全在Resource.h内定义、第一个为点击前，第二个为点击后。

    CCMenu* pMenu =CCMenu::create(pCloseItem, NULL);//以上面的菜单项创建一个菜单

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

    pMenu->setPosition( CCPointZero );//设置菜单点为0

    pCloseItem->setPosition(CCPointMake( s.width - 30, s.height - 30));//在设置点为右上角

    // add menu items for tests

    m_pItemMenu = CCMenu::create();//创建一个空菜单

    for (int i = 0; i < TESTS_COUNT; ++i)//循环着把所有名字都加进菜单

    {

// #if (CC_TARGET_PLATFORM == CC_PLATFORM_MARMALADE)

//         CCLabelBMFont* label = CCLabelBMFont::create(g_aTestNames[i].c_str(),  "fonts/arial16.fnt");

// #else

        CCLabelTTF* label = CCLabelTTF::create(g_aTestNames[i].c_str(), "Arial", 24);

// #endif        

        CCMenuItemLabel* pMenuItem = CCMenuItemLabel::create(label, this, menu_selector(TestController::menuCallback));

        m_pItemMenu->addChild(pMenuItem, i + 10000);//天价菜单时，菜单项的排序

        pMenuItem->setPosition( CCPointMake( s.width / 2, (s.height - (i + 1) * LINE_SPACE) ));//设置菜单项在菜单里的位置位置为中间

    }

    m_pItemMenu->setContentSize(CCSizeMake(s.width, (TESTS_COUNT + 1) * (LINE_SPACE)));//设置菜单内容的寛高

    m_pItemMenu->setPosition(s_tCurPos);//设置菜单位置

    addChild(m_pItemMenu);//添加到布局

    setTouchEnabled(true);//设置接收触控事件

    addChild(pMenu, 1);添加关闭按钮。

}

TestController::~TestController()

{

}

void TestController::menuCallback(CCObject * pSender)

{

    // get the userdata, it's the index of the menu item clicked

    CCMenuItem* pMenuItem = (CCMenuItem *)(pSender);//菜单项

    int nIdx = pMenuItem->getZOrder() - 10000;//获取菜单项的排序

    // create the test scene and run it

    TestScene* pScene = CreateTestScene(nIdx);//调用上边创建新场景

    if (pScene)//场景不为空

    {

        pScene->runThisTest();//运行这个场景

        pScene->release();//释放资源

    }

}

void TestController::closeCallback(CCObject * pSender)//变比程序的回调方法

{

    CCDirector::sharedDirector()->end();

#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)

    exit(0);

#endif

}

void TestController::ccTouchesBegan(CCSet *pTouches, CCEvent *pEvent)

{

    CCSetIterator it = pTouches->begin();//触控对象

    CCTouch* touch = (CCTouch*)(*it);//触控

    m_tBeginPos = touch->getLocation();    //获取触控的位置

}

void TestController::ccTouchesMoved(CCSet *pTouches, CCEvent *pEvent)

{

    CCSetIterator it = pTouches->begin();//移动时

    CCTouch* touch = (CCTouch*)(*it);//触控对象

    CCPoint touchLocation = touch->getLocation();    //获取移动到的位置

    float nMoveY = touchLocation.y - m_tBeginPos.y;//获取移动到的做表单

    CCPoint curPos  = m_pItemMenu->getPosition();//获取当前菜单

    CCPoint nextPos = ccp(curPos.x, curPos.y + nMoveY);;//获取移动了多少高度

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

    if (nextPos.y < 0.0f)//如果移动到最上边就停止

    {

        m_pItemMenu->setPosition(CCPointZero);

        return;

    }

    if (nextPos.y > ((TESTS_COUNT + 1)* LINE_SPACE - winSize.height))//如果移动到最下边

    {

        m_pItemMenu->setPosition(ccp(0, ((TESTS_COUNT + 1)* LINE_SPACE - winSize.height)));

        return;

    }

    m_pItemMenu->setPosition(nextPos);//设置菜单项显示到的项

    m_tBeginPos = touchLocation;//设置触摸到的目前的位置

    s_tCurPos   = nextPos;//存储已经移动到的点
}

这个主要是学习菜单的操作，