axmol/cocos2dx/tilemap_parallax_nodes/CCParallaxNode.h

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2009-2010 Ricardo Quesada
Copyright (c) 2011      Zynga Inc.

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
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#ifndef __CCPARALLAX_NODE_H__
#define __CCPARALLAX_NODE_H__

#include "base_nodes/CCNode.h"
/*#include "support/data_support/ccArray.h"*/

NS_CC_BEGIN

struct _ccArray;

/**
 * @addtogroup tilemap_parallax_nodes
 * @{
 */

/** @brief ParallaxNode: A node that simulates a parallax scroller

The children will be moved faster / slower than the parent according the the parallax ratio.

*/
class CC_DLL ParallaxNode : public Node 
{
public:
    // Create a Parallax node
    static ParallaxNode * create();
    
    /** Adds a child to the container with a z-order, a parallax ratio and a position offset
    It returns self, so you can chain several addChilds.
    @since v0.8
    */
    ParallaxNode();
    virtual ~ParallaxNode();

    void addChild(Node * child, int z, const Point& parallaxRatio, const Point& positionOffset);
    
    //
    // Overrides
    //
    virtual void addChild(Node * child, int zOrder, int tag) override;
    virtual void removeChild(Node* child, bool cleanup) override;
    virtual void removeAllChildrenWithCleanup(bool cleanup) override;
    virtual void visit(void) override;
private:
    Point absolutePosition();
protected:
    Point    _lastPosition;
    /** array that holds the offset / ratio of the children */
    CC_SYNTHESIZE(struct _ccArray *, _parallaxArray, ParallaxArray)
};

// end of tilemap_parallax_nodes group
/// @}

NS_CC_END

#endif //__CCPARALLAX_NODE_H__