decalqueue.h

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#include <vector>
#include <string>
#include "vs_globals.h"
class DecalQueue
{
    int nullity;
    std::vector< int >decalref;
    std::vector< Texture* >decal;
public: DecalQueue()
    {
        nullity = -1;
    }
    inline Texture * GetTexture( const unsigned int ref )
    {
        return decal[ref];
    }
    unsigned int AddTexture( const char *texname, enum FILTER mipmap )
    {
        Texture     *tmpDecal = Texture::Exists( std::string( texname ) );
        if (nullity != -1 && tmpDecal == NULL && !g_game.use_textures)
            tmpDecal = decal[nullity];
        unsigned int i = 0;
        unsigned int retval = 0;
        int nullio     = -1;
        if (tmpDecal) {
            for (; i < decal.size(); i++) {
                if (decal[i]) {
                    if ( (*decal[i]) == (*tmpDecal) ) {
                        retval = i;
                        decalref[i]++;
                        break;
                    }
                }
                if (!decal[i] && decalref[i] == 0)
                    nullio = i;
            }
        }
        if ( !tmpDecal || i == decal.size() ) {
            //make sure we have our own to delete upon refcount =0
            Texture *tex = new Texture( texname, 0, mipmap, TEXTURE2D, TEXTURE_2D, GFXTRUE );
            if ( (nullity == -1) || tex->LoadSuccess() ) {
                if (nullio != -1) {
                    retval = nullio;
                    decal[nullio] = tex;
                    decalref[nullio] = 1;
                } else {
                    retval = decal.size();
                    decal.push_back( tex );
                    decalref.push_back( 1 );
                }
            }
            if ( !tex->LoadSuccess() ) {
                if (nullity == -1) {
                    nullity = retval;
                } else {
                    delete tex;
                    tex    = NULL;
                    retval = nullity;
                    decalref[nullity]++;
                }
            }
        }
        return retval;
    }
    bool DelTexture( unsigned int ref )
    {
        decalref[ref]--;
        if (decalref[ref] <= 0) {
            delete decal[ref];
            decal[ref] = NULL;
            return true;
        }
        return false;
    }
};