m_transit_list *get_transit_list(level_id where);

}
m_transit_list *get_transit_list(level_id lid)
{
    monsters_in_transit::iterator i = the_lost_ones.find(lid);
    return (i != the_lost_ones.end()? &i->second : NULL);

#include "mtransit.h"

void ghost_demon::find_transiting_ghosts(
    std::vector<ghost_demon> &gs, int n)
{
    if (n <= 0)
        return;

    const m_transit_list *mt = get_transit_list(level_id::current());
    if (mt)
    {
        for (m_transit_list::const_iterator i = mt->begin();
             i != mt->end() && n > 0; ++i)
        {
            if (i->mons.type == MONS_PLAYER_GHOST)
            {
                const monsters &m = i->mons;
                if (m.ghost.get())
                {
                    gs.push_back(*m.ghost);
                    --n;
                }
            }
        }
    }
}

    // Check the transit list for the current level.
    find_transiting_ghosts(gs, n);

    static void find_transiting_ghosts(std::vector<ghost_demon> &gs, int n);