Source:NetHack 3.3.0/trap.c

From NetHackWiki
Revision as of 11:59, 4 March 2008 by Kernigh bot (talk | contribs) (NetHack 3.3.0/trap.c moved to Source:NetHack 3.3.0/trap.c: Robot: moved page)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Below is the full text to trap.c from the source code of NetHack 3.3.0. To link to a particular line, write [[NetHack 3.3.0/trap.c#line123]], for example.

Warning! This is the source code from an old release. For the latest release, see Source code

The NetHack General Public License applies to screenshots, source code and other content from NetHack.

This content was modified from the original NetHack source code distribution (by splitting up NetHack content between wiki pages, and possibly further editing). See the page history for a list of who changed it, and on what dates.

1.    /*	SCCS Id: @(#)trap.c	3.3	1999/12/05	*/
2.    /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
3.    /* NetHack may be freely redistributed.  See license for details. */
4.    
5.    #include "hack.h"
6.    
7.    STATIC_DCL void FDECL(dofiretrap, (struct obj *));
8.    STATIC_DCL void NDECL(domagictrap);
9.    STATIC_DCL boolean FDECL(emergency_disrobe,(boolean *));
10.   STATIC_DCL int FDECL(untrap_prob, (struct trap *ttmp));
11.   STATIC_DCL void FDECL(cnv_trap_obj, (int, int, struct trap *));
12.   STATIC_DCL void FDECL(move_into_trap, (struct trap *));
13.   STATIC_DCL int FDECL(try_disarm, (struct trap *,BOOLEAN_P));
14.   STATIC_DCL void FDECL(reward_untrap, (struct trap *, struct monst *));
15.   STATIC_DCL int FDECL(disarm_beartrap, (struct trap *));
16.   STATIC_DCL int FDECL(disarm_landmine, (struct trap *));
17.   STATIC_DCL int FDECL(disarm_squeaky_board, (struct trap *));
18.   STATIC_DCL int FDECL(disarm_shooting_trap, (struct trap *, int));
19.   STATIC_DCL int FDECL(try_lift, (struct monst *, struct trap *, int, BOOLEAN_P));
20.   STATIC_DCL int FDECL(help_monster_out, (struct monst *, struct trap *));
21.   STATIC_DCL boolean FDECL(thitm, (int, struct monst *, struct obj *, int));
22.   STATIC_DCL int FDECL(mkroll_launch,
23.   			(struct trap *,XCHAR_P,XCHAR_P,SHORT_P,long));
24.   STATIC_DCL boolean FDECL(isclearpath,(coord *, int, SCHAR_P, SCHAR_P));
25.   STATIC_DCL void FDECL(blow_up_landmine, (struct trap *));
26.   
27.   #ifndef OVLB
28.   STATIC_VAR const char *a_your[2];
29.   STATIC_VAR const char *A_Your[2];
30.   STATIC_VAR const char *the_your[2];
31.   STATIC_VAR const char tower_of_flame[];
32.   STATIC_VAR const char *A_gush_of_water_hits;
33.   
34.   #else
35.   
36.   STATIC_VAR const char *a_your[2] = { "a", "your" };
37.   STATIC_VAR const char *A_Your[2] = { "A", "Your" };
38.   STATIC_VAR const char *the_your[2] = { "the", "your" };
39.   STATIC_VAR const char tower_of_flame[] = "tower of flame";
40.   STATIC_VAR const char *A_gush_of_water_hits = "A gush of water hits";
41.   
42.   #endif /* OVLB */
43.   
44.   #ifdef OVLB
45.   
46.   /* called when you're hit by fire (dofiretrap,buzz,zapyourself,explode) */
47.   boolean			/* returns TRUE if hit on torso */
48.   burnarmor(victim)
49.   struct monst *victim;
50.   {
51.       struct obj *item;
52.   
53.       if (!victim) return 0;
54.   #define burn_dmg(obj,descr) rust_dmg(obj, descr, 0, FALSE, victim)
55.       while (1) {
56.   	switch (rn2(5)) {
57.   	case 0:
58.   	    item = (victim == &youmonst) ? uarmh : which_armor(victim, W_ARMH);
59.   	    if (!burn_dmg(item, "leather helmet")) continue;
60.   	    break;
61.   	case 1:
62.   	    item = (victim == &youmonst) ? uarmc : which_armor(victim, W_ARMC);
63.   	    if (item) {
64.   		(void) burn_dmg(item, "cloak");
65.   		return TRUE;
66.   	    }
67.   	    item = (victim == &youmonst) ? uarm : which_armor(victim, W_ARM);
68.   	    if (item) {
69.   		(void) burn_dmg(item, xname(item));
70.   		return TRUE;
71.   	    }
72.   #ifdef TOURIST
73.   	    item = (victim == &youmonst) ? uarmu : which_armor(victim, W_ARMU);
74.   	    if (item)
75.   		(void) burn_dmg(item, "shirt");
76.   #endif
77.   	    return TRUE;
78.   	case 2:
79.   	    item = (victim == &youmonst) ? uarms : which_armor(victim, W_ARMS);
80.   	    if (!burn_dmg(item, "wooden shield")) continue;
81.   	    break;
82.   	case 3:
83.   	    item = (victim == &youmonst) ? uarmg : which_armor(victim, W_ARMG);
84.   	    if (!burn_dmg(item, "gloves")) continue;
85.   	    break;
86.   	case 4:
87.   	    item = (victim == &youmonst) ? uarmf : which_armor(victim, W_ARMF);
88.   	    if (!burn_dmg(item, "boots")) continue;
89.   	    break;
90.   	}
91.   	break; /* Out of while loop */
92.       }
93.       return FALSE;
94.   #undef burn_dmg
95.   }
96.   
97.   /* Generic rust-armor function.  Returns TRUE if a message was printed;
98.    * "print", if set, means to print a message (and thus to return TRUE) even
99.    * if the item could not be rusted; otherwise a message is printed and TRUE is
100.   * returned only for rustable items.
101.   */
102.  boolean
103.  rust_dmg(otmp, ostr, type, print, victim)
104.  register struct obj *otmp;
105.  register const char *ostr;
106.  int type;
107.  boolean print;
108.  struct monst *victim;
109.  {
110.  	static NEARDATA const char *action[] = { "smoulder", "rust", "rot", "corrode" };
111.  	static NEARDATA const char *msg[] =  { "burnt", "rusted", "rotten", "corroded" };
112.  	boolean vulnerable = FALSE;
113.  	boolean plural;
114.  	boolean grprot = FALSE;
115.  	boolean is_primary = TRUE;
116.  	boolean vismon = (victim != &youmonst) && canseemon(victim);
117.  	int erosion;
118.  
119.  	if (!otmp) return(FALSE);
120.  	switch(type) {
121.  		case 0: vulnerable = is_flammable(otmp);
122.  			break;
123.  		case 1: vulnerable = is_rustprone(otmp);
124.  			grprot = TRUE;
125.  			break;
126.  		case 2: vulnerable = is_rottable(otmp);
127.  			is_primary = FALSE;
128.  			break;
129.  		case 3: vulnerable = is_corrodeable(otmp);
130.  			grprot = TRUE;
131.  			is_primary = FALSE;
132.  			break;
133.  	}
134.  	erosion = is_primary ? otmp->oeroded : otmp->oeroded2;
135.  
136.  	if (!print && (!vulnerable || otmp->oerodeproof || erosion == MAX_ERODE))
137.  		return FALSE;
138.  
139.  	plural = is_gloves(otmp) || is_boots(otmp);
140.  
141.  	if (!vulnerable) {
142.  	    if (flags.verbose) {
143.  		if (victim == &youmonst)
144.  		    Your("%s %s not affected.", ostr, plural ? "are" : "is");
145.  		else if (vismon)
146.  		    pline("%s's %s %s not affected.", Monnam(victim), ostr,
147.  			plural ? "are" : "is");
148.  	    }
149.  	} else if (erosion < MAX_ERODE) {
150.  	    if (grprot && otmp->greased) {
151.  		grease_protect(otmp,ostr,plural,victim);
152.  	    } else if (otmp->oerodeproof || (otmp->blessed && !rnl(4))) {
153.  		if (flags.verbose) {
154.  		    if (victim == &youmonst)
155.  			pline("Somehow, your %s %s not affected.",
156.  				ostr, plural ? "are" : "is");
157.  		    else if (vismon)
158.  			pline("Somehow, %s's %s %s not affected.",
159.  				mon_nam(victim), ostr, plural ? "are" : "is");
160.  		}
161.  	    } else {
162.  		if (victim == &youmonst)
163.  		    Your("%s %s%s%s!", ostr, action[type],
164.  			plural ? "" : "s",
165.  			erosion+1 == MAX_ERODE ? " completely" :
166.  			erosion ? " further" : "");
167.  		else if (vismon)
168.  		    pline("%s's %s %s%s%s!", Monnam(victim), ostr, action[type],
169.  			plural ? "" : "s",
170.  			erosion+1 == MAX_ERODE ? " completely" :
171.  			erosion ? " further" : "");
172.  		if (is_primary)
173.  		    otmp->oeroded++;
174.  		else
175.  		    otmp->oeroded2++;
176.  	    }
177.  	} else {
178.  	    if (flags.verbose) {
179.  		if (victim == &youmonst)
180.  		    Your("%s %s%s completely %s.", ostr,
181.  			Blind ? "feel" : "look",
182.  			plural ? "" : "s", msg[type]);
183.  		else if (vismon)
184.  		    pline("%s's %s look%s completely %s.",
185.  			Monnam(victim), ostr,
186.  			plural ? "" : "s", msg[type]);
187.  	    }
188.  	}
189.  	return(TRUE);
190.  }
191.  
192.  void
193.  grease_protect(otmp,ostr,plu,victim)
194.  register struct obj *otmp;
195.  register const char *ostr;
196.  register boolean plu;
197.  struct monst *victim;
198.  {
199.  	static const char txt[] = "protected by the layer of grease!";
200.  	boolean vismon = (victim != &youmonst) && canseemon(victim);
201.  
202.  	if (ostr) {
203.  	    if (victim == &youmonst)
204.  		Your("%s %s %s",ostr,plu ? "are" : "is", txt);
205.  	    else if (vismon)
206.  		pline("%s's %s %s %s", Monnam(victim),
207.  		    ostr, plu ? "are" : "is", txt);
208.  	} else {
209.  	    if (victim == &youmonst)
210.  		Your("%s %s",aobjnam(otmp,"are"), txt);
211.  	    else if (vismon)
212.  		pline("%s's %s %s", Monnam(victim), aobjnam(otmp,"are"), txt);
213.  	}
214.  	if (!rn2(2)) {
215.  	    pline_The("grease dissolves.");
216.  	    otmp->greased = 0;
217.  	}
218.  }
219.  
220.  struct trap *
221.  maketrap(x,y,typ)
222.  register int x, y, typ;
223.  {
224.  	register struct trap *ttmp;
225.  	register struct rm *lev;
226.  	register boolean oldplace;
227.  
228.  	if ((ttmp = t_at(x,y)) != 0) {
229.  	    if (ttmp->ttyp == MAGIC_PORTAL) return (struct trap *)0;
230.  	    oldplace = TRUE;
231.  	    if (u.utrap && (x == u.ux) && (y == u.uy) &&
232.  	      ((u.utraptype == TT_BEARTRAP && typ != BEAR_TRAP) ||
233.  	      (u.utraptype == TT_WEB && typ != WEB) ||
234.  	      (u.utraptype == TT_PIT && typ != PIT && typ != SPIKED_PIT)))
235.  		    u.utrap = 0;
236.  	} else {
237.  	    oldplace = FALSE;
238.  	    ttmp = newtrap();
239.  	    ttmp->tx = x;
240.  	    ttmp->ty = y;
241.  	    ttmp->launch.x = -1;	/* force error if used before set */
242.  	    ttmp->launch.y = -1;
243.  	}
244.  	ttmp->ttyp = typ;
245.  	switch(typ) {
246.  	    case STATUE_TRAP:	    /* create a "living" statue */
247.  	      { struct monst *mtmp;
248.  		struct obj *otmp, *statue;
249.  
250.  		statue = mkcorpstat(STATUE, (struct monst *)0,
251.  					&mons[rndmonnum()], x, y, FALSE);
252.  		mtmp = makemon(&mons[statue->corpsenm], 0, 0, NO_MM_FLAGS);
253.  		if (!mtmp) break; /* should never happen */
254.  		while(mtmp->minvent) {
255.  		    otmp = mtmp->minvent;
256.  		    otmp->owornmask = 0;
257.  		    obj_extract_self(otmp);
258.  		    add_to_container(statue, otmp);
259.  		}
260.  		mongone(mtmp);
261.  		break;
262.  	      }
263.  	    case ROLLING_BOULDER_TRAP:	/* boulder will roll towards trigger */
264.  		(void) mkroll_launch(ttmp, x, y, BOULDER, 1L);
265.  		break;
266.  	    case HOLE:
267.  	    case PIT:
268.  	    case SPIKED_PIT:
269.  	    case TRAPDOOR:
270.  		lev = &levl[x][y];
271.  		if (*in_rooms(x, y, SHOPBASE) &&
272.  			((typ == HOLE || typ == TRAPDOOR) || IS_DOOR(lev->typ)))
273.  		    add_damage(x, y,		/* schedule repair */
274.  			(IS_DOOR(lev->typ) && !flags.mon_moving) ? 200L : 0L);
275.  		lev->doormask = 0;	/* subsumes altarmask, icedpool... */
276.  		if (IS_ROOM(lev->typ)) /* && !IS_AIR(lev->typ) */
277.  		    lev->typ = ROOM;
278.  
279.  		/*
280.  		 * some cases which can happen when digging
281.  		 * down while phazing thru solid areas
282.  		 */
283.  		else if (lev->typ == STONE || lev->typ == SCORR)
284.  		    lev->typ = CORR;
285.  		else if (IS_WALL(lev->typ) || lev->typ == SDOOR)
286.  		    lev->typ = level.flags.is_maze_lev ? ROOM :
287.  			       level.flags.is_cavernous_lev ? CORR : DOOR;
288.  
289.  		unearth_objs(x, y);
290.  		break;
291.  	}
292.  	if (ttmp->ttyp == HOLE) ttmp->tseen = 1;  /* You can't hide a hole */
293.  	else ttmp->tseen = 0;
294.  	ttmp->once = 0;
295.  	ttmp->madeby_u = 0;
296.  	ttmp->dst.dnum = -1;
297.  	ttmp->dst.dlevel = -1;
298.  	if (!oldplace) {
299.  	    ttmp->ntrap = ftrap;
300.  	    ftrap = ttmp;
301.  	}
302.  	return(ttmp);
303.  }
304.  
305.  void
306.  fall_through(td)
307.  boolean td;	/* td == TRUE : trapdoor or hole */
308.  {
309.  	d_level dtmp;
310.  	char msgbuf[BUFSZ];
311.  	const char *dont_fall = 0;
312.  	register int newlevel = dunlev(&u.uz);
313.  
314.  	/* KMH -- You can't escape the Sokoban level traps */
315.  	if(Blind && Levitation && !In_sokoban(&u.uz)) return;
316.  
317.  	do {
318.  	    newlevel++;
319.  	} while(!rn2(4) && newlevel < dunlevs_in_dungeon(&u.uz));
320.  
321.  	if(td) {
322.  		struct trap *t=t_at(u.ux,u.uy);
323.  		if (t->ttyp == TRAPDOOR)
324.  			pline("A trap door opens up under you!");
325.  		else
326.  			pline("There's a gaping hole under you!");
327.  	} else pline_The("%s opens up under you!", surface(u.ux,u.uy));
328.  
329.  	if (In_sokoban(&u.uz) && Can_fall_thru(&u.uz))
330.  	    ;	/* KMH -- You can't escape the Sokoban level traps */
331.  	else if(Levitation || u.ustuck || !Can_fall_thru(&u.uz)
332.  	   || Flying || is_clinger(youmonst.data)
333.  	   || (Inhell && !u.uevent.invoked &&
334.  					newlevel == dunlevs_in_dungeon(&u.uz))
335.  		) {
336.  	    dont_fall = "don't fall in.";
337.  	} else if (youmonst.data->msize >= MZ_HUGE) {
338.  	    dont_fall = "don't fit through.";
339.  	} else if (!next_to_u()) {
340.  	    dont_fall = "are jerked back by your pet!";
341.  	}
342.  	if (dont_fall) {
343.  	    You(dont_fall);
344.  	    /* hero didn't fall through, but any objects here might */
345.  	    impact_drop((struct obj *)0, u.ux, u.uy, 0);
346.  	    if (!td) {
347.  		display_nhwindow(WIN_MESSAGE, FALSE);
348.  		pline_The("opening under you closes up.");
349.  	    }
350.  	    return;
351.  	}
352.  
353.  	if(*u.ushops) shopdig(1);
354.  	if (Is_stronghold(&u.uz)) {
355.  	    find_hell(&dtmp);
356.  	} else {
357.  	    dtmp.dnum = u.uz.dnum;
358.  	    dtmp.dlevel = newlevel;
359.  	}
360.  	if (!td)
361.  	    Sprintf(msgbuf, "The hole in the %s above you closes up.",
362.  		    ceiling(u.ux,u.uy));
363.  	schedule_goto(&dtmp, FALSE, TRUE, 0,
364.  		      (char *)0, !td ? msgbuf : (char *)0);
365.  }
366.  
367.  /*
368.   * Animate the given statue.  May have been via shatter attempt, trap,
369.   * or stone to flesh spell.  Return a monster if successfully animated.
370.   * If the monster is animated, the object is deleted.  If fail_reason
371.   * is non-null, then fill in the reason for failure (or success).
372.   *
373.   * The cause of animation is:
374.   *
375.   *	ANIMATE_NORMAL  - hero "finds" the monster
376.   *	ANIMATE_SHATTER - hero tries to destroy the statue
377.   *	ANIMATE_SPELL   - stone to flesh spell hits the statue
378.   *
379.   * Perhaps x, y is not needed if we can use get_obj_location() to find
380.   * the statue's location... ???
381.   */
382.  struct monst *
383.  animate_statue(statue, x, y, cause, fail_reason)
384.  struct obj *statue;
385.  xchar x, y;
386.  int cause;
387.  int *fail_reason;
388.  {
389.  	struct permonst *mptr;
390.  	struct monst *mon = 0;
391.  	struct obj *item;
392.  
393.  	/*
394.  	 * Guard against someone wishing for a statue of a unique monster
395.  	 * (which is allowed in normal play) and then tossing it onto the
396.  	 * [detected or guessed] location of a statue trap.  Normally the
397.  	 * uppermost statue is the one which would be activated.
398.  	 */
399.  	mptr = &mons[statue->corpsenm];
400.  	if (mptr->geno & G_UNIQ) {
401.  	    if (fail_reason) *fail_reason = AS_MON_IS_UNIQUE;
402.  	    return (struct monst *)0;
403.  	    }
404.  
405.  	if ((mon = makemon(mptr, x, y, NO_MINVENT)) == 0) {
406.  	    if (fail_reason) *fail_reason = AS_NO_MON;
407.  	    return (struct monst *)0;
408.  	    }
409.  
410.  	/* if statue has been named, give same name to the monster */
411.  	if (statue->onamelth)
412.  	    mon = christen_monst(mon, ONAME(statue));
413.  	/* transfer any statue contents to monster's inventory */
414.  	while ((item = statue->cobj) != 0) {
415.  	    obj_extract_self(item);
416.  	    add_to_minv(mon, item);
417.  	}
418.  	m_dowear(mon, TRUE);
419.  	delobj(statue);
420.  	/* mimic statue becomes seen mimic; other hiders won't be hidden */
421.  	if (mon->m_ap_type) seemimic(mon);
422.  	else mon->mundetected = FALSE;
423.  	if ((x == u.ux && y == u.uy) || cause == ANIMATE_SPELL)
424.  	    pline_The("statue comes to life!");
425.  	else if (cause == ANIMATE_SHATTER)
426.  	    pline("Instead of shattering, the statue suddenly comes alive!");
427.  	else /* cause == ANIMATE_NORMAL */
428.  	    You("find %s posing as a statue.", a_monnam(mon));
429.  	/* avoid hiding under nothing */
430.  	if (x == u.ux && y == u.uy &&
431.  		Upolyd && hides_under(youmonst.data) && !OBJ_AT(x, y))
432.  	    u.uundetected = 0;
433.  
434.  	if (fail_reason) *fail_reason = AS_OK;
435.  	return mon;
436.  }
437.  
438.  /*
439.   * You've either stepped onto a statue trap's location or you've triggered a
440.   * statue trap by searching next to it or by trying to break it with a wand
441.   * or pick-axe.
442.   */
443.  struct monst *
444.  activate_statue_trap(trap, x, y, shatter)
445.  struct trap *trap;
446.  xchar x, y;
447.  boolean shatter;
448.  {
449.  	struct monst *mtmp = (struct monst *)0;
450.  	struct obj *otmp = sobj_at(STATUE, x, y);
451.  	int fail_reason;
452.  
453.  	/*
454.  	 * Try to animate the first valid statue.  Stop the loop when we
455.  	 * actually create something or the failure cause is not because
456.  	 * the mon was unique.
457.  	 */
458.  	deltrap(trap);
459.  	while (otmp) {
460.  	    mtmp = animate_statue(otmp, x, y,
461.  		    shatter ? ANIMATE_SHATTER : ANIMATE_NORMAL, &fail_reason);
462.  	    if (mtmp || fail_reason != AS_MON_IS_UNIQUE) break;
463.  
464.  	    while ((otmp = otmp->nexthere) != 0)
465.  		if (otmp->otyp == STATUE) break;
466.  	}
467.  
468.  	if (Blind) feel_location(x, y);
469.  	else newsym(x, y);
470.  	return mtmp;
471.  }
472.  
473.  void
474.  dotrap(trap)
475.  register struct trap *trap;
476.  {
477.  	register int ttype = trap->ttyp;
478.  	register struct obj *otmp;
479.  	boolean already_seen = trap->tseen;
480.  
481.  	nomul(0);
482.  
483.  	/* KMH -- You can't escape the Sokoban level traps */
484.  	if (In_sokoban(&u.uz) &&
485.  			(ttype == PIT || ttype == SPIKED_PIT || ttype == HOLE ||
486.  			ttype == TRAPDOOR)) {
487.  	    if (Levitation || Flying)
488.  		pline("Air currents pull you down!");
489.  	    /* then proceed to normal trap effect */
490.  	} else if (already_seen) {
491.  	    if ((Levitation || Flying) &&
492.  		    (ttype == PIT || ttype == SPIKED_PIT || ttype == HOLE ||
493.  		    ttype == BEAR_TRAP)) {
494.  		You("%s over %s %s.",
495.  		    Levitation ? "float" : "fly",
496.  		    a_your[trap->madeby_u],
497.  		    defsyms[trap_to_defsym(ttype)].explanation);
498.  		return;
499.  	    }
500.  	    if(!Fumbling && ttype != MAGIC_PORTAL && ttype != ANTI_MAGIC &&
501.  		(!rn2(5) ||
502.  	    ((ttype == PIT || ttype == SPIKED_PIT) && is_clinger(youmonst.data)))) {
503.  		You("escape %s %s.",
504.  		    (ttype == ARROW_TRAP && !trap->madeby_u) ? "an" :
505.  			a_your[trap->madeby_u],
506.  		    defsyms[trap_to_defsym(ttype)].explanation);
507.  		return;
508.  	    }
509.  	}
510.  
511.  	switch(ttype) {
512.  	    case ARROW_TRAP:
513.  		seetrap(trap);
514.  		pline("An arrow shoots out at you!");
515.  		otmp = mksobj(ARROW, TRUE, FALSE);
516.  		otmp->quan = 1L;
517.  		otmp->owt = weight(otmp);
518.  		if (thitu(8, dmgval(otmp, &youmonst), otmp, "arrow")) {
519.  		    obfree(otmp, (struct obj *)0);
520.  		} else {
521.  		    place_object(otmp, u.ux, u.uy);
522.  		    if (!Blind) otmp->dknown = 1;
523.  		    stackobj(otmp);
524.  		    newsym(u.ux, u.uy);
525.  		}
526.  		break;
527.  	    case DART_TRAP:
528.  		seetrap(trap);
529.  		pline("A little dart shoots out at you!");
530.  		otmp = mksobj(DART, TRUE, FALSE);
531.  		otmp->quan = 1L;
532.  		otmp->owt = weight(otmp);
533.  		if (!rn2(6)) otmp->opoisoned = 1;
534.  		if (thitu(7, dmgval(otmp, &youmonst), otmp, "little dart")) {
535.  		    if (otmp->opoisoned)
536.  			poisoned("dart",A_CON,"poison dart",10);
537.  		    obfree(otmp, (struct obj *)0);
538.  		} else {
539.  		    place_object(otmp, u.ux, u.uy);
540.  		    if (!Blind) otmp->dknown = 1;
541.  		    stackobj(otmp);
542.  		    newsym(u.ux, u.uy);
543.  		}
544.  		break;
545.  	    case ROCKTRAP:
546.  		{
547.  		    int dmg = d(2,6); /* should be std ROCK dmg? */
548.  
549.  		    seetrap(trap);
550.  		    otmp = mksobj_at(ROCK, u.ux, u.uy, TRUE);
551.  		    otmp->quan = 1L;
552.  		    otmp->owt = weight(otmp);
553.  
554.      pline("A trap door in the %s opens and a rock falls on your %s!",
555.  			    ceiling(u.ux,u.uy),
556.  			    body_part(HEAD));
557.  
558.  		    if (uarmh) {
559.  			if(is_metallic(uarmh)) {
560.  			    pline("Fortunately, you are wearing a hard helmet.");
561.  			    dmg = 2;
562.  			} else if (flags.verbose) {
563.  			    Your("%s does not protect you.", xname(uarmh));
564.  			}
565.  		    }
566.  
567.  		    if (!Blind) otmp->dknown = 1;
568.  		    stackobj(otmp);
569.  		    newsym(u.ux,u.uy);	/* map the rock */
570.  
571.  		    losehp(dmg, "falling rock", KILLED_BY_AN);
572.  		    exercise(A_STR, FALSE);
573.  		}
574.  		break;
575.  
576.  	    case SQKY_BOARD:	    /* stepped on a squeaky board */
577.  		if (Levitation || Flying) {
578.  		    if (!Blind) {
579.  			seetrap(trap);
580.  			if (Hallucination)
581.  				You("notice a crease in the linoleum.");
582.  			else
583.  				You("notice a loose board below you.");
584.  		    }
585.  		} else {
586.  		    seetrap(trap);
587.  		    pline("A board beneath you squeaks loudly.");
588.  		    wake_nearby();
589.  		}
590.  		break;
591.  
592.  	    case BEAR_TRAP:
593.  		if(Levitation || Flying) break;
594.  		seetrap(trap);
595.  		if(amorphous(youmonst.data) || is_whirly(youmonst.data) ||
596.  						    unsolid(youmonst.data)) {
597.  		    pline("%s bear trap closes harmlessly through you.",
598.  			    A_Your[trap->madeby_u]);
599.  		    break;
600.  		}
601.  		if(youmonst.data->msize <= MZ_SMALL) {
602.  		    pline("%s bear trap closes harmlessly over you.",
603.  			    A_Your[trap->madeby_u]);
604.  		    break;
605.  		}
606.  		u.utrap = rn1(4, 4);
607.  		u.utraptype = TT_BEARTRAP;
608.  #ifdef STEED
609.  		if (u.usteed) {
610.  		    pline("%s bear trap closes on %s %s!",
611.  			A_Your[trap->madeby_u], s_suffix(mon_nam(u.usteed)),
612.  			body_part(FOOT));
613.  		} else
614.  #endif
615.  		{
616.  		    pline("%s bear trap closes on your %s!",
617.  			    A_Your[trap->madeby_u], body_part(FOOT));
618.  		    if(u.umonnum == PM_OWLBEAR || u.umonnum == PM_BUGBEAR)
619.  			You("howl in anger!");
620.  		}
621.  		exercise(A_DEX, FALSE);
622.  		break;
623.  
624.  	    case SLP_GAS_TRAP:
625.  		seetrap(trap);
626.  		if(Sleep_resistance) {
627.  		    You("are enveloped in a cloud of gas!");
628.  		    break;
629.  		}
630.  		pline("A cloud of gas puts you to sleep!");
631.  		flags.soundok = 0;
632.  		fall_asleep(-rnd(25), TRUE);
633.  		afternmv = Hear_again;
634.  		break;
635.  
636.  	    case RUST_TRAP:
637.  		seetrap(trap);
638.  		if (u.umonnum == PM_IRON_GOLEM) {
639.  		    pline("%s you!", A_gush_of_water_hits);
640.  		    You("are covered with rust!");
641.  		    rehumanize();
642.  		    break;
643.  		} else if (u.umonnum == PM_GREMLIN && rn2(3)) {
644.  		    pline("%s you!", A_gush_of_water_hits);
645.  		    (void)split_mon(&youmonst, (struct monst *)0);
646.  		    break;
647.  		}
648.  
649.  	    /* Unlike monsters, traps cannot aim their rust attacks at
650.  	     * you, so instead of looping through and taking either the
651.  	     * first rustable one or the body, we take whatever we get,
652.  	     * even if it is not rustable.
653.  	     */
654.  		switch (rn2(5)) {
655.  		    case 0:
656.  			pline("%s you on the %s!", A_gush_of_water_hits,
657.  				    body_part(HEAD));
658.  			(void) rust_dmg(uarmh, "helmet", 1, TRUE, &youmonst);
659.  			break;
660.  		    case 1:
661.  			pline("%s your left %s!", A_gush_of_water_hits,
662.  				    body_part(ARM));
663.  			if (rust_dmg(uarms, "shield", 1, TRUE, &youmonst))
664.  			    break;
665.  			if (uwep && bimanual(uwep))
666.  			    goto two_hand;
667.  			/* Two goto statements in a row--aaarrrgggh! */
668.  glovecheck:		(void) rust_dmg(uarmg, "gauntlets", 1, TRUE, &youmonst);
669.  			/* Not "metal gauntlets" since it gets called
670.  			 * even if it's leather for the message
671.  			 */
672.  			break;
673.  		    case 2:
674.  			pline("%s your right %s!", A_gush_of_water_hits,
675.  				    body_part(ARM));
676.  two_hand:		erode_weapon(&youmonst, FALSE);
677.  			goto glovecheck;
678.  		    default:
679.  			pline("%s you!", A_gush_of_water_hits);
680.  			for (otmp=invent; otmp; otmp = otmp->nobj)
681.  				    (void) snuff_lit(otmp);
682.  			if (uarmc)
683.  			    (void) rust_dmg(uarmc, "cloak", 1, TRUE, &youmonst);
684.  			else if (uarm)
685.  			    (void) rust_dmg(uarm, "armor", 1, TRUE, &youmonst);
686.  #ifdef TOURIST
687.  			else if (uarmu)
688.  			    (void) rust_dmg(uarmu, "shirt", 1, TRUE, &youmonst);
689.  #endif
690.  		}
691.  		break;
692.  
693.  	    case FIRE_TRAP:
694.  		seetrap(trap);
695.  		dofiretrap((struct obj *)0);
696.  		break;
697.  
698.  	    case PIT:
699.  	    case SPIKED_PIT:
700.  		/* KMH -- You can't escape the Sokoban level traps */
701.  		if (!In_sokoban(&u.uz) && (Levitation || Flying)) break;
702.  		seetrap(trap);
703.  		if (is_clinger(youmonst.data)) {
704.  		    if(trap->tseen) {
705.  			You("see %s %spit below you.", a_your[trap->madeby_u],
706.  			    ttype == SPIKED_PIT ? "spiked " : "");
707.  		    } else {
708.  			pline("%s pit %sopens up under you!",
709.  			    A_Your[trap->madeby_u],
710.  			    ttype == SPIKED_PIT ? "full of spikes " : "");
711.  			You("don't fall in!");
712.  		    }
713.  		    break;
714.  		}
715.  		You("fall into %s pit!", a_your[trap->madeby_u]);
716.  		if (ttype == SPIKED_PIT)
717.  		    You("land on a set of sharp iron spikes!");
718.  		if (!Passes_walls)
719.  		    u.utrap = rn1(6,2);
720.  		u.utraptype = TT_PIT;
721.  		if (ttype == SPIKED_PIT) {
722.  		    losehp(rnd(10),"fell into a pit of iron spikes",
723.  			NO_KILLER_PREFIX);
724.  		    if (!rn2(6))
725.  			poisoned("spikes", A_STR, "fall onto poison spikes", 8);
726.  		} else
727.  		    losehp(rnd(6),"fell into a pit", NO_KILLER_PREFIX);
728.  		if (Punished && !carried(uball)) {
729.  		    unplacebc();
730.  		    ballfall();
731.  		    placebc();
732.  		}
733.  		selftouch("Falling, you");
734.  		vision_full_recalc = 1;	/* vision limits change */
735.  		exercise(A_STR, FALSE);
736.  		exercise(A_DEX, FALSE);
737.  		break;
738.  	    case HOLE:
739.  	    case TRAPDOOR:
740.  		seetrap(trap);
741.  		if (!Can_fall_thru(&u.uz)) {
742.  		    impossible("dotrap: %ss cannot exist on this level.",
743.  			       defsyms[trap_to_defsym(ttype)].explanation);
744.  		    break;		/* don't activate it after all */
745.  		}
746.  		fall_through(TRUE);
747.  		break;
748.  
749.  	    case TELEP_TRAP:
750.  		seetrap(trap);
751.  		tele_trap(trap);
752.  		break;
753.  	    case LEVEL_TELEP:
754.  		seetrap(trap);
755.  		level_tele_trap(trap);
756.  		break;
757.  
758.  	    case WEB: /* Our luckless player has stumbled into a web. */
759.  		seetrap(trap);
760.  		if (amorphous(youmonst.data) || is_whirly(youmonst.data) ||
761.  						    unsolid(youmonst.data)) {
762.  		    if (acidic(youmonst.data) || u.umonnum == PM_GELATINOUS_CUBE ||
763.  			u.umonnum == PM_FIRE_ELEMENTAL) {
764.  			You("%s %s spider web!",
765.  			    (u.umonnum == PM_FIRE_ELEMENTAL) ? "burn" : "dissolve",
766.  			    a_your[trap->madeby_u]);
767.  			deltrap(trap);
768.  			newsym(u.ux,u.uy);
769.  			break;
770.  		    }
771.  		    You("flow through %s spider web.",
772.  			    a_your[trap->madeby_u]);
773.  		    break;
774.  		}
775.  		if (youmonst.data->mlet == S_SPIDER) {
776.  		    pline(trap->madeby_u ? "You take a walk on your web."
777.  					 : "There is a spider web here.");
778.  		    break;
779.  		}
780.  		You("%s into %s spider web!",
781.  		      Levitation ? (const char *)"float" :
782.  		      locomotion(youmonst.data, "stumble"),
783.  		      a_your[trap->madeby_u]);
784.  		u.utraptype = TT_WEB;
785.  
786.  		/* Time stuck in the web depends on your strength. */
787.  		{
788.  		    register int str = ACURR(A_STR);
789.  
790.  		    if (str == 3) u.utrap = rn1(6,6);
791.  		    else if (str < 6) u.utrap = rn1(6,4);
792.  		    else if (str < 9) u.utrap = rn1(4,4);
793.  		    else if (str < 12) u.utrap = rn1(4,2);
794.  		    else if (str < 15) u.utrap = rn1(2,2);
795.  		    else if (str < 18) u.utrap = rnd(2);
796.  		    else if (str < 69) u.utrap = 1;
797.  		    else {
798.  			u.utrap = 0;
799.  			You("tear through %s web!", a_your[trap->madeby_u]);
800.  			deltrap(trap);
801.  			newsym(u.ux,u.uy);	/* get rid of trap symbol */
802.  		    }
803.  		}
804.  		break;
805.  
806.  	    case STATUE_TRAP:
807.  		(void) activate_statue_trap(trap, u.ux, u.uy, FALSE);
808.  		break;
809.  
810.  	    case MAGIC_TRAP:	    /* A magic trap. */
811.  		seetrap(trap);
812.  		if (!rn2(30)) {
813.  		    deltrap(trap);
814.  		    newsym(u.ux,u.uy);	/* update position */
815.  		    You("are caught in a magical explosion!");
816.  		    losehp(rnd(10), "magical explosion", KILLED_BY_AN);
817.  		    Your("body absorbs some of the magical energy!");
818.  		    u.uen = (u.uenmax += 2);
819.  		} else domagictrap();
820.  		break;
821.  
822.  	    case ANTI_MAGIC:
823.  		seetrap(trap);
824.  		if(Antimagic) {
825.  		    shieldeff(u.ux, u.uy);
826.  		    You_feel("momentarily lethargic.");
827.  		} else drain_en(rnd(u.ulevel) + 1);
828.  		break;
829.  
830.  	    case POLY_TRAP:
831.  		seetrap(trap);
832.  		You("%s onto a polymorph trap!",
833.  		    Levitation ? (const char *)"float" :
834.  		    locomotion(youmonst.data, "step"));
835.  		if(Antimagic || Unchanging) {
836.  		    shieldeff(u.ux, u.uy);
837.  		    You_feel("momentarily different.");
838.  		    /* Trap did nothing; don't remove it --KAA */
839.  		} else {
840.  		    deltrap(trap);	/* delete trap before polymorph */
841.  		    newsym(u.ux,u.uy);	/* get rid of trap symbol */
842.  		    You_feel("a change coming over you.");
843.  		    polyself();
844.  		}
845.  		break;
846.  
847.  	    case LANDMINE:
848.  		if (Levitation || Flying) {
849.  		    if (!already_seen && rn2(3)) break;
850.  		    seetrap(trap);
851.  		    pline("%s %s in a pile of soil below you.",
852.  			    already_seen ? "There is" : "You discover",
853.  			    trap->madeby_u ? "the trigger of your mine" :
854.  					     "a trigger");
855.  		    if (already_seen && rn2(3)) break;
856.  		    pline("KAABLAMM!!!  The air currents set %s%s off!",
857.  			    already_seen ? a_your[trap->madeby_u] : "",
858.  			    already_seen ? " land mine" : "it");
859.  		} else {
860.  		    seetrap(trap);
861.  		    pline("KAABLAMM!!!  You triggered %s land mine!",
862.  					    a_your[trap->madeby_u]);
863.  		    set_wounded_legs(LEFT_SIDE, rn1(35, 41));
864.  		    set_wounded_legs(RIGHT_SIDE, rn1(35, 41));
865.  		    exercise(A_DEX, FALSE);
866.  		}
867.  		blow_up_landmine(trap);
868.  		newsym(u.ux,u.uy);		/* update trap symbol */
869.  		losehp(rnd(16), "land mine", KILLED_BY_AN);
870.  		/* fall recursively into the pit... */
871.  		if ((trap = t_at(u.ux, u.uy)) != 0) dotrap(trap);
872.  		break;
873.  
874.  	    case ROLLING_BOULDER_TRAP:
875.  		seetrap(trap);
876.  		pline("Click! You trigger a rolling boulder trap!");
877.  		if(!launch_obj(BOULDER, trap->launch.x, trap->launch.y,
878.  		      trap->launch2.x,trap->launch2.y, ROLL)) {
879.  		    deltrap(trap);
880.  		    newsym(u.ux,u.uy);	/* get rid of trap symbol */
881.  		    pline("Fortunately for you, no boulder was released.");
882.  		}
883.  		break;
884.  
885.  	    case MAGIC_PORTAL:
886.  		seetrap(trap);
887.  		domagicportal(trap);
888.  		break;
889.  
890.  	    default:
891.  		seetrap(trap);
892.  		impossible("You hit a trap of type %u", trap->ttyp);
893.  	}
894.  }
895.  
896.  /* some actions common to both player and monsters for triggered landmine */
897.  STATIC_OVL void
898.  blow_up_landmine(trap)
899.  struct trap *trap;
900.  {
901.  	scatter(trap->tx, trap->ty, 4,
902.  		MAY_DESTROY | MAY_HIT | MAY_FRACTURE | VIS_EFFECTS,
903.  		(struct obj *)0);
904.  	del_engr_at(trap->tx, trap->ty);
905.  	wake_nearto(trap->tx, trap->ty, 400);
906.  	if (IS_DOOR(levl[trap->tx][trap->ty].typ))
907.  	    levl[trap->tx][trap->ty].doormask = D_BROKEN;
908.  	/* TODO: destroy drawbridge if present;
909.  		 sometimes delete trap instead of always leaving a pit */
910.  	trap->ttyp = PIT;		/* explosion creates a pit */
911.  	trap->madeby_u = FALSE;		/* resulting pit isn't yours */
912.  }
913.  
914.  #endif /* OVLB */
915.  #ifdef OVL3
916.  
917.  /*
918.   * Move obj from (x1,y1) to (x2,y2)
919.   *
920.   * Return 0 if no object was launched.
921.   *        1 if an object was launched and placed somewhere.
922.   *        2 if an object was launched, but used up.
923.   */
924.  int
925.  launch_obj(otyp, x1, y1, x2, y2, style)
926.  short otyp;
927.  register int x1,y1,x2,y2;
928.  int style;
929.  {
930.  	register struct monst *mtmp;
931.  	register struct obj *otmp;
932.  	register int dx,dy;
933.  	struct obj *singleobj;
934.  	boolean used_up = FALSE;
935.  	boolean otherside = FALSE;
936.  	int dist;
937.  	int tmp;
938.  	int delaycnt = 0;
939.  
940.  	otmp = sobj_at(otyp, x1, y1);
941.  	/* Try the other side too, for rolling boulder traps */
942.  	if (!otmp && otyp == BOULDER) {
943.  		otherside = TRUE;
944.  		otmp = sobj_at(otyp, x2, y2);
945.  	}
946.  	if (!otmp) return 0;
947.  	if (otherside) {	/* swap 'em */
948.  		int tx, ty;
949.  
950.  		tx = x1; ty = y1;
951.  		x1 = x2; y1 = y2;
952.  		x2 = tx; y2 = ty;
953.  	}
954.  
955.  	if (otmp->quan == 1L) {
956.  	    obj_extract_self(otmp);
957.  	    singleobj = otmp;
958.  	    otmp = (struct obj *) 0;
959.  	} else {
960.  	    singleobj = splitobj(otmp, otmp->quan - 1L);
961.  	    obj_extract_self(singleobj);
962.  	}
963.  	newsym(x1,y1);
964.  	/* in case you're using a pick-axe to chop the boulder that's being
965.  	   launched (perhaps a monster triggered it), destroy context so that
966.  	   next dig attempt never thinks you're resuming previous effort */
967.  	if ((otyp == BOULDER || otyp == STATUE) &&
968.  	    singleobj->ox == digging.pos.x && singleobj->oy == digging.pos.y)
969.  	    (void) memset((genericptr_t)&digging, 0, sizeof digging);
970.  
971.  	dist = distmin(x1,y1,x2,y2);
972.  	bhitpos.x = x1;
973.  	bhitpos.y = y1;
974.  	dx = sgn(x2 - x1);
975.  	dy = sgn(y2 - y1);
976.  	switch (style) {
977.  	    case ROLL:
978.  			delaycnt = 2;
979.  			/* fall through */
980.  	    default:
981.  			if (!delaycnt) delaycnt = 1;
982.  			if (!cansee(bhitpos.x,bhitpos.y)) curs_on_u();
983.  			tmp_at(DISP_FLASH, obj_to_glyph(singleobj));
984.  			tmp_at(bhitpos.x, bhitpos.y);
985.  	}
986.  
987.  	/* Set the object in motion */
988.  	while(dist-- > 0 && !used_up) {
989.  		tmp_at(bhitpos.x, bhitpos.y);
990.  		tmp = delaycnt;
991.  
992.  		/* dstage@u.washington.edu -- Delay only if hero sees it */
993.  		if (cansee(bhitpos.x, bhitpos.y))
994.  			while (tmp-- > 0) delay_output();
995.  
996.  		bhitpos.x += dx;
997.  		bhitpos.y += dy;
998.  
999.  		if ((mtmp = m_at(bhitpos.x, bhitpos.y)) != 0) {
1000. 			if (otyp == BOULDER && throws_rocks(mtmp->data)) {
1001. 			    if (rn2(3)) {
1002. 				pline("%s snatches the boulder.",
1003. 					Monnam(mtmp));
1004. 				mpickobj(mtmp, singleobj);
1005. 				used_up = TRUE;
1006. 				break;
1007. 			    }
1008. 			}
1009. 			if (ohitmon(mtmp,singleobj,
1010. 					(style==ROLL) ? -1 : dist, FALSE)) {
1011. 				used_up = TRUE;
1012. 				break;
1013. 			}
1014. 		} else if (bhitpos.x==u.ux && bhitpos.y==u.uy) {
1015. 			int hitvalu, hitu;
1016. 			if (multi) nomul(0);
1017. 			hitvalu = 9 + singleobj->spe;
1018. 			hitu = thitu(hitvalu,
1019. 				dmgval(singleobj, &youmonst),
1020. 				singleobj,
1021. 				xname(singleobj));
1022. 			if (hitu) stop_occupation();
1023. 		}
1024. 		if (style == ROLL) {
1025. 		    if (down_gate(bhitpos.x, bhitpos.y) != -1) {
1026. 		       if (ship_object(singleobj, bhitpos.x, bhitpos.y, FALSE)){
1027. 				used_up = TRUE;
1028. 				break;
1029. 			}
1030. 		    }
1031. 		    if (flooreffects(singleobj, bhitpos.x, bhitpos.y, "fall")) {
1032. 			used_up = TRUE;
1033. 			break;
1034. 		    }
1035. 		}
1036. 		if (otyp == BOULDER && closed_door(bhitpos.x,bhitpos.y)) {
1037. 			if (cansee(bhitpos.x, bhitpos.y))
1038. 				pline_The("boulder crashes through a door.");
1039. 			levl[bhitpos.x][bhitpos.y].doormask = D_BROKEN;
1040. 		}
1041. 	}
1042. 	tmp_at(DISP_END, 0);
1043. 	if (!used_up) {
1044. 		place_object(singleobj, x2,y2);
1045. 		newsym(x2,y2);
1046. 		return 1;
1047. 	} else
1048. 		return 2;
1049. }
1050. #endif /* OVL3 */
1051. #ifdef OVLB
1052. 
1053. void
1054. seetrap(trap)
1055. 	register struct trap *trap;
1056. {
1057. 	if(!trap->tseen) {
1058. 	    trap->tseen = 1;
1059. 	    newsym(trap->tx, trap->ty);
1060. 	}
1061. }
1062. 
1063. #endif /* OVLB */
1064. #ifdef OVL3
1065. 
1066. STATIC_OVL int
1067. mkroll_launch(ttmp, x, y, otyp, ocount)
1068. struct trap *ttmp;
1069. xchar x,y;
1070. short otyp;
1071. long ocount;
1072. {
1073. 	struct obj *otmp;
1074. 	register int tmp;
1075. 	schar dx,dy;
1076. 	int distance;
1077. 	coord cc;
1078. 	coord bcc;
1079. 	int trycount = 0;
1080. 	boolean success = FALSE;
1081. 	int mindist = 4;
1082. 
1083. 	if (ttmp->ttyp == ROLLING_BOULDER_TRAP) mindist = 2;
1084. 	distance = rn1(5,4);    /* 4..8 away */
1085. 	tmp = rn2(8);		/* randomly pick a direction to try first */
1086. 	while (distance >= mindist) {
1087. 		dx = xdir[tmp];
1088. 		dy = ydir[tmp];
1089. 		cc.x = x; cc.y = y;
1090. 		/* Prevent boulder from being placed on water */
1091. 		if (ttmp->ttyp == ROLLING_BOULDER_TRAP
1092. 				&& is_pool(x+distance*dx,y+distance*dy))
1093. 			success = FALSE;
1094. 		else success = isclearpath(&cc, distance, dx, dy);
1095. 		if (ttmp->ttyp == ROLLING_BOULDER_TRAP) {
1096. 			boolean success_otherway;
1097. 			bcc.x = x; bcc.y = y;
1098. 			success_otherway = isclearpath(&bcc, distance,
1099. 						-(dx), -(dy));
1100. 			if (!success_otherway) success = FALSE;
1101. 		}
1102. 		if (success) break;
1103. 		if (++tmp > 7) tmp = 0;
1104. 		if ((++trycount % 8) == 0) --distance;
1105. 	}
1106. 	if (!success) {
1107. 	    /* create the trap without any ammo, launch pt at trap location */
1108. 		cc.x = bcc.x = x;
1109. 		cc.y = bcc.y = y;
1110. 	} else {
1111. 		otmp = mksobj(otyp, TRUE, FALSE);
1112. 		otmp->quan = ocount;
1113. 		otmp->owt = weight(otmp);
1114. 		place_object(otmp, cc.x, cc.y);
1115. 		stackobj(otmp);
1116. 	}
1117. 	ttmp->launch.x = cc.x;
1118. 	ttmp->launch.y = cc.y;
1119. 	if (ttmp->ttyp == ROLLING_BOULDER_TRAP) {
1120. 		ttmp->launch2.x = bcc.x;
1121. 		ttmp->launch2.y = bcc.y;
1122. 	} else
1123. 		ttmp->launch_otyp = otyp;
1124. 	newsym(ttmp->launch.x, ttmp->launch.y);
1125. 	return 1;
1126. }
1127. 
1128. STATIC_OVL boolean
1129. isclearpath(cc,distance,dx,dy)
1130. coord *cc;
1131. int distance;
1132. schar dx,dy;
1133. {
1134. 	uchar typ;
1135. 	xchar x, y;
1136. 
1137. 	x = cc->x;
1138. 	y = cc->y;
1139. 	while (distance-- > 0) {
1140. 		x += dx;
1141. 		y += dy;
1142. 		typ = levl[x][y].typ;
1143. 		if (!isok(x,y) || !ZAP_POS(typ) || closed_door(x,y))
1144. 			return FALSE;
1145. 	}
1146. 	cc->x = x;
1147. 	cc->y = y;
1148. 	return TRUE;
1149. }
1150. #endif /* OVL3 */
1151. #ifdef OVL1
1152. 
1153. int
1154. mintrap(mtmp)
1155. register struct monst *mtmp;
1156. {
1157. 	register struct trap *trap = t_at(mtmp->mx, mtmp->my);
1158. 	boolean trapkilled = FALSE;
1159. 	struct permonst *mptr = mtmp->data;
1160. 	struct obj *otmp;
1161. 
1162. 	if (!trap) {
1163. 	    mtmp->mtrapped = 0;	/* perhaps teleported? */
1164. 	} else if (mtmp->mtrapped) {	/* is currently in the trap */
1165. 	    if (!rn2(40)) {
1166. 		if (sobj_at(BOULDER, mtmp->mx, mtmp->my) &&
1167. 			(trap->ttyp == PIT || trap->ttyp == SPIKED_PIT)) {
1168. 		    if (!rn2(2)) {
1169. 			mtmp->mtrapped = 0;
1170. 			if (canseemon(mtmp))
1171. 			    pline("%s pulls free...", Monnam(mtmp));
1172. 			fill_pit(mtmp->mx, mtmp->my);
1173. 		    }
1174. 		} else {
1175. 		    mtmp->mtrapped = 0;
1176. 		}
1177. 	    } else if (trap->ttyp == BEAR_TRAP && metallivorous(mptr)) {
1178. 		if (canseemon(mtmp))
1179. 		    pline("%s eats a bear trap!", Monnam(mtmp));
1180. 		deltrap(trap);
1181. 		mtmp->meating = 5;
1182. 		mtmp->mtrapped = 0;
1183. 	    }
1184. 	} else {
1185. 	    register int tt = trap->ttyp;
1186. 	    boolean in_sight, tear_web, see_it,
1187. 		    inescapable = ((tt == HOLE || tt == PIT) &&
1188. 				   In_sokoban(&u.uz) && !trap->madeby_u);
1189. 	    const char *fallverb;
1190. 
1191. 	    if (!inescapable &&
1192. 		    ((mtmp->mtrapseen & (1 << (tt-1))) != 0 ||
1193. 			(tt == HOLE && !mindless(mtmp->data)))) {
1194. 		/* it has been in such a trap - perhaps it escapes */
1195. 		if(rn2(4)) return(0);
1196. 	    } else {
1197. 		mtmp->mtrapseen |= (1 << (tt-1));
1198. 	    }
1199. 	    /* Monster is aggravated by being trapped by you.
1200. 	       Recognizing who made the trap isn't completely
1201. 	       unreasonable; everybody has their own style. */
1202. 	    if (trap->madeby_u && rnl(5)) setmangry(mtmp);
1203. 
1204. 	    /* bug?  `in_sight' ought to be split to distinguish between
1205. 	       trap_in_sight and can_see_victim to handle invisible monsters */
1206. 	    in_sight = canseemon(mtmp);
1207. 	    switch (tt) {
1208. 		case ARROW_TRAP:
1209. 			otmp = mksobj(ARROW, TRUE, FALSE);
1210. 			otmp->quan = 1L;
1211. 			otmp->owt = weight(otmp);
1212. 			if (in_sight) seetrap(trap);
1213. 			if(thitm(8, mtmp, otmp, 0)) trapkilled = TRUE;
1214. 			break;
1215. 		case DART_TRAP:
1216. 			otmp = mksobj(DART, TRUE, FALSE);
1217. 			otmp->quan = 1L;
1218. 			otmp->owt = weight(otmp);
1219. 			if (!rn2(6)) otmp->opoisoned = 1;
1220. 			if (in_sight) seetrap(trap);
1221. 			if(thitm(7, mtmp, otmp, 0)) trapkilled = TRUE;
1222. 			break;
1223. 		case ROCKTRAP:
1224. 			otmp = mksobj(ROCK, TRUE, FALSE);
1225. 			otmp->quan = 1L;
1226. 			otmp->owt = weight(otmp);
1227. 			if (in_sight) seetrap(trap);
1228. 			if (thitm(0, mtmp, otmp, d(2, 6)))
1229. 			    trapkilled = TRUE;
1230. 			break;
1231. 
1232. 		case SQKY_BOARD:
1233. 			if(is_flyer(mptr)) break;
1234. 			/* stepped on a squeaky board */
1235. 			if (in_sight) {
1236. 			    pline("A board beneath %s squeaks loudly.", mon_nam(mtmp));
1237. 			    seetrap(trap);
1238. 			} else
1239. 			   You_hear("a distant squeak.");
1240. 			/* wake up nearby monsters */
1241. 			wake_nearto(mtmp->mx, mtmp->my, 40);
1242. 			break;
1243. 
1244. 		case BEAR_TRAP:
1245. 			if(mptr->msize > MZ_SMALL &&
1246. 				!amorphous(mptr) && !is_flyer(mptr) &&
1247. 				!is_whirly(mptr) && !unsolid(mptr)) {
1248. 			    mtmp->mtrapped = 1;
1249. 			    if(in_sight) {
1250. 				pline("%s is caught in %s bear trap!",
1251. 				      Monnam(mtmp), a_your[trap->madeby_u]);
1252. 				seetrap(trap);
1253. 			    } else {
1254. 				if((mptr == &mons[PM_OWLBEAR]
1255. 				    || mptr == &mons[PM_BUGBEAR])
1256. 				   && flags.soundok)
1257. 				    You_hear("the roaring of an angry bear!");
1258. 			    }
1259. 			}
1260. 			break;
1261. 
1262. 		case SLP_GAS_TRAP:
1263. 			if (!resists_sleep(mtmp) &&
1264. 				!mtmp->msleeping && mtmp->mcanmove) {
1265. 			    mtmp->mcanmove = 0;
1266. 			    mtmp->mfrozen = rnd(25);
1267. 			    if (in_sight) {
1268. 				pline("%s suddenly falls asleep!",
1269. 				      Monnam(mtmp));
1270. 				seetrap(trap);
1271. 			    }
1272. 			}
1273. 			break;
1274. 
1275. 		case RUST_TRAP:
1276. 		    {
1277. 			struct obj *target;
1278. 
1279. 			if (in_sight)
1280. 			    seetrap(trap);
1281. 			switch (rn2(5)) {
1282. 			case 0:
1283. 			    if (in_sight)
1284. 				pline("%s %s on the %s!", A_gush_of_water_hits,
1285. 				    mon_nam(mtmp), mbodypart(mtmp, HEAD));
1286. 			    target = which_armor(mtmp, W_ARMH);
1287. 			    (void) rust_dmg(target, "helmet", 1, TRUE, mtmp);
1288. 			    break;
1289. 			case 1:
1290. 			    if (in_sight)
1291. 				pline("%s %s's left %s!", A_gush_of_water_hits,
1292. 				    mon_nam(mtmp), mbodypart(mtmp, ARM));
1293. 			    target = which_armor(mtmp, W_ARMS);
1294. 			    if (rust_dmg(target, "shield", 1, TRUE, mtmp))
1295. 				break;
1296. 			    target = MON_WEP(mtmp);
1297. 			    if (target && bimanual(target))
1298. 				goto two_hand;
1299. glovecheck:		    target = which_armor(mtmp, W_ARMG);
1300. 			    (void) rust_dmg(target, "gauntlets", 1, TRUE, mtmp);
1301. 			    break;
1302. 			case 2:
1303. 			    if (in_sight)
1304. 				pline("%s %s's right %s!", A_gush_of_water_hits,
1305. 				    mon_nam(mtmp), mbodypart(mtmp, ARM));
1306. two_hand:		    erode_weapon(mtmp, FALSE);
1307. 			    goto glovecheck;
1308. 			default:
1309. 			    if (in_sight)
1310. 				pline("%s %s!", A_gush_of_water_hits,
1311. 				    mon_nam(mtmp));
1312. 			    for (otmp=mtmp->minvent; otmp; otmp = otmp->nobj)
1313. 				(void) snuff_lit(otmp);
1314. 			    target = which_armor(mtmp, W_ARMC);
1315. 			    if (target)
1316. 				(void) rust_dmg(target, "cloak", 1, TRUE, mtmp);
1317. 			    else {
1318. 				target = which_armor(mtmp, W_ARM);
1319. 				if (target)
1320. 				    (void) rust_dmg(target, "armor", 1, TRUE, mtmp);
1321. #ifdef TOURIST
1322. 				else {
1323. 				    target = which_armor(mtmp, W_ARMU);
1324. 				    (void) rust_dmg(target, "shirt", 1, TRUE, mtmp);
1325. 				}
1326. #endif
1327. 			    }
1328. 			}
1329. 			if (mptr == &mons[PM_IRON_GOLEM]) {
1330. 				if (in_sight)
1331. 				    pline("%s falls to pieces!", Monnam(mtmp));
1332. 				else if(mtmp->mtame)
1333. 				    pline("May %s rust in peace.",
1334. 								mon_nam(mtmp));
1335. 				mondied(mtmp);
1336. 				if (mtmp->mhp <= 0)
1337. 					trapkilled = TRUE;
1338. 			} else if (mptr == &mons[PM_GREMLIN] && rn2(3)) {
1339. 				(void)split_mon(mtmp, (struct monst *)0);
1340. 			}
1341. 			break;
1342. 		    }
1343. 		case FIRE_TRAP:
1344.  mfiretrap:
1345. 			see_it = cansee(mtmp->mx, mtmp->my);
1346. 			if (in_sight)
1347. 			    pline("A %s erupts from the %s under %s!",
1348. 				  tower_of_flame,
1349. 				  surface(mtmp->mx,mtmp->my), mon_nam(mtmp));
1350. 			else if (see_it)  /* evidently `mtmp' is invisible */
1351. 			    You("see a %s erupt from the %s!",
1352. 				tower_of_flame, surface(mtmp->mx,mtmp->my));
1353. 
1354. 			if (resists_fire(mtmp)) {
1355. 			    if (in_sight) {
1356. 				shieldeff(mtmp->mx,mtmp->my);
1357. 				pline("%s is uninjured.", Monnam(mtmp));
1358. 			    }
1359. 			} else {
1360. 			    int num = d(2,4);
1361. 
1362. 			    if (thitm(0, mtmp, (struct obj *)0, num))
1363. 				trapkilled = TRUE;
1364. 			    else
1365. 				/* we know mhp is at least `num' below mhpmax,
1366. 				   so no (mhp > mhpmax) check is needed here */
1367. 				mtmp->mhpmax -= rn2(num + 1);
1368. 			}
1369. 			if (burnarmor(mtmp) || rn2(3)) {
1370. 			    (void) destroy_mitem(mtmp, SCROLL_CLASS, AD_FIRE);
1371. 			    (void) destroy_mitem(mtmp, SPBOOK_CLASS, AD_FIRE);
1372. 			    (void) destroy_mitem(mtmp, POTION_CLASS, AD_FIRE);
1373. 			}
1374. 			if (burn_floor_paper(mtmp->mx, mtmp->my, see_it) &&
1375. 				!see_it && distu(mtmp->mx, mtmp->my) <= 3*3)
1376. 			    You("smell smoke.");
1377. 			if (is_ice(mtmp->mx,mtmp->my))
1378. 			    melt_ice(mtmp->mx,mtmp->my);
1379. 			if (see_it) seetrap(trap);
1380. 			break;
1381. 
1382. 		case PIT:
1383. 		case SPIKED_PIT:
1384. 			fallverb = "falls";
1385. 			if (is_flyer(mptr) || is_floater(mptr) ||
1386. 				(mtmp->wormno && count_wsegs(mtmp) > 5) ||
1387. 				is_clinger(mptr)) {
1388. 			    if (!inescapable) break;	/* avoids trap */
1389. 			    fallverb = "is dragged";	/* sokoban pit */
1390. 			}
1391. 			if (!passes_walls(mptr))
1392. 			    mtmp->mtrapped = 1;
1393. 			if (in_sight) {
1394. 			    pline("%s %s into %s pit!",
1395. 				  Monnam(mtmp), fallverb,
1396. 				  a_your[trap->madeby_u]);
1397. 			    seetrap(trap);
1398. 			}
1399. 			mselftouch(mtmp, "Falling, ", FALSE);
1400. 			if (mtmp->mhp <= 0 ||
1401. 				thitm(0, mtmp, (struct obj *)0,
1402. 				      rnd((tt == PIT) ? 6 : 10)))
1403. 			    trapkilled = TRUE;
1404. 			break;
1405. 		case HOLE:
1406. 		case TRAPDOOR:
1407. 			if (!Can_fall_thru(&u.uz)) {
1408. 			 impossible("mintrap: %ss cannot exist on this level.",
1409. 				    defsyms[trap_to_defsym(tt)].explanation);
1410. 			    break;	/* don't activate it after all */
1411. 			}
1412. 			if (is_flyer(mptr) || is_floater(mptr) ||
1413. 				mptr == &mons[PM_WUMPUS] ||
1414. 				(mtmp->wormno && count_wsegs(mtmp) > 5) ||
1415. 				mptr->msize >= MZ_HUGE) {
1416. 			    if (inescapable) {	/* sokoban hole */
1417. 				if (in_sight) {
1418. 				    pline("%s seems to be yanked down!",
1419. 					  Monnam(mtmp));
1420. 				    /* suppress message in mlevel_tele_trap() */
1421. 				    in_sight = FALSE;
1422. 				    seetrap(trap);
1423. 				}
1424. 			    } else
1425. 				break;
1426. 			}
1427. 			/* Fall through */
1428. 		case LEVEL_TELEP:
1429. 		case MAGIC_PORTAL:
1430. 			{
1431. 			    int mlev_res;
1432. 			    mlev_res = mlevel_tele_trap(mtmp, trap,
1433. 							inescapable, in_sight);
1434. 			    if (mlev_res) return(mlev_res);
1435. 			}
1436. 			break;
1437. 
1438. 		case TELEP_TRAP:
1439. 			mtele_trap(mtmp, trap, in_sight);
1440. 			break;
1441. 
1442. 		case WEB:
1443. 			/* Monster in a web. */
1444. 			if (mptr->mlet == S_SPIDER) break;
1445. 			if (amorphous(mptr) || is_whirly(mptr) || unsolid(mptr)){
1446. 			    if(acidic(mptr) ||
1447. 			       mptr == &mons[PM_GELATINOUS_CUBE] ||
1448. 			       mptr == &mons[PM_FIRE_ELEMENTAL]) {
1449. 				if (in_sight)
1450. 				    pline("%s %s %s spider web!",
1451. 					  Monnam(mtmp),
1452. 					  (mptr == &mons[PM_FIRE_ELEMENTAL]) ?
1453. 					    "burns" : "dissolves",
1454. 					  a_your[trap->madeby_u]);
1455. 				deltrap(trap);
1456. 				newsym(mtmp->mx, mtmp->my);
1457. 				break;
1458. 			    }
1459. 			    if (in_sight) {
1460. 				pline("%s flows through %s spider web.",
1461. 				      Monnam(mtmp),
1462. 				      a_your[trap->madeby_u]);
1463. 				seetrap(trap);
1464. 			    }
1465. 			    break;
1466. 			}
1467. 			tear_web = FALSE;
1468. 			switch (monsndx(mptr)) {
1469. 			    case PM_OWLBEAR: /* Eric Backus */
1470. 			    case PM_BUGBEAR:
1471. 				if (!in_sight) {
1472. 				    You_hear("the roaring of a confused bear!");
1473. 				    mtmp->mtrapped = 1;
1474. 				    break;
1475. 				}
1476. 				/* fall though */
1477. 			    default:
1478. 				if (mptr->mlet == S_GIANT ||
1479. 				    (mptr->mlet == S_DRAGON &&
1480. 					extra_nasty(mptr)) || /* excl. babies */
1481. 				    (mtmp->wormno && count_wsegs(mtmp) > 5)) {
1482. 				    tear_web = TRUE;
1483. 				} else if (in_sight) {
1484. 				    pline("%s is caught in %s spider web.",
1485. 					  Monnam(mtmp),
1486. 					  a_your[trap->madeby_u]);
1487. 				    seetrap(trap);
1488. 				}
1489. 				mtmp->mtrapped = tear_web ? 0 : 1;
1490. 				break;
1491. 			    /* this list is fairly arbitrary; it deliberately
1492. 			       excludes wumpus & giant/ettin zombies/mummies */
1493. 			    case PM_TITANOTHERE:
1494. 			    case PM_BALUCHITHERIUM:
1495. 			    case PM_PURPLE_WORM:
1496. 			    case PM_JABBERWOCK:
1497. 			    case PM_IRON_GOLEM:
1498. 			    case PM_BALROG:
1499. 			    case PM_KRAKEN:
1500. 				tear_web = TRUE;
1501. 				break;
1502. 			}
1503. 			if (tear_web) {
1504. 			    if (in_sight)
1505. 				pline("%s tears through %s spider web!",
1506. 				      Monnam(mtmp), a_your[trap->madeby_u]);
1507. 			    deltrap(trap);
1508. 			    newsym(mtmp->mx, mtmp->my);
1509. 			}
1510. 			break;
1511. 
1512. 		case STATUE_TRAP:
1513. 			break;
1514. 
1515. 		case MAGIC_TRAP:
1516. 			/* A magic trap.  Monsters usually immune. */
1517. 			if (!rn2(21)) goto mfiretrap;
1518. 			break;
1519. 		case ANTI_MAGIC:
1520. 			break;
1521. 
1522. 		case LANDMINE:
1523. 			if(rn2(3))
1524. 				break; /* monsters usually don't set it off */
1525. 			if(is_flyer(mptr)) {
1526. 				boolean already_seen = trap->tseen;
1527. 				if (in_sight && !already_seen) {
1528. 	pline("A trigger appears in a pile of soil below %s.", mon_nam(mtmp));
1529. 					seetrap(trap);
1530. 				}
1531. 				if (rn2(3)) break;
1532. 				if (in_sight) {
1533. 					newsym(mtmp->mx, mtmp->my);
1534. 					pline_The("air currents set %s off!",
1535. 					  already_seen ? "a land mine" : "it");
1536. 				}
1537. 			} else if(in_sight) {
1538. 			    newsym(mtmp->mx, mtmp->my);
1539. 			    pline("KAABLAMM!!!  %s triggers %s land mine!",
1540. 				Monnam(mtmp), a_your[trap->madeby_u]);
1541. 			}
1542. 			if (!in_sight)
1543. 				pline("Kaablamm!  You hear an explosion in the distance!");
1544. 			blow_up_landmine(trap);
1545. 			if(thitm(0, mtmp, (struct obj *)0, rnd(16)))
1546. 				trapkilled = TRUE;
1547. 			else {
1548. 				/* monsters recursively fall into new pit */
1549. 				if (mintrap(mtmp) == 2) trapkilled=TRUE;
1550. 			}
1551. 			if (unconscious()) {
1552. 				multi = -1;
1553. 				nomovemsg="The explosion awakens you!";
1554. 			}
1555. 			break;
1556. 
1557. 		case POLY_TRAP:
1558. 		    if (resists_magm(mtmp)) {
1559. 			shieldeff(mtmp->mx, mtmp->my);
1560. 		    } else if (!resist(mtmp, WAND_CLASS, 0, NOTELL)) {
1561. 			(void) newcham(mtmp, (struct permonst *)0);
1562. 			if (in_sight) seetrap(trap);
1563. 		    }
1564. 		    break;
1565. 
1566. 		case ROLLING_BOULDER_TRAP:
1567. 		    if (!is_flyer(mptr)) {
1568. 		        newsym(mtmp->mx,mtmp->my);
1569. 			if (in_sight)
1570. 			  pline("Click! %s triggers %s.", Monnam(mtmp),
1571. 				  trap->tseen ?
1572. 				  "a rolling boulder trap" :
1573. 				  something);
1574. 			if (launch_obj(BOULDER, trap->launch.x, trap->launch.y,
1575. 				       trap->launch2.x, trap->launch2.y, ROLL)) {
1576. 			  if (in_sight) trap->tseen = TRUE;
1577. 			  else You_hear(Hallucination ?
1578. 					"someone bowling." :
1579. 					"rumbling in the distance.");
1580. 			  if (mtmp->mhp <= 0) trapkilled = TRUE;
1581. 			} else {
1582. 			  deltrap(trap);
1583. 			  newsym(mtmp->mx,mtmp->my);
1584. 			}
1585. 		      }
1586. 		    break;
1587. 
1588. 		default:
1589. 			impossible("Some monster encountered a strange trap of type %d.", tt);
1590. 	    }
1591. 	}
1592. 	if(trapkilled) return 2;
1593. 	return mtmp->mtrapped;
1594. }
1595. 
1596. #endif /* OVL1 */
1597. #ifdef OVLB
1598. 
1599. /* Combine cockatrice checks into single functions to avoid repeating code. */
1600. void
1601. instapetrify(str)
1602. const char *str;
1603. {
1604. 	if (Stone_resistance) return;
1605. 	if (poly_when_stoned(youmonst.data) && polymon(PM_STONE_GOLEM))
1606. 	    return;
1607. 	You("turn to stone...");
1608. 	killer_format = KILLED_BY;
1609. 	killer = str;
1610. 	done(STONING);
1611. }
1612. 
1613. void
1614. minstapetrify(mon,byplayer)
1615. struct monst *mon;
1616. boolean byplayer;
1617. {
1618. 	if (resists_ston(mon)) return;
1619. 	if (cansee(mon->mx, mon->my))
1620. 		pline("%s turns to stone.", Monnam(mon));
1621. 	if (poly_when_stoned(mon->data)) {
1622. 		mon_to_stone(mon);
1623. 		return;
1624. 	}
1625. 	if (byplayer) {
1626. 		stoned = TRUE;
1627. 		xkilled(mon,0);
1628. 	} else monstone(mon);
1629. }
1630. 
1631. void
1632. selftouch(arg)
1633. const char *arg;
1634. {
1635. 	char kbuf[BUFSZ];
1636. 
1637. 	if(uwep && uwep->otyp == CORPSE && touch_petrifies(&mons[uwep->corpsenm])
1638. 			&& !Stone_resistance) {
1639. 		pline("%s touch the %s corpse.", arg,
1640. 		        mons[uwep->corpsenm].mname);
1641. 		Sprintf(kbuf, "%s corpse", an(mons[uwep->corpsenm].mname));
1642. 		instapetrify(kbuf);
1643. 	}
1644. 	/* Or your secondary weapon, if wielded */
1645. 	if(u.twoweap && uswapwep && uswapwep->otyp == CORPSE &&
1646. 			touch_petrifies(&mons[uswapwep->corpsenm]) && !Stone_resistance){
1647. 		pline("%s touch the %s corpse.", arg,
1648. 		        mons[uswapwep->corpsenm].mname);
1649. 		Sprintf(kbuf, "%s corpse", an(mons[uswapwep->corpsenm].mname));
1650. 		instapetrify(kbuf);
1651. 	}
1652. }
1653. 
1654. void
1655. mselftouch(mon,arg,byplayer)
1656. struct monst *mon;
1657. const char *arg;
1658. boolean byplayer;
1659. {
1660. 	struct obj *mwep = MON_WEP(mon);
1661. 
1662. 	if (mwep && mwep->otyp == CORPSE && touch_petrifies(&mons[mwep->corpsenm])) {
1663. 		if (cansee(mon->mx, mon->my)) {
1664. 			pline("%s%s touches the %s corpse.",
1665. 			    arg ? arg : "", arg ? mon_nam(mon) : Monnam(mon),
1666. 			    mons[mwep->corpsenm].mname);
1667. 		}
1668. 		minstapetrify(mon, byplayer);
1669. 	}
1670. }
1671. 
1672. void
1673. float_up()
1674. {
1675. 	if(u.utrap) {
1676. 		if(u.utraptype == TT_PIT) {
1677. 			u.utrap = 0;
1678. 			You("float up, out of the pit!");
1679. 			vision_full_recalc = 1;	/* vision limits change */
1680. 			fill_pit(u.ux, u.uy);
1681. 		} else if (u.utraptype == TT_INFLOOR) {
1682. 			Your("body pulls upward, but your %s are still stuck.",
1683. 			     makeplural(body_part(LEG)));
1684. 		} else {
1685. 			You("float up, only your %s is still stuck.",
1686. 				body_part(LEG));
1687. 		}
1688. 	}
1689. 	else if(Is_waterlevel(&u.uz))
1690. 		pline("It feels as though you've lost some weight.");
1691. 	else if(u.uinwater)
1692. 		spoteffects();
1693. 	else if(u.uswallow)
1694. 		You(is_animal(u.ustuck->data) ?
1695. 			"float away from the %s."  :
1696. 			"spiral up into %s.",
1697. 		    is_animal(u.ustuck->data) ?
1698. 			surface(u.ux, u.uy) :
1699. 			mon_nam(u.ustuck));
1700. 	else if (Hallucination)
1701. 		pline("Up, up, and awaaaay!  You're walking on air!");
1702. 	else if(Is_airlevel(&u.uz))
1703. 		You("gain control over your movements.");
1704. 	else
1705. 		You("start to float in the air!");
1706. #ifdef STEED
1707. 	if (u.usteed && !is_floater(u.usteed->data) && !is_flyer(u.usteed->data))
1708. 	    if (Lev_at_will)
1709. 	    	pline("%s magically floats up!", Monnam(u.usteed));
1710. 	    else {
1711. 	    	You("cannot stay on %s.", mon_nam(u.usteed));
1712. 	    	dismount_steed(DISMOUNT_GENERIC);
1713. 	    }
1714. #endif
1715. 	return;
1716. }
1717. 
1718. void
1719. fill_pit(x, y)
1720. int x, y;
1721. {
1722. 	struct obj *otmp;
1723. 	struct trap *t;
1724. 
1725. 	if ((t = t_at(x, y)) &&
1726. 	    ((t->ttyp == PIT) || (t->ttyp == SPIKED_PIT)) &&
1727. 	    (otmp = sobj_at(BOULDER, x, y))) {
1728. 		obj_extract_self(otmp);
1729. 		(void) flooreffects(otmp, x, y, "settle");
1730. 	}
1731. }
1732. 
1733. int
1734. float_down(hmask, emask)
1735. long hmask, emask;     /* might cancel timeout */
1736. {
1737. 	register struct trap *trap = (struct trap *)0;
1738. 	d_level current_dungeon_level;
1739. 	boolean no_msg = FALSE;
1740. 
1741. 	HLevitation &= ~hmask;
1742. 	ELevitation &= ~emask;
1743. 	if(Levitation) return(0); /* maybe another ring/potion/boots */
1744. 
1745. 	if (Punished && !carried(uball) &&
1746. 	    (is_pool(uball->ox, uball->oy) ||
1747. 	     ((trap = t_at(uball->ox, uball->oy)) &&
1748. 	      ((trap->ttyp == PIT) || (trap->ttyp == SPIKED_PIT) ||
1749. 	       (trap->ttyp == TRAPDOOR) || (trap->ttyp == HOLE))))) {
1750. 			u.ux0 = u.ux;
1751. 			u.uy0 = u.uy;
1752. 			u.ux = uball->ox;
1753. 			u.uy = uball->oy;
1754. 			movobj(uchain, uball->ox, uball->oy);
1755. 			newsym(u.ux0, u.uy0);
1756. 			vision_full_recalc = 1;	/* in case the hero moved. */
1757. 	}
1758. 	/* check for falling into pool - added by GAN 10/20/86 */
1759. 	if(!Flying) {
1760. 		/* kludge alert:
1761. 		 * drown() and lava_effects() print various messages almost
1762. 		 * every time they're called which conflict with the "fall
1763. 		 * into" message below.  Thus, we want to avoid printing
1764. 		 * confusing, duplicate or out-of-order messages.
1765. 		 * Use knowledge of the two routines as a hack -- this
1766. 		 * should really handled differently -dlc
1767. 		 */
1768. 		if(is_pool(u.ux,u.uy) && !Wwalking && !Swimming && !u.uinwater)
1769. 			no_msg = drown();
1770. 
1771. 		if(is_lava(u.ux,u.uy)) {
1772. 			(void) lava_effects();
1773. 			no_msg = TRUE;
1774. 		}
1775. 	}
1776. 	if (!trap) {
1777. 		if(Is_airlevel(&u.uz))
1778. 			You("begin to tumble in place.");
1779. 		else if (Is_waterlevel(&u.uz) && !no_msg)
1780. 			You_feel("heavier.");
1781. 		/* u.uinwater msgs already in spoteffects()/drown() */
1782. 		else if (!u.uinwater && !no_msg) {
1783. 			if (Hallucination)
1784. 				pline("Bummer!  You've %s.",
1785. 				      is_pool(u.ux,u.uy) ?
1786. 					"splashed down" : "hit the ground");
1787. 			else
1788. #ifdef STEED
1789. 			if (!(emask & W_SADDLE))
1790. #endif
1791. 				You("float gently to the %s.",
1792. 				    surface(u.ux, u.uy));
1793. 		}
1794. 		trap = t_at(u.ux,u.uy);
1795. 	}
1796. 
1797. 	/* can't rely on u.uz0 for detecting trap door-induced level change;
1798. 	   it gets changed to reflect the new level before we can check it */
1799. 	assign_level(&current_dungeon_level, &u.uz);
1800. 
1801. 	if(trap)
1802. 		switch(trap->ttyp) {
1803. 		case STATUE_TRAP:
1804. 			break;
1805. 		case HOLE:
1806. 		case TRAPDOOR:
1807. 			if(!Can_fall_thru(&u.uz) || u.ustuck)
1808. 				break;
1809. 			/* fall into next case */
1810. 		default:
1811. 			dotrap(trap);
1812. 	}
1813. 
1814. 	if (!Is_airlevel(&u.uz) && !Is_waterlevel(&u.uz) && !u.uswallow &&
1815. 		/* falling through trap door calls goto_level,
1816. 		   and goto_level does its own pickup() call */
1817. 		on_level(&u.uz, &current_dungeon_level))
1818. 	    pickup(1);
1819. 	return 1;
1820. }
1821. 
1822. STATIC_OVL void
1823. dofiretrap(box)
1824. struct obj *box;	/* null for floor trap */
1825. {
1826. 	boolean see_it = !Blind;
1827. 	int num;
1828. 
1829. /* Bug: for box case, the equivalent of burn_floor_paper() ought
1830.  * to be done upon its contents.
1831.  */
1832. 
1833. 	if ((box && !carried(box)) ? is_pool(box->ox, box->oy) : Underwater) {
1834. 	    pline("A cascade of steamy bubbles erupts from %s!",
1835. 		    the(box ? xname(box) : surface(u.ux,u.uy)));
1836. 	    if (Fire_resistance) You("are uninjured.");
1837. 	    else losehp(rnd(3), "boiling water", KILLED_BY);
1838. 	    return;
1839. 	}
1840. 	pline("A %s %s from %s!", tower_of_flame,
1841. 	      box ? "bursts" : "erupts",
1842. 	      the(box ? xname(box) : surface(u.ux,u.uy)));
1843. 	if (Fire_resistance) {
1844. 	    shieldeff(u.ux, u.uy);
1845. 	    num = rn2(2);
1846. 	} else {
1847. 	    num = d(2,4);
1848. 	    if (u.uhpmax > u.ulevel)
1849. 		u.uhpmax -= rn2(min(u.uhpmax,num + 1)), flags.botl = 1;
1850. 	}
1851. 	if (!num)
1852. 	    You("are uninjured.");
1853. 	else
1854. 	    losehp(num, tower_of_flame, KILLED_BY_AN);
1855. 	burn_away_slime();
1856. 
1857. 	if (burnarmor(&youmonst) || rn2(3)) {
1858. 	    destroy_item(SCROLL_CLASS, AD_FIRE);
1859. 	    destroy_item(SPBOOK_CLASS, AD_FIRE);
1860. 	    destroy_item(POTION_CLASS, AD_FIRE);
1861. 	}
1862. 	if (!box && burn_floor_paper(u.ux, u.uy, see_it) && !see_it)
1863. 	    You("smell paper burning.");
1864. 	if (is_ice(u.ux, u.uy))
1865. 	    melt_ice(u.ux, u.uy);
1866. }
1867. 
1868. STATIC_OVL void
1869. domagictrap()
1870. {
1871. 	register int fate = rnd(20);
1872. 
1873. 	/* What happened to the poor sucker? */
1874. 
1875. 	if (fate < 10) {
1876. 	  /* Most of the time, it creates some monsters. */
1877. 	  register int cnt = rnd(4);
1878. 
1879. 	  if (!resists_blnd(&youmonst)) {
1880. 		You("are momentarily blinded by a flash of light!");
1881. 		make_blinded((long)rn1(5,10),FALSE);
1882. 	  } else if (!Blind) {
1883. 		You("see a flash of light!");
1884. 	  }  else
1885. 		You_hear("a deafening roar!");
1886. 	  while(cnt--)
1887. 		(void) makemon((struct permonst *) 0, u.ux, u.uy, NO_MM_FLAGS);
1888. 	}
1889. 	else
1890. 	  switch (fate) {
1891. 
1892. 	     case 10:
1893. 	     case 11:
1894. 		      /* sometimes nothing happens */
1895. 			break;
1896. 	     case 12: /* a flash of fire */
1897. 			dofiretrap((struct obj *)0);
1898. 			break;
1899. 
1900. 	     /* odd feelings */
1901. 	     case 13:	pline("A shiver runs up and down your %s!",
1902. 			      body_part(SPINE));
1903. 			break;
1904. 	     case 14:	You_hear(Hallucination ?
1905. 				"the moon howling at you." :
1906. 				"distant howling.");
1907. 			break;
1908. 	     case 15:	if (on_level(&u.uz, &qstart_level))
1909. 			    You_feel("%slike the prodigal son.",
1910. 			      (flags.female || (Upolyd && is_neuter(youmonst.data))) ?
1911. 				     "oddly " : "");
1912. 			else
1913. 			    You("suddenly yearn for %s.",
1914. 				Hallucination ? "Cleveland" :
1915. 			    (In_quest(&u.uz) || at_dgn_entrance("The Quest")) ?
1916. 						"your nearby homeland" :
1917. 						"your distant homeland");
1918. 			break;
1919. 	     case 16:   Your("pack shakes violently!");
1920. 			break;
1921. 	     case 17:	You(Hallucination ?
1922. 				"smell hamburgers." :
1923. 				"smell charred flesh.");
1924. 			break;
1925. 	     case 18:	You_feel("tired.");
1926. 			break;
1927. 
1928. 	     /* very occasionally something nice happens. */
1929. 
1930. 	     case 19:
1931. 		    /* tame nearby monsters */
1932. 		   {   register int i,j;
1933. 		       register struct monst *mtmp;
1934. 
1935. 		       (void) adjattrib(A_CHA,1,FALSE);
1936. 		       for(i = -1; i <= 1; i++) for(j = -1; j <= 1; j++) {
1937. 			   if(!isok(u.ux+i, u.uy+j)) continue;
1938. 			   mtmp = m_at(u.ux+i, u.uy+j);
1939. 			   if(mtmp)
1940. 			       (void) tamedog(mtmp, (struct obj *)0);
1941. 		       }
1942. 		       break;
1943. 		   }
1944. 
1945. 	     case 20:
1946. 		    /* uncurse stuff */
1947. 		   {  register struct obj *obj;
1948. 
1949. 			/* below plines added by GAN 10/30/86 */
1950. 			You_feel(Hallucination ?
1951. 				"in touch with the Universal Oneness." :
1952. 				"like someone is helping you.");
1953. 			for(obj = invent; obj ; obj = obj->nobj)
1954. 			       if(obj->owornmask || obj->otyp == LOADSTONE)
1955. 					uncurse(obj);
1956. 		       if(Punished) unpunish();
1957. 		       break;
1958. 		   }
1959. 	     default: break;
1960. 	  }
1961. }
1962. 
1963. void
1964. water_damage(obj, force, here)
1965. register struct obj *obj;
1966. register boolean force, here;
1967. {
1968. 	/* Scrolls, spellbooks, potions, weapons and
1969. 	   pieces of armor may get affected by the water */
1970. 	for (; obj; obj = (here ? obj->nexthere : obj->nobj)) {
1971. 
1972. 		(void) snuff_lit(obj);
1973. 
1974. 		if(obj->greased) {
1975. 			if (force || !rn2(2)) obj->greased = 0;
1976. 		} else if(Is_container(obj) && !Is_box(obj) &&
1977. 			(obj->otyp != OILSKIN_SACK || (obj->cursed && !rn2(3)))) {
1978. 			water_damage(obj->cobj, force, FALSE);
1979. 		} else if (!force && (Luck + 5) > rn2(20)) {
1980. 			/*  chance per item of sustaining damage:
1981. 			 *	max luck (full moon):	 5%
1982. 			 *	max luck (elsewhen):	10%
1983. 			 *	avg luck (Luck==0):	75%
1984. 			 *	awful luck (Luck<-4):  100%
1985. 			 */
1986. 			continue;
1987. 		} else if (obj->oclass == SCROLL_CLASS) {
1988. #ifdef MAIL
1989. 		    if (obj->otyp != SCR_MAIL)
1990. #endif
1991. 			obj->otyp = SCR_BLANK_PAPER;
1992. 			obj->spe = 0;
1993. 		} else if (obj->oclass == SPBOOK_CLASS) {
1994. 			if (obj->otyp == SPE_BOOK_OF_THE_DEAD)
1995. 				pline("Steam rises from %s.", the(xname(obj)));
1996. 			else obj->otyp = SPE_BLANK_PAPER;
1997. 		} else if (obj->oclass == POTION_CLASS) {
1998. 			if (obj->odiluted) {
1999. 				obj->otyp = POT_WATER;
2000. 				obj->blessed = obj->cursed = 0;
2001. 				obj->odiluted = 0;
2002. 			} else if (obj->otyp != POT_WATER)
2003. 				obj->odiluted++;
2004. 		} else if (is_rustprone(obj) && obj->oeroded < MAX_ERODE &&
2005. 			  !(obj->oerodeproof || (obj->blessed && !rnl(4)))) {
2006. 			/* all metal stuff and armor except (body armor
2007. 			   protected by oilskin cloak) */
2008. 			if(obj->oclass != ARMOR_CLASS || obj != uarm ||
2009. 			   !uarmc || uarmc->otyp != OILSKIN_CLOAK ||
2010. 			   (uarmc->cursed && !rn2(3)))
2011. 				obj->oeroded++;
2012. 		}
2013. 	}
2014. }
2015. 
2016. /*
2017.  * This function is potentially expensive - rolling
2018.  * inventory list multiple times.  Luckily it's seldom needed.
2019.  * Returns TRUE if disrobing made player unencumbered enough to
2020.  * crawl out of the current predicament.
2021.  */
2022. STATIC_OVL boolean
2023. emergency_disrobe(lostsome)
2024. boolean *lostsome;
2025. {
2026. 	int invc = inv_cnt();
2027. 
2028. 
2029. 	while (near_capacity() > (Punished ? UNENCUMBERED : SLT_ENCUMBER)) {
2030. 		register struct obj *obj, *otmp = (struct obj *)0;
2031. 		register int i;
2032. 
2033. 		/* Pick a random object */
2034. 		if (invc > 0) {
2035. 			i = rn2(invc);
2036. 		for (obj = invent; obj; obj = obj->nobj) {
2037. 			/*
2038. 			 * Undroppables are: body armor, boots, gloves,
2039. 			 * amulets, and rings because of the time and effort
2040. 			 * in removing them + loadstone and other cursed stuff
2041. 			 * for obvious reasons.
2042. 			 */
2043. 			if (!((obj->otyp == LOADSTONE && obj->cursed) ||
2044. 			      obj == uamul || obj == uleft || obj == uright ||
2045. 			      obj == ublindf || obj == uarm || obj == uarmc ||
2046. 			      obj == uarmg || obj == uarmf ||
2047. #ifdef TOURIST
2048. 			      obj == uarmu ||
2049. #endif
2050. 			      (obj->cursed && (obj == uarmh || obj == uarms)) ||
2051. 			      welded(obj)))
2052. 				otmp = obj;
2053. 			/* reached the mark and found some stuff to drop? */
2054. 			if (--i < 0 && otmp) break;
2055. 
2056. 			/* else continue */
2057. 		}
2058. 		}
2059. 
2060. 		if (!otmp) {
2061. 			/* Nothing available left to drop; try gold */
2062. 			if (u.ugold) {
2063. 				pline("In desperation, you drop your purse.");
2064. 				/* Hack: gold is not in the inventory, so make a gold object
2065. 				 * and put it at the head of the inventory list.
2066. 				 */
2067. 				obj = mkgoldobj(u.ugold);    /* removes from u.ugold */
2068. 				u.ugold = obj->quan;         /* put the gold back */
2069. 				assigninvlet(obj);           /* might end up as NOINVSYM */
2070. 				obj->nobj = invent;
2071. 				invent = obj;
2072. 				dropx(obj);
2073. 				continue;                    /* Try again */
2074. 			}
2075. 			/* We can't even drop gold! */
2076. 			return (FALSE);
2077. 		}
2078. 
2079. 		if (otmp == uarmh) (void) Helmet_off();
2080. 		else if (otmp == uarms) (void) Shield_off();
2081. 		else if (otmp == uwep) setuwep((struct obj *)0);
2082. 		*lostsome = TRUE;
2083. 		dropx(otmp);
2084. 		invc--;
2085. 	}
2086. 	return(TRUE);
2087. }
2088. 
2089. /*
2090.  *  return(TRUE) == player relocated
2091.  */
2092. boolean
2093. drown()
2094. {
2095. 	boolean inpool_ok = FALSE, crawl_ok;
2096. 	int i, x, y;
2097. 
2098. 	/* happily wading in the same contiguous pool */
2099. 	if (u.uinwater && is_pool(u.ux-u.dx,u.uy-u.dy) &&
2100. 	    (Swimming || Amphibious)) {
2101. 		/* water effects on objects every now and then */
2102. 		if (!rn2(5)) inpool_ok = TRUE;
2103. 		else return(FALSE);
2104. 	}
2105. 
2106. 	if (!u.uinwater) {
2107. 	    You("%s into the water%c",
2108. 		Is_waterlevel(&u.uz) ? "plunge" : "fall",
2109. 		Amphibious || Swimming ? '.' : '!');
2110. 	    if (!Swimming && !Is_waterlevel(&u.uz))
2111. 		    You("sink like %s.",
2112. 			Hallucination ? "the Titanic" : "a rock");
2113. 	}
2114. 
2115. 	water_damage(invent, FALSE, FALSE);
2116. 
2117. 	if (u.umonnum == PM_GREMLIN && rn2(3))
2118. 	    (void)split_mon(&youmonst, (struct monst *)0);
2119. 	if (inpool_ok) return(FALSE);
2120. 
2121. 	if ((i = number_leashed()) > 0) {
2122. 		pline_The("leash%s slip%s loose.",
2123. 			(i > 1) ? "es" : "",
2124. 			(i > 1) ? "" : "s");
2125. 		unleash_all();
2126. 	}
2127. 
2128. 	if (Amphibious || Swimming) {
2129. 		if (Amphibious) {
2130. 			if (flags.verbose)
2131. 				pline("But you aren't drowning.");
2132. 			if (!Is_waterlevel(&u.uz))
2133. 				if (Hallucination)
2134. 					Your("keel hits the bottom.");
2135. 				else
2136. 					You("touch bottom.");
2137. 		}
2138. 		if (Punished) {
2139. 			unplacebc();
2140. 			placebc();
2141. 		}
2142. 		vision_recalc(2);	/* unsee old position */
2143. 		u.uinwater = 1;
2144. 		under_water(1);
2145. 		vision_full_recalc = 1;
2146. 		return(FALSE);
2147. 	}
2148. 	if((Teleportation || can_teleport(youmonst.data)) &&
2149. 	   (Teleport_control || rn2(3) < Luck+2)) {
2150. 		You("attempt a teleport spell.");	/* utcsri!carroll */
2151. 		(void) dotele();
2152. 		if(!is_pool(u.ux,u.uy))
2153. 			return(TRUE);
2154. 	}
2155. #ifdef STEED
2156. 	if (u.usteed) {
2157. 		dismount_steed(DISMOUNT_GENERIC);
2158. 		if(!is_pool(u.ux,u.uy))
2159. 			return(TRUE);
2160. 	}
2161. #endif
2162. 	crawl_ok = FALSE;
2163. 	/* look around for a place to crawl to */
2164. 	for (i = 0; i < 100; i++) {
2165. 		x = rn1(3,u.ux - 1);
2166. 		y = rn1(3,u.uy - 1);
2167. 		if (goodpos(x, y, &youmonst)) {
2168. 			crawl_ok = TRUE;
2169. 			goto crawl;
2170. 		}
2171. 	}
2172. 	/* one more scan */
2173. 	for (x = u.ux - 1; x <= u.ux + 1; x++)
2174. 		for (y = u.uy - 1; y <= u.uy + 1; y++)
2175. 			if (goodpos(x, y, &youmonst)) {
2176. 				crawl_ok = TRUE;
2177. 				goto crawl;
2178. 			}
2179. crawl:;
2180. 	if (crawl_ok) {
2181. 		boolean lost = FALSE;
2182. 		/* time to do some strip-tease... */
2183. 		boolean succ = Is_waterlevel(&u.uz) ? TRUE :
2184. 				emergency_disrobe(&lost);
2185. 
2186. 		You("try to crawl out of the water.");
2187. 		if (lost)
2188. 			You("dump some of your gear to lose weight...");
2189. 		if (succ) {
2190. 			pline("Pheew!  That was close.");
2191. 			teleds(x,y);
2192. 			return(TRUE);
2193. 		}
2194. 		/* still too much weight */
2195. 		pline("But in vain.");
2196. 	}
2197. 	u.uinwater = 1;
2198. 	You("drown.");
2199. 	killer_format = KILLED_BY_AN;
2200. 	killer = (levl[u.ux][u.uy].typ == POOL || Is_medusa_level(&u.uz)) ?
2201. 	    "pool of water" : "moat";
2202. 	done(DROWNING);
2203. 	/* oops, we're still alive.  better get out of the water. */
2204. 	while (!safe_teleds()) {
2205. 		pline("You're still drowning.");
2206. 		done(DROWNING);
2207. 	}
2208. 	u.uinwater = 0;
2209. 	You("find yourself back %s.", Is_waterlevel(&u.uz) ?
2210. 		"in an air bubble" : "on land");
2211. 	return(TRUE);
2212. }
2213. 
2214. void
2215. drain_en(n)
2216. register int n;
2217. {
2218. 	if (!u.uenmax) return;
2219. 	You_feel("your magical energy drain away!");
2220. 	u.uen -= n;
2221. 	if(u.uen < 0)  {
2222. 		u.uenmax += u.uen;
2223. 		if(u.uenmax < 0) u.uenmax = 0;
2224. 		u.uen = 0;
2225. 	}
2226. 	flags.botl = 1;
2227. }
2228. 
2229. int
2230. dountrap()	/* disarm a trap */
2231. {
2232. 	if (near_capacity() >= HVY_ENCUMBER) {
2233. 	    pline("You're too strained to do that.");
2234. 	    return 0;
2235. 	}
2236. 	if (nohands(youmonst.data) || !youmonst.data->mmove) {
2237. 	    pline("And just how do you expect to do that?");
2238. 	    return 0;
2239. 	} else if (u.ustuck && sticks(youmonst.data)) {
2240. 	    pline("You'll have to let go of %s first.", mon_nam(u.ustuck));
2241. 	    return 0;
2242. 	}
2243. 	if (u.ustuck || (welded(uwep) && bimanual(uwep))) {
2244. 	    Your("%s seem to be too busy for that.",
2245. 		 makeplural(body_part(HAND)));
2246. 	    return 0;
2247. 	}
2248. 	return untrap(FALSE);
2249. }
2250. #endif /* OVLB */
2251. #ifdef OVL2
2252. 
2253. /* Probability of disabling a trap.  Helge Hafting */
2254. STATIC_OVL int
2255. untrap_prob(ttmp)
2256. struct trap *ttmp;
2257. {
2258. 	int chance = 3;
2259. 
2260. 	if (Confusion || Hallucination) chance++;
2261. 	if (Blind) chance++;
2262. 	if (Stunned) chance += 2;
2263. 	if (Fumbling) chance *= 2;
2264. 	/* Your own traps are better known than others. */
2265. 	if (ttmp && ttmp->madeby_u) chance--;
2266. 	if (Role_if(PM_ROGUE)) {
2267. 	    if (rn2(2 * MAXULEV) < u.ulevel) chance--;
2268. 	    if (u.uhave.questart && chance > 1) chance--;
2269. 	} else if (Role_if(PM_RANGER)) chance--;
2270. 	return rn2(chance);
2271. }
2272. 
2273. /* Replace trap with object(s).  Helge Hafting */
2274. STATIC_OVL void
2275. cnv_trap_obj(otyp, cnt, ttmp)
2276. int otyp;
2277. int cnt;
2278. struct trap *ttmp;
2279. {
2280. 	struct obj *otmp = mksobj(otyp, TRUE, FALSE);
2281. 	otmp->quan=cnt;
2282. 	otmp->owt = weight(otmp);
2283. 	place_object(otmp, ttmp->tx, ttmp->ty);
2284. 	/* Sell your own traps only... */
2285. 	if (ttmp->madeby_u) sellobj(otmp, ttmp->tx, ttmp->ty);
2286. 	stackobj(otmp);
2287. 	newsym(ttmp->tx, ttmp->ty);
2288. 	deltrap(ttmp);
2289. }
2290. 
2291. /* while attempting to disarm an adjacent trap, we've fallen into it */
2292. STATIC_OVL void
2293. move_into_trap(ttmp)
2294. struct trap *ttmp;
2295. {
2296. 	int bc;
2297. 	xchar x = ttmp->tx, y = ttmp->ty, bx, by, cx, cy;
2298. 	boolean unused;
2299. 
2300. 	/* we know there's no monster in the way, and we're not trapped */
2301. 	if (!Punished || drag_ball(x, y, &bc, &bx, &by, &cx, &cy, &unused)) {
2302. 	    u.ux0 = u.ux,  u.uy0 = u.uy;
2303. 	    u.ux = x,  u.uy = y;
2304. 	    u.umoved = TRUE;
2305. 	    newsym(u.ux0, u.uy0);
2306. 	    vision_recalc(1);
2307. 	    check_leash(u.ux0, u.uy0);
2308. 	    if (Punished) move_bc(0, bc, bx, by, cx, cy);
2309. 	    spoteffects();	/* dotrap() */
2310. 	    exercise(A_WIS, FALSE);
2311. 	}
2312. }
2313. 
2314. /* 0: doesn't even try
2315.  * 1: tries and fails
2316.  * 2: succeeds
2317.  */
2318. STATIC_OVL int
2319. try_disarm(ttmp, force_failure)
2320. struct trap *ttmp;
2321. boolean force_failure;
2322. {
2323. 	struct monst *mtmp = m_at(ttmp->tx,ttmp->ty);
2324. 	int ttype = ttmp->ttyp;
2325. 	boolean under_u = (!u.dx && !u.dy);
2326. 
2327. 	/* Test for monster first, monsters are displayed instead of trap. */
2328. 	if (mtmp && (!mtmp->mtrapped || ttype != BEAR_TRAP)) {
2329. 		pline("%s is in the way.", Monnam(mtmp));
2330. 		return 0;
2331. 	}
2332. 	/* We might be forced to move onto the trap's location. */
2333. 	if (sobj_at(BOULDER, ttmp->tx, ttmp->ty)
2334. 				&& !Passes_walls && !under_u) {
2335. 		pline("There is a boulder in your way.");
2336. 		return 0;
2337. 	}
2338. 	/* untrappable traps are located on the ground. */
2339. 	if (!can_reach_floor()) {
2340. #ifdef STEED
2341. 		if (u.usteed && P_SKILL(P_RIDING) < P_BASIC)
2342. 			You("aren't skilled enough to reach from %s.",
2343. 				mon_nam(u.usteed));
2344. 		else
2345. #endif
2346. 		You("are unable to reach the %s!",
2347. 			defsyms[trap_to_defsym(ttype)].explanation);
2348. 		return 0;
2349. 	}
2350. 
2351. 	/* Will our hero succeed? */
2352. 	if (force_failure || untrap_prob(ttmp)) {
2353. 		if (rnl(5)) {
2354. 		    pline("Whoops...");
2355. 		    if (mtmp) {		/* must be a bear trap */
2356. 			if (mtmp->mtame) abuse_dog(mtmp);
2357. 			if ((mtmp->mhp -= rnd(4)) <= 0) killed(mtmp);
2358. 		    } else if (under_u) {
2359. 			dotrap(ttmp);
2360. 		    } else {
2361. 			move_into_trap(ttmp);
2362. 		    }
2363. 		} else {
2364. 		    pline("%s %s is difficult to disarm.",
2365. 			  ttmp->madeby_u ? "Your" : under_u ? "This" : "That",
2366. 			  defsyms[trap_to_defsym(ttype)].explanation);
2367. 		}
2368. 		return 1;
2369. 	}
2370. 	return 2;
2371. }
2372. 
2373. STATIC_OVL void
2374. reward_untrap(ttmp, mtmp)
2375. struct trap *ttmp;
2376. struct monst *mtmp;
2377. {
2378. 	if (!ttmp->madeby_u) {
2379. 		if (rnl(10)<8 && !mtmp->mpeaceful &&
2380. 						mtmp->data->mlet != S_HUMAN) {
2381. 			mtmp->mpeaceful = 1;
2382. 			set_malign(mtmp);	/* reset alignment */
2383. 			pline("%s is grateful.", Monnam(mtmp));
2384. 		}
2385. 		/* Helping someone out of a trap is a nice thing to do,
2386. 		 * A lawful may be rewarded, but not too often.  */
2387. 		if (!rn2(3) && !rnl(8) && u.ualign.type == A_LAWFUL) {
2388. 			adjalign(1);
2389. 			You_feel("that you did the right thing.");
2390. 		}
2391. 	}
2392. }
2393. 
2394. STATIC_OVL int
2395. disarm_beartrap(ttmp) /* Helge Hafting */
2396. struct trap *ttmp;
2397. {
2398. 	struct monst *mtmp;
2399. 	int fails = try_disarm(ttmp, FALSE);
2400. 
2401. 	if (fails < 2) return fails;
2402. 
2403. 	/* ok, disarm it. */
2404. 
2405. 	/* untrap the monster, if any.
2406. 	   There's no need for a cockatrice test, only the trap is touched */
2407. 	if ((mtmp = m_at(ttmp->tx,ttmp->ty)) != 0) {
2408. 		mtmp->mtrapped = 0;
2409. 		You("remove %s bear trap from %s.", the_your[ttmp->madeby_u],
2410. 			mon_nam(mtmp));
2411. 		reward_untrap(ttmp, mtmp);
2412. 	} else You("disarm %s bear trap.", the_your[ttmp->madeby_u]);
2413. 	cnv_trap_obj(BEARTRAP, 1, ttmp);
2414. 	return 1;
2415. }
2416. 
2417. STATIC_OVL int
2418. disarm_landmine(ttmp) /* Helge Hafting */
2419. struct trap *ttmp;
2420. {
2421. 	int fails = try_disarm(ttmp, FALSE);
2422. 
2423. 	if (fails < 2) return fails;
2424. 	You("disarm %s land mine.", the_your[ttmp->madeby_u]);
2425. 	cnv_trap_obj(LAND_MINE, 1, ttmp);
2426. 	return 1;
2427. }
2428. 
2429. /* getobj will filter down to cans of grease and known potions of oil */
2430. static NEARDATA const char oil[] = { ALL_CLASSES, TOOL_CLASS, POTION_CLASS, 0 };
2431. 
2432. /* it may not make much sense to use grease on floor boards, but so what? */
2433. STATIC_OVL int
2434. disarm_squeaky_board(ttmp)
2435. struct trap *ttmp;
2436. {
2437. 	struct obj *obj;
2438. 	boolean bad_tool;
2439. 	int fails;
2440. 
2441. 	obj = getobj(oil, "untrap with");
2442. 	if (!obj) return 0;
2443. 
2444. 	bad_tool = (obj->cursed ||
2445. 			((obj->otyp != POT_OIL || obj->lamplit) &&
2446. 			 (obj->otyp != CAN_OF_GREASE || !obj->spe)));
2447. 
2448. 	fails = try_disarm(ttmp, bad_tool);
2449. 	if (fails < 2) return fails;
2450. 
2451. 	/* successfully used oil or grease to fix squeaky board */
2452. 	if (obj->otyp == CAN_OF_GREASE) {
2453. 	    check_unpaid(obj);
2454. 	    obj->spe--;
2455. 	} else {
2456. 	    useup(obj);	/* oil */
2457. 	    makeknown(POT_OIL);
2458. 	}
2459. 	You("repair the squeaky board.");	/* no madeby_u */
2460. 	deltrap(ttmp);
2461. 	newsym(u.ux + u.dx, u.uy + u.dy);
2462. 	more_experienced(1, 5);
2463. 	return 1;
2464. }
2465. 
2466. /* removes traps that shoot arrows, darts, etc. */
2467. STATIC_OVL int
2468. disarm_shooting_trap(ttmp, otyp)
2469. struct trap *ttmp;
2470. int otyp;
2471. {
2472. 	int fails = try_disarm(ttmp, FALSE);
2473. 
2474. 	if (fails < 2) return fails;
2475. 	You("disarm %s trap.", the_your[ttmp->madeby_u]);
2476. 	cnv_trap_obj(otyp, 50-rnl(50), ttmp);
2477. 	return 1;
2478. }
2479. 
2480. /* Is the weight too heavy?
2481.  * Formula as in near_capacity() & check_capacity() */
2482. STATIC_OVL int
2483. try_lift(mtmp, ttmp, wt, stuff)
2484. struct monst *mtmp;
2485. struct trap *ttmp;
2486. int wt;
2487. boolean stuff;
2488. {
2489. 	int wc = weight_cap();
2490. 
2491. 	if ((((wt<<1) / wc)+1) >= EXT_ENCUMBER) {
2492. 		pline("%s is %s for you to lift.", Monnam(mtmp),
2493. 			stuff ? "carrying too much" : "too heavy");
2494. 		if (!ttmp->madeby_u && !mtmp->mpeaceful
2495. 			&& mtmp->data->mlet != S_HUMAN && rnl(10) < 3) {
2496. 		    mtmp->mpeaceful = 1;
2497. 		    set_malign(mtmp);		/* reset alignment */
2498. 		    pline("%s thinks it was nice of you to try.", Monnam(mtmp));
2499. 		}
2500. 		return 0;
2501. 	}
2502. 	return 1;
2503. }
2504. 
2505. /* Help trapped monster (out of a (spiked) pit) */
2506. STATIC_OVL int
2507. help_monster_out(mtmp, ttmp)
2508. struct monst *mtmp;
2509. struct trap *ttmp;
2510. {
2511. 	int wt;
2512. 	struct obj *otmp;
2513. 
2514. 	/*
2515. 	 * This works when levitating too -- consistent with the ability
2516. 	 * to hit monsters while levitating.
2517. 	 *
2518. 	 * Should perhaps check that our hero has arms/hands at the
2519. 	 * moment.  Helping can also be done by engulfing...
2520. 	 *
2521. 	 * Test the monster first - monsters are displayed before traps.
2522. 	 */
2523. 	if (!mtmp->mtrapped) {
2524. 		pline("%s isn't trapped.", Monnam(mtmp));
2525. 		return 0;
2526. 	}
2527. 	/* Do you have the necessary capacity to lift anything? */
2528. 	if (check_capacity((char *)0)) return 1;
2529. 
2530. 	/* Will our hero succeed? */
2531. 	if (untrap_prob(ttmp)) {
2532. 		You("try to reach out your %s, but %s backs away skeptically.",
2533. 			makeplural(body_part(ARM)),
2534. 			mon_nam(mtmp));
2535. 		return 1;
2536. 	}
2537. 
2538. 
2539. 	/* is it a cockatrice?... */
2540. 	if (touch_petrifies(mtmp->data) && !uarmg && !Stone_resistance) {
2541. 		You("grab the trapped %s using your bare %s.",
2542. 				mtmp->data->mname, makeplural(body_part(HAND)));
2543. 
2544. 		if (poly_when_stoned(youmonst.data) && polymon(PM_STONE_GOLEM))
2545. 			display_nhwindow(WIN_MESSAGE, FALSE);
2546. 		else {
2547. 			char kbuf[BUFSZ];
2548. 
2549. 			Sprintf(kbuf, "trying to help %s out of a pit",
2550. 					an(mtmp->data->mname));
2551. 			instapetrify(kbuf);
2552. 			return 1;
2553. 		}
2554. 	}
2555. 	You("reach out your %s and grab %s.",
2556. 	    makeplural(body_part(ARM)), mon_nam(mtmp));
2557. 
2558. 	/* is the monster too heavy? */
2559. 	wt = inv_weight() + mtmp->data->cwt;
2560. 	if (!try_lift(mtmp, ttmp, wt, FALSE)) return 1;
2561. 
2562. 	/* is the monster with inventory too heavy? */
2563. 	for (otmp = mtmp->minvent; otmp; otmp = otmp->nobj)
2564. 		wt += otmp->owt;
2565. 	if (!try_lift(mtmp, ttmp, wt, TRUE)) return 1;
2566. 
2567. 	You("pull %s out of the pit.", mon_nam(mtmp));
2568. 	mtmp->mtrapped = 0;
2569. 	fill_pit(mtmp->mx, mtmp->my);
2570. 	reward_untrap(ttmp, mtmp);
2571. 	return 1;
2572. }
2573. 
2574. int
2575. untrap(force)
2576. boolean force;
2577. {
2578. 	register struct obj *otmp;
2579. 	register boolean confused = (Confusion > 0 || Hallucination > 0);
2580. 	register int x,y;
2581. 	int ch;
2582. 	struct trap *ttmp;
2583. 	struct monst *mtmp;
2584. 	boolean trap_skipped = FALSE;
2585. 
2586. 	if(!getdir((char *)0)) return(0);
2587. 	x = u.ux + u.dx;
2588. 	y = u.uy + u.dy;
2589. 
2590. 	if ((ttmp = t_at(x,y)) && ttmp->tseen) {
2591. 		if (u.utrap) {
2592. 			You("cannot deal with traps while trapped!");
2593. 			return 1;
2594. 		}
2595. 		switch(ttmp->ttyp) {
2596. 			case BEAR_TRAP:
2597. 				return disarm_beartrap(ttmp);
2598. 			case LANDMINE:
2599. 				return disarm_landmine(ttmp);
2600. 			case SQKY_BOARD:
2601. 				return disarm_squeaky_board(ttmp);
2602. 			case DART_TRAP:
2603. 				return disarm_shooting_trap(ttmp, DART);
2604. 			case ARROW_TRAP:
2605. 				return disarm_shooting_trap(ttmp, ARROW);
2606. 			case PIT:
2607. 			case SPIKED_PIT:
2608. 				if (!u.dx && !u.dy) {
2609. 				    You("are already on the edge of the pit.");
2610. 				    return 0;
2611. 				}
2612. 				if (!(mtmp = m_at(x,y))) {
2613. 				    pline("Try filling the pit instead.");
2614. 				    return 0;
2615. 				}
2616. 				return help_monster_out(mtmp, ttmp);
2617. 			default:
2618. 				You("cannot disable %s trap.", (u.dx || u.dy) ? "that" : "this");
2619. 				return 0;
2620. 		} /* end switch */
2621. 	} /* end if */
2622. 
2623. 	if(!u.dx && !u.dy) {
2624. 	    for(otmp = level.objects[x][y]; otmp; otmp = otmp->nexthere)
2625. 		if(Is_box(otmp)) {
2626. 		    pline("There is %s here.", doname(otmp));
2627. 
2628. 		    switch (ynq("Check for traps?")) {
2629. 			case 'q': return(0);
2630. 			case 'n': continue;
2631. 		    }
2632. 
2633. 		    if((otmp->otrapped && (force || (!confused
2634. 				&& rn2(MAXULEV + 1 - u.ulevel) < 10)))
2635. 		       || (!force && confused && !rn2(3))) {
2636. 			You("find a trap on %s!", the(xname(otmp)));
2637. 			exercise(A_WIS, TRUE);
2638. 
2639. 			switch (ynq("Disarm it?")) {
2640. 			    case 'q': return(1);
2641. 			    case 'n': trap_skipped = TRUE;  continue;
2642. 			}
2643. 
2644. 			if(otmp->otrapped) {
2645. 			    exercise(A_DEX, TRUE);
2646. 			    ch = ACURR(A_DEX) + u.ulevel;
2647. 			    if (Role_if(PM_ROGUE)) ch *= 2;
2648. 			    if(!force && (confused || Fumbling ||
2649. 				rnd(75+level_difficulty()/2) > ch)) {
2650. 				(void) chest_trap(otmp, FINGER, TRUE);
2651. 			    } else {
2652. 				You("disarm it!");
2653. 				otmp->otrapped = 0;
2654. 			    }
2655. 			} else pline("That %s was not trapped.", xname(otmp));
2656. 			return(1);
2657. 		    } else {
2658. 			You("find no traps on %s.", the(xname(otmp)));
2659. 			return(1);
2660. 		    }
2661. 		}
2662. 
2663. 	    You(trap_skipped ? "find no other traps here."
2664. 			     : "know of no traps here.");
2665. 	    return(0);
2666. 	}
2667. 
2668. 	if ((mtmp = m_at(x,y))				&&
2669. 		mtmp->m_ap_type == M_AP_FURNITURE	&&
2670. 		(mtmp->mappearance == S_hcdoor ||
2671. 			mtmp->mappearance == S_vcdoor)	&&
2672. 		!Protection_from_shape_changers)	 {
2673. 
2674. 	    stumble_onto_mimic(mtmp);
2675. 	    return(1);
2676. 	}
2677. 
2678. 	if (!IS_DOOR(levl[x][y].typ)) {
2679. 	    if ((ttmp = t_at(x,y)) && ttmp->tseen)
2680. 		You("cannot disable that trap.");
2681. 	    else
2682. 		You("know of no traps there.");
2683. 	    return(0);
2684. 	}
2685. 
2686. 	switch (levl[x][y].doormask) {
2687. 	    case D_NODOOR:
2688. 		You("%s no door there.", Blind ? "feel" : "see");
2689. 		return(0);
2690. 	    case D_ISOPEN:
2691. 		pline("This door is safely open.");
2692. 		return(0);
2693. 	    case D_BROKEN:
2694. 		pline("This door is broken.");
2695. 		return(0);
2696. 	}
2697. 
2698. 	if ((levl[x][y].doormask & D_TRAPPED
2699. 	     && (force ||
2700. 		 (!confused && rn2(MAXULEV - u.ulevel + 11) < 10)))
2701. 	    || (!force && confused && !rn2(3))) {
2702. 		You("find a trap on the door!");
2703. 		exercise(A_WIS, TRUE);
2704. 		if (ynq("Disarm it?") != 'y') return(1);
2705. 		if (levl[x][y].doormask & D_TRAPPED) {
2706. 		    ch = 15 + (Role_if(PM_ROGUE) ? u.ulevel*3 : u.ulevel);
2707. 		    exercise(A_DEX, TRUE);
2708. 		    if(!force && (confused || Fumbling ||
2709. 				     rnd(75+level_difficulty()/2) > ch)) {
2710. 			You("set it off!");
2711. 			b_trapped("door", FINGER);
2712. 			levl[x][y].doormask = D_NODOOR;
2713. 			unblock_point(x, y);
2714. 			newsym(x, y);
2715. 			/* (probably ought to charge for this damage...) */
2716. 			if (*in_rooms(x, y, SHOPBASE)) add_damage(x, y, 0L);
2717. 		    } else {
2718. 			You("disarm it!");
2719. 			levl[x][y].doormask &= ~D_TRAPPED;
2720. 		    }
2721. 		} else pline("This door was not trapped.");
2722. 		return(1);
2723. 	} else {
2724. 		You("find no traps on the door.");
2725. 		return(1);
2726. 	}
2727. }
2728. #endif /* OVL2 */
2729. #ifdef OVLB
2730. 
2731. /* only called when the player is doing something to the chest directly */
2732. boolean
2733. chest_trap(obj, bodypart, disarm)
2734. register struct obj *obj;
2735. register int bodypart;
2736. boolean disarm;
2737. {
2738. 	register struct obj *otmp = obj, *otmp2;
2739. 	char	buf[80];
2740. 	const char *msg;
2741. 	coord cc;
2742. 
2743. 	if (get_obj_location(obj, &cc.x, &cc.y, 0))	/* might be carried */
2744. 	    obj->ox = cc.x,  obj->oy = cc.y;
2745. 
2746. 	otmp->otrapped = 0;	/* trap is one-shot; clear flag first in case
2747. 				   chest kills you and ends up in bones file */
2748. 	You(disarm ? "set it off!" : "trigger a trap!");
2749. 	display_nhwindow(WIN_MESSAGE, FALSE);
2750. 	if (Luck > -13 && rn2(13+Luck) > 7) {	/* saved by luck */
2751. 	    /* trap went off, but good luck prevents damage */
2752. 	    switch (rn2(13)) {
2753. 		case 12:
2754. 		case 11:  msg = "explosive charge is a dud";  break;
2755. 		case 10:
2756. 		case  9:  msg = "electric charge is grounded";  break;
2757. 		case  8:
2758. 		case  7:  msg = "flame fizzles out";  break;
2759. 		case  6:
2760. 		case  5:
2761. 		case  4:  msg = "poisoned needle misses";  break;
2762. 		case  3:
2763. 		case  2:
2764. 		case  1:
2765. 		case  0:  msg = "gas cloud blows away";  break;
2766. 		default:  impossible("chest disarm bug");  msg = (char *)0;
2767. 			  break;
2768. 	    }
2769. 	    if (msg) pline("But luckily the %s!", msg);
2770. 	} else {
2771. 	    switch(rn2(20) ? ((Luck >= 13) ? 0 : rn2(13-Luck)) : rn2(26)) {
2772. 		case 25:
2773. 		case 24:
2774. 		case 23:
2775. 		case 22:
2776. 		case 21: {
2777. 			  struct monst *shkp = 0;
2778. 			  long loss = 0L;
2779. 			  boolean costly, insider;
2780. 			  register xchar ox = obj->ox, oy = obj->oy;
2781. 
2782. 			  /* the obj location need not be that of player */
2783. 			  costly = (costly_spot(ox, oy) &&
2784. 				   (shkp = shop_keeper(*in_rooms(ox, oy,
2785. 				    SHOPBASE))) != (struct monst *)0);
2786. 			  insider = (*u.ushops && inside_shop(u.ux, u.uy) &&
2787. 				    *in_rooms(ox, oy, SHOPBASE) == *u.ushops);
2788. 
2789. 			  pline("%s explodes!", The(xname(obj)));
2790. 			  Sprintf(buf, "exploding %s", xname(obj));
2791. 
2792. 			  if(costly)
2793. 			      loss += stolen_value(obj, ox, oy,
2794. 						(boolean)shkp->mpeaceful, TRUE);
2795. 			  delete_contents(obj);
2796. 			  for(otmp = level.objects[u.ux][u.uy];
2797. 							otmp; otmp = otmp2) {
2798. 			      otmp2 = otmp->nexthere;
2799. 			      if(costly)
2800. 				  loss += stolen_value(otmp, otmp->ox,
2801. 					  otmp->oy, (boolean)shkp->mpeaceful,
2802. 					  TRUE);
2803. 			      delobj(otmp);
2804. 			  }
2805. 			  wake_nearby();
2806. 			  losehp(d(6,6), buf, KILLED_BY_AN);
2807. 			  exercise(A_STR, FALSE);
2808. 			  if(costly && loss) {
2809. 			      if(insider)
2810. 			      You("owe %ld zorkmids for objects destroyed.",
2811. 							loss);
2812. 			      else {
2813. 				  You("caused %ld zorkmids worth of damage!",
2814. 							loss);
2815. 				  make_angry_shk(shkp, ox, oy);
2816. 			      }
2817. 			  }
2818. 			  return TRUE;
2819. 			}
2820. 		case 20:
2821. 		case 19:
2822. 		case 18:
2823. 		case 17:
2824. 			pline("A cloud of noxious gas billows from %s.",
2825. 							the(xname(obj)));
2826. 			poisoned("gas cloud", A_STR, "cloud of poison gas",15);
2827. 			exercise(A_CON, FALSE);
2828. 			break;
2829. 		case 16:
2830. 		case 15:
2831. 		case 14:
2832. 		case 13:
2833. 			You_feel("a needle prick your %s.",body_part(bodypart));
2834. 			poisoned("needle", A_CON, "poisoned needle",10);
2835. 			exercise(A_CON, FALSE);
2836. 			break;
2837. 		case 12:
2838. 		case 11:
2839. 		case 10:
2840. 		case 9:
2841. 			dofiretrap(obj);
2842. 			break;
2843. 		case 8:
2844. 		case 7:
2845. 		case 6: {
2846. 			int dmg;
2847. 
2848. 			You("are jolted by a surge of electricity!");
2849. 			if(Shock_resistance)  {
2850. 			    shieldeff(u.ux, u.uy);
2851. 			    You("don't seem to be affected.");
2852. 			    dmg = 0;
2853. 			} else
2854. 			    dmg = d(4, 4);
2855. 			destroy_item(RING_CLASS, AD_ELEC);
2856. 			destroy_item(WAND_CLASS, AD_ELEC);
2857. 			if (dmg) losehp(dmg, "electric shock", KILLED_BY_AN);
2858. 			break;
2859. 		      }
2860. 		case 5:
2861. 		case 4:
2862. 		case 3:
2863. 			if (!Free_action) {                        
2864. 			pline("Suddenly you are frozen in place!");
2865. 			nomul(-d(5, 6));
2866. 			exercise(A_DEX, FALSE);
2867. 			nomovemsg = You_can_move_again;
2868. 			} else You("momentarily stiffen.");
2869. 			break;
2870. 		case 2:
2871. 		case 1:
2872. 		case 0:
2873. 			pline("A cloud of %s gas billows from %s.",
2874. 						hcolor((char *)0),
2875. 						the(xname(obj)));
2876. 			if(!Stunned) {
2877. 			    if (Hallucination)
2878. 				pline("What a groovy feeling!");
2879. 			    else if (Blind)
2880. 				You("stagger and get dizzy...");
2881. 			    else
2882. 				You("stagger and your vision blurs...");
2883. 			}
2884. 			make_stunned(HStun + rn1(7, 16),FALSE);
2885. 			make_hallucinated(HHallucination + rn1(5, 16),FALSE,0L);
2886. 			break;
2887. 		default: impossible("bad chest trap");
2888. 			break;
2889. 	    }
2890. 	    bot();			/* to get immediate botl re-display */
2891. 	}
2892. 
2893. 	return FALSE;
2894. }
2895. 
2896. #endif /* OVLB */
2897. #ifdef OVL0
2898. 
2899. struct trap *
2900. t_at(x,y)
2901. register int x, y;
2902. {
2903. 	register struct trap *trap = ftrap;
2904. 	while(trap) {
2905. 		if(trap->tx == x && trap->ty == y) return(trap);
2906. 		trap = trap->ntrap;
2907. 	}
2908. 	return((struct trap *)0);
2909. }
2910. 
2911. #endif /* OVL0 */
2912. #ifdef OVLB
2913. 
2914. void
2915. deltrap(trap)
2916. register struct trap *trap;
2917. {
2918. 	register struct trap *ttmp;
2919. 
2920. 	if(trap == ftrap)
2921. 		ftrap = ftrap->ntrap;
2922. 	else {
2923. 		for(ttmp = ftrap; ttmp->ntrap != trap; ttmp = ttmp->ntrap) ;
2924. 		ttmp->ntrap = trap->ntrap;
2925. 	}
2926. 	dealloc_trap(trap);
2927. }
2928. 
2929. boolean delfloortrap(ttmp)
2930. register struct trap *ttmp;
2931. {
2932. 	/* Destroy a trap that emanates from the floor. */
2933. 	/* some of these are arbitrary -dlc */
2934. 	if (ttmp && ((ttmp->ttyp == SQKY_BOARD) ||
2935. 		     (ttmp->ttyp == BEAR_TRAP) ||
2936. 		     (ttmp->ttyp == LANDMINE) ||
2937. 		     (ttmp->ttyp == FIRE_TRAP) ||
2938. 		     (ttmp->ttyp == PIT) ||
2939. 		     (ttmp->ttyp == SPIKED_PIT) ||
2940. 		     (ttmp->ttyp == HOLE) ||
2941. 		     (ttmp->ttyp == TRAPDOOR) ||
2942. 		     (ttmp->ttyp == TELEP_TRAP) ||
2943. 		     (ttmp->ttyp == LEVEL_TELEP) ||
2944. 		     (ttmp->ttyp == WEB) ||
2945. 		     (ttmp->ttyp == MAGIC_TRAP) ||
2946. 		     (ttmp->ttyp == ANTI_MAGIC))) {
2947. 	    register struct monst *mtmp;
2948. 
2949. 	    if (ttmp->tx == u.ux && ttmp->ty == u.uy) {
2950. 		u.utrap = 0;
2951. 		u.utraptype = 0;
2952. 	    } else if ((mtmp = m_at(ttmp->tx, ttmp->ty)) != 0) {
2953. 		mtmp->mtrapped = 0;
2954. 	    }
2955. 	    deltrap(ttmp);
2956. 	    return TRUE;
2957. 	} else
2958. 	    return FALSE;
2959. }
2960. 
2961. /* used for doors (also tins).  can be used for anything else that opens. */
2962. void
2963. b_trapped(item, bodypart)
2964. register const char *item;
2965. register int bodypart;
2966. {
2967. 	register int lvl = level_difficulty();
2968. 	int dmg = rnd(5 + (lvl < 5 ? lvl : 2+lvl/2));
2969. 
2970. 	pline("KABOOM!!  %s was booby-trapped!", The(item));
2971. 	wake_nearby();
2972. 	losehp(dmg, "explosion", KILLED_BY_AN);
2973. 	exercise(A_STR, FALSE);
2974. 	if (bodypart) exercise(A_CON, FALSE);
2975. 	make_stunned(HStun + dmg, TRUE);
2976. }
2977. 
2978. /* Monster is hit by trap. */
2979. /* Note: doesn't work if both obj and d_override are null */
2980. STATIC_OVL boolean
2981. thitm(tlev, mon, obj, d_override)
2982. register int tlev;
2983. register struct monst *mon;
2984. register struct obj *obj;
2985. int d_override;
2986. {
2987. 	register int strike;
2988. 	register boolean trapkilled = FALSE;
2989. 
2990. 	if (d_override) strike = 1;
2991. 	else if (obj) strike = (find_mac(mon) + tlev + obj->spe <= rnd(20));
2992. 	else strike = (find_mac(mon) + tlev <= rnd(20));
2993. 
2994. 	/* Actually more accurate than thitu, which doesn't take
2995. 	 * obj->spe into account.
2996. 	 */
2997. 	if(!strike) {
2998. 		if (cansee(mon->mx, mon->my))
2999. 			pline("%s is almost hit by %s!", Monnam(mon),
3000. 								doname(obj));
3001. 	} else {
3002. 		int dam = 1;
3003. 
3004. 		if (obj && cansee(mon->mx, mon->my))
3005. 			pline("%s is hit by %s!", Monnam(mon), doname(obj));
3006. 		if (d_override) dam = d_override;
3007. 		else if (obj) {
3008. 			dam = dmgval(obj, mon);
3009. 			if (dam < 1) dam = 1;
3010. 		}
3011. 		if ((mon->mhp -= dam) <= 0) {
3012. 			int xx = mon->mx;
3013. 			int yy = mon->my;
3014. 
3015. 			monkilled(mon, "", AD_PHYS);
3016. 			if (mon->mhp <= 0) {
3017. 				newsym(xx, yy);
3018. 				trapkilled = TRUE;
3019. 			}
3020. 		}
3021. 	}
3022. 	if (obj && (!strike || d_override)) {
3023. 		place_object(obj, mon->mx, mon->my);
3024. 		stackobj(obj);
3025. 	} else if (obj) dealloc_obj(obj);
3026. 
3027. 	return trapkilled;
3028. }
3029. 
3030. boolean
3031. unconscious()
3032. {
3033. 	return((boolean)(multi < 0 && (!nomovemsg ||
3034. 		u.usleep ||
3035. 		!strncmp(nomovemsg,"You regain con", 15) ||
3036. 		!strncmp(nomovemsg,"You are consci", 15))));
3037. }
3038. 
3039. static char lava_killer[] = "molten lava";
3040. 
3041. boolean
3042. lava_effects()
3043. {
3044.     register struct obj *obj, *obj2;
3045.     int dmg;
3046. 
3047. 
3048. 	burn_away_slime();
3049.     if (likes_lava(youmonst.data)) return FALSE;
3050. 
3051.     if (!Fire_resistance) {
3052. 	if(Wwalking) {
3053. 	    dmg = d(6,6);
3054. 	    pline_The("lava here burns you!");
3055. 	    if(dmg < u.uhp) {
3056. 		losehp(dmg, lava_killer, KILLED_BY);
3057. 		goto burn_stuff;
3058. 	    }
3059. 	} else
3060. 	    You("fall into the lava!");
3061. 
3062. 	for(obj = invent; obj; obj = obj2) {
3063. 	    obj2 = obj->nobj;
3064. 	    if(is_organic(obj) && !obj->oerodeproof) {
3065. 		if(obj->owornmask) {
3066. 		    if(obj == uarm) (void) Armor_gone();
3067. 		    else if(obj == uarmc) (void) Cloak_off();
3068. 		    else if(obj == uarmh) (void) Helmet_off();
3069. 		    else if(obj == uarms) (void) Shield_off();
3070. 		    else if(obj == uarmg) (void) Gloves_off();
3071. 		    else if(obj == uarmf) (void) Boots_off();
3072. #ifdef TOURIST
3073. 		    else if(obj == uarmu) setnotworn(obj);
3074. #endif
3075. 		    else if(obj == uleft) Ring_gone(obj);
3076. 		    else if(obj == uright) Ring_gone(obj);
3077. 		    else if(obj == ublindf) Blindf_off(obj);
3078. 		    else if(obj == uwep) uwepgone();
3079. 			else if (obj == uquiver) uqwepgone();
3080. 			else if (obj == uswapwep) uswapwepgone();
3081. 
3082. 		    if(Lifesaved
3083. #ifdef WIZARD
3084. 		       || wizard
3085. #endif
3086. 		       ) Your("%s into flame!", aobjnam(obj, "burst"));
3087. 		}
3088. 		useup(obj);
3089. 	    }
3090. 	}
3091. 
3092. 	/* s/he died... */
3093. 	u.uhp = -1;
3094. 	killer_format = KILLED_BY;
3095. 	killer = lava_killer;
3096. 	You("burn to a crisp...");
3097. 	done(BURNING);
3098. 	while (!safe_teleds()) {
3099. 		pline("You're still burning.");
3100. 		done(BURNING);
3101. 	}
3102. 	You("find yourself back on solid %s.", surface(u.ux, u.uy));
3103. 	return(TRUE);
3104.     }
3105. 
3106.     if (!Wwalking) {
3107. 	u.utrap = rn1(4, 4) + (rn1(4, 12) << 8);
3108. 	u.utraptype = TT_LAVA;
3109. 	You("sink into the lava, but it only burns slightly!");
3110. 	if (u.uhp > 1)
3111. 	    losehp(1, lava_killer, KILLED_BY);
3112.     }
3113.     /* just want to burn boots, not all armor; destroy_item doesn't work on
3114.        armor anyway */
3115. burn_stuff:
3116.     if(uarmf && !uarmf->oerodeproof && is_organic(uarmf)) {
3117. 	/* save uarmf value because Boots_off() sets uarmf to null */
3118. 	obj = uarmf;
3119. 	Your("%s burst into flame!", xname(obj));
3120. 	(void) Boots_off();
3121. 	useup(obj);
3122.     }
3123.     destroy_item(SCROLL_CLASS, AD_FIRE);
3124.     destroy_item(SPBOOK_CLASS, AD_FIRE);
3125.     destroy_item(POTION_CLASS, AD_FIRE);
3126.     return(FALSE);
3127. }
3128. 
3129. #endif /* OVLB */
3130. 
3131. /*trap.c*/