axmol/extensions/CCArmature/animation/CCTween.cpp

/****************************************************************************
Copyright (c) 2013 cocos2d-x.org

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****************************************************************************/


#include "CCTween.h"
#include "CCArmatureAnimation.h"
#include "../CCBone.h"
#include "../CCArmature.h"
#include "../utils/CCUtilMath.h"
#include "../utils/CCTweenFunction.h"


NS_CC_EXT_BEGIN

CCTween *CCTween::create(CCBone *bone)
{
    CCTween *pTween = new CCTween();
    if (pTween && pTween->init(bone))
    {
        pTween->autorelease();
        return pTween;
    }
    CC_SAFE_DELETE(pTween);
    return NULL;

}



CCTween::CCTween()
    : m_pMovementBoneData(NULL)
    , m_pTweenData(NULL)
	, m_pFrom(NULL)
	, m_pTo(NULL)
	, m_pBetween(NULL)
	, m_pCurrentKeyFrame(NULL)
    , m_pBone(NULL)
    
    , m_eFrameTweenEasing(Linear)
    , m_iFromIndex(0)
    , m_iToIndex(0)
    , m_pAnimation(NULL)
{

}


CCTween::~CCTween(void)
{
    CC_SAFE_DELETE( m_pFrom );
    CC_SAFE_DELETE( m_pBetween );
}


bool CCTween::init(CCBone *bone)
{
    bool bRet = false;
    do
    {
        m_pFrom = new CCFrameData();
        m_pBetween = new CCFrameData();

        m_pBone = bone;
        m_pTweenData = m_pBone->getTweenData();

        m_pAnimation = m_pBone->getArmature() != NULL ? m_pBone->getArmature()->getAnimation() : NULL;

        bRet = true;
    }
    while (0);

    return bRet;
}


void CCTween::play(CCMovementBoneData *_movementBoneData, int _durationTo, int _durationTween,  int _loop, int _tweenEasing)
{
    CCProcessBase::play(NULL, _durationTo, _durationTween, _loop, _tweenEasing);

    m_eLoopType = (AnimationType)_loop;

    m_pCurrentKeyFrame = NULL;
    m_bIsTweenKeyFrame = false;

    m_iTotalDuration = 0;
    betweenDuration = 0;
    m_iToIndex = 0;

    setMovementBoneData(_movementBoneData);


    if (m_pMovementBoneData->frameList.count() == 1)
    {
        m_eLoopType = SINGLE_FRAME;
        CCFrameData *_nextKeyFrame = m_pMovementBoneData->getFrameData(0);
        if(_durationTo == 0)
        {
            setBetween(_nextKeyFrame, _nextKeyFrame);
        }
        else
        {
            m_pTweenData->displayIndex = _nextKeyFrame->displayIndex;
            setBetween(m_pTweenData, _nextKeyFrame);
        }
        m_bIsTweenKeyFrame = true;
        m_eFrameTweenEasing = Linear;
        m_iRawDuration = m_pMovementBoneData->duration;
        m_iFromIndex = m_iToIndex = 0;
    }
    else if (m_pMovementBoneData->frameList.count() > 1)
    {
        if (_loop)
        {
            m_eLoopType = ANIMATION_TO_LOOP_BACK;
            m_iRawDuration = m_pMovementBoneData->duration;
        }
        else
        {
            m_eLoopType = ANIMATION_NO_LOOP;
            m_iRawDuration = m_pMovementBoneData->duration - 1;
        }

        m_iDurationTween = _durationTween * m_pMovementBoneData->scale;

        if (_loop && m_pMovementBoneData->delay != 0)
        {
            setBetween(m_pTweenData, tweenNodeTo(updateFrameData(1 - m_pMovementBoneData->delay), m_pBetween));

        }
        else
        {
            CCFrameData *_nextKeyFrame = m_pMovementBoneData->getFrameData(0);
            setBetween(m_pTweenData, _nextKeyFrame);
            m_bIsTweenKeyFrame = true;
        }
    }
}

void CCTween::updateHandler()
{


    if (m_fCurrentPercent >= 1)
    {
        switch(m_eLoopType)
        {
        case SINGLE_FRAME:
        {
            m_fCurrentPercent = 1;
            m_bIsComplete = true;
        }
        break;
        case ANIMATION_NO_LOOP:
        {
            m_eLoopType = ANIMATION_MAX;


            if (m_iDurationTween <= 0)
            {
                m_fCurrentPercent = 1;
            }
            else
            {
                m_fCurrentPercent = (m_fCurrentPercent - 1) * m_iNextFrameIndex / m_iDurationTween;
            }

            if (m_fCurrentPercent >= 1)
            {
                m_fCurrentPercent = 1;
                m_bIsComplete = true;
                break;
            }
            else
            {
                m_iNextFrameIndex = m_iDurationTween;
                m_fCurrentFrame = m_fCurrentPercent * m_iNextFrameIndex;
                m_iTotalDuration = 0;
                betweenDuration = 0;
                m_iToIndex = 0;
                break;
            }
        }
        break;
        case ANIMATION_TO_LOOP_BACK:
        {
            m_eLoopType = ANIMATION_LOOP_BACK;

            m_iNextFrameIndex = m_iDurationTween > 0 ? m_iDurationTween : 1;

            if (m_pMovementBoneData->delay != 0)
            {
                //
                m_fCurrentFrame = (1 - m_pMovementBoneData->delay) * (float)m_iNextFrameIndex;
                m_fCurrentPercent = m_fCurrentFrame / m_iNextFrameIndex;


            }
            else
            {
                m_fCurrentPercent = 0;
                m_fCurrentFrame = 0;
            }

            m_iTotalDuration = 0;
            betweenDuration = 0;
            m_iToIndex = 0;
        }
        break;
        case ANIMATION_MAX:
        {
            m_fCurrentPercent = 1;
            m_bIsComplete = true;
        }
        break;
        default:
        {
            m_fCurrentPercent = fmodf(m_fCurrentPercent, 1);
            m_fCurrentFrame = fmodf(m_fCurrentFrame, m_iNextFrameIndex);

            m_iTotalDuration = 0;
            betweenDuration = 0;
            m_iToIndex = 0;
        }
        break;
        }
    }


    if (m_fCurrentPercent < 1 && m_eLoopType <= ANIMATION_TO_LOOP_BACK)
    {
        m_fCurrentPercent = sin(m_fCurrentPercent * CC_HALF_PI);
    }

    float percent  = m_fCurrentPercent;

    if (m_eLoopType > ANIMATION_TO_LOOP_BACK)
    {
        percent = updateFrameData(percent, true);
    }

    if(m_eFrameTweenEasing != TWEEN_EASING_MAX)
    {
        tweenNodeTo(percent);
    }
    else if(m_pCurrentKeyFrame)
    {
        tweenNodeTo(0);
    }
}

void CCTween::setBetween(CCFrameData *from, CCFrameData *to)
{
    do
    {
        if(to->displayIndex < 0 && from->displayIndex > 0)
        {
            m_pFrom->copy(from);
            m_pBetween->subtract(to, to);
            break;
        }
        else if(from->displayIndex < 0 && to->displayIndex > 0)
        {
            m_pFrom->copy(to);
            m_pBetween->subtract(to, to);
            break;
        }

        m_pFrom->copy(from);
        m_pBetween->subtract(from, to);
    }
    while (0);

    arriveKeyFrame(from);
}


void CCTween::arriveKeyFrame(CCFrameData *keyFrameData)
{
    if(keyFrameData)
    {
        int displayIndex = keyFrameData->displayIndex;

        if (!m_pBone->getDisplayManager()->getForceChangeDisplay())
        {
            m_pBone->getDisplayManager()->changeDisplayByIndex(displayIndex, false);
        }


        m_pBone->setZOrder(keyFrameData->zOrder);

        CCArmature *childAramture = m_pBone->getChildArmature();

        if(childAramture)
        {
            if(keyFrameData->m_strMovement.length() != 0)
            {
                childAramture->getAnimation()->play(keyFrameData->m_strMovement.c_str());
            }
        }

        if(keyFrameData->m_strEvent.length() != 0)
        {
            m_pAnimation->FrameEventSignal.emit(m_pBone, keyFrameData->m_strEvent.c_str());
        }
        // 		if(keyFrameData->m_strSound.length() != 0)
        // 		{
        // 			//soundManager.dispatchEventWith(Event.SOUND_FRAME, m_pCurrentKeyFrame->sound);
        // 		}
    }
}


CCFrameData *CCTween::tweenNodeTo(float percent, CCFrameData *node)
{
    node = node == NULL ? m_pTweenData : node;

    node->x = m_pFrom->x + percent * m_pBetween->x;
    node->y = m_pFrom->y + percent * m_pBetween->y;
    node->scaleX = m_pFrom->scaleX + percent * m_pBetween->scaleX;
    node->scaleY = m_pFrom->scaleY + percent * m_pBetween->scaleY;
    node->skewX = m_pFrom->skewX + percent * m_pBetween->skewX;
    node->skewY = m_pFrom->skewY + percent * m_pBetween->skewY;

    m_pBone->setTransformDirty(true);

    if(m_pBetween->isUseColorInfo)
    {
        node->a = m_pFrom->a + percent * m_pBetween->a;
        node->r = m_pFrom->r + percent * m_pBetween->r;
        node->g = m_pFrom->g + percent * m_pBetween->g;
        node->b = m_pFrom->b + percent * m_pBetween->b;
        m_pBone->updateColor();
    }

    //    CCPoint p1 = ccp(m_pFrom->x, m_pFrom->y);
    //    CCPoint p2 = ccp(100, 0);
    //    CCPoint p3 = ccp(200, 400);
    //    CCPoint p4 = ccp(m_pFrom->x + m_pBetween->x, m_pFrom->y + m_pBetween->y);
    //
    //    CCPoint p = bezierTo(percent, p1, p2, p3, p4);
    //    node->x = p.x;
    //    node->y = p.y;

    return node;
}

float CCTween::updateFrameData(float currentPrecent, bool activeFrame)
{

    float playedTime = (float)m_iRawDuration * currentPrecent;


    CCFrameData *from;
    CCFrameData *to;
    bool isListEnd;

    //! If play to current frame's front or back, then find current frame again
    if (playedTime >= m_iTotalDuration || playedTime < m_iTotalDuration - betweenDuration)
    {
        /*
         *  Get frame length, if m_iToIndex >= _length, then set m_iToIndex to 0, start anew.
         *  m_iToIndex is next index will play
         */
        int length = m_pMovementBoneData->frameList.count();
        do
        {
            betweenDuration = m_pMovementBoneData->getFrameData(m_iToIndex)->duration;
            m_iTotalDuration += betweenDuration;
            m_iFromIndex = m_iToIndex;

            if (++m_iToIndex >= length)
            {
                m_iToIndex = 0;
            }
        }
        while (playedTime >= m_iTotalDuration);


        isListEnd = m_eLoopType == ANIMATION_MAX && m_iToIndex == 0;

        if(isListEnd)
        {
            to = from = m_pMovementBoneData->getFrameData(m_iFromIndex);
        }
        else
        {
            from = m_pMovementBoneData->getFrameData(m_iFromIndex);
            to = m_pMovementBoneData->getFrameData(m_iToIndex);
        }

        m_eFrameTweenEasing = from->tweenEasing;

        setBetween(from, to);

    }
    currentPrecent = 1 - (m_iTotalDuration - playedTime) / (float)betweenDuration;


    /*
     *  If frame tween easing equal to TWEEN_EASING_MAX, then it will not do tween.
     */

    CCTweenType tweenType;

    if ( m_eFrameTweenEasing != TWEEN_EASING_MAX)
    {
        tweenType = (m_eTweenEasing == TWEEN_EASING_MAX) ? m_eFrameTweenEasing : m_eTweenEasing;
        if (tweenType != TWEEN_EASING_MAX)
        {
            currentPrecent = CCTweenFunction::tweenTo(0, 1, currentPrecent, 1, tweenType);
        }
    }

    return currentPrecent;
}

NS_CC_EXT_END