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

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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The above copyright notice and this permission notice shall be included in
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/


#ifndef __CCTWEEN_H__
#define __CCTWEEN_H__

#include "CCProcessBase.h"
#include "../utils/CCTweenFunction.h"

NS_CC_EXT_BEGIN

class CCBone;
class CCArmatureAnimation;

class  CCTween : public CCProcessBase
{
public:
    /**
     * Create with a CCBone
     * @param bone the CCBone CCTween will bind to
     */
    static CCTween *create(CCBone *bone);
public:
    CCTween(void);
    virtual ~CCTween(void);

    /**
     * Init with a CCBone
     * @param bone the CCBone CCTween will bind to
     */
    virtual bool init(CCBone *bone);

    /**
     * Start the Process
     *
     * @param  movementBoneData  the CCMovementBoneData include all frame datas
     * @param  durationTo the frames between two animation changing-over.
     *         It's meaning is changing to this animation need how many frames
     *
     *         -1 : use the value from CCMovementData get from flash design panel
     * @param  durationTween  the frame count you want to play in the game.
     *         if  _durationTween is 80, then the animation will played 80 frames in a loop
     *
     *         -1 : use the value from CCMovementData get from flash design panel
     *
     * @param  loop   whether the animation is loop
     *
     *         loop < 0 : use the value from CCMovementData get from flash design panel
     *         loop = 0 : this animation is not loop
     *         loop > 0 : this animation is loop
     *
     * @param  tweenEasing    tween easing is used for calculate easing effect
     *
     *         TWEEN_EASING_MAX : use the value from CCMovementData get from flash design panel
     *         -1 : fade out
     *         0  : line
     *         1  : fade in
     *         2  : fade in and out
     *
     */
    virtual void play(CCMovementBoneData *movementBoneData, int durationTo, int durationTween,  int loop, int tweenEasing);

protected:

    /**
     * Update(float dt) will call this handler, you can handle your logic here
     */
    virtual void updateHandler();

    /**
     * Calculate which frame arrived, and if current frame have event, then call the event listener
     */
    virtual float updateFrameData(float currentPrecent, bool activeFrame = false);

    /**
     * Calculate the between value of _from and _to, and give it to between frame data
     */
    virtual void setBetween(CCFrameData *from, CCFrameData *to);

    /**
     * According to the percent to calculate current CCFrameData with tween effect
     */
    virtual CCFrameData *tweenNodeTo(float percent, CCFrameData *node = NULL);

    /**
     * Update display index and process the key frame event when arrived a key frame
     */
    virtual void arriveKeyFrame(CCFrameData *keyFrameData);
protected:
    //! A weak reference to the current CCMovementBoneData. The data is in the data pool
    CC_SYNTHESIZE(CCMovementBoneData *, m_pMovementBoneData, MovementBoneData)

    CCFrameData *m_pTweenData;		//! The computational tween frame data, //! A weak reference to the CCBone's tweenData
    CCFrameData *m_pFrom;				//! From frame data, used for calculate between value
    CCFrameData *m_pTo;				//! To frame data, used for calculate between value
    CCFrameData *m_pBetween;			//! Between frame data, used for calculate current CCFrameData(m_pNode) value

    CCFrameData *m_pCurrentKeyFrame;	//! A weak reference to the current CCFrameData. The data is in the data pool

    CCBone *m_pBone;					//! A weak reference to the CCBone

    CCTweenType m_eFrameTweenEasing;	//! Dedermine which tween effect current frame use

    bool m_bIsTweenKeyFrame;

    int betweenDuration;			//! Current key frame will last betweenDuration frames
    int m_iTotalDuration;


    int m_iFromIndex;				//! The current frame index in FrameList of CCMovementBoneData, it's different from m_iFrameIndex
    int m_iToIndex;					//! The next frame index in FrameList of CCMovementBoneData, it's different from m_iFrameIndex

    CCArmatureAnimation *m_pAnimation;
};

NS_CC_EXT_END

#endif /*__CCTWEEN_H__*/