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Source:NetHack 3.2.0/trap.c

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Below is the full text to trap.c from the source code of NetHack 3.2.0. To link to a particular line, write [[NetHack 3.2.0/trap.c#line123]], for example.

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

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1.    /*	SCCS Id: @(#)trap.c	3.2	96/04/08	*/
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.   
26.   #ifndef OVLB
27.   STATIC_VAR const char *a_your[2];
28.   STATIC_VAR const char *A_Your[2];
29.   STATIC_VAR const char *the_your[2];
30.   STATIC_VAR const char tower_of_flame[];
31.   STATIC_VAR const char *A_gush_of_water_hits;
32.   
33.   #else
34.   
35.   STATIC_VAR const char *a_your[2] = { "a", "your" };
36.   STATIC_VAR const char *A_Your[2] = { "A", "Your" };
37.   STATIC_VAR const char *the_your[2] = { "the", "your" };
38.   STATIC_VAR const char tower_of_flame[] = "tower of flame";
39.   STATIC_VAR const char *A_gush_of_water_hits = "A gush of water hits";
40.   
41.   #endif /* OVLB */
42.   
43.   #ifdef OVLB
44.   
45.   /* called when you're hit by fire (dofiretrap,buzz,zapyourself,explode) */
46.   boolean			/* returns TRUE if hit on torso */
47.   burnarmor()
48.   {
49.   #define burn_dmg(obj,descr) rust_dmg(obj, descr, 0, FALSE)
50.       while (1) {
51.   	switch (rn2(5)) {
52.   	case 0:
53.   	    if (!burn_dmg(uarmh, "leather helmet")) continue;
54.   	    break;
55.   	case 1:
56.   	    if (uarmc)
57.   		(void) burn_dmg(uarmc, "cloak");
58.   	    else if (uarm)
59.   		(void) burn_dmg(uarm, xname(uarm));
60.   #ifdef TOURIST
61.   	    else if (uarmu)
62.   		(void) burn_dmg(uarmu, "shirt");
63.   #endif
64.   	    return TRUE;
65.   	case 2:
66.   	    if (!burn_dmg(uarms, "wooden shield")) continue;
67.   	    break;
68.   	case 3:
69.   	    if (!burn_dmg(uarmg, "gloves")) continue;
70.   	    break;
71.   	case 4:
72.   	    if (!burn_dmg(uarmf, "boots")) continue;
73.   	    break;
74.   	}
75.   	break; /* Out of while loop */
76.       }
77.       return FALSE;
78.   #undef burn_dmg
79.   }
80.   
81.   /* Generic rust-armor function.  Returns TRUE if a message was printed;
82.    * "print", if set, means to print a message (and thus to return TRUE) even
83.    * if the item could not be rusted; otherwise a message is printed and TRUE is
84.    * returned only for rustable items.
85.    */
86.   boolean
87.   rust_dmg(otmp, ostr, type, print)
88.   register struct obj *otmp;
89.   register const char *ostr;
90.   int type;
91.   boolean print;
92.   {
93.   	static NEARDATA const char *action[] = { "smoulder", "rust", "rot", "corrode" };
94.   	static NEARDATA const char *msg[] =  { "burnt", "rusted", "rotten", "corroded" };
95.   	boolean vulnerable = FALSE;
96.   	boolean plural;
97.   	boolean grprot = FALSE;
98.   
99.   	if (!otmp) return(FALSE);
100.  	switch(type) {
101.  		case 0:
102.  		case 2: vulnerable = is_flammable(otmp); break;
103.  		case 1: vulnerable = is_rustprone(otmp); grprot = TRUE; break;
104.  		case 3: vulnerable = is_corrodeable(otmp); grprot = TRUE; break;
105.  	}
106.  
107.  	if (!print && (!vulnerable || otmp->oerodeproof || otmp->oeroded == MAX_ERODE))
108.  		return FALSE;
109.  
110.  	plural = is_gloves(otmp) || is_boots(otmp);
111.  
112.  	if (!vulnerable) {
113.  		if (flags.verbose)
114.  		    Your("%s %s not affected.", ostr, plural ? "are" : "is");
115.  	} else if (otmp->oeroded < MAX_ERODE) {
116.  		if (grprot && otmp->greased) {
117.  			grease_protect(otmp,ostr,plural);
118.  		} else if (otmp->oerodeproof || (otmp->blessed && !rnl(4))) {
119.  			if (flags.verbose)
120.  				pline("Somehow, your %s %s not affected.",
121.  					ostr, plural ? "are" : "is");
122.  		} else {
123.  			Your("%s %s%s%s!", ostr, action[type],
124.  				plural ? "" : "s",
125.  				otmp->oeroded+1 == MAX_ERODE ? " completely" :
126.  				otmp->oeroded ? " further" : "");
127.  			otmp->oeroded++;
128.  		}
129.  	} else {
130.  		if (flags.verbose)
131.  			Your("%s %s%s completely %s.", ostr,
132.  			     Blind ? "feel" : "look",
133.  			     plural ? "" : "s", msg[type]);
134.  	}
135.  	return(TRUE);
136.  }
137.  
138.  void
139.  grease_protect(otmp,ostr,plu)
140.  register struct obj *otmp;
141.  register const char *ostr;
142.  register boolean plu;
143.  {
144.  	static const char txt[] = "protected by the layer of grease!";
145.  
146.  	if (ostr)
147.  		Your("%s %s %s",ostr,plu ? "are" : "is",txt);
148.  	else
149.  		Your("%s %s",aobjnam(otmp,"are"),txt);
150.  	if (!rn2(2)) {
151.  		pline_The("grease dissolves.");
152.  		otmp->greased = 0;
153.  	}
154.  }
155.  
156.  struct trap *
157.  maketrap(x,y,typ)
158.  register int x, y, typ;
159.  {
160.  	register struct trap *ttmp;
161.  	register struct rm *lev;
162.  	register boolean oldplace;
163.  
164.  	if ((ttmp = t_at(x,y)) != 0) {
165.  	    if (ttmp->ttyp == MAGIC_PORTAL) return (struct trap *)0;
166.  	    oldplace = TRUE;
167.  	    if (u.utrap && (x == u.ux) && (y == u.uy) &&
168.  	      ((u.utraptype == TT_BEARTRAP && typ != BEAR_TRAP) ||
169.  	      (u.utraptype == TT_WEB && typ != WEB) ||
170.  	      (u.utraptype == TT_PIT && typ != PIT && typ != SPIKED_PIT)))
171.  		    u.utrap = 0;
172.  	} else {
173.  	    oldplace = FALSE;
174.  	    ttmp = newtrap();
175.  	    ttmp->tx = x;
176.  	    ttmp->ty = y;
177.  	    ttmp->launch.x = -1;	/* force error if used before set */
178.  	    ttmp->launch.y = -1;
179.  	}
180.  	ttmp->ttyp = typ;
181.  	switch(typ) {
182.  	    case STATUE_TRAP:	    /* create a "living" statue */
183.  		(void) mkcorpstat(STATUE, &mons[rndmonnum()], x, y, FALSE);
184.  		break;
185.  	    case ROLLING_BOULDER_TRAP:	/* boulder will roll towards trigger */
186.  		(void) mkroll_launch(ttmp, x, y, BOULDER, 1L);
187.  		break;
188.  	    case HOLE:
189.  	    case PIT:
190.  	    case SPIKED_PIT:
191.  	    case TRAPDOOR:
192.  		lev = &levl[x][y];
193.  		if (*in_rooms(x, y, SHOPBASE) &&
194.  			((typ == HOLE || typ == TRAPDOOR) || IS_DOOR(lev->typ)))
195.  		    add_damage(x, y,		/* schedule repair */
196.  			(IS_DOOR(lev->typ) && !flags.mon_moving) ? 200L : 0L);
197.  		lev->doormask = 0;	/* subsumes altarmask, icedpool... */
198.  		if (IS_ROOM(lev->typ)) /* && !IS_AIR(lev->typ) */
199.  		    lev->typ = ROOM;
200.  
201.  		/*
202.  		 * some cases which can happen when digging
203.  		 * down while phazing thru solid areas
204.  		 */
205.  		else if (lev->typ == STONE || lev->typ == SCORR)
206.  		    lev->typ = CORR;
207.  		else if (IS_WALL(lev->typ) || lev->typ == SDOOR)
208.  		    lev->typ = level.flags.is_maze_lev ? ROOM :
209.  			       level.flags.is_cavernous_lev ? CORR : DOOR;
210.  
211.  		unearth_objs(x, y);
212.  		break;
213.  	}
214.  	if (ttmp->ttyp == HOLE) ttmp->tseen = 1;  /* You can't hide a hole */
215.  	else ttmp->tseen = 0;
216.  	ttmp->once = 0;
217.  	ttmp->madeby_u = 0;
218.  	ttmp->dst.dnum = -1;
219.  	ttmp->dst.dlevel = -1;
220.  	if (!oldplace) {
221.  	    ttmp->ntrap = ftrap;
222.  	    ftrap = ttmp;
223.  	}
224.  	return(ttmp);
225.  }
226.  
227.  void
228.  fall_through(td)
229.  boolean td;	/* td == TRUE : trapdoor or hole */
230.  {
231.  	d_level dtmp;
232.  	char msgbuf[BUFSZ];
233.  	const char *dont_fall = 0;
234.  	register int newlevel = dunlev(&u.uz);
235.  
236.  	if(Blind && Levitation) return;
237.  
238.  	do {
239.  	    newlevel++;
240.  	} while(!rn2(4) && newlevel < dunlevs_in_dungeon(&u.uz));
241.  
242.  	if(td) {
243.  		struct trap *t=t_at(u.ux,u.uy);
244.  		if (t->ttyp == TRAPDOOR)
245.  			pline("A trap door opens up under you!");
246.  		else
247.  			pline("There's a gaping hole under you!");
248.  	} else pline_The("%s opens up under you!", surface(u.ux,u.uy));
249.  
250.  	if(Levitation || u.ustuck || !Can_fall_thru(&u.uz)
251.  	   || is_flyer(uasmon) || is_clinger(uasmon)
252.  	   || (Inhell && !u.uevent.invoked &&
253.  					newlevel == dunlevs_in_dungeon(&u.uz))
254.  		) {
255.  	    dont_fall = "don't fall in.";
256.  	} else if (uasmon->msize >= MZ_HUGE) {
257.  	    dont_fall = "don't fit through.";
258.  	} else if (!next_to_u()) {
259.  	    dont_fall = "are jerked back by your pet!";
260.  	}
261.  	if (dont_fall) {
262.  	    You(dont_fall);
263.  	    /* hero didn't fall through, but any objects here might */
264.  	    impact_drop((struct obj *)0, u.ux, u.uy, 0);
265.  	    if (!td) {
266.  		display_nhwindow(WIN_MESSAGE, FALSE);
267.  		pline_The("opening under you closes up.");
268.  	    }
269.  	    return;
270.  	}
271.  
272.  	if(*u.ushops) shopdig(1);
273.  	if (Is_stronghold(&u.uz)) {
274.  	    find_hell(&dtmp);
275.  	} else {
276.  	    dtmp.dnum = u.uz.dnum;
277.  	    dtmp.dlevel = newlevel;
278.  	}
279.  	if (!td)
280.  	    Sprintf(msgbuf, "The hole in the %s above you closes up.",
281.  		    ceiling(u.ux,u.uy));
282.  	schedule_goto(&dtmp, FALSE, TRUE, 0,
283.  		      (char *)0, !td ? msgbuf : (char *)0);
284.  }
285.  
286.  /* you've either stepped onto a statue trap's location
287.     or you've triggered a statue trap by searching next to it */
288.  void
289.  activate_statue_trap(trap, x, y)
290.  struct trap *trap;
291.  xchar x, y;
292.  {
293.  	struct monst *mtmp;
294.  	struct obj *otmp = sobj_at(STATUE, x, y);
295.  
296.  	deltrap(trap);
297.  	if (otmp && (mtmp = makemon(&mons[otmp->corpsenm], x, y)) != 0) {
298.  	    delobj(otmp);
299.  	    /* mimic statue becomes seen mimic; other hiders won't be hidden */
300.  	    if (mtmp->m_ap_type) seemimic(mtmp);
301.  	    else mtmp->mundetected = FALSE;
302.  	    if (x == u.ux && y == u.uy)
303.  		pline_The("statue comes to life!");
304.  	    else
305.  		You("find %s posing as a statue.", a_monnam(mtmp));
306.  	    /* avoid hiding under nothing */
307.  	    if (x == u.ux && y == u.uy &&
308.  		    Upolyd && hides_under(uasmon) && !OBJ_AT(x, y))
309.  		u.uundetected = 0;
310.  	}
311.  	if (Blind) feel_location(x, y);
312.  	else newsym(x, y);
313.  }
314.  
315.  void
316.  dotrap(trap)
317.  register struct trap *trap;
318.  {
319.  	register int ttype = trap->ttyp;
320.  	register struct monst *mtmp;
321.  	register struct obj *otmp;
322.  	boolean already_seen = trap->tseen;
323.  
324.  	nomul(0);
325.  	if(already_seen) {
326.  	    if ((Levitation || is_flyer(uasmon)) &&
327.  		    (ttype == PIT || ttype == SPIKED_PIT || ttype == HOLE ||
328.  		    ttype == BEAR_TRAP)) {
329.  		You("%s over %s %s.",
330.  		    Levitation ? "float" : "fly",
331.  		    a_your[trap->madeby_u],
332.  		    defsyms[trap_to_defsym(ttype)].explanation);
333.  		return;
334.  	    }
335.  	    if(!Fumbling && ttype != MAGIC_PORTAL && ttype != ANTI_MAGIC &&
336.  		(!rn2(5) ||
337.  	    ((ttype == PIT || ttype == SPIKED_PIT) && is_clinger(uasmon)))) {
338.  		You("escape %s %s.",
339.  		    (ttype == ARROW_TRAP && !trap->madeby_u) ? "an" :
340.  			a_your[trap->madeby_u],
341.  		    defsyms[trap_to_defsym(ttype)].explanation);
342.  		return;
343.  	    }
344.  	}
345.  		
346.  	switch(ttype) {
347.  	    case ARROW_TRAP:
348.  		seetrap(trap);
349.  		pline("An arrow shoots out at you!");
350.  		otmp = mksobj(ARROW, TRUE, FALSE);
351.  		otmp->quan = 1L;
352.  		otmp->owt = weight(otmp);
353.  		if (thitu(8, dmgval(otmp, &youmonst), otmp, "arrow")) {
354.  		    obfree(otmp, (struct obj *)0);
355.  		} else {
356.  		    place_object(otmp, u.ux, u.uy);
357.  		    if (!Blind) otmp->dknown = 1;
358.  		    stackobj(otmp);
359.  		    newsym(u.ux, u.uy);
360.  		}
361.  		break;
362.  	    case DART_TRAP:
363.  		seetrap(trap);
364.  		pline("A little dart shoots out at you!");
365.  		otmp = mksobj(DART, TRUE, FALSE);
366.  		otmp->quan = 1L;
367.  		otmp->owt = weight(otmp);
368.  		if (!rn2(6)) otmp->opoisoned = 1;
369.  		if (thitu(7, dmgval(otmp, &youmonst), otmp, "little dart")) {
370.  		    if (otmp->opoisoned)
371.  			poisoned("dart",A_CON,"poison dart",10);
372.  		    obfree(otmp, (struct obj *)0);
373.  		} else {
374.  		    place_object(otmp, u.ux, u.uy);
375.  		    if (!Blind) otmp->dknown = 1;
376.  		    stackobj(otmp);
377.  		    newsym(u.ux, u.uy);
378.  		}
379.  		break;
380.  	    case ROCKTRAP:
381.  		{
382.  		    int dmg = d(2,6); /* should be std ROCK dmg? */
383.  
384.  		    seetrap(trap);
385.  		    otmp = mksobj_at(ROCK, u.ux, u.uy, TRUE);
386.  		    otmp->quan = 1L;
387.  		    otmp->owt = weight(otmp);
388.  
389.      pline("A trap door in the %s opens and a rock falls on your %s!",
390.  			    ceiling(u.ux,u.uy),
391.  			    body_part(HEAD));
392.  
393.  		    if (uarmh) {
394.  			if(is_metallic(uarmh)) {
395.  			    pline("Fortunately, you are wearing a hard helmet.");
396.  			    dmg = 2;
397.  			} else if (flags.verbose) {
398.  			    Your("%s does not protect you.", xname(uarmh));
399.  			}
400.  		    }
401.  
402.  		    if (!Blind) otmp->dknown = 1;
403.  		    stackobj(otmp);
404.  		    newsym(u.ux,u.uy);	/* map the rock */
405.  
406.  		    losehp(dmg, "falling rock", KILLED_BY_AN);
407.  		    exercise(A_STR, FALSE);
408.  		}
409.  		break;
410.  
411.  	    case SQKY_BOARD:	    /* stepped on a squeaky board */
412.  		if (Levitation || is_flyer(uasmon)) {
413.  		    if (!Blind) {
414.  			seetrap(trap);
415.  			if (Hallucination)
416.  				You("notice a crease in the linoleum.");
417.  			else
418.  				You("notice a loose board below you.");
419.  		    }
420.  		} else {
421.  		    seetrap(trap);
422.  		    pline("A board beneath you squeaks loudly.");
423.  		    wake_nearby();
424.  		}
425.  		break;
426.  
427.  	    case BEAR_TRAP:
428.  		if(Levitation || is_flyer(uasmon)) break;
429.  		seetrap(trap);
430.  		if(amorphous(uasmon) || is_whirly(uasmon) ||
431.  						    unsolid(uasmon)) {
432.  		    pline("%s bear trap closes harmlessly through you.",
433.  			    A_Your[trap->madeby_u]);
434.  		    break;
435.  		}
436.  		if(uasmon->msize <= MZ_SMALL) {
437.  		    pline("%s bear trap closes harmlessly over you.",
438.  			    A_Your[trap->madeby_u]);
439.  		    break;
440.  		}
441.  		u.utrap = rn1(4, 4);
442.  		u.utraptype = TT_BEARTRAP;
443.  		pline("%s bear trap closes on your %s!",
444.  			    A_Your[trap->madeby_u], body_part(FOOT));
445.  		if(u.umonnum == PM_OWLBEAR || u.umonnum == PM_BUGBEAR)
446.  		    You("howl in anger!");
447.  		exercise(A_DEX, FALSE);
448.  		break;
449.  
450.  	    case SLP_GAS_TRAP:
451.  		seetrap(trap);
452.  		if(Sleep_resistance) {
453.  		    You("are enveloped in a cloud of gas!");
454.  		    break;
455.  		}
456.  		pline("A cloud of gas puts you to sleep!");
457.  		flags.soundok = 0;
458.  		fall_asleep(-rnd(25), TRUE);
459.  		afternmv = Hear_again;
460.  		break;
461.  
462.  	    case RUST_TRAP:
463.  		seetrap(trap);
464.  		if (u.umonnum == PM_IRON_GOLEM) {
465.  		    pline("%s you!", A_gush_of_water_hits);
466.  		    You("are covered with rust!");
467.  		    rehumanize();
468.  		    break;
469.  		} else if (u.umonnum == PM_GREMLIN && rn2(3)) {
470.  		    pline("%s you!", A_gush_of_water_hits);
471.  		    if ((mtmp = cloneu()) != 0) {
472.  			mtmp->mhpmax = (u.mhmax /= 2);
473.  			You("multiply.");
474.  		    }
475.  		    break;
476.  		}
477.  
478.  	    /* Unlike monsters, traps cannot aim their rust attacks at
479.  	     * you, so instead of looping through and taking either the
480.  	     * first rustable one or the body, we take whatever we get,
481.  	     * even if it is not rustable.
482.  	     */
483.  		switch (rn2(5)) {
484.  		    case 0:
485.  			pline("%s you on the %s!", A_gush_of_water_hits,
486.  				    body_part(HEAD));
487.  			(void) rust_dmg(uarmh, "helmet", 1, TRUE);
488.  			break;
489.  		    case 1:
490.  			pline("%s your left %s!", A_gush_of_water_hits,
491.  				    body_part(ARM));
492.  			if (rust_dmg(uarms, "shield", 1, TRUE)) break;
493.  			if (uwep && bimanual(uwep))
494.  			    goto two_hand;
495.  			/* Two goto statements in a row--aaarrrgggh! */
496.  glovecheck:		    (void) rust_dmg(uarmg, "gauntlets", 1, TRUE);
497.  			/* Not "metal gauntlets" since it gets called
498.  			 * even if it's leather for the message
499.  			 */
500.  			break;
501.  		    case 2:
502.  			pline("%s your right %s!", A_gush_of_water_hits,
503.  				    body_part(ARM));
504.  two_hand:		    erode_weapon(FALSE);
505.  			goto glovecheck;
506.  		    default:
507.  			pline("%s you!", A_gush_of_water_hits);
508.  			for (otmp=invent; otmp; otmp = otmp->nobj)
509.  				    (void) snuff_lit(otmp);
510.  			if (uarmc) (void) rust_dmg(uarmc, "cloak", 1, TRUE);
511.  			else if (uarm)
512.  			    (void) rust_dmg(uarm, "armor", 1, TRUE);
513.  #ifdef TOURIST
514.  			else if (uarmu)
515.  			    (void) rust_dmg(uarmu, "shirt", 1, TRUE);
516.  #endif
517.  		}
518.  		break;
519.  
520.  	    case FIRE_TRAP:
521.  		seetrap(trap);
522.  		dofiretrap((struct obj *)0);
523.  		break;
524.  
525.  	    case PIT:
526.  	    case SPIKED_PIT:
527.  		if (Levitation || is_flyer(uasmon)) break;
528.  		seetrap(trap);
529.  		if (is_clinger(uasmon)) {
530.  		    if(trap->tseen) {
531.  			You("see %s %spit below you.", a_your[trap->madeby_u],
532.  			    ttype == SPIKED_PIT ? "spiked " : "");
533.  		    } else {
534.  			pline("%s pit %sopens up under you!",
535.  			    A_Your[trap->madeby_u],
536.  			    ttype == SPIKED_PIT ? "full of spikes " : "");
537.  			You("don't fall in!");
538.  		    }
539.  		    break;
540.  		}
541.  		You("fall into %s pit!", a_your[trap->madeby_u]);
542.  		if (ttype == SPIKED_PIT)
543.  		    You("land on a set of sharp iron spikes!");
544.  		if (!passes_walls(uasmon))
545.  		    u.utrap = rn1(6,2);
546.  		u.utraptype = TT_PIT;
547.  		if (ttype == SPIKED_PIT) {
548.  		    losehp(rnd(10),"fell into a pit of iron spikes",
549.  			NO_KILLER_PREFIX);
550.  		    if (!rn2(6))
551.  			poisoned("spikes", A_STR, "fall onto poison spikes", 8);
552.  		} else
553.  		    losehp(rnd(6),"fell into a pit", NO_KILLER_PREFIX);
554.  		if (Punished && !carried(uball)) {
555.  		    unplacebc();
556.  		    ballfall();
557.  		    placebc();
558.  		}
559.  		selftouch("Falling, you");
560.  		vision_full_recalc = 1;	/* vision limits change */
561.  		exercise(A_STR, FALSE);
562.  		exercise(A_DEX, FALSE);
563.  		break;
564.  	    case HOLE:
565.  	    case TRAPDOOR:
566.  		seetrap(trap);
567.  		if(!Can_fall_thru(&u.uz))
568.  		    panic("Holes & trapdoors cannot exist on this level.");
569.  		fall_through(TRUE);
570.  		break;
571.  
572.  	    case TELEP_TRAP:
573.  		seetrap(trap);
574.  		tele_trap(trap);
575.  		break;
576.  	    case LEVEL_TELEP:
577.  		seetrap(trap);
578.  		level_tele_trap(trap);
579.  		break;
580.  
581.  	    case WEB: /* Our luckless player has stumbled into a web. */
582.  		seetrap(trap);
583.  		if (amorphous(uasmon) || is_whirly(uasmon) ||
584.  						    unsolid(uasmon)) {
585.  		    if (acidic(uasmon) || u.umonnum == PM_GELATINOUS_CUBE ||
586.  			u.umonnum == PM_FIRE_ELEMENTAL) {
587.  			You("%s %s spider web!",
588.  			    (u.umonnum == PM_FIRE_ELEMENTAL) ? "burn" : "dissolve",
589.  			    a_your[trap->madeby_u]);
590.  			deltrap(trap);
591.  			newsym(u.ux,u.uy);
592.  			break;
593.  		    }
594.  		    You("flow through %s spider web.",
595.  			    a_your[trap->madeby_u]);
596.  		    break;
597.  		}
598.  		if (uasmon->mlet == S_SPIDER) {
599.  		    pline(trap->madeby_u ? "You take a walk on your web."
600.  					 : "There is a spider web here.");
601.  		    break;
602.  		}
603.  		You("%s into %s spider web!",
604.  		      Levitation ? (const char *)"float" :
605.  		      locomotion(uasmon, "stumble"),
606.  		      a_your[trap->madeby_u]);
607.  		u.utraptype = TT_WEB;
608.  
609.  		/* Time stuck in the web depends on your strength. */
610.  		{
611.  		    register int str = ACURR(A_STR);
612.  
613.  		    if (str == 3) u.utrap = rn1(6,6);
614.  		    else if (str < 6) u.utrap = rn1(6,4);
615.  		    else if (str < 9) u.utrap = rn1(4,4);
616.  		    else if (str < 12) u.utrap = rn1(4,2);
617.  		    else if (str < 15) u.utrap = rn1(2,2);
618.  		    else if (str < 18) u.utrap = rnd(2);
619.  		    else if (str < 69) u.utrap = 1;
620.  		    else {
621.  			u.utrap = 0;
622.  			You("tear through %s web!", a_your[trap->madeby_u]);
623.  			deltrap(trap);
624.  			newsym(u.ux,u.uy);	/* get rid of trap symbol */
625.  		    }
626.  		}
627.  		break;
628.  
629.  	    case STATUE_TRAP:
630.  		activate_statue_trap(trap, u.ux, u.uy);
631.  		break;
632.  
633.  	    case MAGIC_TRAP:	    /* A magic trap. */
634.  		seetrap(trap);
635.  		if (!rn2(30)) {
636.  		    deltrap(trap);
637.  		    newsym(u.ux,u.uy);	/* update position */
638.  		    You("are caught in a magical explosion!");
639.  		    losehp(rnd(10), "magical explosion", KILLED_BY_AN);
640.  		    Your("body absorbs some of the magical energy!");
641.  		    u.uen = (u.uenmax += 2);
642.  		} else domagictrap();
643.  		break;
644.  
645.  	    case ANTI_MAGIC:
646.  		seetrap(trap);
647.  		if(Antimagic) {
648.  		    shieldeff(u.ux, u.uy);
649.  		    You_feel("momentarily lethargic.");
650.  		} else drain_en(rnd(u.ulevel) + 1);
651.  		break;
652.  
653.  	    case POLY_TRAP:
654.  		seetrap(trap);
655.  		You("%s onto a polymorph trap!",
656.  		    Levitation ? (const char *)"float" :
657.  		    locomotion(uasmon, "step"));
658.  		if(Antimagic) {
659.  		    shieldeff(u.ux, u.uy);
660.  		    You_feel("momentarily different.");
661.  		    /* Trap did nothing; don't remove it --KAA */
662.  		} else {
663.  		    deltrap(trap);	/* delete trap before polymorph */
664.  		    newsym(u.ux,u.uy);	/* get rid of trap symbol */
665.  		    You_feel("a change coming over you.");
666.  		    polyself();
667.  		}
668.  		break;
669.  
670.  	    case LANDMINE:
671.  		if (Levitation || is_flyer(uasmon)) {
672.  		    if (!already_seen && rn2(3)) break;
673.  		    seetrap(trap);
674.  		    pline("%s %s in a pile of soil below you.",
675.  			    already_seen ? "There is" : "You discover",
676.  			    trap->madeby_u ? "the trigger of your mine" :
677.  					     "a trigger");
678.  		    if (already_seen && rn2(3)) break;
679.  		    pline("KAABLAMM!!!  The air currents set %s%s off!",
680.  			    already_seen ? a_your[trap->madeby_u] : "",
681.  			    already_seen ? " land mine" : "it");
682.  		} else {
683.  		    seetrap(trap);
684.  		    pline("KAABLAMM!!!  You triggered %s land mine!",
685.  					    a_your[trap->madeby_u]);
686.  		    set_wounded_legs(LEFT_SIDE, rn1(35, 41));
687.  		    set_wounded_legs(RIGHT_SIDE, rn1(35, 41));
688.  		    exercise(A_DEX, FALSE);
689.  		}
690.  		scatter(u.ux, u.uy, 4,
691.  			    MAY_DESTROY | MAY_HIT | MAY_FRACTURE | VIS_EFFECTS);
692.  		del_engr_at(u.ux, u.uy);
693.  		wake_nearto(u.ux, u.uy, 500);
694.  		trap->ttyp = PIT;		/* turn the mine into a pit */
695.  		trap->madeby_u = FALSE;	/* resulting pit isn't yours */
696.  		if (IS_DOOR(levl[u.ux][u.uy].typ))
697.  		    levl[u.ux][u.uy].doormask = D_BROKEN;
698.  		newsym(u.ux,u.uy);		/* update trap symbol */
699.  		losehp(rnd(16), "land mine", KILLED_BY_AN);
700.  		dotrap(trap);	/* fall recursively into the pit... */
701.  		break;
702.  
703.  	    case ROLLING_BOULDER_TRAP:
704.  		seetrap(trap);
705.  		pline("Click! You trigger a rolling boulder trap!");
706.  		if(!launch_obj(BOULDER, trap->launch.x, trap->launch.y,
707.  		      trap->launch2.x,trap->launch2.y, ROLL)) {
708.  		    deltrap(trap);
709.  		    newsym(u.ux,u.uy);	/* get rid of trap symbol */
710.  		    pline("Fortunately for you, no boulder was released.");
711.  		}
712.  		break;
713.  
714.  	    case MAGIC_PORTAL:
715.  		seetrap(trap);
716.  		domagicportal(trap);
717.  		break;
718.  
719.  	    default:
720.  		seetrap(trap);
721.  		impossible("You hit a trap of type %u", trap->ttyp);
722.  	}
723.  }
724.  #endif /* OVLB */
725.  #ifdef OVL3
726.  
727.  /*
728.   * Move obj from (x1,y1) to (x2,y2)
729.   *
730.   * Return 0 if no object was launched.
731.   *        1 if an object was launched and placed somewhere.
732.   *        2 if an object was launched, but used up.
733.   */
734.  int
735.  launch_obj(otyp, x1, y1, x2, y2, style)
736.  short otyp;
737.  register int x1,y1,x2,y2;
738.  int style;
739.  {
740.  	register struct monst *mtmp;
741.  	register struct obj *otmp;
742.  	register int dx,dy;
743.  	struct obj *singleobj;
744.  	boolean used_up = FALSE;
745.  	boolean otherside = FALSE;
746.  	int dist;
747.  	int tmp;
748.  	int delaycnt = 0;
749.  
750.  	otmp = sobj_at(otyp, x1, y1);
751.  	/* Try the other side too, for rolling boulder traps */
752.  	if (!otmp && otyp == BOULDER) {
753.  		otherside = TRUE;
754.  		otmp = sobj_at(otyp, x2, y2);
755.  	}
756.  	if (!otmp) return 0;
757.  	if (otherside) {	/* swap 'em */
758.  		int tx, ty;
759.  
760.  		tx = x1; ty = y1;
761.  		x1 = x2; y1 = y2;
762.  		x2 = tx; y2 = ty;
763.  	}
764.  
765.  	if (otmp->quan == 1L) {
766.  	    obj_extract_self(otmp);
767.  	    singleobj = otmp;
768.  	    otmp = (struct obj *) 0;
769.  	} else {
770.  	    singleobj = splitobj(otmp, otmp->quan - 1L);
771.  	    obj_extract_self(singleobj);
772.  	}
773.  	newsym(x1,y1);
774.  	/* in case you're using a pick-axe to chop the boulder that's being
775.  	   launched (perhaps a monster triggered it), destroy context so that
776.  	   next dig attempt never thinks you're resuming previous effort */
777.  	if ((otyp == BOULDER || otyp == STATUE) &&
778.  	    singleobj->ox == digging.pos.x && singleobj->oy == digging.pos.y)
779.  	    (void) memset((genericptr_t)&digging, 0, sizeof digging);
780.  
781.  	dist = distmin(x1,y1,x2,y2);
782.  	bhitpos.x = x1;
783.  	bhitpos.y = y1;
784.  	dx = sgn(x2 - x1);
785.  	dy = sgn(y2 - y1);
786.  	switch (style) {
787.  	    case ROLL:
788.  			delaycnt = 2;
789.  			/* fall through */
790.  	    default:
791.  			if (!delaycnt) delaycnt = 1;
792.  			if (!cansee(bhitpos.x,bhitpos.y)) curs_on_u();
793.  			tmp_at(DISP_FLASH, obj_to_glyph(singleobj));
794.  			tmp_at(bhitpos.x, bhitpos.y);
795.  	}
796.  	while(dist-- > 0 && !used_up) {
797.  		tmp_at(bhitpos.x, bhitpos.y);
798.  		tmp = delaycnt;
799.  		while (tmp-- > 0) delay_output();
800.  		bhitpos.x += dx;
801.  		bhitpos.y += dy;
802.  
803.  		if ((mtmp = m_at(bhitpos.x, bhitpos.y)) != 0) {
804.  			if (otyp == BOULDER && throws_rocks(mtmp->data)) {
805.  			    if (rn2(3)) {
806.  				pline("%s snatches the boulder.",
807.  					Monnam(mtmp));
808.  				mpickobj(mtmp, singleobj);
809.  				used_up = TRUE;
810.  				break;
811.  			    }
812.  			}
813.  			if (ohitmon(mtmp,singleobj,
814.  					(style==ROLL) ? -1 : dist, FALSE)) {
815.  				used_up = TRUE;
816.  				break;
817.  			}
818.  		} else if (bhitpos.x==u.ux && bhitpos.y==u.uy) {
819.  			int hitvalu, hitu;
820.  			if (multi) nomul(0);
821.  			hitvalu = 9 + singleobj->spe;
822.  			hitu = thitu(hitvalu,
823.  				dmgval(singleobj, &youmonst),
824.  				singleobj,
825.  				xname(singleobj));
826.  			if (hitu) stop_occupation();
827.  		}
828.  		if (style == ROLL) {
829.  		    if (down_gate(bhitpos.x, bhitpos.y) != -1) {
830.  		       if (ship_object(singleobj, bhitpos.x, bhitpos.y, FALSE)){
831.  				used_up = TRUE;
832.  				break;
833.  			}
834.  		    }
835.  		    if (flooreffects(singleobj, bhitpos.x, bhitpos.y, "fall")) {
836.  			used_up = TRUE;
837.  			break;
838.  		    }
839.  		}
840.  		if (otyp == BOULDER && closed_door(bhitpos.x,bhitpos.y)) {
841.  			if (cansee(bhitpos.x, bhitpos.y))
842.  				pline_The("boulder crashes through a door.");
843.  			levl[bhitpos.x][bhitpos.y].doormask = D_BROKEN;
844.  		}
845.  	}
846.  	tmp_at(DISP_END, 0);
847.  	if (!used_up) {
848.  		place_object(singleobj, x2,y2);
849.  		newsym(x2,y2);
850.  		return 1;
851.  	} else
852.  		return 2;
853.  }
854.  #endif /* OVL3 */
855.  #ifdef OVLB
856.  
857.  void
858.  seetrap(trap)
859.  	register struct trap *trap;
860.  {
861.  	if(!trap->tseen) {
862.  	    trap->tseen = 1;
863.  	    newsym(trap->tx, trap->ty);
864.  	}
865.  }
866.  
867.  #endif /* OVLB */
868.  #ifdef OVL3
869.  
870.  STATIC_OVL int
871.  mkroll_launch(ttmp, x, y, otyp, ocount)
872.  struct trap *ttmp;
873.  xchar x,y;
874.  short otyp;
875.  long ocount;
876.  {
877.  	struct obj *otmp;
878.  	register int tmp;
879.  	schar dx,dy;
880.  	int distance;
881.  	coord cc;
882.  	coord bcc;
883.  	int trycount = 0;
884.  	boolean success = FALSE;
885.  	int mindist = 4;
886.  
887.  	if (ttmp->ttyp == ROLLING_BOULDER_TRAP) mindist = 2;
888.  	distance = rn1(5,4);    /* 4..8 away */
889.  	tmp = rn2(8);		/* randomly pick a direction to try first */
890.  	while (distance >= mindist) {
891.  		dx = xdir[tmp];
892.  		dy = ydir[tmp];
893.  		cc.x = x; cc.y = y;
894.  		/* Prevent boulder from being placed on water */
895.  		if (ttmp->ttyp == ROLLING_BOULDER_TRAP
896.  				&& is_pool(x+distance*dx,y+distance*dy))
897.  			success = FALSE;
898.  		else success = isclearpath(&cc, distance, dx, dy);
899.  		if (ttmp->ttyp == ROLLING_BOULDER_TRAP) {
900.  			boolean success_otherway;
901.  			bcc.x = x; bcc.y = y;
902.  			success_otherway = isclearpath(&bcc, distance,
903.  						-(dx), -(dy));
904.  			if (!success_otherway) success = FALSE;
905.  		}
906.  		if (success) break;
907.  		if (++tmp > 7) tmp = 0;
908.  		if ((++trycount % 8) == 0) --distance;
909.  	}
910.  	if (!success) {
911.  	    /* create the trap without any ammo, launch pt at trap location */
912.  		cc.x = bcc.x = x;
913.  		cc.y = bcc.y = y;
914.  	} else {
915.  		otmp = mksobj(otyp, TRUE, FALSE);
916.  		otmp->quan = ocount;
917.  		otmp->owt = weight(otmp);
918.  		place_object(otmp, cc.x, cc.y);
919.  		stackobj(otmp);
920.  	}
921.  	ttmp->launch.x = cc.x;
922.  	ttmp->launch.y = cc.y;
923.  	if (ttmp->ttyp == ROLLING_BOULDER_TRAP) {
924.  		ttmp->launch2.x = bcc.x;
925.  		ttmp->launch2.y = bcc.y;
926.  	} else
927.  		ttmp->launch_otyp = otyp;
928.  	newsym(ttmp->launch.x, ttmp->launch.y);
929.  	return 1;
930.  }
931.  
932.  STATIC_OVL boolean
933.  isclearpath(cc,distance,dx,dy)
934.  coord *cc;
935.  int distance;
936.  schar dx,dy;
937.  {
938.  	uchar typ;
939.  	xchar x, y;
940.  
941.  	x = cc->x;
942.  	y = cc->y;
943.  	while (distance-- > 0) {
944.  		x += dx;
945.  		y += dy;
946.  		typ = levl[x][y].typ;
947.  		if (!isok(x,y) || !ZAP_POS(typ) || closed_door(x,y))
948.  			return FALSE;
949.  	}
950.  	cc->x = x;
951.  	cc->y = y;
952.  	return TRUE;
953.  }
954.  #endif /* OVL3 */
955.  #ifdef OVL1
956.  
957.  int
958.  mintrap(mtmp)
959.  register struct monst *mtmp;
960.  {
961.  	register struct trap *trap = t_at(mtmp->mx, mtmp->my);
962.  	boolean trapkilled = FALSE;
963.  	struct permonst *mptr = mtmp->data;
964.  	struct obj *otmp;
965.  
966.  	if(!trap) {
967.  		mtmp->mtrapped = 0;	/* perhaps teleported? */
968.  	} else if (mtmp->mtrapped) {	/* was in trap */
969.  		if(!rn2(40)) {
970.  			if (sobj_at(BOULDER, mtmp->mx, mtmp->my) &&
971.  			    ((trap->ttyp == PIT) ||
972.  			     (trap->ttyp == SPIKED_PIT))) {
973.  				if (!rn2(2)) {
974.  					mtmp->mtrapped = 0;
975.  					fill_pit(mtmp->mx, mtmp->my);
976.  				}
977.  			} else
978.  				mtmp->mtrapped = 0;
979.  		} else if (trap->ttyp == BEAR_TRAP && metallivorous(mptr)) {
980.  			if (canseemon(mtmp))
981.  			    pline("%s eats a bear trap!", Monnam(mtmp));
982.  			deltrap(trap);
983.  			mtmp->meating = 5;
984.  			mtmp->mtrapped = 0;
985.  		}
986.  	} else {
987.  	    register int tt = trap->ttyp;
988.  	    boolean in_sight, tear_web, see_it;
989.  
990.  	    if ((mtmp->mtrapseen & (1 << (tt-1))) != 0 ||
991.  		    (tt == HOLE && !mindless(mtmp->data))) {
992.  		/* it has been in such a trap - perhaps it escapes */
993.  		if(rn2(4)) return(0);
994.  	    } else {
995.  		mtmp->mtrapseen |= (1 << (tt-1));
996.  	    }
997.  	    /* Monster is aggravated by being trapped by you.
998.  	       Recognizing who made the trap isn't completely
999.  	       unreasonable; everybody has their own style. */
1000. 	    if (trap->madeby_u && rnl(5)) setmangry(mtmp);
1001. 
1002. 	    /* bug?  `in_sight' ought to be split to distinguish between
1003. 	       trap_in_sight and can_see_victim to handle invisible monsters */
1004. 	    in_sight = canseemon(mtmp);
1005. 	    switch (tt) {
1006. 		case ARROW_TRAP:
1007. 			otmp = mksobj(ARROW, TRUE, FALSE);
1008. 			otmp->quan = 1L;
1009. 			otmp->owt = weight(otmp);
1010. 			if (in_sight) seetrap(trap);
1011. 			if(thitm(8, mtmp, otmp, 0)) trapkilled = TRUE;
1012. 			break;
1013. 		case DART_TRAP:
1014. 			otmp = mksobj(DART, TRUE, FALSE);
1015. 			otmp->quan = 1L;
1016. 			otmp->owt = weight(otmp);
1017. 			if (!rn2(6)) otmp->opoisoned = 1;
1018. 			if (in_sight) seetrap(trap);
1019. 			if(thitm(7, mtmp, otmp, 0)) trapkilled = TRUE;
1020. 			break;
1021. 		case ROCKTRAP:
1022. 			otmp = mksobj(ROCK, TRUE, FALSE);
1023. 			otmp->quan = 1L;
1024. 			otmp->owt = weight(otmp);
1025. 			if (in_sight) seetrap(trap);
1026. 			if (is_whirly(mptr) || passes_walls(mptr)) {
1027. 			    if (in_sight)
1028. 				pline("A rock falls harmlessly through %s.",
1029. 				      mon_nam(mtmp));
1030. 			    else if (cansee(mtmp->mx, mtmp->my))
1031. 				pline("A rock falls to the %s.",
1032. 				      surface(mtmp->mx, mtmp->my));
1033. 			    place_object(otmp, mtmp->mx, mtmp->my);
1034. 			    stackobj(otmp);
1035. 			} else if (thitm(0, mtmp, otmp, d(2, 6)))
1036. 			    trapkilled = TRUE;
1037. 			break;
1038. 
1039. 		case SQKY_BOARD:
1040. 			if(is_flyer(mptr)) break;
1041. 			/* stepped on a squeaky board */
1042. 			if (in_sight) {
1043. 			    pline("A board beneath %s squeaks loudly.", mon_nam(mtmp));
1044. 			    seetrap(trap);
1045. 			} else
1046. 			   You_hear("a distant squeak.");
1047. 			/* wake up nearby monsters */
1048. 			wake_nearto(mtmp->mx, mtmp->my, 40);
1049. 			break;
1050. 
1051. 		case BEAR_TRAP:
1052. 			if(mptr->msize > MZ_SMALL &&
1053. 				!amorphous(mptr) && !is_flyer(mptr) &&
1054. 				!is_whirly(mptr) && !unsolid(mptr)) {
1055. 			    mtmp->mtrapped = 1;
1056. 			    if(in_sight) {
1057. 				pline("%s is caught in %s bear trap!",
1058. 				      Monnam(mtmp), a_your[trap->madeby_u]);
1059. 				seetrap(trap);
1060. 			    } else {
1061. 				if((mptr == &mons[PM_OWLBEAR]
1062. 				    || mptr == &mons[PM_BUGBEAR])
1063. 				   && flags.soundok)
1064. 				    You_hear("the roaring of an angry bear!");
1065. 			    }
1066. 			}
1067. 			break;
1068. 
1069. 		case SLP_GAS_TRAP:
1070. 			if (!resists_sleep(mtmp) &&
1071. 				!mtmp->msleep && mtmp->mcanmove) {
1072. 			    mtmp->mcanmove = 0;
1073. 			    mtmp->mfrozen = rnd(25);
1074. 			    if (in_sight) {
1075. 				pline("%s suddenly falls asleep!",
1076. 				      Monnam(mtmp));
1077. 				seetrap(trap);
1078. 			    }
1079. 			}
1080. 			break;
1081. 
1082. 		case RUST_TRAP:
1083. 			if (in_sight) {
1084. 			    pline("%s %s!", A_gush_of_water_hits,
1085. 				  mon_nam(mtmp));
1086. 			    seetrap(trap);
1087. 			}
1088. 			if (mptr == &mons[PM_IRON_GOLEM]) {
1089. 				if (in_sight)
1090. 				    pline("%s falls to pieces!", Monnam(mtmp));
1091. 				else if(mtmp->mtame)
1092. 				    pline("May %s rust in peace.",
1093. 								mon_nam(mtmp));
1094. 				mondied(mtmp);
1095. 				if (mtmp->mhp <= 0)
1096. 					trapkilled = TRUE;
1097. 			} else if (mptr == &mons[PM_GREMLIN] && rn2(3)) {
1098. 				struct monst *mtmp2 = clone_mon(mtmp);
1099. 
1100. 				if (mtmp2) {
1101. 				    mtmp2->mhpmax = (mtmp->mhpmax /= 2);
1102. 				    if(in_sight)
1103. 					pline("%s multiplies.", Monnam(mtmp));
1104. 				}
1105. 			}
1106. 			if (rn2(2))
1107. 			    for (otmp = mtmp->minvent; otmp; otmp = otmp->nobj)
1108. 				(void) snuff_lit(otmp);
1109. 			break;
1110. 
1111. 		case FIRE_TRAP:
1112.  mfiretrap:
1113. 			see_it = cansee(mtmp->mx, mtmp->my);
1114. 			if (in_sight)
1115. 			    pline("A %s erupts from the %s under %s!",
1116. 				  tower_of_flame,
1117. 				  surface(mtmp->mx,mtmp->my), mon_nam(mtmp));
1118. 			else if (see_it)  /* evidently `mtmp' is invisible */
1119. 			    You("see a %s erupt from the %s!",
1120. 				tower_of_flame, surface(mtmp->mx,mtmp->my));
1121. 
1122. 			if (resists_fire(mtmp)) {
1123. 			    if (in_sight) {
1124. 				shieldeff(mtmp->mx,mtmp->my);
1125. 				pline("%s is uninjured.", Monnam(mtmp));
1126. 			    }
1127. 			} else {
1128. 			    int num = d(2,4);
1129. 
1130. 			    if (thitm(0, mtmp, (struct obj *)0, num))
1131. 				trapkilled = TRUE;
1132. 			    else
1133. 				/* we know mhp is at least `num' below mhpmax,
1134. 				   so no (mhp > mhpmax) check is needed here */
1135. 				mtmp->mhpmax -= rn2(num + 1);
1136. 			}
1137. 			(void) destroy_mitem(mtmp, SCROLL_CLASS, AD_FIRE);
1138. 			(void) destroy_mitem(mtmp, SPBOOK_CLASS, AD_FIRE);
1139. 			(void) destroy_mitem(mtmp, POTION_CLASS, AD_FIRE);
1140. 			if (burn_floor_paper(mtmp->mx, mtmp->my, see_it) &&
1141. 				!see_it && distu(mtmp->mx, mtmp->my) <= 3*3)
1142. 			    You("smell smoke.");
1143. 			if (is_ice(mtmp->mx,mtmp->my))
1144. 			    melt_ice(mtmp->mx,mtmp->my);
1145. 			if (see_it) seetrap(trap);
1146. 			break;
1147. 
1148. 		case PIT:
1149. 		case SPIKED_PIT:
1150. 			if ( !is_flyer(mptr) &&
1151. 			     (!mtmp->wormno || (count_wsegs(mtmp) < 6)) &&
1152. 			     !is_clinger(mptr) ) {
1153. 				if (!passes_walls(mptr))
1154. 				    mtmp->mtrapped = 1;
1155. 				if(in_sight) {
1156. 				    pline("%s falls into %s pit!",
1157. 					Monnam(mtmp), a_your[trap->madeby_u]);
1158. 				    seetrap(trap);
1159. 				}
1160. 				mselftouch(mtmp, "Falling, ", FALSE);
1161. 				if(mtmp->mhp <= 0 ||
1162. 					thitm(0, mtmp, (struct obj *)0,
1163. 					 rnd((tt==PIT) ? 6 : 10)))
1164. 				    trapkilled = TRUE;
1165. 			}
1166. 			break;
1167. 		case HOLE:
1168. 		case TRAPDOOR:
1169. 			if(!Can_fall_thru(&u.uz))
1170. 			 panic("Holes & trapdoors cannot exist on this level.");
1171. 
1172. 			if (is_flyer(mptr) || mptr == &mons[PM_WUMPUS] ||
1173. 			    (mtmp->wormno && count_wsegs(mtmp) > 5) ||
1174. 			    mptr->msize >= MZ_HUGE) break;
1175. 			/* Fall through */
1176. 		case LEVEL_TELEP:
1177. 		case MAGIC_PORTAL:
1178. 			{
1179. 			    int mlev_res;
1180. 			    mlev_res = mlevel_tele_trap(mtmp, trap, in_sight);
1181. 			    if (mlev_res) return(mlev_res);
1182. 			}
1183. 			break;
1184. 
1185. 		case TELEP_TRAP:
1186. 			mtele_trap(mtmp, trap, in_sight);
1187. 			break;
1188. 
1189. 		case WEB:
1190. 			/* Monster in a web. */
1191. 			if (mptr->mlet == S_SPIDER) break;
1192. 			if (amorphous(mptr) || is_whirly(mptr) || unsolid(mptr)){
1193. 			    if(acidic(mptr) ||
1194. 			       mptr == &mons[PM_GELATINOUS_CUBE] ||
1195. 			       mptr == &mons[PM_FIRE_ELEMENTAL]) {
1196. 				if (in_sight)
1197. 				    pline("%s %s %s spider web!",
1198. 					  Monnam(mtmp),
1199. 					  (mptr == &mons[PM_FIRE_ELEMENTAL]) ?
1200. 					    "burns" : "dissolves",
1201. 					  a_your[trap->madeby_u]);
1202. 				deltrap(trap);
1203. 				newsym(mtmp->mx, mtmp->my);
1204. 				break;
1205. 			    }
1206. 			    if (in_sight) {
1207. 				pline("%s flows through %s spider web.",
1208. 				      Monnam(mtmp),
1209. 				      a_your[trap->madeby_u]);
1210. 				seetrap(trap);
1211. 			    }
1212. 			    break;
1213. 			}
1214. 			tear_web = FALSE;
1215. 			switch (monsndx(mptr)) {
1216. 			    case PM_OWLBEAR: /* Eric Backus */
1217. 			    case PM_BUGBEAR:
1218. 				if (!in_sight) {
1219. 				    You_hear("the roaring of a confused bear!");
1220. 				    mtmp->mtrapped = 1;
1221. 				    break;
1222. 				}
1223. 				/* fall though */
1224. 			    default:
1225. 				if (mptr->mlet == S_GIANT ||
1226. 				    (mptr->mlet == S_DRAGON &&
1227. 					extra_nasty(mptr)) || /* excl. babies */
1228. 				    (mtmp->wormno && count_wsegs(mtmp) > 5)) {
1229. 				    tear_web = TRUE;
1230. 				} else if (in_sight) {
1231. 				    pline("%s is caught in %s spider web.",
1232. 					  Monnam(mtmp),
1233. 					  a_your[trap->madeby_u]);
1234. 				    seetrap(trap);
1235. 				}
1236. 				mtmp->mtrapped = tear_web ? 0 : 1;
1237. 				break;
1238. 			    /* this list is fairly arbitrary; it deliberately
1239. 			       excludes wumpus & giant/ettin zombies/mummies */
1240. 			    case PM_TITANOTHERE:
1241. 			    case PM_BALUCHITHERIUM:
1242. 			    case PM_PURPLE_WORM:
1243. 			    case PM_JABBERWOCK:
1244. 			    case PM_IRON_GOLEM:
1245. 			    case PM_BALROG:
1246. 			    case PM_KRAKEN:
1247. 				tear_web = TRUE;
1248. 				break;
1249. 			}
1250. 			if (tear_web) {
1251. 			    if (in_sight)
1252. 				pline("%s tears through %s spider web!",
1253. 				      Monnam(mtmp), a_your[trap->madeby_u]);
1254. 			    deltrap(trap);
1255. 			    newsym(mtmp->mx, mtmp->my);
1256. 			}
1257. 			break;
1258. 
1259. 		case STATUE_TRAP:
1260. 			break;
1261. 
1262. 		case MAGIC_TRAP:
1263. 			/* A magic trap.  Monsters usually immune. */
1264. 			if (!rn2(21)) goto mfiretrap;
1265. 			break;
1266. 		case ANTI_MAGIC:
1267. 			break;
1268. 
1269. 		case LANDMINE:
1270. 			if(rn2(3))
1271. 				break; /* monsters usually don't set it off */
1272. 			if(is_flyer(mptr)) {
1273. 				boolean already_seen = trap->tseen;
1274. 				if (in_sight && !already_seen) {
1275. 	pline("A trigger appears in a pile of soil below %s.", mon_nam(mtmp));
1276. 					seetrap(trap);
1277. 				}
1278. 				if (rn2(3)) break;
1279. 				if (in_sight) {
1280. 					newsym(mtmp->mx, mtmp->my);
1281. 					pline_The("air currents set %s off!",
1282. 					  already_seen ? "a land mine" : "it");
1283. 				}
1284. 			} else if(in_sight) {
1285. 			    newsym(mtmp->mx, mtmp->my);
1286. 			    pline("KAABLAMM!!!  %s triggers %s land mine!",
1287. 				Monnam(mtmp), a_your[trap->madeby_u]);
1288. 			}
1289. 			if (!in_sight)
1290. 				pline("Kaablamm!  You hear an explosion in the distance!");
1291. 			scatter(mtmp->mx, mtmp->my, 4,
1292. 				MAY_DESTROY | MAY_HIT | MAY_FRACTURE | VIS_EFFECTS);
1293. 			del_engr_at(mtmp->mx, mtmp->my);
1294. 			if (IS_DOOR(levl[mtmp->mx][mtmp->my].typ))
1295. 				levl[mtmp->mx][mtmp->my].doormask = D_BROKEN;
1296. 
1297. 			trap->ttyp = PIT;       /* explosion creates a pit */
1298. 			trap->madeby_u = FALSE; /* resulting pit isn't yours */
1299. 			if(thitm(0, mtmp, (struct obj *)0, rnd(16)))
1300. 				trapkilled = TRUE;
1301. 			else {
1302. 				/* monsters recursively fall into new pit */
1303. 				if (mintrap(mtmp) == 2) trapkilled=TRUE;
1304. 			}
1305. 			wake_nearto(mtmp->mx, mtmp->my, 500);
1306. 			if (unconscious()) {
1307. 				multi = -1;
1308. 				nomovemsg="The explosion awakens you!";
1309. 			}
1310. 			break;
1311. 
1312. 		case POLY_TRAP:
1313. 		    if (resists_magm(mtmp)) {
1314. 			shieldeff(mtmp->mx, mtmp->my);
1315. 		    } else if (!resist(mtmp, WAND_CLASS, 0, NOTELL)) {
1316. 			(void) newcham(mtmp, (struct permonst *)0);
1317. 			if (in_sight) seetrap(trap);
1318. 		    }
1319. 		    break;
1320. 
1321. 		case ROLLING_BOULDER_TRAP:
1322. 		    newsym(mtmp->mx,mtmp->my);
1323. 		    if (in_sight)
1324. 			pline("Click! %s triggers %s.", Monnam(mtmp),
1325. 				trap->tseen ?
1326. 				"a rolling boulder trap" :
1327. 				something);
1328. 		    if (launch_obj(BOULDER, trap->launch.x, trap->launch.y,
1329. 				   trap->launch2.x, trap->launch2.y, ROLL)) {
1330. 			if (in_sight) trap->tseen = TRUE;
1331. 			else You_hear(Hallucination ?
1332. 					"someone bowling." :
1333. 					"rumbling in the distance.");
1334. 			if (mtmp->mhp <= 0) trapkilled = TRUE;
1335. 		    } else {
1336. 			deltrap(trap);
1337. 			newsym(mtmp->mx,mtmp->my);
1338. 		    }
1339. 		    break;
1340. 
1341. 		default:
1342. 			impossible("Some monster encountered a strange trap of type %d.", tt);
1343. 	    }
1344. 	}
1345. 	if(trapkilled) return 2;
1346. 	return mtmp->mtrapped;
1347. }
1348. 
1349. #endif /* OVL1 */
1350. #ifdef OVLB
1351. 
1352. /* Combine cockatrice checks into single functions to avoid repeating code. */
1353. void
1354. instapetrify(str)
1355. const char *str;
1356. {
1357. 	if (resists_ston(&youmonst)) return;
1358. 	if (poly_when_stoned(uasmon) && polymon(PM_STONE_GOLEM))
1359. 	    return;
1360. 	You("turn to stone...");
1361. 	killer_format = KILLED_BY;
1362. 	killer = str;
1363. 	done(STONING);
1364. }
1365. 
1366. void
1367. minstapetrify(mon,byplayer)
1368. struct monst *mon;
1369. boolean byplayer;
1370. {
1371. 	if (resists_ston(mon)) return;
1372. 	if (cansee(mon->mx, mon->my))
1373. 		pline("%s turns to stone.", Monnam(mon));
1374. 	if (poly_when_stoned(mon->data)) {
1375. 		mon_to_stone(mon);
1376. 		return;
1377. 	}
1378. 	if (byplayer) {
1379. 		stoned = TRUE;
1380. 		xkilled(mon,0);
1381. 	} else monstone(mon);
1382. }
1383. 
1384. void
1385. selftouch(arg)
1386. const char *arg;
1387. {
1388. 	if (uwep && uwep->otyp == CORPSE && uwep->corpsenm == PM_COCKATRICE) {
1389. 		pline("%s touch the cockatrice corpse.", arg);
1390. 		instapetrify("cockatrice corpse");
1391. 	}
1392. }
1393. 
1394. void
1395. mselftouch(mon,arg,byplayer)
1396. struct monst *mon;
1397. const char *arg;
1398. boolean byplayer;
1399. {
1400. 	struct obj *mwep = MON_WEP(mon);
1401. 
1402. 	if (mwep && mwep->otyp == CORPSE && mwep->corpsenm == PM_COCKATRICE) {
1403. 		if (cansee(mon->mx, mon->my)) {
1404. 			pline("%s%s touches the cockatrice corpse.",
1405. 			    arg ? arg : "", arg ? mon_nam(mon) : Monnam(mon));
1406. 		}
1407. 		minstapetrify(mon, byplayer);
1408. 	}
1409. }
1410. 
1411. void
1412. float_up()
1413. {
1414. 	if(u.utrap) {
1415. 		if(u.utraptype == TT_PIT) {
1416. 			u.utrap = 0;
1417. 			You("float up, out of the pit!");
1418. 			vision_full_recalc = 1;	/* vision limits change */
1419. 			fill_pit(u.ux, u.uy);
1420. 		} else if (u.utraptype == TT_INFLOOR) {
1421. 			Your("body pulls upward, but your %s are still stuck.",
1422. 			     makeplural(body_part(LEG)));
1423. 		} else {
1424. 			You("float up, only your %s is still stuck.",
1425. 				body_part(LEG));
1426. 		}
1427. 	}
1428. 	else if(Is_waterlevel(&u.uz))
1429. 		pline("It feels as though you'd lost some weight.");
1430. 	else if(u.uinwater)
1431. 		spoteffects();
1432. 	else if(u.uswallow)
1433. 		You(is_animal(u.ustuck->data) ?
1434. 			"float away from the %s."  :
1435. 			"spiral up into %s.",
1436. 		    is_animal(u.ustuck->data) ?
1437. 			surface(u.ux, u.uy) :
1438. 			mon_nam(u.ustuck));
1439. 	else if (Hallucination)
1440. 		pline("Up, up, and awaaaay!  You're walking on air!");
1441. 	else if(Is_airlevel(&u.uz))
1442. 		You("gain control over your movements.");
1443. 	else
1444. 		You("start to float in the air!");
1445. }
1446. 
1447. void
1448. fill_pit(x, y)
1449. int x, y;
1450. {
1451. 	struct obj *otmp;
1452. 	struct trap *t;
1453. 
1454. 	if ((t = t_at(x, y)) &&
1455. 	    ((t->ttyp == PIT) || (t->ttyp == SPIKED_PIT)) &&
1456. 	    (otmp = sobj_at(BOULDER, x, y))) {
1457. 		obj_extract_self(otmp);
1458. 		(void) flooreffects(otmp, x, y, "settle");
1459. 	}
1460. }
1461. 
1462. int
1463. float_down(override_mask)
1464. long override_mask;	/* might cancel timeout */
1465. {
1466. 	register struct trap *trap = (struct trap *)0;
1467. 	d_level current_dungeon_level;
1468. 	boolean no_msg = FALSE;
1469. 
1470. 	HLevitation &= ~override_mask;
1471. 	if(Levitation) return(0); /* maybe another ring/potion/boots */
1472. 
1473. 	if (Punished && !carried(uball) &&
1474. 	    (is_pool(uball->ox, uball->oy) ||
1475. 	     ((trap = t_at(uball->ox, uball->oy)) &&
1476. 	      ((trap->ttyp == PIT) || (trap->ttyp == SPIKED_PIT) ||
1477. 	       (trap->ttyp == TRAPDOOR) || (trap->ttyp == HOLE))))) {
1478. 			u.ux0 = u.ux;
1479. 			u.uy0 = u.uy;
1480. 			u.ux = uball->ox;
1481. 			u.uy = uball->oy;
1482. 			movobj(uchain, uball->ox, uball->oy);
1483. 			newsym(u.ux0, u.uy0);
1484. 			vision_full_recalc = 1;	/* in case the hero moved. */
1485. 	}
1486. 	/* check for falling into pool - added by GAN 10/20/86 */
1487. 	if(!is_flyer(uasmon)) {
1488. 		/* kludge alert:
1489. 		 * drown() and lava_effects() print various messages almost
1490. 		 * every time they're called which conflict with the "fall
1491. 		 * into" message below.  Thus, we want to avoid printing
1492. 		 * confusing, duplicate or out-of-order messages.
1493. 		 * Use knowledge of the two routines as a hack -- this
1494. 		 * should really handled differently -dlc
1495. 		 */
1496. 		if(is_pool(u.ux,u.uy) && !Wwalking && !u.uinwater)
1497. 			no_msg = drown();
1498. 
1499. 		if(is_lava(u.ux,u.uy)) {
1500. 			(void) lava_effects();
1501. 			no_msg = TRUE;
1502. 		}
1503. 	}
1504. 	if (!trap) {
1505. 		if(Is_airlevel(&u.uz))
1506. 			You("begin to tumble in place.");
1507. 		else if (Is_waterlevel(&u.uz) && !no_msg)
1508. 			You_feel("heavier.");
1509. 		/* u.uinwater msgs already in spoteffects()/drown() */
1510. 		else if (!u.uinwater && !no_msg) {
1511. 			if (Hallucination)
1512. 				pline("Bummer!  You've %s.",
1513. 				      is_pool(u.ux,u.uy) ?
1514. 					"splashed down" : "hit the ground");
1515. 			else
1516. 				You("float gently to the %s.",
1517. 				    surface(u.ux, u.uy));
1518. 		}
1519. 		trap = t_at(u.ux,u.uy);
1520. 	}
1521. 
1522. 	/* can't rely on u.uz0 for detecting trap door-induced level change;
1523. 	   it gets changed to reflect the new level before we can check it */
1524. 	assign_level(&current_dungeon_level, &u.uz);
1525. 
1526. 	if(trap)
1527. 		switch(trap->ttyp) {
1528. 		case STATUE_TRAP:
1529. 			break;
1530. 		case HOLE:
1531. 		case TRAPDOOR:
1532. 			if(!Can_fall_thru(&u.uz) || u.ustuck)
1533. 				break;
1534. 			/* fall into next case */
1535. 		default:
1536. 			dotrap(trap);
1537. 	}
1538. 
1539. 	if (!Is_airlevel(&u.uz) && !Is_waterlevel(&u.uz) && !u.uswallow &&
1540. 		/* falling through trap door calls goto_level,
1541. 		   and goto_level does its own pickup() call */
1542. 		on_level(&u.uz, &current_dungeon_level))
1543. 	    pickup(1);
1544. 	return 1;
1545. }
1546. 
1547. STATIC_OVL void
1548. dofiretrap(box)
1549. struct obj *box;	/* null for floor trap */
1550. {
1551. 	boolean see_it = !Blind;
1552. 	int num;
1553. 
1554. 	if ((box && !carried(box)) ? is_pool(box->ox, box->oy) : Underwater) {
1555. 	    pline("A cascade of steamy bubbles erupts from %s!",
1556. 		    the(box ? xname(box) : surface(u.ux,u.uy)));
1557. 	    if (Fire_resistance) You("are uninjured.");
1558. 	    else losehp(rnd(3), "boiling water", KILLED_BY);
1559. 	    return;
1560. 	}
1561. 	pline("A %s %s from %s!", tower_of_flame,
1562. 	      box ? "bursts" : "erupts",
1563. 	      the(box ? xname(box) : surface(u.ux,u.uy)));
1564. 	if (Fire_resistance) {
1565. 	    shieldeff(u.ux, u.uy);
1566. 	    num = rn2(2);
1567. 	} else {
1568. 	    num = d(2,4);
1569. 	    if (u.uhpmax > u.ulevel)
1570. 		u.uhpmax -= rn2(min(u.uhpmax,num + 1)), flags.botl = 1;
1571. 	}
1572. 	if (!num)
1573. 	    You("are uninjured.");
1574. 	else
1575. 	    losehp(num, tower_of_flame, KILLED_BY_AN);
1576. 
1577. 	if (burnarmor() || rn2(3)) {
1578. 	    destroy_item(SCROLL_CLASS, AD_FIRE);
1579. 	    destroy_item(SPBOOK_CLASS, AD_FIRE);
1580. 	    destroy_item(POTION_CLASS, AD_FIRE);
1581. 	}
1582. 	if (!box && burn_floor_paper(u.ux, u.uy, see_it) && !see_it)
1583. 	    You("smell paper burning.");
1584. 	if (is_ice(u.ux, u.uy))
1585. 	    melt_ice(u.ux, u.uy);
1586. }
1587. 
1588. STATIC_OVL void
1589. domagictrap()
1590. {
1591. 	register int fate = rnd(20);
1592. 
1593. 	/* What happened to the poor sucker? */
1594. 
1595. 	if (fate < 10) {
1596. 
1597. 	  /* Most of the time, it creates some monsters. */
1598. 	  register int cnt = rnd(4);
1599. 
1600. 	  /* below checks for blindness added by GAN 10/30/86 */
1601. 	  if (!Blind)  {
1602. 		You("are momentarily blinded by a flash of light!");
1603. 		make_blinded((long)rn1(5,10),FALSE);
1604. 	  }  else
1605. 		You_hear("a deafening roar!");
1606. 	  while(cnt--)
1607. 		(void) makemon((struct permonst *) 0, u.ux, u.uy);
1608. 	}
1609. 	else
1610. 	  switch (fate) {
1611. 
1612. 	     case 10:
1613. 	     case 11:
1614. 		      /* sometimes nothing happens */
1615. 			break;
1616. 	     case 12: /* a flash of fire */
1617. 			dofiretrap((struct obj *)0);
1618. 			break;
1619. 
1620. 	     /* odd feelings */
1621. 	     case 13:	pline("A shiver runs up and down your %s!",
1622. 			      body_part(SPINE));
1623. 			break;
1624. 	     case 14:	You_hear(Hallucination ?
1625. 				"the moon howling at you." :
1626. 				"distant howling.");
1627. 			break;
1628. 	     case 15:	if (on_level(&u.uz, &qstart_level))
1629. 			    You_feel("%slike the prodigal son.",
1630. 			      (flags.female || (Upolyd && is_neuter(uasmon))) ?
1631. 				     "oddly " : "");
1632. 			else
1633. 			    You("suddenly yearn for %s.",
1634. 				Hallucination ? "Cleveland" :
1635. 			    (In_quest(&u.uz) || at_dgn_entrance("The Quest")) ?
1636. 						"your nearby homeland" :
1637. 						"your distant homeland");
1638. 			break;
1639. 	     case 16:   Your("pack shakes violently!");
1640. 			break;
1641. 	     case 17:	You(Hallucination ?
1642. 				"smell hamburgers." :
1643. 				"smell charred flesh.");
1644. 			break;
1645. 	     case 18:	You_feel("tired.");
1646. 			break;
1647. 
1648. 	     /* very occasionally something nice happens. */
1649. 
1650. 	     case 19:
1651. 		    /* tame nearby monsters */
1652. 		   {   register int i,j;
1653. 		       register struct monst *mtmp;
1654. 
1655. 		       (void) adjattrib(A_CHA,1,FALSE);
1656. 		       for(i = -1; i <= 1; i++) for(j = -1; j <= 1; j++) {
1657. 			   if(!isok(u.ux+i, u.uy+j)) continue;
1658. 			   mtmp = m_at(u.ux+i, u.uy+j);
1659. 			   if(mtmp)
1660. 			       (void) tamedog(mtmp, (struct obj *)0);
1661. 		       }
1662. 		       break;
1663. 		   }
1664. 
1665. 	     case 20:
1666. 		    /* uncurse stuff */
1667. 		   {  register struct obj *obj;
1668. 
1669. 			/* below plines added by GAN 10/30/86 */
1670. 			You_feel(Hallucination ?
1671. 				"in touch with the Universal Oneness." :
1672. 				"like someone is helping you.");
1673. 			for(obj = invent; obj ; obj = obj->nobj)
1674. 			       if(obj->owornmask || obj->otyp == LOADSTONE)
1675. 					uncurse(obj);
1676. 		       if(Punished) unpunish();
1677. 		       break;
1678. 		   }
1679. 	     default: break;
1680. 	  }
1681. }
1682. 
1683. void
1684. water_damage(obj, force, here)
1685. register struct obj *obj;
1686. register boolean force, here;
1687. {
1688. 	/* Scrolls, spellbooks, potions, weapons and
1689. 	   pieces of armor may get affected by the water */
1690. 	for (; obj; obj = (here ? obj->nexthere : obj->nobj)) {
1691. 
1692. 		(void) snuff_lit(obj);
1693. 
1694. 		if(obj->greased) {
1695. 			if (force || !rn2(2)) obj->greased = 0;
1696. 		} else if(Is_container(obj) && !Is_box(obj) &&
1697. 			(obj->otyp != OILSKIN_SACK || (obj->cursed && !rn2(3)))) {
1698. 			water_damage(obj->cobj, force, FALSE);
1699. 		} else if (!force && (Luck + 5) > rn2(20)) {
1700. 			/*  chance per item of sustaining damage:
1701. 			 *	max luck (full moon):	 5%
1702. 			 *	max luck (elsewhen):	10%
1703. 			 *	avg luck (Luck==0):	75%
1704. 			 *	awful luck (Luck<-4):  100%
1705. 			 */
1706. 			continue;
1707. 		} else if (obj->oclass == SCROLL_CLASS) {
1708. #ifdef MAIL
1709. 		    if (obj->otyp != SCR_MAIL)
1710. #endif
1711. 			obj->otyp = SCR_BLANK_PAPER;
1712. 			obj->spe = 0;
1713. 		} else if (obj->oclass == SPBOOK_CLASS) {
1714. 			if (obj->otyp == SPE_BOOK_OF_THE_DEAD)
1715. 				pline("Steam rises from %s.", the(xname(obj)));
1716. 			else obj->otyp = SPE_BLANK_PAPER;
1717. 		} else if (obj->oclass == POTION_CLASS) {
1718. 			if (obj->odiluted) {
1719. 				obj->otyp = POT_WATER;
1720. 				obj->blessed = obj->cursed = 0;
1721. 				obj->odiluted = 0;
1722. 			} else if (obj->otyp != POT_WATER ||
1723. 				   obj->blessed || obj->cursed)
1724. 				obj->odiluted++;
1725. 		} else if (is_rustprone(obj) && obj->oeroded < MAX_ERODE &&
1726. 			  !(obj->oerodeproof || (obj->blessed && !rnl(4)))) {
1727. 			/* all metal stuff and armor except (body armor
1728. 			   protected by oilskin cloak) */
1729. 			if(obj->oclass != ARMOR_CLASS || obj != uarm ||
1730. 			   !uarmc || uarmc->otyp != OILSKIN_CLOAK ||
1731. 			   (uarmc->cursed && !rn2(3)))
1732. 				obj->oeroded++;
1733. 		}
1734. 	}
1735. }
1736. 
1737. /*
1738.  * This function is potentially expensive - rolling
1739.  * inventory list multiple times.  Luckily it's seldom needed.
1740.  * Returns TRUE if disrobing made player unencumbered enough to
1741.  * crawl out of the current predicament.
1742.  */
1743. STATIC_OVL boolean
1744. emergency_disrobe(lostsome)
1745. boolean *lostsome;
1746. {
1747. 	int invc = inv_cnt();
1748. 
1749. 	while (near_capacity() > (Punished ? UNENCUMBERED : SLT_ENCUMBER)) {
1750. 		register struct obj *obj, *otmp = (struct obj *)0;
1751. 		register int i = rn2(invc);
1752. 
1753. 		for (obj = invent; obj; obj = obj->nobj) {
1754. 			/*
1755. 			 * Undroppables are: body armor, boots, gloves,
1756. 			 * amulets, and rings because of the time and effort
1757. 			 * in removing them + loadstone and other cursed stuff
1758. 			 * for obvious reasons.
1759. 			 */
1760. 			if (!((obj->otyp == LOADSTONE && obj->cursed) ||
1761. 			      obj == uamul || obj == uleft || obj == uright ||
1762. 			      obj == ublindf || obj == uarm || obj == uarmc ||
1763. 			      obj == uarmg || obj == uarmf ||
1764. #ifdef TOURIST
1765. 			      obj == uarmu ||
1766. #endif
1767. 			      (obj->cursed && (obj == uarmh || obj == uarms)) ||
1768. 			      welded(obj)))
1769. 				otmp = obj;
1770. 			/* reached the mark and found some stuff to drop? */
1771. 			if (--i < 0 && otmp) break;
1772. 
1773. 			/* else continue */
1774. 		}
1775. 
1776. 		/* nothing to drop and still overweight */
1777. 		if (!otmp) return(FALSE);
1778. 
1779. 		if (otmp == uarmh) (void) Helmet_off();
1780. 		else if (otmp == uarms) (void) Shield_off();
1781. 		else if (otmp == uwep) setuwep((struct obj *)0);
1782. 		*lostsome = TRUE;
1783. 		dropx(otmp);
1784. 		invc--;
1785. 	}
1786. 	return(TRUE);
1787. }
1788. 
1789. /*
1790.  *  return(TRUE) == player relocated
1791.  */
1792. boolean
1793. drown()
1794. {
1795. 	boolean inpool_ok = FALSE, crawl_ok;
1796. 	int i, x, y;
1797. 
1798. 	/* happily wading in the same contiguous pool */
1799. 	if (u.uinwater && is_pool(u.ux-u.dx,u.uy-u.dy) &&
1800. 	    (is_swimmer(uasmon) || Amphibious)) {
1801. 		/* water effects on objects every now and then */
1802. 		if (!rn2(5)) inpool_ok = TRUE;
1803. 		else return(FALSE);
1804. 	}
1805. 
1806. 	if (!u.uinwater) {
1807. 	    You("%s into the water%c",
1808. 		Is_waterlevel(&u.uz) ? "plunge" : "fall",
1809. 		Amphibious ? '.' : '!');
1810. 	    if(!is_swimmer(uasmon))
1811. 		if (!Is_waterlevel(&u.uz))
1812. 		    You("sink like %s.",
1813. 			Hallucination ? "the Titanic" : "a rock");
1814. 	}
1815. 
1816. 	water_damage(invent, FALSE, FALSE);
1817. 
1818. 	if(u.umonnum == PM_GREMLIN && rn2(3)) {
1819. 		struct monst *mtmp;
1820. 		if ((mtmp = cloneu()) != 0) {
1821. 			mtmp->mhpmax = (u.mhmax /= 2);
1822. 			You("multiply.");
1823. 		}
1824. 	}
1825. 	if (inpool_ok) return(FALSE);
1826. 
1827. 	if ((i = number_leashed()) > 0) {
1828. 		pline_The("leash%s slip%s loose.",
1829. 			(i > 1) ? "es" : "",
1830. 			(i > 1) ? "" : "s");
1831. 		unleash_all();
1832. 	}
1833. 
1834. 	if (Amphibious || is_swimmer(uasmon)) {
1835. 		if (Amphibious) {
1836. 			if (flags.verbose)
1837. 				pline("But you aren't drowning.");
1838. 			if (!Is_waterlevel(&u.uz))
1839. 				if (Hallucination)
1840. 					Your("keel hits the bottom.");
1841. 				else
1842. 					You("touch bottom.");
1843. 		}
1844. 		if (Punished) {
1845. 			unplacebc();
1846. 			placebc();
1847. 		}
1848. 		vision_recalc(2);	/* unsee old position */
1849. 		u.uinwater = 1;
1850. 		under_water(1);
1851. 		vision_full_recalc = 1;
1852. 		return(FALSE);
1853. 	}
1854. 	if((Teleportation || can_teleport(uasmon)) &&
1855. 	   (Teleport_control || rn2(3) < Luck+2)) {
1856. 		You("attempt a teleport spell.");	/* utcsri!carroll */
1857. 		(void) dotele();
1858. 		if(!is_pool(u.ux,u.uy))
1859. 			return(TRUE);
1860. 	}
1861. 	crawl_ok = FALSE;
1862. 	/* look around for a place to crawl to */
1863. 	for (i = 0; i < 100; i++) {
1864. 		x = rn1(3,u.ux - 1);
1865. 		y = rn1(3,u.uy - 1);
1866. 		if (goodpos(x, y, (struct monst *)0, &playermon)
1867. 			|| goodpos(x, y, (struct monst *)0, uasmon)) {
1868. 			crawl_ok = TRUE;
1869. 			goto crawl;
1870. 		}
1871. 	}
1872. 	/* one more scan */
1873. 	for (x = u.ux - 1; x <= u.ux + 1; x++)
1874. 		for (y = u.uy - 1; y <= u.uy + 1; y++)
1875. 			if (goodpos(x, y, (struct monst *)0, &playermon)
1876. 				|| goodpos(x, y, (struct monst *)0, uasmon)) {
1877. 				crawl_ok = TRUE;
1878. 				goto crawl;
1879. 			}
1880. crawl:;
1881. 	if (crawl_ok) {
1882. 		boolean lost = FALSE;
1883. 		/* time to do some strip-tease... */
1884. 		boolean succ = Is_waterlevel(&u.uz) ? TRUE :
1885. 				emergency_disrobe(&lost);
1886. 
1887. 		You("try to crawl out of the water.");
1888. 		if (lost)
1889. 			You("dump some of your gear to lose weight...");
1890. 		if (succ) {
1891. 			pline("Pheew!  That was close.");
1892. 			teleds(x,y);
1893. 			return(TRUE);
1894. 		}
1895. 		/* still too much weight */
1896. 		pline("But in vain.");
1897. 	}
1898. 	u.uinwater = 1;
1899. 	You("drown.");
1900. 	killer_format = KILLED_BY_AN;
1901. 	killer = (levl[u.ux][u.uy].typ == POOL || Is_medusa_level(&u.uz)) ?
1902. 	    "pool of water" : "moat";
1903. 	done(DROWNING);
1904. 	/* oops, we're still alive.  better get out of the water. */
1905. 	while (!safe_teleds()) {
1906. 		pline("You're still drowning.");
1907. 		done(DROWNING);
1908. 	}
1909. 	u.uinwater = 0;
1910. 	You("find yourself back %s.", Is_waterlevel(&u.uz) ?
1911. 		"in an air bubble" : "on land");
1912. 	return(TRUE);
1913. }
1914. 
1915. void
1916. drain_en(n)
1917. register int n;
1918. {
1919. 	if (!u.uenmax) return;
1920. 	You_feel("your magical energy drain away!");
1921. 	u.uen -= n;
1922. 	if(u.uen < 0)  {
1923. 		u.uenmax += u.uen;
1924. 		if(u.uenmax < 0) u.uenmax = 0;
1925. 		u.uen = 0;
1926. 	}
1927. 	flags.botl = 1;
1928. }
1929. 
1930. int
1931. dountrap()	/* disarm a trap */
1932. {
1933. 	if (near_capacity() >= HVY_ENCUMBER) {
1934. 	    pline("You're too strained to do that.");
1935. 	    return 0;
1936. 	}
1937. 	if (nohands(uasmon) || !uasmon->mmove) {
1938. 	    pline("And just how do you expect to do that?");
1939. 	    return 0;
1940. 	} else if (u.ustuck && sticks(uasmon)) {
1941. 	    pline("You'll have to let go of %s first.", mon_nam(u.ustuck));
1942. 	    return 0;
1943. 	}
1944. 	if (u.ustuck || (welded(uwep) && bimanual(uwep))) {
1945. 	    Your("%s seem to be too busy for that.",
1946. 		 makeplural(body_part(HAND)));
1947. 	    return 0;
1948. 	}
1949. 	return untrap(FALSE);
1950. }
1951. #endif /* OVLB */
1952. #ifdef OVL2
1953. 
1954. /* Probability of disabling a trap.  Helge Hafting */
1955. STATIC_OVL int
1956. untrap_prob(ttmp)
1957. struct trap *ttmp;
1958. {
1959. 	int chance = 3;
1960. 
1961. 	if (Confusion || Hallucination) chance++;
1962. 	if (Blind) chance++;
1963. 	if (Stunned) chance += 2;
1964. 	if (Fumbling) chance *= 2;
1965. 	/* Your own traps are better known than others. */
1966. 	if (ttmp && ttmp->madeby_u) chance--;
1967. 	if (Role_is('R')) {
1968. 	    if (rn2(2 * MAXULEV) < u.ulevel) chance--;
1969. 	    if (u.uhave.questart && chance > 1) chance--;
1970. 	}
1971. 	return rn2(chance);
1972. }
1973. 
1974. /* Replace trap with object(s).  Helge Hafting */
1975. STATIC_OVL void
1976. cnv_trap_obj(otyp, cnt, ttmp)
1977. int otyp;
1978. int cnt;
1979. struct trap *ttmp;
1980. {
1981. 	struct obj *otmp = mksobj(otyp, TRUE, FALSE);
1982. 	otmp->quan=cnt;
1983. 	otmp->owt = weight(otmp);
1984. 	place_object(otmp, ttmp->tx, ttmp->ty);
1985. 	/* Sell your own traps only... */
1986. 	if (ttmp->madeby_u) sellobj(otmp, ttmp->tx, ttmp->ty);
1987. 	stackobj(otmp);
1988. 	newsym(ttmp->tx, ttmp->ty);
1989. 	deltrap(ttmp);
1990. }
1991. 
1992. /* while attempting to disarm an adjacent trap, we've fallen into it */
1993. STATIC_OVL void
1994. move_into_trap(ttmp)
1995. struct trap *ttmp;
1996. {
1997. 	int bc;
1998. 	xchar x = ttmp->tx, y = ttmp->ty, bx, by, cx, cy;
1999. 	boolean unused;
2000. 
2001. 	/* we know there's no monster in the way, and we're not trapped */
2002. 	if (!Punished || drag_ball(x, y, &bc, &bx, &by, &cx, &cy, &unused)) {
2003. 	    u.ux0 = u.ux,  u.uy0 = u.uy;
2004. 	    u.ux = x,  u.uy = y;
2005. 	    u.umoved = TRUE;
2006. 	    newsym(u.ux0, u.uy0);
2007. 	    vision_recalc(1);
2008. 	    check_leash(u.ux0, u.uy0);
2009. 	    if (Punished) move_bc(0, bc, bx, by, cx, cy);
2010. 	    spoteffects();	/* dotrap() */
2011. 	    exercise(A_WIS, FALSE);
2012. 	}
2013. }
2014. 
2015. /* 0: doesn't even try
2016.  * 1: tries and fails
2017.  * 2: succeeds
2018.  */
2019. STATIC_OVL int
2020. try_disarm(ttmp, force_failure)
2021. struct trap *ttmp;
2022. boolean force_failure;
2023. {
2024. 	struct monst *mtmp = m_at(ttmp->tx,ttmp->ty);
2025. 	int ttype = ttmp->ttyp;
2026. 	boolean under_u = (!u.dx && !u.dy);
2027. 
2028. 	/* Test for monster first, monsters are displayed instead of trap. */
2029. 	if (mtmp && (!mtmp->mtrapped || ttype != BEAR_TRAP)) {
2030. 		pline("%s is in the way.", Monnam(mtmp));
2031. 		return 0;
2032. 	}
2033. 	/* We might be forced to move onto the trap's location. */
2034. 	if (sobj_at(BOULDER, ttmp->tx, ttmp->ty)
2035. 				&& !passes_walls(uasmon) && !under_u) {
2036. 		pline("There is a boulder in your way.");
2037. 		return 0;
2038. 	}
2039. 	/* untrappable traps are located on the ground. */
2040. 	if (!can_reach_floor()) {
2041. 		You("are unable to reach the %s!",
2042. 			defsyms[trap_to_defsym(ttype)].explanation);
2043. 		return 0;
2044. 	}
2045. 
2046. 	/* Will our hero succeed? */
2047. 	if (force_failure || untrap_prob(ttmp)) {
2048. 		if (rnl(5)) {
2049. 		    pline("Whoops...");
2050. 		    if (mtmp) {		/* must be a bear trap */
2051. 			if (mtmp->mtame) abuse_dog(mtmp);
2052. 			if ((mtmp->mhp -= rnd(4)) <= 0) killed(mtmp);
2053. 		    } else if (under_u) {
2054. 			dotrap(ttmp);
2055. 		    } else {
2056. 			move_into_trap(ttmp);
2057. 		    }
2058. 		} else {
2059. 		    pline("%s %s is difficult to disarm.",
2060. 			  ttmp->madeby_u ? "Your" : under_u ? "This" : "That",
2061. 			  defsyms[trap_to_defsym(ttype)].explanation);
2062. 		}
2063. 		return 1;
2064. 	}
2065. 	return 2;
2066. }
2067. 
2068. STATIC_OVL void
2069. reward_untrap(ttmp, mtmp)
2070. struct trap *ttmp;
2071. struct monst *mtmp;
2072. {
2073. 	if (!ttmp->madeby_u) {
2074. 		if (rnl(10)<8 && !mtmp->mpeaceful &&
2075. 						mtmp->data->mlet != S_HUMAN) {
2076. 			mtmp->mpeaceful = 1;
2077. 			pline("%s is grateful.", Monnam(mtmp));
2078. 		}
2079. 		/* Helping someone out of a trap is a nice thing to do,
2080. 		 * A lawful may be rewarded, but not too often.  */
2081. 		if (!rn2(3) && !rnl(8) && u.ualign.type == A_LAWFUL) {
2082. 			adjalign(1);
2083. 			You_feel("that you did the right thing.");
2084. 		}
2085. 	}
2086. }
2087. 
2088. STATIC_OVL int
2089. disarm_beartrap(ttmp) /* Helge Hafting */
2090. struct trap *ttmp;
2091. {
2092. 	struct monst *mtmp;
2093. 	int fails = try_disarm(ttmp, FALSE);
2094. 
2095. 	if (fails < 2) return fails;
2096. 
2097. 	/* ok, disarm it. */
2098. 
2099. 	/* untrap the monster, if any.
2100. 	   There's no need for a cockatrice test, only the trap is touched */
2101. 	if ((mtmp = m_at(ttmp->tx,ttmp->ty)) != 0) {
2102. 		mtmp->mtrapped = 0;
2103. 		You("remove %s bear trap from %s.", the_your[ttmp->madeby_u],
2104. 			mon_nam(mtmp));
2105. 		reward_untrap(ttmp, mtmp);
2106. 	} else You("disarm %s bear trap.", the_your[ttmp->madeby_u]);
2107. 	cnv_trap_obj(BEARTRAP, 1, ttmp);
2108. 	return 1;
2109. }
2110. 
2111. STATIC_OVL int
2112. disarm_landmine(ttmp) /* Helge Hafting */
2113. struct trap *ttmp;
2114. {
2115. 	int fails = try_disarm(ttmp, FALSE);
2116. 
2117. 	if (fails < 2) return fails;
2118. 	You("disarm %s land mine.", the_your[ttmp->madeby_u]);
2119. 	cnv_trap_obj(LAND_MINE, 1, ttmp);
2120. 	return 1;
2121. }
2122. 
2123. /* getobj will filter down to cans of grease and known potions of oil */
2124. static NEARDATA const char oil[] = { ALL_CLASSES, TOOL_CLASS, POTION_CLASS, 0 };
2125. 
2126. /* it may not make much sense to use grease on floor boards, but so what? */
2127. STATIC_OVL int
2128. disarm_squeaky_board(ttmp)
2129. struct trap *ttmp;
2130. {
2131. 	struct obj *obj;
2132. 	boolean bad_tool;
2133. 	int fails;
2134. 
2135. 	obj = getobj(oil, "untrap with");
2136. 	if (!obj) return 0;
2137. 
2138. 	bad_tool = (obj->cursed ||
2139. 			((obj->otyp != POT_OIL || obj->lamplit) &&
2140. 			 (obj->otyp != CAN_OF_GREASE || !obj->spe)));
2141. 
2142. 	fails = try_disarm(ttmp, bad_tool);
2143. 	if (fails < 2) return fails;
2144. 
2145. 	/* successfully used oil or grease to fix squeaky board */
2146. 	if (obj->otyp == CAN_OF_GREASE) {
2147. 	    check_unpaid(obj);
2148. 	    obj->spe--;
2149. 	} else {
2150. 	    useup(obj);	/* oil */
2151. 	    makeknown(POT_OIL);
2152. 	}
2153. 	You("repair the squeaky board.");	/* no madeby_u */
2154. 	deltrap(ttmp);
2155. 	newsym(u.ux + u.dx, u.uy + u.dy);
2156. 	more_experienced(1, 5);
2157. 	return 1;
2158. }
2159. 
2160. /* removes traps that shoot arrows, darts, etc. */
2161. STATIC_OVL int
2162. disarm_shooting_trap(ttmp, otyp)
2163. struct trap *ttmp;
2164. int otyp;
2165. {
2166. 	int fails = try_disarm(ttmp, FALSE);
2167. 
2168. 	if (fails < 2) return fails;
2169. 	You("disarm %s trap", the_your[ttmp->madeby_u]);
2170. 	cnv_trap_obj(otyp, 50-rnl(50), ttmp);
2171. 	return 1;
2172. }
2173. 
2174. /* Is the weight too heavy?
2175.  * Formula as in near_capacity() & check_capacity() */
2176. STATIC_OVL int
2177. try_lift(mtmp, ttmp, wt, stuff)
2178. struct monst *mtmp;
2179. struct trap *ttmp;
2180. int wt;
2181. boolean stuff;
2182. {
2183. 	int wc = weight_cap();
2184. 
2185. 	if ((((wt<<1) / wc)+1) >= EXT_ENCUMBER) {
2186. 		pline("%s is %s for you to lift.", Monnam(mtmp),
2187. 			stuff ? "carrying too much" : "too heavy");
2188. 		if (!ttmp->madeby_u && !mtmp->mpeaceful
2189. 			&& mtmp->data->mlet != S_HUMAN && rnl(10) < 3) {
2190. 		    mtmp->mpeaceful = 1;
2191. 		    pline("%s thinks it was nice of you to try.", Monnam(mtmp));
2192. 		}
2193. 		return 0;
2194. 	}
2195. 	return 1;
2196. }
2197. 
2198. /* Help trapped monster (out of a (spiked) pit) */
2199. STATIC_OVL int
2200. help_monster_out(mtmp, ttmp)
2201. struct monst *mtmp;
2202. struct trap *ttmp;
2203. {
2204. 	int wt;
2205. 	struct obj *otmp;
2206. 
2207. 	/*
2208. 	 * This works when levitating too -- consistent with the ability
2209. 	 * to hit monsters while levitating.
2210. 	 *
2211. 	 * Should perhaps check that our hero has arms/hands at the
2212. 	 * moment.  Helping can also be done by engulfing...
2213. 	 *
2214. 	 * Test the monster first - monsters are displayed before traps.
2215. 	 */
2216. 	if (!mtmp->mtrapped) {
2217. 		pline("%s isn't trapped.", Monnam(mtmp));
2218. 		return 0;
2219. 	}
2220. 	/* Do you have the necessary capacity to lift anything? */
2221. 	if (check_capacity((char *)0)) return 1;
2222. 
2223. 	/* Will our hero succeed? */
2224. 	if (untrap_prob(ttmp)) {
2225. 		You("try to reach out your %s, but %s backs away skeptically.",
2226. 			makeplural(body_part(ARM)),
2227. 			mon_nam(mtmp));
2228. 		return 1;
2229. 	}
2230. 
2231. 
2232. 	/* is it a cockatrice?... */
2233. 	if (mtmp->data == &mons[PM_COCKATRICE] && !uarmg
2234. 		    && !resists_ston(&youmonst)) {
2235. 		You("grab the trapped cockatrice using your bare %s.",
2236. 			makeplural(body_part(HAND)));
2237. 
2238. 		if (poly_when_stoned(uasmon) && polymon(PM_STONE_GOLEM))
2239. 			display_nhwindow(WIN_MESSAGE, FALSE);
2240. 		else {
2241. 		      instapetrify("trying to help a cockatrice out of a pit");
2242. 			return 1;
2243. 		}
2244. 	}
2245. 	You("reach out your %s and grab %s.",
2246. 			makeplural(body_part(ARM)), mon_nam(mtmp));
2247. 
2248. 	/* is the monster too heavy? */
2249. 	wt = inv_weight() + mtmp->data->cwt;
2250. 	if (!try_lift(mtmp, ttmp, wt, FALSE)) return 1;
2251. 
2252. 	/* is the monster with inventory too heavy? */
2253. 	for (otmp = mtmp->minvent; otmp; otmp=otmp->nobj)
2254. 		wt += otmp->owt;
2255. 	if (!try_lift(mtmp, ttmp, wt, TRUE)) return 1;
2256. 
2257. 	You("pull %s out of the pit.", mon_nam(mtmp));
2258. 	mtmp->mtrapped = 0;
2259. 	reward_untrap(ttmp, mtmp);
2260. 	return 1;
2261. }
2262. 
2263. int
2264. untrap(force)
2265. boolean force;
2266. {
2267. 	register struct obj *otmp;
2268. 	register boolean confused = (Confusion > 0 || Hallucination > 0);
2269. 	register int x,y;
2270. 	int ch;
2271. 	struct trap *ttmp;
2272. 	struct monst *mtmp;
2273. 	boolean trap_skipped = FALSE;
2274. 
2275. 	if(!getdir((char *)0)) return(0);
2276. 	x = u.ux + u.dx;
2277. 	y = u.uy + u.dy;
2278. 
2279. 	if ((ttmp = t_at(x,y)) && ttmp->tseen) {
2280. 		if (u.utrap) {
2281. 			You("cannot deal with traps while trapped!");
2282. 			return 1;
2283. 		}
2284. 		switch(ttmp->ttyp) {
2285. 			case BEAR_TRAP:
2286. 				return disarm_beartrap(ttmp);
2287. 			case LANDMINE:
2288. 				return disarm_landmine(ttmp);
2289. 			case SQKY_BOARD:
2290. 				return disarm_squeaky_board(ttmp);
2291. 			case DART_TRAP:
2292. 				return disarm_shooting_trap(ttmp, DART);
2293. 			case ARROW_TRAP:
2294. 				return disarm_shooting_trap(ttmp, ARROW);
2295. 			case PIT:
2296. 			case SPIKED_PIT:
2297. 				if (!u.dx && !u.dy) {
2298. 				    You("are already on the edge of the pit.");
2299. 				    return 0;
2300. 				}
2301. 				if (!(mtmp = m_at(x,y))) {
2302. 				    pline("Try filling the pit instead.");
2303. 				    return 0;
2304. 				}
2305. 				return help_monster_out(mtmp, ttmp);
2306. 			default:
2307. 				You("cannot disable %s trap.", (u.dx || u.dy) ? "that" : "this");
2308. 				return 0;
2309. 		} /* end switch */
2310. 	} /* end if */
2311. 
2312. 	if(!u.dx && !u.dy) {
2313. 	    for(otmp = level.objects[x][y]; otmp; otmp = otmp->nexthere)
2314. 		if(Is_box(otmp)) {
2315. 		    pline("There is %s here.", doname(otmp));
2316. 
2317. 		    switch (ynq("Check for traps?")) {
2318. 			case 'q': return(0);
2319. 			case 'n': continue;
2320. 		    }
2321. 
2322. 		    if((otmp->otrapped && (force || (!confused
2323. 				&& rn2(MAXULEV + 1 - u.ulevel) < 10)))
2324. 		       || (!force && confused && !rn2(3))) {
2325. 			You("find a trap on %s!", the(xname(otmp)));
2326. 			exercise(A_WIS, TRUE);
2327. 
2328. 			switch (ynq("Disarm it?")) {
2329. 			    case 'q': return(1);
2330. 			    case 'n': trap_skipped = TRUE;  continue;
2331. 			}
2332. 
2333. 			if(otmp->otrapped) {
2334. 			    exercise(A_DEX, TRUE);
2335. 			    ch = ACURR(A_DEX) + u.ulevel;
2336. 			    if (Role_is('R')) ch *= 2;
2337. 			    if(!force && (confused || Fumbling ||
2338. 				rnd(75+level_difficulty()/2) > ch)) {
2339. 				(void) chest_trap(otmp, FINGER, TRUE);
2340. 			    } else {
2341. 				You("disarm it!");
2342. 				otmp->otrapped = 0;
2343. 			    }
2344. 			} else pline("That %s was not trapped.", doname(otmp));
2345. 			return(1);
2346. 		    } else {
2347. 			You("find no traps on %s.", the(xname(otmp)));
2348. 			return(1);
2349. 		    }
2350. 		}
2351. 
2352. 	    You(trap_skipped ? "find no other traps here."
2353. 			     : "know of no traps here.");
2354. 	    return(0);
2355. 	}
2356. 
2357. 	if ((mtmp = m_at(x,y))				&&
2358. 		mtmp->m_ap_type == M_AP_FURNITURE	&&
2359. 		(mtmp->mappearance == S_hcdoor ||
2360. 			mtmp->mappearance == S_vcdoor)	&&
2361. 		!Protection_from_shape_changers)	 {
2362. 
2363. 	    stumble_onto_mimic(mtmp);
2364. 	    return(1);
2365. 	}
2366. 
2367. 	if (!IS_DOOR(levl[x][y].typ)) {
2368. 	    if ((ttmp = t_at(x,y)) && ttmp->tseen)
2369. 		You("cannot disable that trap.");
2370. 	    else
2371. 		You("know of no traps there.");
2372. 	    return(0);
2373. 	}
2374. 
2375. 	switch (levl[x][y].doormask) {
2376. 	    case D_NODOOR:
2377. 		You("%s no door there.", Blind ? "feel" : "see");
2378. 		return(0);
2379. 	    case D_ISOPEN:
2380. 		pline("This door is safely open.");
2381. 		return(0);
2382. 	    case D_BROKEN:
2383. 		pline("This door is broken.");
2384. 		return(0);
2385. 	}
2386. 
2387. 	if ((levl[x][y].doormask & D_TRAPPED
2388. 	     && (force ||
2389. 		 (!confused && rn2(MAXULEV - u.ulevel + 11) < 10)))
2390. 	    || (!force && confused && !rn2(3))) {
2391. 		You("find a trap on the door!");
2392. 		exercise(A_WIS, TRUE);
2393. 		if (ynq("Disarm it?") != 'y') return(1);
2394. 		if (levl[x][y].doormask & D_TRAPPED) {
2395. 		    ch = 15 + (Role_is('R') ? u.ulevel*3 : u.ulevel);
2396. 		    exercise(A_DEX, TRUE);
2397. 		    if(!force && (confused || Fumbling ||
2398. 				     rnd(75+level_difficulty()/2) > ch)) {
2399. 			    You("set it off!");
2400. 			    b_trapped("door", FINGER);
2401. 		    } else
2402. 			    You("disarm it!");
2403. 		    levl[x][y].doormask &= ~D_TRAPPED;
2404. 		} else pline("This door was not trapped.");
2405. 		return(1);
2406. 	} else {
2407. 		You("find no traps on the door.");
2408. 		return(1);
2409. 	}
2410. }
2411. #endif /* OVL2 */
2412. #ifdef OVLB
2413. 
2414. /* only called when the player is doing something to the chest directly */
2415. boolean
2416. chest_trap(obj, bodypart, disarm)
2417. register struct obj *obj;
2418. register int bodypart;
2419. boolean disarm;
2420. {
2421. 	register struct obj *otmp = obj, *otmp2;
2422. 	char	buf[80];
2423. 	const char *msg;
2424. 
2425. 	You(disarm ? "set it off!" : "trigger a trap!");
2426. 	display_nhwindow(WIN_MESSAGE, FALSE);
2427. 	if (Luck > -13 && rn2(13+Luck) > 7) {	/* saved by luck */
2428. 	    /* trap went off, but good luck prevents damage */
2429. 	    switch (rn2(13)) {
2430. 		case 12:
2431. 		case 11:  msg = "explosive charge is a dud";  break;
2432. 		case 10:
2433. 		case  9:  msg = "electric charge is grounded";  break;
2434. 		case  8:
2435. 		case  7:  msg = "flame fizzles out";  break;
2436. 		case  6:
2437. 		case  5:
2438. 		case  4:  msg = "poisoned needle misses";  break;
2439. 		case  3:
2440. 		case  2:
2441. 		case  1:
2442. 		case  0:  msg = "gas cloud blows away";  break;
2443. 		default:  impossible("chest disarm bug");  msg = (char *)0;
2444. 			  break;
2445. 	    }
2446. 	    if (msg) pline("But luckily the %s!", msg);
2447. 	} else {
2448. 	    switch(rn2(20) ? ((Luck >= 13) ? 0 : rn2(13-Luck)) : rn2(26)) {
2449. 		case 25:
2450. 		case 24:
2451. 		case 23:
2452. 		case 22:
2453. 		case 21: {
2454. 			  struct monst *shkp = 0;
2455. 			  long loss = 0L;
2456. 			  boolean costly, insider;
2457. 			  register xchar ox = obj->ox, oy = obj->oy;
2458. 
2459. 			  /* the obj location need not be that of player */
2460. 			  costly = (costly_spot(ox, oy) &&
2461. 				   (shkp = shop_keeper(*in_rooms(ox, oy,
2462. 				    SHOPBASE))) != (struct monst *)0);
2463. 			  insider = (*u.ushops && inside_shop(u.ux, u.uy) &&
2464. 				    *in_rooms(ox, oy, SHOPBASE) == *u.ushops);
2465. 
2466. 			  pline("%s explodes!", The(xname(obj)));
2467. 			  Sprintf(buf, "exploding %s", xname(obj));
2468. 
2469. 			  if(costly)
2470. 			      loss += stolen_value(obj, ox, oy,
2471. 						(boolean)shkp->mpeaceful, TRUE);
2472. 			  delete_contents(obj);
2473. 			  for(otmp = level.objects[u.ux][u.uy];
2474. 							otmp; otmp = otmp2) {
2475. 			      otmp2 = otmp->nexthere;
2476. 			      if(costly)
2477. 				  loss += stolen_value(otmp, otmp->ox,
2478. 					  otmp->oy, (boolean)shkp->mpeaceful,
2479. 					  TRUE);
2480. 			      delobj(otmp);
2481. 			  }
2482. 			  wake_nearby();
2483. 			  losehp(d(6,6), buf, KILLED_BY_AN);
2484. 			  exercise(A_STR, FALSE);
2485. 			  if(costly && loss) {
2486. 			      if(insider)
2487. 			      You("owe %ld zorkmids for objects destroyed.",
2488. 							loss);
2489. 			      else {
2490. 				  You("caused %ld zorkmids worth of damage!",
2491. 							loss);
2492. 				  make_angry_shk(shkp, ox, oy);
2493. 			      }
2494. 			  }
2495. 			  return TRUE;
2496. 			}
2497. 		case 20:
2498. 		case 19:
2499. 		case 18:
2500. 		case 17:
2501. 			pline("A cloud of noxious gas billows from %s.",
2502. 							the(xname(obj)));
2503. 			poisoned("gas cloud", A_STR, "cloud of poison gas",15);
2504. 			exercise(A_CON, FALSE);
2505. 			break;
2506. 		case 16:
2507. 		case 15:
2508. 		case 14:
2509. 		case 13:
2510. 			You_feel("a needle prick your %s.",body_part(bodypart));
2511. 			poisoned("needle", A_CON, "poisoned needle",10);
2512. 			exercise(A_CON, FALSE);
2513. 			break;
2514. 		case 12:
2515. 		case 11:
2516. 		case 10:
2517. 		case 9:
2518. 			dofiretrap(obj);
2519. 			break;
2520. 		case 8:
2521. 		case 7:
2522. 		case 6: {
2523. 			int dmg;
2524. 
2525. 			You("are jolted by a surge of electricity!");
2526. 			if(Shock_resistance)  {
2527. 			    shieldeff(u.ux, u.uy);
2528. 			    You("don't seem to be affected.");
2529. 			    dmg = 0;
2530. 			} else
2531. 			    dmg = d(4, 4);
2532. 			destroy_item(RING_CLASS, AD_ELEC);
2533. 			destroy_item(WAND_CLASS, AD_ELEC);
2534. 			if (dmg) losehp(dmg, "electric shock", KILLED_BY_AN);
2535. 			break;
2536. 		      }
2537. 		case 5:
2538. 		case 4:
2539. 		case 3:
2540. 			pline("Suddenly you are frozen in place!");
2541. 			nomul(-d(5, 6));
2542. 			exercise(A_DEX, FALSE);
2543. 			nomovemsg = "You can move again.";
2544. 			break;
2545. 		case 2:
2546. 		case 1:
2547. 		case 0:
2548. 			pline("A cloud of %s gas billows from %s.",
2549. 						hcolor((char *)0),
2550. 						the(xname(obj)));
2551. 			if(!Stunned) {
2552. 			    if (Hallucination)
2553. 				pline("What a groovy feeling!");
2554. 			    else if (Blind)
2555. 				You("stagger and get dizzy...");
2556. 			    else
2557. 				You("stagger and your vision blurs...");
2558. 			}
2559. 			make_stunned(HStun + rn1(7, 16),FALSE);
2560. 			make_hallucinated(HHallucination + rn1(5, 16),FALSE,0L);
2561. 			break;
2562. 		default: impossible("bad chest trap");
2563. 			break;
2564. 	    }
2565. 	    bot();			/* to get immediate botl re-display */
2566. 	}
2567. 	otmp->otrapped = 0;		/* these traps are one-shot things */
2568. 
2569. 	return FALSE;
2570. }
2571. 
2572. #endif /* OVLB */
2573. #ifdef OVL0
2574. 
2575. struct trap *
2576. t_at(x,y)
2577. register int x, y;
2578. {
2579. 	register struct trap *trap = ftrap;
2580. 	while(trap) {
2581. 		if(trap->tx == x && trap->ty == y) return(trap);
2582. 		trap = trap->ntrap;
2583. 	}
2584. 	return((struct trap *)0);
2585. }
2586. 
2587. #endif /* OVL0 */
2588. #ifdef OVLB
2589. 
2590. void
2591. deltrap(trap)
2592. register struct trap *trap;
2593. {
2594. 	register struct trap *ttmp;
2595. 
2596. 	if(trap == ftrap)
2597. 		ftrap = ftrap->ntrap;
2598. 	else {
2599. 		for(ttmp = ftrap; ttmp->ntrap != trap; ttmp = ttmp->ntrap) ;
2600. 		ttmp->ntrap = trap->ntrap;
2601. 	}
2602. 	dealloc_trap(trap);
2603. }
2604. 
2605. boolean delfloortrap(ttmp)
2606. register struct trap *ttmp;
2607. {
2608. 	/* Destroy a trap that emanates from the floor. */
2609. 	/* some of these are arbitrary -dlc */
2610. 	if (ttmp && ((ttmp->ttyp == SQKY_BOARD) ||
2611. 		     (ttmp->ttyp == BEAR_TRAP) ||
2612. 		     (ttmp->ttyp == LANDMINE) ||
2613. 		     (ttmp->ttyp == FIRE_TRAP) ||
2614. 		     (ttmp->ttyp == PIT) ||
2615. 		     (ttmp->ttyp == SPIKED_PIT) ||
2616. 		     (ttmp->ttyp == HOLE) ||
2617. 		     (ttmp->ttyp == TRAPDOOR) ||
2618. 		     (ttmp->ttyp == TELEP_TRAP) ||
2619. 		     (ttmp->ttyp == LEVEL_TELEP) ||
2620. 		     (ttmp->ttyp == WEB) ||
2621. 		     (ttmp->ttyp == MAGIC_TRAP) ||
2622. 		     (ttmp->ttyp == ANTI_MAGIC))) {
2623. 	    register struct monst *mtmp;
2624. 
2625. 	    if (ttmp->tx == u.ux && ttmp->ty == u.uy) {
2626. 		u.utrap = 0;
2627. 		u.utraptype = 0;
2628. 	    } else if ((mtmp = m_at(ttmp->tx, ttmp->ty)) != 0) {
2629. 		mtmp->mtrapped = 0;
2630. 	    }
2631. 	    deltrap(ttmp);
2632. 	    return TRUE;
2633. 	} else
2634. 	    return FALSE;
2635. }
2636. 
2637. /* used for doors (also tins).  can be used for anything else that opens. */
2638. void
2639. b_trapped(item, bodypart)
2640. register const char *item;
2641. register int bodypart;
2642. {
2643. 	register int lvl = level_difficulty();
2644. 	int dmg = rnd(5 + (lvl < 5 ? lvl : 2+lvl/2));
2645. 
2646. 	pline("KABOOM!!  %s was booby-trapped!", The(item));
2647. 	wake_nearby();
2648. 	losehp(dmg, "explosion", KILLED_BY_AN);
2649. 	exercise(A_STR, FALSE);
2650. 	if (bodypart) exercise(A_CON, FALSE);
2651. 	make_stunned(HStun + dmg, TRUE);
2652. }
2653. 
2654. /* Monster is hit by trap. */
2655. /* Note: doesn't work if both obj and d_override are null */
2656. STATIC_OVL boolean
2657. thitm(tlev, mon, obj, d_override)
2658. register int tlev;
2659. register struct monst *mon;
2660. register struct obj *obj;
2661. int d_override;
2662. {
2663. 	register int strike;
2664. 	register boolean trapkilled = FALSE;
2665. 
2666. 	if (d_override) strike = 1;
2667. 	else if (obj) strike = (find_mac(mon) + tlev + obj->spe <= rnd(20));
2668. 	else strike = (find_mac(mon) + tlev <= rnd(20));
2669. 
2670. 	/* Actually more accurate than thitu, which doesn't take
2671. 	 * obj->spe into account.
2672. 	 */
2673. 	if(!strike) {
2674. 		if (cansee(mon->mx, mon->my))
2675. 			pline("%s is almost hit by %s!", Monnam(mon),
2676. 								doname(obj));
2677. 	} else {
2678. 		int dam = 1;
2679. 
2680. 		if (obj && cansee(mon->mx, mon->my))
2681. 			pline("%s is hit by %s!", Monnam(mon), doname(obj));
2682. 		if (d_override) dam = d_override;
2683. 		else if (obj) {
2684. 			dam = dmgval(obj, mon);
2685. 			if (dam < 1) dam = 1;
2686. 		}
2687. 		if ((mon->mhp -= dam) <= 0) {
2688. 			int xx = mon->mx;
2689. 			int yy = mon->my;
2690. 
2691. 			monkilled(mon, "", AD_PHYS);
2692. 			if (mon->mhp <= 0) {
2693. 				newsym(xx, yy);
2694. 				trapkilled = TRUE;
2695. 			}
2696. 		}
2697. 	}
2698. 	if (obj && (!strike || d_override)) {
2699. 		place_object(obj, mon->mx, mon->my);
2700. 		stackobj(obj);
2701. 	} else if (obj) dealloc_obj(obj);
2702. 
2703. 	return trapkilled;
2704. }
2705. 
2706. boolean
2707. unconscious()
2708. {
2709. 	return((boolean)(multi < 0 && (!nomovemsg ||
2710. 		u.usleep ||
2711. 		!strncmp(nomovemsg,"You regain con", 15) ||
2712. 		!strncmp(nomovemsg,"You are consci", 15))));
2713. }
2714. 
2715. static char lava_killer[] = "molten lava";
2716. 
2717. boolean
2718. lava_effects()
2719. {
2720.     register struct obj *obj, *obj2;
2721.     int dmg;
2722. 
2723.     if (likes_lava(uasmon)) return FALSE;
2724. 
2725.     if (!Fire_resistance) {
2726. 	if(Wwalking) {
2727. 	    dmg = d(6,6);
2728. 	    pline_The("lava here burns you!");
2729. 	    if(dmg < u.uhp) {
2730. 		losehp(dmg, lava_killer, KILLED_BY);
2731. 		goto burn_stuff;
2732. 	    }
2733. 	} else
2734. 	    You("fall into the lava!");
2735. 
2736. 	for(obj = invent; obj; obj = obj2) {
2737. 	    obj2 = obj->nobj;
2738. 	    if(is_organic(obj) && !obj->oerodeproof) {
2739. 		if(obj->owornmask) {
2740. 		    if(obj == uarm) (void) Armor_gone();
2741. 		    else if(obj == uarmc) (void) Cloak_off();
2742. 		    else if(obj == uarmh) (void) Helmet_off();
2743. 		    else if(obj == uarms) (void) Shield_off();
2744. 		    else if(obj == uarmg) (void) Gloves_off();
2745. 		    else if(obj == uarmf) (void) Boots_off();
2746. #ifdef TOURIST
2747. 		    else if(obj == uarmu) setnotworn(obj);
2748. #endif
2749. 		    else if(obj == uleft) Ring_gone(obj);
2750. 		    else if(obj == uright) Ring_gone(obj);
2751. 		    else if(obj == ublindf) Blindf_off(obj);
2752. 		    else if(obj == uwep) uwepgone();
2753. 		    if(Lifesaved
2754. #ifdef WIZARD
2755. 		       || wizard
2756. #endif
2757. 		       ) Your("%s into flame!", aobjnam(obj, "burst"));
2758. 		}
2759. 		useup(obj);
2760. 	    }
2761. 	}
2762. 
2763. 	/* s/he died... */
2764. 	u.uhp = -1;
2765. 	killer_format = KILLED_BY;
2766. 	killer = lava_killer;
2767. 	You("burn to a crisp...");
2768. 	done(BURNING);
2769. 	while (!safe_teleds()) {
2770. 		pline("You're still burning.");
2771. 		done(BURNING);
2772. 	}
2773. 	You("find yourself back on solid %s.", surface(u.ux, u.uy));
2774. 	return(TRUE);
2775.     }
2776. 
2777.     if (!Wwalking) {
2778. 	u.utrap = rn1(4, 4) + (rn1(4, 12) << 8);
2779. 	u.utraptype = TT_LAVA;
2780. 	You("sink into the lava, but it only burns slightly!");
2781. 	if (u.uhp > 1)
2782. 	    losehp(1, lava_killer, KILLED_BY);
2783.     }
2784.     /* just want to burn boots, not all armor; destroy_item doesn't work on
2785.        armor anyway */
2786. burn_stuff:
2787.     if(uarmf && !uarmf->oerodeproof && is_organic(uarmf)) {
2788. 	/* save uarmf value because Boots_off() sets uarmf to null */
2789. 	obj = uarmf;
2790. 	Your("%s burst into flame!", xname(obj));
2791. 	(void) Boots_off();
2792. 	useup(obj);
2793.     }
2794.     destroy_item(SCROLL_CLASS, AD_FIRE);
2795.     destroy_item(SPBOOK_CLASS, AD_FIRE);
2796.     destroy_item(POTION_CLASS, AD_FIRE);
2797.     return(FALSE);
2798. }
2799. 
2800. #endif /* OVLB */
2801. 
2802. /*trap.c*/

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