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Background.h

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/***************************************************************************
                          Background.h  -  description
                             -------------------
    begin                : Sun Jan 11 2004
    copyright            : (C) 2004 by upi
    email                : upi@feel
 ***************************************************************************/

#ifndef __BACKGROUND_H
#define __BACKGROUND_H


#include <vector>
struct SDL_Surface;

class CBackground
{
public:
    struct SBackgroundLayer
    {
        SDL_Surface*    m_poSurface;
        int             m_iXOffset;
        int             m_iYOffset;
        double          m_dDistance;
    };
    
private:
    typedef std::vector<SBackgroundLayer> CLayerVector;
    typedef CLayerVector::iterator CLayerIterator;

    void            Clear();

public:
    CBackground();
    ~CBackground();

    void            Load( int a_iBackgroundNumber );
    void            AddExtraLayer( const SBackgroundLayer& a_roLayer );
    void            DeleteExtraLayers();

    bool            IsOK();
    void            Draw( int a_iXPosition, int a_iYPosition, int a_iYOffset );

protected:
    int             m_iNumber;
    int             m_iFirstExtraLayer;
    bool            m_bOK;
    CLayerVector    m_aLayers;
};

#endif // __BACKGROUND_H

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