oversprite.h from FreePop at Krugle

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/***************************************************************************
                           oversprite.h
                           -------------------
    begin                : Sun Dec 5 2004
    copyright            : (C) 2004 by Brendon Lloyd Higgins
    email                : bh_doc@users.sourceforge.net
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef OVERSPRITE_H_INCLUDED
#define OVERSPRITE_H_INCLUDED

#include <ClanLib/display.h>

/**
 * This class acts like a CL_Sprite, but draws two images on top of each
 * other, one as a background, the other as a coloured foreground. For those
 * functions that are implemented this class has the same contract as
 * a CL_Sprite.
 */
class OverSprite {
private:
    /**
     * The background sprite.
     */
    CL_Sprite back;

    /**
     * The foreground sprite.
     */
    CL_Sprite over;

public:
    /**
     * Constructor.
     * \param resource_id The name of the resource. Two sprites make up this
     * overlay such that this parameter identifies the section in which a
     * "back" sprite and a "over" sprite exist.
     * \param manager The resource manager.
     * \param colour The colour of the front sprite.
     */
    OverSprite(const std::string& resource_id, CL_ResourceManager* manager,
               const CL_Color& colour = CL_Color::white);

    /**
     * Copy constructor.
     * \param sprite The OverSprite to copy.
     */
    OverSprite(const OverSprite& sprite);

    /**
     * Copy constructor.
     * \param sprite The OverSprite to copy.
     * \param colour The colour of the overlay.
     */
    OverSprite(const OverSprite& sprite, const CL_Color& colour);

    /**
     * Set the foreground colour.
     */
    void set_color(const CL_Color& c);

    /**
     * Draw it.
     */
    void draw(int x, int y, CL_GraphicContext* gc = 0);

    /**
     * Update it.
     */
    float update(float time_elapsed = 0);
};  

#endif /* ndef OVERSPRITE_H_INCLUDED */
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