cocos2dx 對全部動作或單個動作速度的改變

一、對全部CCActionInterval動作進行加速或減速,這個很簡單隻要一句代碼就可以。

CCDirector::sharedDirector()->getScheduler()->setTimeScale(2);//以目前2倍速度播放
    CCDirector::sharedDirector()->getScheduler()->setTimeScale(0.5);//以目前0.5倍速度播放

二、對個別單個動作進行加速或減速

有兩種方法

1.通過CCSpeed實現

CCSprite* sprite = CCSprite::create();
    CCActionInterval *jump = CCJumpBy::create(4, ccp(0,0), 100, 4);
    sprite->runAction(CCSpeed::create(jump, 2));//以2倍速度播放動作

2.通過CCActionManager實現，着重講這個方法

CCScheduler* scheduler1;
void HelloWorld::myInit11()
{
    CCSize size = CCDirector::sharedDirector()->getWinSize();

    CCControlSlider* slider1 = CCControlSlider::create("sliderTrack.png", "sliderProgress.png", "sliderThumb.png");
    slider1->setPosition(ccp(size.width/4*2, size.height*0.3));
    this->addChild(slider1);
    slider1->setTag(1);
    //最小值
    slider1->setMinimumValue(0);
    //最大值
    slider1->setMaximumValue(5);
    //回調函數
    slider1->addTargetWithActionForControlEvents(this, cccontrol_selector(HelloWorld::sliderAction), CCControlEventValueChanged);


    // Create a new scheduler, and link it to the main scheduler
    scheduler1 = new CCScheduler();
    CCDirector::sharedDirector()->getScheduler()->scheduleUpdateForTarget(scheduler1, 0, false);

    // Create a new ActionManager, and link it to the new scheudler
    CCActionManager* actionManager1 = new CCActionManager();
    scheduler1->scheduleUpdateForTarget(actionManager1, 0, false);


    //左邊精靈
    CCActionInterval *jump1 = CCJumpBy::create(4, ccp(0,0), 100, 4);
    CCActionInterval *jump2 = jump1->reverse();
    CCSequence* seq = CCSequence::create(jump2, jump1, NULL);
    CCRepeatForever* action = CCRepeatForever::create(seq);

    CCSprite* left = CCSprite::create("Icon.png");
    left->setPosition(ccp(size.width/4*1, size.height*0.5));
    this->addChild(left);
    // IMPORTANT: Set the actionManager running any action
    left->setActionManager(actionManager1);
    left->runAction(action);


    //中間精靈
    CCSprite* middle = CCSprite::create("Icon.png");
    middle->setPosition(ccp(size.width/4*2, size.height*0.5));
    this->addChild(middle);
    middle->setActionManager(actionManager1);
    middle->runAction(CCRepeatForever::create(CCRotateBy::create(2, 360)));


    //右邊精靈
    CCSprite* right = CCSprite::create("Icon.png");
    right->setPosition(ccp(size.width/4*3, size.height*0.5));
    this->addChild(right);
    CCActionInterval* scale1 = CCScaleBy::create(1, 2);
    CCActionInterval* scale2 = scale1->reverse();
    CCSequence* seq2 = CCSequence::create(scale1, scale2, NULL);
    CCRepeatForever* action2 = CCRepeatForever::create(seq2);
    right->setActionManager(actionManager1);
    right->runAction(action2);
}

void HelloWorld::sliderAction(CCObject* pSender, CCControlEvent controlEvent)
{
    CCControlSlider* pSliderCtl = (CCControlSlider*)pSender;
    float value = pSliderCtl->getValue();

    scheduler1->setTimeScale(value);
}

HelloWorld::~HelloWorld()
{
    scheduler1->release();
}