server/server/rune.C


/*
 * static char *rcsid_rune_c =
 *   "$Id: rune.C,v 1.3 2006-09-03 00:18:42 root Exp $";
 */

/*
    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-devel@real-time.com
*/

#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];
  mapstruct *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 = get_object ();
      copy_object (rune_spell, 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)
    {
      tag_t tag = victim->count;

      hit_player (victim, op->stats.dam, op, op->attacktype, 1);
      if (was_destroyed (victim, tag))
        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);
          remove_ob (disease);
          free_object (disease);
        }
    }
  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;
  tag_t trap_tag = trap->count;
  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 (was_destroyed (trap, trap_tag))
        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);
              free_object (spell);
            }
        }
    }
  else
    {
      rune_attack (trap, victim);
      if (was_destroyed (trap, trap_tag))
        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;
  mapstruct *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"))
        {
          remove_ob (tmp);
          free_object (tmp);
          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);
      destroy_object (trap);
      /* 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:	1.4
Committed:	Sun Sep 10 15:59:57 2006 UTC (17 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.3:	+384 -324 lines
Log Message:	indent
#	Content
1
2	/*
3	* static char *rcsid_rune_c =
4	* "$Id: rune.C,v 1.3 2006-09-03 00:18:42 root Exp $";
5	*/
6
7	/*
8	CrossFire, A Multiplayer game for X-windows
9
10	Copyright (C) 2003 Mark Wedel & Crossfire Development Team
11	Copyright (C) 1992 Frank Tore Johansen
12
13	This program is free software; you can redistribute it and/or modify
14	it under the terms of the GNU General Public License as published by
15	the Free Software Foundation; either version 2 of the License, or
16	(at your option) any later version.
17
18	This program is distributed in the hope that it will be useful,
19	but WITHOUT ANY WARRANTY; without even the implied warranty of
20	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21	GNU General Public License for more details.
22
23	You should have received a copy of the GNU General Public License
24	along with this program; if not, write to the Free Software
25	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26
27	The authors can be reached via e-mail at crossfire-devel@real-time.com
28	*/
29
30	#include <global.h>
31	#ifndef __CEXTRACT__
32	# include <sproto.h>
33	#endif
34	#include <spells.h>
35
36
37	#ifndef sqr
38	# define sqr(x) ((x)*(x))
39	#endif
40
41
42	/* peterm:
43	* write_rune:
44	* op: rune writer
45	* skop: skill object used for casting this rune
46	* dir: orientation of rune, direction rune's contained spell will
47	* be cast in, if applicable
48	* inspell: spell object to put into the rune, can be null if doing
49	* a marking rune.
50	* level: level of casting of the rune
51	* runename: name of the rune or message displayed by the rune for
52	* a rune of marking
53	*/
54
55	int
56	write_rune (object op, object caster, object spell, int dir, const char runename)
57	{
58	object tmp, rune_spell, *rune;
59	char buf[MAX_BUF];
60	mapstruct *m;
61	sint16 nx, ny;
62
63	if (!dir)
64	{
65	dir = 1;
66	}
67
68	nx = op->x + freearr_x[dir];
69	ny = op->y + freearr_y[dir];
70	m = op->map;
71
72	if (get_map_flags (m, &m, nx, ny, &nx, &ny))
73	{
74	new_draw_info (NDI_UNIQUE, 0, op, "Can't make a rune there!");
75	return 0;
76	}
77	for (tmp = get_map_ob (m, nx, ny); tmp != NULL; tmp = tmp->above)
78	if (tmp->type == RUNE)
79	break;
80
81	if (tmp)
82	{
83	new_draw_info (NDI_UNIQUE, 0, op, "You can't write a rune there.");
84	return 0;
85	}
86
87	if (spell->other_arch)
88	{
89	rune_spell = arch_to_object (spell->other_arch);
90	}
91	else
92	{
93	/* Player specified spell. The player has to know the spell, so
94	* lets just look through the players inventory see if they know it
95	* use the item_matched_string for our typical matching method.
96	*/
97	int bestmatch = 0, ms;
98
99	if (!runename \|\| *runename == 0)
100	{
101	new_draw_info (NDI_UNIQUE, 0, op, "Write a rune of what?");
102	return 0;
103	}
104
105	rune_spell = NULL;
106	for (tmp = op->inv; tmp; tmp = tmp->below)
107	{
108	if (tmp->type == SPELL)
109	{
110	ms = item_matched_string (op, tmp, runename);
111	if (ms > bestmatch)
112	{
113	bestmatch = ms;
114	rune_spell = tmp;
115	}
116	}
117	}
118	if (!rune_spell)
119	{
120	new_draw_info_format (NDI_UNIQUE, 0, op, "You don't know any spell named %s", runename);
121	return 0;
122	}
123	if (rune_spell->skill != spell->skill)
124	{
125	new_draw_info_format (NDI_UNIQUE, 0, op, "You can't cast %s with %s", &rune_spell->name, &spell->name);
126	return 0;
127	}
128	if (caster->path_denied & spell->path_attuned)
129	{
130	new_draw_info_format (NDI_UNIQUE, 0, op, "%s belongs to a spell path denied to you.", &rune_spell->name);
131	return 0;
132	}
133	if (caster_level (caster, rune_spell) < rune_spell->level)
134	{
135	new_draw_info_format (NDI_UNIQUE, 0, op, "%s is beyond your ability to cast!", &rune_spell->name);
136	return 0;
137	}
138	if (SP_level_spellpoint_cost (caster, rune_spell, SPELL_MANA) > op->stats.sp)
139	{
140	new_draw_info (NDI_UNIQUE, 0, op, "You don't have enough mana.");
141	return 0;
142	}
143	if (SP_level_spellpoint_cost (caster, rune_spell, SPELL_GRACE) > op->stats.grace)
144	{
145	new_draw_info (NDI_UNIQUE, 0, op, "You don't have enough grace.");
146	return 0;
147	}
148	op->stats.grace -= SP_level_spellpoint_cost (caster, rune_spell, SPELL_GRACE);
149	op->stats.sp -= SP_level_spellpoint_cost (caster, rune_spell, SPELL_MANA);
150	}
151	/* already proper rune. Note this should only be the case if other_arch was set */
152	if (rune_spell->type == RUNE)
153	{
154	rune = rune_spell;
155	}
156	else
157	{
158	rune = get_archetype (GENERIC_RUNE);
159	sprintf (buf, "You set off a rune of %s\n", &rune_spell->name);
160	rune->msg = buf;
161	tmp = get_object ();
162	copy_object (rune_spell, tmp);
163	insert_ob_in_ob (tmp, rune);
164	if (spell->face != blank_face)
165	rune->face = spell->face;
166	}
167	rune->level = caster_level (caster, spell);
168	rune->stats.Cha = rune->level / 2; /* the invisibility parameter */
169	rune->x = nx;
170	rune->y = ny;
171	rune->map = m;
172	rune->direction = dir; /* where any spell will go upon detonation */
173	set_owner (rune, op); /* runes without need no owner */
174	set_spell_skill (op, caster, spell, rune);
175	insert_ob_in_map (rune, m, op, 0);
176	return 1;
177
178	}
179
180
181
182	/* move_rune: peterm
183	comments on runes:
184	rune->level : level at which rune will cast its spell.
185	rune->hp : number of detonations before rune goes away
186	rune->msg : message the rune displays when it goes off
187	rune->direction : direction it will cast a spell in
188	rune->dam : damage the rune will do if it doesn't cast spells
189	rune->attacktype: type of damage it does, if not casting spells
190	rune->other_arch: spell in the rune
191	rune->Cha : how hidden the rune is
192	rune->maxhp : number of spells the rune casts
193	*/
194
195	void
196	move_rune (object *op)
197	{
198	int det = 0;
199
200	if (!op->level)
201	{
202	return;
203	} /* runes of level zero cannot detonate. */
204	det = op->invisible;
205	if (!(rndm (0, MAX (1, (op->stats.Cha)) - 1)))
206	{
207	op->invisible = 0;
208	op->speed_left -= 1;
209	}
210	else
211	op->invisible = 1;
212	if (op->invisible != det)
213	update_object (op, UP_OBJ_FACE);
214	}
215
216
217	/* peterm: rune_attack
218	* function handles those runes which detonate but do not cast spells.
219	*/
220
221
222	void
223	rune_attack (object op, object victim)
224	{
225	if (victim)
226	{
227	tag_t tag = victim->count;
228
229	hit_player (victim, op->stats.dam, op, op->attacktype, 1);
230	if (was_destroyed (victim, tag))
231	return;
232	/* if there's a disease in the needle, put it in the player */
233	if (HAS_RANDOM_ITEMS (op))
234	create_treasure (op->randomitems, op, 0, (victim->map ? victim->map->difficulty : 1), 0);
235	if (op->inv && op->inv->type == DISEASE)
236	{
237	object *disease = op->inv;
238
239	infect_object (victim, disease, 1);
240	remove_ob (disease);
241	free_object (disease);
242	}
243	}
244	else
245	hit_map (op, 0, op->attacktype, 1);
246	}
247
248	/* This function generalizes attacks by runes/traps. This ought to make
249	* it possible for runes to attack from the inventory,
250	* it'll spring the trap on the victim.
251	*/
252	void
253	spring_trap (object trap, object victim)
254	{
255	object *env;
256	tag_t trap_tag = trap->count;
257	rv_vector rv;
258	int i;
259
260	/* Prevent recursion */
261	if (trap->stats.hp <= 0)
262	return;
263
264	if (QUERY_FLAG (trap, FLAG_IS_LINKED))
265	use_trigger (trap);
266
267	/* Only living objects can trigger runes that don't cast spells, as
268	* doing direct damage to a non-living object doesn't work anyway.
269	* Typical example is an arrow attacking a door.
270	*/
271	if (!QUERY_FLAG (victim, FLAG_ALIVE) && !trap->inv && !trap->other_arch)
272	return;
273
274	trap->stats.hp--; /decrement detcount /
275
276	if (victim && victim->type == PLAYER)
277	new_draw_info (NDI_UNIQUE, 0, victim, trap->msg);
278
279	/* Flash an image of the trap on the map so the poor sod
280	* knows what hit him.
281	*/
282	env = object_get_env_recursive (trap);
283
284	/* If the victim is not next to this trap, don't set it off.
285	* players shouldn't get hit by firing arrows at a door for example.
286	* At the same time, the trap will stick around until detonated
287	*/
288	get_rangevector (env, victim, &rv, 0);
289	if (rv.distance > 1)
290	return;
291
292	trap_show (trap, env);
293
294	/* Only if it is a spell do we proceed here */
295	if ((trap->inv && trap->inv->type == SPELL) \|\| (trap->other_arch && trap->other_arch->clone.type == SPELL))
296	{
297
298	if (was_destroyed (trap, trap_tag))
299	return;
300
301	// breaks summon golem spells, which, for inexplicable reasons,
302	// do not work like summon golem spells at all but still require
303	// direction "0" to work at all.
304	//if (trap->direction)
305	// rv.direction = trap->direction;
306
307	for (i = 0; i < MAX (1, trap->stats.maxhp); i++)
308	{
309	if (trap->inv)
310	cast_spell (env, trap, trap->direction, trap->inv, NULL);
311	else
312	{
313	object *spell = arch_to_object (trap->other_arch);
314
315	cast_spell (env, trap, trap->direction, spell, NULL);
316	free_object (spell);
317	}
318	}
319	}
320	else
321	{
322	rune_attack (trap, victim);
323	if (was_destroyed (trap, trap_tag))
324	return;
325	}
326
327	if (trap->stats.hp <= 0)
328	{
329	trap->type = SIGN; /* make the trap impotent */
330	trap->stats.food = 20; /* make it stick around until its spells are gone */
331	SET_FLAG (trap, FLAG_IS_USED_UP);
332	}
333	}
334
335	/* dispel_rune: by peterm
336	* dispels the target rune, depending on the level of the actor
337	* and the level of the rune risk flag, if true, means that there is
338	* a chance that the trap/rune will detonate
339	*/
340	int
341	dispel_rune (object op, object caster, object spell, object skill, int dir)
342	{
343	object tmp, tmp2;
344	int searchflag = 1, mflags;
345	sint16 x, y;
346	mapstruct *m;
347
348	x = op->x + freearr_x[dir];
349	y = op->y + freearr_y[dir];
350	m = op->map;
351
352	mflags = get_map_flags (m, &m, x, y, &x, &y);
353
354	/* Should we perhaps not allow player to disable traps if a monster/
355	* player is standing on top?
356	*/
357	if (mflags & P_OUT_OF_MAP)
358	{
359	new_draw_info (NDI_UNIQUE, 0, op, "There's nothing there!");
360	return 0;
361	}
362
363	for (tmp = get_map_ob (m, x, y); tmp != NULL; tmp = tmp->above)
364	{
365	if (tmp->type == RUNE \|\| tmp->type == TRAP)
366	break;
367
368	/* we could put a probability chance here, but since nothing happens
369	* if you fail, no point on that. I suppose we could do a level
370	* comparison so low level players can't erase high level players runes.
371	*/
372	if (tmp->type == SIGN && !strcmp (tmp->arch->name, "rune_mark"))
373	{
374	remove_ob (tmp);
375	free_object (tmp);
376	new_draw_info (NDI_UNIQUE, 0, op, "You wipe out the rune of marking!");
377	return 1;
378	}
379
380	/* now search tmp's inventory for traps
381	* This is for chests, where the rune is in the chests inventory.
382	*/
383	for (tmp2 = tmp->inv; tmp2 != NULL; tmp2 = tmp2->below)
384	{
385	if (tmp2->type == RUNE \|\| tmp2->type == TRAP)
386	{
387	tmp = tmp2;
388	searchflag = 0;
389	break;
390	}
391	}
392	if (!searchflag)
393	break;
394	}
395
396	/* no rune there. */
397	if (tmp == NULL)
398	{
399	new_draw_info (NDI_UNIQUE, 0, op, "There's nothing there!");
400	return 0;
401	}
402	trap_disarm (op, tmp, 0, skill);
403	return 1;
404
405	}
406
407	int
408	trap_see (object op, object trap)
409	{
410	int chance;
411
412	chance = random_roll (0, 99, op, PREFER_HIGH);;
413
414	/* decide if we see the rune or not */
415	if ((trap->stats.Cha == 1) \|\| (chance > MIN (95, MAX (5, ((int) ((float) (op->map->difficulty
416	+ trap->level + trap->stats.Cha - op->level) / 10.0 * 50.0))))))
417	{
418	new_draw_info_format (NDI_UNIQUE, 0, op, "You spot a %s!", &trap->name);
419	return 1;
420	}
421	return 0;
422	}
423
424	int
425	trap_show (object trap, object where)
426	{
427	object *tmp2;
428
429	if (where == NULL)
430	return 0;
431	tmp2 = get_archetype ("runedet");
432	tmp2->face = &new_faces[GET_ANIMATION (trap, 0)];
433	tmp2->x = where->x;
434	tmp2->y = where->y;
435	tmp2->map = where->map;
436	insert_ob_in_map (tmp2, where->map, NULL, 0);
437	return 1;
438
439	}
440
441
442	int
443	trap_disarm (object disarmer, object trap, int risk, object *skill)
444	{
445	int trapworth; /* need to compute the experience worth of the trap
446	before we kill it */
447
448	/* this formula awards a more reasonable amount of exp */
449	trapworth = MAX (1, trap->level) * disarmer->map->difficulty *
450	sqr (MAX (trap->stats.dam, trap->inv ? trap->inv->level : 1)) / skill->level;
451
452	if (!(random_roll (0, (MAX (2, MIN (20, trap->level - skill->level + 5 - disarmer->stats.Dex / 2)) - 1), disarmer, PREFER_LOW)))
453	{
454	new_draw_info_format (NDI_UNIQUE, 0, disarmer, "You successfully disarm the %s!", &trap->name);
455	destroy_object (trap);
456	/* If it is your own trap, (or any players trap), don't you don't
457	* get exp for it.
458	*/
459	if (trap->owner && trap->owner->type != PLAYER && risk)
460	return trapworth;
461	else
462	return 1; /* give minimal exp and say success */
463	}
464	else
465	{
466	new_draw_info_format (NDI_UNIQUE, 0, disarmer, "You fail to disarm the %s.", &trap->name);
467	if (!(random_roll (0, (MAX (2, skill->level - trap->level + disarmer->stats.Dex / 2 - 6)) - 1, disarmer, PREFER_LOW)) && risk)
468	{
469	new_draw_info (NDI_UNIQUE, 0, disarmer, "In fact, you set it off!");
470	spring_trap (trap, disarmer);
471	}
472	return 0;
473	}
474	}
475
476
477	/* traps need to be adjusted for the difficulty of the map. The
478	* default traps are too strong for wimpy level 1 players, and
479	* unthreatening to anyone of high level
480	*/
481
482	void
483	trap_adjust (object *trap, int difficulty)
484	{
485	int i;
486
487	/* now we set the trap level to match the difficulty of the level
488	* the formula below will give a level from 1 to (2*difficulty) with
489	* a peak probability at difficulty
490	*/
491
492	trap->level = rndm (0, difficulty - 1) + rndm (0, difficulty - 1);
493	if (trap->level < 1)
494	trap->level = 1;
495
496	/* set the hiddenness of the trap, similar formula to above */
497	trap->stats.Cha = rndm (0, 19) + rndm (0, difficulty - 1) + rndm (0, difficulty - 1);
498
499	if (!trap->other_arch && !trap->inv)
500	{
501	/* set the damage of the trap.
502	* we get 0-4 pts of damage per level of difficulty of the map in
503	* the trap
504	*/
505
506	trap->stats.dam = 0;
507	for (i = 0; i < difficulty; i++)
508	trap->stats.dam += rndm (0, 4);
509
510	/* the poison trap special case */
511	if (trap->attacktype & AT_POISON)
512	{
513	trap->stats.dam = rndm (0, difficulty - 1);
514	if (trap->stats.dam < 1)
515	trap->stats.dam = 1;
516	}
517
518	/* so we get an appropriate amnt of exp for AT_DEATH traps */
519	if (trap->attacktype & AT_DEATH)
520	trap->stats.dam = 127;
521	}
522
523	}