Source:Hack 1.0/hack.shk.c

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Below is the full text to hack.shk.c from the source code of Hack 1.0. To link to a particular line, write [[Hack 1.0/hack.shk.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, 1984. */
2.    
3.    #include "hack.h"
4.    #ifdef QUEST
5.    int shlevel = 0;
6.    struct monst *shopkeeper = 0;
7.    struct obj *billobjs = 0;
8.    obfree(obj,merge) register struct obj *obj, *merge; {
9.    	free((char *) obj);
10.   }
11.   inshop(){ return(0); }
12.   addtobill(){}
13.   subfrombill(){}
14.   splitbill(){}
15.   dopay(){}
16.   paybill(){}
17.   doinvbill(){}
18.   shkdead(){}
19.   shk_move(){ return(0); }
20.   setshk(){}
21.   char *shkname(){ return(""); }
22.   
23.   #else
24.   #include	"hack.mfndpos.h"
25.   #include	"def.eshk.h"
26.   
27.   #define	ESHK	((struct eshk *)(&(shopkeeper->mextra[0])))
28.   #define	NOTANGRY	shopkeeper->mpeaceful
29.   #define	ANGRY	!NOTANGRY
30.   
31.   extern char plname[];
32.   extern struct obj *o_on();
33.   struct monst *shopkeeper = 0;
34.   struct bill_x *bill;
35.   int shlevel = 0;	/* level of this shopkeeper */
36.   struct obj *billobjs;	/* objects on bill with bp->useup */
37.   /* #define	billobjs	shopkeeper->minvent
38.      doesnt work so well, since we do not want these objects to be dropped
39.      when the shopkeeper is killed.
40.      (See also the save and restore routines.)
41.    */
42.   
43.   /* invariants: obj->unpaid iff onbill(obj) [unless bp->useup]
44.   		obj->quan <= bp->bquan
45.    */
46.   
47.   long int total;
48.   
49.   char shtypes[] = "=/)%?!["; /* 8 shoptypes: 7 specialized, 1 mixed */
50.   char *shopnam[] = {
51.   	"engagement ring", "walking cane", "antique weapon",
52.   	"delicatessen", "second hand book", "liquor",
53.   	"used armor", "assorted antiques"
54.   };
55.   
56.   char *
57.   shkname() {
58.   	return(ESHK->shknam);
59.   }
60.   
61.   shkdead(){
62.   	rooms[ESHK->shoproom].rtype = 0;
63.   	setpaid();
64.   	shopkeeper = 0;
65.   	bill = (struct bill_x *) -1000;	/* dump core when referenced */
66.   }
67.   
68.   setpaid(){	/* caller has checked that shopkeeper exists */
69.   register struct obj *obj;
70.   	for(obj = invent; obj; obj = obj->nobj)
71.   		obj->unpaid = 0;
72.   	for(obj = fobj; obj; obj = obj->nobj)
73.   		obj->unpaid = 0;
74.   	while(obj = billobjs){
75.   		billobjs = obj->nobj;
76.   		free((char *) obj);
77.   	}
78.    ESHK->billct = 0;
79.   }
80.   
81.   addupbill(){	/* delivers result in total */
82.   		/* caller has checked that shopkeeper exists */
83.   register ct = ESHK->billct;
84.   register struct bill_x *bp = bill;
85.   	total = 0;
86.   	while(ct--){
87.   		total += bp->price * bp->bquan;
88.   		bp++;
89.   	}
90.   }
91.   
92.   inshop(){
93.   register tmp = inroom(u.ux,u.uy);
94.   	if(tmp < 0 || rooms[tmp].rtype < 8) {
95.   		u.uinshop = 0;
96.   		if(shopkeeper && ESHK->billct){
97.   			pline("Somehow you escaped the shop without paying!");
98.   			addupbill();
99.   			pline("You stole for a total worth of %lu zorkmids.",
100.  				total);
101.  			ESHK->robbed += total;
102.  			setpaid();
103.  		}
104.  		if(tmp >= 0 && rooms[tmp].rtype == 7){
105.  			register struct monst *mtmp;
106.  			pline("Welcome to David's treasure zoo!");
107.  			rooms[tmp].rtype = 0;
108.  			for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
109.  				if(!rn2(4)) mtmp->msleep = 0;
110.  		}
111.  	} else {
112.  		if(shlevel != dlevel) setshk();
113.  		if(!shopkeeper) u.uinshop = 0;
114.  		else if(!u.uinshop){
115.  			if(!ESHK->visitct ||
116.  				strncmp(ESHK->customer, plname, PL_NSIZ)){
117.  				/* He seems to be new here */
118.  				ESHK->visitct = 0;
119.  				(void) strncpy(ESHK->customer,plname,PL_NSIZ);
120.  				NOTANGRY = 1;
121.  			}
122.  			pline("Hello %s! Welcome%s to %s's %s shop!",
123.  				plname,
124.  				ESHK->visitct++ ? " again" : "",
125.  				shkname(),
126.  				shopnam[rooms[ESHK->shoproom].rtype - 8] );
127.  			u.uinshop = 1;
128.  		}
129.  	}
130.   return(u.uinshop);
131.  }
132.  
133.  setshk(){
134.  register struct monst *mtmp;
135.  	for(mtmp = fmon; mtmp; mtmp = mtmp->nmon) if(mtmp->isshk){
136.  		shopkeeper = mtmp;
137.  		bill = &(ESHK->bill[0]);
138.  		shlevel = dlevel;
139.  		if(ANGRY && strncpy(ESHK->customer,plname,PL_NSIZ))
140.  			NOTANGRY = 1;
141.  		billobjs = 0;
142.  		return;
143.  	}
144.  	shopkeeper = 0;
145.  	bill = (struct bill_x *) -1000;	/* dump core when referenced */
146.  }
147.  
148.  struct bill_x *
149.  onbill(obj) register struct obj *obj; {
150.  register struct bill_x *bp;
151.  	if(!shopkeeper) return(0);
152.  	for(bp = bill; bp < &bill[ESHK->billct]; bp++)
153.  		if(bp->bo_id == obj->o_id) {
154.  			if(!obj->unpaid) pline("onbill: paid obj on bill?");
155.  			return(bp);
156.  		}
157.  	if(obj->unpaid) pline("onbill: unpaid obj not on bill?");
158.  	return(0);
159.  }
160.  
161.  /* called with two args on merge */
162.  obfree(obj,merge) register struct obj *obj, *merge; {
163.  register struct bill_x *bp = onbill(obj);
164.  register struct bill_x *bpm;
165.  	if(bp) {
166.  		if(!merge){
167.  			bp->useup = 1;
168.  			obj->unpaid = 0;	/* only for doinvbill */
169.  			obj->nobj = billobjs;
170.  			billobjs = obj;
171.  			return;
172.  		}
173.  		bpm = onbill(merge);
174.  		if(!bpm){
175.  			/* this used to be a rename */
176.  			impossible();
177.  			return;
178.  		} else {
179.  			/* this was a merger */
180.  			bpm->bquan += bp->bquan;
181.  			ESHK->billct--;
182.  			*bp = bill[ESHK->billct];
183.  		}
184.  	}
185.   free((char *) obj);
186.  }
187.  
188.  pay(tmp) long tmp; {
189.  	u.ugold -= tmp;
190.  	shopkeeper->mgold += tmp;
191.  	flags.botl = 1;
192.  }
193.  
194.  dopay(){
195.  long ltmp;
196.  register struct bill_x *bp;
197.  int shknear = (shlevel == dlevel && shopkeeper &&
198.  	dist(shopkeeper->mx,shopkeeper->my) < 3);
199.  int pass, tmp;
200.  
201.  	multi = 0;
202.  	if(!inshop() && !shknear) {
203.  		pline("You are not in a shop.");
204.  		return(0);
205.  	}
206.  	if(!shknear &&
207.  	    inroom(shopkeeper->mx,shopkeeper->my) != ESHK->shoproom){
208.  		pline("There is nobody here to receive your payment.");
209.  		return(0);
210.  	}
211.  	if(!ESHK->billct){
212.  		pline("You do not owe %s anything.", monnam(shopkeeper));
213.  		if(!u.ugold){
214.  			pline("Moreover, you have no money.");
215.  			return(1);
216.  		}
217.  		if(ESHK->robbed){
218.  			pline("But since the shop has been robbed recently,");
219.  			pline("you %srepay %s's expenses.",
220.  				(u.ugold < ESHK->robbed) ? "partially " : "",
221.  				monnam(shopkeeper));
222.  			pay((u.ugold<ESHK->robbed) ? u.ugold : ESHK->robbed);
223.  			ESHK->robbed = 0;
224.  			return(1);
225.  		}
226.  		if(ANGRY){
227.  			pline("But in order to appease %s,",
228.  				amonnam(shopkeeper, "angry"));
229.  			if(u.ugold >= 1000){
230.  				ltmp = 1000;
231.  				pline(" you give him 1000 gold pieces.");
232.  			} else {
233.  				ltmp = u.ugold;
234.  				pline(" you give him all your money.");
235.  			}
236.  			pay(ltmp);
237.  			if(rn2(3)){
238.  				pline("%s calms down.", Monnam(shopkeeper));
239.  				NOTANGRY = 1;
240.  			} else	pline("%s is as angry as ever.",
241.   	Monnam(shopkeeper));
242.  		}
243.   return(1);
244.  	}
245.  	for(pass = 0; pass <= 1; pass++) {
246.  		tmp = 0;
247.  		while(tmp < ESHK->billct) {
248.  			bp = &bill[tmp];
249.  			if(!pass && !bp->useup) {
250.  				tmp++;
251.  				continue;
252.  			}
253.  			if(!dopayobj(bp)) return(1);
254.  			bill[tmp] = bill[--ESHK->billct];
255.  		}
256.  	}
257.  	pline("Thank you for shopping in %s's %s store!",
258.  		shkname(),
259.  		shopnam[rooms[ESHK->shoproom].rtype - 8]);
260.  	NOTANGRY = 1;
261.  	return(1);
262.  }
263.  
264.  /* return 1 if paid successfully */
265.  /*        0 if not enough money */
266.  /*       -1 if object could not be found (but was paid) */
267.  dopayobj(bp) register struct bill_x *bp; {
268.  register struct obj *obj;
269.  long ltmp;
270.  
271.  	/* find the object on one of the lists */
272.  	if(bp->useup)
273.  		obj = o_on(bp->bo_id, billobjs);
274.  	else if(!(obj = o_on(bp->bo_id, invent)) &&
275.  		!(obj = o_on(bp->bo_id, fobj)) &&
276.  		!(obj = o_on(bp->bo_id, fcobj))) {
277.  		    register struct monst *mtmp;
278.  		    for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
279.  			if(obj = o_on(bp->bo_id, mtmp->minvent))
280.  			    break;
281.  		    for(mtmp = fallen_down; mtmp; mtmp = mtmp->nmon)
282.  			if(obj = o_on(bp->bo_id, mtmp->minvent))
283.  			    break;
284.  		}
285.  	if(!obj) {
286.  		pline("Shopkeeper administration out of order.");
287.  		impossible();
288.  		setpaid();	/* be nice to the player */
289.  		return(0);
290.  	}
291.  
292.  	if(!obj->unpaid && !bp->useup){
293.  		pline("Paid object on bill??");
294.  		impossible();
295.  		return(1);
296.  	}
297.  	obj->unpaid = 0;
298.  	ltmp = bp->price * bp->bquan;
299.  	if(ANGRY) ltmp += ltmp/3;
300.  	if(u.ugold < ltmp){
301.  		pline("You don't have gold enough to pay %s.",
302.  			doname(obj));
303.  		obj->unpaid = 1;
304.  		return(0);
305.  	}
306.  	pay(ltmp);
307.  	pline("You bought %s for %ld gold piece%s.",
308.  		doname(obj), ltmp, (ltmp == 1) ? "" : "s");
309.  	if(bp->useup) {
310.  		register struct obj *otmp = billobjs;
311.  		if(obj == billobjs)
312.  			billobjs = obj->nobj;
313.  		else {
314.  			while(otmp && otmp->nobj != obj) otmp = otmp->nobj;
315.  			if(otmp) otmp->nobj = obj->nobj;
316.  			else pline("Error in shopkeeper administration");
317.  		}
318.   free((char *) obj);
319.  	}
320.   return(1);
321.  }
322.  
323.  /* routine called after dying (or quitting) with nonempty bill */
324.  paybill(){
325.  	if(shopkeeper && ESHK->billct){
326.  		addupbill();
327.  		if(total > u.ugold){
328.  			shopkeeper->mgold += u.ugold;
329.  			u.ugold = 0;
330.  		pline("%s comes and takes all your possessions.",
331.  			Monnam(shopkeeper));
332.  		} else {
333.  			u.ugold -= total;
334.  			shopkeeper->mgold += total;
335.  	pline("%s comes and takes the %ld zorkmids you owed him.",
336.  		Monnam(shopkeeper), total);
337.  		}
338.   setpaid();	/* in case we create bones */
339.  	}
340.  }
341.  
342.  /* called in hack.c when we pickup an object */
343.  addtobill(obj) register struct obj *obj; {
344.  register struct bill_x *bp;
345.  	if(!inshop() || (u.ux == ESHK->shk.x && u.uy == ESHK->shk.y) ||
346.  		(u.ux == ESHK->shd.x && u.uy == ESHK->shd.y) ||
347.  		onbill(obj) /* perhaps we threw it away earlier */
348.  	) return;
349.  	if(ESHK->billct == BILLSZ){
350.  		pline("You got that for free!");
351.  		return;
352.  	}
353.  	bp = &bill[ESHK->billct];
354.  	bp->bo_id = obj->o_id;
355.  	bp->bquan = obj->quan;
356.  	bp->useup = 0;
357.  	bp->price = getprice(obj);
358.  	ESHK->billct++;
359.  	obj->unpaid = 1;
360.  }
361.  
362.  splitbill(obj,otmp) register struct obj *obj, *otmp; {
363.  	/* otmp has been split off from obj */
364.  register struct bill_x *bp;
365.  register int tmp;
366.  	bp = onbill(obj);
367.  	if(!bp) { impossible(); return; }
368.  	if(bp->bquan < otmp->quan) {
369.  		pline("Negative quantity on bill??");
370.  		impossible();
371.  	}
372.  	if(bp->bquan == otmp->quan) {
373.  		pline("Zero quantity on bill??");
374.  		impossible();
375.  	}
376.  	bp->bquan -= otmp->quan;
377.  
378.  	/* addtobill(otmp); */
379.  	if(ESHK->billct == BILLSZ) otmp->unpaid = 0;
380.  	else {
381.  		tmp = bp->price;
382.  		bp = &bill[ESHK->billct];
383.  		bp->bo_id = otmp->o_id;
384.  		bp->bquan = otmp->quan;
385.  		bp->useup = 0;
386.  		bp->price = tmp;
387.  		ESHK->billct++;
388.  	}
389.  }
390.  
391.  subfrombill(obj) register struct obj *obj; {
392.  long ltmp;
393.  register int tmp;
394.  register struct obj *otmp;
395.  register struct bill_x *bp;
396.  	if(!inshop() || (u.ux == ESHK->shk.x && u.uy == ESHK->shk.y) ||
397.  		(u.ux == ESHK->shd.x && u.uy == ESHK->shd.y))
398.  		return;
399.  	if((bp = onbill(obj)) != 0){
400.  		obj->unpaid = 0;
401.  		if(bp->bquan > obj->quan){
402.  			otmp = newobj(0);
403.  			*otmp = *obj;
404.  			bp->bo_id = otmp->o_id = flags.ident++;
405.  			otmp->quan = (bp->bquan -= obj->quan);
406.  			otmp->owt = 0;	/* superfluous */
407.  			otmp->onamelth = 0;
408.  			bp->useup = 1;
409.  			otmp->nobj = billobjs;
410.  			billobjs = otmp;
411.  			return;
412.  		}
413.  		ESHK->billct--;
414.  		*bp = bill[ESHK->billct];
415.  		return;
416.  	}
417.  	if(obj->unpaid){
418.  		pline("%s didn't notice.", Monnam(shopkeeper));
419.  		obj->unpaid = 0;
420.  		return;		/* %% */
421.  	}
422.  	/* he dropped something of his own - probably wants to sell it */
423.  	if(shopkeeper->msleep || shopkeeper->mfroz ||
424.  		inroom(shopkeeper->mx,shopkeeper->my) != ESHK->shoproom)
425.  		return;
426.  	if(ESHK->billct == BILLSZ ||
427.  	  ((tmp = shtypes[rooms[ESHK->shoproom].rtype-8]) && tmp != obj->olet)
428.  	  || index("_0", obj->olet)) {
429.  		pline("%s seems not interested.", Monnam(shopkeeper));
430.  		return;
431.  	}
432.  	ltmp = getprice(obj) * obj->quan;
433.  	if(ANGRY) {
434.  		ltmp /= 3;
435.  		NOTANGRY = 1;
436.  	} else	ltmp /= 2;
437.  	if(ESHK->robbed){
438.  		if((ESHK->robbed -= ltmp) < 0) ESHK->robbed = 0;
439.  pline("Thank you for your contribution to restock this recently plundered shop.");
440.  		return;
441.  	}
442.  	if(ltmp > shopkeeper->mgold) ltmp = shopkeeper->mgold;
443.  	pay(-ltmp);
444.  	if(!ltmp)
445.  	pline("%s gladly accepts %s but cannot pay you at present.",
446.  		Monnam(shopkeeper), doname(obj));
447.  	else
448.  	pline("You sold %s and got %ld gold piece%s.", doname(obj), ltmp,
449.  		(ltmp == 1) ? "" : "s");
450.  }
451.  
452.  doinvbill(cl) int cl; {
453.  register unsigned tmp,cnt = 0;
454.  register struct obj *obj;
455.  char buf[BUFSZ];
456.  	if(!shopkeeper) return;
457.  	for(tmp = 0; tmp < ESHK->billct; tmp++) if(bill[tmp].useup) cnt++;
458.  	if(!cnt) return;
459.  	if(!cl && !flags.oneline) cls();
460.  	if(!flags.oneline) puts("\n\nUnpaid articles already used up:\n");
461.  	for(tmp = 0; tmp < ESHK->billct; tmp++) if(bill[tmp].useup){
462.  		for(obj = billobjs; obj; obj = obj->nobj)
463.  			if(obj->o_id == bill[tmp].bo_id) break;
464.  		if(!obj) {
465.  			pline("Bad shopkeeper administration.");
466.  			impossible();
467.  			return;
468.  		}
469.  		(void) sprintf(buf, "* -  %s", doname(obj));
470.  		for(cnt=0; buf[cnt]; cnt++);
471.  		while(cnt < 50) buf[cnt++] = ' ';
472.  		(void) sprintf(&buf[cnt], " %5d zorkmids",
473.  				bill[tmp].price * bill[tmp].bquan);
474.  		if(flags.oneline)
475.  			pline(buf);
476.  		else
477.  			puts(buf);
478.  	}
479.  	if(!cl && !flags.oneline) {
480.  		getret();
481.  		docrt();
482.  	}
483.  }
484.  
485.  getprice(obj) register struct obj *obj; {
486.  register int tmp,ac;
487.  	switch(obj->olet){
488.  		case AMULET_SYM:
489.  			tmp = 10*rnd(500);
490.  			break;
491.  		case TOOL_SYM:
492.  			tmp = 10*rnd(150);
493.  			break;
494.  		case RING_SYM:
495.  			tmp = 10*rnd(100);
496.  			break;
497.  		case WAND_SYM:
498.  			tmp = 10*rnd(100);
499.  			break;
500.  		case SCROLL_SYM:
501.  			tmp = 10*rnd(50);
502.  			break;
503.  		case POTION_SYM:
504.  			tmp = 10*rnd(50);
505.  			break;
506.  		case FOOD_SYM:
507.  			tmp = 10*rnd(5 + (2000/realhunger()));
508.  			break;
509.  		case GEM_SYM:
510.  			tmp = 10*rnd(20);
511.  			break;
512.  		case ARMOR_SYM:
513.  			ac = 10 - obj->spe;
514.  			tmp = 100 + (10-ac)*(10-ac)*rnd(20-ac);
515.  			break;
516.  		case WEAPON_SYM:
517.  			if(obj->otyp < BOOMERANG)
518.  				tmp = 5*rnd(10);
519.  			else if(obj->otyp == LONG_SWORD ||
520.  				obj->otyp == TWO_HANDED_SWORD)
521.  				tmp = 10*rnd(150);
522.  			else	tmp = 10*rnd(75);
523.  			break;
524.  		case CHAIN_SYM:
525.  			pline("Strange ..., carrying a chain?");
526.  		case BALL_SYM:
527.  			tmp = 10;
528.  			break;
529.  		default:
530.  			tmp = 10000;
531.  	}
532.   return(tmp);
533.  }
534.  
535.  realhunger(){	/* not completely foolproof */
536.  register tmp = u.uhunger;
537.  register struct obj *otmp = invent;
538.  	while(otmp){
539.  		if(otmp->olet == FOOD_SYM && !otmp->unpaid)
540.  			tmp += objects[otmp->otyp].nutrition;
541.  		otmp = otmp->nobj;
542.  	}
543.   return((tmp <= 0) ? 1 : tmp);
544.  }
545.  
546.  shk_move(){
547.  register struct monst *mtmp;
548.  register struct permonst *mdat = shopkeeper->data;
549.  register xchar gx,gy,omx,omy,nx,ny,nix,niy;
550.  register schar appr,i;
551.  schar shkr,tmp,chi,chcnt,cnt;
552.  boolean uondoor, avoid;
553.  coord poss[9];
554.  int info[9];
555.  	omx = shopkeeper->mx;
556.  	omy = shopkeeper->my;
557.  	shkr = inroom(omx,omy);
558.  	if(ANGRY && dist(omx,omy) < 3){
559.  		(void) hitu(shopkeeper, d(mdat->damn, mdat->damd)+1);
560.  		return(0);
561.  	}
562.  	appr = 1;
563.  	gx = ESHK->shk.x;
564.  	gy = ESHK->shk.y;
565.  	if(ANGRY){
566.  		int saveBlind = Blind;
567.  		Blind = 0;
568.  		if(shopkeeper->mcansee && !Invis && cansee(omx,omy)) {
569.  			gx = u.ux;
570.  			gy = u.uy;
571.  		}
572.  		Blind = saveBlind;
573.  		avoid = FALSE;
574.  	} else {
575.  #define	GDIST(x,y)	((x-gx)*(x-gx)+(y-gy)*(y-gy))
576.  		if(Invis)
577.  		  avoid = FALSE;
578.  		else {
579.  		  uondoor = (u.ux == ESHK->shd.x && u.uy == ESHK->shd.y);
580.  		  avoid = ((u.uinshop && dist(gx,gy) > 8) || uondoor);
581.  		  if(((!ESHK->robbed && !ESHK->billct) || avoid)
582.  		  	&& GDIST(omx,omy) < 3){
583.  		  	if(!online(omx,omy)) return(0);
584.  		  	if(omx == gx && omy == gy)
585.  		  		appr = gx = gy = 0;
586.  		  }
587.  		}
588.  	}
589.  	if(omx == gx && omy == gy) return(0);
590.  	if(shopkeeper->mconf) appr = 0;
591.  	nix = omx;
592.  	niy = omy;
593.  	cnt = mfndpos(shopkeeper,poss,info,
594.  		(avoid ? NOTONL : 0) | ALLOW_SSM);
595.  	if(cnt == 0 && avoid && uondoor)
596.  		cnt = mfndpos(shopkeeper,poss,info,ALLOW_SSM);
597.  	chi = -1;
598.  	chcnt = 0;
599.  	for(i=0; i<cnt; i++){
600.  		nx = poss[i].x;
601.  		ny = poss[i].y;
602.  	   	if((tmp = levl[nx][ny].typ) == ROOM ||
603.  		(shkr != ESHK->shoproom && (tmp==CORR || tmp==DOOR)))
604.  #ifdef STUPID
605.  		/* cater for stupid compilers */
606.  		{ int zz;
607.  		if((!appr && !rn2(++chcnt)) ||
608.  		   (appr && (zz = GDIST(nix,niy)) && zz > GDIST(nx,ny))){
609.  #else
610.  		if((!appr && !rn2(++chcnt)) ||
611.  		   (appr && GDIST(nx,ny) < GDIST(nix,niy))){
612.  #endif STUPID
613.  			nix = nx;
614.  			niy = ny;
615.  			chi = i;
616.  #ifdef STUPID
617.  		   }
618.  #endif STUPID
619.  		}
620.  	}
621.  	if(nix != omx || niy != omy){
622.  		if(info[chi] & ALLOW_M){
623.  			mtmp = m_at(nix,niy);
624.  			if(hitmm(shopkeeper,mtmp) == 1 && rn2(3) &&
625.  			   hitmm(mtmp,shopkeeper) == 2) return(2);
626.  			return(0);
627.  		} else if(info[chi] & ALLOW_U){
628.  			(void) hitu(shopkeeper, d(mdat->damn, mdat->damd)+1);
629.  			return(0);
630.  		}
631.  		shopkeeper->mx = nix;
632.  		shopkeeper->my = niy;
633.  		pmon(shopkeeper);
634.  		return(1);
635.  	}
636.   return(0);
637.  }
638.  #endif QUEST
639.  
640.  char *
641.  plur(n) unsigned n; {
642.  	return((n==1) ? "" : "s");
643.  }
644.  
645.  online(x,y) {
646.  	return(x==u.ux || y==u.uy ||
647.  		(x-u.ux)*(x-u.ux) == (y-u.uy)*(y-u.uy));
648.  }