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Source:NetHack 3.3.0/engrave.c

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

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

The NetHack General Public License applies to screenshots, source code and other content from NetHack.
1.    /*	SCCS Id: @(#)engrave.c	3.3	1999/08/16	*/
2.    /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
3.    /* NetHack may be freely redistributed.  See license for details. */
4.    
5.    #include "hack.h"
6.    #include "lev.h"
7.    #include <ctype.h>
8.    
9.    STATIC_VAR NEARDATA struct engr *head_engr;
10.   
11.   #ifdef OVLB
12.   /* random engravings */
13.   static const char *random_mesg[] = {
14.   	"Elbereth",
15.   	/* trap engravings */
16.   	"Vlad was here", "ad aerarium",
17.   	/* take-offs and other famous engravings */
18.   	"Owlbreath", "Galadriel",
19.   	"Kilroy was here",
20.   	"A.S. ->", "<- A.S.", /* Journey to the Center of the Earth */
21.   	"You won't get it up the steps", /* Adventure */
22.   	"Lasciate ogni speranza o voi ch'entrate.", /* Inferno */
23.   	"Well Come", /* Prisoner */
24.   	"We apologize for the inconvenience.", /* So Long... */
25.   	"See you next Wednesday", /* Thriller */
26.   	"notary sojak", /* Smokey Stover */
27.   	"For a good time call 8?7-5309",
28.   	"Please don't feed the animals.", /* Various zoos around the world */
29.   	"Madam, in Eden, I'm Adam.", /* A palindrome */
30.   	"Two thumbs up!", /* Siskel & Ebert */
31.   	"Hello, World!", /* The First C Program */
32.   #ifdef MAIL
33.   	"You've got mail!", /* AOL */
34.   #endif
35.   	"As if!", /* Clueless */
36.   };
37.   
38.   char *
39.   random_engraving(outbuf)
40.   char *outbuf;
41.   {
42.   	const char *rumor;
43.   
44.   	/* a random engraving may come from the "rumors" file,
45.   	   or from the list above */
46.   	if (!rn2(4) || !(rumor = getrumor(0, outbuf)) || !*rumor)
47.   	    Strcpy(outbuf, random_mesg[rn2(SIZE(random_mesg))]);
48.   
49.   	wipeout_text(outbuf, (int)(strlen(outbuf) / 4), 0);
50.   	return outbuf;
51.   }
52.   
53.   /* Partial rubouts for engraving characters. -3. */
54.   static const struct {
55.   	char		wipefrom;
56.   	const char *	wipeto;
57.   } rubouts[] = {
58.   	{'A', "^"},     {'B', "Pb["},   {'C', "("},     {'D', "|)["},
59.   	{'E', "|FL[_"}, {'F', "|-"},    {'G', "C("},    {'H', "|-"},
60.   	{'I', "|"},     {'K', "|<"},    {'L', "|_"},    {'M', "|"},
61.   	{'N', "|\\"},   {'O', "C("},    {'P', "F"},     {'Q', "C("},
62.   	{'R', "PF"},    {'T', "|"},     {'U', "J"},     {'V', "/\\"},
63.   	{'W', "V/\\"},  {'Z', "/"},
64.   	{'b', "|"},     {'d', "c|"},    {'e', "c"},     {'g', "c"},
65.   	{'h', "n"},     {'j', "i"},     {'k', "|"},     {'l', "|"},
66.   	{'m', "nr"},    {'n', "r"},     {'o', "c"},     {'q', "c"},
67.   	{'w', "v"},     {'y', "v"},
68.   	{':', "."},     {';', ","},
69.   	{'0', "C("},    {'1', "|"},     {'6', "o"},     {'7', "/"},
70.   	{'8', "3o"}
71.   };
72.   
73.   void
74.   wipeout_text(engr, cnt, seed)
75.   char *engr;
76.   int cnt;
77.   unsigned seed;		/* for semi-controlled randomization */
78.   {
79.   	char *s;
80.   	int i, j, nxt, use_rubout, lth = (int)strlen(engr);
81.   
82.   	if (lth && cnt > 0) {
83.   	    while (cnt--) {
84.   		/* pick next character */
85.   		if (!seed) {
86.   		    /* random */
87.   		    nxt = rn2(lth);
88.   		    use_rubout = rn2(4);
89.   		} else {
90.   		    /* predictable; caller can reproduce the same sequence by
91.   		       supplying the same arguments later, or a pseudo-random
92.   		       sequence by varying any of them */
93.   		    nxt = seed % lth;
94.   		    seed *= 31,  seed %= (BUFSZ-1);
95.   		    use_rubout = seed & 3;
96.   		}
97.   		s = &engr[nxt];
98.   		if (*s == ' ') continue;
99.   
100.  		/* rub out unreadable & small punctuation marks */
101.  		if (index("?.,'`-|_", *s)) {
102.  		    *s = ' ';
103.  		    continue;
104.  		}
105.  
106.  		if (!use_rubout)
107.  		    i = SIZE(rubouts);
108.  		else
109.  		    for (i = 0; i < SIZE(rubouts); i++)
110.  			if (*s == rubouts[i].wipefrom) {
111.  			    /*
112.  			     * Pick one of the substitutes at random.
113.  			     */
114.  			    if (!seed)
115.  				j = rn2(strlen(rubouts[i].wipeto));
116.  			    else {
117.  				seed *= 31,  seed %= (BUFSZ-1);
118.  				j = seed % (strlen(rubouts[i].wipeto));
119.  			    }
120.  			    *s = rubouts[i].wipeto[j];
121.  			    break;
122.  			}
123.  
124.  		/* didn't pick rubout; use '?' for unreadable character */
125.  		if (i == SIZE(rubouts)) *s = '?';
126.  	    }
127.  	}
128.  
129.  	/* trim trailing spaces */
130.  	while (lth && engr[lth-1] == ' ') engr[--lth] = 0;
131.  }
132.  
133.  boolean
134.  can_reach_floor()
135.  {
136.  	return (boolean)(!u.uswallow &&
137.  #ifdef STEED
138.  			/* Restricted/unskilled riders can't reach the floor */
139.  			!(u.usteed && P_SKILL(P_RIDING) < P_BASIC) &&
140.  #endif
141.  			 (!Levitation ||
142.  			  Is_airlevel(&u.uz) || Is_waterlevel(&u.uz)));
143.  }
144.  #endif /* OVLB */
145.  #ifdef OVL0
146.  
147.  const char *
148.  surface(x, y)
149.  register int x, y;
150.  {
151.  	register struct rm *lev = &levl[x][y];
152.  
153.  	if ((x == u.ux) && (y == u.uy) && u.uswallow &&
154.  		is_animal(u.ustuck->data))
155.  	    return "maw";
156.  	else if (IS_AIR(lev->typ))
157.  	    return "air";
158.  	else if (is_pool(x,y))
159.  	    return "water";
160.  	else if (is_ice(x,y))
161.  	    return "ice";
162.  	else if (is_lava(x,y))
163.  	    return "lava";
164.  	else if (lev->typ == DRAWBRIDGE_DOWN)
165.  	    return "bridge";
166.  	else if(IS_ALTAR(levl[x][y].typ))
167.  	    return "altar";
168.  	else if ((IS_ROOM(lev->typ) && !Is_earthlevel(&u.uz)) ||
169.  		 IS_WALL(lev->typ) || IS_DOOR(lev->typ) || lev->typ == SDOOR)
170.  	    return "floor";
171.  	else
172.  	    return "ground";
173.  }
174.  
175.  const char *
176.  ceiling(x, y)
177.  register int x, y;
178.  {
179.  	register struct rm *lev = &levl[x][y];
180.  	const char *what;
181.  
182.  	/* other room types will no longer exist when we're interested --
183.  	 * see check_special_room()
184.  	 */
185.  	if (*in_rooms(x,y,VAULT))
186.  	    what = "vault's ceiling";
187.  	else if (*in_rooms(x,y,TEMPLE))
188.  	    what = "temple's ceiling";
189.  	else if (*in_rooms(x,y,SHOPBASE))
190.  	    what = "shop's ceiling";
191.  	else if (IS_AIR(lev->typ))
192.  	    what = "sky";
193.  	else if (Underwater)
194.  	    what = "water's surface";
195.  	else if ((IS_ROOM(lev->typ) && !Is_earthlevel(&u.uz)) ||
196.  		 IS_WALL(lev->typ) || IS_DOOR(lev->typ) || lev->typ == SDOOR)
197.  	    what = "ceiling";
198.  	else
199.  	    what = "rock above";
200.  
201.  	return what;
202.  }
203.  
204.  struct engr *
205.  engr_at(x, y)
206.  xchar x, y;
207.  {
208.  	register struct engr *ep = head_engr;
209.  
210.  	while(ep) {
211.  		if(x == ep->engr_x && y == ep->engr_y)
212.  			return(ep);
213.  		ep = ep->nxt_engr;
214.  	}
215.  	return((struct engr *) 0);
216.  }
217.  
218.  #ifdef ELBERETH
219.  /* decide whether a particular string is engraved at a specified location;
220.     a case-insensitive substring match used */
221.  int
222.  sengr_at(s, x, y)
223.  	const char *s;
224.  	xchar x, y;
225.  {
226.  	register struct engr *ep = engr_at(x,y);
227.  
228.  	return (ep && ep->engr_time <= moves && strstri(ep->engr_txt, s) != 0);
229.  }
230.  #endif /* ELBERETH */
231.  
232.  #endif /* OVL0 */
233.  #ifdef OVL2
234.  
235.  void
236.  u_wipe_engr(cnt)
237.  register int cnt;
238.  {
239.  	if (can_reach_floor())
240.  		wipe_engr_at(u.ux, u.uy, cnt);
241.  }
242.  
243.  #endif /* OVL2 */
244.  #ifdef OVL1
245.  
246.  void
247.  wipe_engr_at(x,y,cnt)
248.  register xchar x,y,cnt;
249.  {
250.  	register struct engr *ep = engr_at(x,y);
251.  
252.  	if(ep){
253.  	    if(ep->engr_type != BURN || is_ice(x,y)) {
254.  		if(ep->engr_type != DUST && ep->engr_type != BLOOD) {
255.  			cnt = rn2(1 + 50/(cnt+1)) ? 0 : 1;
256.  		}
257.  		wipeout_text(ep->engr_txt, (int)cnt, 0);
258.  		while(ep->engr_txt[0] == ' ')
259.  			ep->engr_txt++;
260.  		if(!ep->engr_txt[0]) del_engr(ep);
261.  	    }
262.  	}
263.  }
264.  
265.  #endif /* OVL1 */
266.  #ifdef OVL2
267.  
268.  void
269.  read_engr_at(x,y)
270.  register int x,y;
271.  {
272.  	register struct engr *ep = engr_at(x,y);
273.  	register int	sensed = 0;
274.  
275.  	if(ep && ep->engr_txt[0]) {
276.  	    switch(ep->engr_type) {
277.  	    case DUST:
278.  		if(!Blind) {
279.  			sensed = 1;
280.  			pline("%s is written here in the %s.", Something,
281.  				is_ice(x,y) ? "frost" : "dust");
282.  		}
283.  		break;
284.  	    case ENGRAVE:
285.  		if (!Blind || can_reach_floor()) {
286.  			sensed = 1;
287.  			pline("%s is engraved here on the %s.",
288.  				Something,
289.  				surface(x,y));
290.  		}
291.  		break;
292.  	    case BURN:
293.  		if (!Blind || can_reach_floor()) {
294.  			sensed = 1;
295.  			pline("Some text has been %s into the %s here.",
296.  				is_ice(x,y) ? "melted" : "burned",
297.  				surface(x,y));
298.  		}
299.  		break;
300.  	    case MARK:
301.  		if(!Blind) {
302.  			sensed = 1;
303.  			pline("There's some graffiti on the %s here.",
304.  				surface(x,y));
305.  		}
306.  		break;
307.  	    case BLOOD:
308.  		/* "It's a message!  Scrawled in blood!"
309.  		 * "What's it say?"
310.  		 * "It says... `See you next Wednesday.'" -- Thriller
311.  		 */
312.  		if(!Blind) {
313.  			sensed = 1;
314.  			You("see a message scrawled in blood here.");
315.  		}
316.  		break;
317.  	    default:
318.  		impossible("%s is written in a very strange way.",
319.  				Something);
320.  		sensed = 1;
321.  	    }
322.  	    if (sensed) {
323.  		You("%s: \"%s\".",
324.  		      (Blind) ? "feel the words" : "read",  ep->engr_txt);
325.  		if(flags.run > 1) nomul(0);
326.  	    }
327.  	}
328.  }
329.  
330.  #endif /* OVL2 */
331.  #ifdef OVLB
332.  
333.  void
334.  make_engr_at(x,y,s,e_time,e_type)
335.  register int x,y;
336.  register const char *s;
337.  register long e_time;
338.  register xchar e_type;
339.  {
340.  	register struct engr *ep;
341.  
342.  	if ((ep = engr_at(x,y)) != 0)
343.  	    del_engr(ep);
344.  	ep = newengr(strlen(s) + 1);
345.  	ep->nxt_engr = head_engr;
346.  	head_engr = ep;
347.  	ep->engr_x = x;
348.  	ep->engr_y = y;
349.  	ep->engr_txt = (char *)(ep + 1);
350.  	Strcpy(ep->engr_txt, s);
351.  	if(strcmp(s, "Elbereth")) exercise(A_WIS, TRUE);
352.  	ep->engr_time = e_time;
353.  	ep->engr_type = e_type > 0 ? e_type : rnd(N_ENGRAVE);
354.  	ep->engr_lth = strlen(s) + 1;
355.  }
356.  
357.  /* delete any engraving at location <x,y> */
358.  void
359.  del_engr_at(x, y)
360.  int x, y;
361.  {
362.  	register struct engr *ep = engr_at(x, y);
363.  
364.  	if (ep) del_engr(ep);
365.  }
366.  
367.  /*
368.   *	freehand - returns true if player has a free hand
369.   */
370.  int
371.  freehand()
372.  {
373.  	return(!uwep || !welded(uwep) ||
374.  	   (!bimanual(uwep) && (!uarms || !uarms->cursed)));
375.  /*	if ((uwep && bimanual(uwep)) ||
376.  	    (uwep && uarms))
377.  		return(0);
378.  	else
379.  		return(1);*/
380.  }
381.  
382.  static NEARDATA const char styluses[] =
383.  	{ ALL_CLASSES, ALLOW_NONE, TOOL_CLASS, WEAPON_CLASS, WAND_CLASS,
384.  	  GEM_CLASS, RING_CLASS, 0 };
385.  
386.  /* Mohs' Hardness Scale:
387.   *  1 - Talc		 6 - Orthoclase
388.   *  2 - Gypsum		 7 - Quartz
389.   *  3 - Calcite		 8 - Topaz
390.   *  4 - Fluorite	 9 - Corundum
391.   *  5 - Apatite		10 - Diamond
392.   *
393.   * Since granite is a igneous rock hardness ~ 7, anything >= 8 should
394.   * probably be able to scratch the rock.
395.   * Devaluation of less hard gems is not easily possible because obj struct
396.   * does not contain individual oc_cost currently. 7/91
397.   *
398.   * steel     -	5-8.5	(usu. weapon)
399.   * diamond    - 10			* jade	     -	5-6	 (nephrite)
400.   * ruby       -  9	(corundum)	* turquoise  -	5-6
401.   * sapphire   -  9	(corundum)	* opal	     -	5-6
402.   * topaz      -  8			* glass      - ~5.5
403.   * emerald    -  7.5-8	(beryl)		* dilithium  -	4-5??
404.   * aquamarine -  7.5-8	(beryl)		* iron	     -	4-5
405.   * garnet     -  7.25	(var. 6.5-8)	* fluorite   -	4
406.   * agate      -  7	(quartz)	* brass      -	3-4
407.   * amethyst   -  7	(quartz)	* gold	     -	2.5-3
408.   * jasper     -  7	(quartz)	* silver     -	2.5-3
409.   * onyx       -  7	(quartz)	* copper     -	2.5-3
410.   * moonstone  -  6	(orthoclase)	* amber      -	2-2.5
411.   */
412.  
413.  /* return 1 if action took 1 (or more) moves, 0 if error or aborted */
414.  int
415.  doengrave()
416.  {
417.  	boolean dengr = FALSE;	/* TRUE if we wipe out the current engraving */
418.  	boolean doblind = FALSE;/* TRUE if engraving blinds the player */
419.  	boolean doknown = FALSE;/* TRUE if we identify the stylus */
420.  	boolean eow = FALSE;	/* TRUE if we are overwriting oep */
421.  	boolean jello = FALSE;	/* TRUE if we are engraving in slime */
422.  	boolean ptext = TRUE;	/* TRUE if we must prompt for engrave text */
423.  	boolean teleengr =FALSE;/* TRUE if we move the old engraving */
424.  	boolean zapwand = FALSE;/* TRUE if we remove a wand charge */
425.  	xchar type = DUST;	/* Type of engraving made */
426.  	char buf[BUFSZ];	/* Buffer for final/poly engraving text */
427.  	char ebuf[BUFSZ];	/* Buffer for initial engraving text */
428.  	char qbuf[QBUFSZ];	/* Buffer for query text */
429.  	char post_engr_text[BUFSZ]; /* Text displayed after engraving prompt */
430.  	const char *everb;	/* Present tense of engraving type */
431.  	const char *eloc;	/* Where the engraving is (ie dust/floor/...) */
432.  	register char *sp;	/* Place holder for space count of engr text */
433.  	register int len;	/* # of nonspace chars of new engraving text */
434.  	register int maxelen;	/* Max allowable length of new engraving text */
435.  	register int spct;	/* # of spaces in new engraving text */
436.  	register struct engr *oep = engr_at(u.ux,u.uy);
437.  				/* The current engraving */
438.  	register struct obj *otmp; /* Object selected with which to engrave */
439.  	char *writer;
440.  
441.  
442.  	multi = 0;		/* moves consumed */
443.  	nomovemsg = (char *)0;	/* occupation end message */
444.  
445.  	buf[0] = (char)0;
446.  	ebuf[0] = (char)0;
447.  	post_engr_text[0] = (char)0;
448.  	maxelen = BUFSZ - 1;
449.  
450.  	/* Can the adventurer engrave at all? */
451.  
452.  	if(u.uswallow) {
453.  		if (is_animal(u.ustuck->data)) {
454.  			pline("What would you write?  \"Jonah was here\"?");
455.  			return(0);
456.  		} else if (is_whirly(u.ustuck->data)) {
457.  			You_cant("reach the %s.", surface(u.ux,u.uy));
458.  			return(0);
459.  		} else
460.  			jello = TRUE;
461.  	} else if (is_lava(u.ux, u.uy)) {
462.  		You_cant("write on the lava!");
463.  		return(0);
464.  	} else if (is_pool(u.ux,u.uy) || IS_FOUNTAIN(levl[u.ux][u.uy].typ)) {
465.  		You_cant("write on the water!");
466.  		return(0);
467.  	}
468.  	if(Is_airlevel(&u.uz) || Is_waterlevel(&u.uz)/* in bubble */) {
469.  		You_cant("write in thin air!");
470.  		return(0);
471.  	}
472.  	if (cantwield(youmonst.data)) {
473.  		You_cant("even hold anything!");
474.  		return(0);
475.  	}
476.  	if (check_capacity((char *)0)) return (0);
477.  
478.  	/* One may write with finger, or weapon, or wand, or..., or...
479.  	 * Edited by GAN 10/20/86 so as not to change weapon wielded.
480.  	 */
481.  
482.  	otmp = getobj(styluses, "write with");
483.  	if(!otmp) return(0);		/* otmp == zeroobj if fingers */
484.  
485.  	if (otmp == &zeroobj) writer = makeplural(body_part(FINGER));
486.  	else writer = xname(otmp);
487.  
488.  	/* There's no reason you should be able to write with a wand
489.  	 * while both your hands are tied up.
490.  	 */
491.  	if (!freehand() && otmp != uwep && !otmp->owornmask) {
492.  		You("have no free %s to write with!", body_part(HAND));
493.  		return(0);
494.  	}
495.  
496.  	if (jello) {
497.  		You("tickle %s with your %s.", mon_nam(u.ustuck), writer);
498.  		Your("message dissolves...");
499.  		return(0);
500.  	}
501.  	if (otmp->oclass != WAND_CLASS && !can_reach_floor()) {
502.  		You_cant("reach the %s!", surface(u.ux,u.uy));
503.  		return(0);
504.  	}
505.  	if (IS_ALTAR(levl[u.ux][u.uy].typ)) {
506.  		You("make a motion towards the altar with your %s.", writer);
507.  		altar_wrath(u.ux, u.uy);
508.  		return(0);
509.  	}
510.  
511.  	/* SPFX for items */
512.  
513.  	switch (otmp->oclass) {
514.  	    default:
515.  	    case AMULET_CLASS:
516.  	    case CHAIN_CLASS:
517.  	    case POTION_CLASS:
518.  	    case GOLD_CLASS:
519.  		break;
520.  
521.  	    case RING_CLASS:
522.  		/* "diamond" rings and others should work */
523.  	    case GEM_CLASS:
524.  		/* diamonds & other hard gems should work */
525.  		if (objects[otmp->otyp].oc_tough) {
526.  			type = ENGRAVE;
527.  			break;
528.  		}
529.  		break;
530.  
531.  	    case ARMOR_CLASS:
532.  		if (is_boots(otmp)) {
533.  			type = DUST;
534.  			break;
535.  		}
536.  		/* fall through */
537.  	    /* Objects too large to engrave with */
538.  	    case BALL_CLASS:
539.  	    case ROCK_CLASS:
540.  		You_cant("engrave with such a large object!");
541.  		ptext = FALSE;
542.  		break;
543.  
544.  	    /* Objects too silly to engrave with */
545.  	    case FOOD_CLASS:
546.  	    case SCROLL_CLASS:
547.  	    case SPBOOK_CLASS:
548.  		Your("%s would get %s.", xname(otmp),
549.  			is_ice(u.ux,u.uy) ? "all frosty" : "too dirty");
550.  		ptext = FALSE;
551.  		break;
552.  
553.  	    case RANDOM_CLASS:	/* This should mean fingers */
554.  		break;
555.  
556.  	    /* The charge is removed from the wand before prompting for
557.  	     * the engraving text, because all kinds of setup decisions
558.  	     * and pre-engraving messages are based upon knowing what type
559.  	     * of engraving the wand is going to do.  Also, the player
560.  	     * will have potentially seen "You wrest .." message, and
561.  	     * therefore will know they are using a charge.
562.  	     */
563.  	    case WAND_CLASS:
564.  		if (zappable(otmp)) {
565.  		    check_unpaid(otmp);
566.  		    zapwand = TRUE;
567.  		    if (Levitation) ptext = FALSE;
568.  
569.  		    switch (otmp->otyp) {
570.  		    /* DUST wands */
571.  		    default:
572.  			break;
573.  
574.  			/* NODIR wands */
575.  		    case WAN_LIGHT:
576.  		    case WAN_SECRET_DOOR_DETECTION:
577.  		    case WAN_CREATE_MONSTER:
578.  		    case WAN_WISHING:
579.  		    case WAN_ENLIGHTENMENT:
580.  			zapnodir(otmp);
581.  			break;
582.  
583.  			/* IMMEDIATE wands */
584.  			/* If wand is "IMMEDIATE", remember to affect the
585.  			 * previous engraving even if turning to dust.
586.  			 */
587.  		    case WAN_STRIKING:
588.  			Strcpy(post_engr_text,
589.  			"The wand unsuccessfully fights your attempt to write!"
590.  			);
591.  			break;
592.  		    case WAN_SLOW_MONSTER:
593.  			if (!Blind) {
594.  			   Sprintf(post_engr_text,
595.  				   "The bugs on the %s slow down!",
596.  				   surface(u.ux, u.uy));
597.  			}
598.  			break;
599.  		    case WAN_SPEED_MONSTER:
600.  			if (!Blind) {
601.  			   Sprintf(post_engr_text,
602.  				   "The bugs on the %s speed up!",
603.  				   surface(u.ux, u.uy));
604.  			}
605.  			break;
606.  		    case WAN_POLYMORPH:
607.  			if(oep)  {
608.  			    if (!Blind) {
609.  				type = (xchar)0;	/* random */
610.  				(void) random_engraving(buf);
611.  			    }
612.  			    dengr = TRUE;
613.  			}
614.  			break;
615.  		    case WAN_NOTHING:
616.  		    case WAN_UNDEAD_TURNING:
617.  		    case WAN_OPENING:
618.  		    case WAN_LOCKING:
619.  		    case WAN_PROBING:
620.  			break;
621.  
622.  			/* RAY wands */
623.  		    case WAN_MAGIC_MISSILE:
624.  			ptext = TRUE;
625.  			if (!Blind) {
626.  			   Sprintf(post_engr_text,
627.  				   "The %s is riddled by bullet holes!",
628.  				   surface(u.ux, u.uy));
629.  			}
630.  			break;
631.  
632.  		    /* can't tell sleep from death - Eric Backus */
633.  		    case WAN_SLEEP:
634.  		    case WAN_DEATH:
635.  			if (!Blind) {
636.  			   Sprintf(post_engr_text,
637.  				   "The bugs on the %s stop moving!",
638.  				   surface(u.ux, u.uy));
639.  			}
640.  			break;
641.  
642.  		    case WAN_COLD:
643.  			if (!Blind)
644.  			    Strcpy(post_engr_text,
645.  				"A few ice cubes drop from the wand.");
646.  			if(!oep || (oep->engr_type != BURN))
647.  			    break;
648.  		    case WAN_CANCELLATION:
649.  		    case WAN_MAKE_INVISIBLE:
650.  			if(oep) {
651.  			    if (!Blind)
652.  				pline_The("engraving on the %s vanishes!",
653.  					surface(u.ux,u.uy));
654.  			    dengr = TRUE;
655.  			}
656.  			break;
657.  		    case WAN_TELEPORTATION:
658.  			if (oep) {
659.  			    if (!Blind)
660.  				pline_The("engraving on the %s vanishes!",
661.  					surface(u.ux,u.uy));
662.  			    teleengr = TRUE;
663.  			}
664.  			break;
665.  
666.  		    /* type = ENGRAVE wands */
667.  		    case WAN_DIGGING:
668.  			ptext = TRUE;
669.  			type  = ENGRAVE;
670.  			if(!objects[otmp->otyp].oc_name_known) {
671.  			    if (flags.verbose)
672.  				pline("This %s is a wand of digging!",
673.  				xname(otmp));
674.  			    doknown = TRUE;
675.  			}
676.  			if (!Blind)
677.  			    Strcpy(post_engr_text,
678.  				is_ice(u.ux,u.uy) ?
679.  				"Ice chips fly up from the ice surface!" :
680.  				"Gravel flies up from the floor.");
681.  			else
682.  			    Strcpy(post_engr_text, "You hear drilling!");
683.  			break;
684.  
685.  		    /* type = BURN wands */
686.  		    case WAN_FIRE:
687.  			ptext = TRUE;
688.  			type  = BURN;
689.  			if(!objects[otmp->otyp].oc_name_known) {
690.  			if (flags.verbose)
691.  			    pline("This %s is a wand of fire!", xname(otmp));
692.  			    doknown = TRUE;
693.  			}
694.  			Strcpy(post_engr_text,
695.  				Blind ? "You feel the wand heat up." :
696.  					"Flames fly from the wand.");
697.  			break;
698.  		    case WAN_LIGHTNING:
699.  			ptext = TRUE;
700.  			type  = BURN;
701.  			if(!objects[otmp->otyp].oc_name_known) {
702.  			    if (flags.verbose)
703.  				pline("This %s is a wand of lightning!",
704.  					xname(otmp));
705.  			    doknown = TRUE;
706.  			}
707.  			if (!Blind) {
708.  			    Strcpy(post_engr_text,
709.  				    "Lightning arcs from the wand.");
710.  			    doblind = TRUE;
711.  			} else
712.  			    Strcpy(post_engr_text, "You hear crackling!");
713.  			break;
714.  
715.  		    /* type = MARK wands */
716.  		    /* type = BLOOD wands */
717.  		    }
718.  		} else /* end if zappable */
719.  		    if (!can_reach_floor()) {
720.  			You_cant("reach the %s!", surface(u.ux,u.uy));
721.  			return(0);
722.  		    }
723.  		break;
724.  
725.  	    case WEAPON_CLASS:
726.  		if(is_blade(otmp))
727.  		    if ((int)otmp->spe > -3)
728.  			type = ENGRAVE;
729.  		    else
730.  			Your("%s too dull for engraving.", aobjnam(otmp,"are"));
731.  		break;
732.  
733.  	    case TOOL_CLASS:
734.  		if(otmp == ublindf) {
735.  		    pline(
736.  		"That is a bit difficult to engrave with, don't you think?");
737.  		    return(0);
738.  		}
739.  		switch (otmp->otyp)  {
740.  		    case MAGIC_MARKER:
741.  			if (otmp->spe <= 0)
742.  			    Your("marker has dried out.");
743.  			else
744.  			    type = MARK;
745.  			break;
746.  		    case TOWEL:
747.  			/* Can't really engrave with a towel */
748.  			ptext = FALSE;
749.  			if (oep)
750.  			    if ((oep->engr_type == DUST ) ||
751.  				(oep->engr_type == BLOOD) ||
752.  				(oep->engr_type == MARK )) {
753.  				if (!Blind)
754.  				    You("wipe out the message here.");
755.  				else
756.  				    Your("%s gets %s.", xname(otmp),
757.  					  is_ice(u.ux,u.uy) ?
758.  					  "frosty" : "dusty");
759.  				dengr = TRUE;
760.  			    } else
761.  				Your("%s can't wipe out this engraving.",
762.  				     xname(otmp));
763.  			else
764.  			    Your("%s gets %s.", xname(otmp),
765.  				  is_ice(u.ux,u.uy) ? "frosty" : "dusty");
766.  			break;
767.  		    default:
768.  			break;
769.  		}
770.  		break;
771.  
772.  	    case VENOM_CLASS:
773.  #ifdef WIZARD
774.  		if (wizard) {
775.  		    pline("Writing a poison pen letter??");
776.  		    break;
777.  		}
778.  #endif
779.  	    case ILLOBJ_CLASS:
780.  		impossible("You're engraving with an illegal object!");
781.  		break;
782.  	}
783.  
784.  	/* End of implement setup */
785.  
786.  	/* Identify stylus */
787.  	if (doknown) {
788.  	    makeknown(otmp->otyp);
789.  	    more_experienced(0,10);
790.  	}
791.  
792.  	if (teleengr) {
793.  	    rloc_engr(oep);
794.  	    oep = (struct engr *)0;
795.  	}
796.  
797.  	if (dengr) {
798.  	    del_engr(oep);
799.  	    oep = (struct engr *)0;
800.  	}
801.  
802.  	/* Something has changed the engraving here */
803.  	if (*buf) {
804.  	    make_engr_at(u.ux, u.uy, buf, moves, type);
805.  	    pline_The("engraving now reads: \"%s\".", buf);
806.  	    ptext = FALSE;
807.  	}
808.  
809.  	if (zapwand && (otmp->spe < 0)) {
810.  	    pline("%s %sturns to dust.",
811.  		  The(xname(otmp)), Blind ? "" : "glows violently, then ");
812.   You("are not going to get anywhere trying to write in the %s with your dust.",
813.  		is_ice(u.ux,u.uy) ? "frost" : "dust");
814.  	    useup(otmp);
815.  	    ptext = FALSE;
816.  	}
817.  
818.  	if (!ptext) {		/* Early exit for some implements. */
819.  	    if (otmp->oclass == WAND_CLASS && !can_reach_floor())
820.  		You_cant("reach the %s!", surface(u.ux,u.uy));
821.  	    return(1);
822.  	}
823.  
824.  	/* Special effects should have deleted the current engraving (if
825.  	 * possible) by now.
826.  	 */
827.  
828.  	if (oep) {
829.  	    register char c = 'n';
830.  
831.  	    /* Give player the choice to add to engraving. */
832.  
833.  	    if ( (type == oep->engr_type) && (!Blind ||
834.  		 (oep->engr_type == BURN) || (oep->engr_type == ENGRAVE)) ) {
835.  		c = yn_function("Do you want to add to the current engraving?",
836.  				ynqchars, 'y');
837.  		if (c == 'q') {
838.  		    pline("Never mind.");
839.  		    return(0);
840.  		}
841.  	    }
842.  
843.  	    if (c == 'n' || Blind) {
844.  
845.  		if( (oep->engr_type == DUST) || (oep->engr_type == BLOOD) ||
846.  		    (oep->engr_type == MARK) ) {
847.  		    if (!Blind) {
848.  			You("wipe out the message that was %s here.",
849.  			    ((oep->engr_type == DUST)  ? "written in the dust" :
850.  			    ((oep->engr_type == BLOOD) ? "scrawled in blood"   :
851.  							 "written")));
852.  			del_engr(oep);
853.  			oep = (struct engr *)0;
854.  		    } else
855.  		   /* Don't delete engr until after we *know* we're engraving */
856.  			eow = TRUE;
857.  		} else
858.  		    if ( (type == DUST) || (type == MARK) || (type == BLOOD) ) {
859.  			You(
860.  			 "cannot wipe out the message that is %s the %s here.",
861.  			 oep->engr_type == BURN ?
862.  			   (is_ice(u.ux,u.uy) ? "melted into" : "burned into") :
863.  			   "engraved in", surface(u.ux,u.uy));
864.  			return(1);
865.  		    } else
866.  			if ( (type != oep->engr_type) || (c == 'n') ) {
867.  			    if (!Blind || can_reach_floor())
868.  				You("will overwrite the current message.");
869.  			    eow = TRUE;
870.  			}
871.  	}
872.  	}
873.  
874.  	eloc = surface(u.ux,u.uy);
875.  	switch(type){
876.  	    default:
877.  		everb = (oep && !eow ? "add to the weird writing on" :
878.  				       "write strangely on");
879.  		break;
880.  	    case DUST:
881.  		everb = (oep && !eow ? "add to the writing in" :
882.  				       "write in");
883.  		eloc = is_ice(u.ux,u.uy) ? "frost" : "dust";
884.  		break;
885.  	    case ENGRAVE:
886.  		everb = (oep && !eow ? "add to the engraving in" :
887.  				       "engrave in");
888.  		break;
889.  	    case BURN:
890.  		everb = (oep && !eow ?
891.  			( is_ice(u.ux,u.uy) ? "add to the text melted into" :
892.  					      "add to the text burned into") :
893.  			( is_ice(u.ux,u.uy) ? "melt into" : "burn into"));
894.  		break;
895.  	    case MARK:
896.  		everb = (oep && !eow ? "add to the graffiti on" :
897.  				       "scribble on");
898.  		break;
899.  	    case BLOOD:
900.  		everb = (oep && !eow ? "add to the scrawl on" :
901.  				       "scrawl on");
902.  		break;
903.  	}
904.  
905.  	/* Tell adventurer what is going on */
906.  	if (otmp != &zeroobj)
907.  	    You("%s the %s with %s.", everb, eloc, doname(otmp));
908.  	else
909.  	    You("%s the %s with your %s.", everb, eloc,
910.  		makeplural(body_part(FINGER)));
911.  
912.  	/* Prompt for engraving! */
913.  	Sprintf(qbuf,"What do you want to %s the %s here?", everb, eloc);
914.  	getlin(qbuf, ebuf);
915.  
916.  	/* Mix up engraving if surface or state of mind is unsound.  */
917.  	/* Original kludge by stewr 870708.  modified by njm 910722. */
918.  	for (sp = ebuf; *sp; sp++)
919.  	    if ( ((type == DUST || type == BLOOD) && !rn2(25)) ||
920.  		 (Blind   && !rn2(9)) || (Confusion     && !rn2(12)) ||
921.  		 (Stunned && !rn2(4)) || (Hallucination && !rn2(1)) )
922.  		 *sp = '!' + rn2(93); /* ASCII-code only */
923.  
924.  	/* Count the actual # of chars engraved not including spaces */
925.  	len = strlen(ebuf);
926.  
927.  	for (sp = ebuf, spct = 0; *sp; sp++) if (isspace(*sp)) spct++;
928.  
929.  	if ( (len == spct) || index(ebuf, '\033') ) {
930.  	    if (zapwand) {
931.  		if (!Blind)
932.  		    pline("%s glows, then fades.", The(xname(otmp)));
933.  		return(1);
934.  	    } else {
935.  		pline("Never mind.");
936.  		return(0);
937.  	    }
938.  	}
939.  
940.  	len -= spct;
941.  
942.  	/* Previous engraving is overwritten */
943.  	if (eow) {
944.  	    del_engr(oep);
945.  	    oep = (struct engr *)0;
946.  	}
947.  
948.  	/* Figure out how long it took to engrave, and if player has
949.  	 * engraved too much.
950.  	 */
951.  	switch(type){
952.  	    default:
953.  		multi = -(len/10);
954.  		if (multi) nomovemsg = "You finish your weird engraving.";
955.  		break;
956.  	    case DUST:
957.  		multi = -(len/10);
958.  		if (multi) nomovemsg = "You finish writing in the dust.";
959.  		break;
960.  	    case ENGRAVE:
961.  		multi = -(len/10);
962.  		if ((otmp->oclass == WEAPON_CLASS) &&
963.  		    ((otmp->otyp != ATHAME) || otmp->cursed)) {
964.  		    multi = -len;
965.  		    maxelen = ((otmp->spe + 3) * 2) + 1;
966.  			/* -2 = 3, -1 = 5, 0 = 7, +1 = 9, +2 = 11
967.  			 * Note: this does not allow a +0 anything (except
968.  			 *	 an athame) to engrave "Elbereth" all at once.
969.  			 *	 However, you could now engrave "Elb", then
970.  			 *	 "ere", then "th".
971.  			 */
972.  		    Your("%s dull.", aobjnam(otmp, "get"));
973.  		    if (len > maxelen) {
974.  			multi = -maxelen;
975.  			otmp->spe = -3;
976.  		    } else
977.  			if (len > 1) otmp->spe -= len >> 1;
978.  			else otmp->spe -= 1; /* Prevent infinite engraving */
979.  		} else
980.  		    if ( (otmp->oclass == RING_CLASS) ||
981.  			 (otmp->oclass == GEM_CLASS) )
982.  			multi = -len;
983.  		if (multi) nomovemsg = "You finish engraving.";
984.  		break;
985.  	    case BURN:
986.  		multi = -(len/10);
987.  		if (multi)
988.  		    nomovemsg = is_ice(u.ux,u.uy) ?
989.  			"You finish melting your message into the ice.":
990.  			"You finish burning your message into the floor.";
991.  		break;
992.  	    case MARK:
993.  		multi = -(len/10);
994.  		if ((otmp->oclass == TOOL_CLASS) &&
995.  		    (otmp->otyp == MAGIC_MARKER)) {
996.  		    maxelen = (otmp->spe) * 2; /* one charge / 2 letters */
997.  		    if (len > maxelen) {
998.  			Your("marker dries out.");
999.  			otmp->spe = 0;
1000. 			multi = -(maxelen/10);
1001. 		    } else
1002. 			if (len > 1) otmp->spe -= len >> 1;
1003. 			else otmp->spe -= 1; /* Prevent infinite grafitti */
1004. 		}
1005. 		if (multi) nomovemsg = "You finish defacing the dungeon.";
1006. 		break;
1007. 	    case BLOOD:
1008. 		multi = -(len/10);
1009. 		if (multi) nomovemsg = "You finish scrawling.";
1010. 		break;
1011. 	}
1012. 
1013. 	/* Chop engraving down to size if necessary */
1014. 	if (len > maxelen) {
1015. 	    for (sp = ebuf; (maxelen && *sp); sp++)
1016. 		if (!isspace(*sp)) maxelen--;
1017. 	    if (!maxelen && *sp) {
1018. 		*sp = (char)0;
1019. 		if (multi) nomovemsg = "You cannot write any more.";
1020. 		You("only are able to write \"%s\"", ebuf);
1021. 	    }
1022. 	}
1023. 
1024. 	/* Add to existing engraving */
1025. 	if (oep) Strcpy(buf, oep->engr_txt);
1026. 
1027. 	(void) strncat(buf, ebuf, (BUFSZ - (int)strlen(buf) - 1));
1028. 
1029. 	make_engr_at(u.ux, u.uy, buf, (moves - multi), type);
1030. 
1031. 	if (post_engr_text[0]) pline(post_engr_text);
1032. 
1033. 	if (doblind && !resists_blnd(&youmonst)) {
1034. 	    You("are blinded by the flash!");
1035. 	    make_blinded((long)rnd(50),FALSE);
1036. 	}
1037. 
1038. 	u.uconduct.literate++;
1039. 
1040. 	return(1);
1041. }
1042. 
1043. void
1044. save_engravings(fd, mode)
1045. int fd, mode;
1046. {
1047. 	register struct engr *ep = head_engr;
1048. 	register struct engr *ep2;
1049. 	unsigned no_more_engr = 0;
1050. 
1051. 	while (ep) {
1052. 	    ep2 = ep->nxt_engr;
1053. 	    if (ep->engr_lth && ep->engr_txt[0] && perform_bwrite(mode)) {
1054. 		bwrite(fd, (genericptr_t)&(ep->engr_lth), sizeof(ep->engr_lth));
1055. 		bwrite(fd, (genericptr_t)ep, sizeof(struct engr) + ep->engr_lth);
1056. 	    }
1057. 	    if (release_data(mode))
1058. 		dealloc_engr(ep);
1059. 	    ep = ep2;
1060. 	}
1061. 	if (perform_bwrite(mode))
1062. 	    bwrite(fd, (genericptr_t)&no_more_engr, sizeof no_more_engr);
1063. 	if (release_data(mode))
1064. 	    head_engr = 0;
1065. }
1066. 
1067. void
1068. rest_engravings(fd)
1069. int fd;
1070. {
1071. 	register struct engr *ep;
1072. 	unsigned lth;
1073. 
1074. 	head_engr = 0;
1075. 	while(1) {
1076. 		mread(fd, (genericptr_t) &lth, sizeof(unsigned));
1077. 		if(lth == 0) return;
1078. 		ep = newengr(lth);
1079. 		mread(fd, (genericptr_t) ep, sizeof(struct engr) + lth);
1080. 		ep->nxt_engr = head_engr;
1081. 		head_engr = ep;
1082. 		ep->engr_txt = (char *) (ep + 1);	/* Andreas Bormann */
1083. 		/* mark as finished for bones levels -- no problem for
1084. 		 * normal levels as the player must have finished engraving
1085. 		 * to be able to move again */
1086. 		ep->engr_time = moves;
1087. 	}
1088. }
1089. 
1090. void
1091. del_engr(ep)
1092. register struct engr *ep;
1093. {
1094. 	if (ep == head_engr) {
1095. 		head_engr = ep->nxt_engr;
1096. 	} else {
1097. 		register struct engr *ept;
1098. 
1099. 		for (ept = head_engr; ept; ept = ept->nxt_engr)
1100. 		    if (ept->nxt_engr == ep) {
1101. 			ept->nxt_engr = ep->nxt_engr;
1102. 			break;
1103. 		    }
1104. 		if (!ept) {
1105. 		    impossible("Error in del_engr?");
1106. 		    return;
1107. 		}
1108. 	}
1109. 	dealloc_engr(ep);
1110. }
1111. 
1112. /* randomly relocate an engraving */
1113. void
1114. rloc_engr(ep)
1115. struct engr *ep;
1116. {
1117. 	int tx, ty, tryct = 200;
1118. 
1119. 	do  {
1120. 	    if (--tryct < 0) return;
1121. 	    tx = rn1(COLNO-3,2);
1122. 	    ty = rn2(ROWNO);
1123. 	} while (engr_at(tx, ty) ||
1124. 		!goodpos(tx, ty, (struct monst *)0));
1125. 
1126. 	ep->engr_x = tx;
1127. 	ep->engr_y = ty;
1128. }
1129. 
1130. #endif /* OVLB */
1131. 
1132. /*engrave.c*/

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