dist = grid_distance( source, monster->pos() );

            dist = grid_distance(source, monster->pos());

            if (!check_line_of_sight( source, monster->pos() ))

            if (!check_line_of_sight(source, monster->pos()))

bool check_line_of_sight( const coord_def& source, const coord_def& target )

/**
 * Checks whether target is in sight of source.
 *
 * Only used from cast_chain_lightning currently.
 * XXX: Move to los.cc; integrate with other LOS code.
 */
bool check_line_of_sight(const coord_def& source, const coord_def& target)

    const int dist = grid_distance( source, target );

    const int dist = grid_distance(source, target);

    return find_ray( source, target, false, ray );

    return find_ray(source, target, false, ray);