server/common/arch.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 *
 * Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
 * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * Copyright (©) 2002 Mark Wedel & Crossfire Development Team
 * Copyright (©) 1992 Frank Tore Johansen
 *
 * Deliantra is free software: you can redistribute it and/or modify it under
 * the terms of the Affero GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the Affero GNU General Public License
 * and the GNU General Public License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

#include <cassert>
#include <functional>

#include <flat_hash_map.hpp>

#include <global.h>

archetype *loading_arch; // ugly flag to object loader etc. to suppress/request special processing
arch_ptr archetype::empty;

// the hashtable
typedef ska::flat_hash_map
  <
    const char *,
    arch_ptr,
    str_hash,
    str_equal,
    slice_allocator< std::pair<const char *const, arch_ptr> >
  > HT;

static HT ht (10000);
archvec archetypes;
static unordered_vector<archetype *> allarch;
static int dirtycnt;

// the vector of other_arch references to be resolved
static std::vector< std::pair<arch_ptr *, shstr> > postponed_arch_ref;
// the vector of loaded but not yet committed archetypes
static std::vector<archetype *> postponed_arch;

//+GPL

/*
 * Creates an object.  This function is called by archetype::get ()
 * if it fails to find the appropriate archetype.
 * Thus archetype::get() will be guaranteed to always return
 * an object, and never NULL.
 */
static object *
create_singularity (const char *name)
{
  LOG (llevError | logBacktrace, "FATAL: creating singularity for '%s'.\n", name);

  if (!strcmp (name, "bug"))
    abort ();

  object *op = archetype::get (shstr_bug);
  op->name = op->name_pl = format ("bug, please report (missing archetype %s)", name);

  return op;
}

/**
 * GROS -  This function retrieves an archetype given the name that appears
 * during the game (for example, "writing pen" instead of "stylus").
 * It does not use the hashtable system, but browse the whole archlist each time.
 * I suggest not to use it unless you really need it because of performance issue.
 * It is currently used by scripting extensions (create-object).
 * Params:
 * - name: the name we're searching for (ex: "writing pen");
 * Return value:
 * - the archetype found or null if nothing was found.
 */
archetype *
find_archetype_by_object_name (const char *name)
{
  shstr_cmp name_cmp (name);

  for_all_archetypes (at)
    if (at->name == name_cmp)
      return at;

  return 0;
}

/**
 * This function retrieves an archetype by type and name that appears during
 * the game. It is basically the same as find_archetype_by_object_name()
 * except that it considers only items of the given type.
 */
archetype *
find_archetype_by_object_type_name (int type, const char *name)
{
  shstr_cmp name_cmp (name);

  for_all_archetypes (at)
    if (at->name == name_cmp && at->type == type)
      return at;

  return 0;
}

/* This is a lot like the above function.  Instead, we are trying to match
 * the arch->skill values.  type is the type of object to match
 * against (eg, to only match against skills or only skill objects for example).
 * If type is -1, ew don't match on type.
 */
object *
get_archetype_by_skill_name (const char *skill, int type)
{
  shstr_cmp skill_cmp (skill);

  for_all_archetypes (at)
    if (at->skill == skill_cmp && (type == -1 || type == at->type))
      return at->instance ();

  return 0;
}

/* similiar to above - this returns the first archetype
 * that matches both the type and subtype.  type and subtype
 * can be -1 to say ignore, but in this case, the match it does
 * may not be very useful.  This function is most useful when
 * subtypes are known to be unique for a particular type
 * (eg, skills)
 */
archetype *
get_archetype_by_type_subtype (int type, int subtype)
{
  for_all_archetypes (at)
    if ((type == -1 || type == at->type) && (subtype == -1 || subtype == at->subtype))
      return at;

  return 0;
}

/**
 * GROS - this returns a new object given the name that appears during the game
 * (for example, "writing pen" instead of "stylus").
 * Params:
 * - name: The name we're searching for (ex: "writing pen");
 * Return value:
 * - a corresponding object if found; a singularity object if not found.
 * Note by MSW - it appears that it takes the full name and keeps
 * shortening it until it finds a match.  I re-wrote this so that it
 * doesn't allocate it each time - not that this function is used much,
 * but it otherwise had a big memory leak.
 */
object *
get_archetype_by_object_name (const char *name)
{
  char tmpname[MAX_BUF];

  assign (tmpname, name);

  for (int i = strlen (tmpname); i > 0; i--)
    {
      tmpname[i] = 0;

      if (archetype *at = find_archetype_by_object_name (tmpname))
        return at->instance ();
    }

  return create_singularity (name);
}

/* This is a subset of the parse_id command.  Basically, name can be
 * a string seperated lists of things to match, with certain keywords.
 * pl is the player (only needed to set count properly)
 * op is the item we are trying to match.  Calling function takes care
 * of what action might need to be done and if it is valid
 * (pickup, drop, etc.)  Return NONZERO if we have a match.  A higher
 * value means a better match.  0 means no match.
 *
 * Brief outline of the procedure:
 * We take apart the name variable into the individual components.
 * cases for 'all' and unpaid are pretty obvious.
 * Next, we check for a count (either specified in name, or in the
 * player object.)
 * If count is 1, make a quick check on the name.
 * IF count is >1, we need to make plural name.  Return if match.
 * Last, make a check on the full name.
 */
int
item_matched_string (object *pl, object *op, const char *name)
{
  char *cp, local_name[MAX_BUF];
  int count, retval = 0;

  assign (local_name, name);    /* strtok is destructive to name */

  for (cp = strtok (local_name, ","); cp; cp = strtok (NULL, ","))
    {
      while (cp[0] == ' ')
        ++cp;                   /* get rid of spaces */

      /*      LOG(llevDebug,"Trying to match %s\n", cp); */
      /* All is a very generic match - low match value */
      if (!strcmp (cp, "all"))
        return 1;

      /* unpaid is a little more specific */
      if (!strcmp (cp, "unpaid") && op->flag [FLAG_UNPAID])
        return 2;

      if (!strcmp (cp, "cursed") && op->flag [FLAG_KNOWN_CURSED] && (op->flag [FLAG_CURSED] || op->flag [FLAG_DAMNED]))
        return 2;

      if (!strcmp (cp, "unlocked") && !op->flag [FLAG_INV_LOCKED])
        return 2;

      /* Allow for things like '100 arrows' */
      if ((count = atoi (cp)) != 0)
        {
          cp = strchr (cp, ' ');
          while (cp && cp[0] == ' ')
            ++cp;               /* get rid of spaces */
        }
      else
        {
          if (pl->type == PLAYER)
            count = pl->contr->count;
          else
            count = 0;
        }

      if (!cp || cp[0] == '\0' || count < 0)
        return 0;


      /* The code here should go from highest retval to lowest.  That
       * is because of the 'else' handling - we don't want to match on
       * something and set a low retval, even though it may match a higher retcal
       * later.  So keep it in descending order here, so we try for the best
       * match first, and work downward.
       */
      const char *qbn0, *qbn1, *qsn; // query base name/short name caches

      if (!strcasecmp (cp, query_name (op)))
        retval = 20;
      else if (!strcasecmp (cp, qsn = query_short_name (op)))
        retval = 18;
      else if (!strcasecmp (cp, qbn0 = query_base_name (op, 0)))
        retval = 16;
      else if (!strcasecmp (cp, qbn1 = query_base_name (op, 1)))
        retval = 16;
      else if (op->custom_name && !strcasecmp (cp, op->custom_name))
        retval = 15;
      else if (!strncasecmp (cp, qbn0, strlen (cp)))
        retval = 14;
      else if (!strncasecmp (cp, qbn1, strlen (cp)))
        retval = 14;
      /* Do substring checks, so things like 'Str+1' will match.
       * retval of these should perhaps be lower - they are lower
       * then the specific strcasecmp aboves, but still higher than
       * some other match criteria.
       */
      else if (strstr (qbn1, cp))
        retval = 12;
      else if (strstr (qbn0, cp))
        retval = 12;
      else if (strstr (qsn, cp))
        retval = 12;
      /* Check against plural/non plural based on count. */
      else if (count > 1 && !strcasecmp (cp, op->name_pl))
        retval = 6;
      else if (count == 1 && !strcasecmp (op->name, cp))
        retval = 6;
      /* base name matched - not bad */
      else if (strcasecmp (cp, op->name) == 0 && !count)
        retval = 4;
      /* Check for partial custom name, but give a real low priority */
      else if (op->custom_name.contains (cp))
        retval = 3;

      if (retval)
        {
          if (pl->type == PLAYER)
            pl->contr->count = count;

          return retval;
        }
    }

  return 0;
}

//-GPL

void
archetype::do_delete ()
{
  delete this;
}

archetype::archetype (const char *name)
{
  arch = this;
  this->archname = this->name = this->name_pl = name;
}

archetype::~archetype ()
{
  unlink ();
}

void
archetype::link ()
{
  if (!archetypes.contains (this))
    {
      archetypes.insert (this);
      ht.insert (std::make_pair (archname, this));
    }
}

void
archetype::unlink ()
{
  if (archetypes.contains (this))
    {
      archetypes.erase (this);
      ht.erase (archname);
    }
}

/*
 * Finds, using the hashtable, which archetype matches the given name.
 * returns a pointer to the found archetype, otherwise NULL.
 */
archetype *
archetype::find (const char *name)
{
  if (!name)
    return 0;

  auto (i, ht.find (name));

  if (i == ht.end ())
    return 0;
  else
    return i->second;
}

void
archetype::post_load_check ()
{
  assert (("obj_original MUST NOT be set for archetypes", !flag [FLAG_OBJ_ORIGINAL]));

  if (type == SKILL)
    add_skill_archetype (this);

  object::post_load_check ();
}

archetype *
archetype::read (object_thawer &f)
{
  assert (f.kw == KW_object);

  std::vector<archetype *> parts;

  coroapi::cede_to_tick ();

  for (;;)
    {
      archetype *at = new archetype (f.get_str ());

      f.next ();

#if 0
      // implementing it here in the server does neither allow multiple inheritence
      // nor does it cleanly "just override". it would allow use in map files, though,
      // and other resource files dynamically loaded (as opposed to being preprocessed).
      // not that any of this is relevant as of yet...
      if (f.kw == KW_inherit)
        {
          if (archetype *at = find (f.get_str ()))
            *op = at->clone;
          else
            LOG (llevError, "archetype '%s' tries to inherit from non-existent archetype '%s'.\n",
                 &at->archname, f.get_str ());

          f.next ();
        }
#endif

      loading_arch = at; // hack to tell parse_kv et al. to behave
      bool parse_ok = at->parse_kv (f);
      loading_arch = 0;

      if (!parse_ok)
        goto fail;

      loading_arch = at; // hack to tell parse_kv et al. to behave
      at->post_load_check ();
      loading_arch = 0;

      parts.push_back (at);

      if (f.kw != KW_more)
        break;

      f.next ();

      if (f.kw != KW_object)
        {
          f.parse_error ("more object");
          goto fail;
        }
    }

  {
    archetype *new_head = parts.front ();
    archetype *old_head = find (new_head->archname);

    if (old_head && !old_head->is_head ())
      {
        LOG (llevError, "%s: unable to overwrite non-head archetype '%s' with head archetype, skipping.\n",
             &new_head->archname, &old_head->archname);
        goto fail;
      }

    // check that all archetypes belong to the same old object or are new
    for (auto &&at : parts)
      {
        archetype *new_part = at;
        archetype *old_part = find (new_part->archname);

        if (old_part && old_part->head_ () != old_head)
          {
            LOG (llevError, "%s: unable to overwrite archetype '%s' with archetype of different object, skipping.\n",
                 &new_part->archname, &((archetype *)old_part->head_ ())->archname);
            goto fail;
          }
      }

    // assemble new chain
    new_head->max_x = new_head->x;

    archetype *less = new_head;
    for (auto &&p = parts.begin () + 1; p != parts.end (); ++p)
      {
        archetype *at = *p;

        // some flags get inherited from the head (probably a lot more)
        // doing it here doesn't feel too cozy, but it allows code
        // to ignore head checks for these flags, which saves time
        at->flag [FLAG_ALIVE]    = new_head->flag [FLAG_ALIVE];
        at->flag [FLAG_NO_PICK]  = new_head->flag [FLAG_NO_PICK];
        at->flag [FLAG_MONSTER]  = new_head->flag [FLAG_MONSTER];
        at->flag [FLAG_IS_FLOOR] = new_head->flag [FLAG_IS_FLOOR];

        new_head->max_x = max (new_head->max_x, at->x);

        at->head = new_head;
        less->more = at;
        less = at;
      }

    postponed_arch.insert (postponed_arch.end (), parts.begin (), parts.end ());

    return new_head;
  }

fail:
  for (auto &&at : parts)
    at->destroy ();

  return 0;
}

void
archetype::postpone_arch_ref (arch_ptr &ref, const_utf8_string other_arch)
{
  ref = 0;
  postponed_arch_ref.push_back (std::pair<arch_ptr *, shstr>(&ref, shstr (other_arch)));
}

void
archetype::commit_load ()
{
  // unlink old archetypes and link in new ones */
  for (auto &&at : postponed_arch)
    {
      if (archetype *old = find (at->archname))
        old->unlink ();

      allarch.push_back (at);

      at->link ();
      ++dirtycnt;
    }

  postponed_arch.clear ();

  // now resolve arch references
  for (auto &&p : postponed_arch_ref) // not yet C++17
    {
      arch_ptr *ap = p.first;
      archetype *at = find (p.second);

      if (!at)
        LOG (llevError, "unable to resolve postponed arch reference to '%s'", &p.second);

      *ap = at;
    }

  postponed_arch_ref.clear ();

  empty = find (shstr_empty_archetype);
}

void
archetype::gc ()
{
  int cnt = max (1, min<int> (allarch.size () / 128, dirtycnt));
  dirtycnt = max (0, dirtycnt - cnt);

  do
    {
      static int idx;

      if (idx >= allarch.size ())
        if (idx)
          idx = 0;
        else
          return;

      archetype *at = allarch [idx];

      if (at->refcnt_cnt () > 1) // all arches have ONE refcount from their object
        ++idx;
      else
        {
          //LOG (llevDebug, "garbage collect arch %s", &at->archname);
          assert (at->arch == at); // verify that refcnt == 1 is truly valid
          allarch.erase (idx);

          // break chain
          for (object *op = at->head_ (); op; )
            {
              object *next = op->more;
              op->head = 0;
              op->more = 0;
              op = next;
            }

          at->destroy ();
          at->arch = 0;
        }
    }
  while (--cnt);
}

object *
archetype::instance ()
{
  object *op = clone ();
  op->instantiate ();
  return op;
}

//+GPL

/*
 * Finds which archetype matches the given name, and returns a new
 * object containing a copy of the archetype.
 */
object *
archetype::get (const char *name)
{
  archetype *at = find (name);

  if (!at)
    return create_singularity (name);

  return at->instance ();
}

/*
 * Returns the first archetype using the given type.
 * Used in treasure-generation.
 */
static archetype *
type_to_archetype (int type)
{
  for_all_archetypes (at)
    if (at->type == type && at->head_ () != at)
      return at;

  return 0;
}

/*
 * Returns a new object copied from the first archetype matching
 * the given type.
 * Used in treasure-generation.
 */
object *
clone_arch (int type)
{
  archetype *at = type_to_archetype (type);

  if (!at)
    {
      LOG (llevError, "Can't clone archetype %d\n", type);
      return 0;
    }

  return at->instance ();
}

/*
 * member: make instance from class
 */
object *
object_create_arch (archetype *at)
{
  object *op, *prev = 0, *head = 0;

  while (at)
    {
      op = at->instance ();

      op->x = at->x;
      op->y = at->y;

      if (head)
        op->head = head, prev->more = op;

      if (!head)
        head = op;

      prev = op;
      at = (archetype *)at->more;
    }

  return head;
}

//-GPL

Revision:	1.118
Committed:	Tue Nov 27 18:50:22 2018 UTC (5 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.117:	+8 -7 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	elmex	1.1	/*
2	root	1.71	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	root	1.111	*
4	root	1.116	* Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
5	root	1.112	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
6	root	1.100	* Copyright (©) 2002 Mark Wedel & Crossfire Development Team
7			* Copyright (©) 1992 Frank Tore Johansen
8	root	1.111	*
9	root	1.89	* Deliantra is free software: you can redistribute it and/or modify it under
10			* the terms of the Affero GNU General Public License as published by the
11			* Free Software Foundation, either version 3 of the License, or (at your
12			* option) any later version.
13	root	1.111	*
14	root	1.68	* This program is distributed in the hope that it will be useful,
15			* but WITHOUT ANY WARRANTY; without even the implied warranty of
16			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17			* GNU General Public License for more details.
18	root	1.111	*
19	root	1.89	* You should have received a copy of the Affero GNU General Public License
20			* and the GNU General Public License along with this program. If not, see
21			* <http://www.gnu.org/licenses/>.
22	root	1.111	*
23	root	1.71	* The authors can be reached via e-mail to <support@deliantra.net>
24	pippijn	1.37	*/
25	elmex	1.1
26	root	1.12	#include <cassert>
27	root	1.115	#include <functional>
28
29			#include <flat_hash_map.hpp>
30	root	1.12
31	elmex	1.1	#include <global.h>
32
33	root	1.74	archetype *loading_arch; // ugly flag to object loader etc. to suppress/request special processing
34			arch_ptr archetype::empty;
35	root	1.46
36	root	1.12	// the hashtable
37	root	1.118	typedef ska::flat_hash_map
38			<
39			const char *,
40			arch_ptr,
41			str_hash,
42			str_equal,
43			slice_allocator< std::pair<const char *const, arch_ptr> >
44			> HT;
45	root	1.18
46	root	1.74	static HT ht (10000);
47	root	1.62	archvec archetypes;
48	root	1.74	static unordered_vector<archetype *> allarch;
49			static int dirtycnt;
50	root	1.12
51	root	1.73	// the vector of other_arch references to be resolved
52			static std::vector< std::pair<arch_ptr *, shstr> > postponed_arch_ref;
53			// the vector of loaded but not yet committed archetypes
54			static std::vector<archetype *> postponed_arch;
55
56	root	1.92	//+GPL
57
58	root	1.93	/*
59	root	1.108	* Creates an object. This function is called by archetype::get ()
60	root	1.93	* if it fails to find the appropriate archetype.
61	root	1.108	* Thus archetype::get() will be guaranteed to always return
62	root	1.93	* an object, and never NULL.
63			*/
64	root	1.94	static object *
65	root	1.93	create_singularity (const char *name)
66			{
67			LOG (llevError \| logBacktrace, "FATAL: creating singularity for '%s'.\n", name);
68
69			if (!strcmp (name, "bug"))
70			abort ();
71
72			object *op = archetype::get (shstr_bug);
73			op->name = op->name_pl = format ("bug, please report (missing archetype %s)", name);
74
75			return op;
76			}
77
78	elmex	1.1	/**
79			* GROS - This function retrieves an archetype given the name that appears
80			* during the game (for example, "writing pen" instead of "stylus").
81			* It does not use the hashtable system, but browse the whole archlist each time.
82			* I suggest not to use it unless you really need it because of performance issue.
83			* It is currently used by scripting extensions (create-object).
84			* Params:
85			* - name: the name we're searching for (ex: "writing pen");
86			* Return value:
87			* - the archetype found or null if nothing was found.
88			*/
89	root	1.12	archetype *
90			find_archetype_by_object_name (const char *name)
91			{
92	root	1.39	shstr_cmp name_cmp (name);
93	elmex	1.1
94	root	1.63	for_all_archetypes (at)
95	root	1.66	if (at->name == name_cmp)
96	root	1.39	return at;
97	elmex	1.1
98	root	1.39	return 0;
99	elmex	1.1	}
100
101			/**
102			* This function retrieves an archetype by type and name that appears during
103			* the game. It is basically the same as find_archetype_by_object_name()
104			* except that it considers only items of the given type.
105			*/
106	root	1.12	archetype *
107			find_archetype_by_object_type_name (int type, const char *name)
108			{
109	root	1.39	shstr_cmp name_cmp (name);
110	elmex	1.1
111	root	1.63	for_all_archetypes (at)
112	root	1.66	if (at->name == name_cmp && at->type == type)
113	root	1.39	return at;
114	elmex	1.1
115	root	1.39	return 0;
116	elmex	1.1	}
117
118			/* This is a lot like the above function. Instead, we are trying to match
119			* the arch->skill values. type is the type of object to match
120			* against (eg, to only match against skills or only skill objects for example).
121			* If type is -1, ew don't match on type.
122			*/
123	root	1.12	object *
124			get_archetype_by_skill_name (const char *skill, int type)
125			{
126	root	1.39	shstr_cmp skill_cmp (skill);
127	elmex	1.1
128	root	1.63	for_all_archetypes (at)
129			if (at->skill == skill_cmp && (type == -1 \|\| type == at->type))
130	root	1.80	return at->instance ();
131	root	1.35
132			return 0;
133	elmex	1.1	}
134
135			/* similiar to above - this returns the first archetype
136			* that matches both the type and subtype. type and subtype
137			* can be -1 to say ignore, but in this case, the match it does
138			* may not be very useful. This function is most useful when
139			* subtypes are known to be unique for a particular type
140			* (eg, skills)
141			*/
142	root	1.12	archetype *
143			get_archetype_by_type_subtype (int type, int subtype)
144			{
145	root	1.63	for_all_archetypes (at)
146			if ((type == -1 \|\| type == at->type) && (subtype == -1 \|\| subtype == at->subtype))
147	root	1.39	return at;
148	elmex	1.1
149	root	1.39	return 0;
150	elmex	1.1	}
151
152			/**
153			* GROS - this returns a new object given the name that appears during the game
154			* (for example, "writing pen" instead of "stylus").
155			* Params:
156			* - name: The name we're searching for (ex: "writing pen");
157			* Return value:
158			* - a corresponding object if found; a singularity object if not found.
159			* Note by MSW - it appears that it takes the full name and keeps
160			* shortening it until it finds a match. I re-wrote this so that it
161	root	1.78	* doesn't allocate it each time - not that this function is used much,
162	elmex	1.1	* but it otherwise had a big memory leak.
163			*/
164	root	1.12	object *
165			get_archetype_by_object_name (const char *name)
166			{
167	root	1.17	char tmpname[MAX_BUF];
168
169			assign (tmpname, name);
170	root	1.12
171	root	1.90	for (int i = strlen (tmpname); i > 0; i--)
172	root	1.12	{
173			tmpname[i] = 0;
174	root	1.17
175	root	1.39	if (archetype *at = find_archetype_by_object_name (tmpname))
176	root	1.80	return at->instance ();
177	elmex	1.1	}
178	root	1.17
179	root	1.12	return create_singularity (name);
180	elmex	1.1	}
181
182	root	1.65	/* This is a subset of the parse_id command. Basically, name can be
183			* a string seperated lists of things to match, with certain keywords.
184			* pl is the player (only needed to set count properly)
185			* op is the item we are trying to match. Calling function takes care
186			* of what action might need to be done and if it is valid
187			* (pickup, drop, etc.) Return NONZERO if we have a match. A higher
188			* value means a better match. 0 means no match.
189			*
190			* Brief outline of the procedure:
191			* We take apart the name variable into the individual components.
192			* cases for 'all' and unpaid are pretty obvious.
193			* Next, we check for a count (either specified in name, or in the
194			* player object.)
195			* If count is 1, make a quick check on the name.
196			* IF count is >1, we need to make plural name. Return if match.
197			* Last, make a check on the full name.
198			*/
199	root	1.12	int
200	root	1.15	item_matched_string (object pl, object op, const char *name)
201	elmex	1.1	{
202	root	1.22	char *cp, local_name[MAX_BUF];
203			int count, retval = 0;
204	root	1.15
205	root	1.40	assign (local_name, name); /* strtok is destructive to name */
206	root	1.12
207			for (cp = strtok (local_name, ","); cp; cp = strtok (NULL, ","))
208			{
209			while (cp[0] == ' ')
210			++cp; /* get rid of spaces */
211
212			/* LOG(llevDebug,"Trying to match %s\n", cp); */
213			/* All is a very generic match - low match value */
214			if (!strcmp (cp, "all"))
215			return 1;
216
217			/* unpaid is a little more specific */
218	root	1.102	if (!strcmp (cp, "unpaid") && op->flag [FLAG_UNPAID])
219	root	1.12	return 2;
220	root	1.90
221	root	1.102	if (!strcmp (cp, "cursed") && op->flag [FLAG_KNOWN_CURSED] && (op->flag [FLAG_CURSED] \|\| op->flag [FLAG_DAMNED]))
222	root	1.12	return 2;
223
224	root	1.102	if (!strcmp (cp, "unlocked") && !op->flag [FLAG_INV_LOCKED])
225	root	1.12	return 2;
226
227			/* Allow for things like '100 arrows' */
228			if ((count = atoi (cp)) != 0)
229			{
230			cp = strchr (cp, ' ');
231			while (cp && cp[0] == ' ')
232			++cp; /* get rid of spaces */
233			}
234			else
235			{
236			if (pl->type == PLAYER)
237			count = pl->contr->count;
238			else
239			count = 0;
240			}
241
242			if (!cp \|\| cp[0] == '\0' \|\| count < 0)
243			return 0;
244
245
246			/* The code here should go from highest retval to lowest. That
247			* is because of the 'else' handling - we don't want to match on
248			* something and set a low retval, even though it may match a higher retcal
249			* later. So keep it in descending order here, so we try for the best
250			* match first, and work downward.
251			*/
252	root	1.91	const char qbn0, qbn1, *qsn; // query base name/short name caches
253
254	root	1.12	if (!strcasecmp (cp, query_name (op)))
255			retval = 20;
256	root	1.91	else if (!strcasecmp (cp, qsn = query_short_name (op)))
257	root	1.12	retval = 18;
258	root	1.91	else if (!strcasecmp (cp, qbn0 = query_base_name (op, 0)))
259	root	1.12	retval = 16;
260	root	1.91	else if (!strcasecmp (cp, qbn1 = query_base_name (op, 1)))
261	root	1.12	retval = 16;
262			else if (op->custom_name && !strcasecmp (cp, op->custom_name))
263			retval = 15;
264	root	1.91	else if (!strncasecmp (cp, qbn0, strlen (cp)))
265	root	1.12	retval = 14;
266	root	1.91	else if (!strncasecmp (cp, qbn1, strlen (cp)))
267	root	1.12	retval = 14;
268			/* Do substring checks, so things like 'Str+1' will match.
269			* retval of these should perhaps be lower - they are lower
270			* then the specific strcasecmp aboves, but still higher than
271			* some other match criteria.
272			*/
273	root	1.91	else if (strstr (qbn1, cp))
274	root	1.12	retval = 12;
275	root	1.91	else if (strstr (qbn0, cp))
276	root	1.12	retval = 12;
277	root	1.91	else if (strstr (qsn, cp))
278	root	1.12	retval = 12;
279			/* Check against plural/non plural based on count. */
280			else if (count > 1 && !strcasecmp (cp, op->name_pl))
281	root	1.23	retval = 6;
282	root	1.12	else if (count == 1 && !strcasecmp (op->name, cp))
283	root	1.23	retval = 6;
284	root	1.12	/* base name matched - not bad */
285			else if (strcasecmp (cp, op->name) == 0 && !count)
286			retval = 4;
287			/* Check for partial custom name, but give a real low priority */
288	root	1.88	else if (op->custom_name.contains (cp))
289	root	1.12	retval = 3;
290
291			if (retval)
292			{
293			if (pl->type == PLAYER)
294			pl->contr->count = count;
295	root	1.23
296	root	1.12	return retval;
297	root	1.7	}
298	elmex	1.1	}
299	root	1.23
300	root	1.12	return 0;
301	elmex	1.1	}
302
303	root	1.92	//-GPL
304
305	root	1.104	void
306			archetype::do_delete ()
307			{
308			delete this;
309			}
310
311	root	1.63	archetype::archetype (const char *name)
312	root	1.12	{
313	root	1.63	arch = this;
314			this->archname = this->name = this->name_pl = name;
315	root	1.46	}
316	root	1.12
317	root	1.46	archetype::~archetype ()
318			{
319	root	1.63	unlink ();
320	elmex	1.1	}
321
322	root	1.63	void
323			archetype::link ()
324	elmex	1.1	{
325	root	1.63	if (!archetypes.contains (this))
326	root	1.74	{
327			archetypes.insert (this);
328			ht.insert (std::make_pair (archname, this));
329			}
330	elmex	1.1	}
331
332	root	1.46	void
333	root	1.63	archetype::unlink ()
334			{
335			if (archetypes.contains (this))
336	root	1.74	{
337			archetypes.erase (this);
338			ht.erase (archname);
339			}
340	root	1.63	}
341
342			/*
343			* Finds, using the hashtable, which archetype matches the given name.
344			* returns a pointer to the found archetype, otherwise NULL.
345			*/
346			archetype *
347			archetype::find (const char *name)
348			{
349			if (!name)
350			return 0;
351
352			auto (i, ht.find (name));
353
354			if (i == ht.end ())
355			return 0;
356			else
357			return i->second;
358			}
359
360	root	1.97	void
361			archetype::post_load_check ()
362			{
363	root	1.105	assert (("obj_original MUST NOT be set for archetypes", !flag [FLAG_OBJ_ORIGINAL]));
364
365			if (type == SKILL)
366			add_skill_archetype (this);
367
368	root	1.97	object::post_load_check ();
369			}
370
371	root	1.63	archetype *
372	root	1.53	archetype::read (object_thawer &f)
373	root	1.12	{
374	root	1.43	assert (f.kw == KW_object);
375
376	root	1.63	std::vector<archetype *> parts;
377	root	1.12
378	root	1.72	coroapi::cede_to_tick ();
379	root	1.52
380	root	1.49	for (;;)
381	root	1.43	{
382	root	1.73	archetype *at = new archetype (f.get_str ());
383	root	1.63
384	root	1.54	f.next ();
385	root	1.49
386	root	1.56	#if 0
387	root	1.63	// implementing it here in the server does neither allow multiple inheritence
388			// nor does it cleanly "just override". it would allow use in map files, though,
389	root	1.103	// and other resource files dynamically loaded (as opposed to being preprocessed).
390	root	1.63	// not that any of this is relevant as of yet...
391	root	1.55	if (f.kw == KW_inherit)
392			{
393			if (archetype *at = find (f.get_str ()))
394			*op = at->clone;
395			else
396			LOG (llevError, "archetype '%s' tries to inherit from non-existent archetype '%s'.\n",
397	root	1.63	&at->archname, f.get_str ());
398	root	1.55
399			f.next ();
400			}
401	root	1.56	#endif
402	root	1.55
403	root	1.69	loading_arch = at; // hack to tell parse_kv et al. to behave
404			bool parse_ok = at->parse_kv (f);
405			loading_arch = 0;
406
407			if (!parse_ok)
408	root	1.49	goto fail;
409
410	root	1.69	loading_arch = at; // hack to tell parse_kv et al. to behave
411	root	1.63	at->post_load_check ();
412	root	1.69	loading_arch = 0;
413	root	1.59
414	root	1.63	parts.push_back (at);
415	root	1.12
416	root	1.49	if (f.kw != KW_more)
417			break;
418	root	1.46
419	root	1.43	f.next ();
420	root	1.54
421			if (f.kw != KW_object)
422			{
423			f.parse_error ("more object");
424			goto fail;
425			}
426	root	1.49	}
427	root	1.43
428	root	1.49	{
429	root	1.63	archetype *new_head = parts.front ();
430			archetype *old_head = find (new_head->archname);
431
432	root	1.64	if (old_head && !old_head->is_head ())
433			{
434			LOG (llevError, "%s: unable to overwrite non-head archetype '%s' with head archetype, skipping.\n",
435			&new_head->archname, &old_head->archname);
436			goto fail;
437			}
438	root	1.63
439			// check that all archetypes belong to the same old object or are new
440	root	1.117	for (auto &&at : parts)
441	root	1.49	{
442	root	1.117	archetype *new_part = at;
443	root	1.63	archetype *old_part = find (new_part->archname);
444	root	1.49
445	root	1.63	if (old_part && old_part->head_ () != old_head)
446	root	1.49	{
447	root	1.63	LOG (llevError, "%s: unable to overwrite archetype '%s' with archetype of different object, skipping.\n",
448			&new_part->archname, &((archetype *)old_part->head_ ())->archname);
449	root	1.49	goto fail;
450			}
451			}
452
453	root	1.64	// assemble new chain
454	root	1.99	new_head->max_x = new_head->x;
455	root	1.49
456	root	1.63	archetype *less = new_head;
457	root	1.117	for (auto &&p = parts.begin () + 1; p != parts.end (); ++p)
458	root	1.49	{
459	root	1.63	archetype at = p;
460	root	1.49
461	root	1.74	// some flags get inherited from the head (probably a lot more)
462	root	1.67	// doing it here doesn't feel too cozy, but it allows code
463			// to ignore head checks for these flags, which saves time
464			at->flag [FLAG_ALIVE] = new_head->flag [FLAG_ALIVE];
465			at->flag [FLAG_NO_PICK] = new_head->flag [FLAG_NO_PICK];
466			at->flag [FLAG_MONSTER] = new_head->flag [FLAG_MONSTER];
467			at->flag [FLAG_IS_FLOOR] = new_head->flag [FLAG_IS_FLOOR];
468
469	root	1.74	new_head->max_x = max (new_head->max_x, at->x);
470	root	1.49
471	root	1.64	at->head = new_head;
472			less->more = at;
473			less = at;
474	root	1.63	}
475	root	1.49
476	root	1.73	postponed_arch.insert (postponed_arch.end (), parts.begin (), parts.end ());
477	root	1.53
478	root	1.63	return new_head;
479	root	1.49	}
480	root	1.43
481	root	1.49	fail:
482	root	1.117	for (auto &&at : parts)
483			at->destroy ();
484	root	1.43
485	root	1.53	return 0;
486	root	1.43	}
487
488	root	1.53	void
489	root	1.73	archetype::postpone_arch_ref (arch_ptr &ref, const_utf8_string other_arch)
490			{
491			ref = 0;
492			postponed_arch_ref.push_back (std::pair<arch_ptr *, shstr>(&ref, shstr (other_arch)));
493			}
494
495			void
496			archetype::commit_load ()
497	root	1.43	{
498	root	1.73	// unlink old archetypes and link in new ones */
499	root	1.117	for (auto &&at : postponed_arch)
500	root	1.73	{
501			if (archetype *old = find (at->archname))
502			old->unlink ();
503
504	root	1.74	allarch.push_back (at);
505
506	root	1.73	at->link ();
507	root	1.74	++dirtycnt;
508	root	1.73	}
509
510			postponed_arch.clear ();
511
512			// now resolve arch references
513	root	1.117	for (auto &&p : postponed_arch_ref) // not yet C++17
514	root	1.73	{
515	root	1.117	arch_ptr *ap = p.first;
516			archetype *at = find (p.second);
517	root	1.73
518			if (!at)
519	root	1.117	LOG (llevError, "unable to resolve postponed arch reference to '%s'", &p.second);
520	root	1.73
521			*ap = at;
522			}
523
524			postponed_arch_ref.clear ();
525
526			empty = find (shstr_empty_archetype);
527	elmex	1.1	}
528
529	root	1.74	void
530			archetype::gc ()
531			{
532	root	1.109	int cnt = max (1, min<int> (allarch.size () / 128, dirtycnt));
533	root	1.74	dirtycnt = max (0, dirtycnt - cnt);
534
535			do
536			{
537			static int idx;
538
539			if (idx >= allarch.size ())
540			if (idx)
541			idx = 0;
542			else
543			return;
544
545			archetype *at = allarch [idx];
546
547			if (at->refcnt_cnt () > 1) // all arches have ONE refcount from their object
548			++idx;
549			else
550			{
551	root	1.106	//LOG (llevDebug, "garbage collect arch %s", &at->archname);
552	root	1.79	assert (at->arch == at); // verify that refcnt == 1 is truly valid
553	root	1.74	allarch.erase (idx);
554	root	1.77
555			// break chain
556			for (object *op = at->head_ (); op; )
557			{
558			object *next = op->more;
559			op->head = 0;
560			op->more = 0;
561			op = next;
562			}
563
564	root	1.85	at->destroy ();
565	root	1.74	at->arch = 0;
566			}
567			}
568			while (--cnt);
569			}
570
571	root	1.70	object *
572			archetype::instance ()
573			{
574	root	1.80	object *op = clone ();
575			op->instantiate ();
576			return op;
577	root	1.70	}
578
579	root	1.92	//+GPL
580
581	elmex	1.1	/*
582			* Finds which archetype matches the given name, and returns a new
583			* object containing a copy of the archetype.
584			*/
585	root	1.12	object *
586	root	1.76	archetype::get (const char *name)
587			{
588	root	1.80	archetype *at = find (name);
589
590			if (!at)
591			return create_singularity (name);
592
593			return at->instance ();
594	root	1.76	}
595
596	elmex	1.1	/*
597			* Returns the first archetype using the given type.
598			* Used in treasure-generation.
599			*/
600	root	1.95	static archetype *
601	root	1.12	type_to_archetype (int type)
602			{
603	root	1.63	for_all_archetypes (at)
604			if (at->type == type && at->head_ () != at)
605	elmex	1.1	return at;
606	root	1.20
607			return 0;
608	elmex	1.1	}
609
610			/*
611			* Returns a new object copied from the first archetype matching
612			* the given type.
613			* Used in treasure-generation.
614			*/
615	root	1.12	object *
616			clone_arch (int type)
617			{
618	root	1.80	archetype *at = type_to_archetype (type);
619	elmex	1.1
620	root	1.80	if (!at)
621	root	1.12	{
622			LOG (llevError, "Can't clone archetype %d\n", type);
623	root	1.30	return 0;
624	root	1.12	}
625	root	1.20
626	root	1.80	return at->instance ();
627	elmex	1.1	}
628
629			/*
630			* member: make instance from class
631			*/
632	root	1.12	object *
633	root	1.15	object_create_arch (archetype *at)
634	elmex	1.1	{
635	root	1.20	object op, prev = 0, *head = 0;
636	elmex	1.1
637	root	1.12	while (at)
638			{
639	root	1.80	op = at->instance ();
640	root	1.63
641			op->x = at->x;
642			op->y = at->y;
643	root	1.20
644	root	1.12	if (head)
645			op->head = head, prev->more = op;
646	root	1.20
647	root	1.12	if (!head)
648			head = op;
649	root	1.20
650	root	1.12	prev = op;
651	root	1.63	at = (archetype *)at->more;
652	elmex	1.1	}
653	root	1.20
654	root	1.63	return head;
655	elmex	1.1	}
656
657	root	1.92	//-GPL
658