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/*
* File: mtransit.cc
* Summary: Tracks monsters that are in suspended animation between levels.
* Written by: Darshan Shaligram
*
* Modified for Crawl Reference by $Author: dshaligram $ on $Date: 2007-03-15T20:10:20.648083Z $
*/
#include "AppHdr.h"
#include "mtransit.h"
#include "items.h"
#include "mon-util.h"
#include "stuff.h"
#define MAX_LOST 100
monsters_in_transit the_lost_ones;
static void level_place_lost_monsters(m_transit_list &m);
static void level_place_followers(m_transit_list &m);
static void cull_lost(m_transit_list &mlist, int how_many)
{
// First pass, drop non-uniques.
for (m_transit_list::iterator i = mlist.begin(); i != mlist.end(); )
{
m_transit_list::iterator finger = i++;
if (!mons_is_unique(finger->mons.type))
{
mlist.erase(finger);
if (--how_many <= MAX_LOST)
return;
}
}
// If we're still over the limit (unlikely), just lose
// the old ones.
while (how_many-- > MAX_LOST && !mlist.empty())
mlist.erase( mlist.begin() );
}
m_transit_list *get_transit_list(const level_id &lid)
{
monsters_in_transit::iterator i = the_lost_ones.find(lid);
return (i != the_lost_ones.end()? &i->second : NULL);
}
void add_monster_to_transit(const level_id &lid, const monsters &m)
{
m_transit_list &mlist = the_lost_ones[lid];
mlist.push_back(m);
#ifdef DEBUG_DIAGNOSTICS
mprf(MSGCH_DIAGNOSTICS, "Monster in transit: %s",
m.name(DESC_PLAIN).c_str());
#endif
const int how_many = mlist.size();
if (how_many > MAX_LOST)
cull_lost(mlist, how_many);
}
void place_lost_ones(void (*placefn)(m_transit_list &ml))
{
level_id c = level_id::current();
monsters_in_transit::iterator i = the_lost_ones.find(c);
if (i == the_lost_ones.end())
return;
placefn(i->second);
if (i->second.empty())
the_lost_ones.erase(i);
}
void place_transiting_monsters()
{
place_lost_ones(level_place_lost_monsters);
}
void place_followers()
{
place_lost_ones(level_place_followers);
}
static bool place_lost_monster(follower &f)
{
return (f.place(false));
}
static void level_place_lost_monsters(m_transit_list &m)
{
for (m_transit_list::iterator i = m.begin();
i != m.end(); )
{
m_transit_list::iterator mon = i++;
// Transiting monsters have a 50% chance of being placed.
if (coinflip())
continue;
if (place_lost_monster(*mon))
m.erase(mon);
}
}
static void level_place_followers(m_transit_list &m)
{
for (m_transit_list::iterator i = m.begin();
i != m.end(); )
{
m_transit_list::iterator mon = i++;
if ((mon->mons.flags & MF_TAKING_STAIRS) && mon->place(true))
m.erase(mon);
}
}
//////////////////////////////////////////////////////////////////////////
// follower
follower::follower(const monsters &m) : mons(m), items()
{
load_mons_items();
}
void follower::load_mons_items()
{
for (int i = 0; i < NUM_MONSTER_SLOTS; ++i)
if (mons.inv[i] != NON_ITEM)
items[i] = mitm[ mons.inv[i] ];
else
items[i].clear();
}
bool follower::place(bool near_player)
{
for (int i = 0; i < MAX_MONSTERS - 5; ++i)
{
monsters &m = menv[i];
if (m.alive())
continue;
m = mons;
if (m.find_place_to_live(near_player))
{
#ifdef DEBUG_DIAGNOSTICS
mprf(MSGCH_DIAGNOSTICS, "Placed follower: %s",
m.name(DESC_PLAIN).c_str());
#endif
m.target_x = m.target_y = 0;
if (m.flags & MF_TAKING_STAIRS)
m.flags &= ~MF_TAKING_STAIRS;
else
m.flags |= MF_JUST_SUMMONED;
restore_mons_items(m);
return (true);
}
m.reset();
break;
}
return (false);
}
void follower::restore_mons_items(monsters &m)
{
for (int i = 0; i < NUM_MONSTER_SLOTS; ++i)
{
if (items[i].base_type == OBJ_UNASSIGNED)
m.inv[i] = NON_ITEM;
else
{
const int islot = get_item_slot(0);
m.inv[i] = islot;
if (islot == NON_ITEM)
continue;
item_def &it = mitm[islot];
it = items[i];
it.x = it.y = 0;
it.link = NON_ITEM;
}
}
}
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