axmol/extensions/CocoStudio/Armature/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"
#include "../utils/CCTransformHelp.h"


NS_CC_EXT_ARMATURE_BEGIN

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

}



Tween::Tween()
    : m_pMovementBoneData(NULL)
    , m_pTweenData(NULL)
    , m_pFrom(NULL)
    , m_pTo(NULL)
    , m_pBetween(NULL)
    , m_pBone(NULL)

    , m_eFrameTweenEasing(Linear)
    , m_iFromIndex(0)
    , m_iToIndex(0)
    , m_pAnimation(NULL)
{

}


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


bool Tween::init(Bone *bone)
{
    bool bRet = false;
    do
    {
        m_pFrom = new FrameData();
        m_pBetween = new FrameData();

        m_pBone = bone;
        m_pTweenData = m_pBone->getTweenData();
        m_pTweenData->displayIndex = -1;

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

        bRet = true;
    }
    while (0);

    return bRet;
}


void Tween::play(MovementBoneData *movementBoneData, int durationTo, int durationTween,  int loop, int tweenEasing)
{
    ProcessBase::play(NULL, durationTo, durationTween, loop, tweenEasing);

    m_eLoopType = (AnimationType)loop;

    m_iTotalDuration = 0;
    m_iBetweenDuration = 0;
    m_iFromIndex = m_iToIndex = 0;

    bool difMovement = movementBoneData != m_pMovementBoneData;

    setMovementBoneData(movementBoneData);
    m_iRawDuration = m_pMovementBoneData->duration;

    FrameData *nextKeyFrame = m_pMovementBoneData->getFrameData(0);
    m_pTweenData->displayIndex = nextKeyFrame->displayIndex;

    if (m_pBone->getArmature()->getArmatureData()->dataVersion >= VERSION_COMBINED)
    {
        TransformHelp::nodeSub(*m_pTweenData, *m_pBone->getBoneData());
        m_pTweenData->scaleX += 1;
        m_pTweenData->scaleY += 1;
    }

    if (m_iRawDuration == 0 )
    {
        m_eLoopType = SINGLE_FRAME;
        if(durationTo == 0)
        {
            setBetween(nextKeyFrame, nextKeyFrame);
        }
        else
        {
            setBetween(m_pTweenData, nextKeyFrame);
        }
        m_eFrameTweenEasing = Linear;
    }
    else if (m_pMovementBoneData->frameList.count() > 1)
    {
        if (loop)
        {
            m_eLoopType = ANIMATION_TO_LOOP_BACK;
        }
        else
        {
            m_eLoopType = ANIMATION_NO_LOOP;
        }

        m_iDurationTween = durationTween * m_pMovementBoneData->scale;

        if (loop && m_pMovementBoneData->delay != 0)
        {
            setBetween(m_pTweenData, tweenNodeTo(updateFrameData(1 - m_pMovementBoneData->delay), m_pBetween));
        }
        else
        {
            if (!difMovement || durationTo == 0)
            {
                setBetween(nextKeyFrame, nextKeyFrame);
            }
            else
            {
                setBetween(m_pTweenData, nextKeyFrame);
            }
        }
    }

    tweenNodeTo(0);
}

void Tween::updateHandler()
{
    if (m_fCurrentPercent >= 1)
    {
        switch(m_eLoopType)
        {
        case SINGLE_FRAME:
        {
            m_fCurrentPercent = 1;
            m_bIsComplete = true;
            m_bIsPlaying = false;
        }
        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;
                m_bIsPlaying = false;
                break;
            }
            else
            {
                m_iNextFrameIndex = m_iDurationTween;
                m_fCurrentFrame = m_fCurrentPercent * m_iNextFrameIndex;
                m_iTotalDuration = 0;
                m_iBetweenDuration = 0;
                m_iFromIndex = 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;
            m_iBetweenDuration = 0;
            m_iFromIndex = m_iToIndex = 0;
        }
        break;
        case ANIMATION_MAX:
        {
            m_fCurrentPercent = 1;
            m_bIsComplete = true;
            m_bIsPlaying = false;
        }
        break;
        default:
        {
            m_fCurrentFrame = fmodf(m_fCurrentFrame, m_iNextFrameIndex);

            m_iTotalDuration = 0;
            m_iBetweenDuration = 0;
            m_iFromIndex = 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);
    }

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

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

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

    arriveKeyFrame(from);
}


void Tween::arriveKeyFrame(FrameData *keyFrameData)
{
    if(keyFrameData)
    {
        DisplayManager *displayManager = m_pBone->getDisplayManager();

        //! Change bone's display
        int displayIndex = keyFrameData->displayIndex;

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

        //! Update bone zorder, bone's zorder is determined by frame zorder and bone zorder
        m_pTweenData->zOrder = keyFrameData->zOrder;
        m_pBone->updateZOrder();

        //! Update blend type
        m_pBone->setBlendType(keyFrameData->blendType);

        //! Update child armature's movement
        Armature *childAramture = m_pBone->getChildArmature();
        if(childAramture)
        {
            if(keyFrameData->strMovement.length() != 0)
            {
                childAramture->getAnimation()->play(keyFrameData->strMovement.c_str());
            }
        }
    }
}

FrameData *Tween::tweenNodeTo(float percent, FrameData *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 (node && m_pBetween->isUseColorInfo)
    {
        tweenColorTo(percent, node);
    }

    return node;
}

void Tween::tweenColorTo(float percent, FrameData *node)
{
    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();
}

float Tween::updateFrameData(float currentPercent)
{
    if (currentPercent > 1 && m_pMovementBoneData->delay != 0)
    {
        currentPercent = fmodf(currentPercent, 1);
    }

    float playedTime = (float)m_iRawDuration * currentPercent;


    //! If play to current frame's front or back, then find current frame again
    if (playedTime < m_iTotalDuration || playedTime >= m_iTotalDuration + m_iBetweenDuration)
    {
        /*
         *  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();
        FrameData **frames = (FrameData **)m_pMovementBoneData->frameList.data->arr;

        FrameData *from = NULL;
        FrameData *to = NULL;

        if (playedTime < frames[0]->frameID)
        {
            from = to = frames[0];
            setBetween(from, to);
            return currentPercent;
        }
        else if(playedTime >= frames[length - 1]->frameID)
        {
            from = to = frames[length - 1];
            setBetween(from, to);
            return currentPercent;
        }


        do
        {
            from = frames[m_iFromIndex];
            m_iTotalDuration  = from->frameID;

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

            m_iFromIndex = m_iToIndex;
            to = frames[m_iToIndex];

            //! Guaranteed to trigger frame event
            if(from->strEvent.length() != 0)
            {
                m_pAnimation->frameEvent(m_pBone, from->strEvent.c_str(), from->frameID, playedTime);
            }

            if (playedTime == from->frameID)
            {
                break;
            }
        }
        while (playedTime < from->frameID || playedTime >= to->frameID);

        m_iBetweenDuration = to->frameID - from->frameID;

        m_eFrameTweenEasing = from->tweenEasing;

        setBetween(from, to);

    }
    currentPercent = m_iBetweenDuration == 0 ? 0 : (playedTime - m_iTotalDuration) / (float)m_iBetweenDuration;


    /*
     *  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 && tweenType != Linear)
        {
            currentPercent = TweenFunction::tweenTo(0, 1, currentPercent, 1, tweenType);
        }
    }

    return currentPercent;
}

NS_CC_EXT_ARMATURE_END