D:/simple_rts/include/FogOfWar.h

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#ifndef __FOG_OF_WAR_H__
#define __FOG_OF_WAR_H__

#include "OgreTexture.h"
#include "OgreHardwarePixelBuffer.h"

using Ogre::TexturePtr;
using Ogre::HardwarePixelBufferSharedPtr;

namespace ASR
{
        class Unit;

        // ----------------------------------------------------------------------------
        class FogOfWar
        {
        // Data Storage
        // ----------------------------------------------------------------------------
        private:
                static int                      mNumFogs;

                int             mWidth;
                int             mHeight;
                unsigned int*   mBuffer;

                TexturePtr                                              mFogTexture;
                HardwarePixelBufferSharedPtr    mPixBuffer;


        // Construction
        // ----------------------------------------------------------------------------
        public:
                FogOfWar ( int width, int height );
                ~FogOfWar ();


        // Update Management
        // ----------------------------------------------------------------------------
        public:
                void blackOut ();
                void setVisible ( int x, int y, int radius );
                void updateTexture ();
                void fadeOut ();


        // Query Methods
        // ----------------------------------------------------------------------------
        public:
                bool isUnitVisible ( const Unit* unit ) const;


        // Rendering Functions
        // ----------------------------------------------------------------------------
        private:
                void _drawHorizontalLine ( int xStart, int xEnd, int y );
        };
}

#endif

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