server/server/rune.C

/*
 * This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
 * 
 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
 * Copyright (©) 2003,2007 Mark Wedel & Crossfire Development Team
 * Copyright (©) 1992,2007 Frank Tore Johansen
 * 
 * Crossfire TRT 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 Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 * The authors can be reached via e-mail to <crossfire@schmorp.de>
 */

#include <global.h>
#include <sproto.h>
#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) & (P_OUT_OF_MAP | P_SAFE | P_NO_MAGIC | P_NO_CLERIC))
    {
      new_draw_info (NDI_UNIQUE, 0, op, "Can't make a rune there!");
      return 0;
    }

  for (tmp = m->at (nx, ny).bot; tmp; tmp = tmp->above)
    if (tmp->type == RUNE)
      break;

  if (tmp)
    {
      new_draw_info (NDI_UNIQUE, 0, op, "You can't write a rune on top of another rune.");
      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 && !caster->flag [FLAG_WIZCAST])
        {
          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 && !caster->flag [FLAG_WIZCAST])
        {
          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;
      rune->insert (rune_spell->clone ());

      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->direction = dir;        /* where any spell will go upon detonation */
  rune->set_owner (op);         /* runes without need no owner */
  set_spell_skill (op, caster, spell, rune);

  m->insert (rune, nx, ny, op);
  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)
{
  /* runes of level zero cannot detonate. */
  if (!op->level)
    return;

  int 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_CHANGE);
}

/*  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 (op->has_random_items ())
        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);

  if (victim->type == PLAYER) // only count players as enemies
    trap->enemy = victim; // set the victim as the traps enemy, so that summoned
                          // creatures know who to attack.

  /* 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->archname, "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)
{
  if (where == NULL)
    return 0;

  object *tmp = get_archetype ("runedet");
  tmp->face = GET_ANIMATION (trap, 0);
  tmp->insert_at (where, 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:	1.26
Committed:	Mon Jun 4 12:19:09 2007 UTC (16 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.25:	+1 -1 lines
Log Message:	rename arch->name to arch->archname for preparation of subclassing object
#	User	Rev	Content
1	elmex	1.1	/*
2	root	1.25	* This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
3	pippijn	1.17	*
4	root	1.25	* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
5			* Copyright (©) 2003,2007 Mark Wedel & Crossfire Development Team
6			* Copyright (©) 1992,2007 Frank Tore Johansen
7	pippijn	1.17	*
8	root	1.25	* Crossfire TRT is free software; you can redistribute it and/or modify it
9			* under the terms of the GNU General Public License as published by the Free
10			* Software Foundation; either version 2 of the License, or (at your option)
11			* any later version.
12	pippijn	1.17	*
13	root	1.25	* This program is distributed in the hope that it will be useful, but
14			* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15			* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16			* for more details.
17	pippijn	1.17	*
18	root	1.25	* You should have received a copy of the GNU General Public License along
19			* with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
20			* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21			*
22			* The authors can be reached via e-mail to <crossfire@schmorp.de>
23	pippijn	1.17	*/
24	elmex	1.1
25			#include <global.h>
26	root	1.14	#include <sproto.h>
27	elmex	1.1	#include <spells.h>
28
29			#ifndef sqr
30	root	1.4	# define sqr(x) ((x)*(x))
31	elmex	1.1	#endif
32
33			/* peterm:
34			* write_rune:
35			* op: rune writer
36			* skop: skill object used for casting this rune
37			* dir: orientation of rune, direction rune's contained spell will
38			* be cast in, if applicable
39			* inspell: spell object to put into the rune, can be null if doing
40			* a marking rune.
41			* level: level of casting of the rune
42			* runename: name of the rune or message displayed by the rune for
43			* a rune of marking
44			*/
45
46	root	1.4	int
47			write_rune (object op, object caster, object spell, int dir, const char runename)
48			{
49			object tmp, rune_spell, *rune;
50			char buf[MAX_BUF];
51	root	1.7	maptile *m;
52	root	1.4	sint16 nx, ny;
53
54			if (!dir)
55	root	1.10	dir = 1;
56	root	1.4
57			nx = op->x + freearr_x[dir];
58			ny = op->y + freearr_y[dir];
59			m = op->map;
60
61	root	1.20	if (get_map_flags (m, &m, nx, ny, &nx, &ny) & (P_OUT_OF_MAP \| P_SAFE \| P_NO_MAGIC \| P_NO_CLERIC))
62	root	1.4	{
63			new_draw_info (NDI_UNIQUE, 0, op, "Can't make a rune there!");
64			return 0;
65	elmex	1.1	}
66	root	1.10
67	root	1.19	for (tmp = m->at (nx, ny).bot; tmp; tmp = tmp->above)
68	root	1.4	if (tmp->type == RUNE)
69			break;
70
71			if (tmp)
72			{
73	root	1.20	new_draw_info (NDI_UNIQUE, 0, op, "You can't write a rune on top of another rune.");
74	elmex	1.1	return 0;
75			}
76
77	root	1.4	if (spell->other_arch)
78	root	1.10	rune_spell = arch_to_object (spell->other_arch);
79	root	1.4	else
80			{
81			/* Player specified spell. The player has to know the spell, so
82			* lets just look through the players inventory see if they know it
83			* use the item_matched_string for our typical matching method.
84			*/
85			int bestmatch = 0, ms;
86
87			if (!runename \|\| *runename == 0)
88			{
89			new_draw_info (NDI_UNIQUE, 0, op, "Write a rune of what?");
90			return 0;
91			}
92
93			rune_spell = NULL;
94			for (tmp = op->inv; tmp; tmp = tmp->below)
95	root	1.20	if (tmp->type == SPELL)
96			{
97			ms = item_matched_string (op, tmp, runename);
98			if (ms > bestmatch)
99			{
100			bestmatch = ms;
101			rune_spell = tmp;
102			}
103			}
104	root	1.10
105	root	1.4	if (!rune_spell)
106			{
107			new_draw_info_format (NDI_UNIQUE, 0, op, "You don't know any spell named %s", runename);
108			return 0;
109			}
110	root	1.10
111	root	1.4	if (rune_spell->skill != spell->skill)
112			{
113			new_draw_info_format (NDI_UNIQUE, 0, op, "You can't cast %s with %s", &rune_spell->name, &spell->name);
114			return 0;
115			}
116	root	1.10
117	root	1.20	if (caster->path_denied & spell->path_attuned && !caster->flag [FLAG_WIZCAST])
118	root	1.4	{
119			new_draw_info_format (NDI_UNIQUE, 0, op, "%s belongs to a spell path denied to you.", &rune_spell->name);
120			return 0;
121			}
122	root	1.10
123	root	1.20	if (caster_level (caster, rune_spell) < rune_spell->level && !caster->flag [FLAG_WIZCAST])
124	root	1.4	{
125			new_draw_info_format (NDI_UNIQUE, 0, op, "%s is beyond your ability to cast!", &rune_spell->name);
126			return 0;
127			}
128	root	1.10
129	root	1.4	if (SP_level_spellpoint_cost (caster, rune_spell, SPELL_MANA) > op->stats.sp)
130			{
131			new_draw_info (NDI_UNIQUE, 0, op, "You don't have enough mana.");
132			return 0;
133			}
134	root	1.10
135	root	1.4	if (SP_level_spellpoint_cost (caster, rune_spell, SPELL_GRACE) > op->stats.grace)
136			{
137			new_draw_info (NDI_UNIQUE, 0, op, "You don't have enough grace.");
138			return 0;
139			}
140	root	1.10
141	root	1.4	op->stats.grace -= SP_level_spellpoint_cost (caster, rune_spell, SPELL_GRACE);
142			op->stats.sp -= SP_level_spellpoint_cost (caster, rune_spell, SPELL_MANA);
143			}
144	root	1.10
145	root	1.4	/* already proper rune. Note this should only be the case if other_arch was set */
146			if (rune_spell->type == RUNE)
147	root	1.15	rune = rune_spell;
148	root	1.4	else
149			{
150			rune = get_archetype (GENERIC_RUNE);
151			sprintf (buf, "You set off a rune of %s\n", &rune_spell->name);
152			rune->msg = buf;
153	root	1.15	rune->insert (rune_spell->clone ());
154	root	1.10
155	root	1.4	if (spell->face != blank_face)
156			rune->face = spell->face;
157			}
158	root	1.10
159	root	1.4	rune->level = caster_level (caster, spell);
160			rune->stats.Cha = rune->level / 2; /* the invisibility parameter */
161			rune->direction = dir; /* where any spell will go upon detonation */
162	root	1.11	rune->set_owner (op); /* runes without need no owner */
163	root	1.4	set_spell_skill (op, caster, spell, rune);
164	root	1.15
165			m->insert (rune, nx, ny, op);
166	root	1.4	return 1;
167	elmex	1.1	}
168
169			/* move_rune: peterm
170			comments on runes:
171			rune->level : level at which rune will cast its spell.
172			rune->hp : number of detonations before rune goes away
173			rune->msg : message the rune displays when it goes off
174			rune->direction : direction it will cast a spell in
175			rune->dam : damage the rune will do if it doesn't cast spells
176			rune->attacktype: type of damage it does, if not casting spells
177			rune->other_arch: spell in the rune
178			rune->Cha : how hidden the rune is
179			rune->maxhp : number of spells the rune casts
180			*/
181	root	1.4	void
182			move_rune (object *op)
183			{
184	root	1.18	/* runes of level zero cannot detonate. */
185			if (!op->level)
186			return;
187
188			int det = op->invisible;
189	root	1.4
190			if (!(rndm (0, MAX (1, (op->stats.Cha)) - 1)))
191			{
192			op->invisible = 0;
193			op->speed_left -= 1;
194			}
195			else
196			op->invisible = 1;
197	root	1.18
198	root	1.4	if (op->invisible != det)
199	root	1.22	update_object (op, UP_OBJ_CHANGE);
200	elmex	1.1	}
201
202			/* peterm: rune_attack
203			* function handles those runes which detonate but do not cast spells.
204			*/
205	root	1.4	void
206			rune_attack (object op, object victim)
207	elmex	1.1	{
208	root	1.4	if (victim)
209			{
210	root	1.6	hit_player (victim, op->stats.dam, op, op->attacktype, 1);
211	root	1.4
212	root	1.6	if (victim->destroyed ())
213	root	1.4	return;
214	root	1.6
215	root	1.4	/* if there's a disease in the needle, put it in the player */
216	root	1.12	if (op->has_random_items ())
217	root	1.4	create_treasure (op->randomitems, op, 0, (victim->map ? victim->map->difficulty : 1), 0);
218	root	1.6
219	root	1.4	if (op->inv && op->inv->type == DISEASE)
220			{
221			object *disease = op->inv;
222
223			infect_object (victim, disease, 1);
224	root	1.9	disease->destroy ();
225	root	1.4	}
226	elmex	1.1	}
227	root	1.4	else
228			hit_map (op, 0, op->attacktype, 1);
229	elmex	1.1	}
230
231			/* This function generalizes attacks by runes/traps. This ought to make
232			* it possible for runes to attack from the inventory,
233			* it'll spring the trap on the victim.
234			*/
235	root	1.4	void
236			spring_trap (object trap, object victim)
237	elmex	1.1	{
238	root	1.4	object *env;
239			rv_vector rv;
240			int i;
241
242			/* Prevent recursion */
243			if (trap->stats.hp <= 0)
244			return;
245
246			if (QUERY_FLAG (trap, FLAG_IS_LINKED))
247			use_trigger (trap);
248
249			/* Only living objects can trigger runes that don't cast spells, as
250			* doing direct damage to a non-living object doesn't work anyway.
251			* Typical example is an arrow attacking a door.
252			*/
253			if (!QUERY_FLAG (victim, FLAG_ALIVE) && !trap->inv && !trap->other_arch)
254			return;
255
256			trap->stats.hp--; /decrement detcount /
257
258			if (victim && victim->type == PLAYER)
259			new_draw_info (NDI_UNIQUE, 0, victim, trap->msg);
260
261			/* Flash an image of the trap on the map so the poor sod
262			* knows what hit him.
263			*/
264			env = object_get_env_recursive (trap);
265
266			/* If the victim is not next to this trap, don't set it off.
267			* players shouldn't get hit by firing arrows at a door for example.
268			* At the same time, the trap will stick around until detonated
269			*/
270			get_rangevector (env, victim, &rv, 0);
271			if (rv.distance > 1)
272			return;
273
274			trap_show (trap, env);
275
276	elmex	1.23	if (victim->type == PLAYER) // only count players as enemies
277			trap->enemy = victim; // set the victim as the traps enemy, so that summoned
278			// creatures know who to attack.
279
280	root	1.4	/* Only if it is a spell do we proceed here */
281			if ((trap->inv && trap->inv->type == SPELL) \|\| (trap->other_arch && trap->other_arch->clone.type == SPELL))
282			{
283	elmex	1.1
284	root	1.6	if (trap->destroyed ())
285	root	1.2	return;
286	elmex	1.1
287	root	1.4	// breaks summon golem spells, which, for inexplicable reasons,
288			// do not work like summon golem spells at all but still require
289			// direction "0" to work at all.
290			//if (trap->direction)
291			// rv.direction = trap->direction;
292	elmex	1.1
293	root	1.4	for (i = 0; i < MAX (1, trap->stats.maxhp); i++)
294			{
295			if (trap->inv)
296			cast_spell (env, trap, trap->direction, trap->inv, NULL);
297			else
298			{
299			object *spell = arch_to_object (trap->other_arch);
300	elmex	1.1
301	root	1.4	cast_spell (env, trap, trap->direction, spell, NULL);
302	root	1.9	spell->destroy ();
303	root	1.2	}
304			}
305	root	1.4	}
306			else
307			{
308			rune_attack (trap, victim);
309	root	1.6	if (trap->destroyed ())
310	root	1.4	return;
311	elmex	1.1	}
312
313	root	1.4	if (trap->stats.hp <= 0)
314			{
315			trap->type = SIGN; /* make the trap impotent */
316			trap->stats.food = 20; /* make it stick around until its spells are gone */
317			SET_FLAG (trap, FLAG_IS_USED_UP);
318	elmex	1.1	}
319			}
320
321			/* dispel_rune: by peterm
322			* dispels the target rune, depending on the level of the actor
323			* and the level of the rune risk flag, if true, means that there is
324			* a chance that the trap/rune will detonate
325			*/
326	root	1.4	int
327			dispel_rune (object op, object caster, object spell, object skill, int dir)
328	elmex	1.1	{
329	root	1.4	object tmp, tmp2;
330			int searchflag = 1, mflags;
331			sint16 x, y;
332	root	1.7	maptile *m;
333	root	1.4
334			x = op->x + freearr_x[dir];
335			y = op->y + freearr_y[dir];
336			m = op->map;
337
338			mflags = get_map_flags (m, &m, x, y, &x, &y);
339
340			/* Should we perhaps not allow player to disable traps if a monster/
341			* player is standing on top?
342			*/
343			if (mflags & P_OUT_OF_MAP)
344			{
345			new_draw_info (NDI_UNIQUE, 0, op, "There's nothing there!");
346			return 0;
347			}
348
349	root	1.13	for (tmp = GET_MAP_OB (m, x, y); tmp != NULL; tmp = tmp->above)
350	root	1.4	{
351			if (tmp->type == RUNE \|\| tmp->type == TRAP)
352			break;
353
354			/* we could put a probability chance here, but since nothing happens
355			* if you fail, no point on that. I suppose we could do a level
356			* comparison so low level players can't erase high level players runes.
357			*/
358	root	1.26	if (tmp->type == SIGN && !strcmp (tmp->arch->archname, "rune_mark"))
359	root	1.4	{
360	root	1.9	tmp->destroy ();
361	root	1.4	new_draw_info (NDI_UNIQUE, 0, op, "You wipe out the rune of marking!");
362			return 1;
363			}
364
365			/* now search tmp's inventory for traps
366			* This is for chests, where the rune is in the chests inventory.
367			*/
368			for (tmp2 = tmp->inv; tmp2 != NULL; tmp2 = tmp2->below)
369			{
370			if (tmp2->type == RUNE \|\| tmp2->type == TRAP)
371			{
372			tmp = tmp2;
373			searchflag = 0;
374			break;
375	root	1.2	}
376			}
377	root	1.4	if (!searchflag)
378			break;
379	elmex	1.1	}
380	root	1.4
381			/* no rune there. */
382			if (tmp == NULL)
383			{
384			new_draw_info (NDI_UNIQUE, 0, op, "There's nothing there!");
385			return 0;
386			}
387			trap_disarm (op, tmp, 0, skill);
388			return 1;
389
390	elmex	1.1	}
391
392	root	1.4	int
393			trap_see (object op, object trap)
394			{
395			int chance;
396
397			chance = random_roll (0, 99, op, PREFER_HIGH);;
398	elmex	1.1
399	root	1.4	/* decide if we see the rune or not */
400			if ((trap->stats.Cha == 1) \|\| (chance > MIN (95, MAX (5, ((int) ((float) (op->map->difficulty
401			+ trap->level + trap->stats.Cha - op->level) / 10.0 * 50.0))))))
402			{
403			new_draw_info_format (NDI_UNIQUE, 0, op, "You spot a %s!", &trap->name);
404			return 1;
405	elmex	1.1	}
406	root	1.4	return 0;
407	elmex	1.1	}
408
409	root	1.4	int
410			trap_show (object trap, object where)
411			{
412			if (where == NULL)
413			return 0;
414	root	1.15
415			object *tmp = get_archetype ("runedet");
416	root	1.21	tmp->face = GET_ANIMATION (trap, 0);
417	root	1.15	tmp->insert_at (where, 0);
418
419	root	1.4	return 1;
420	elmex	1.1	}
421
422	root	1.4	int
423			trap_disarm (object disarmer, object trap, int risk, object *skill)
424			{
425			int trapworth; /* need to compute the experience worth of the trap
426			before we kill it */
427
428			/* this formula awards a more reasonable amount of exp */
429			trapworth = MAX (1, trap->level) * disarmer->map->difficulty *
430			sqr (MAX (trap->stats.dam, trap->inv ? trap->inv->level : 1)) / skill->level;
431
432			if (!(random_roll (0, (MAX (2, MIN (20, trap->level - skill->level + 5 - disarmer->stats.Dex / 2)) - 1), disarmer, PREFER_LOW)))
433			{
434			new_draw_info_format (NDI_UNIQUE, 0, disarmer, "You successfully disarm the %s!", &trap->name);
435	root	1.9	trap->destroy (1);
436
437	root	1.4	/* If it is your own trap, (or any players trap), don't you don't
438			* get exp for it.
439			*/
440			if (trap->owner && trap->owner->type != PLAYER && risk)
441			return trapworth;
442			else
443			return 1; /* give minimal exp and say success */
444			}
445			else
446			{
447			new_draw_info_format (NDI_UNIQUE, 0, disarmer, "You fail to disarm the %s.", &trap->name);
448			if (!(random_roll (0, (MAX (2, skill->level - trap->level + disarmer->stats.Dex / 2 - 6)) - 1, disarmer, PREFER_LOW)) && risk)
449			{
450			new_draw_info (NDI_UNIQUE, 0, disarmer, "In fact, you set it off!");
451			spring_trap (trap, disarmer);
452	elmex	1.1	}
453	root	1.4	return 0;
454			}
455	elmex	1.1	}
456
457
458			/* traps need to be adjusted for the difficulty of the map. The
459			* default traps are too strong for wimpy level 1 players, and
460			* unthreatening to anyone of high level
461			*/
462
463	root	1.4	void
464			trap_adjust (object *trap, int difficulty)
465			{
466			int i;
467	elmex	1.1
468	root	1.4	/* now we set the trap level to match the difficulty of the level
469			* the formula below will give a level from 1 to (2*difficulty) with
470			* a peak probability at difficulty
471			*/
472
473			trap->level = rndm (0, difficulty - 1) + rndm (0, difficulty - 1);
474			if (trap->level < 1)
475			trap->level = 1;
476
477			/* set the hiddenness of the trap, similar formula to above */
478			trap->stats.Cha = rndm (0, 19) + rndm (0, difficulty - 1) + rndm (0, difficulty - 1);
479
480			if (!trap->other_arch && !trap->inv)
481			{
482			/* set the damage of the trap.
483			* we get 0-4 pts of damage per level of difficulty of the map in
484			* the trap
485			*/
486
487			trap->stats.dam = 0;
488			for (i = 0; i < difficulty; i++)
489			trap->stats.dam += rndm (0, 4);
490
491			/* the poison trap special case */
492			if (trap->attacktype & AT_POISON)
493			{
494			trap->stats.dam = rndm (0, difficulty - 1);
495			if (trap->stats.dam < 1)
496			trap->stats.dam = 1;
497	root	1.2	}
498	elmex	1.1
499	root	1.4	/* so we get an appropriate amnt of exp for AT_DEATH traps */
500			if (trap->attacktype & AT_DEATH)
501			trap->stats.dam = 127;
502	elmex	1.1	}
503
504			}