axmol/extensions/CocoStudio/Armature/animation/CCTween.cpp

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

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THE SOFTWARE.
****************************************************************************/


#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()
    : _movementBoneData(NULL)
    , _tweenData(NULL)
    , _from(NULL)
    , _to(NULL)
    , _between(NULL)
    , _bone(NULL)

    , _frameTweenEasing(Linear)
    , _fromIndex(0)
    , _toIndex(0)
    , _animation(NULL)
{

}


Tween::~Tween(void)
{
    CC_SAFE_DELETE( _from );
    CC_SAFE_DELETE( _between );
}


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

        _bone = bone;
        _tweenData = _bone->getTweenData();
        _tweenData->displayIndex = -1;

        _animation = _bone->getArmature() != NULL ? _bone->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);

    _loopType = (AnimationType)loop;

    _totalDuration = 0;
    _betweenDuration = 0;
    _fromIndex = _toIndex = 0;

    bool difMovement = movementBoneData != _movementBoneData;

    setMovementBoneData(movementBoneData);
    _rawDuration = _movementBoneData->duration;

    FrameData *nextKeyFrame = _movementBoneData->getFrameData(0);
    _tweenData->displayIndex = nextKeyFrame->displayIndex;

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

    if (_rawDuration == 0 )
    {
        _loopType = SINGLE_FRAME;
        if(durationTo == 0)
        {
            setBetween(nextKeyFrame, nextKeyFrame);
        }
        else
        {
            setBetween(_tweenData, nextKeyFrame);
        }
        _frameTweenEasing = Linear;
    }
    else if (_movementBoneData->frameList.count() > 1)
    {
        if (loop)
        {
            _loopType = ANIMATION_TO_LOOP_BACK;
        }
        else
        {
            _loopType = ANIMATION_NO_LOOP;
        }

        _durationTween = durationTween * _movementBoneData->scale;

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

    tweenNodeTo(0);
}

void Tween::updateHandler()
{
    if (_currentPercent >= 1)
    {
        switch(_loopType)
        {
        case SINGLE_FRAME:
        {
            _currentPercent = 1;
            _isComplete = true;
            _isPlaying = false;
        }
        break;
        case ANIMATION_NO_LOOP:
        {
            _loopType = ANIMATION_MAX;


            if (_durationTween <= 0)
            {
                _currentPercent = 1;
            }
            else
            {
                _currentPercent = (_currentPercent - 1) * _nextFrameIndex / _durationTween;
            }

            if (_currentPercent >= 1)
            {
                _currentPercent = 1;
                _isComplete = true;
                _isPlaying = false;
                break;
            }
            else
            {
                _nextFrameIndex = _durationTween;
                _currentFrame = _currentPercent * _nextFrameIndex;
                _totalDuration = 0;
                _betweenDuration = 0;
                _fromIndex = _toIndex = 0;
                break;
            }
        }
        break;
        case ANIMATION_TO_LOOP_BACK:
        {
            _loopType = ANIMATION_LOOP_BACK;

            _nextFrameIndex = _durationTween > 0 ? _durationTween : 1;

            if (_movementBoneData->delay != 0)
            {
                //
                _currentFrame = (1 - _movementBoneData->delay) * (float)_nextFrameIndex;
                _currentPercent = _currentFrame / _nextFrameIndex;
            }
            else
            {
                _currentPercent = 0;
                _currentFrame = 0;
            }

            _totalDuration = 0;
            _betweenDuration = 0;
            _fromIndex = _toIndex = 0;
        }
        break;
        case ANIMATION_MAX:
        {
            _currentPercent = 1;
            _isComplete = true;
            _isPlaying = false;
        }
        break;
        default:
        {
            _currentFrame = fmodf(_currentFrame, _nextFrameIndex);

            _totalDuration = 0;
            _betweenDuration = 0;
            _fromIndex = _toIndex = 0;
        }
        break;
        }
    }

    if (_currentPercent < 1 && _loopType <= ANIMATION_TO_LOOP_BACK)
    {
        _currentPercent = sin(_currentPercent * CC_HALF_PI);
    }

    float percent  = _currentPercent;

    if (_loopType > ANIMATION_TO_LOOP_BACK)
    {
        percent = updateFrameData(percent);
    }

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

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

        _from->copy(from);
        _between->subtract(from, to, limit);
    }
    while (0);

    if (!from->isTween)
    {
        _tweenData->copy(from);
        _tweenData->isTween = true;
    }

    arriveKeyFrame(from);
}


void Tween::arriveKeyFrame(FrameData *keyFrameData)
{
    if(keyFrameData)
    {
        DisplayManager *displayManager = _bone->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
        _tweenData->zOrder = keyFrameData->zOrder;
        _bone->updateZOrder();

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

        //! Update child armature's movement
        Armature *childAramture = _bone->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 ? _tweenData : node;

    if (!_from->isTween)
    {
        return _from;
    }

    node->x = _from->x + percent * _between->x;
    node->y = _from->y + percent * _between->y;
    node->scaleX = _from->scaleX + percent * _between->scaleX;
    node->scaleY = _from->scaleY + percent * _between->scaleY;
    node->skewX = _from->skewX + percent * _between->skewX;
    node->skewY = _from->skewY + percent * _between->skewY;

    _bone->setTransformDirty(true);

    if (node && _between->isUseColorInfo)
    {
        tweenColorTo(percent, node);
    }

    return node;
}

void Tween::tweenColorTo(float percent, FrameData *node)
{
    node->a = _from->a + percent * _between->a;
    node->r = _from->r + percent * _between->r;
    node->g = _from->g + percent * _between->g;
    node->b = _from->b + percent * _between->b;
    _bone->updateColor();
}

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

    float playedTime = (float)_rawDuration * currentPercent;


    //! If play to current frame's front or back, then find current frame again
    if (playedTime < _totalDuration || playedTime >= _totalDuration + _betweenDuration)
    {
        /*
         *  Get frame length, if _toIndex >= _length, then set _toIndex to 0, start anew.
         *  _toIndex is next index will play
         */
        int length = _movementBoneData->frameList.count();
        FrameData **frames = (FrameData **)_movementBoneData->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[_fromIndex];
            _totalDuration  = from->frameID;

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

            _fromIndex = _toIndex;
            to = frames[_toIndex];

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

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

        _betweenDuration = to->frameID - from->frameID;

        _frameTweenEasing = from->tweenEasing;

        setBetween(from, to, false);

    }
    currentPercent = _betweenDuration == 0 ? 0 : (playedTime - _totalDuration) / (float)_betweenDuration;


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

    CCTweenType tweenType;

    if ( _frameTweenEasing != TWEEN_EASING_MAX)
    {
        tweenType = (_tweenEasing == TWEEN_EASING_MAX) ? _frameTweenEasing : _tweenEasing;
        if (tweenType != TWEEN_EASING_MAX && tweenType != Linear)
        {
            currentPercent = TweenFunction::tweenTo(0, 1, currentPercent, 1, tweenType);
        }
    }

    return currentPercent;
}

NS_CC_EXT_ARMATURE_END