cocos2d-x Tests教程:ActionsTest 详解

文章标签: cocos2d-x,cocos2d-x tests
2014-10-28 0:18:46     32 人阅读    

上次说到,当点击一个menu时,会创建一个新的test,并调用它的runThisTest方法,比如actionTest

void ActionsTestScene::runThisTest()
{
   s_nActionIdx = -1;
   addChild(NextAction());

   CCDirector::sharedDirector()->replaceScene(this);

}
 


每一个test都继承自TestScene,TestScene又继承自CCScene,这里TestScene做了一下初始化工作,在构造函数里设置了屏幕为横屏并调用 CCScene::init()方法来设置场景的大小为窗口大小
,在onEnter方法里创建了一个用于返回到主界面的按钮。
 
addChild(NextAction());中NextAction()方法创建了一个新的layer用于演示action比如ActionManual,注意这里所有的layer都继承自ActionsDemo,ActionsDemo继承自CCLayer。当我们创建ActionManual时,它会首先调用ActionsDemo::onEnter();这里对主界面进行了初始化,初始化了三个sprite、三个menu,两个label。
 
然后回到ActionManual::onEnter(),这里对上述三个sprite进行了缩放,旋转,透明,变化颜色,变化位置的操作。
 下面的都类似,只是action不同 
 

 CCLayer* CreateLayer(int nIndex)

{
   CCLayer * pLayer = NULL;

    switch (nIndex)
   {
    case ACTION_MANUAL_LAYER:
       pLayer = new ActionManual(); break;
    case ACTION_MOVE_LAYER:
       pLayer = new ActionMove(); break;//移动sprite
    case ACTION_SCALE_LAYER:
       pLayer = new ActionScale(); break;//缩放sprite
    case ACTION_ROTATE_LAYER:
       pLayer = new ActionRotate(); break;//旋转sprite
   case ACTION_SKEW_LAYER:
       pLayer = new ActionSkew(); break;//倾斜sprite
   case ACTION_SKEWROTATE_LAYER:
       pLayer = new ActionSkewRotateScale(); break;//m_tamara->removeFromParentAndCleanup(true);这个方法可以从父类中移除自己。还有并发action不是得用CCSpawn吗?难道不需要??


    case ACTION_JUMP_LAYER:
       pLayer = new ActionJump(); break;//actionTo和actionBy的区别:前者是跳到这个坐标点,后者是基于原来的位置跳多少距离,比如actionBy(ccp(0,0))就是在原地跳
    case ACTION_BEZIER_LAYER:、、
       pLayer = new ActionBezier(); break;//贝尔曲线
    case ACTION_BLINK_LAYER:
       pLayer = new ActionBlink(); break;//闪烁
    case ACTION_FADE_LAYER:
       pLayer = new ActionFade(); break;//淡入淡出
    case ACTION_TINT_LAYER:
       pLayer = new ActionTint(); break;//从一种颜色变为另一种
    case ACTION_ANIMATE_LAYER:
       pLayer = new ActionAnimate(); break;//动画
    case ACTION_SEQUENCE_LAYER:
       pLayer = new ActionSequence(); break;//按顺序执行一系列动作
    case ACTION_SEQUENCE2_LAYER:
       pLayer = new ActionSequence2(); break;//action结束可以回调某个方法
    case ACTION_SPAWN_LAYER:
       pLayer = new ActionSpawn(); break;//并发,就是多个动作同时进行
    case ACTION_REVERSE:
       pLayer = new ActionReverse(); break;//执行相反动作
    case ACTION_DELAYTIME_LAYER:
       pLayer = new ActionDelayTime(); break;// CCSequence::actions( move, CCDelayTime::actionWithDuration(2), move, NULL);
CCDelayTime::actionWithDuration(2)可以执行延时

    case ACTION_REPEAT_LAYER:
       pLayer = new ActionRepeat(); break;//
    case ACTION_REPEATEFOREVER_LAYER:
       pLayer = new ActionRepeatForever(); break;//
    case ACTION_ROTATETOREPEATE_LAYER:
       pLayer = new ActionRotateToRepeat(); break;
    case ACTION_ROTATEJERK_LAYER:
       pLayer = new ActionRotateJerk(); break;    
    case ACTION_CALLFUNC_LAYER:
       pLayer = new ActionCallFunc(); break;
    case ACTION_CALLFUNCND_LAYER:
       pLayer = new ActionCallFuncND(); break;
    case ACTION_REVERSESEQUENCE_LAYER:
       pLayer = new ActionReverseSequence(); break;
    case ACTION_REVERSESEQUENCE2_LAYER:
       pLayer = new ActionReverseSequence2(); break;
    case ACTION_ORBIT_LAYER:
       pLayer = new ActionOrbit(); break;//每一个CCNode对象都有一个Camera,默认的位置是锚点?所以我们看到的2D图都是规则的,当我们改变Camera的位置时,就会看到这个CCNode对象的不同形状,不知道这样理解对不对
    case ACTION_FLLOW_LAYER:
       pLayer = new ActionFollow(); break;
    default:
        break;
   }

    return pLayer;
}

 


原文地址:http://www.itmmd.com/201410/70.html
该文章由 萌萌的IT人 整理发布,转载须标明出处。

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