server/server/rune.c

/*
 * static char *rcsid_rune_c =
 *   "$Id$";
 */

/*
    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=add_string(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 Aug 13 17:16:04 2006 UTC (17 years, 9 months ago) by elmex
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.3:	+0 -0 lines
State:	*FILE REMOVED*
Log Message:	Made server compile with C++. Removed cfanim plugin and crossedit. C++ here we come.
#	User	Rev	Content
1	root	1.1	/*
2			* static char *rcsid_rune_c =
3	root	1.2	* "$Id$";
4	root	1.1	*/
5
6			/*
7			CrossFire, A Multiplayer game for X-windows
8
9			Copyright (C) 2003 Mark Wedel & Crossfire Development Team
10			Copyright (C) 1992 Frank Tore Johansen
11
12			This program is free software; you can redistribute it and/or modify
13			it under the terms of the GNU General Public License as published by
14			the Free Software Foundation; either version 2 of the License, or
15			(at your option) any later version.
16
17			This program is distributed in the hope that it will be useful,
18			but WITHOUT ANY WARRANTY; without even the implied warranty of
19			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20			GNU General Public License for more details.
21
22			You should have received a copy of the GNU General Public License
23			along with this program; if not, write to the Free Software
24			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25
26			The authors can be reached via e-mail at crossfire-devel@real-time.com
27			*/
28
29			#include <global.h>
30			#ifndef __CEXTRACT__
31			#include <sproto.h>
32			#endif
33			#include <spells.h>
34
35
36			#ifndef sqr
37			#define sqr(x) ((x)*(x))
38			#endif
39
40
41			/* peterm:
42			* write_rune:
43			* op: rune writer
44			* skop: skill object used for casting this rune
45			* dir: orientation of rune, direction rune's contained spell will
46			* be cast in, if applicable
47			* inspell: spell object to put into the rune, can be null if doing
48			* a marking rune.
49			* level: level of casting of the rune
50			* runename: name of the rune or message displayed by the rune for
51			* a rune of marking
52			*/
53
54			int write_rune(object op,object caster, object spell, int dir, const char runename) {
55			object tmp, rune_spell, *rune;
56			char buf[MAX_BUF];
57			mapstruct *m;
58			sint16 nx,ny;
59
60			if(!dir) {
61			dir=1;
62			}
63
64			nx=op->x+freearr_x[dir];
65			ny=op->y+freearr_y[dir];
66			m = op->map;
67
68			if (get_map_flags(m, &m, nx, ny, &nx, &ny)) {
69			new_draw_info(NDI_UNIQUE, 0,op,"Can't make a rune there!");
70			return 0;
71			}
72			for(tmp=get_map_ob(m,nx,ny);tmp!=NULL;tmp=tmp->above)
73			if(tmp->type==RUNE) break;
74
75			if(tmp){
76			new_draw_info(NDI_UNIQUE, 0,op,"You can't write a rune there.");
77			return 0;
78			}
79
80			if (spell->other_arch) {
81			rune_spell = arch_to_object(spell->other_arch);
82			} else {
83			/* Player specified spell. The player has to know the spell, so
84			* lets just look through the players inventory see if they know it
85			* use the item_matched_string for our typical matching method.
86			*/
87			int bestmatch = 0, ms;
88
89			if (!runename \|\| *runename == 0) {
90			new_draw_info(NDI_UNIQUE, 0, op, "Write a rune of what?");
91			return 0;
92			}
93
94			rune_spell=NULL;
95			for (tmp=op->inv; tmp; tmp=tmp->below) {
96			if (tmp->type == SPELL) {
97			ms = item_matched_string(op, tmp, runename);
98			if (ms > bestmatch) {
99			bestmatch = ms;
100			rune_spell = tmp;
101			}
102			}
103			}
104			if (!rune_spell) {
105			new_draw_info_format(NDI_UNIQUE, 0, op, "You don't know any spell named %s",
106			runename);
107			return 0;
108			}
109			if (rune_spell->skill != spell->skill) {
110			new_draw_info_format(NDI_UNIQUE, 0, op, "You can't cast %s with %s",
111			rune_spell->name, spell->name);
112			return 0;
113			}
114			if (caster->path_denied & spell->path_attuned) {
115			new_draw_info_format(NDI_UNIQUE, 0,op, "%s belongs to a spell path denied to you.",
116			rune_spell->name);
117			return 0;
118			}
119			if (caster_level(caster, rune_spell) < rune_spell->level) {
120			new_draw_info_format(NDI_UNIQUE, 0,op, "%s is beyond your ability to cast!",
121			rune_spell->name);
122			return 0;
123			}
124			if (SP_level_spellpoint_cost(caster, rune_spell, SPELL_MANA) > op->stats.sp) {
125			new_draw_info(NDI_UNIQUE, 0,op,"You don't have enough mana.");
126			return 0;
127			}
128			if (SP_level_spellpoint_cost(caster, rune_spell, SPELL_GRACE) > op->stats.grace) {
129			new_draw_info(NDI_UNIQUE, 0,op,"You don't have enough grace.");
130			return 0;
131			}
132			op->stats.grace -= SP_level_spellpoint_cost(caster, rune_spell, SPELL_GRACE);
133			op->stats.sp -= SP_level_spellpoint_cost(caster, rune_spell, SPELL_MANA);
134			}
135			/* already proper rune. Note this should only be the case if other_arch was set */
136			if (rune_spell->type == RUNE) {
137			rune = rune_spell;
138			} else {
139			rune = get_archetype(GENERIC_RUNE);
140			sprintf(buf,"You set off a rune of %s\n",rune_spell->name);
141			rune->msg=add_string(buf);
142			tmp = get_object();
143			copy_object(rune_spell, tmp);
144			insert_ob_in_ob(tmp, rune);
145			if (spell->face != blank_face)
146			rune->face = spell->face;
147			}
148			rune->level = caster_level(caster, spell);
149			rune->stats.Cha = rune->level/2; /* the invisibility parameter */
150			rune->x=nx;
151			rune->y=ny;
152			rune->map = m;
153			rune->direction=dir; /* where any spell will go upon detonation */
154			set_owner(rune,op); /* runes without need no owner */
155			set_spell_skill(op, caster, spell, rune);
156			insert_ob_in_map(rune,m,op,0);
157			return 1;
158
159			}
160
161
162
163			/* move_rune: peterm
164			comments on runes:
165			rune->level : level at which rune will cast its spell.
166			rune->hp : number of detonations before rune goes away
167			rune->msg : message the rune displays when it goes off
168			rune->direction : direction it will cast a spell in
169			rune->dam : damage the rune will do if it doesn't cast spells
170			rune->attacktype: type of damage it does, if not casting spells
171			rune->other_arch: spell in the rune
172			rune->Cha : how hidden the rune is
173			rune->maxhp : number of spells the rune casts
174			*/
175
176			void move_rune(object *op) {
177			int det=0;
178			if(!op->level) {return;} /* runes of level zero cannot detonate. */
179			det=op->invisible;
180			if(!(rndm(0, MAX(1,(op->stats.Cha))-1))) {
181			op->invisible=0;
182			op->speed_left-=1;
183			}
184			else
185			op->invisible=1;
186			if(op->invisible!=det)
187			update_object(op,UP_OBJ_FACE);
188			}
189
190
191			/* peterm: rune_attack
192			* function handles those runes which detonate but do not cast spells.
193			*/
194
195
196			void rune_attack(object op,object victim)
197			{
198			if(victim) {
199			tag_t tag = victim->count;
200			hit_player(victim,op->stats.dam,op,op->attacktype,1);
201			if (was_destroyed (victim, tag))
202			return;
203			/* if there's a disease in the needle, put it in the player */
204			if(HAS_RANDOM_ITEMS(op)) create_treasure(op->randomitems,op,0,
205			(victim->map?victim->map->difficulty:1),0);
206			if(op->inv && op->inv->type == DISEASE) {
207			object *disease=op->inv;
208			infect_object(victim, disease, 1);
209			remove_ob(disease);
210			free_object(disease);
211			}
212			}
213			else hit_map(op,0,op->attacktype,1);
214			}
215
216			/* This function generalizes attacks by runes/traps. This ought to make
217			* it possible for runes to attack from the inventory,
218			* it'll spring the trap on the victim.
219			*/
220			void spring_trap(object trap,object victim)
221			{
222			object *env;
223			tag_t trap_tag = trap->count;
224			rv_vector rv;
225			int i;
226
227			/* Prevent recursion */
228			if (trap->stats.hp <= 0)
229			return;
230
231			if (QUERY_FLAG(trap,FLAG_IS_LINKED))
232			use_trigger(trap);
233
234			/* Only living objects can trigger runes that don't cast spells, as
235			* doing direct damage to a non-living object doesn't work anyway.
236			* Typical example is an arrow attacking a door.
237			*/
238			if ( ! QUERY_FLAG (victim, FLAG_ALIVE) && !trap->inv && !trap->other_arch)
239			return;
240
241			trap->stats.hp--; /decrement detcount /
242
243			if(victim && victim->type==PLAYER)
244			new_draw_info(NDI_UNIQUE, 0,victim,trap->msg);
245
246			/* Flash an image of the trap on the map so the poor sod
247			* knows what hit him.
248			*/
249			env = object_get_env_recursive(trap);
250
251			/* If the victim is not next to this trap, don't set it off.
252			* players shouldn't get hit by firing arrows at a door for example.
253			* At the same time, the trap will stick around until detonated
254			*/
255			get_rangevector(env, victim, &rv, 0);
256			if (rv.distance > 1) return;
257
258			trap_show(trap,env);
259
260			/* Only if it is a spell do we proceed here */
261			if ((trap->inv && trap->inv->type == SPELL) \|\|
262			(trap->other_arch && trap->other_arch->clone.type == SPELL)) {
263	root	1.2
264	root	1.1	if (was_destroyed (trap, trap_tag))
265			return;
266
267	root	1.3	// breaks summon golem spells, which, for inexplicable reasons,
268			// do not work like summon golem spells at all but still require
269			// direction "0" to work at all.
270			//if (trap->direction)
271			// rv.direction = trap->direction;
272	root	1.2
273	root	1.1	for(i = 0; i < MAX(1, trap->stats.maxhp); i++) {
274			if (trap->inv)
275	root	1.3	cast_spell(env,trap,trap->direction,trap->inv,NULL);
276	root	1.1	else {
277	root	1.2	object *spell = arch_to_object(trap->other_arch);
278	root	1.3	cast_spell(env,trap,trap->direction,spell,NULL);
279	root	1.1	free_object(spell);
280			}
281			}
282			} else {
283			rune_attack(trap,victim);
284			if (was_destroyed (trap, trap_tag))
285			return;
286			}
287
288			if (trap->stats.hp <= 0) {
289			trap->type=SIGN; /* make the trap impotent */
290			trap->stats.food=20; /* make it stick around until its spells are gone */
291			SET_FLAG(trap,FLAG_IS_USED_UP);
292			}
293			}
294
295			/* dispel_rune: by peterm
296			* dispels the target rune, depending on the level of the actor
297			* and the level of the rune risk flag, if true, means that there is
298			* a chance that the trap/rune will detonate
299			*/
300			int dispel_rune(object op,object caster, object spell, object skill, int dir)
301			{
302			object tmp,tmp2;
303			int searchflag = 1, mflags;
304			sint16 x,y;
305			mapstruct *m;
306
307			x = op->x+freearr_x[dir];
308			y = op->y+freearr_y[dir];
309			m = op->map;
310
311			mflags = get_map_flags(m, &m, x, y, &x, &y);
312
313			/* Should we perhaps not allow player to disable traps if a monster/
314			* player is standing on top?
315			*/
316			if (mflags & P_OUT_OF_MAP) {
317			new_draw_info(NDI_UNIQUE, 0,op,"There's nothing there!");
318			return 0;
319			}
320
321			for(tmp=get_map_ob(m,x, y); tmp!=NULL; tmp=tmp->above) {
322			if(tmp->type==RUNE \|\| tmp->type==TRAP) break;
323
324			/* we could put a probability chance here, but since nothing happens
325			* if you fail, no point on that. I suppose we could do a level
326			* comparison so low level players can't erase high level players runes.
327			*/
328			if (tmp->type == SIGN && !strcmp(tmp->arch->name,"rune_mark")) {
329			remove_ob(tmp);
330			free_object(tmp);
331			new_draw_info(NDI_UNIQUE, 0,op,"You wipe out the rune of marking!");
332			return 1;
333			}
334
335			/* now search tmp's inventory for traps
336			* This is for chests, where the rune is in the chests inventory.
337			*/
338			for(tmp2=tmp->inv;tmp2!=NULL;tmp2=tmp2->below) {
339			if(tmp2->type==RUNE \|\| tmp2->type==TRAP) {
340			tmp=tmp2;
341			searchflag=0;
342			break;
343			}
344			}
345			if(!searchflag) break;
346			}
347
348			/* no rune there. */
349			if(tmp==NULL) {
350			new_draw_info(NDI_UNIQUE, 0,op,"There's nothing there!");
351			return 0;
352			}
353			trap_disarm(op,tmp,0, skill);
354			return 1;
355
356			}
357
358			int trap_see(object op,object trap) {
359			int chance;
360
361			chance = random_roll(0, 99, op, PREFER_HIGH);;
362
363			/* decide if we see the rune or not */
364			if((trap->stats.Cha==1) \|\| (chance > MIN(95,MAX(5,((int)((float) (op->map->difficulty
365			+ trap->level + trap->stats.Cha-op->level)/10.0 * 50.0)))))) {
366			new_draw_info_format(NDI_UNIQUE, 0,op,"You spot a %s!",trap->name);
367			return 1;
368			}
369			return 0;
370			}
371
372			int trap_show(object trap, object where) {
373			object *tmp2;
374
375			if(where==NULL) return 0;
376			tmp2=get_archetype("runedet");
377			tmp2->face=&new_faces[GET_ANIMATION(trap, 0)];
378			tmp2->x=where->x;tmp2->y=where->y;tmp2->map=where->map;
379			insert_ob_in_map(tmp2,where->map,NULL,0);
380			return 1;
381
382			}
383
384
385			int trap_disarm(object disarmer, object trap, int risk, object *skill) {
386			int trapworth; /* need to compute the experience worth of the trap
387			before we kill it */
388
389			/* this formula awards a more reasonable amount of exp */
390			trapworth = MAX(1,trap->level) * disarmer->map->difficulty *
391			sqr(MAX(trap->stats.dam,trap->inv?trap->inv->level:1)) /
392			skill->level;
393
394			if(!(random_roll(0, (MAX(2, MIN(20,trap->level-skill->level
395			+5 - disarmer->stats.Dex/2))-1), disarmer, PREFER_LOW)))
396			{
397			new_draw_info_format(NDI_UNIQUE, 0,disarmer,
398			"You successfully disarm the %s!",trap->name);
399			destroy_object(trap);
400			/* If it is your own trap, (or any players trap), don't you don't
401			* get exp for it.
402			*/
403			if (trap->owner && trap->owner->type!=PLAYER && risk)
404			return trapworth;
405			else return 1; /* give minimal exp and say success */
406			}
407			else
408			{
409			new_draw_info_format(NDI_UNIQUE, 0,disarmer,
410			"You fail to disarm the %s.",trap->name);
411			if(! (random_roll(0, (MAX(2,skill->level-trap->level
412			+ disarmer->stats.Dex/2-6))-1, disarmer, PREFER_LOW)) &&risk) {
413			new_draw_info(NDI_UNIQUE, 0,disarmer,"In fact, you set it off!");
414			spring_trap(trap,disarmer);
415			}
416			return 0;
417			}
418			}
419
420
421			/* traps need to be adjusted for the difficulty of the map. The
422			* default traps are too strong for wimpy level 1 players, and
423			* unthreatening to anyone of high level
424			*/
425
426			void trap_adjust(object *trap, int difficulty) {
427			int i;
428
429			/* now we set the trap level to match the difficulty of the level
430			* the formula below will give a level from 1 to (2*difficulty) with
431			* a peak probability at difficulty
432			*/
433
434			trap->level = rndm(0, difficulty-1) + rndm(0, difficulty-1);
435			if(trap->level < 1)
436			trap->level = 1;
437
438			/* set the hiddenness of the trap, similar formula to above */
439			trap->stats.Cha = rndm(0, 19) + rndm(0, difficulty-1) + rndm(0, difficulty-1);
440
441			if (!trap->other_arch && !trap->inv) {
442			/* set the damage of the trap.
443			* we get 0-4 pts of damage per level of difficulty of the map in
444			* the trap
445			*/
446
447			trap->stats.dam = 0;
448			for(i=0;i<difficulty;i++)
449			trap->stats.dam+=rndm(0, 4);
450
451			/* the poison trap special case */
452			if(trap->attacktype & AT_POISON) {
453			trap->stats.dam = rndm(0, difficulty-1);
454			if(trap->stats.dam < 1)
455			trap->stats.dam = 1;
456			}
457
458			/* so we get an appropriate amnt of exp for AT_DEATH traps */
459			if(trap->attacktype & AT_DEATH) trap->stats.dam = 127;
460			}
461
462			}
463