CCActionTween

#ifndef __CCACTIONTWEEN_H__

#define __CCACTIONTWEEN_H__

#include "CCActionInterval.h"

NS_CC_BEGIN

/**

 * @addtogroup actions

 * @{

 */

class CC_DLL CCActionTweenDelegate

{

public:

    virtual ~CCActionTweenDelegate() {}

    virtual void updateTweenAction(float value, const char* key) = 0;

};

/** CCActionTween

 CCActionTween is an action that lets you update any property of an object.

 For example, if you want to modify the "width" property of a target from 200 to 300 in 2 seconds, then:

    id modifyWidth = [CCActionTween actionWithDuration:2 key:@"width" from:200 to:300];

    [target runAction:modifyWidth];

 Another example: CCScaleTo action could be rewritten using CCPropertyAction:

    // scaleA and scaleB are equivalents

    id scaleA = [CCScaleTo actionWithDuration:2 scale:3];

    id scaleB = [CCActionTween actionWithDuration:2 key:@"scale" from:1 to:3];

 @since v0.99.2

 */

class CC_DLL CCActionTween : public CCActionInterval

{

public:

    /** creates an initializes the action with the property name (key), and the from and to parameters. */

    static CCActionTween* create(float aDuration, const char* key, float from, float to);

    /** initializes the action with the property name (key), and the from and to parameters. */

    bool initWithDuration(float aDuration, const char* key, float from, float to);

    void startWithTarget(CCNode *pTarget);

    void update(float dt);

    CCActionInterval* reverse();

    std::string        m_strKey;

    float            m_fFrom, m_fTo;

    float            m_fDelta;

};

// end of actions group

/// @}

NS_CC_END

#endif /* __CCACTIONTWEEN_H__ */