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background.h

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#ifndef __BACKGROUND_H
#define __BACKGROUND_H


class Background;

#include <string>
#include "graphics.h"
#include "util.h"

class Background
{
public:
        Background (Graphics &);

        // Load background class using a static image
        Background (string, Graphics &);        

        // Destructor
        ~Background();

        // Utility functions to actually set up a static image
        // background.
        void SetStatic (string);
        void SetStatic (Surface *);
        

        // Functions to draw the background onto the surface
        // if needed.
        bool Draw ();
        bool Draw (Surface *);

        // Needed to replace sprites on the screen
        // the Rect's should be in screen-coordinates
        void DrawRect (Rect &R);
        void DrawRect (Surface *, Rect &R);

        // Sets the location in the world. subworld-coordinates
        bool SetPosition (float, float);

        // Get the coordinates
        float GetX () const { return xOffset; }
        float GetY () const { return yOffset; }
        int GetWidth() const { return (staticImage) ? staticImage->w : 0; }
        int GetHeight() const { return (staticImage) ? staticImage->h : 0; }
        float GetMaxX() const { return xMax; }
        float GetMaxY() const { return yMax; }
        int GetXint() const { return (int)(xOffset + 0.5); }
        int GetYint() const { return (int)(yOffset + 0.5); }
        int GetScreenWidth() const { return GD.getWidth(); }
        int GetScreenHeight() const { return GD.getHeight(); }

private:
        // Need access to the current graphics device
        Graphics &GD;

        // Private rect blit
        void DrawRect (Surface *dest, Rect &R, Rect &S);

        // Vars for static redraw
        bool staticBackground;
        Surface *staticImage;

        // true of Draw() should redraw
        bool needRedraw;

        // Offset from 0,0 in the world.
        // i.e. subworld-coordinates
        float xOffset, yOffset;
        float xMax, yMax;
};

#endif

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