axmol/extensions/CCArmature/animation/CCTween.cpp

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


namespace cocos2d { namespace extension { namespace armature {

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)
	, _currentKeyFrame(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();

        _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;

    _currentKeyFrame = NULL;
    _isTweenKeyFrame = false;

    _totalDuration = 0;
    betweenDuration = 0;
    _toIndex = 0;

    setMovementBoneData(movementBoneData);


    if (_movementBoneData->frameList.count() == 1)
    {
        _loopType = SINGLE_FRAME;
        FrameData *_nextKeyFrame = _movementBoneData->getFrameData(0);
        if(durationTo == 0)
        {
            setBetween(_nextKeyFrame, _nextKeyFrame);
        }
        else
        {
            _tweenData->displayIndex = _nextKeyFrame->displayIndex;
            setBetween(_tweenData, _nextKeyFrame);
        }
        _isTweenKeyFrame = true;
        _frameTweenEasing = Linear;
        _rawDuration = _movementBoneData->duration;
        _fromIndex = _toIndex = 0;
    }
    else if (_movementBoneData->frameList.count() > 1)
    {
        if (loop)
        {
            _loopType = ANIMATION_TO_LOOP_BACK;
            _rawDuration = _movementBoneData->duration;
        }
        else
        {
            _loopType = ANIMATION_NO_LOOP;
            _rawDuration = _movementBoneData->duration - 1;
        }

        _durationTween = durationTween * _movementBoneData->scale;

        if (loop && _movementBoneData->delay != 0)
        {
            setBetween(_tweenData, tweenNodeTo(updateFrameData(1 - _movementBoneData->delay), _between));

        }
        else
        {
            FrameData *_nextKeyFrame = _movementBoneData->getFrameData(0);
            setBetween(_tweenData, _nextKeyFrame);
            _isTweenKeyFrame = true;
        }
    }
}

void Tween::updateHandler()
{


    if (_currentPercent >= 1)
    {
        switch(_loopType)
        {
        case SINGLE_FRAME:
        {
            _currentPercent = 1;
            _isComplete = true;
        }
        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;
                break;
            }
            else
            {
                _nextFrameIndex = _durationTween;
                _currentFrame = _currentPercent * _nextFrameIndex;
                _totalDuration = 0;
                betweenDuration = 0;
                _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;
            _toIndex = 0;
        }
        break;
        case ANIMATION_MAX:
        {
            _currentPercent = 1;
            _isComplete = true;
        }
        break;
        default:
        {
            _currentPercent = fmodf(_currentPercent, 1);
            _currentFrame = fmodf(_currentFrame, _nextFrameIndex);

            _totalDuration = 0;
            betweenDuration = 0;
            _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, true);
    }

    if(_frameTweenEasing != TWEEN_EASING_MAX)
    {
        tweenNodeTo(percent);
    }
    else if(_currentKeyFrame)
    {
        tweenNodeTo(0);
    }
}

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

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

    arriveKeyFrame(from);
}


void Tween::arriveKeyFrame(FrameData *keyFrameData)
{
    if(keyFrameData)
    {
        int displayIndex = keyFrameData->displayIndex;

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


        _bone->setZOrder(keyFrameData->zOrder);

        Armature *childAramture = _bone->getChildArmature();

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

        if(keyFrameData->_event.length() != 0)
        {
            _animation->FrameEventSignal.emit(_bone, keyFrameData->_event.c_str());
        }
        // 		if(keyFrameData->_sound.length() != 0)
        // 		{
        // 			//soundManager.dispatchEventWith(Event.SOUND_FRAME, _currentKeyFrame->sound);
        // 		}
    }
}


FrameData *Tween::tweenNodeTo(float percent, FrameData *node)
{

    node = node == NULL ? _tweenData : node;

    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(_between->isUseColorInfo)
    {
        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();
    }

    //    Point p1 = Point(_from->x, _from->y);
    //    Point p2 = Point(100, 0);
    //    Point p3 = Point(200, 400);
    //    Point p4 = Point(_from->x + _between->x, _from->y + _between->y);
    //
    //    Point p = bezierTo(percent, p1, p2, p3, p4);
    //    node->x = p.x;
    //    node->y = p.y;

    return node;
}

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

    float playedTime = (float)_rawDuration * currentPrecent;


    FrameData *from;
    FrameData *to;
    bool isListEnd;

    //! 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();
        do
        {
            betweenDuration = _movementBoneData->getFrameData(_toIndex)->duration;
            _totalDuration += betweenDuration;
            _fromIndex = _toIndex;

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


        isListEnd = _loopType == ANIMATION_MAX && _toIndex == 0;

        if(isListEnd)
        {
            to = from = _movementBoneData->getFrameData(_fromIndex);
        }
        else
        {
            from = _movementBoneData->getFrameData(_fromIndex);
            to = _movementBoneData->getFrameData(_toIndex);
        }

        _frameTweenEasing = from->tweenEasing;

        setBetween(from, to);

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


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

    TweenType tweenType;

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

    return currentPrecent;
}

}}} // namespace cocos2d { namespace extension { namespace armature {