server/server/rune.C

/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2003 Mark Wedel & Crossfire Development Team
    Copyright (C) 1992 Frank Tore Johansen

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 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 GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    The authors can be reached via e-mail at <crossfire@schmorp.de>
*/

#include <global.h>
#ifndef __CEXTRACT__
# include <sproto.h>
#endif
#include <spells.h>


#ifndef sqr
# define sqr(x) ((x)*(x))
#endif


/*  peterm:  
 *  write_rune:
 *  op:  rune writer
 *  skop: skill object used for casting this rune
 *  dir:  orientation of rune, direction rune's contained spell will
 *          be cast in, if applicable
 *  inspell: spell object to put into the rune, can be null if doing
 *    a marking rune.
 *  level:  level of casting of the rune
 *  runename:  name of the rune or message displayed by the rune for
 *              a rune of marking 
 */

int
write_rune (object *op, object *caster, object *spell, int dir, const char *runename)
{
  object *tmp, *rune_spell, *rune;
  char buf[MAX_BUF];
  maptile *m;
  sint16 nx, ny;

  if (!dir)
    {
      dir = 1;
    }

  nx = op->x + freearr_x[dir];
  ny = op->y + freearr_y[dir];
  m = op->map;

  if (get_map_flags (m, &m, nx, ny, &nx, &ny))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Can't make a rune there!");
      return 0;
    }
  for (tmp = get_map_ob (m, nx, ny); tmp != NULL; tmp = tmp->above)
    if (tmp->type == RUNE)
      break;

  if (tmp)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You can't write a rune there.");
      return 0;
    }

  if (spell->other_arch)
    {
      rune_spell = arch_to_object (spell->other_arch);
    }
  else
    {
      /* Player specified spell.  The player has to know the spell, so
       * lets just look through the players inventory see if they know it
       * use the item_matched_string for our typical matching method.
       */
      int bestmatch = 0, ms;

      if (!runename || *runename == 0)
        {
          new_draw_info (NDI_UNIQUE, 0, op, "Write a rune of what?");
          return 0;
        }

      rune_spell = NULL;
      for (tmp = op->inv; tmp; tmp = tmp->below)
        {
          if (tmp->type == SPELL)
            {
              ms = item_matched_string (op, tmp, runename);
              if (ms > bestmatch)
                {
                  bestmatch = ms;
                  rune_spell = tmp;
                }
            }
        }
      if (!rune_spell)
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "You don't know any spell named %s", runename);
          return 0;
        }
      if (rune_spell->skill != spell->skill)
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "You can't cast %s with %s", &rune_spell->name, &spell->name);
          return 0;
        }
      if (caster->path_denied & spell->path_attuned)
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "%s belongs to a spell path denied to you.", &rune_spell->name);
          return 0;
        }
      if (caster_level (caster, rune_spell) < rune_spell->level)
        {
          new_draw_info_format (NDI_UNIQUE, 0, op, "%s is beyond your ability to cast!", &rune_spell->name);
          return 0;
        }
      if (SP_level_spellpoint_cost (caster, rune_spell, SPELL_MANA) > op->stats.sp)
        {
          new_draw_info (NDI_UNIQUE, 0, op, "You don't have enough mana.");
          return 0;
        }
      if (SP_level_spellpoint_cost (caster, rune_spell, SPELL_GRACE) > op->stats.grace)
        {
          new_draw_info (NDI_UNIQUE, 0, op, "You don't have enough grace.");
          return 0;
        }
      op->stats.grace -= SP_level_spellpoint_cost (caster, rune_spell, SPELL_GRACE);
      op->stats.sp -= SP_level_spellpoint_cost (caster, rune_spell, SPELL_MANA);
    }
  /* already proper rune.  Note this should only be the case if other_arch was set */
  if (rune_spell->type == RUNE)
    {
      rune = rune_spell;
    }
  else
    {
      rune = get_archetype (GENERIC_RUNE);
      sprintf (buf, "You set off a rune of %s\n", &rune_spell->name);
      rune->msg = buf;
      tmp = object::create ();
      rune_spell->copy_to (tmp);
      insert_ob_in_ob (tmp, rune);
      if (spell->face != blank_face)
        rune->face = spell->face;
    }
  rune->level = caster_level (caster, spell);
  rune->stats.Cha = rune->level / 2;    /* the invisibility parameter */
  rune->x = nx;
  rune->y = ny;
  rune->map = m;
  rune->direction = dir;        /* where any spell will go upon detonation */
  set_owner (rune, op);         /* runes without need no owner */
  set_spell_skill (op, caster, spell, rune);
  insert_ob_in_map (rune, m, op, 0);
  return 1;

}


/*  move_rune:  peterm
  comments on runes:
    rune->level     :       level at which rune will cast its spell.
    rune->hp        :       number of detonations before rune goes away
    rune->msg       :       message the rune displays when it goes off
    rune->direction :       direction it will cast a spell in
    rune->dam       :       damage the rune will do if it doesn't cast spells
    rune->attacktype:       type of damage it does, if not casting spells
    rune->other_arch:       spell in the rune
    rune->Cha       :       how hidden the rune is
    rune->maxhp     :       number of spells the rune casts
*/

void
move_rune (object *op)
{
  int det = 0;

  if (!op->level)
    {
      return;
    }                           /* runes of level zero cannot detonate. */
  det = op->invisible;
  if (!(rndm (0, MAX (1, (op->stats.Cha)) - 1)))
    {
      op->invisible = 0;
      op->speed_left -= 1;
    }
  else
    op->invisible = 1;
  if (op->invisible != det)
    update_object (op, UP_OBJ_FACE);
}


/*  peterm: rune_attack
 * function handles those runes which detonate but do not cast spells.  
 */


void
rune_attack (object *op, object *victim)
{
  if (victim)
    {
      hit_player (victim, op->stats.dam, op, op->attacktype, 1);

      if (victim->destroyed ())
        return;

      /*  if there's a disease in the needle, put it in the player */
      if (HAS_RANDOM_ITEMS (op))
        create_treasure (op->randomitems, op, 0, (victim->map ? victim->map->difficulty : 1), 0);

      if (op->inv && op->inv->type == DISEASE)
        {
          object *disease = op->inv;

          infect_object (victim, disease, 1);
          disease->destroy ();
        }
    }
  else
    hit_map (op, 0, op->attacktype, 1);
}

/*  This function generalizes attacks by runes/traps.  This ought to make
 *  it possible for runes to attack from the inventory, 
 *  it'll spring the trap on the victim.
 */
void
spring_trap (object *trap, object *victim)
{
  object *env;
  rv_vector rv;
  int i;

  /* Prevent recursion */
  if (trap->stats.hp <= 0)
    return;

  if (QUERY_FLAG (trap, FLAG_IS_LINKED))
    use_trigger (trap);

  /* Only living objects can trigger runes that don't cast spells, as
   * doing direct damage to a non-living object doesn't work anyway.
   * Typical example is an arrow attacking a door.
   */
  if (!QUERY_FLAG (victim, FLAG_ALIVE) && !trap->inv && !trap->other_arch)
    return;

  trap->stats.hp--;             /*decrement detcount */

  if (victim && victim->type == PLAYER)
    new_draw_info (NDI_UNIQUE, 0, victim, trap->msg);

  /*  Flash an image of the trap on the map so the poor sod
   *   knows what hit him.  
   */
  env = object_get_env_recursive (trap);

  /* If the victim is not next to this trap, don't set it off.
   * players shouldn't get hit by firing arrows at a door for example.
   * At the same time, the trap will stick around until detonated
   */
  get_rangevector (env, victim, &rv, 0);
  if (rv.distance > 1)
    return;

  trap_show (trap, env);

  /* Only if it is a spell do we proceed here */
  if ((trap->inv && trap->inv->type == SPELL) || (trap->other_arch && trap->other_arch->clone.type == SPELL))
    {

      if (trap->destroyed ())
        return;

      // breaks summon golem spells, which, for inexplicable reasons,
      // do not work like summon golem spells at all but still require
      // direction "0" to work at all.
      //if (trap->direction)
      //  rv.direction = trap->direction;

      for (i = 0; i < MAX (1, trap->stats.maxhp); i++)
        {
          if (trap->inv)
            cast_spell (env, trap, trap->direction, trap->inv, NULL);
          else
            {
              object *spell = arch_to_object (trap->other_arch);

              cast_spell (env, trap, trap->direction, spell, NULL);
              spell->destroy ();
            }
        }
    }
  else
    {
      rune_attack (trap, victim);
      if (trap->destroyed ())
        return;
    }

  if (trap->stats.hp <= 0)
    {
      trap->type = SIGN;        /* make the trap impotent */
      trap->stats.food = 20;    /* make it stick around until its spells are gone */
      SET_FLAG (trap, FLAG_IS_USED_UP);
    }
}

/* dispel_rune:  by peterm  
 * dispels the target rune, depending on the level of the actor
 * and the level of the rune  risk flag, if true, means that there is
 * a chance that the trap/rune will detonate 
 */
int
dispel_rune (object *op, object *caster, object *spell, object *skill, int dir)
{
  object *tmp, *tmp2;
  int searchflag = 1, mflags;
  sint16 x, y;
  maptile *m;

  x = op->x + freearr_x[dir];
  y = op->y + freearr_y[dir];
  m = op->map;

  mflags = get_map_flags (m, &m, x, y, &x, &y);

  /* Should we perhaps not allow player to disable traps if a monster/
   * player is standing on top? 
   */
  if (mflags & P_OUT_OF_MAP)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "There's nothing there!");
      return 0;
    }

  for (tmp = get_map_ob (m, x, y); tmp != NULL; tmp = tmp->above)
    {
      if (tmp->type == RUNE || tmp->type == TRAP)
        break;

      /* we could put a probability chance here, but since nothing happens
       * if you fail, no point on that.  I suppose we could do a level
       * comparison so low level players can't erase high level players runes.
       */
      if (tmp->type == SIGN && !strcmp (tmp->arch->name, "rune_mark"))
        {
          tmp->destroy ();
          new_draw_info (NDI_UNIQUE, 0, op, "You wipe out the rune of marking!");
          return 1;
        }

      /* now search tmp's inventory for traps
       * This is for chests, where the rune is in the chests inventory.
       */
      for (tmp2 = tmp->inv; tmp2 != NULL; tmp2 = tmp2->below)
        {
          if (tmp2->type == RUNE || tmp2->type == TRAP)
            {
              tmp = tmp2;
              searchflag = 0;
              break;
            }
        }
      if (!searchflag)
        break;
    }

  /* no rune there. */
  if (tmp == NULL)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "There's nothing there!");
      return 0;
    }
  trap_disarm (op, tmp, 0, skill);
  return 1;

}

int
trap_see (object *op, object *trap)
{
  int chance;

  chance = random_roll (0, 99, op, PREFER_HIGH);;

  /*  decide if we see the rune or not */
  if ((trap->stats.Cha == 1) || (chance > MIN (95, MAX (5, ((int) ((float) (op->map->difficulty
                                                                            + trap->level + trap->stats.Cha - op->level) / 10.0 * 50.0))))))
    {
      new_draw_info_format (NDI_UNIQUE, 0, op, "You spot a %s!", &trap->name);
      return 1;
    }
  return 0;
}

int
trap_show (object *trap, object *where)
{
  object *tmp2;

  if (where == NULL)
    return 0;
  tmp2 = get_archetype ("runedet");
  tmp2->face = &new_faces[GET_ANIMATION (trap, 0)];
  tmp2->x = where->x;
  tmp2->y = where->y;
  tmp2->map = where->map;
  insert_ob_in_map (tmp2, where->map, NULL, 0);
  return 1;

}


int
trap_disarm (object *disarmer, object *trap, int risk, object *skill)
{
  int trapworth;                /* need to compute the experience worth of the trap
                                   before we kill it */

  /* this formula awards a more reasonable amount of exp */
  trapworth = MAX (1, trap->level) * disarmer->map->difficulty *
    sqr (MAX (trap->stats.dam, trap->inv ? trap->inv->level : 1)) / skill->level;

  if (!(random_roll (0, (MAX (2, MIN (20, trap->level - skill->level + 5 - disarmer->stats.Dex / 2)) - 1), disarmer, PREFER_LOW)))
    {
      new_draw_info_format (NDI_UNIQUE, 0, disarmer, "You successfully disarm the %s!", &trap->name);
      trap->destroy (1);

      /* If it is your own trap, (or any players trap), don't you don't
       * get exp for it.
       */
      if (trap->owner && trap->owner->type != PLAYER && risk)
        return trapworth;
      else
        return 1;               /* give minimal exp and say success */
    }
  else
    {
      new_draw_info_format (NDI_UNIQUE, 0, disarmer, "You fail to disarm the %s.", &trap->name);
      if (!(random_roll (0, (MAX (2, skill->level - trap->level + disarmer->stats.Dex / 2 - 6)) - 1, disarmer, PREFER_LOW)) && risk)
        {
          new_draw_info (NDI_UNIQUE, 0, disarmer, "In fact, you set it off!");
          spring_trap (trap, disarmer);
        }
      return 0;
    }
}


/*  traps need to be adjusted for the difficulty of the map.  The
 * default traps are too strong for wimpy level 1 players, and 
 * unthreatening to anyone of high level 
 */

void
trap_adjust (object *trap, int difficulty)
{
  int i;

  /* now we set the trap level to match the difficulty of the level
   * the formula below will give a level from 1 to (2*difficulty) with 
   * a peak probability at difficulty 
   */

  trap->level = rndm (0, difficulty - 1) + rndm (0, difficulty - 1);
  if (trap->level < 1)
    trap->level = 1;

  /* set the hiddenness of the trap, similar formula to above */
  trap->stats.Cha = rndm (0, 19) + rndm (0, difficulty - 1) + rndm (0, difficulty - 1);

  if (!trap->other_arch && !trap->inv)
    {
      /* set the damage of the trap.
       * we get 0-4 pts of damage per level of difficulty of the map in
       * the trap
       */

      trap->stats.dam = 0;
      for (i = 0; i < difficulty; i++)
        trap->stats.dam += rndm (0, 4);

      /*  the poison trap special case */
      if (trap->attacktype & AT_POISON)
        {
          trap->stats.dam = rndm (0, difficulty - 1);
          if (trap->stats.dam < 1)
            trap->stats.dam = 1;
        }

      /*  so we get an appropriate amnt of exp for AT_DEATH traps */
      if (trap->attacktype & AT_DEATH)
        trap->stats.dam = 127;
    }

}
Revision:	1.9
Committed:	Tue Dec 12 21:39:57 2006 UTC (17 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.8:	+7 -8 lines
Log Message:	- more ooficiation - removed now superfluous remove calls
#	Content
1	/*
2	CrossFire, A Multiplayer game for X-windows
3
4	Copyright (C) 2003 Mark Wedel & Crossfire Development Team
5	Copyright (C) 1992 Frank Tore Johansen
6
7	This program is free software; you can redistribute it and/or modify
8	it under the terms of the GNU General Public License as published by
9	the Free Software Foundation; either version 2 of the License, or
10	(at your option) any later version.
11
12	This program is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.
16
17	You should have received a copy of the GNU General Public License
18	along with this program; if not, write to the Free Software
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20
21	The authors can be reached via e-mail at <crossfire@schmorp.de>
22	*/
23
24	#include <global.h>
25	#ifndef __CEXTRACT__
26	# include <sproto.h>
27	#endif
28	#include <spells.h>
29
30
31	#ifndef sqr
32	# define sqr(x) ((x)*(x))
33	#endif
34
35
36	/* peterm:
37	* write_rune:
38	* op: rune writer
39	* skop: skill object used for casting this rune
40	* dir: orientation of rune, direction rune's contained spell will
41	* be cast in, if applicable
42	* inspell: spell object to put into the rune, can be null if doing
43	* a marking rune.
44	* level: level of casting of the rune
45	* runename: name of the rune or message displayed by the rune for
46	* a rune of marking
47	*/
48
49	int
50	write_rune (object op, object caster, object spell, int dir, const char runename)
51	{
52	object tmp, rune_spell, *rune;
53	char buf[MAX_BUF];
54	maptile *m;
55	sint16 nx, ny;
56
57	if (!dir)
58	{
59	dir = 1;
60	}
61
62	nx = op->x + freearr_x[dir];
63	ny = op->y + freearr_y[dir];
64	m = op->map;
65
66	if (get_map_flags (m, &m, nx, ny, &nx, &ny))
67	{
68	new_draw_info (NDI_UNIQUE, 0, op, "Can't make a rune there!");
69	return 0;
70	}
71	for (tmp = get_map_ob (m, nx, ny); tmp != NULL; tmp = tmp->above)
72	if (tmp->type == RUNE)
73	break;
74
75	if (tmp)
76	{
77	new_draw_info (NDI_UNIQUE, 0, op, "You can't write a rune there.");
78	return 0;
79	}
80
81	if (spell->other_arch)
82	{
83	rune_spell = arch_to_object (spell->other_arch);
84	}
85	else
86	{
87	/* Player specified spell. The player has to know the spell, so
88	* lets just look through the players inventory see if they know it
89	* use the item_matched_string for our typical matching method.
90	*/
91	int bestmatch = 0, ms;
92
93	if (!runename \|\| *runename == 0)
94	{
95	new_draw_info (NDI_UNIQUE, 0, op, "Write a rune of what?");
96	return 0;
97	}
98
99	rune_spell = NULL;
100	for (tmp = op->inv; tmp; tmp = tmp->below)
101	{
102	if (tmp->type == SPELL)
103	{
104	ms = item_matched_string (op, tmp, runename);
105	if (ms > bestmatch)
106	{
107	bestmatch = ms;
108	rune_spell = tmp;
109	}
110	}
111	}
112	if (!rune_spell)
113	{
114	new_draw_info_format (NDI_UNIQUE, 0, op, "You don't know any spell named %s", runename);
115	return 0;
116	}
117	if (rune_spell->skill != spell->skill)
118	{
119	new_draw_info_format (NDI_UNIQUE, 0, op, "You can't cast %s with %s", &rune_spell->name, &spell->name);
120	return 0;
121	}
122	if (caster->path_denied & spell->path_attuned)
123	{
124	new_draw_info_format (NDI_UNIQUE, 0, op, "%s belongs to a spell path denied to you.", &rune_spell->name);
125	return 0;
126	}
127	if (caster_level (caster, rune_spell) < rune_spell->level)
128	{
129	new_draw_info_format (NDI_UNIQUE, 0, op, "%s is beyond your ability to cast!", &rune_spell->name);
130	return 0;
131	}
132	if (SP_level_spellpoint_cost (caster, rune_spell, SPELL_MANA) > op->stats.sp)
133	{
134	new_draw_info (NDI_UNIQUE, 0, op, "You don't have enough mana.");
135	return 0;
136	}
137	if (SP_level_spellpoint_cost (caster, rune_spell, SPELL_GRACE) > op->stats.grace)
138	{
139	new_draw_info (NDI_UNIQUE, 0, op, "You don't have enough grace.");
140	return 0;
141	}
142	op->stats.grace -= SP_level_spellpoint_cost (caster, rune_spell, SPELL_GRACE);
143	op->stats.sp -= SP_level_spellpoint_cost (caster, rune_spell, SPELL_MANA);
144	}
145	/* already proper rune. Note this should only be the case if other_arch was set */
146	if (rune_spell->type == RUNE)
147	{
148	rune = rune_spell;
149	}
150	else
151	{
152	rune = get_archetype (GENERIC_RUNE);
153	sprintf (buf, "You set off a rune of %s\n", &rune_spell->name);
154	rune->msg = buf;
155	tmp = object::create ();
156	rune_spell->copy_to (tmp);
157	insert_ob_in_ob (tmp, rune);
158	if (spell->face != blank_face)
159	rune->face = spell->face;
160	}
161	rune->level = caster_level (caster, spell);
162	rune->stats.Cha = rune->level / 2; /* the invisibility parameter */
163	rune->x = nx;
164	rune->y = ny;
165	rune->map = m;
166	rune->direction = dir; /* where any spell will go upon detonation */
167	set_owner (rune, op); /* runes without need no owner */
168	set_spell_skill (op, caster, spell, rune);
169	insert_ob_in_map (rune, m, op, 0);
170	return 1;
171
172	}
173
174
175
176	/* move_rune: peterm
177	comments on runes:
178	rune->level : level at which rune will cast its spell.
179	rune->hp : number of detonations before rune goes away
180	rune->msg : message the rune displays when it goes off
181	rune->direction : direction it will cast a spell in
182	rune->dam : damage the rune will do if it doesn't cast spells
183	rune->attacktype: type of damage it does, if not casting spells
184	rune->other_arch: spell in the rune
185	rune->Cha : how hidden the rune is
186	rune->maxhp : number of spells the rune casts
187	*/
188
189	void
190	move_rune (object *op)
191	{
192	int det = 0;
193
194	if (!op->level)
195	{
196	return;
197	} /* runes of level zero cannot detonate. */
198	det = op->invisible;
199	if (!(rndm (0, MAX (1, (op->stats.Cha)) - 1)))
200	{
201	op->invisible = 0;
202	op->speed_left -= 1;
203	}
204	else
205	op->invisible = 1;
206	if (op->invisible != det)
207	update_object (op, UP_OBJ_FACE);
208	}
209
210
211	/* peterm: rune_attack
212	* function handles those runes which detonate but do not cast spells.
213	*/
214
215
216	void
217	rune_attack (object op, object victim)
218	{
219	if (victim)
220	{
221	hit_player (victim, op->stats.dam, op, op->attacktype, 1);
222
223	if (victim->destroyed ())
224	return;
225
226	/* if there's a disease in the needle, put it in the player */
227	if (HAS_RANDOM_ITEMS (op))
228	create_treasure (op->randomitems, op, 0, (victim->map ? victim->map->difficulty : 1), 0);
229
230	if (op->inv && op->inv->type == DISEASE)
231	{
232	object *disease = op->inv;
233
234	infect_object (victim, disease, 1);
235	disease->destroy ();
236	}
237	}
238	else
239	hit_map (op, 0, op->attacktype, 1);
240	}
241
242	/* This function generalizes attacks by runes/traps. This ought to make
243	* it possible for runes to attack from the inventory,
244	* it'll spring the trap on the victim.
245	*/
246	void
247	spring_trap (object trap, object victim)
248	{
249	object *env;
250	rv_vector rv;
251	int i;
252
253	/* Prevent recursion */
254	if (trap->stats.hp <= 0)
255	return;
256
257	if (QUERY_FLAG (trap, FLAG_IS_LINKED))
258	use_trigger (trap);
259
260	/* Only living objects can trigger runes that don't cast spells, as
261	* doing direct damage to a non-living object doesn't work anyway.
262	* Typical example is an arrow attacking a door.
263	*/
264	if (!QUERY_FLAG (victim, FLAG_ALIVE) && !trap->inv && !trap->other_arch)
265	return;
266
267	trap->stats.hp--; /decrement detcount /
268
269	if (victim && victim->type == PLAYER)
270	new_draw_info (NDI_UNIQUE, 0, victim, trap->msg);
271
272	/* Flash an image of the trap on the map so the poor sod
273	* knows what hit him.
274	*/
275	env = object_get_env_recursive (trap);
276
277	/* If the victim is not next to this trap, don't set it off.
278	* players shouldn't get hit by firing arrows at a door for example.
279	* At the same time, the trap will stick around until detonated
280	*/
281	get_rangevector (env, victim, &rv, 0);
282	if (rv.distance > 1)
283	return;
284
285	trap_show (trap, env);
286
287	/* Only if it is a spell do we proceed here */
288	if ((trap->inv && trap->inv->type == SPELL) \|\| (trap->other_arch && trap->other_arch->clone.type == SPELL))
289	{
290
291	if (trap->destroyed ())
292	return;
293
294	// breaks summon golem spells, which, for inexplicable reasons,
295	// do not work like summon golem spells at all but still require
296	// direction "0" to work at all.
297	//if (trap->direction)
298	// rv.direction = trap->direction;
299
300	for (i = 0; i < MAX (1, trap->stats.maxhp); i++)
301	{
302	if (trap->inv)
303	cast_spell (env, trap, trap->direction, trap->inv, NULL);
304	else
305	{
306	object *spell = arch_to_object (trap->other_arch);
307
308	cast_spell (env, trap, trap->direction, spell, NULL);
309	spell->destroy ();
310	}
311	}
312	}
313	else
314	{
315	rune_attack (trap, victim);
316	if (trap->destroyed ())
317	return;
318	}
319
320	if (trap->stats.hp <= 0)
321	{
322	trap->type = SIGN; /* make the trap impotent */
323	trap->stats.food = 20; /* make it stick around until its spells are gone */
324	SET_FLAG (trap, FLAG_IS_USED_UP);
325	}
326	}
327
328	/* dispel_rune: by peterm
329	* dispels the target rune, depending on the level of the actor
330	* and the level of the rune risk flag, if true, means that there is
331	* a chance that the trap/rune will detonate
332	*/
333	int
334	dispel_rune (object op, object caster, object spell, object skill, int dir)
335	{
336	object tmp, tmp2;
337	int searchflag = 1, mflags;
338	sint16 x, y;
339	maptile *m;
340
341	x = op->x + freearr_x[dir];
342	y = op->y + freearr_y[dir];
343	m = op->map;
344
345	mflags = get_map_flags (m, &m, x, y, &x, &y);
346
347	/* Should we perhaps not allow player to disable traps if a monster/
348	* player is standing on top?
349	*/
350	if (mflags & P_OUT_OF_MAP)
351	{
352	new_draw_info (NDI_UNIQUE, 0, op, "There's nothing there!");
353	return 0;
354	}
355
356	for (tmp = get_map_ob (m, x, y); tmp != NULL; tmp = tmp->above)
357	{
358	if (tmp->type == RUNE \|\| tmp->type == TRAP)
359	break;
360
361	/* we could put a probability chance here, but since nothing happens
362	* if you fail, no point on that. I suppose we could do a level
363	* comparison so low level players can't erase high level players runes.
364	*/
365	if (tmp->type == SIGN && !strcmp (tmp->arch->name, "rune_mark"))
366	{
367	tmp->destroy ();
368	new_draw_info (NDI_UNIQUE, 0, op, "You wipe out the rune of marking!");
369	return 1;
370	}
371
372	/* now search tmp's inventory for traps
373	* This is for chests, where the rune is in the chests inventory.
374	*/
375	for (tmp2 = tmp->inv; tmp2 != NULL; tmp2 = tmp2->below)
376	{
377	if (tmp2->type == RUNE \|\| tmp2->type == TRAP)
378	{
379	tmp = tmp2;
380	searchflag = 0;
381	break;
382	}
383	}
384	if (!searchflag)
385	break;
386	}
387
388	/* no rune there. */
389	if (tmp == NULL)
390	{
391	new_draw_info (NDI_UNIQUE, 0, op, "There's nothing there!");
392	return 0;
393	}
394	trap_disarm (op, tmp, 0, skill);
395	return 1;
396
397	}
398
399	int
400	trap_see (object op, object trap)
401	{
402	int chance;
403
404	chance = random_roll (0, 99, op, PREFER_HIGH);;
405
406	/* decide if we see the rune or not */
407	if ((trap->stats.Cha == 1) \|\| (chance > MIN (95, MAX (5, ((int) ((float) (op->map->difficulty
408	+ trap->level + trap->stats.Cha - op->level) / 10.0 * 50.0))))))
409	{
410	new_draw_info_format (NDI_UNIQUE, 0, op, "You spot a %s!", &trap->name);
411	return 1;
412	}
413	return 0;
414	}
415
416	int
417	trap_show (object trap, object where)
418	{
419	object *tmp2;
420
421	if (where == NULL)
422	return 0;
423	tmp2 = get_archetype ("runedet");
424	tmp2->face = &new_faces[GET_ANIMATION (trap, 0)];
425	tmp2->x = where->x;
426	tmp2->y = where->y;
427	tmp2->map = where->map;
428	insert_ob_in_map (tmp2, where->map, NULL, 0);
429	return 1;
430
431	}
432
433
434	int
435	trap_disarm (object disarmer, object trap, int risk, object *skill)
436	{
437	int trapworth; /* need to compute the experience worth of the trap
438	before we kill it */
439
440	/* this formula awards a more reasonable amount of exp */
441	trapworth = MAX (1, trap->level) * disarmer->map->difficulty *
442	sqr (MAX (trap->stats.dam, trap->inv ? trap->inv->level : 1)) / skill->level;
443
444	if (!(random_roll (0, (MAX (2, MIN (20, trap->level - skill->level + 5 - disarmer->stats.Dex / 2)) - 1), disarmer, PREFER_LOW)))
445	{
446	new_draw_info_format (NDI_UNIQUE, 0, disarmer, "You successfully disarm the %s!", &trap->name);
447	trap->destroy (1);
448
449	/* If it is your own trap, (or any players trap), don't you don't
450	* get exp for it.
451	*/
452	if (trap->owner && trap->owner->type != PLAYER && risk)
453	return trapworth;
454	else
455	return 1; /* give minimal exp and say success */
456	}
457	else
458	{
459	new_draw_info_format (NDI_UNIQUE, 0, disarmer, "You fail to disarm the %s.", &trap->name);
460	if (!(random_roll (0, (MAX (2, skill->level - trap->level + disarmer->stats.Dex / 2 - 6)) - 1, disarmer, PREFER_LOW)) && risk)
461	{
462	new_draw_info (NDI_UNIQUE, 0, disarmer, "In fact, you set it off!");
463	spring_trap (trap, disarmer);
464	}
465	return 0;
466	}
467	}
468
469
470	/* traps need to be adjusted for the difficulty of the map. The
471	* default traps are too strong for wimpy level 1 players, and
472	* unthreatening to anyone of high level
473	*/
474
475	void
476	trap_adjust (object *trap, int difficulty)
477	{
478	int i;
479
480	/* now we set the trap level to match the difficulty of the level
481	* the formula below will give a level from 1 to (2*difficulty) with
482	* a peak probability at difficulty
483	*/
484
485	trap->level = rndm (0, difficulty - 1) + rndm (0, difficulty - 1);
486	if (trap->level < 1)
487	trap->level = 1;
488
489	/* set the hiddenness of the trap, similar formula to above */
490	trap->stats.Cha = rndm (0, 19) + rndm (0, difficulty - 1) + rndm (0, difficulty - 1);
491
492	if (!trap->other_arch && !trap->inv)
493	{
494	/* set the damage of the trap.
495	* we get 0-4 pts of damage per level of difficulty of the map in
496	* the trap
497	*/
498
499	trap->stats.dam = 0;
500	for (i = 0; i < difficulty; i++)
501	trap->stats.dam += rndm (0, 4);
502
503	/* the poison trap special case */
504	if (trap->attacktype & AT_POISON)
505	{
506	trap->stats.dam = rndm (0, difficulty - 1);
507	if (trap->stats.dam < 1)
508	trap->stats.dam = 1;
509	}
510
511	/* so we get an appropriate amnt of exp for AT_DEATH traps */
512	if (trap->attacktype & AT_DEATH)
513	trap->stats.dam = 127;
514	}
515
516	}