Source:NetHack 2.2a/zap.c

Below is the full text to zap.c from the source code of NetHack 2.2a. To link to a particular line, write [[NetHack 2.2a/zap.c#line123 ]], for example.

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

1.   /*	SCCS Id: @(#)zap.c	2.1	87/11/10 2.   /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */ 3.     4.    #include "hack.h"  5. 6.   extern struct obj *mkobj_at; 7.   extern struct monst *makemon, *mkmon_at, youmonst; 8.   struct monst *bhit; 9.   char *exclam; 10.  #ifdef KAA 11.  extern char *xname; 12.  #endif 13.   14.   char *fl[]= { 15.  	"magic missile", 16.  	"bolt of fire", 17.  	"sleep ray", 18.  	"bolt of cold", 19.  	"death ray", 20.  	"magic missile",	/* Spell equivalents of above wands */ 21.  	"fireball", 22.  	"sleep ray", 23.  	"cone of cold", 24.  	"finger of death" 25.  };  26.    27.   /* Routines for IMMEDIATE wands and spells. */ 28.   /* bhitm: monster mtmp was hit by the effect of wand or spell otmp */ 29.  bhitm(mtmp, otmp) 30.  register struct monst *mtmp; 31.  register struct obj *otmp; 32.  {  33.   	wakeup(mtmp); 34.  	switch(otmp->otyp) { 35.  	case WAN_STRIKING: 36.  #ifdef SPELLS 37.  	case SPE_FORCE_BOLT: 38.  #endif 39.  		if(u.uswallow || rnd(20) < 10+mtmp->data->ac) { 40.  			register int tmp = d(2,12); 41.  			hit((otmp->otyp == WAN_STRIKING) ? "wand" : "spell", mtmp, exclam(tmp)); 42.  			resist(mtmp, otmp->olet, tmp, TELL); 43.  		} else miss((otmp->otyp == WAN_STRIKING) ? "wand" : "spell", mtmp); 44.  		break; 45.  	case WAN_SLOW_MONSTER: 46.  #ifdef SPELLS 47.  	case SPE_SLOW_MONSTER: 48.  #endif 49.  		if(! resist(mtmp, otmp->olet, 0, NOTELL)) 50.  			mtmp->mspeed = MSLOW; 51.  		break; 52.  	case WAN_SPEED_MONSTER: 53.  		if (!resist(mtmp, otmp->olet, 0, NOTELL)) 54.  			mtmp->mspeed = MFAST; 55.  		break; 56.  	case WAN_UNDEAD_TURNING: 57.  #ifdef SPELLS 58.  	case SPE_TURN_UNDEAD: 59.  #endif 60.  		if(index(UNDEAD,mtmp->data->mlet)) { 61.   62.   			if(!resist(mtmp, otmp->olet, rnd(8), NOTELL)) 63.  				mtmp->mflee = 1; 64.  		}  65.   		break; 66.  	case WAN_POLYMORPH: 67.  #ifdef SPELLS 68.  	case SPE_POLYMORPH: 69.  #endif 70.  		if(!resist(mtmp, otmp->olet, 0, NOTELL)) 71.  		    if( newcham(mtmp,&mons[rn2(CMNUM)]) ) 72.  			if (!Hallucination) 73.  			    objects[otmp->otyp].oc_name_known = 1; 74.  		break; 75.  	case WAN_CANCELLATION: 76.  #ifdef SPELLS 77.  	case SPE_CANCELLATION: 78.  #endif 79.  		if(!resist(mtmp, otmp->olet, 0, NOTELL)) 80.  			mtmp->mcan = 1; 81.  		break; 82.  	case WAN_TELEPORTATION: 83.  #ifdef SPELLS 84.  	case SPE_TELEPORT_AWAY: 85.  #endif 86.  		rloc(mtmp); 87.  		break; 88.  	case WAN_MAKE_INVISIBLE: 89.  		mtmp->minvis = 1; 90.  		break; 91.  	case WAN_NOTHING: 92.  		break; 93.  	case WAN_PROBING: 94.  #ifdef PROBING 95.  		mstatusline(mtmp); 96.  #else 97.  		pline("Nothing Happens."); 98.  #endif 99.  		break; 100. 	default: 101. 		impossible("What an interesting effect (%u)", otmp->otyp); 102. 	}  103.  }  104.   105.  bhito(obj, otmp)	/* object obj was hit by the effect of wand otmp */ 106. register struct obj *obj, *otmp;	/* returns TRUE if sth was done */ 107. {  108.  	register int res = TRUE; 109. #ifdef DGKMOD 110. 	struct obj *otmp2; 111. #endif 112.  113.  	if(obj == uball || obj == uchain) 114. 		res = FALSE; 115. 	else 116. 	switch(otmp->otyp) { 117. 	case WAN_POLYMORPH: 118. #ifdef SPELLS 119. 	case SPE_POLYMORPH: 120. #endif 121. 		/* preserve symbol and quantity, but turn rocks into gems */ 122. #ifdef DGKMOD 123. 		otmp2 = mkobj_at((obj->otyp == ROCK 124. 			|| obj->otyp == ENORMOUS_ROCK) ? GEM_SYM : obj->olet,  125.  			obj->ox, obj->oy); 126. 		otmp2->quan = obj->quan; 127. 		/* keep special fields (including charges on wands) */ 128. 		/* The DGK modification doesn't allow polymorphing a weapon 129. 		   with enchantments into another one, and doesn't allow 130. 		   polymorphed rings to have plusses. KAA*/ 131. 		if (index("/)[", otmp2->olet)) otmp2->spe = obj->spe;  132.  	        /* Amulets gets cheap   stewr 870807 */  133.  		if (obj->otyp == AMULET_OF_YENDOR) otmp2->spe = obj->spe;  134.  		/* Wands of wishing max 3 stewr 870808 */  135.  		if ((otmp2->otyp == WAN_WISHING) 136. 		    && (obj->spe > 3)) otmp2->spe = 3;  137.  		otmp2->cursed = otmp->cursed;  138.  		/* update the weight */  139.  		otmp2->owt = weight(otmp2);  140.  #else  141.  		mkobj_at((obj->otyp == ROCK || obj->otyp == ENORMOUS_ROCK) 142. 			? GEM_SYM : obj->olet, 143. 			obj->ox, obj->oy) -> quan = obj->quan;  144.  #endif  145.  		delobj(obj);  146.  		break;  147.  	case WAN_STRIKING:  148.  #ifdef SPELLS  149.  	case SPE_FORCE_BOLT:  150.  #endif  151.  		if(obj->otyp == ENORMOUS_ROCK)  152.  			fracture_rock(obj);  153.  		else  154.  			res = FALSE;  155.  		break;  156.  	case WAN_CANCELLATION:  157.  #ifdef SPELLS  158.  	case SPE_CANCELLATION:  159.  #endif  160.  		if(obj->spe && obj->olet != AMULET_SYM) {  161.  			obj->known = 0;  162.  			obj->spe = (obj->olet == WAND_SYM) ? -1 : 0;  163.  		}  164.  		break;  165.  	case WAN_TELEPORTATION:  166.  #ifdef SPELLS  167.  	case SPE_TELEPORT_AWAY:  168.  #endif  169.  		rloco(obj);  170.  		break;  171.  	case WAN_MAKE_INVISIBLE:  172.  		obj->oinvis = 1;  173.  		break;  174.  	case WAN_UNDEAD_TURNING:  175.  #ifdef SPELLS  176.  	case SPE_TURN_UNDEAD:  177.  #endif  178.  		res = revive(obj); 179. 		break; 180. 	case WAN_SLOW_MONSTER:		/* no effect on objects */ 181. #ifdef SPELLS 182. 	case SPE_SLOW_MONSTER: 183. #endif 184. 	case WAN_SPEED_MONSTER: 185. 	case WAN_NOTHING: 186. 	case WAN_PROBING: 187. 		res = FALSE; 188. 		break; 189. 	default: 190. 		impossible("What an interesting effect (%u)", otmp->otyp); 191. 	}  192.  	return(res); 193. }  194.   195.  /*  196.   * zappable - returns 1 if zap is available, 0 otherwise. 197.  *	      it removes a charge from the wand if zappable. 198.  * added by GAN 11/03/86 199.  */  200.  int 201. zappable(wand) 202. register struct obj *wand; 203. {  204.  	if(wand->spe < 0 || (wand->spe ==0 && rn2(121))) 205. 		return(0); 206. 	else  { 207. 		if(wand->spe == 0) 208. 			pline("You wrest one more spell from the worn-out wand."); 209. 		wand->spe--; 210. 		return(1); 211. 	}  212.  }  213.   214.  /*  215.   * zapnodir - zaps an NODIR wand. 216.  * added by GAN 11/03/86 217.  */  218.  zapnodir(wand) 219. register struct obj *wand; 220. {  221.  	switch(wand->otyp){ 222. 		case WAN_LIGHT: 223. 			litroom(TRUE); 224. 			break; 225. 		case WAN_SECRET_DOOR_DETECTION: 226. 			if(!findit) return; 227. 			break; 228. 		case WAN_CREATE_MONSTER: 229. 			{ register int cnt = 1; 230. 			if(!rn2(23)) cnt += rn2(7) + 1; 231. 			while(cnt--) 232. 			    (void) makemon((struct permonst *) 0, u.ux, u.uy); 233. 			}  234.  			break; 235. 		case WAN_WISHING: 236. 			   237.  			if(u.uluck + rn2(5) < 0) { 238. 				pline("Unfortunately, nothing happens."); 239. 				break; 240. 			}  241.  			makewish; 242. 			break; 243. 	}  244.  	if(!objects[wand->otyp].oc_name_known) { 245. 			objects[wand->otyp].oc_name_known = 1; 246. 			more_experienced(0,10); 247. 	}  248.  }  249.   250.  dozap 251. {  252.  	register struct obj *obj; 253. 	int	damage; 254.  255.  	obj = getobj("/", "zap"); 256. 	if(!obj) return(0); 257. 	  258.  	/* zappable addition done by GAN 11/03/86 */ 259. 	if(!zappable(obj))  { 260. 		pline("Nothing Happens."); 261. 		return(1); 262. 	}  263.  	if(!(objects[obj->otyp].bits & NODIR) && !getdir(1)) { 264. 		pline("The %s glows and fades.",xname(obj)); 265. 		return(1);	/* make him pay for knowing !NODIR */ 266. 	}  267.  #ifdef KAA 268.      if(!u.dx && !u.dy && !u.dz && !(objects[obj->otyp].bits & NODIR)) { 269.  270.  		if((damage = zapyourself(obj))) 271. 			losehp(damage,"self-inflicted injury"); 272. 		return(1); 273.      }  274.  #endif 275. 	weffects(obj); 276. #ifdef HARD 277. 	if (obj->spe < 0) { 278. 	    pline ("The %s glows violently, then turns to dust.", xname(obj)); 279. 	    useup(obj); 280. 	}  281.  #endif 282. 	return(1); 283. }  284.   285.  #ifdef KAA 286. #define	makeknown(x)	objects[x].oc_name_known = 1 287.  288.  zapyourself(obj) 289. 	register struct obj	*obj; 290. {  291.  struct obj	*otmp; 292. int	damage = 0; 293.  294.  	switch(obj->otyp) { 295. 		case WAN_STRIKING: 296. #ifdef SPELLS 297. 		case SPE_FORCE_BOLT: 298. #endif 299. 		    pline("You magically bash yourself!"); 300. 		    damage=d(8,6); 301. 		    break; 302. 		case WAN_FIRE: 303. 		    makeknown(WAN_FIRE); 304. #ifdef SPELLS 305. 		case SPE_FIREBALL: 306. #endif 307. 		    pline("You've set light to yourself!"); 308. 		    if (!Fire_resistance) damage=d(12,6); 309. 		    burn_scrolls; 310. 		    boil_potions; 311. 		    break; 312. 		case WAN_COLD: 313. 		    makeknown(WAN_COLD); 314. #ifdef SPELLS 315. 		case SPE_CONE_OF_COLD: 316. #endif 317. 		    pline("You imitate a popsicle!"); 318. 		    if (!Cold_resistance) damage=d(12,6); 319. 		    break; 320. 		case WAN_MAGIC_MISSILE: 321. 		    makeknown(WAN_MAGIC_MISSILE); 322. #ifdef SPELLS 323. 		case SPE_MAGIC_MISSILE: 324. #endif 325. 		    damage = d(4,6); 326. 		    pline("Idiot!  You've shot yourself!"); 327. 		    break; 328. 		case WAN_POLYMORPH: 329. 		    makeknown(WAN_POLYMORPH); 330. #ifdef SPELLS 331. 		case SPE_POLYMORPH: 332. #endif 333. 		    polyself; 334. 		    break; 335. 		case WAN_CANCELLATION: 336. #ifdef SPELLS 337. 		case SPE_CANCELLATION: 338. #endif 339. 		    for(otmp = invent; otmp; otmp = otmp->nobj) 340. 		       if(otmp != uball && otmp->otyp != AMULET_OF_YENDOR) 341. 			    otmp->spe = (obj->olet == WAND_SYM) ? -1 : 0; 342.  		    if(u.mtimedone) rehumanize; 343. 		    flags.botl = 1;  /* because of potential AC change */ 344. 		    find_ac; 345. 		    break; 346. 	       case WAN_MAKE_INVISIBLE: 347. 		    HInvis |= INTRINSIC; 348. 		    /* Tough luck if you cannot see invisible! */ 349.  		    if (!See_invisible) newsym(u.ux, u.uy); 350. 		    break; 351. 	       case WAN_SPEED_MONSTER: 352. 		    Fast |= INTRINSIC; 353. 		    break; 354. 	       case WAN_SLEEP: 355. 		    makeknown(WAN_SLEEP); 356. #ifdef SPELLS 357. 		case SPE_SLEEP: 358. #endif 359. 		    pline("The sleep ray hits you!"); 360. 		    nomul(-rn2(50)); 361. 		    break; 362. 		case WAN_SLOW_MONSTER: 363. #ifdef SPELLS 364. 		case SPE_SLOW_MONSTER: 365. #endif 366. 		    Fast = 0; 367. 		    break; 368. 		case WAN_TELEPORTATION: 369. #ifdef SPELLS 370. 		case SPE_TELEPORT_AWAY: 371. #endif 372. 		    tele; 373. 		    break; 374. 		case WAN_DEATH: 375. #ifdef SPELLS 376. 		case SPE_FINGER_OF_DEATH: 377. #endif 378. 		    killer = "death ray"; 379. 		    pline("You irradiate yourself with pure energy!"); 380. 		    pline("You die."); 381. 		    done("died"); 382. 		    break; 383. #ifdef SPELLS 384. 		case SPE_LIGHT: 385. 		    pline("You've blinded yourself!"); 386. 		    Blinded += rnd(100); 387. 		    break; 388. 		case SPE_DIG: 389. 		case SPE_TURN_UNDEAD: 390. 		case SPE_DETECT_UNSEEN: 391. #endif 392. 	       case WAN_PROBING: 393. #ifdef PROBING 394. 		    ustatusline; 395. #else 396. 		    pline("Nothing happens."); 397. #endif 398. 		    break; 399. 		case WAN_DIGGING: 400. 		case WAN_UNDEAD_TURNING: 401. 		case WAN_NOTHING: 402. 		    break; 403. 		default: impossible("object %d used?",obj->otyp); 404. 	}  405.  	return(damage); 406. }  407.  #endif /* KAA /**/ 408.  409.  /* called for various wand and spell effects - M. Stephenson */ 410. weffects(obj) 411. 	register struct	obj	*obj; 412. {  413.  	xchar zx,zy; 414.  415.  	if(objects[obj->otyp].bits & IMMEDIATE) { 416. 		if(u.uswallow) 417. 			bhitm(u.ustuck, obj); 418. 		else if(u.dz) { 419. 			if(u.dz > 0 && o_at(u.ux,u.uy)) { 420. 				register struct obj *otmp; 421. 				  422.  				/* changed by GAN to hit all objects there */ 423. 				for(otmp = fobj; otmp ; otmp = otmp->nobj) 424. 					if(otmp->ox == u.ux &&  425.  					   otmp->oy == u.uy) 426. 						(void) bhito(otmp, obj); 427. 			}  428.  		} else 429. 			(void) bhit(u.dx,u.dy,rn1(8,6),0,bhitm,bhito,obj); 430. 	} else { 431. 	    switch(obj->otyp){ 432. 		case WAN_LIGHT: 433. #ifdef SPELLS 434. 		case SPE_LIGHT: 435. #endif 436. 			litroom(TRUE); 437. 			break; 438. 		case WAN_SECRET_DOOR_DETECTION: 439. #ifdef SPELLS 440. 		case SPE_DETECT_UNSEEN: 441. #endif 442. 			if(!findit) return; 443. 			break; 444. 		case WAN_CREATE_MONSTER: 445. 			{ register int cnt = 1; 446. 			if(!rn2(23)) cnt += rn2(7) + 1; 447. 			while(cnt--) 448. 			    (void) makemon((struct permonst *) 0, u.ux, u.uy); 449. 			}  450.  			break; 451. 		case WAN_WISHING: 452. 			if(u.uluck + rn2(5) < 0) { 453. 			    pline("Unfortunately, nothing happens."); 454. 			    break; 455. 			}  456.  			makewish; 457. 			break; 458. 		case WAN_DIGGING: 459. #ifdef SPELLS 460. 		case SPE_DIG: 461. #endif 462. 			/* Original effect (approximately): 463. 			 * from CORR: dig until we pierce a wall 464. 			 * from ROOM: piece wall and dig until we reach 465. 			 * an ACCESSIBLE place. 466. 			 * Currently: dig for digdepth positions; 467. 			 * also down on request of Lennart Augustsson. 468. 			 */  469.  			{ register struct rm *room; 470. 			  register int digdepth; 471. 			if(u.uswallow) { 472. 				register struct monst *mtmp = u.ustuck; 473.  474.  				pline("You pierce %s's stomach wall!",  475.  					monnam(mtmp)); 476. 				mtmp->mhp = 1;	/* almost dead */ 477. 				unstuck(mtmp); 478. 				mnexto(mtmp); 479. 				break; 480. 			}  481.  			if(u.dz) { 482. 			    if(u.dz < 0) { 483. 				pline("You loosen a rock from the ceiling."); 484. 				pline("It falls on your head!"); 485. 				losehp(1, "falling rock"); 486. 				mksobj_at(ROCK, u.ux, u.uy); 487. 				fobj->quan = 1; 488. 				stackobj(fobj); 489. 				if(Invisible) newsym(u.ux, u.uy); 490. 			    } else { 491. 				dighole; 492. 			    }  493.  			    break; 494. 			}  495.  			zx = u.ux+u.dx; 496. 			zy = u.uy+u.dy; 497. 			digdepth = 8 + rn2(18); 498. 			Tmp_at(-1, '*');	/* open call */ 499. 			while(--digdepth >= 0) { 500. 				if(!isok(zx,zy)) break; 501. 				room = &levl[zx][zy]; 502. 				Tmp_at(zx,zy); 503. 				if(!xdnstair){ 504. 					if(zx < 3 || zx > COLNO-3 ||  505.  					    zy < 3 || zy > ROWNO-3) 506. 						break; 507. 					if(room->typ == HWALL ||  508.  					    room->typ == VWALL){ 509. 						room->typ = ROOM; 510. 						break; 511. 					}  512.  				} else 513. 				if(room->typ == HWALL || room->typ == VWALL ||  514.  				   room->typ == SDOOR || room->typ == LDOOR){ 515. 					room->typ = DOOR; 516. 					digdepth -= 2; 517. 				} else 518. 				if(room->typ == SCORR || !room->typ) { 519. 					room->typ = CORR; 520. 					digdepth--; 521. 				}  522.  				mnewsym(zx,zy); 523. 				zx += u.dx; 524. 				zy += u.dy; 525. 			}  526.  			mnewsym(zx,zy);	/* not always necessary */ 527. 			Tmp_at(-1,-1);	/* closing call */ 528. 			break; 529. 			}  530.  		default: 531. #ifdef SPELLS 532. 			if((int) obj->otyp >= SPE_MAGIC_MISSILE) { 533.  534.  				buzz((int) obj->otyp - SPE_MAGIC_MISSILE + 5,  535.  					u.ux, u.uy, u.dx, u.dy); 536. 			} else 537. #endif 538.  539.  				buzz((int) obj->otyp - WAN_MAGIC_MISSILE,  540.  					u.ux, u.uy, u.dx, u.dy); 541. 			break; 542. 		}  543.  		if(!objects[obj->otyp].oc_name_known) { 544. 			objects[obj->otyp].oc_name_known = 1; 545. 			more_experienced(0,10); 546. 		}  547.  	}  548.  	return; 549. }  550.   551.  char * 552. exclam(force) 553. register int force; 554. {  555.  	/* force == 0 occurs e.g. with sleep ray */ 556. 	/* note that large force is usual with wands so that !! would 557. 		require information about hand/weapon/wand */ 558. 	return( (force < 0) ? "?" : (force <= 4) ? "." : "!" ); 559. }  560.   561.  hit(str,mtmp,force) 562. register char *str; 563. register struct monst *mtmp; 564. register char *force;		/* usually either "." or "!" */ 565.  {  566.  	if(!cansee(mtmp->mx,mtmp->my)) pline("The %s hits it.", str); 567. 	else pline("The %s hits %s%s", str, monnam(mtmp), force); 568. }  569.   570.  miss(str,mtmp) 571. register char *str; 572. register struct monst *mtmp; 573. {  574.  	if(!cansee(mtmp->mx,mtmp->my)) pline("The %s misses it.",str); 575. 	else pline("The %s misses %s.",str,monnam(mtmp)); 576. }  577.   578.  /* bhit: called when a weapon is thrown (sym = obj->olet) or when an  579. IMMEDIATE wand is zapped (sym = 0); the weapon falls down at end of 580. range or when a monster is hit; the monster is returned, and bhitpos 581.    is set to the final position of the weapon thrown; the ray of a wand 582.    may affect several objects and monsters on its path - for each of  583. these an argument function is called. */ 584.  /* check !u.uswallow before calling bhit */ 585.  586.  struct monst * 587. bhit(ddx,ddy,range,sym,fhitm,fhito,obj) 588. register int ddx,ddy,range;		/* direction and range */ 589. char sym;				/* symbol displayed on path */ 590. int (*fhitm), (*fhito);		/* fns called when mon/obj hit */ 591. struct obj *obj;			/* 2nd arg to fhitm/fhito */ 592. {  593.  	register struct monst *mtmp; 594. 	register struct obj *otmp; 595. 	register int typ; 596.  597.  	bhitpos.x = u.ux; 598. 	bhitpos.y = u.uy; 599.  600.  	if(sym) tmp_at(-1, sym);	/* open call */ 601. 	while(range-- > 0) { 602. 		bhitpos.x += ddx; 603. 		bhitpos.y += ddy; 604. 		typ = levl[bhitpos.x][bhitpos.y].typ; 605. 		if(mtmp = m_at(bhitpos.x,bhitpos.y)){ 606. 			if(sym) { 607. 				tmp_at(-1, -1);	/* close call */ 608. 				return(mtmp); 609. 			}  610.  			(*fhitm)(mtmp, obj); 611. 			range -= 3; 612. 		}  613.  		/* modified by GAN to hit all objects */ 614. 		if(fhito && o_at(bhitpos.x,bhitpos.y)){ 615. 			int hitanything = 0; 616. 			for(otmp = fobj; otmp; otmp = otmp->nobj) 617. 				if(otmp->ox == bhitpos.x &&  618.  				   otmp->oy == bhitpos.y)  619. hitanything += (*fhito)(otmp, obj); 620. 			if(hitanything)	range--; 621. 		}  622.  		if(!ZAP_POS(typ)) { 623. 			bhitpos.x -= ddx; 624. 			bhitpos.y -= ddy; 625. 			break; 626. 		}  627.  		if(sym) tmp_at(bhitpos.x, bhitpos.y); 628. 	}  629.   630.  	/* leave last symbol unless in a pool */ 631. 	if(sym) 632. 	   tmp_at(-1, (levl[bhitpos.x][bhitpos.y].typ == POOL) ? -1 : 0); 633. 	return(0); 634. }  635.   636.  struct monst * 637. boomhit(dx,dy) { 638. 	register int i, ct; 639. 	register struct monst *mtmp; 640. 	char sym = ')';  641.  	extern schar xdir[], ydir[];  642.   643.  	bhitpos.x = u.ux;  644.  	bhitpos.y = u.uy;  645.   646.  	for(i=0; i<8; i++) if(xdir[i] == dx && ydir[i] == dy) break;  647.  	tmp_at(-1, sym);	/* open call */  648.  	for(ct=0; ct<10; ct++) {  649.  		if(i == 8) i = 0;  650.  		sym = ')' + '(' - sym;  651.  		tmp_at(-2, sym);	/* change let call */  652.  		dx = xdir[i];  653.  		dy = ydir[i];  654.  		bhitpos.x += dx;  655.  		bhitpos.y += dy;  656.  		if(mtmp = m_at(bhitpos.x, bhitpos.y)){  657.  			tmp_at(-1,-1);  658.  			return(mtmp);  659.  		}  660.  		if(!ZAP_POS(levl[bhitpos.x][bhitpos.y].typ)) {  661.  			bhitpos.x -= dx;  662.  			bhitpos.y -= dy;  663.  			break;  664.  		}  665.  		if(bhitpos.x == u.ux && bhitpos.y == u.uy) { /* ct == 9 */  666.  			if(rn2(20) >= 10+u.ulevel){	/* we hit ourselves */  667.  				(void) thitu(10, rnd(10), "boomerang"); 668. 				break; 669. 			} else {	/* we catch it */ 670. 				tmp_at(-1,-1); 671. 				pline("Skillfully, you catch the boomerang."); 672. 				return(&youmonst); 673. 			}  674.  		}  675.  		tmp_at(bhitpos.x, bhitpos.y); 676. 		if(ct % 5 != 0) i++; 677. 	}  678.  	tmp_at(-1, -1);	/* do not leave last symbol */ 679. 	return(0); 680. }  681.   682.  uchar 683. dirlet(dx,dy) register dx,dy; { 684. 	return 685. 		(dx == dy) ? '\\' : (dx && dy) ? '/' : dx ? HWALL_SYM : VWALL_SYM; 686. }  687.   688.  /* type == -1: monster spitting fire at you */ 689. /* type == -1,-2,-3: bolts sent out by wizard */ 690. /* called with dx = dy = 0 with vertical bolts */ 691. buzz(type,sx,sy,dx,dy) 692. register int type; 693. register xchar sx,sy; 694. register int dx,dy; 695. {  696.  	int abstype = (type == 10) ? 1 : abs(type); 697. 	register char *fltxt = (type == -1 || type == 10) ? "blaze of fire" : fl[abstype]; 698. 	struct rm *lev; 699. 	xchar range; 700. 	struct monst *mon; 701.  702.  	if(u.uswallow) { 703. 		register int tmp; 704.  705.  		if(type < 0) return; 706. 		tmp = zhit(u.ustuck, type); 707. 		if(!u.ustuck)	u.uswallow = 0; 708. 		else	pline("The %s rips into %s%s",  709.  				fltxt, monnam(u.ustuck), exclam(tmp)); 710. 		return; 711. 	}  712.  	if(type < 0) pru; 713. 	range = rn1(7,7); 714. 	Tmp_at(-1, dirlet(dx,dy));	/* open call */ 715. 	while(range-- > 0) { 716. 		sx += dx; 717. 		sy += dy; 718. 		if((lev = &levl[sx][sy])->typ) Tmp_at(sx,sy); 719. 		else { 720. 			int bounce = 0; 721. 			if(cansee(sx-dx,sy-dy)) 722. 				pline("The %s bounces!", fltxt); 723. 			if(ZAP_POS(levl[sx][sy-dy].typ)) 724. 				bounce = 1; 725. 			if(ZAP_POS(levl[sx-dx][sy].typ)) { 726. 				if(!bounce || rn2(2)) bounce = 2; 727. 			}  728.  			switch(bounce){ 729. 			case 0: 730. 				dx = -dx; 731. 				dy = -dy; 732. 				continue; 733. 			case 1: 734. 				dy = -dy; 735. 				sx -= dx; 736. 				break; 737. 			case 2: 738. 				dx = -dx; 739. 				sy -= dy; 740. 				break; 741. 			}  742.  			Tmp_at(-2,dirlet(dx,dy)); 743. 			continue; 744. 		}  745.  		if(lev->typ == POOL && abstype == 1 /* fire */) { 746. 			range -= 3; 747. 			lev->typ = ROOM; 748. 			if(cansee(sx,sy)) { 749. 				mnewsym(sx,sy); 750. 				pline("The water evaporates."); 751. 			} else 752. 				pline("You hear a hissing sound."); 753. 		}  754.  		if(o_at(sx,sy) && abstype == 1) 755. 			if(burn_floor_scrolls(sx,sy) && cansee(sx,sy))  { 756. 				mnewsym(sx,sy); 757. 				pline("You see a puff of smoke."); 758. 			}  759.  		if((mon = m_at(sx,sy)) &&  760.  		   (type != -1 || mon->data->mlet != 'D')) { 761. 			wakeup(mon); 762. 			if(rnd(20) < 18 + mon->data->ac) { 763. 				register int tmp = zhit(mon,abstype); 764. 				if(mon->mhp < 1) { 765. 					if(type < 0) { 766. 					    if(cansee(mon->mx,mon->my)) 767. 					      pline("%s is killed by the %s!",  768.  						Monnam(mon), fltxt); 769. 					    mondied(mon); 770. 					} else 771. 					    killed(mon); 772. 				} else 773. 					hit(fltxt, mon, exclam(tmp)); 774. 				range -= 2; 775. 			} else 776. 				miss(fltxt,mon); 777. 		} else if(sx == u.ux && sy == u.uy) { 778. 			nomul(0); 779. 			if(rnd(20) < 18+u.uac) { 780. 				register int dam = 0; 781. 				range -= 2; 782. 				pline("The %s hits you!",fltxt); 783. 				switch(abstype) { 784. 				case 0: 785. 				case 5:	dam = d(2,6); 786. 					break; 787. 				case 1: 788. 				case 6:	if(Fire_resistance) 789. 						pline("You don't feel hot!"); 790. 					else dam = d(6,6); 791. 					if(!rn2(3)) { 792. 						boil_potions; 793. 						burn_scrolls; 794. 					}  795.  					break; 796. 				case 2: 797. 				case 7:	nomul(-rnd(25)); /* sleep ray */ 798. 					break; 799. 				case 3: 800. 				case 8:	if(Cold_resistance) 801. 						pline("You don't feel cold!"); 802. 					else dam = d(6,6); 803. 					break; 804. 				case 4: 805. 				case 9:	u.uhp = -1; 806. 					break; 807. 				}  808.  				losehp(dam,fltxt); 809. 			} else pline("The %s whizzes by you!",fltxt); 810. 			stop_occupation; 811. 		}  812.  		if(!ZAP_POS(lev->typ)) { 813. 			int bounce = 0, rmn; 814. 			if(cansee(sx,sy)) pline("The %s bounces!",fltxt); 815. 			range--; 816. 			if(!dx || !dy || !rn2(20)){ 817. 				dx = -dx; 818. 				dy = -dy; 819. 			} else { 820. 			  if(ZAP_POS(rmn = levl[sx][sy-dy].typ) &&  821.  			    (IS_ROOM(rmn) || ZAP_POS(levl[sx+dx][sy-dy].typ))) 822. 				bounce = 1; 823. 			  if(ZAP_POS(rmn = levl[sx-dx][sy].typ) &&  824.  			    (IS_ROOM(rmn) || ZAP_POS(levl[sx-dx][sy+dy].typ))) 825. 				if(!bounce || rn2(2)) 826. 					bounce = 2; 827.  828.  			  switch(bounce){ 829. 			  case 0: 830. 				dy = -dy; 831. 				dx = -dx; 832. 				break; 833. 			  case 1: 834. 				dy = -dy; 835. 				break; 836. 			  case 2: 837. 				dx = -dx; 838. 				break; 839. 			  }  840.  			  Tmp_at(-2, dirlet(dx,dy)); 841. 			}  842.  		}  843.  	}  844.  	Tmp_at(-1,-1); 845. }  846.   847.  zhit(mon,type)			/* returns damage to mon */ 848. register struct monst *mon; 849. register type; 850. {  851.  	register int tmp = 0; 852.  853.  	switch(type) { 854. 	case 0:			/* magic missile */ 855. 	case 5: tmp = d(2,6); 856. 		break; 857. 	case -1:		/* Dragon blazing fire */ 858. 	case 1:			/* fire wand*/ 859. 	case 6:			/* fire spell */ 860. 	case 10:		/* Polymorphed human blazing fire */ 861. 		if(index("Dg", mon->data->mlet)) break; 862. 		tmp = d(6,6); 863. 		if(index("YF", mon->data->mlet)) tmp += 7; 864. 		break; 865. 	case 2:			/* sleep*/ 866. 	case 7: tmp = 0; 867. 		if(!resist(mon, (type == 2) ? '/' : '+', 0, NOTELL)) 868. 			mon->mfroz = 1; 869. 		break; 870. 	case 3:			/* cold */ 871. 	case 8: 872. 		if(index("YFgf", mon->data->mlet)) break; 873. 		tmp = d(6,6); 874. 		if(mon->data->mlet == 'D') tmp += 7; 875. 		break; 876. 	case 4:			/* death*/ 877. 	case 9: 878. 		if(index(UNDEAD, mon->data->mlet)) break; 879. 		tmp = mon->mhp+1; 880. 		break; 881. 	}  882.  	if (resist(mon, (type < 5) ? '/' : '+', 0, NOTELL)) tmp /= 2; 883. 	mon->mhp -= tmp; 884. 	return(tmp); 885. }  886.   887.  #define	CORPSE_I_TO_C(otyp)	(char) ((otyp >= DEAD_ACID_BLOB)\  888.  		     ?  'a' + (otyp - DEAD_ACID_BLOB)\  889.  		     :	'@' + (otyp - DEAD_HUMAN)) 890. revive(obj) 891. register struct obj *obj; 892. {  893.  	register struct monst *mtmp; 894. 	register int let; 895.  896.  	if(obj->olet == FOOD_SYM && obj->otyp > CORPSE) { 897. #ifdef KAA 898. 		switch (obj->otyp) { 899. 			case DEAD_HUMAN: { let = 'Z'; break; } 900. 			case DEAD_GIANT: { let = '9'; break; } 901. 			case DEAD_DEMON: { let = '&'; break; } 902. 			default: let = CORPSE_I_TO_C(obj->otyp); 903. 		}  904.  		delobj(obj); 905. /* Originally there was a bug which caused the object not to be erased 906.    from the screen. This happened because first the monster got created, 907.    then the corpse removed. Although delobj called unpobj, the object 908.    didn't get erased from the screen because the monster was sitting on top 909.    of it. Solution: place the delobj call before the mkmon call. */ 910.  		mtmp = mkmon_at(let, obj->ox, obj->oy); 911. 		if (mtmp && obj->otyp == DEAD_HUMAN) { 912. 			mtmp->mhp = mtmp->mhpmax = 100; 913. 			mtmp->mspeed = MFAST; 914. 		}  915.  #endif 916. 		/* do not (yet) revive shopkeepers */ 917. 		/* Note: this might conceivably produce two monsters 918. 			at the same position - strange, but harmless */ 919. #ifndef KAA 920. 		delobj(obj); 921. 		mtmp = mkmon_at(CORPSE_I_TO_C(obj->otyp),obj->ox,obj->oy); 922. #endif 923. 	}  924.  	return(!!mtmp);		/* TRUE if some monster created */ 925. }  926.   927.  rloco(obj) 928. register struct obj *obj; 929. {  930.  	register tx,ty,otx,oty; 931.  932.  	otx = obj->ox; 933. 	oty = obj->oy; 934. 	do { 935. 		tx = rn1(COLNO-3,2); 936. 		ty = rn2(ROWNO); 937. 	} while(!goodpos(tx,ty)); 938. 	obj->ox = tx; 939. 	obj->oy = ty; 940. 	if(cansee(otx,oty)) 941. 		newsym(otx,oty); 942. }  943.   944.  fracture_rock(obj)	/* fractured by pick-axe or wand of striking */ 945. register struct obj *obj;			   /* no texts here! */ 946.  {  947.  	/* unpobj(obj); */ 948. 	obj->otyp = ROCK; 949. 	obj->quan = 7 + rn2(60); 950. 	obj->owt = weight(obj); 951. 	obj->olet = WEAPON_SYM; 952. 	if(cansee(obj->ox,obj->oy)) 953. 		prl(obj->ox,obj->oy); 954. }  955.   956.  boil_potions 957. {  958.  	register struct obj *obj, *obj2; 959. 	register int scrquan, i;  960. 961. 	for(obj = invent; obj; obj = obj2) { 962. 		obj2 = obj->nobj; 963. 		if(obj->olet == POTION_SYM) { 964. 			scrquan = obj->quan; 965. 			for(i = 1; i <= scrquan; i++) 966. 				if(!rn2(3)) { 967. 					pline("%s %s boils and explodes!",  968.  					(obj->quan != 1) ? "One of your" : "Your",  969.  					xname(obj)); 970. 					potionbreathe(obj); 971. 					useup(obj); 972. 					losehp(rn2(4),"boiling potion"); 973. 				}  974.  		}  975.  	}  976.  }  977.  				  978.  burn_scrolls 979. {  980.  	register struct obj *obj, *obj2; 981. 	register int cnt = 0; 982. 	register int scrquan, i;  983. 984. 	for(obj = invent; obj; obj = obj2) { 985. 		obj2 = obj->nobj; 986. 		if(obj->olet == SCROLL_SYM) { 987. 			scrquan = obj->quan; 988. 			for(i = 1; i <= scrquan ; i++) 989. 				if(!rn2(3))  { 990. 					cnt++; 991. 					useup(obj); 992. 				}  993.  		}  994.  	}  995.   996.  	/* "Killed by a burning scrolls" doesn't make too much sense. KAA*/ 997. 	if (cnt) { 998. 		pline("%s of your scrolls catch%s fire!",  999.  		cnt==1 ? "One" : "Some", cnt==1 ? "es" : ""); 1000. 		if(Fire_resistance) 1001. 			pline("You aren't hurt!"); 1002. 		else 1003. 			losehp(cnt,"burning scroll"); 1004. 	} 1005. }  1006.  1007. resist(mtmp, olet, damage, tell) 1008. register struct monst	*mtmp; 1009. register char	olet; 1010. register int	damage, tell; 1011. { 1012. register int	resisted = 0; 1013. #ifdef HARD 1014. register int	level; 1015. 1016. 	switch(olet)  { 1017. 1018. 	    case '/':	level = 8; 1019. 			break; 1020. 1021. 	    case '?':	level = 6; 1022. 			break; 1023. 1024. 	    case '!':	level = 5; 1025. 			break; 1026. 1027. 	    default:	level = u.ulevel; 1028. 			break; 1029. 	} 1030.  1031. 	resisted = (rn2(100) - mtmp->data->mlevel + level) < mtmp->data->mr; 1032. 	if(resisted) { 1033. 1034. 		if(tell) pline("The %s resists!", mtmp->data->mname); 1035. 		mtmp->mhp -= damage/2; 1036. 	} else 1037. #endif 1038. 		mtmp->mhp -= damage; 1039. 1040. 	if(mtmp->mhp < 1) killed(mtmp); 1041. 	return(resisted); 1042. } 1043.  1044. /*  1045.  * burn scrolls on floor at position x,y 1046. * return the number of scrolls burned 1047. */  1048. int 1049. burn_floor_scrolls(x,y) 1050. { 1051. 	register struct obj *obj, *obj2; 1052. 	register int scrquan, i; 1053. register int cnt = 0; 1054. 1055. 	for(obj = fobj; obj; obj = obj2) { 1056. 		obj2 = obj->nobj; 1057. 		/* Bug fix - KAA */ 1058. 		if(obj->ox == x && obj->oy == y && obj->olet == SCROLL_SYM) { 1059. 			scrquan = obj->quan; 1060. 			for(i = 1; i <= scrquan ; i++) 1061. 				if(!rn2(3)) { 1062. 					cnt++; 1063. 					useupf(obj); 1064. 				} 1065. 		}  1066. 	}  1067. 	return(cnt); 1068. } 1069.  1070. makewish	/* Separated as there are now 3 places you can wish at. */ 1071. {  1072. 	char buf[BUFSZ]; 1073. 	register struct obj *otmp; 1074. 	extern struct obj *readobjnam, *addinv; 1075. 	int wishquan, mergquan; 1076. 1077. 	pline("You may wish for an object. What do you want? "); 1078. 	getlin(buf); 1079. 	if(buf[0] == '\033') buf[0] = 0; 1080. 	otmp = readobjnam(buf); 1081. #ifdef KAA 1082. /* Wishing for gold has been implemented in readobjnam and returns 0 1083.   if successful. */ 1084. 	if (otmp) { 1085. #endif 1086. 		wishquan = otmp->quan; 1087. 		otmp = addinv(otmp); 1088. 		/* indented lines added below so quantity shows 1089. 		 * right. GAN - 11/13/86 1090. 		 */ 1091. 		  mergquan = otmp->quan; 1092. 		 otmp->quan = wishquan; /* to fool prinv */ 1093. 		prinv(otmp); 1094. 		 otmp->quan = mergquan; 1095. #ifdef KAA 1096. 	} 1097. #endif 1098. }