Source:NetHack 1.3d/hack.c

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Below is the full text to hack.c from the source code of NetHack 1.3d. To link to a particular line, write [[NetHack 1.3d/hack.c#line123]], for example.

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

Screenshots and source code from Hack are used under the CWI license.

1.    /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
2.    /* hack.c - version 1.0.3 */
3.    
4.    #include <stdio.h>
5.    #include "hack.h"
6.    #ifdef UNIX
7.    static	char	SCCS_Id[] = "@(#)hack.c	1.3\t87/07/14";
8.    #endif
9.    extern char news0();
10.   extern char *nomovemsg;
11.   extern char *exclam();
12.   extern struct obj *addinv();
13.   extern boolean hmon();
14.   
15.   /* called on movement:
16.   	1. when throwing ball+chain far away
17.   	2. when teleporting
18.   	3. when walking out of a lit room
19.    */
20.   unsee() {
21.   	register x,y;
22.   	register struct rm *lev;
23.   
24.   /*
25.   	if(u.udispl){
26.   		u.udispl = 0;
27.   		newsym(u.udisx, u.udisy);
28.   	}
29.   */
30.   #ifndef QUEST
31.   	if(seehx){
32.   		seehx = 0;
33.   	} else
34.   #endif
35.   	for(x = u.ux-1; x < u.ux+2; x++)
36.   	  for(y = u.uy-1; y < u.uy+2; y++) {
37.   		if(!isok(x, y)) continue;
38.   		lev = &levl[x][y];
39.   #ifdef DGK
40.   		if(!lev->lit && lev->scrsym == symbol.room) {
41.   #else
42.   		if(!lev->lit && lev->scrsym == '.') {
43.   #endif
44.   			lev->scrsym =' ';
45.   			lev->new = 1;
46.   			on_scr(x,y);
47.   		}
48.   	}
49.   }
50.   
51.   /* called:
52.   	in apply.c:  seeoff(0) - when taking a picture of yourself
53.   	in do.c:     seeoff(0) - blind after drinking potion
54.   	in do.c:     seeoff(1) - go up or down the stairs
55.   	in eat.c:    seeoff(0) - blind after eating rotten food
56.   	in mhitu.c:  seeoff(0) - blinded by a yellow light
57.   	in mon.c:    seeoff(1) - swallowed
58.   	in potion.c: seeoff(0) - quaffing or sniffing a potion of blindness
59.   	in spell.c:  seeoff(0) - due to a cursed spellbook
60.   	in trap.c:   seeoff(1) - fall through trapdoor
61.   	in wizard.c: seeoff(0) - hit by a cream pie.
62.    */
63.   seeoff(mode)	/* 1 to redo @, 0 to leave them */
64.   {	/* 1 means misc movement, 0 means blindness */
65.   	register x,y;
66.   	register struct rm *lev;
67.   
68.   	if(u.udispl && mode){
69.   		u.udispl = 0;
70.   		levl[u.udisx][u.udisy].scrsym = news0(u.udisx,u.udisy);
71.   	}
72.   #ifndef QUEST
73.   	if(seehx) {
74.   		seehx = 0;
75.   	} else
76.   #endif
77.   	if(!mode) {
78.   		for(x = u.ux-1; x < u.ux+2; x++)
79.   			for(y = u.uy-1; y < u.uy+2; y++) {
80.   				if(!isok(x, y)) continue;
81.   				lev = &levl[x][y];
82.   #ifdef DGK
83.   				if(!lev->lit && lev->scrsym == symbol.room)
84.   #else
85.   				if(!lev->lit && lev->scrsym == '.')
86.   #endif
87.   					lev->seen = 0;
88.   			}
89.   	}
90.   }
91.   
92.   static
93.   moverock() {
94.   	register xchar rx, ry;
95.   	register struct obj *otmp;
96.   	register struct trap *ttmp;
97.   
98.   	while(otmp = sobj_at(ENORMOUS_ROCK, u.ux+u.dx, u.uy+u.dy)) {
99.   		rx = u.ux+2*u.dx;
100.  		ry = u.uy+2*u.dy;
101.  		nomul(0);
102.  		if(isok(rx,ry) && !IS_ROCK(levl[rx][ry].typ) &&
103.  		    (levl[rx][ry].typ != DOOR || !(u.dx && u.dy)) &&
104.  		    !sobj_at(ENORMOUS_ROCK, rx, ry)) {
105.  			if(m_at(rx,ry)) {
106.  			    pline("You hear a monster behind the rock.");
107.  			    pline("Perhaps that's why you cannot move it.");
108.  			    goto cannot_push;
109.  			}
110.  			if(ttmp = t_at(rx,ry))
111.  			    switch(ttmp->ttyp) {
112.  			    case PIT:
113.  				pline("You push the rock into a pit!");
114.  				deltrap(ttmp);
115.  				delobj(otmp);
116.  				pline("It completely fills the pit!");
117.  				continue;
118.  			    case TELEP_TRAP:
119.  				pline("You push the rock and suddenly it disappears!");
120.  				delobj(otmp);
121.  				continue;
122.  			    }
123.  			if(levl[rx][ry].typ == POOL) {
124.  				levl[rx][ry].typ = ROOM;
125.  				mnewsym(rx,ry);
126.  				prl(rx,ry);
127.  				pline("You push the rock into the water.");
128.  				pline("Now you can cross the water!");
129.  				delobj(otmp);
130.  				continue;
131.  			}
132.  			otmp->ox = rx;
133.  			otmp->oy = ry;
134.  			/* pobj(otmp); */
135.  			if(cansee(rx,ry)) atl(rx,ry,otmp->olet);
136.  			if(Invisible) newsym(u.ux+u.dx, u.uy+u.dy);
137.  
138.  			{ static long lastmovetime;
139.  			/* note: this var contains garbage initially and
140.  			   after a restore */
141.  			if(moves > lastmovetime+2 || moves < lastmovetime)
142.  			pline("With great effort you move the enormous rock.");
143.  			lastmovetime = moves;
144.  			}
145.  		} else {
146.  		    pline("You try to move the enormous rock, but in vain.");
147.  	    cannot_push:
148.  #ifdef KAA
149.  		    if (u.usym=='9') {
150.  # ifdef DGKMOD
151.  			if(!flags.pickup)
152.  				pline("You easily can push it aside.");
153.  			else
154.  # endif
155.  				pline("However, you easily can pick it up.");
156.  			break;
157.  		    }
158.  #endif
159.  		    if((!invent || inv_weight()+90 <= 0) &&
160.  			(!u.dx || !u.dy || (IS_ROCK(levl[u.ux][u.uy+u.dy].typ)
161.  					&& IS_ROCK(levl[u.ux+u.dx][u.uy].typ)))){
162.  			pline("However, you can squeeze yourself into a small opening.");
163.  			break;
164.  		    } else
165.  			return (-1);
166.  		}
167.  	}
168.  	return (0);
169.  }
170.  
171.  domove()
172.  {
173.  	register struct monst *mtmp;
174.  	register struct rm *tmpr,*ust;
175.  	struct trap *trap;
176.  	register struct obj *otmp;
177.  
178.  	u_wipe_engr(rnd(5));
179.  
180.  	if(inv_weight() > 0){
181.  		pline("You collapse under your load.");
182.  		nomul(0);
183.  		return;
184.  	}
185.  	if(u.uswallow) {
186.  		u.dx = u.dy = 0;
187.  		u.ux = u.ustuck->mx;
188.  		u.uy = u.ustuck->my;
189.  	} else {
190.  		if(Confusion) {
191.  			do {
192.  				confdir();
193.  			} while(!isok(u.ux+u.dx, u.uy+u.dy) ||
194.  			    IS_ROCK(levl[u.ux+u.dx][u.uy+u.dy].typ));
195.  		}
196.  		if(!isok(u.ux+u.dx, u.uy+u.dy)){
197.  			nomul(0);
198.  			return;
199.  		}
200.  	}
201.  
202.  	ust = &levl[u.ux][u.uy];
203.  	u.ux0 = u.ux;
204.  	u.uy0 = u.uy;
205.  	if(!u.uswallow && (trap = t_at(u.ux+u.dx, u.uy+u.dy)) && trap->tseen)
206.  		nomul(0);
207.  	if(u.ustuck && !u.uswallow && (u.ux+u.dx != u.ustuck->mx ||
208.  		u.uy+u.dy != u.ustuck->my)) {
209.  		if(dist(u.ustuck->mx, u.ustuck->my) > 2){
210.  			/* perhaps it fled (or was teleported or ... ) */
211.  			u.ustuck = 0;
212.  		} else {
213.  			if(Blind) pline("You cannot escape from it!");
214.  			else pline("You cannot escape from %s!",
215.  				monnam(u.ustuck));
216.  			nomul(0);
217.  			return;
218.  		}
219.  	}
220.  	if(u.uswallow || (mtmp = m_at(u.ux+u.dx,u.uy+u.dy))) {
221.  	/* attack monster */
222.  
223.  #ifdef SAFE_ATTACK
224.  		/* Don't attack if you're running */
225.  		if (flags.run && !mtmp->mimic
226.  		&& (Blind ? Telepat : (!mtmp->minvis || See_invisible))) {
227.  			nomul(0);
228.  			flags.move = 0;
229.  			return;
230.  		}
231.  #endif
232.  		nomul(0);
233.  		gethungry();
234.  		if(multi < 0) return;	/* we just fainted */
235.  
236.  		/* try to attack; note that it might evade */
237.  		if(attack(u.uswallow ? u.ustuck : mtmp))
238.  			return;
239.  	}
240.  	/* not attacking an animal, so we try to move */
241.  	if(u.utrap) {
242.  		if(u.utraptype == TT_PIT) {
243.  			pline("You are still in a pit.");
244.  			u.utrap--;
245.  		} else {
246.  			pline("You are caught in a beartrap.");
247.  			if((u.dx && u.dy) || !rn2(5)) u.utrap--;
248.  		}
249.  		return;
250.  	}
251.  	tmpr = &levl[u.ux+u.dx][u.uy+u.dy];
252.  	if(IS_ROCK(tmpr->typ) ||
253.  	   (u.dx && u.dy && (tmpr->typ == DOOR || ust->typ == DOOR))){
254.  		flags.move = 0;
255.  		nomul(0);
256.  		return;
257.  	}
258.  	if(moverock() < 0) return;
259.  	if(u.dx && u.dy && IS_ROCK(levl[u.ux][u.uy+u.dy].typ) &&
260.  		IS_ROCK(levl[u.ux+u.dx][u.uy].typ) &&
261.  		invent && inv_weight()+40 > 0) {
262.  		pline("You are carrying too much to get through.");
263.  		nomul(0);
264.  		return;
265.  	}
266.  	if(Punished &&
267.  	   DIST(u.ux+u.dx, u.uy+u.dy, uchain->ox, uchain->oy) > 2){
268.  		if(carried(uball)) {
269.  			movobj(uchain, u.ux, u.uy);
270.  			goto nodrag;
271.  		}
272.  
273.  		if(DIST(u.ux+u.dx, u.uy+u.dy, uball->ox, uball->oy) < 3){
274.  			/* leave ball, move chain under/over ball */
275.  			movobj(uchain, uball->ox, uball->oy);
276.  			goto nodrag;
277.  		}
278.  
279.  		if(inv_weight() + (int) uball->owt/2 > 0) {
280.  			pline("You cannot %sdrag the heavy iron ball.",
281.  			invent ? "carry all that and also " : "");
282.  			nomul(0);
283.  			return;
284.  		}
285.  
286.  		movobj(uball, uchain->ox, uchain->oy);
287.  		unpobj(uball);		/* BAH %% */
288.  		uchain->ox = u.ux;
289.  		uchain->oy = u.uy;
290.  		nomul(-2);
291.  		nomovemsg = "";
292.  	nodrag:	;
293.  	}
294.  	u.ux += u.dx;
295.  	u.uy += u.dy;
296.  	if(flags.run) {
297.  		if(tmpr->typ == DOOR ||
298.  		(xupstair == u.ux && yupstair == u.uy) ||
299.  		(xdnstair == u.ux && ydnstair == u.uy)
300.  #ifdef FOUNTAINS
301.  		|| IS_FOUNTAIN(levl[u.ux][u.uy].typ)
302.  #endif
303.  #ifdef NEWCLASS
304.  		|| IS_THRONE(levl[u.ux][u.uy].typ)
305.  #endif
306.  		)
307.  			nomul(0);
308.  	}
309.  
310.  	if(tmpr->typ == POOL && !Levitation)
311.  		drown();	/* not necessarily fatal */
312.  
313.  /*
314.  	if(u.udispl) {
315.  		u.udispl = 0;
316.  		newsym(u.ux0,u.uy0);
317.  	}
318.  */
319.  	if(!Blind) {
320.  #ifdef QUEST
321.  		setsee();
322.  #else
323.  		if(ust->lit) {
324.  			if(tmpr->lit) {
325.  				if(tmpr->typ == DOOR)
326.  					prl1(u.ux+u.dx,u.uy+u.dy);
327.  				else if(ust->typ == DOOR)
328.  					nose1(u.ux0-u.dx,u.uy0-u.dy);
329.  			} else {
330.  				unsee();
331.  				prl1(u.ux+u.dx,u.uy+u.dy);
332.  			}
333.  		} else {
334.  			if(tmpr->lit) setsee();
335.  			else {
336.  				prl1(u.ux+u.dx,u.uy+u.dy);
337.  				if(tmpr->typ == DOOR) {
338.  					if(u.dy) {
339.  						prl(u.ux-1,u.uy);
340.  						prl(u.ux+1,u.uy);
341.  					} else {
342.  						prl(u.ux,u.uy-1);
343.  						prl(u.ux,u.uy+1);
344.  					}
345.  				}
346.  			}
347.  			nose1(u.ux0-u.dx,u.uy0-u.dy);
348.  		}
349.  #endif /* QUEST /**/
350.  	} else {
351.  		pru();
352.  	}
353.  	if(!flags.nopick) pickup(1);
354.  	if(trap) dotrap(trap);		/* fall into pit, arrow trap, etc. */
355.  	(void) inshop();
356.  	if(!Blind) read_engr_at(u.ux,u.uy);
357.  }
358.  
359.  movobj(obj, ox, oy)
360.  register struct obj *obj;
361.  register int ox, oy;
362.  {
363.  	/* Some dirty programming to get display right */
364.  	freeobj(obj);
365.  	unpobj(obj);
366.  	obj->nobj = fobj;
367.  	fobj = obj;
368.  	obj->ox = ox;
369.  	obj->oy = oy;
370.  }
371.  
372.  dopickup(){
373.  	/* uswallow case added by GAN 01/29/87 */
374.  	if(u.uswallow)  {
375.  		pline("You pick up %s's tongue.",monnam(u.ustuck));
376.  		pline("But it's kind of slimy, so you drop it.");
377.  		return(1);
378.  	}
379.  	if(!g_at(u.ux,u.uy) && !o_at(u.ux,u.uy)) {
380.  		pline("There is nothing here to pick up.");
381.  		return(0);
382.  	}
383.  	if(Levitation) {
384.  		pline("You cannot reach the floor.");
385.  		return(1);
386.  	}
387.  	pickup(0);
388.  	return(1);
389.  }
390.  
391.  pickup(all)
392.  {
393.  	register struct gold *gold;
394.  	register struct obj *obj, *obj2;
395.  	register int wt;
396.  	char buf[BUFSZ];
397.  	register char *ip;
398.  	register char sym;
399.  	register int oletct = 0, iletct = 0;
400.  	char olets[20], ilets[20];
401.  
402.  	if(Levitation) return;
403.  #ifdef DGKMOD
404.  	if (all && !flags.pickup) {
405.  		int ct = 0;
406.  
407.  		for (obj = fobj; obj; obj = obj->nobj)
408.  			if (obj->ox == u.ux && obj->oy == u.uy)
409.  				if (!Punished || obj != uchain)
410.  					ct++;
411.  		/* If gold is the only thing here, pick it up.
412.  		 */
413.  		if (!ct && g_at(u.ux, u.uy)) {
414.  			if (flags.run) nomul(0);
415.  			while (gold = g_at(u.ux,u.uy)) {
416.  				pline("%ld gold piece%s.", gold->amount,
417.  					plur(gold->amount));
418.  				u.ugold += gold->amount;
419.  				flags.botl = 1;
420.  				freegold(gold);
421.  			}
422.  			if (Invisible) newsym(u.ux,u.uy);
423.  		}
424.  
425.  		/* If there are objects here, take a look.
426.  		 */
427.  		if (ct) {
428.  			if (flags.run)
429.  				nomul(0);
430.  			nscr();
431.  			if (ct < 5)
432.  				dolook();
433.  			else
434.  				pline("There are several objects here.");
435.  		}
436.  		return;
437.  	}
438.  #endif
439.  	while(gold = g_at(u.ux,u.uy)) {
440.  		pline("%ld gold piece%s.", gold->amount, plur(gold->amount));
441.  		u.ugold += gold->amount;
442.  		flags.botl = 1;
443.  		freegold(gold);
444.  		if(flags.run) nomul(0);
445.  		if(Invisible) newsym(u.ux,u.uy);
446.  	}
447.  	/* check for more than one object */
448.  	if(!all) {
449.  		register int ct = 0;
450.  
451.  		for(obj = fobj; obj; obj = obj->nobj)
452.  			if(obj->ox == u.ux && obj->oy == u.uy) ct++;
453.  		if(g_at(u.ux,u.uy))
454.  			ct++;
455.  		if(ct < 2)
456.  			all++;
457.  		else
458.  			pline("There are several objects here.");
459.  	}
460.  
461.  	/* added by GAN 10/24/86 to allow selective picking up */
462.  	if(!all)  {
463.  		register struct obj *otmp = fobj;
464.  
465.  		if(g_at(u.ux,u.uy)) ilets[iletct++] = '$';
466.  		ilets[iletct] = 0;
467.  		while(otmp) {
468.  			if(!index(ilets, otmp->olet) &&
469.  			   otmp->ox == u.ux && otmp->oy == u.uy)  {
470.  				ilets[iletct++] = otmp->olet;
471.  				ilets[iletct] = 0;
472.  			}
473.  			otmp = otmp->nobj;
474.  		}        
475.  		if(iletct == 1)
476.  			strcpy(buf,ilets);
477.  		else  {
478.  			ilets[iletct++] = ' ';
479.  			ilets[iletct++] = 'a';
480.  			ilets[iletct++] = 'A';
481.  			ilets[iletct] = 0;
482.  
483.  			if(iletct = 3)    
484.  			pline("What kinds of thing do you want to pick up? [%s]", ilets);
485.  			getlin(buf);
486.  			if(buf[0] == '\033') {
487.  				clrlin();
488.  				return(0);
489.  			}
490.  		}
491.  		ip = buf;
492.  		olets[0] = 0;
493.  		while(sym = *ip++){
494.  			/* new A function (selective all) added by
495.  			 * GAN 01/09/87
496.  			 */
497.  			if(sym == 'A')  {
498.  				for(oletct = 0; ilets[oletct] != ' '; oletct++)
499.  					olets[oletct] = ilets[oletct];
500.  				olets[oletct] = 0;
501.  				break;
502.  			}
503.  			if(sym == ' ') continue;
504.  			if(sym == 'a') all++; else
505.  			if(index(ilets, sym)){
506.  				if(!index(olets, sym)){
507.  					olets[oletct++] = sym;
508.  					olets[oletct] = 0;
509.  				}
510.  			}
511.  			else pline("There are no %c's here.", sym);
512.  		}        
513.  	}
514.  
515.  	if(all || index(olets,'$'))
516.  		while(gold = g_at(u.ux,u.uy)) {
517.  			pline("%ld gold piece%s.", gold->amount,
518.  			   plur(gold->amount));
519.  			u.ugold += gold->amount;
520.  			flags.botl = 1;
521.  			freegold(gold);
522.  			if(flags.run) nomul(0);
523.  			if(Invis) newsym(u.ux,u.uy);
524.  	}
525.  
526.  
527.  	for(obj = fobj; obj; obj = obj2) {
528.  	    obj2 = obj->nobj;   /* perhaps obj will be picked up */
529.  	    if(obj->ox == u.ux && obj->oy == u.uy) {
530.  		if(flags.run) nomul(0);
531.  
532.  		if(!all)  {
533.  			char c;
534.  		       
535.  			if(!index(olets,obj->olet)) continue;
536.   
537.  			pline("Pick up %s ? [ynaq]", doname(obj));
538.  			while(!index("ynaq ", (c = readchar())))
539.  				bell();
540.  			if(c == 'q') return;
541.  			if(c == 'n') continue;
542.  			if(c == 'a') all = 1;
543.  		}
544.   
545.  		if(obj->otyp == DEAD_COCKATRICE && !uarmg && u.usym != 'c') {
546.  		    pline("Touching the dead cockatrice is a fatal mistake.");
547.  		    pline("You turn to stone.");
548.  		    pline("You die...");
549.  		    killer = "cockatrice cadaver";
550.  		    done("died");
551.  		}        
552.   
553.  		if(obj->otyp == SCR_SCARE_MONSTER){
554.  		  if(!obj->spe) obj->spe = 1;
555.  		  else {
556.  		    /* Note: perhaps the 1st pickup failed: you cannot
557.  			carry anymore, and so we never dropped it -
558.  			lets assume that treading on it twice also
559.  			destroys the scroll */
560.  		    pline("The scroll turns to dust as you pick it up.");
561.  #ifdef KAA
562.  			if(!(objects[SCR_SCARE_MONSTER].oc_name_known) &&
563.  			   !(objects[SCR_SCARE_MONSTER].oc_uname))
564.  				docall(obj);
565.  #endif
566.  		    delobj(obj);
567.  		    continue;
568.  		  }
569.  		}
570.  		   
571.  		/* do not pick up uchain */
572.  		if(Punished && obj == uchain)
573.  			continue;
574.  
575.  				  
576.  		wt = inv_weight() + obj->owt;
577.  		if(wt > 0) {
578.  			if(obj->quan > 1) {
579.  				/* see how many we can lift */
580.  				extern struct obj *splitobj();
581.  				int savequan = obj->quan;
582.  				int iw = inv_weight();
583.  				int qq;
584.  				for(qq = 1; qq < savequan; qq++){
585.  					obj->quan = qq;
586.  					if(iw + weight(obj) > 0)
587.  						break;
588.  				}
589.  				obj->quan = savequan;
590.  				qq--;
591.  				/* we can carry qq of them */
592.  				if(!qq) goto too_heavy;
593.  			pline("You can only carry %s of the %s lying here.",
594.  					(qq == 1) ? "one" : "some",
595.  					doname(obj));
596.  				(void) splitobj(obj, qq);
597.  				/* note: obj2 is set already, so well never
598.  				 * encounter the other half; if it should be
599.  				 * otherwise then write
600.  				 *      obj2 = splitobj(obj,qq);
601.  				 */
602.  				goto lift_some;
603.  			}          
604.  		too_heavy:
605.  			pline("There %s %s here, but %s.",
606.  				(obj->quan == 1) ? "is" : "are",
607.  				doname(obj),
608.  				!invent ? "it is too heavy for you to lift"
609.  				/* There is no such word as "anymore". KAA */
610.  					: "you cannot carry any more");
611.  			break;
612.  		}
613.  	lift_some:
614.  		if(inv_cnt() >= 52) {
615.  		    pline("Your knapsack cannot accomodate any more items.");
616.  		    break;
617.  		}
618.  		if(wt > -5) pline("You have a little trouble lifting");
619.  		freeobj(obj);
620.  		if(Invisible) newsym(u.ux,u.uy);
621.  		addtobill(obj);       /* sets obj->unpaid if necessary */
622.  		{ int pickquan = obj->quan;
623.  		  int mergquan;
624.  #ifdef KAA
625.  		if(!Blind) if(obj->olet != WEAPON_SYM) obj->dknown = 1;
626.  #else
627.  		if(!Blind) obj->dknown = 1;     /* this is done by prinv(),
628.  				 but addinv() needs it already for merging */
629.  #endif
630.  		obj = addinv(obj);    /* might merge it with other objects */
631.  		  mergquan = obj->quan;
632.  		  obj->quan = pickquan; /* to fool prinv() */
633.  		prinv(obj);
634.  		  obj->quan = mergquan;
635.  		}
636.  	    }
637.  	}
638.  }
639.  
640.  /* stop running if we see something interesting */
641.  /* turn around a corner if that is the only way we can proceed */
642.  /* do not turn left or right twice */
643.  lookaround(){
644.  register x,y,i,x0,y0,m0,i0 = 9;
645.  register int corrct = 0, noturn = 0;
646.  register struct monst *mtmp;
647.  #ifdef lint
648.  	/* suppress "used before set" message */
649.  	x0 = y0 = 0;
650.  #endif
651.  	if(Blind || flags.run == 0) return;
652.  	if(flags.run == 1 && levl[u.ux][u.uy].typ == ROOM) return;
653.  #ifdef QUEST
654.  	if(u.ux0 == u.ux+u.dx && u.uy0 == u.uy+u.dy) goto stop;
655.  #endif
656.  	for(x = u.ux-1; x <= u.ux+1; x++) for(y = u.uy-1; y <= u.uy+1; y++){
657.  		if(x == u.ux && y == u.uy) continue;
658.  		if(!levl[x][y].typ) continue;
659.  		if((mtmp = m_at(x,y)) && !mtmp->mimic &&
660.  		    (!mtmp->minvis || See_invisible)){
661.  			if(!mtmp->mtame || (x == u.ux+u.dx && y == u.uy+u.dy))
662.  				goto stop;
663.  		} else mtmp = 0; /* invisible M cannot influence us */
664.  		if(x == u.ux-u.dx && y == u.uy-u.dy) continue;
665.  #ifdef DGK
666.  		{
667.  		register uchar sym = levl[x][y].scrsym;
668.  
669.  		if (sym == symbol.vwall || sym == symbol.hwall
670.  			|| sym == symbol.room || sym == ' ' || IS_CORNER(sym))
671.  			continue;
672.  		else if (sym == symbol.door) {
673.  			if(x != u.ux && y != u.uy) continue;
674.  			if(flags.run != 1) goto stop;
675.  			goto corr;
676.  		} else if (sym == symbol.corr) {
677.  		corr:
678.  			if(flags.run == 1 || flags.run == 3) {
679.  				i = DIST(x,y,u.ux+u.dx,u.uy+u.dy);
680.  				if(i > 2) continue;
681.  				if(corrct == 1 && DIST(x,y,x0,y0) != 1)
682.  					noturn = 1;
683.  				if(i < i0) {
684.  					i0 = i;
685.  					x0 = x;
686.  					y0 = y;
687.  					m0 = mtmp ? 1 : 0;
688.  				}
689.  			}
690.  			corrct++;
691.  			continue;
692.  		} else if (sym == '^') {
693.  			if(flags.run == 1) goto corr;	/* if you must */
694.  			if(x == u.ux+u.dx && y == u.uy+u.dy) goto stop;
695.  			continue;
696.  		} else {		/* e.g. objects or trap or stairs */
697.  			if(flags.run == 1) goto corr;
698.  			if(mtmp) continue;		/* d */
699.  		}
700.  		stop:
701.  			nomul(0);
702.  			return;
703.  		}
704.  #else
705.  		switch(levl[x][y].scrsym){
706.  		case '|':
707.  		case '-':
708.  		case '.':
709.  		case ' ':
710.  			break;
711.  		case '+':
712.  			if(x != u.ux && y != u.uy) break;
713.  			if(flags.run != 1) goto stop;
714.  			/* fall into next case */
715.  		case CORR_SYM:
716.  		corr:
717.  			if(flags.run == 1 || flags.run == 3) {
718.  				i = DIST(x,y,u.ux+u.dx,u.uy+u.dy);
719.  				if(i > 2) break;
720.  				if(corrct == 1 && DIST(x,y,x0,y0) != 1)
721.  					noturn = 1;
722.  				if(i < i0) {
723.  					i0 = i;
724.  					x0 = x;
725.  					y0 = y;
726.  					m0 = mtmp ? 1 : 0;
727.  				}
728.  			}
729.  			corrct++;
730.  			break;
731.  		case '^':
732.  			if(flags.run == 1) goto corr;	/* if you must */
733.  			if(x == u.ux+u.dx && y == u.uy+u.dy) goto stop;
734.  			break;
735.  		default:	/* e.g. objects or trap or stairs */
736.  			if(flags.run == 1) goto corr;
737.  			if(mtmp) break;		/* d */
738.  		stop:
739.  			nomul(0);
740.  			return;
741.  		}
742.  #endif
743.  	}
744.  #ifdef QUEST
745.  	if(corrct > 0 && (flags.run == 4 || flags.run == 5)) goto stop;
746.  #endif
747.  	if(corrct > 1 && flags.run == 2) goto stop;
748.  	if((flags.run == 1 || flags.run == 3) && !noturn && !m0 && i0 &&
749.  		(corrct == 1 || (corrct == 2 && i0 == 1))) {
750.  		/* make sure that we do not turn too far */
751.  		if(i0 == 2) {
752.  		    if(u.dx == y0-u.uy && u.dy == u.ux-x0)
753.  			i = 2;		/* straight turn right */
754.  		    else
755.  			i = -2;		/* straight turn left */
756.  		} else if(u.dx && u.dy) {
757.  		    if((u.dx == u.dy && y0 == u.uy) ||
758.  			(u.dx != u.dy && y0 != u.uy))
759.  			i = -1;		/* half turn left */
760.  		    else
761.  			i = 1;		/* half turn right */
762.  		} else {
763.  		    if((x0-u.ux == y0-u.uy && !u.dy) ||
764.  			(x0-u.ux != y0-u.uy && u.dy))
765.  			i = 1;		/* half turn right */
766.  		    else
767.  			i = -1;		/* half turn left */
768.  		}
769.  		i += u.last_str_turn;
770.  		if(i <= 2 && i >= -2) {
771.  			u.last_str_turn = i;
772.  			u.dx = x0-u.ux, u.dy = y0-u.uy;
773.  		}
774.  	}
775.  }
776.  
777.  /* something like lookaround, but we are not running */
778.  /* react only to monsters that might hit us */
779.  monster_nearby() {
780.  register int x,y;
781.  register struct monst *mtmp;
782.  	if(!Blind)
783.  	for(x = u.ux-1; x <= u.ux+1; x++) for(y = u.uy-1; y <= u.uy+1; y++){
784.  		if(x == u.ux && y == u.uy) continue;
785.  		if((mtmp = m_at(x,y)) && !mtmp->mimic && !mtmp->mtame &&
786.  			!mtmp->mpeaceful && !index("Ea", mtmp->data->mlet) &&
787.  			!mtmp->mfroz && !mtmp->msleep &&  /* aplvax!jcn */
788.  			(!mtmp->minvis || See_invisible))
789.  			return(1);
790.  	}
791.  	return(0);
792.  }
793.  
794.  #ifdef QUEST
795.  cansee(x,y) xchar x,y; {
796.  register int dx,dy,adx,ady,sdx,sdy,dmax,d;
797.  	if(Blind) return(0);
798.  	if(!isok(x,y)) return(0);
799.  	d = dist(x,y);
800.  	if(d < 3) return(1);
801.  	if(d > u.uhorizon*u.uhorizon) return(0);
802.  	if(!levl[x][y].lit)
803.  		return(0);
804.  	dx = x - u.ux;	adx = abs(dx);	sdx = sgn(dx);
805.  	dy = y - u.uy;  ady = abs(dy);	sdy = sgn(dy);
806.  	if(dx == 0 || dy == 0 || adx == ady){
807.  		dmax = (dx == 0) ? ady : adx;
808.  		for(d = 1; d <= dmax; d++)
809.  			if(!rroom(sdx*d,sdy*d))
810.  				return(0);
811.  		return(1);
812.  	} else if(ady > adx){
813.  		for(d = 1; d <= ady; d++){
814.  			if(!rroom(sdx*( (d*adx)/ady ), sdy*d) ||
815.  			   !rroom(sdx*( (d*adx-1)/ady+1 ), sdy*d))
816.  				return(0);
817.  		}
818.  		return(1);
819.  	} else {
820.  		for(d = 1; d <= adx; d++){
821.  			if(!rroom(sdx*d, sdy*( (d*ady)/adx )) ||
822.  			   !rroom(sdx*d, sdy*( (d*ady-1)/adx+1 )))
823.  				return(0);
824.  		}
825.  		return(1);
826.  	}
827.  }
828.  
829.  rroom(x,y) register int x,y; {
830.  	return(IS_ROOM(levl[u.ux+x][u.uy+y].typ));
831.  }
832.  
833.  #else
834.  
835.  cansee(x,y) xchar x,y; {
836.  	if(Blind || u.uswallow) return(0);
837.  	if(dist(x,y) < 3) return(1);
838.  	if(levl[x][y].lit && seelx <= x && x <= seehx && seely <= y &&
839.  		y <= seehy) return(1);
840.  	return(0);
841.  }
842.  #endif /* QUEST /**/
843.  
844.  sgn(a) register int a; {
845.  	return((a > 0) ? 1 : (a == 0) ? 0 : -1);
846.  }
847.  
848.  #ifdef QUEST
849.  setsee()
850.  {
851.  	register x,y;
852.  
853.  	if(Blind) {
854.  		pru();
855.  		return;
856.  	}
857.  	for(y = u.uy-u.uhorizon; y <= u.uy+u.uhorizon; y++)
858.  		for(x = u.ux-u.uhorizon; x <= u.ux+u.uhorizon; x++) {
859.  			if(cansee(x,y))
860.  				prl(x,y);
861.  	}
862.  }
863.  
864.  #else
865.  
866.  setsee()
867.  {
868.  	register x,y;
869.  
870.  	if(Blind) {
871.  		pru();
872.  		return;
873.  	}
874.  	if(!levl[u.ux][u.uy].lit) {
875.  		seelx = u.ux-1;
876.  		seehx = u.ux+1;
877.  		seely = u.uy-1;
878.  		seehy = u.uy+1;
879.  	} else {
880.  		for(seelx = u.ux; levl[seelx-1][u.uy].lit; seelx--);
881.  		for(seehx = u.ux; levl[seehx+1][u.uy].lit; seehx++);
882.  		for(seely = u.uy; levl[u.ux][seely-1].lit; seely--);
883.  		for(seehy = u.uy; levl[u.ux][seehy+1].lit; seehy++);
884.  	}
885.  	for(y = seely; y <= seehy; y++)
886.  		for(x = seelx; x <= seehx; x++) {
887.  			prl(x,y);
888.  	}
889.  	if(!levl[u.ux][u.uy].lit) seehx = 0; /* seems necessary elsewhere */
890.  	else {
891.  	    if(seely == u.uy) for(x = u.ux-1; x <= u.ux+1; x++) prl(x,seely-1);
892.  	    if(seehy == u.uy) for(x = u.ux-1; x <= u.ux+1; x++) prl(x,seehy+1);
893.  	    if(seelx == u.ux) for(y = u.uy-1; y <= u.uy+1; y++) prl(seelx-1,y);
894.  	    if(seehx == u.ux) for(y = u.uy-1; y <= u.uy+1; y++) prl(seehx+1,y);
895.  	}
896.  }
897.  #endif /* QUEST /**/
898.  
899.  nomul(nval)
900.  register nval;
901.  {
902.  #ifdef DGKMOD
903.  	if(multi < nval) return;	/* This is a bug fix by ab@unido */
904.  #else
905.  	if(multi < 0) return;
906.  #endif
907.  	multi = nval;
908.  	flags.mv = flags.run = 0;
909.  }
910.  
911.  abon()
912.  {
913.  #ifdef KAA
914.  	if (u.usym != '@') return(mons[u.umonnum].mlevel-3);
915.  #endif
916.  	if(u.ustr == 3) return(-3);
917.  	else if(u.ustr < 6) return(-2);
918.  	else if(u.ustr < 8) return(-1);
919.  	else if(u.ustr < 17) return(0);
920.  	else if(u.ustr < 69) return(1);	/* up to 18/50 */
921.  	else if(u.ustr < 118) return(2);
922.  	else return(3);
923.  }
924.  
925.  dbon()
926.  {
927.  	if (u.usym != '@') return(0);
928.  
929.  	if(u.ustr < 6) return(-1);
930.  	else if(u.ustr < 16) return(0);
931.  	else if(u.ustr < 18) return(1);
932.  	else if(u.ustr == 18) return(2);	/* up to 18 */
933.  	else if(u.ustr < 94) return(3);		/* up to 18/75 */
934.  	else if(u.ustr < 109) return(4);	/* up to 18/90 */
935.  	else if(u.ustr < 118) return(5);	/* up to 18/99 */
936.  	else return(6);
937.  }
938.  
939.  losestr(num)	/* may kill you; cause may be poison or monster like 'A' */
940.  register num;
941.  {
942.  	u.ustr -= num;
943.  	while(u.ustr < 3) {
944.  		u.ustr++;
945.  		u.uhp -= 6;
946.  		u.uhpmax -= 6;
947.  	}
948.  	flags.botl = 1;
949.  }
950.  
951.  losehp(n,knam)
952.  register n;
953.  register char *knam;
954.  {
955.  #ifdef KAA
956.  	if (u.mtimedone) {
957.  		u.mh -= n;
958.  		if (u.mhmax < u.mh) u.mhmax = u.mh;
959.  		flags.botl = 1;
960.  		if (u.mh < 1) rehumanize();
961.  		return(0);
962.  	}
963.  #endif
964.  	u.uhp -= n;
965.  	if(u.uhp > u.uhpmax)
966.  		u.uhpmax = u.uhp;	/* perhaps n was negative */
967.  	flags.botl = 1;
968.  	if(u.uhp < 1) {
969.  		killer = knam;	/* the thing that killed you */
970.  		pline("you died");
971.  		done("died");
972.  	}
973.  }
974.  
975.  losehp_m(n,mtmp)
976.  register n;
977.  register struct monst *mtmp;
978.  {
979.  #ifdef KAA
980.  	if (u.mtimedone) {
981.  		u.mh -= n;
982.  		flags.botl = 1;
983.  		if (u.mh < 1) rehumanize();
984.  		return;
985.  	}
986.  #endif
987.  	u.uhp -= n;
988.  	flags.botl = 1;
989.  	if(u.uhp < 1)
990.  		done_in_by(mtmp);
991.  }
992.  
993.  losexp()	/* hit by V or W */
994.  {
995.  	register num;
996.  	extern long newuexp();
997.  
998.  	if (u.usym == 'V' || u.usym=='W') return;
999.  
1000. 	if(u.ulevel > 1)
1001. 		pline("Goodbye level %u.", u.ulevel--);
1002. 	else
1003. 		u.uhp = -1;
1004. 	num = rnd(10);
1005. 	u.uhp -= num;
1006. 	u.uhpmax -= num;
1007. #ifdef SPELLS
1008. 	num = rnd(u.ulevel/2+1) + 1;		/* M. Stephenson */
1009. 	u.uen -= num;
1010. 	if (u.uen < 0)		u.uen = 0;
1011. 	u.uenmax -= num;
1012. 	if (u.uenmax < 0)	u.uenmax = 0;
1013. #endif
1014. 	u.uexp = newuexp();
1015. 	flags.botl = 1;
1016. }
1017. 
1018. inv_weight(){
1019. register struct obj *otmp = invent;
1020. register int wt = (u.ugold + 500)/1000;
1021. register int carrcap;
1022. #ifdef KAA
1023. 	if (u.mtimedone) {
1024. 		if (u.usym == '9') carrcap = MAX_CARR_CAP * 4;
1025. 		else if (u.usym == 'N') carrcap = MAX_CARR_CAP;
1026. 		else if (mons[u.umonnum].mlevel <= 3)
1027. 			carrcap = 5*mons[u.umonnum].mlevel + 30;
1028. 		else carrcap = 5*mons[u.umonnum].mlevel + 100;
1029. 	}
1030. #endif
1031. 	if(Levitation)			/* pugh@cornell */
1032. 		carrcap = MAX_CARR_CAP;
1033. 	else {
1034. 		carrcap = 5*(((u.ustr > 18) ? 20 : u.ustr) + u.ulevel);
1035. 		if(carrcap > MAX_CARR_CAP) carrcap = MAX_CARR_CAP;
1036. 		if(Wounded_legs & LEFT_SIDE) carrcap -= 10;
1037. 		if(Wounded_legs & RIGHT_SIDE) carrcap -= 10;
1038. 	}
1039. 	while(otmp){
1040. 		wt += otmp->owt;
1041. 		otmp = otmp->nobj;
1042. 	}
1043. 	return(wt - carrcap);
1044. }
1045. 
1046. inv_cnt(){
1047. register struct obj *otmp = invent;
1048. register int ct = 0;
1049. 	while(otmp){
1050. 		ct++;
1051. 		otmp = otmp->nobj;
1052. 	}
1053. 	return(ct);
1054. }
1055. 
1056. long
1057. newuexp()
1058. {
1059. 	return(10*(1L << (u.ulevel-1)));
1060. }