LoadMapData (sanity checks)

long FFScript::loadMapData()
{
    long _map = (ri->d[0] / 10000);
    long _scr = (ri->d[1]/10000);
    int indx = (zc_max((_map)-1,0) * MAPSCRS + _scr);
    //Z_scripterrlog("LoadMapData Map Value: %d\n", _map);
    //Z_scripterrlog("LoadMapData Screen Value: %d\n", _scr);
    //Z_scripterrlog("LoadMapData Indx Value: %d\n", indx);
     if ( _map < 1 || _map > (map_count-1) )
    {
    Z_scripterrlog("Invalid Map ID passed to Game->LoadMapData: %d\n", _map);
    ri->mapsref = LONG_MAX;
    }
    else if ( _scr < 0 || _scr > 129 ) //0x00 to 0x81 -Z
    {
    Z_scripterrlog("Invalid Screen ID passed to Game->LoadMapData: %d\n", _scr);
    ri->mapsref = LONG_MAX;
    }
    else ri->mapsref = indx;
    //Z_scripterrlog("LoadMapData Screen set ri->mapsref to: %d\n", ri->mapsref);
    return ri->mapsref;
}