[Arkshine]

It searches entities in a box.

PHP Code:

int UTIL_EntitiesInBox( CBaseEntity **pList, int listMax, const Vector &mins, const Vector &maxs, int flagMask )
{
    edict_t        *pEdict = g_engfuncs.pfnPEntityOfEntIndex( 1 );
    CBaseEntity *pEntity;
    int            count;

    count = 0;

    if ( !pEdict )
        return count;

    for ( int i = 1; i < gpGlobals->maxEntities; i++, pEdict++ )
    {
        if ( pEdict->free )    // Not in use
            continue;
        
        if ( flagMask && !(pEdict->v.flags & flagMask) )    // Does it meet the criteria?
            continue;

        if ( mins.x > pEdict->v.absmax.x ||
             mins.y > pEdict->v.absmax.y ||
             mins.z > pEdict->v.absmax.z ||
             maxs.x < pEdict->v.absmin.x ||
             maxs.y < pEdict->v.absmin.y ||
             maxs.z < pEdict->v.absmin.z )
             continue;

        pEntity = CBaseEntity::Instance(pEdict);
        if ( !pEntity )
            continue;

        pList[ count ] = pEntity;
        count++;

        if ( count >= listMax )
            return count;
    }

    return count;
}