hgeResourceReader.h

//
// Opal SDK 1.0 
// Copyright(C) 2009, Paul Blower
//

#ifndef HGERESOURCEREADER__
#define HGERESOURCEREADER__

#include <hge.h>

// Resource Reader Class

class hgeResourceReader
{
protected:

    // HGE Interface
    HGE *hge;

    // read position
    size_t rpos;

    // data
    byte *data;

    // size
    DWORD size;

public:

    hgeResourceReader(const char *filename)
    {
        hge = hgeCreate( HGE_VERSION );

        data = (byte*)hge->Resource_Load( filename, &size );

        if (!data) size = 0; // catch failed load

        rpos = 0;
    }

    void read(void *dstbuf, size_t elementsize, size_t count)
    {
        size_t tsize = elementsize * count;

        if (rpos + tsize > size)
        {
            hge->System_Log("hgeResourceReader: Error in read(). Attempted to read past buffer end");
            return;
        }

        memcpy( dstbuf, &data[rpos], tsize );
        rpos += tsize;
    }

    void close()
    {
        hge->Resource_Free( data );
    }

};

#endif

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