Source:Artifact.c

Below is the full text to src/artifact.c from NetHack 3.4.3. To link to a particular line, write [[artifact.c#line123 ]], for example. 1.   /*	SCCS Id: @(#)artifact.c 3.4	2003/08/11	*/ 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 "artifact.h"  7.    #ifdef OVLB 8.   #include "artilist.h"  9.    #else 10.  STATIC_DCL struct artifact artilist[]; 11.  #endif 12.  /*  13.    * Note:  both artilist[] and artiexist[] have a dummy element #0, 14.   *	  so loops over them should normally start at #1. The primary 15.   *	  exception is the save & restore code, which doesn't care about 16.   *	  the contents, just the total size. 17.   */  18.    19.   extern boolean notonhead;	/* for long worms */ 20.   21.   #define get_artifact(o) \ 22.  		(((o)&&(o)->oartifact) ? &artilist[(int) (o)->oartifact] : 0) 23.   24.   STATIC_DCL int FDECL(spec_applies, (const struct artifact *,struct monst *)); 25.  STATIC_DCL int FDECL(arti_invoke, (struct obj*)); 26.  STATIC_DCL boolean FDECL(Mb_hit, (struct monst *magr,struct monst *mdef, 27.  				  struct obj *,int *,int,BOOLEAN_P,char *)); 28.   29.   /* The amount added to the victim's total hit points to insure that the 30.     victim will be killed even after damage bonus/penalty adjustments. 31.     Most such penalties are small, and 200 is plenty; the exception is  32. half physical damage. 3.3.1 and previous versions tried to use a very 33.     large number to account for this case; now, we just compute the fatal 34.     damage by adding it to 2 times the total hit points instead of 1 time. 35.     Note: this will still break if they have more than about half the number 36.     of hit points that will fit in a 15 bit integer. */ 37.   #define FATAL_DAMAGE_MODIFIER 200 38.   39.   #ifndef OVLB 40.  STATIC_DCL int spec_dbon_applies; 41.  STATIC_DCL xchar artidisco[NROFARTIFACTS]; 42.  #else	/* OVLB */ 43.  /* coordinate effects from spec_dbon with messages in artifact_hit */ 44.  STATIC_OVL int spec_dbon_applies = 0; 45.   46.   /* flags including which artifacts have already been created */ 47.  static boolean artiexist[1+NROFARTIFACTS+1]; 48.  /* and a discovery list for them (no dummy first entry here) */ 49.  STATIC_OVL xchar artidisco[NROFARTIFACTS]; 50.   51.   STATIC_DCL void NDECL(hack_artifacts); 52.  STATIC_DCL boolean FDECL(attacks, (int,struct obj *)); 53.   54.   /* handle some special cases; must be called after u_init */ 55.  STATIC_OVL void 56.  hack_artifacts 57.  {  58.   	struct artifact *art; 59.  	int alignmnt = aligns[flags.initalign].value; 60.   61.   	/* Fix up the alignments of "gift" artifacts */ 62.  	for (art = artilist+1; art->otyp; art++) 63.  	    if (art->role == Role_switch && art->alignment != A_NONE) 64.  		art->alignment = alignmnt; 65.   66.   	/* Excalibur can be used by any lawful character, not just knights */ 67.  	if (!Role_if(PM_KNIGHT)) 68.  	    artilist[ART_EXCALIBUR].role = NON_PM; 69.   70.   	/* Fix up the quest artifact */ 71.  	if (urole.questarti) { 72.  	    artilist[urole.questarti].alignment = alignmnt; 73.  	    artilist[urole.questarti].role = Role_switch; 74.  	}  75.   	return; 76.  }  77.    78.   /* zero out the artifact existence list */ 79.  void 80.  init_artifacts 81.  {  82.   	(void) memset((genericptr_t) artiexist, 0, sizeof artiexist); 83.  	(void) memset((genericptr_t) artidisco, 0, sizeof artidisco); 84.  	hack_artifacts; 85.  }  86.    87.   void 88.  save_artifacts(fd) 89.  int fd; 90.  {  91.   	bwrite(fd, (genericptr_t) artiexist, sizeof artiexist); 92.  	bwrite(fd, (genericptr_t) artidisco, sizeof artidisco); 93.  }  94.    95.   void 96.  restore_artifacts(fd) 97.  int fd; 98.  {  99.   	mread(fd, (genericptr_t) artiexist, sizeof artiexist); 100. 	mread(fd, (genericptr_t) artidisco, sizeof artidisco); 101. 	hack_artifacts;	/* redo non-saved special cases */ 102. }  103.   104.  const char * 105. artiname(artinum) 106. int artinum; 107. {  108.  	if (artinum <= 0 || artinum > NROFARTIFACTS) return(""); 109. 	return(artilist[artinum].name); 110. }  111.   112.  /*  113.     Make an artifact. If a specific alignment is specified, then an object of 114. the appropriate alignment is created from scratch, or 0 is returned if 115. none is available. (If at least one aligned artifact has already been 116.     given, then unaligned ones also become eligible for this.) 117.    If no alignment is given, then 'otmp' is converted 118.    into an artifact of matching type, or returned as-is if that's not possible. 119.    For the 2nd case, caller should use ``obj = mk_artifact(obj, A_NONE);'' 120.    for the 1st, ``obj = mk_artifact((struct obj *)0, some_alignment);''. 121.  */  122.  struct obj * 123. mk_artifact(otmp, alignment) 124. struct obj *otmp;	/* existing object; ignored if alignment specified */ 125. aligntyp alignment;	/* target alignment, or A_NONE */ 126. {  127.  	const struct artifact *a; 128. 	int n, m;  129. boolean by_align = (alignment != A_NONE); 130. 	short o_typ = (by_align || !otmp) ? 0 : otmp->otyp; 131. 	boolean unique = !by_align && otmp && objects[o_typ].oc_unique; 132. 	short eligible[NROFARTIFACTS]; 133.  134.  	/* gather eligible artifacts */ 135. 	for (n = 0, a = artilist+1, m = 1; a->otyp; a++, m++) 136. 	    if ((!by_align ? a->otyp == o_typ : 137. 		    (a->alignment == alignment ||  138.  			(a->alignment == A_NONE && u.ugifts > 0))) &&  139.  		(!(a->spfx & SPFX_NOGEN) || unique) && !artiexist[m]) { 140. 		if (by_align && a->race != NON_PM && race_hostile(&mons[a->race])) 141. 		    continue;	/* skip enemies' equipment */ 142. 		else if (by_align && Role_if(a->role)) 143. 		    goto make_artif;	/* 'a' points to the desired one */ 144. 		else 145. 		    eligible[n++] = m;  146. } 147.   148.  	if (n) {		/* found at least one candidate */ 149. 	    m = eligible[rn2(n)];	/* [0..n-1] */ 150. 	    a = &artilist[m]; 151.  152.  	    /* make an appropriate object if necessary, then christen it */ 153. make_artif: if (by_align) otmp = mksobj((int)a->otyp, TRUE, FALSE); 154. 	    otmp = oname(otmp, a->name); 155. 	    otmp->oartifact = m;  156. artiexist[m] = TRUE; 157. 	} else { 158. 	    /* nothing appropriate could be found; return the original object */ 159. 	    if (by_align) otmp = 0;	/* (there was no original object) */ 160. 	}  161.  	return otmp; 162. }  163.   164.  /*  165.   * Returns the full name (with articles and correct capitalization) of an  166. * artifact named "name" if one exists, or NULL, it not. 167.  * The given name must be rather close to the real name for it to match. 168.  * The object type of the artifact is returned in otyp if the return value 169.  * is non-NULL. 170.  */  171.  const char* 172. artifact_name(name, otyp) 173. const char *name; 174. short *otyp; 175. {  176.      register const struct artifact *a; 177.     register const char *aname; 178.  179.      if(!strncmpi(name, "the ", 4)) name += 4; 180.  181.      for (a = artilist+1; a->otyp; a++) { 182. 	aname = a->name; 183. 	if(!strncmpi(aname, "the ", 4)) aname += 4; 184. 	if(!strcmpi(name, aname)) { 185. 	    *otyp = a->otyp; 186. 	    return a->name; 187. 	}  188.      }  189.   190.      return (char *)0; 191. }  192.   193.  boolean 194. exist_artifact(otyp, name) 195. register int otyp; 196. register const char *name; 197. {  198.  	register const struct artifact *a; 199. 	register boolean *arex; 200.  201.  	if (otyp && *name) 202. 	    for (a = artilist+1,arex = artiexist+1; a->otyp; a++,arex++) 203. 		if ((int) a->otyp == otyp && !strcmp(a->name, name)) 204. 		    return *arex; 205. 	return FALSE; 206. }  207.   208.  void 209. artifact_exists(otmp, name, mod) 210. register struct obj *otmp; 211. register const char *name; 212. register boolean mod; 213. {  214.  	register const struct artifact *a; 215.  216.  	if (otmp && *name) 217. 	    for (a = artilist+1; a->otyp; a++) 218. 		if (a->otyp == otmp->otyp && !strcmp(a->name, name)) { 219. 		    register int m = a - artilist; 220. 		    otmp->oartifact = (char)(mod ? m : 0); 221. 		    otmp->age = 0; 222. 		    if(otmp->otyp == RIN_INCREASE_DAMAGE) 223. 			otmp->spe = 0; 224. 		    artiexist[m] = mod; 225. 		    break; 226. 		}  227.  	return; 228. }  229.   230.  int 231. nartifact_exist 232. {  233.      int a = 0; 234.     int n = SIZE(artiexist); 235.  236.      while(n > 1) 237. 	if(artiexist[--n]) a++; 238.  239.      return a;  240. } 241.  #endif /* OVLB */ 242. #ifdef OVL0 243.  244.  boolean 245. spec_ability(otmp, abil) 246. struct obj *otmp; 247. unsigned long abil; 248. {  249.  	const struct artifact *arti = get_artifact(otmp); 250.  251.  	return((boolean)(arti && (arti->spfx & abil))); 252. }  253.   254.  /* used so that callers don't need to known about SPFX_ codes */ 255. boolean 256. confers_luck(obj) 257. struct obj *obj; 258. {  259.      /* might as well check for this too */ 260.     if (obj->otyp == LUCKSTONE) return TRUE; 261.  262.      return (obj->oartifact && spec_ability(obj, SPFX_LUCK)); 263. }  264.   265.  /* used to check whether a monster is getting reflection from an artifact */ 266. boolean 267. arti_reflects(obj) 268. struct obj *obj; 269. {  270.      const struct artifact *arti = get_artifact(obj); 271.  272.      if (arti) { 273. 	/* while being worn */ 274. 	if ((obj->owornmask & ~W_ART) && (arti->spfx & SPFX_REFLECT)) 275. 	    return TRUE; 276. 	/* just being carried */ 277. 	if (arti->cspfx & SPFX_REFLECT) return TRUE; 278.     }  279.      return FALSE; 280. }  281.   282.  #endif /* OVL0 */ 283. #ifdef OVLB 284.  285.  boolean 286. restrict_name(otmp, name)  /* returns 1 if name is restricted for otmp->otyp */ 287. register struct obj *otmp; 288. register const char *name; 289. {  290.  	register const struct artifact *a; 291. 	register const char *aname; 292.  293.  	if (!*name) return FALSE; 294. 	if (!strncmpi(name, "the ", 4)) name += 4; 295.  296.  		/* Since almost every artifact is SPFX_RESTR, it doesn't cost 297. 		   us much to do the string comparison before the spfx check. 298. 		   Bug fix:  don't name multiple elven daggers "Sting". 299. 		 */  300.  	for (a = artilist+1; a->otyp; a++) { 301. 	    if (a->otyp != otmp->otyp) continue; 302. 	    aname = a->name; 303. 	    if (!strncmpi(aname, "the ", 4)) aname += 4; 304. 	    if (!strcmp(aname, name)) 305. 		return ((boolean)((a->spfx & (SPFX_NOGEN|SPFX_RESTR)) != 0 || 306. 			otmp->quan > 1L)); 307. 	}  308.   309.  	return FALSE; 310. }  311.   312.  STATIC_OVL boolean 313. attacks(adtyp, otmp) 314. register int adtyp; 315. register struct obj *otmp; 316. {  317.  	register const struct artifact *weap; 318.  319.  	if ((weap = get_artifact(otmp)) != 0) 320. 		return((boolean)(weap->attk.adtyp == adtyp)); 321. 	return FALSE; 322. }  323.   324.  boolean 325. defends(adtyp, otmp) 326. register int adtyp; 327. register struct obj *otmp; 328. {  329.  	register const struct artifact *weap; 330.  331.  	if ((weap = get_artifact(otmp)) != 0) 332. 		return((boolean)(weap->defn.adtyp == adtyp)); 333. 	return FALSE; 334. }  335.   336.  /* used for monsters */ 337. boolean 338. protects(adtyp, otmp) 339. int adtyp; 340. struct obj *otmp; 341. {  342.  	register const struct artifact *weap; 343.  344.  	if ((weap = get_artifact(otmp)) != 0) 345. 		return (boolean)(weap->cary.adtyp == adtyp); 346. 	return FALSE; 347. }  348.   349.  /*  350.   * a potential artifact has just been worn/wielded/picked-up or  351. * unworn/unwielded/dropped. Pickup/drop only set/reset the W_ART mask. 352.  */  353.  void 354. set_artifact_intrinsic(otmp,on,wp_mask) 355. register struct obj *otmp; 356. boolean on; 357. long wp_mask; 358. {  359.  	long *mask = 0; 360. 	register const struct artifact *oart = get_artifact(otmp); 361. 	uchar dtyp; 362. 	long spfx; 363.  364.  	if (!oart) return; 365.  366.  	/* effects from the defn field */ 367. 	dtyp = (wp_mask != W_ART) ? oart->defn.adtyp : oart->cary.adtyp; 368.  369.  	if (dtyp == AD_FIRE) 370. 	    mask = &EFire_resistance; 371. 	else if (dtyp == AD_COLD) 372. 	    mask = &ECold_resistance; 373. 	else if (dtyp == AD_ELEC) 374. 	    mask = &EShock_resistance; 375. 	else if (dtyp == AD_MAGM) 376. 	    mask = &EAntimagic; 377. 	else if (dtyp == AD_DISN) 378. 	    mask = &EDisint_resistance; 379. 	else if (dtyp == AD_DRST) 380. 	    mask = &EPoison_resistance; 381.  382.  	if (mask && wp_mask == W_ART && !on) { 383. 	    /* find out if some other artifact also confers this intrinsic */ 384. 	    /* if so, leave the mask alone */ 385. 	    register struct obj* obj; 386. 	    for(obj = invent; obj; obj = obj->nobj) 387. 		if(obj != otmp && obj->oartifact) { 388. 		    register const struct artifact *art = get_artifact(obj); 389. 		    if(art->cary.adtyp == dtyp) { 390. 			mask = (long *) 0; 391. 			break; 392. 		    }  393.  		}  394.  	}  395.  	if (mask) { 396. 	    if (on) *mask |= wp_mask; 397. 	    else *mask &= ~wp_mask; 398. 	}  399.   400.  	/* intrinsics from the spfx field; there could be more than one */ 401. 	spfx = (wp_mask != W_ART) ? oart->spfx : oart->cspfx; 402. 	if(spfx && wp_mask == W_ART && !on) { 403. 	    /* don't change any spfx also conferred by other artifacts */ 404. 	    register struct obj* obj; 405. 	    for(obj = invent; obj; obj = obj->nobj) 406. 		if(obj != otmp && obj->oartifact) { 407. 		    register const struct artifact *art = get_artifact(obj); 408. 		    spfx &= ~art->cspfx; 409. 		}  410.  	}  411.   412.  	if (spfx & SPFX_SEARCH) { 413. 	    if(on) ESearching |= wp_mask; 414. 	    else ESearching &= ~wp_mask; 415. 	}  416.  	if (spfx & SPFX_HALRES) { 417. 	    /* make_hallucinated must (re)set the mask itself to get 418. 	     * the display right */ 419. 	    /* restoring needed because this is the only artifact intrinsic 420. 	     * that can print a message--need to guard against being printed 421. 	     * when restoring a game 422. 	     */  423.  	    (void) make_hallucinated((long)!on, restoring ? FALSE : TRUE, wp_mask); 424. 	}  425.  	if (spfx & SPFX_ESP) { 426. 	    if(on) ETelepat |= wp_mask; 427. 	    else ETelepat &= ~wp_mask; 428. 	    see_monsters; 429. 	}  430.  	if (spfx & SPFX_STLTH) { 431. 	    if (on) EStealth |= wp_mask; 432. 	    else EStealth &= ~wp_mask; 433. 	}  434.  	if (spfx & SPFX_REGEN) { 435. 	    if (on) ERegeneration |= wp_mask; 436. 	    else ERegeneration &= ~wp_mask; 437. 	}  438.  	if (spfx & SPFX_TCTRL) { 439. 	    if (on) ETeleport_control |= wp_mask; 440. 	    else ETeleport_control &= ~wp_mask; 441. 	}  442.  	if (spfx & SPFX_WARN) { 443. 	    if (spec_m2(otmp)) { 444. 	    	if (on) { 445. 			EWarn_of_mon |= wp_mask; 446. 			flags.warntype |= spec_m2(otmp); 447. 	    	} else { 448. 			EWarn_of_mon &= ~wp_mask; 449. 	    		flags.warntype &= ~spec_m2(otmp); 450. 		}  451.  		see_monsters; 452. 	    } else { 453. 		if (on) EWarning |= wp_mask; 454. 	    	else EWarning &= ~wp_mask; 455. 	    }  456.  	}  457.  	if (spfx & SPFX_EREGEN) { 458. 	    if (on) EEnergy_regeneration |= wp_mask; 459. 	    else EEnergy_regeneration &= ~wp_mask; 460. 	}  461.  	if (spfx & SPFX_HSPDAM) { 462. 	    if (on) EHalf_spell_damage |= wp_mask; 463. 	    else EHalf_spell_damage &= ~wp_mask; 464. 	}  465.  	if (spfx & SPFX_HPHDAM) { 466. 	    if (on) EHalf_physical_damage |= wp_mask; 467. 	    else EHalf_physical_damage &= ~wp_mask; 468. 	}  469.  	if (spfx & SPFX_XRAY) { 470. 	    /* this assumes that no one else is using xray_range */ 471. 	    if (on) u.xray_range = 3; 472. 	    else u.xray_range = -1; 473. 	    vision_full_recalc = 1; 474. 	}  475.  	if ((spfx & SPFX_REFLECT) && (wp_mask & W_WEP)) { 476. 	    if (on) EReflecting |= wp_mask; 477. 	    else EReflecting &= ~wp_mask; 478. 	}  479.   480.  	if(wp_mask == W_ART && !on && oart->inv_prop) { 481. 	    /* might have to turn off invoked power too */ 482. 	    if (oart->inv_prop <= LAST_PROP &&  483.  		(u.uprops[oart->inv_prop].extrinsic & W_ARTI)) 484. 		(void) arti_invoke(otmp); 485. 	}  486.  }  487.   488.  /*  489.   * creature (usually player) tries to touch (pick up or wield) an artifact obj. 490.  * Returns 0 if the object refuses to be touched. 491.  * This routine does not change any object chains. 492.  * Ignores such things as gauntlets, assuming the artifact is not 493.  * fooled by such trappings. 494.  */  495.  int 496. touch_artifact(obj,mon) 497.     struct obj *obj; 498.     struct monst *mon; 499. {  500.      register const struct artifact *oart = get_artifact(obj); 501.     boolean badclass, badalign, self_willed, yours; 502.  503.      if(!oart) return 1; 504.  505.      yours = (mon == &youmonst); 506.     /* all quest artifacts are self-willed; it this ever changes, `badclass' 507.        will have to be extended to explicitly include quest artifacts */ 508.     self_willed = ((oart->spfx & SPFX_INTEL) != 0); 509.     if (yours) { 510. 	badclass = self_willed && 511. 		   ((oart->role != NON_PM && !Role_if(oart->role)) ||  512.  		    (oart->race != NON_PM && !Race_if(oart->race))); 513. 	badalign = (oart->spfx & SPFX_RESTR) && oart->alignment != A_NONE && 514. 		   (oart->alignment != u.ualign.type || u.ualign.record < 0); 515.     } else if (!is_covetous(mon->data) && !is_mplayer(mon->data)) { 516. 	badclass = self_willed && 517. 		   oart->role != NON_PM && oart != &artilist[ART_EXCALIBUR]; 518. 	badalign = (oart->spfx & SPFX_RESTR) && oart->alignment != A_NONE && 519. 		   (oart->alignment != sgn(mon->data->maligntyp)); 520.     } else {    /* an M3_WANTSxxx monster or a fake player */ 521. 	/* special monsters trying to take the Amulet, invocation tools or  522. quest item can touch anything except for `spec_applies' artifacts */ 523. 	badclass = badalign = FALSE; 524.     }  525.      /* weapons which attack specific categories of monsters are 526.        bad for them even if their alignments happen to match */ 527.     if (!badalign && (oart->spfx & SPFX_DBONUS) != 0) { 528. 	struct artifact tmp; 529.  530.  	tmp = *oart; 531. 	tmp.spfx &= SPFX_DBONUS; 532. 	badalign = !!spec_applies(&tmp, mon); 533.     }  534.   535.      if (((badclass || badalign) && self_willed) ||  536.         (badalign && (!yours || !rn2(4))))  { 537. 	int dmg; 538. 	char buf[BUFSZ]; 539.  540.  	if (!yours) return 0; 541. 	You("are blasted by %s power!", s_suffix(the(xname(obj)))); 542. 	dmg = d((Antimagic ? 2 : 4), (self_willed ? 10 : 4)); 543.  	Sprintf(buf, "touching %s", oart->name); 544. 	losehp(dmg, buf, KILLED_BY); 545. 	exercise(A_WIS, FALSE); 546.     }  547.   548.      /* can pick it up unless you're totally non-synch'd with the artifact */ 549.     if (badclass && badalign && self_willed) { 550. 	if (yours) pline("%s your grasp!", Tobjnam(obj, "evade")); 551. 	return 0; 552.     }  553.   554.      return 1; 555. }  556.   557.  #endif /* OVLB */ 558. #ifdef OVL1 559.  560.  /* decide whether an artifact's special attacks apply against mtmp */ 561. STATIC_OVL int 562. spec_applies(weap, mtmp) 563. register const struct artifact *weap; 564. struct monst *mtmp; 565. {  566.  	struct permonst *ptr; 567. 	boolean yours; 568.  569.  	if(!(weap->spfx & (SPFX_DBONUS | SPFX_ATTK))) 570. 	    return(weap->attk.adtyp == AD_PHYS); 571.  572.  	yours = (mtmp == &youmonst); 573. 	ptr = mtmp->data; 574.  575.  	if (weap->spfx & SPFX_DMONS) { 576. 	    return (ptr == &mons[(int)weap->mtype]); 577. 	} else if (weap->spfx & SPFX_DCLAS) { 578. 	    return (weap->mtype == (unsigned long)ptr->mlet); 579. 	} else if (weap->spfx & SPFX_DFLAG1) { 580. 	    return ((ptr->mflags1 & weap->mtype) != 0L); 581. 	} else if (weap->spfx & SPFX_DFLAG2) { 582. 	    return ((ptr->mflags2 & weap->mtype) || (yours && 583. 			((!Upolyd && (urace.selfmask & weap->mtype)) ||  584.  			 ((weap->mtype & M2_WERE) && u.ulycn >= LOW_PM)))); 585. 	} else if (weap->spfx & SPFX_DALIGN) { 586. 	    return yours ? (u.ualign.type != weap->alignment) : 587. 			   (ptr->maligntyp == A_NONE ||  588.  				sgn(ptr->maligntyp) != weap->alignment); 589. 	} else if (weap->spfx & SPFX_ATTK) { 590. 	    struct obj *defending_weapon = (yours ? uwep : MON_WEP(mtmp)); 591.  592.  	    if (defending_weapon && defending_weapon->oartifact &&  593.  		    defends((int)weap->attk.adtyp, defending_weapon)) 594. 		return FALSE; 595. 	    switch(weap->attk.adtyp) { 596. 		case AD_FIRE: 597. 			return !(yours ? Fire_resistance : resists_fire(mtmp)); 598. 		case AD_COLD: 599. 			return !(yours ? Cold_resistance : resists_cold(mtmp)); 600. 		case AD_ELEC: 601. 			return !(yours ? Shock_resistance : resists_elec(mtmp)); 602. 		case AD_MAGM: 603. 		case AD_STUN: 604. 			return !(yours ? Antimagic : (rn2(100) < ptr->mr)); 605. 		case AD_DRST: 606. 			return !(yours ? Poison_resistance : resists_poison(mtmp)); 607. 		case AD_DRLI: 608. 			return !(yours ? Drain_resistance : resists_drli(mtmp)); 609. 		case AD_STON: 610. 			return !(yours ? Stone_resistance : resists_ston(mtmp)); 611. 		default:	impossible("Weird weapon special attack."); 612. 	    }  613.  	}  614.  	return(0); 615. }  616.   617.  /* return the M2 flags of monster that an artifact's special attacks apply against */ 618. long 619. spec_m2(otmp) 620. struct obj *otmp; 621. {  622.  	register const struct artifact *artifact = get_artifact(otmp); 623. 	if (artifact) 624. 		return artifact->mtype; 625. 	return 0L; 626. }  627.   628.  /* special attack bonus */ 629. int 630. spec_abon(otmp, mon) 631. struct obj *otmp; 632. struct monst *mon; 633. {  634.  	register const struct artifact *weap = get_artifact(otmp); 635.  636.  	/* no need for an extra check for `NO_ATTK' because this will 637. 	   always return 0 for any artifact which has that attribute */ 638.  639.  	if (weap && weap->attk.damn && spec_applies(weap, mon)) 640. 	    return rnd((int)weap->attk.damn); 641. 	return 0; 642. }  643.   644.  /* special damage bonus */ 645. int 646. spec_dbon(otmp, mon, tmp) 647. struct obj *otmp; 648. struct monst *mon; 649. int tmp; 650. {  651.  	register const struct artifact *weap = get_artifact(otmp); 652.  653.  	if (!weap || (weap->attk.adtyp == AD_PHYS && /* check for `NO_ATTK' */ 654. 			weap->attk.damn == 0 && weap->attk.damd == 0)) 655. 	    spec_dbon_applies = FALSE; 656. 	else 657. 	    spec_dbon_applies = spec_applies(weap, mon); 658.  659.  	if (spec_dbon_applies) 660. 	    return weap->attk.damd ? rnd((int)weap->attk.damd) : max(tmp,1); 661. 	return 0; 662. }  663.   664.  /* add identified artifact to discoveries list */ 665. void 666. discover_artifact(m) 667. xchar m;  668. { 669.      int i;  670. 671.     /* look for this artifact in the discoveries list; 672.        if we hit an empty slot then it's not present, so add it */ 673.     for (i = 0; i < NROFARTIFACTS; i++) 674. 	if (artidisco[i] == 0 || artidisco[i] == m) { 675. 	    artidisco[i] = m;  676. return; 677. 	}  678.      /* there is one slot per artifact, so we should never reach the 679.        end without either finding the artifact or an empty slot... */ 680.      impossible("couldn't discover artifact (%d)", (int)m); 681. }  682.   683.  /* used to decide whether an artifact has been fully identified */ 684. boolean 685. undiscovered_artifact(m) 686. xchar m;  687. { 688.      int i;  689. 690.     /* look for this artifact in the discoveries list; 691.        if we hit an empty slot then it's undiscovered */ 692.     for (i = 0; i < NROFARTIFACTS; i++) 693. 	if (artidisco[i] == m)  694. return FALSE; 695. 	else if (artidisco[i] == 0) 696. 	    break; 697.     return TRUE; 698. }  699.   700.  /* display a list of discovered artifacts; return their count */ 701. int 702. disp_artifact_discoveries(tmpwin) 703. winid tmpwin;		/* supplied by dodiscover */ 704. {  705.      int i, m, otyp; 706.     char buf[BUFSZ]; 707.  708.      for (i = 0; i < NROFARTIFACTS; i++) { 709. 	if (artidisco[i] == 0) break;	/* empty slot implies end of list */ 710. 	if (i == 0) putstr(tmpwin, iflags.menu_headings, "Artifacts"); 711. 	m = artidisco[i]; 712. 	otyp = artilist[m].otyp; 713. 	Sprintf(buf, "  %s [%s %s]", artiname(m),  714.  		align_str(artilist[m].alignment), simple_typename(otyp)); 715. 	putstr(tmpwin, 0, buf); 716.     }  717.      return i;  718. } 719.   720.  #endif /* OVL1 */ 721.  722.  #ifdef OVLB 723.  724.   725.  	/*  726.  	 * Magicbane's intrinsic magic is incompatible with normal 727. 	 * enchantment magic. Thus, its effects have a negative 728. 	 * dependence on spe. Against low mr victims, it typically 729. 	 * does "double athame" damage, 2d4. Occasionally, it will 730. 	 * cast unbalancing magic which effectively averages out to  731. * 4d4 damage (3d4 against high mr victims), for spe = 0. 732. 	 *  733.  	 * Prior to 3.4.1, the cancel (aka purge) effect always 734. 	 * included the scare effect too; now it's one or the other. 735. 	 * Likewise, the stun effect won't be combined with either 736. 	 * of those two; it will be chosen separately or possibly 737. 	 * used as a fallback when scare or cancel fails. 738. 	 *  739.  	 * [Historical note: a change to artifact_hit for 3.4.0 740. 	 * unintentionally made all of Magicbane's special effects 741. 	 * be blocked if the defender successfully saved against a  742. * stun attack. As of 3.4.1, those effects can occur but 743. 	 * will be slightly less likely than they were in 3.3.x.] 744. 	 */  745.  #define MB_MAX_DIEROLL		8	/* rolls above this aren't magical */ 746. static const char * const mb_verb[2][4] = { 747. 	{ "probe", "stun", "scare", "cancel" }, 748. 	{ "prod", "amaze", "tickle", "purge" }, 749. };  750.  #define MB_INDEX_PROBE		0 751. #define MB_INDEX_STUN		1 752. #define MB_INDEX_SCARE		2 753. #define MB_INDEX_CANCEL		3 754.  755.  /* called when someone is being hit by Magicbane */ 756. STATIC_OVL boolean 757. Mb_hit(magr, mdef, mb, dmgptr, dieroll, vis, hittee) 758. struct monst *magr, *mdef;	/* attacker and defender */ 759. struct obj *mb;			/* Magicbane */ 760. int *dmgptr;			/* extra damage target will suffer */ 761. int dieroll;			/* d20 that has already scored a hit */ 762. boolean vis;			/* whether the action can be seen */ 763. char *hittee;			/* target's name: "you" or mon_nam(mdef) */ 764. {  765.      struct permonst *old_uasmon; 766.     const char *verb; 767.     boolean youattack = (magr == &youmonst), 768. 	    youdefend = (mdef == &youmonst), 769. 	    resisted = FALSE, do_stun, do_confuse, result; 770.     int attack_indx, scare_dieroll = MB_MAX_DIEROLL / 2; 771.  772.      result = FALSE;		/* no message given yet */ 773.     /* the most severe effects are less likely at higher enchantment */ 774.     if (mb->spe >= 3) 775. 	scare_dieroll /= (1 << (mb->spe / 3)); 776.     /* if target successfully resisted the artifact damage bonus, 777.        reduce overall likelihood of the assorted special effects */ 778.     if (!spec_dbon_applies) dieroll += 1; 779.  780.      /* might stun even when attempting a more severe effect, but 781.        in that case it will only happen if the other effect fails; 782.        extra damage will apply regardless; 3.4.1: sometimes might 783.        just probe even when it hasn't been enchanted */ 784.     do_stun = (max(mb->spe,0) < rn2(spec_dbon_applies ? 11 : 7)); 785.   786.      /* the special effects also boost physical damage; increments are 787.        generally cumulative, but since the stun effect is based on a  788. different criterium its damage might not be included; the base 789.        damage is either 1d4 (athame) or 2d4 (athame+spec_dbon) depending 790.        on target's resistance check against AD_STUN (handled by caller) 791.        [note that a successful save against AD_STUN doesn't actually 792.        prevent the target from ending up stunned] */ 793.     attack_indx = MB_INDEX_PROBE; 794.     *dmgptr += rnd(4);			/* (2..3)d4 */ 795.     if (do_stun) { 796. 	attack_indx = MB_INDEX_STUN; 797. 	*dmgptr += rnd(4);		/* (3..4)d4 */ 798.     }  799.      if (dieroll <= scare_dieroll) { 800. 	attack_indx = MB_INDEX_SCARE; 801. 	*dmgptr += rnd(4);		/* (3..5)d4 */ 802.     }  803.      if (dieroll <= (scare_dieroll / 2)) { 804. 	attack_indx = MB_INDEX_CANCEL; 805. 	*dmgptr += rnd(4);		/* (4..6)d4 */ 806.     }  807.   808.      /* give the hit message prior to inflicting the effects */ 809.     verb = mb_verb[!!Hallucination][attack_indx]; 810.     if (youattack || youdefend || vis) { 811. 	result = TRUE; 812. 	pline_The("magic-absorbing blade %s %s!",  813.  		  vtense((const char *)0, verb), hittee); 814. 	/* assume probing has some sort of noticeable feedback 815. 	   even if it is being done by one monster to another */ 816. 	if (attack_indx == MB_INDEX_PROBE && !canspotmon(mdef)) 817. 	    map_invisible(mdef->mx, mdef->my); 818.     }  819.   820.      /* now perform special effects */ 821.     switch (attack_indx) { 822.     case MB_INDEX_CANCEL: 823. 	old_uasmon = youmonst.data; 824. 	/* No mdef->mcan check: even a cancelled monster can be polymorphed 825. 	 * into a golem, and the "cancel" effect acts as if some magical 826. 	 * energy remains in spellcasting defenders to be absorbed later. 827. 	 */  828.  	if (!cancel_monst(mdef, mb, youattack, FALSE, FALSE)) { 829. 	    resisted = TRUE; 830. 	} else { 831. 	    do_stun = FALSE; 832. 	    if (youdefend) { 833. 		if (youmonst.data != old_uasmon) 834. 		    *dmgptr = 0;    /* rehumanized, so no more damage */ 835. 		if (u.uenmax > 0) { 836. 		    You("lose magical energy!"); 837. 		    u.uenmax--; 838. 		    if (u.uen > 0) u.uen--; 839. 		    flags.botl = 1; 840. 		}  841.  	    } else { 842. 		if (mdef->data == &mons[PM_CLAY_GOLEM]) 843. 		    mdef->mhp = 1;	/* cancelled clay golems will die */ 844. 		if (youattack && attacktype(mdef->data, AT_MAGC)) { 845. 		    You("absorb magical energy!"); 846. 		    u.uenmax++; 847. 		    u.uen++; 848. 		    flags.botl = 1; 849. 		}  850.  	    }  851.  	}  852.  	break; 853.  854.      case MB_INDEX_SCARE: 855. 	if (youdefend) { 856. 	    if (Antimagic) { 857. 		resisted = TRUE; 858. 	    } else { 859. 		nomul(-3); 860. 		nomovemsg = ""; 861. 		if (magr && magr == u.ustuck && sticks(youmonst.data)) { 862. 		    u.ustuck = (struct monst *)0; 863. 		    You("release %s!", mon_nam(magr)); 864. 		}  865.  	    }  866.  	} else { 867. 	    if (rn2(2) && resist(mdef, WEAPON_CLASS, 0, NOTELL)) 868. 		resisted = TRUE; 869. 	    else 870. 		monflee(mdef, 3, FALSE, (mdef->mhp > *dmgptr)); 871. 	}  872.  	if (!resisted) do_stun = FALSE; 873. 	break; 874.  875.      case MB_INDEX_STUN: 876. 	do_stun = TRUE;		/* (this is redundant...) */ 877. 	break; 878.  879.      case MB_INDEX_PROBE: 880. 	if (youattack && (mb->spe == 0 || !rn2(3 * abs(mb->spe)))) { 881. 	    pline_The("%s is insightful.", verb); 882. 	    /* pre-damage status */ 883. 	    probe_monster(mdef); 884. 	}  885.  	break; 886.     }  887.      /* stun if that was selected and a worse effect didn't occur */ 888.     if (do_stun) { 889. 	if (youdefend) 890. 	    make_stunned((HStun + 3), FALSE); 891. 	else 892. 	    mdef->mstun = 1; 893. 	/* avoid extra stun message below if we used mb_verb["stun"] above */ 894. 	if (attack_indx == MB_INDEX_STUN) do_stun = FALSE; 895.     }  896.      /* lastly, all this magic can be confusing... */ 897.      do_confuse = !rn2(12); 898.     if (do_confuse) { 899. 	if (youdefend) 900. 	    make_confused(HConfusion + 4, FALSE); 901. 	else 902. 	    mdef->mconf = 1; 903.     }  904.   905.      if (youattack || youdefend || vis) { 906. 	(void) upstart(hittee);	/* capitalize */ 907. 	if (resisted) { 908. 	    pline("%s %s!", hittee, vtense(hittee, "resist")); 909. 	    shieldeff(youdefend ? u.ux : mdef->mx,  910.  		      youdefend ? u.uy : mdef->my); 911. 	}  912.  	if ((do_stun || do_confuse) && flags.verbose) { 913. 	    char buf[BUFSZ]; 914.  915.  	    buf[0] = '\0'; 916. 	    if (do_stun) Strcat(buf, "stunned"); 917. 	    if (do_stun && do_confuse) Strcat(buf, " and "); 918. 	    if (do_confuse) Strcat(buf, "confused"); 919. 	    pline("%s %s %s%c", hittee, vtense(hittee, "are"),  920.  		  buf, (do_stun && do_confuse) ? '!' : '.'); 921. 	}  922.      }  923.   924.      return result; 925. }  926.     927.  /* Function used when someone attacks someone else with an artifact 928.  * weapon. Only adds the special (artifact) damage, and returns a 1 if it 929. * did something special (in which case the caller won't print the normal 930.   * hit message). This should be called once upon every artifact attack; 931.  * dmgval no longer takes artifact bonuses into account. Possible 932.  * extension: change the killer so that when an orc kills you with 933.  * Stormbringer it's "killed by Stormbringer" instead of "killed by an orc". 934.  */  935.  boolean 936. artifact_hit(magr, mdef, otmp, dmgptr, dieroll) 937. struct monst *magr, *mdef; 938. struct obj *otmp; 939. int *dmgptr; 940. int dieroll; /* needed for Magicbane and vorpal blades */ 941. {  942.  	boolean youattack = (magr == &youmonst); 943. 	boolean youdefend = (mdef == &youmonst); 944. 	boolean vis = (!youattack && magr && cansee(magr->mx, magr->my)) 945. 	    || (!youdefend && cansee(mdef->mx, mdef->my)) 946. 	    || (youattack && u.uswallow && mdef == u.ustuck && !Blind); 947. 	boolean realizes_damage; 948. 	const char *wepdesc; 949. 	static const char you[] = "you"; 950. 	char hittee[BUFSZ]; 951.  952.  	Strcpy(hittee, youdefend ? you : mon_nam(mdef)); 953.  954.  	/* The following takes care of most of the damage, but not all-- 955. 	 * the exception being for level draining, which is specially 956. 	 * handled. Messages are done in this function, however. 957. 	 */  958.  	*dmgptr += spec_dbon(otmp, mdef, *dmgptr); 959.  960.  	if (youattack && youdefend) { 961. 	    impossible("attacking yourself with weapon?"); 962. 	    return FALSE; 963. 	}  964.   965.  	realizes_damage = (youdefend || vis ||  966.  			   /* feel the effect even if not seen */  967.  			   (youattack && mdef == u.ustuck)); 968.  969.  	/* the four basic attacks: fire, cold, shock and missiles */ 970. 	if (attacks(AD_FIRE, otmp)) { 971. 	    if (realizes_damage) 972. 		pline_The("fiery blade %s %s%c",  973.  			!spec_dbon_applies ? "hits" :  974.  			(mdef->data == &mons[PM_WATER_ELEMENTAL]) ?  975.  			"vaporizes part of" : "burns",  976.  			hittee, !spec_dbon_applies ? '.' : '!'); 977. 	    if (!rn2(4)) (void) destroy_mitem(mdef, POTION_CLASS, AD_FIRE); 978. 	    if (!rn2(4)) (void) destroy_mitem(mdef, SCROLL_CLASS, AD_FIRE); 979. 	    if (!rn2(7)) (void) destroy_mitem(mdef, SPBOOK_CLASS, AD_FIRE); 980. 	    if (youdefend && Slimed) burn_away_slime; 981. 	    return realizes_damage; 982. 	}  983.  	if (attacks(AD_COLD, otmp)) { 984. 	    if (realizes_damage) 985. 		pline_The("ice-cold blade %s %s%c",  986.  			!spec_dbon_applies ? "hits" : "freezes",  987.  			hittee, !spec_dbon_applies ? '.' : '!'); 988. 	    if (!rn2(4)) (void) destroy_mitem(mdef, POTION_CLASS, AD_COLD); 989. 	    return realizes_damage; 990. 	}  991.  	if (attacks(AD_ELEC, otmp)) { 992. 	    if (realizes_damage) 993. 		pline_The("massive hammer hits%s %s%c",  994.  			  !spec_dbon_applies ? "" : "!  Lightning strikes",  995.  			  hittee, !spec_dbon_applies ? '.' : '!'); 996. 	    if (!rn2(5)) (void) destroy_mitem(mdef, RING_CLASS, AD_ELEC); 997. 	    if (!rn2(5)) (void) destroy_mitem(mdef, WAND_CLASS, AD_ELEC); 998. 	    return realizes_damage; 999. 	}  1000. 	if (attacks(AD_MAGM, otmp)) { 1001. 	   if (realizes_damage) 1002. 		pline_The("imaginary widget hits%s %s%c", 1003. 			  !spec_dbon_applies ? "" :  1004. 				"!  A hail of magic missiles strikes",  1005. 			  hittee, !spec_dbon_applies ? '.' : '!'); 1006. 	   return realizes_damage; 1007. 	} 1008.  1009. 	if (attacks(AD_STUN, otmp) && dieroll <= MB_MAX_DIEROLL) { 1010. 	   /* Magicbane's special attacks (possibly modifies hittee[]) */ 1011. 	   return Mb_hit(magr, mdef, otmp, dmgptr, dieroll, vis, hittee); 1012. 	} 1013.  1014. 	if (!spec_dbon_applies) { 1015. 	   /* since damage bonus didn't apply, nothing more to do; 1016. 	      no further attacks have side-effects on inventory */ 1017. 	   return FALSE; 1018. 	} 1019.  1020. 	/* We really want "on a natural 20" but Nethack does it in */ 1021. 	/* reverse from AD&D. */ 1022. 	if (spec_ability(otmp, SPFX_BEHEAD)) { 1023. 	   if (otmp->oartifact == ART_TSURUGI_OF_MURAMASA && dieroll == 1) { 1024. 		wepdesc = "The razor-sharp blade"; 1025. 		/* not really beheading, but so close, why add another SPFX */ 1026. 		if (youattack && u.uswallow && mdef == u.ustuck) { 1027. 		   You("slice %s wide open!", mon_nam(mdef)); 1028. 		   *dmgptr = 2 * mdef->mhp + FATAL_DAMAGE_MODIFIER; 1029. 		   return TRUE; 1030. 		} 1031. 		if (!youdefend) { 1032. 			/* allow normal cutworm call to add extra damage */ 1033. 			if(notonhead) 1034. 			   return FALSE; 1035. 1036. 			if (bigmonst(mdef->data)) { 1037. 				if (youattack) 1038. 					You("slice deeply into %s!", 1039. 						mon_nam(mdef)); 1040. 				else if (vis) 1041. 					pline("%s cuts deeply into %s!", 1042. 					      Monnam(magr), hittee); 1043. 				*dmgptr *= 2; 1044. 				return TRUE; 1045. 			} 1046. 			*dmgptr = 2 * mdef->mhp + FATAL_DAMAGE_MODIFIER; 1047. 			pline("%s cuts %s in half!", wepdesc, mon_nam(mdef)); 1048. 			otmp->dknown = TRUE; 1049. 			return TRUE; 1050. 		} else { 1051. 			if (bigmonst(youmonst.data)) { 1052. 				pline("%s cuts deeply into you!", 1053. 				      magr ? Monnam(magr) : wepdesc); 1054. 				*dmgptr *= 2; 1055. 				return TRUE; 1056. 			} 1057.  1058. 			/* Players with negative AC's take less damage instead 1059. 			 * of just not getting hit. We must add a large enough 1060. 			 * value to the damage so that this reduction in 1061. * damage does not prevent death. 1062. 			 */ 1063. 			*dmgptr = 2 * (Upolyd ? u.mh : u.uhp) + FATAL_DAMAGE_MODIFIER; 1064. 			pline("%s cuts you in half!", wepdesc); 1065. 			otmp->dknown = TRUE; 1066. 			return TRUE; 1067. 		} 1068. 	    } else if (otmp->oartifact == ART_VORPAL_BLADE &&  1069. 			(dieroll == 1 || mdef->data == &mons[PM_JABBERWOCK])) { 1070. 		static const char * const behead_msg[2] = { 1071. 		    "%s beheads %s!", 1072. 		    "%s decapitates %s!" 1073. 		}; 1074.  1075. 		if (youattack && u.uswallow && mdef == u.ustuck) 1076. 			return FALSE; 1077. 		wepdesc = artilist[ART_VORPAL_BLADE].name; 1078. 		if (!youdefend) { 1079. 			if (!has_head(mdef->data) || notonhead || u.uswallow) { 1080. 				if (youattack) 1081. 					pline("Somehow, you miss %s wildly.", 1082. 						mon_nam(mdef)); 1083. 				else if (vis) 1084. 					pline("Somehow, %s misses wildly.", 1085. 						mon_nam(magr)); 1086. 				*dmgptr = 0; 1087. 				return ((boolean)(youattack || vis)); 1088. 			} 1089. 			if (noncorporeal(mdef->data) || amorphous(mdef->data)) { 1090. 				pline("%s slices through %s %s.", wepdesc, 1091. 				      s_suffix(mon_nam(mdef)),  1092. 				      mbodypart(mdef,NECK)); 1093. 				return TRUE; 1094. 			} 1095. 			*dmgptr = 2 * mdef->mhp + FATAL_DAMAGE_MODIFIER; 1096. 			pline(behead_msg[rn2(SIZE(behead_msg))], 1097. 			      wepdesc, mon_nam(mdef)); 1098. 			otmp->dknown = TRUE; 1099. 			return TRUE; 1100. 		} else { 1101. 			if (!has_head(youmonst.data)) { 1102. 				pline("Somehow, %s misses you wildly.", 1103. 				      magr ? mon_nam(magr) : wepdesc); 1104. 				*dmgptr = 0; 1105. 				return TRUE; 1106. 			} 1107. 			if (noncorporeal(youmonst.data) || amorphous(youmonst.data)) { 1108. 				pline("%s slices through your %s.", 1109. 				      wepdesc, body_part(NECK)); 1110. 				return TRUE; 1111. 			} 1112. 			*dmgptr = 2 * (Upolyd ? u.mh : u.uhp) 1113. 				 + FATAL_DAMAGE_MODIFIER; 1114. 			pline(behead_msg[rn2(SIZE(behead_msg))], 1115. 			      wepdesc, "you"); 1116. 			otmp->dknown = TRUE; 1117. 			/* Should amulets fall off? */ 1118. 			return TRUE; 1119. 		} 1120. 	    }  1121. 	}  1122. 	if (spec_ability(otmp, SPFX_DRLI)) { 1123. 		if (!youdefend) { 1124. 			if (vis) { 1125. 			   if(otmp->oartifact == ART_STORMBRINGER) 1126. 				pline_The("%s blade draws the life from %s!", 1127. 				      hcolor(NH_BLACK),  1128. 				      mon_nam(mdef)); 1129. 			   else 1130. 				pline("%s draws the life from %s!", 1131. 				      The(distant_name(otmp, xname)),  1132. 				      mon_nam(mdef)); 1133. 			} 1134. 			if (mdef->m_lev == 0) { 1135. 			   *dmgptr = 2 * mdef->mhp + FATAL_DAMAGE_MODIFIER; 1136. 			} else { 1137. 			   int drain = rnd(8); 1138. 			   *dmgptr += drain; 1139. 			   mdef->mhpmax -= drain; 1140. 			   mdef->m_lev--; 1141. 			   drain /= 2; 1142. 			   if (drain) healup(drain, 0, FALSE, FALSE); 1143. 			} 1144. 			return vis; 1145. 		} else { /* youdefend */ 1146. 			int oldhpmax = u.uhpmax; 1147. 1148. 			if (Blind) 1149. 				You_feel("an %s drain your life!", 1150. 				    otmp->oartifact == ART_STORMBRINGER ?  1151. 				    "unholy blade" : "object"); 1152. 			else if (otmp->oartifact == ART_STORMBRINGER) 1153. 				pline_The("%s blade drains your life!", 1154. 				      hcolor(NH_BLACK)); 1155. 			else 1156. 				pline("%s drains your life!", 1157. 				      The(distant_name(otmp, xname))); 1158. 			losexp("life drainage"); 1159. 			if (magr && magr->mhp < magr->mhpmax) { 1160. 			   magr->mhp += (oldhpmax - u.uhpmax)/2; 1161. 			   if (magr->mhp > magr->mhpmax) magr->mhp = magr->mhpmax; 1162. 			} 1163. 			return TRUE; 1164. 		} 1165. 	}  1166. 	return FALSE; 1167. } 1168.  1169. static NEARDATA const char recharge_type[] = { ALLOW_COUNT, ALL_CLASSES, 0 }; 1170. static NEARDATA const char invoke_types[] = { ALL_CLASSES, 0 }; 1171. 		/* #invoke: an "ugly check" filters out most objects */ 1172. 1173. int 1174. doinvoke 1175. { 1176.     register struct obj *obj; 1177. 1178.     obj = getobj(invoke_types, "invoke"); 1179.    if (!obj) return 0; 1180.    if (obj->oartifact && !touch_artifact(obj, &youmonst)) return 1; 1181.    return arti_invoke(obj); 1182. } 1183.  1184. STATIC_OVL int 1185. arti_invoke(obj) 1186.    register struct obj *obj; 1187. { 1188.     register const struct artifact *oart = get_artifact(obj); 1189. 1190.     if(!oart || !oart->inv_prop) { 1191. 	if(obj->otyp == CRYSTAL_BALL) 1192. 	   use_crystal_ball(obj); 1193. 	else 1194. 	   pline(nothing_happens); 1195. 	return 1; 1196.    }  1197.  1198.     if(oart->inv_prop > LAST_PROP) { 1199. 	/* It's a special power, not "just" a property */ 1200. 	if(obj->age > monstermoves) { 1201. 	   /* the artifact is tired :-) */  1202. 	    You_feel("that %s %s ignoring you.", 1203. 		    the(xname(obj)), otense(obj, "are"));  1204. 	    /* and just got more so; patience is essential... */  1205. 	    obj->age += (long) d(3,10);  1206. 	    return 1;  1207. 	}  1208. 	obj->age = monstermoves + rnz(100);  1209.  1210. 	switch(oart->inv_prop) {  1211. 	case TAMING: {  1212. 	    struct obj pseudo;  1213.  1214. 	    pseudo = zeroobj;	/* neither cursed nor blessed */  1215. 	    pseudo.otyp = SCR_TAMING;  1216. 	    (void) seffects(&pseudo);  1217. 	    break;  1218. 	  }  1219. 	case HEALING: {  1220. 	    int healamt = (u.uhpmax + 1 - u.uhp) / 2;  1221. 	    long creamed = (long)u.ucreamed;  1222.  1223. 	    if (Upolyd) healamt = (u.mhmax + 1 - u.mh) / 2;  1224. 	    if (healamt || Sick || Slimed || Blinded > creamed)  1225. 		You_feel("better.");  1226. 	    else  1227. 		goto nothing_special;  1228. 	    if (healamt > 0) {  1229. 		if (Upolyd) u.mh += healamt; 1230. 		else u.uhp += healamt; 1231. 	   }  1232. 	    if(Sick) make_sick(0L,(char *)0,FALSE,SICK_ALL); 1233. 	   if(Slimed) Slimed = 0L; 1234. 	   if (Blinded > creamed) make_blinded(creamed, FALSE); 1235. 	   flags.botl = 1; 1236. 	   break; 1237. 	 }  1238. 	case ENERGY_BOOST: { 1239. 	   int epboost = (u.uenmax + 1 - u.uen) / 2; 1240. 	   if (epboost > 120) epboost = 120;		/* arbitrary */ 1241. 	   else if (epboost < 12) epboost = u.uenmax - u.uen; 1242. 	   if(epboost) { 1243. 		You_feel("re-energized."); 1244. 		u.uen += epboost; 1245. 		flags.botl = 1; 1246. 	   } else 1247. 		goto nothing_special; 1248. 	   break; 1249. 	 }  1250. 	case UNTRAP: { 1251. 	   if(!untrap(TRUE)) { 1252. 		obj->age = 0; /* don't charge for changing their mind */ 1253. 		return 0; 1254. 	   }  1255. 	    break; 1256. 	 }  1257. 	case CHARGE_OBJ: { 1258. 	   struct obj *otmp = getobj(recharge_type, "charge"); 1259. 	   boolean b_effect; 1260. 1261. 	    if (!otmp) { 1262. 		obj->age = 0; 1263. 		return 0; 1264. 	   }  1265. 	    b_effect = obj->blessed && 1266. 		(Role_switch == oart->role || !oart->role); 1267. 	   recharge(otmp, b_effect ? 1 : obj->cursed ? -1 : 0); 1268. 	   update_inventory; 1269. 	   break; 1270. 	 }  1271. 	case LEV_TELE: 1272. 	   level_tele; 1273. 	   break; 1274. 	case CREATE_PORTAL: { 1275. 	   int i, num_ok_dungeons, last_ok_dungeon = 0; 1276. 	   d_level newlev; 1277. 	   extern int n_dgns; /* from dungeon.c */ 1278. 	   winid tmpwin = create_nhwindow(NHW_MENU); 1279. 	   anything any; 1280. 1281. 	    any.a_void = 0;	/* set all bits to zero */ 1282. 	   start_menu(tmpwin); 1283. 	   /* use index+1 (cant use 0) as identifier */ 1284. 	   for (i = num_ok_dungeons = 0; i < n_dgns; i++) { 1285. 		if (!dungeons[i].dunlev_ureached) continue; 1286. 		any.a_int = i+1; 1287. 		add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE, 1288. 			 dungeons[i].dname, MENU_UNSELECTED); 1289. 		num_ok_dungeons++; 1290. 		last_ok_dungeon = i; 1291. } 1292. 	    end_menu(tmpwin, "Open a portal to which dungeon?"); 1293. 	   if (num_ok_dungeons > 1) { 1294. 		/* more than one entry; display menu for choices */ 1295. 		menu_item *selected; 1296. 		int n; 1297. 1298. 		n = select_menu(tmpwin, PICK_ONE, &selected); 1299. 		if (n <= 0) { 1300. 		   destroy_nhwindow(tmpwin); 1301. 		   goto nothing_special; 1302. 		} 1303. 		i = selected[0].item.a_int - 1; 1304. 		free((genericptr_t)selected); 1305. 	   } else 1306. 		i = last_ok_dungeon;	/* also first & only OK dungeon */ 1307. 	   destroy_nhwindow(tmpwin); 1308. 1309. 	    /*  1310. 	     * i is now index into dungeon structure for the new dungeon. 1311. 	    * Find the closest level in the given dungeon, open 1312. 	    * a use-once portal to that dungeon and go there. 1313. 	    * The closest level is either the entry or dunlev_ureached. 1314. 	    */  1315. 	    newlev.dnum = i;  1316. if(dungeons[i].depth_start >= depth(&u.uz)) 1317. 		newlev.dlevel = dungeons[i].entry_lev; 1318. 	   else 1319. 		newlev.dlevel = dungeons[i].dunlev_ureached; 1320. 	   if(u.uhave.amulet || In_endgame(&u.uz) || In_endgame(&newlev) ||  1321. 	       newlev.dnum == u.uz.dnum) { 1322. 		You_feel("very disoriented for a moment."); 1323. 	   } else { 1324. 		if(!Blind) You("are surrounded by a shimmering sphere!"); 1325. 		else You_feel("weightless for a moment."); 1326. 		goto_level(&newlev, FALSE, FALSE, FALSE); 1327. 	   }  1328. 	    break; 1329. 	 }  1330. 	case ENLIGHTENING: 1331. 	   enlightenment(0); 1332. 	   break; 1333. 	case CREATE_AMMO: { 1334. 	   struct obj *otmp = mksobj(ARROW, TRUE, FALSE); 1335. 1336. 	    if (!otmp) goto nothing_special; 1337. 	   otmp->blessed = obj->blessed; 1338. 	   otmp->cursed = obj->cursed; 1339. 	   otmp->bknown = obj->bknown; 1340. 	   if (obj->blessed) { 1341. 		if (otmp->spe < 0) otmp->spe = 0; 1342. 		otmp->quan += rnd(10); 1343. 	   } else if (obj->cursed) { 1344. 		if (otmp->spe > 0) otmp->spe = 0; 1345. 	   } else 1346. 		otmp->quan += rnd(5); 1347. 	   otmp->owt = weight(otmp); 1348. 	   otmp = hold_another_object(otmp, "Suddenly %s out.",  1349. 				       aobjnam(otmp, "fall"), (const char *)0); 1350. 	   break; 1351. 	 }  1352. 	}  1353.     } else { 1354. 	long eprop = (u.uprops[oart->inv_prop].extrinsic ^= W_ARTI), 1355. 	    iprop = u.uprops[oart->inv_prop].intrinsic; 1356. 	boolean on = (eprop & W_ARTI) != 0; /* true if invoked prop just set */ 1357. 1358. 	if(on && obj->age > monstermoves) { 1359. 	   /* the artifact is tired :-) */  1360. 	    u.uprops[oart->inv_prop].extrinsic ^= W_ARTI;  1361. 	    You_feel("that %s %s ignoring you.", 1362. 		    the(xname(obj)), otense(obj, "are"));  1363. 	    /* can't just keep repeatedly trying */  1364. 	    obj->age += (long) d(3,10);  1365. 	    return 1;  1366. 	} else if(!on) {  1367. 	    /* when turning off property, determine downtime */  1368. 	    /* arbitrary for now until we can tune this -dlc */  1369. 	    obj->age = monstermoves + rnz(100);  1370. 	}  1371.  1372. 	if ((eprop & ~W_ARTI) || iprop) {  1373. nothing_special:  1374. 	    /* you had the property from some other source too */  1375. 	    if (carried(obj))  1376. 		You_feel("a surge of power, but nothing seems to happen.");  1377. 	    return 1;  1378. 	}  1379. 	switch(oart->inv_prop) {  1380. 	case CONFLICT:  1381. 	    if(on) You_feel("like a rabble-rouser.");  1382. 	    else You_feel("the tension decrease around you.");  1383. 	    break;  1384. 	case LEVITATION:  1385. 	    if(on) {  1386. 		float_up; 1387. 		spoteffects(FALSE); 1388. 	   } else (void) float_down(I_SPECIAL|TIMEOUT, W_ARTI); 1389. 	   break; 1390. 	case INVIS: 1391. 	   if (BInvis || Blind) goto nothing_special; 1392. 	   newsym(u.ux, u.uy); 1393. 	   if (on) 1394. 		Your("body takes on a %s transparency...", 1395. 		     Hallucination ? "normal" : "strange"); 1396. 	   else 1397. 		Your("body seems to unfade..."); 1398. 	   break; 1399. 	} 1400.     }  1401.  1402.     return 1; 1403. } 1404.  1405.  1406. /* WAC return TRUE if artifact is always lit */ 1407. boolean 1408. artifact_light(obj) 1409.    struct obj *obj; 1410. { 1411.     return (get_artifact(obj) && obj->oartifact == ART_SUNSWORD); 1412. } 1413.  1414. /* KMH -- Talking artifacts are finally implemented */ 1415. void 1416. arti_speak(obj) 1417.    struct obj *obj; 1418. { 1419. 	register const struct artifact *oart = get_artifact(obj); 1420. 	const char *line; 1421. 	char buf[BUFSZ]; 1422. 1423.  1424. 	/* Is this a speaking artifact? */ 1425. 	if (!oart || !(oart->spfx & SPFX_SPEAK)) 1426. 		return; 1427. 1428. 	line = getrumor(bcsign(obj), buf, TRUE); 1429. 	if (!*line) 1430. 		line = "NetHack rumors file closed for renovation."; 1431. 	pline("%s:", Tobjnam(obj, "whisper")); 1432. 	verbalize("%s", line); 1433. 	return; 1434. } 1435.  1436. boolean 1437. artifact_has_invprop(otmp, inv_prop) 1438. struct obj *otmp; 1439. uchar inv_prop; 1440. { 1441. 	const struct artifact *arti = get_artifact(otmp); 1442. 1443. 	return((boolean)(arti && (arti->inv_prop == inv_prop))); 1444. } 1445.  1446. /* Return the price sold to the hero of a given artifact or unique item */ 1447. long 1448. arti_cost(otmp) 1449. struct obj *otmp; 1450. { 1451. 	if (!otmp->oartifact) 1452. 	   return ((long)objects[otmp->otyp].oc_cost); 1453. 	else if (artilist[(int) otmp->oartifact].cost) 1454. 	   return (artilist[(int) otmp->oartifact].cost); 1455. 	else 1456. 	   return (100L * (long)objects[otmp->otyp].oc_cost); 1457. } 1458.  1459. #endif /* OVLB */ 1460. 1461. /*artifact.c*/