cocos2dx Action动作解析(2)

static CCScaleTo* CCScaleTo::create(float duration , float sx , float sy);

    /* 
     * duration是动作执行持续时间，单位为秒;
      
     * sx是X方向的拉伸值（注意，是拉伸值！）;

     * sy是Y方向的拉伸值;
     */

 Static CCScaleBy* CCScaleBy::create(float duration , float sx , float sy);

    /* 
     * duration是动作执行持续时间

     * sx是X方向的拉伸倍数（注意，现在是倍数!);

     * sy是Y方向的拉伸倍数;
     */

//创建精灵 Boss
Boss =CCSprite::create("diji.png");
Boss->setPosition(ccp(320, 1000));//Boss坐标
this->addChild(Boss);

//创建坐标组 并添加坐标
CCPointArray * bosspoints=CCPointArray::create(18);
bosspoints->addControlPoint(ccp(250, 980));
bosspoints->addControlPoint(ccp(350, 800));
bosspoints->addControlPoint(ccp(450, 650));
bosspoints->addControlPoint(ccp(500, 500));
bosspoints->addControlPoint(ccp(450, 350));
bosspoints->addControlPoint(ccp(350, 200));
bosspoints->addControlPoint(ccp(250, 350));
bosspoints->addControlPoint(ccp(150, 500));
bosspoints->addControlPoint(ccp(50, 650));
bosspoints->addControlPoint(ccp(150, 800));
bosspoints->addControlPoint(ccp(250, 980));
bosspoints->addControlPoint(ccp(150, 980));
bosspoints->addControlPoint(ccp(50, 980));
bosspoints->addControlPoint(ccp(150, 980));
bosspoints->addControlPoint(ccp(250, 980));
bosspoints->addControlPoint(ccp(350, 980));
bosspoints->addControlPoint(ccp(450, 980));
bosspoints->addControlPoint(ccp(350, 980));
bosspoints->addControlPoint(ccp(250, 980));

//根据坐标组创建一个轨迹 三个参数是 移动一轮的时间,坐标组,浮张力(惯性)
CCActionInterval * bosslineTo=CCCardinalSplineTo::create(18, bosspoints, 0);

//让boss执行这个行动 CCRepeatForever是一直执行
Boss->runAction(CCRepeatForever::create(bosslineTo));