RedCore/cocos2d/cocos/2d/CCParallaxNode.h

/****************************************************************************
Copyright (c) 2008-2010 Ricardo Quesada
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2011      Zynga Inc.
Copyright (c) 2013-2017 Chukong Technologies Inc.

http://www.cocos2d-x.org

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of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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****************************************************************************/
#ifndef __CCPARALLAX_NODE_H__
#define __CCPARALLAX_NODE_H__

#include "2d/CCNode.h"
/*#include "ccArray.h"*/

NS_CC_BEGIN

struct _ccArray;

/**
 * @addtogroup _2d
 * @{
 */

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

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

*/
class CC_DLL ParallaxNode : public Node
{
public:
    /** Create a Parallax node. 
     *
     * @return An autoreleased ParallaxNode object.
     */
    static ParallaxNode * create();

    // prevents compiler warning: "Included function hides overloaded virtual functions"
    using Node::addChild;

    /** Adds a child to the container with a local z-order, parallax ratio and position offset.
     *
     * @param child A child node.
     * @param z Z order for drawing priority.
     * @param parallaxRatio A given parallax ratio.
     * @param positionOffset A given position offset.
     */
    void addChild(Node * child, int z, const Vec2& parallaxRatio, const Vec2& positionOffset);

    /** Sets an array of layers for the Parallax node.
     *
     * @param parallaxArray An array of layers for the Parallax node.
     */
    void setParallaxArray( struct _ccArray *parallaxArray) { _parallaxArray = parallaxArray; }
    /** Returns the array of layers of the Parallax node.
     *
     * @return An array of layers for the Parallax node.
     */
    struct _ccArray* getParallaxArray() { return _parallaxArray; }
    const struct _ccArray* getParallaxArray() const { return _parallaxArray; }

    //
    // Overrides
    //
    virtual void addChild(Node * child, int zOrder, int tag) override;
    virtual void addChild(Node * child, int zOrder, const std::string &name) override;
    virtual void removeChild(Node* child, bool cleanup) override;
    virtual void removeAllChildrenWithCleanup(bool cleanup) override;
    virtual void visit(Renderer *renderer, const Mat4 &parentTransform, uint32_t parentFlags) override;

CC_CONSTRUCTOR_ACCESS:
    /** 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
     * @js ctor
     */
    ParallaxNode();
    /**
     * @js NA
     * @lua NA
     */
    virtual ~ParallaxNode();

protected:
    Vec2 absolutePosition();

    Vec2    _lastPosition;
    struct _ccArray* _parallaxArray;

private:
    CC_DISALLOW_COPY_AND_ASSIGN(ParallaxNode);
};

// end of _2d group
/// @}

NS_CC_END

#endif //__CCPARALLAX_NODE_H__