Source:Dog.c

Below is the full text to src/dog.c from NetHack 3.4.3. To link to a particular line, write [[dog.c#line123 ]], for example. 1.   /*	SCCS Id: @(#)dog.c	3.4	2002/09/08	*/ 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 "edog.h"  7. 8.   #ifdef OVLB 9.    10.   STATIC_DCL int NDECL(pet_type); 11.   12.   void 13.  initedog(mtmp) 14.  register struct monst *mtmp; 15.  {  16.   	mtmp->mtame = is_domestic(mtmp->data) ? 10 : 5; 17.   	mtmp->mpeaceful = 1; 18.  	mtmp->mavenge = 0; 19.  	set_malign(mtmp); /* recalc alignment now that it's tamed */ 20.  	mtmp->mleashed = 0; 21.  	mtmp->meating = 0; 22.  	EDOG(mtmp)->droptime = 0; 23.  	EDOG(mtmp)->dropdist = 10000; 24.  	EDOG(mtmp)->apport = 10; 25.  	EDOG(mtmp)->whistletime = 0; 26.  	EDOG(mtmp)->hungrytime = 1000 + monstermoves; 27.  	EDOG(mtmp)->ogoal.x = -1;	/* force error if used before set */ 28.  	EDOG(mtmp)->ogoal.y = -1; 29.  	EDOG(mtmp)->abuse = 0; 30.  	EDOG(mtmp)->revivals = 0; 31.  	EDOG(mtmp)->mhpmax_penalty = 0; 32.  	EDOG(mtmp)->killed_by_u = 0; 33.  }  34.    35.   STATIC_OVL int 36.  pet_type 37.  {  38.   	if (urole.petnum != NON_PM) 39.  	    return (urole.petnum); 40.  	else if (preferred_pet == 'c') 41.  	    return (PM_KITTEN); 42.  	else if (preferred_pet == 'd') 43.  	    return (PM_LITTLE_DOG); 44.  	else 45.  	    return (rn2(2) ? PM_KITTEN : PM_LITTLE_DOG); 46.  }  47.    48.   struct monst * 49.  make_familiar(otmp,x,y,quietly) 50.  register struct obj *otmp; 51.  xchar x, y;  52. boolean quietly; 53.  {  54.   	struct permonst *pm; 55.  	struct monst *mtmp = 0; 56.  	int chance, trycnt = 100; 57.   58.   	do { 59.  	    if (otmp) {	/* figurine; otherwise spell */ 60.  		int mndx = otmp->corpsenm; 61.  		pm = &mons[mndx]; 62.  		/* activating a figurine provides one way to exceed the 63.  		   maximum number of the target critter created--unless 64.  		   it has a special limit (erinys, Nazgul) */ 65.  		if ((mvitals[mndx].mvflags & G_EXTINCT) &&  66.   			mbirth_limit(mndx) != MAXMONNO) { 67.  		    if (!quietly) 68.  			/* have just been given "You  69.   			   the figurine and it transforms." message */ 70.  			pline("... into a pile of dust."); 71.  		    break;	/* mtmp is null */ 72.  		}  73.   	    } else if (!rn2(3)) { 74.  		pm = &mons[pet_type]; 75.  	    } else { 76.  		pm = rndmonst; 77.  		if (!pm) { 78.  		  if (!quietly) 79.  		    There("seems to be nothing available for a familiar."); 80.  		  break; 81.  		}  82.   	    }  83.    84.   	    mtmp = makemon(pm, x, y, MM_EDOG|MM_IGNOREWATER); 85.  	    if (otmp && !mtmp) { /* monster was genocided or square occupied */ 86.  	 	if (!quietly) 87.  		   pline_The("figurine writhes and then shatters into pieces!"); 88.  		break; 89.  	    }  90.   	} while (!mtmp && --trycnt > 0); 91.   92.   	if (!mtmp) return (struct monst *)0; 93.   94.   	if (is_pool(mtmp->mx, mtmp->my) && minliquid(mtmp)) 95.  		return (struct monst *)0; 96.   97.   	initedog(mtmp); 98.  	mtmp->msleeping = 0; 99.  	if (otmp) { /* figurine; resulting monster might not become a pet */ 100. 	    chance = rn2(10);	/* 0==tame, 1==peaceful, 2==hostile */ 101. 	    if (chance > 2) chance = otmp->blessed ? 0 : !otmp->cursed ? 1 : 2; 102.  	    /* 0,1,2:  b=80%,10,10; nc=10%,80,10; c=10%,10,80 */ 103. 	    if (chance > 0) { 104. 		mtmp->mtame = 0;	/* not tame after all */ 105. 		if (chance == 2) { /* hostile (cursed figurine) */ 106. 		    if (!quietly) 107. 		       You("get a bad feeling about this."); 108. 		    mtmp->mpeaceful = 0; 109. 		    set_malign(mtmp); 110. 		}  111.  	    }  112.  	    /* if figurine has been named, give same name to the monster */ 113. 	    if (otmp->onamelth) 114. 		mtmp = christen_monst(mtmp, ONAME(otmp)); 115. 	}  116.  	set_malign(mtmp); /* more alignment changes */ 117. 	newsym(mtmp->mx, mtmp->my); 118.  119.  	/* must wield weapon immediately since pets will otherwise drop it */ 120. 	if (mtmp->mtame && attacktype(mtmp->data, AT_WEAP)) { 121. 		mtmp->weapon_check = NEED_HTH_WEAPON; 122. 		(void) mon_wield_item(mtmp); 123. 	}  124.  	return mtmp; 125. }  126.   127.  struct monst * 128. makedog 129. {  130.  	register struct monst *mtmp; 131. #ifdef STEED 132. 	register struct obj *otmp; 133. #endif 134. 	const char *petname; 135. 	int   pettype; 136. 	static int petname_used = 0; 137.  138.  	if (preferred_pet == 'n') return((struct monst *) 0); 139.  140.  	pettype = pet_type; 141. 	if (pettype == PM_LITTLE_DOG) 142. 		petname = dogname; 143. 	else if (pettype == PM_PONY) 144. 		petname = horsename; 145. 	else 146. 		petname = catname; 147.  148.  	/* default pet names */ 149. 	if (!*petname && pettype == PM_LITTLE_DOG) { 150. 	    /* All of these names were for dogs. */ 151.  	    if(Role_if(PM_CAVEMAN)) petname = "Slasher";   /* The Warrior */ 152. 	    if(Role_if(PM_SAMURAI)) petname = "Hachi";     /* Shibuya Station */ 153. 	    if(Role_if(PM_BARBARIAN)) petname = "Idefix";  /* Obelix */ 154. 	    if(Role_if(PM_RANGER)) petname = "Sirius";     /* Orion's dog */ 155. 	}  156.   157.  	mtmp = makemon(&mons[pettype], u.ux, u.uy, MM_EDOG); 158.  159.  	if(!mtmp) return((struct monst *) 0); /* pets were genocided */ 160.  161.  #ifdef STEED 162. 	/* Horses already wear a saddle */ 163. 	if (pettype == PM_PONY && !!(otmp = mksobj(SADDLE, TRUE, FALSE))) { 164. 	    if (mpickobj(mtmp, otmp)) 165. 		panic("merged saddle?"); 166. 	    mtmp->misc_worn_check |= W_SADDLE; 167. 	    otmp->dknown = otmp->bknown = otmp->rknown = 1; 168. 	    otmp->owornmask = W_SADDLE; 169. 	    otmp->leashmon = mtmp->m_id; 170. 	    update_mon_intrinsics(mtmp, otmp, TRUE, TRUE); 171. 	}  172.  #endif 173.  174.  	if (!petname_used++ && *petname) 175. 		mtmp = christen_monst(mtmp, petname); 176.  177.  	initedog(mtmp); 178. 	return(mtmp); 179. }  180.   181.  /* record `last move time' for all monsters prior to level save so that 182.    mon_arrive can catch up for lost time when they're restored later */ 183. void 184. update_mlstmv 185. {  186.  	struct monst *mon; 187.  188.  	/* monst->mlstmv used to be updated every time `monst' actually moved, 189. 	   but that is no longer the case so we just do a blanket assignment */ 190. 	for (mon = fmon; mon; mon = mon->nmon) 191. 	    if (!DEADMONSTER(mon)) mon->mlstmv = monstermoves; 192. }  193.   194.  void 195. losedogs 196. {  197.  	register struct monst *mtmp, *mtmp0 = 0, *mtmp2; 198.  199.  	while ((mtmp = mydogs) != 0) { 200. 		mydogs = mtmp->nmon; 201. 		mon_arrive(mtmp, TRUE); 202. 	}  203.   204.  	for(mtmp = migrating_mons; mtmp; mtmp = mtmp2) { 205. 		mtmp2 = mtmp->nmon; 206. 		if (mtmp->mux == u.uz.dnum && mtmp->muy == u.uz.dlevel) { 207. 		    if(mtmp == migrating_mons) 208. 			migrating_mons = mtmp->nmon; 209. 		    else 210. 			mtmp0->nmon = mtmp->nmon; 211. 		    mon_arrive(mtmp, FALSE); 212. 		} else 213. 		    mtmp0 = mtmp; 214. 	}  215.  }  216.   217.  /* called from resurrect in addition to losedogs */ 218. void 219. mon_arrive(mtmp, with_you) 220. struct monst *mtmp; 221. boolean with_you; 222. {  223.  	struct trap *t; 224. 	xchar xlocale, ylocale, xyloc, xyflags, wander; 225. 	int num_segs; 226.  227.  	mtmp->nmon = fmon; 228. 	fmon = mtmp; 229. 	if (mtmp->isshk) 230. 	    set_residency(mtmp, FALSE); 231.  232.  	num_segs = mtmp->wormno; 233. 	/* baby long worms have no tail so don't use is_longworm */ 234. 	if ((mtmp->data == &mons[PM_LONG_WORM]) &&  235.  #ifdef DCC30_BUG  236.  	    (mtmp->wormno = get_wormno, mtmp->wormno != 0)) 237. #else 238. 	    (mtmp->wormno = get_wormno) != 0)  239.  #endif  240.  	{  241.  	    initworm(mtmp, num_segs);  242.  	    /* tail segs are not yet initialized or displayed */  243.  	} else mtmp->wormno = 0;  244.   245.  	/* some monsters might need to do something special upon arrival  246.  	   _after_ the current level has been fully set up; see dochug */  247.  	mtmp->mstrategy |= STRAT_ARRIVE;  248.   249.  	/* make sure mnexto(rloc_to(set_apparxy)) doesn't use stale data */  250.  	mtmp->mux = u.ux,  mtmp->muy = u.uy;  251.  	xyloc	= mtmp->mtrack[0].x;  252.  	xyflags = mtmp->mtrack[0].y;  253.  	xlocale = mtmp->mtrack[1].x;  254.  	ylocale = mtmp->mtrack[1].y;  255.  	mtmp->mtrack[0].x = mtmp->mtrack[0].y = 0;  256.  	mtmp->mtrack[1].x = mtmp->mtrack[1].y = 0;  257.   258.  #ifdef STEED  259.  	if (mtmp == u.usteed)  260.  	    return;	/* don't place steed on the map */  261.  #endif 262. 	if (with_you) { 263. 	    /* When a monster accompanies you, sometimes it will arrive 264. 	       at your intended destination and you'll end up next to  265. that spot. This code doesn't control the final outcome; 266. 	       goto_level(do.c) decides who ends up at your target spot 267. 	       when there is a monster there too. */ 268.  	    if (!MON_AT(u.ux, u.uy) &&  269.  		    !rn2(mtmp->mtame ? 10 : mtmp->mpeaceful ? 5 : 2)) 270.  		rloc_to(mtmp, u.ux, u.uy); 271. 	    else 272. 		mnexto(mtmp); 273. 	    return; 274. 	}  275.  	/*  276.  	 * The monster arrived on this level independently of the player. 277. 	 * Its coordinate fields were overloaded for use as flags that 278. 	 * specify its final destination. 279. 	 */  280.   281.  	if (mtmp->mlstmv < monstermoves - 1L) { 282. 	    /* heal monster for time spent in limbo */ 283. 	    long nmv = monstermoves - 1L - mtmp->mlstmv; 284.  285.  	    mon_catchup_elapsed_time(mtmp, nmv); 286. 	    mtmp->mlstmv = monstermoves - 1L; 287.  288.  	    /* let monster move a bit on new level (see placement code below) */ 289. 	    wander = (xchar) min(nmv, 8); 290. 	} else 291. 	    wander = 0; 292.  293.  	switch (xyloc) { 294. 	 case MIGR_APPROX_XY:	/* {x,y}locale set above */ 295. 		break; 296. 	 case MIGR_EXACT_XY:	wander = 0; 297. 		break; 298. 	 case MIGR_NEAR_PLAYER:	xlocale = u.ux,  ylocale = u.uy; 299. 		break; 300. 	 case MIGR_STAIRS_UP:	xlocale = xupstair,  ylocale = yupstair; 301. 		break; 302. 	 case MIGR_STAIRS_DOWN:	xlocale = xdnstair,  ylocale = ydnstair; 303. 		break; 304. 	 case MIGR_LADDER_UP:	xlocale = xupladder,  ylocale = yupladder; 305. 		break; 306. 	 case MIGR_LADDER_DOWN:	xlocale = xdnladder,  ylocale = ydnladder; 307. 		break; 308. 	 case MIGR_SSTAIRS:	xlocale = sstairs.sx,  ylocale = sstairs.sy; 309. 		break; 310. 	 case MIGR_PORTAL: 311. 		if (In_endgame(&u.uz)) { 312. 		    /* there is no arrival portal for endgame levels */ 313. 		    /* BUG[?]: for simplicity, this code relies on the fact 314. 		       that we know that the current endgame levels always 315. 		       build upwards and never have any exclusion subregion 316. 		       inside their TELEPORT_REGION settings. */ 317.  		    xlocale = rn1(updest.hx - updest.lx + 1, updest.lx); 318. 		    ylocale = rn1(updest.hy - updest.ly + 1, updest.ly); 319. 		    break; 320. 		}  321.  		/* find the arrival portal */ 322. 		for (t = ftrap; t; t = t->ntrap) 323. 		    if (t->ttyp == MAGIC_PORTAL) break; 324. 		if (t) { 325. 		    xlocale = t->tx,  ylocale = t->ty; 326. 		    break; 327. 		} else { 328. 		    impossible("mon_arrive: no corresponding portal?"); 329. 		} /*FALLTHRU*/ 330. 	 default: 331. 	 case MIGR_RANDOM:	xlocale = ylocale = 0; 332. 		    break; 333. 	    }  334.   335.  	if (xlocale && wander) { 336. 	    /* monster moved a bit; pick a nearby location */ 337. 	    /* mnearto deals w/stone, et al */ 338. 	    char *r = in_rooms(xlocale, ylocale, 0); 339. 	    if (r && *r) { 340. 		coord c;  341. /* somexy handles irregular rooms */ 342. 		if (somexy(&rooms[*r - ROOMOFFSET], &c)) 343. 		    xlocale = c.x,  ylocale = c.y;  344. else 345. 		    xlocale = ylocale = 0; 346. 	    } else {		/* not in a room */ 347. 		int i, j;  348. i = max(1, xlocale - wander); 349. 		j = min(COLNO-1, xlocale + wander); 350. 		xlocale = rn1(j - i, i); 351. 		i = max(0, ylocale - wander); 352. 		j = min(ROWNO-1, ylocale + wander); 353. 		ylocale = rn1(j - i, i); 354. 	    }  355.  	}	/* moved a bit */ 356.  357.  	mtmp->mx = 0;	/*(already is 0)*/ 358. 	mtmp->my = xyflags; 359. 	if (xlocale) 360. 	    (void) mnearto(mtmp, xlocale, ylocale, FALSE); 361. 	else { 362. 	    if (!rloc(mtmp,TRUE)) { 363. 		/*  364.  		 * Failed to place migrating monster, 365. 		 * probably because the level is full. 366. 		 * Dump the monster's cargo and leave the monster dead. 367. 		 */  368.  	    	struct obj *obj, *corpse; 369. 		while ((obj = mtmp->minvent) != 0) { 370. 		    obj_extract_self(obj); 371. 		    obj_no_longer_held(obj); 372. 		    if (obj->owornmask & W_WEP) 373. 			setmnotwielded(mtmp,obj); 374. 		    obj->owornmask = 0L; 375. 		    if (xlocale && ylocale) 376. 			    place_object(obj, xlocale, ylocale); 377. 		    else { 378. 		    	rloco(obj); 379. 			get_obj_location(obj, &xlocale, &ylocale, 0); 380. 		    }  381.  		}  382.  		corpse = mkcorpstat(CORPSE, (struct monst *)0, mtmp->data,  383.  				xlocale, ylocale, FALSE); 384. #ifndef GOLDOBJ 385. 		if (mtmp->mgold) { 386. 		    if (xlocale == 0 && ylocale == 0 && corpse) { 387. 			(void) get_obj_location(corpse, &xlocale, &ylocale, 0); 388. 			(void) mkgold(mtmp->mgold, xlocale, ylocale); 389. 		    }  390.  		    mtmp->mgold = 0L; 391. 		}  392.  #endif 393. 		mongone(mtmp); 394. 	    }  395.  	}  396.  }  397.   398.  /* heal monster for time spent elsewhere */ 399. void 400. mon_catchup_elapsed_time(mtmp, nmv) 401. struct monst *mtmp; 402. long nmv;		/* number of moves */ 403. {  404.  	int imv = 0;	/* avoid zillions of casts and lint warnings */ 405.  406.  #if defined(DEBUG) || defined(BETA) 407. 	if (nmv < 0L) {			/* crash likely... */ 408.  	    panic("catchup from future time?"); 409. 	    /*NOTREACHED*/ 410. 	    return; 411. 	} else if (nmv == 0L) {		/* safe, but should'nt happen */ 412. 	    impossible("catchup from now?"); 413. 	} else 414. #endif 415. 	if (nmv >= LARGEST_INT)		/* paranoia */ 416. 	    imv = LARGEST_INT - 1; 417. 	else 418. 	    imv = (int)nmv; 419.  420.  	/* might stop being afraid, blind or frozen */ 421. 	/* set to 1 and allow final decrement in movemon */ 422. 	if (mtmp->mblinded) { 423. 	    if (imv >= (int) mtmp->mblinded) mtmp->mblinded = 1; 424. 	    else mtmp->mblinded -= imv; 425. 	}  426.  	if (mtmp->mfrozen) { 427. 	    if (imv >= (int) mtmp->mfrozen) mtmp->mfrozen = 1; 428. 	    else mtmp->mfrozen -= imv; 429. 	}  430.  	if (mtmp->mfleetim) { 431. 	    if (imv >= (int) mtmp->mfleetim) mtmp->mfleetim = 1; 432. 	    else mtmp->mfleetim -= imv; 433. 	}  434.   435.  	/* might recover from temporary trouble */ 436. 	if (mtmp->mtrapped && rn2(imv + 1) > 40/2) mtmp->mtrapped = 0; 437. 	if (mtmp->mconf    && rn2(imv + 1) > 50/2) mtmp->mconf = 0; 438. 	if (mtmp->mstun    && rn2(imv + 1) > 10/2) mtmp->mstun = 0; 439.  440.  	/* might finish eating or be able to use special ability again */ 441. 	if (imv > mtmp->meating) mtmp->meating = 0; 442. 	else mtmp->meating -= imv; 443. 	if (imv > mtmp->mspec_used) mtmp->mspec_used = 0; 444. 	else mtmp->mspec_used -= imv; 445.  446.  	/* reduce tameness for every 150 moves you are separated */ 447. 	if (mtmp->mtame) { 448. 	    int wilder = (imv + 75) / 150; 449. 	    if (mtmp->mtame > wilder) mtmp->mtame -= wilder;	/* less tame */ 450. 	    else if (mtmp->mtame > rn2(wilder)) mtmp->mtame = 0;  /* untame */ 451. 	    else mtmp->mtame = mtmp->mpeaceful = 0;		/* hostile! */ 452.  	}  453.  	/* check to see if it would have died as a pet; if so, go wild instead 454. 	 * of dying the next time we call dog_move 455. 	 */  456.  	if (mtmp->mtame && !mtmp->isminion &&  457.  			(carnivorous(mtmp->data) || herbivorous(mtmp->data))) { 458. 	    struct edog *edog = EDOG(mtmp); 459.  460.  	    if ((monstermoves > edog->hungrytime + 500 && mtmp->mhp < 3) ||  461.  		    (monstermoves > edog->hungrytime + 750)) 462. 		mtmp->mtame = mtmp->mpeaceful = 0; 463. 	}  464.   465.  	if (!mtmp->mtame && mtmp->mleashed) { 466. 	    /* leashed monsters should always be with hero, consequently 467. 	       never losing any time to be accounted for later */ 468. 	    impossible("catching up for leashed monster?"); 469. 	    m_unleash(mtmp, FALSE); 470. 	}  471.   472.  	/* recover lost hit points */ 473. 	if (!regenerates(mtmp->data)) imv /= 20; 474. 	if (mtmp->mhp + imv >= mtmp->mhpmax) 475. 	    mtmp->mhp = mtmp->mhpmax; 476. 	else mtmp->mhp += imv; 477. }  478.   479.  #endif /* OVLB */ 480. #ifdef OVL2 481.  482.  /* called when you move to another level */ 483. void 484. keepdogs(pets_only) 485. boolean pets_only;	/* true for ascension or final escape */ 486. {  487.  	register struct monst *mtmp, *mtmp2; 488. 	register struct obj *obj; 489. 	int num_segs; 490. 	boolean stay_behind; 491.  492.  	for (mtmp = fmon; mtmp; mtmp = mtmp2) { 493. 	    mtmp2 = mtmp->nmon; 494. 	    if (DEADMONSTER(mtmp)) continue; 495. 	    if (pets_only && !mtmp->mtame) continue; 496. 	    if (((monnear(mtmp, u.ux, u.uy) && levl_follower(mtmp)) || 497. #ifdef STEED 498. 			(mtmp == u.usteed) || 499. #endif 500. 		/* the wiz will level t-port from anywhere to chase 501. 		   the amulet; if you don't have it, will chase you 502. 		   only if in range. -3. */ 503.  			(u.uhave.amulet && mtmp->iswiz))  504.  		&& ((!mtmp->msleeping && mtmp->mcanmove) 505. #ifdef STEED 506. 		    /* eg if level teleport or new trap, steed has no control 507. 		       to avoid following */ 508. 		    || (mtmp == u.usteed) 509. #endif 510. 		    )  511.  		/* monster won't follow if it hasn't noticed you yet */  512.  		&& !(mtmp->mstrategy & STRAT_WAITFORU)) { 513. 		stay_behind = FALSE; 514. 		if (mtmp->mtame && mtmp->meating) { 515. 			if (canseemon(mtmp)) 516. 			    pline("%s is still eating.", Monnam(mtmp)); 517. 			stay_behind = TRUE; 518. 		} else if (mon_has_amulet(mtmp)) { 519. 			if (canseemon(mtmp)) 520. 			    pline("%s seems very disoriented for a moment.",  521.  				Monnam(mtmp)); 522. 			stay_behind = TRUE; 523. 		} else if (mtmp->mtame && mtmp->mtrapped) { 524. 			if (canseemon(mtmp)) 525. 			    pline("%s is still trapped.", Monnam(mtmp)); 526. 			stay_behind = TRUE; 527. 		}  528.  #ifdef STEED 529. 		if (mtmp == u.usteed) stay_behind = FALSE; 530. #endif 531. 		if (stay_behind) { 532. 			if (mtmp->mleashed) { 533. 				pline("%s leash suddenly comes loose.",  534.  					humanoid(mtmp->data)  535.  					    ? (mtmp->female ? "Her" : "His") 536.  					    : "Its"); 537. 				m_unleash(mtmp, FALSE); 538. 			}  539.  			continue; 540. 		}  541.  		if (mtmp->isshk) 542. 			set_residency(mtmp, TRUE); 543.  544.  		if (mtmp->wormno) { 545. 		    register int cnt; 546. 		    /* NOTE: worm is truncated to # segs = max wormno size */ 547. 		    cnt = count_wsegs(mtmp); 548. 		    num_segs = min(cnt, MAX_NUM_WORMS - 1); 549. 		    wormgone(mtmp); 550. 		} else num_segs = 0; 551.  552.  		/* set minvent's obj->no_charge to 0 */ 553. 		for(obj = mtmp->minvent; obj; obj = obj->nobj) { 554. 		    if (Has_contents(obj)) 555. 			picked_container(obj);	/* does the right thing */ 556. 		    obj->no_charge = 0; 557. 		}  558.   559.  		relmon(mtmp); 560. 		newsym(mtmp->mx,mtmp->my); 561. 		mtmp->mx = mtmp->my = 0; /* avoid mnexto/MON_AT problem */ 562. 		mtmp->wormno = num_segs; 563. 		mtmp->mlstmv = monstermoves; 564. 		mtmp->nmon = mydogs; 565. 		mydogs = mtmp; 566. 	    } else if (mtmp->iswiz) { 567. 		/* we want to be able to find him when his next resurrection 568. 		   chance comes up, but have him resume his present location 569. 		   if player returns to this level before that time */ 570. 		migrate_to_level(mtmp, ledger_no(&u.uz),  571.  				 MIGR_EXACT_XY, (coord *)0); 572. 	    } else if (mtmp->mleashed) { 573. 		/* this can happen if your quest leader ejects you from the 574. 		   "home" level while a leashed pet isn't next to you */ 575. 		pline("%s leash goes slack.", s_suffix(Monnam(mtmp))); 576. 		m_unleash(mtmp, FALSE); 577. 	    }  578.  	}  579.  }  580.   581.  #endif /* OVL2 */ 582. #ifdef OVLB 583.  584.  void 585. migrate_to_level(mtmp, tolev, xyloc, cc) 586. 	register struct monst *mtmp; 587. 	xchar tolev;	/* destination level */ 588. 	xchar xyloc;	/* MIGR_xxx destination xy location: */ 589. 	coord *cc;	/* optional destination coordinates */ 590. {  591.  	register struct obj *obj; 592. 	d_level new_lev; 593. 	xchar xyflags; 594. 	int num_segs = 0;	/* count of worm segments */ 595.  596.  	if (mtmp->isshk) 597. 	    set_residency(mtmp, TRUE); 598.  599.  	if (mtmp->wormno) { 600. 	    register int cnt; 601. 	  /* **** NOTE: worm is truncated to # segs = max wormno size **** */ 602. 	    cnt = count_wsegs(mtmp); 603. 	    num_segs = min(cnt, MAX_NUM_WORMS - 1); 604. 	    wormgone(mtmp); 605. 	}  606.   607.  	/* set minvent's obj->no_charge to 0 */ 608. 	for(obj = mtmp->minvent; obj; obj = obj->nobj) { 609. 	    if (Has_contents(obj)) 610. 		picked_container(obj);	/* does the right thing */ 611. 	    obj->no_charge = 0; 612. 	}  613.   614.  	if (mtmp->mleashed) { 615. 		mtmp->mtame--; 616. 		m_unleash(mtmp, TRUE); 617. 	}  618.  	relmon(mtmp); 619. 	mtmp->nmon = migrating_mons; 620. 	migrating_mons = mtmp; 621. 	newsym(mtmp->mx,mtmp->my); 622.  623.  	new_lev.dnum = ledger_to_dnum((xchar)tolev); 624. 	new_lev.dlevel = ledger_to_dlev((xchar)tolev); 625. 	/* overload mtmp->[mx,my], mtmp->[mux,muy], and mtmp->mtrack[] as */ 626. 	/* destination codes (setup flag bits before altering mx or my) */ 627. 	xyflags = (depth(&new_lev) < depth(&u.uz));	/* 1 => up */ 628. 	if (In_W_tower(mtmp->mx, mtmp->my, &u.uz)) xyflags |= 2; 629. 	mtmp->wormno = num_segs; 630. 	mtmp->mlstmv = monstermoves; 631. 	mtmp->mtrack[1].x = cc ? cc->x : mtmp->mx; 632. 	mtmp->mtrack[1].y = cc ? cc->y : mtmp->my; 633. 	mtmp->mtrack[0].x = xyloc; 634. 	mtmp->mtrack[0].y = xyflags; 635. 	mtmp->mux = new_lev.dnum; 636. 	mtmp->muy = new_lev.dlevel; 637. 	mtmp->mx = mtmp->my = 0;	/* this implies migration */ 638. }  639.   640.  #endif /* OVLB */ 641. #ifdef OVL1 642.  643.  /* return quality of food; the lower the better */ 644. /* fungi will eat even tainted food */ 645. int 646. dogfood(mon,obj) 647. struct monst *mon; 648. register struct obj *obj; 649. {  650.  	boolean carni = carnivorous(mon->data); 651. 	boolean herbi = herbivorous(mon->data); 652. 	struct permonst *fptr = &mons[obj->corpsenm]; 653. 	boolean starving; 654.  655.  	if (is_quest_artifact(obj) || obj_resists(obj, 0, 95)) 656. 	    return (obj->cursed ? TABU : APPORT); 657.  658.  	switch(obj->oclass) { 659. 	case FOOD_CLASS: 660. 	    if (obj->otyp == CORPSE &&  661.  		((touch_petrifies(&mons[obj->corpsenm]) && !resists_ston(mon)) 662. 		 || is_rider(fptr))) 663. 		    return TABU; 664.  665.  	    /* Ghouls only eat old corpses... yum! */ 666.  	    if (mon->data == &mons[PM_GHOUL]) 667. 		return (obj->otyp == CORPSE &&  668.  			peek_at_iced_corpse_age(obj) + 50L <= monstermoves) ? 669. 				DOGFOOD : TABU; 670.  671.  	    if (!carni && !herbi) 672. 		    return (obj->cursed ? UNDEF : APPORT); 673.  674.  	    /* a starving pet will eat almost anything */ 675. 	    starving = (mon->mtame && !mon->isminion &&  676.  			EDOG(mon)->mhpmax_penalty); 677.  678.  	    switch (obj->otyp) { 679. 		case TRIPE_RATION: 680. 		case MEATBALL: 681. 		case MEAT_RING: 682. 		case MEAT_STICK: 683. 		case HUGE_CHUNK_OF_MEAT: 684. 		    return (carni ? DOGFOOD : MANFOOD); 685. 		case EGG: 686. 		    if (touch_petrifies(&mons[obj->corpsenm]) && !resists_ston(mon)) 687. 			return POISON; 688. 		    return (carni ? CADAVER : MANFOOD); 689. 		case CORPSE: 690. 		   if ((peek_at_iced_corpse_age(obj) + 50L <= monstermoves 691. 					    && obj->corpsenm != PM_LIZARD 692. 					    && obj->corpsenm != PM_LICHEN 693. 					    && mon->data->mlet != S_FUNGUS) ||  694.  			(acidic(&mons[obj->corpsenm]) && !resists_acid(mon)) ||  695.  			(poisonous(&mons[obj->corpsenm]) && 696. 						!resists_poison(mon))) 697. 			return POISON; 698. 		    else if (vegan(fptr)) 699. 			return (herbi ? CADAVER : MANFOOD); 700. 		    else return (carni ? CADAVER : MANFOOD); 701. 		case CLOVE_OF_GARLIC: 702. 		    return (is_undead(mon->data) ? TABU :  703.  			    ((herbi || starving) ? ACCFOOD : MANFOOD)); 704. 		case TIN: 705. 		    return (metallivorous(mon->data) ? ACCFOOD : MANFOOD); 706. 		case APPLE: 707. 		case CARROT: 708. 		    return (herbi ? DOGFOOD : starving ? ACCFOOD : MANFOOD); 709. 		case BANANA: 710. 		    return ((mon->data->mlet == S_YETI) ? DOGFOOD :  711.  			    ((herbi || starving) ? ACCFOOD : MANFOOD)); 712. 		default: 713. 		    if (starving) return ACCFOOD; 714. 		    return (obj->otyp > SLIME_MOLD ?  715.  			    (carni ? ACCFOOD : MANFOOD) : 716.  			    (herbi ? ACCFOOD : MANFOOD)); 717. 	    }  718.  	default: 719. 	    if (obj->otyp == AMULET_OF_STRANGULATION ||  720.  			obj->otyp == RIN_SLOW_DIGESTION) 721. 		return TABU; 722. 	    if (hates_silver(mon->data) &&  723.  		objects[obj->otyp].oc_material == SILVER) 724. 		return(TABU); 725. 	    if (mon->data == &mons[PM_GELATINOUS_CUBE] && is_organic(obj)) 726. 		return(ACCFOOD); 727. 	    if (metallivorous(mon->data) && is_metallic(obj) && (is_rustprone(obj) || mon->data != &mons[PM_RUST_MONSTER])) { 728. 		/* Non-rustproofed ferrous based metals are preferred. */ 729.  		return((is_rustprone(obj) && !obj->oerodeproof) ? DOGFOOD :  730.  			ACCFOOD); 731. 	    }  732.  	    if(!obj->cursed && obj->oclass != BALL_CLASS &&  733.  						obj->oclass != CHAIN_CLASS) 734. 		return(APPORT); 735. 	    /* fall into next case */ 736. 	case ROCK_CLASS: 737. 	    return(UNDEF); 738. 	}  739.  }  740.   741.  #endif /* OVL1 */ 742. #ifdef OVLB 743.  744.  struct monst * 745. tamedog(mtmp, obj) 746. register struct monst *mtmp; 747. register struct obj *obj; 748. {  749.  	register struct monst *mtmp2; 750.  751.  	/* The Wiz, Medusa and the quest nemeses aren't even made peaceful. */ 752.  	if (mtmp->iswiz || mtmp->data == &mons[PM_MEDUSA]  753.  				|| (mtmp->data->mflags3 & M3_WANTSARTI)) 754. 		return((struct monst *)0); 755.  756.  	/* worst case, at least it'll be peaceful. */ 757.  	mtmp->mpeaceful = 1; 758. 	set_malign(mtmp); 759. 	if(flags.moonphase == FULL_MOON && night && rn2(6) && obj  760.  						&& mtmp->data->mlet == S_DOG) 761. 		return((struct monst *)0); 762.  763.  	/* If we cannot tame it, at least it's no longer afraid. */ 764.  	mtmp->mflee = 0; 765. 	mtmp->mfleetim = 0; 766.  767.  	/* make grabber let go now, whether it becomes tame or not */ 768. 	if (mtmp == u.ustuck) { 769. 	    if (u.uswallow) 770. 		expels(mtmp, mtmp->data, TRUE); 771. 	    else if (!(Upolyd && sticks(youmonst.data))) 772. 		unstuck(mtmp); 773. 	}  774.   775.  	/* feeding it treats makes it tamer */ 776. 	if (mtmp->mtame && obj) { 777. 	    int tasty; 778.  779.  	    if (mtmp->mcanmove && !mtmp->mconf && !mtmp->meating &&  780.  		((tasty = dogfood(mtmp, obj)) == DOGFOOD || 781. 		 (tasty <= ACCFOOD && EDOG(mtmp)->hungrytime <= monstermoves))) { 782. 		/* pet will "catch" and eat this thrown food */ 783. 		if (canseemon(mtmp)) { 784. 		    boolean big_corpse = (obj->otyp == CORPSE &&  785.  					  obj->corpsenm >= LOW_PM &&  786.  				mons[obj->corpsenm].msize > mtmp->data->msize); 787. 		    pline("%s catches %s%s",  788.  			  Monnam(mtmp), the(xname(obj)),  789.  			  !big_corpse ? "." : ", or vice versa!"); 790. 		} else if (cansee(mtmp->mx,mtmp->my)) 791. 		    pline("%s.", Tobjnam(obj, "stop")); 792. 		/* dog_eat expects a floor object */ 793. 		place_object(obj, mtmp->mx, mtmp->my); 794. 		(void) dog_eat(mtmp, obj, mtmp->mx, mtmp->my, FALSE); 795. 		/* eating might have killed it, but that doesn't matter here; 796. 		   a non-null result suppresses "miss" message for thrown 797. 		   food and also implies that the object has been deleted */ 798. 		return mtmp; 799. 	    } else 800. 		return (struct monst *)0; 801. 	}  802.   803.  	if (mtmp->mtame || !mtmp->mcanmove ||  804.  	    /* monsters with conflicting structures cannot be tamed */  805.  	    mtmp->isshk || mtmp->isgd || mtmp->ispriest || mtmp->isminion ||  806.  	    is_covetous(mtmp->data) || is_human(mtmp->data) ||  807.  	    (is_demon(mtmp->data) && !is_demon(youmonst.data)) ||  808.  	    (obj && dogfood(mtmp, obj) >= MANFOOD)) return (struct monst *)0; 809.  810.  	if (mtmp->m_id == quest_status.leader_m_id) 811. 	    return((struct monst *)0); 812.  813.  	/* make a new monster which has the pet extension */ 814. 	mtmp2 = newmonst(sizeof(struct edog) + mtmp->mnamelth); 815. 	*mtmp2 = *mtmp; 816. 	mtmp2->mxlth = sizeof(struct edog); 817. 	if (mtmp->mnamelth) Strcpy(NAME(mtmp2), NAME(mtmp)); 818. 	initedog(mtmp2); 819. 	replmon(mtmp, mtmp2); 820. 	/* `mtmp' is now obsolete */ 821.  822.  	if (obj) {		/* thrown food */ 823. 	    /* defer eating until the edog extension has been set up */ 824. 	    place_object(obj, mtmp2->mx, mtmp2->my);	/* put on floor */ 825. 	    /* devour the food (might grow into larger, genocided monster) */ 826. 	    if (dog_eat(mtmp2, obj, mtmp2->mx, mtmp2->my, TRUE) == 2) 827. 		return mtmp2;		/* oops, it died... */ 828.  	    /* `obj' is now obsolete */ 829. 	}  830.   831.  	newsym(mtmp2->mx, mtmp2->my); 832. 	if (attacktype(mtmp2->data, AT_WEAP)) { 833. 		mtmp2->weapon_check = NEED_HTH_WEAPON; 834. 		(void) mon_wield_item(mtmp2); 835. 	}  836.  	return(mtmp2); 837. }  838.   839.  /*  840.   * Called during pet revival or pet life-saving. 841.  * If you killed the pet, it revives wild. 842.  * If you abused the pet a lot while alive, it revives wild. 843.  * If you abused the pet at all while alive, it revives untame. 844.  * If the pet wasn't abused and was very tame, it might revive tame. 845.  */  846.  void 847. wary_dog(mtmp, was_dead) 848. struct monst *mtmp; 849. boolean was_dead; 850. {  851.      struct edog *edog; 852.     boolean quietly = was_dead; 853.  854.      mtmp->meating = 0; 855.     if (!mtmp->mtame) return; 856.     edog = !mtmp->isminion ? EDOG(mtmp) : 0; 857.  858.      /* if monster was starving when it died, undo that now */ 859.     if (edog && edog->mhpmax_penalty) { 860. 	mtmp->mhpmax += edog->mhpmax_penalty; 861. 	mtmp->mhp += edog->mhpmax_penalty;	/* heal it */ 862. 	edog->mhpmax_penalty = 0; 863.     }  864.   865.      if (edog && (edog->killed_by_u == 1 || edog->abuse > 2)) { 866. 	mtmp->mpeaceful = mtmp->mtame = 0; 867. 	if (edog->abuse >= 0 && edog->abuse < 10) 868. 	    if (!rn2(edog->abuse + 1)) mtmp->mpeaceful = 1; 869. 	if(!quietly && cansee(mtmp->mx, mtmp->my)) { 870. 	    if (haseyes(youmonst.data)) { 871. 		if (haseyes(mtmp->data)) 872. 			pline("%s %s to look you in the %s.",  873.  				Monnam(mtmp),  874.  				mtmp->mpeaceful ? "seems unable" :  875.  					    "refuses",  876.  				body_part(EYE)); 877. 		else 878. 			pline("%s avoids your gaze.",  879.  				Monnam(mtmp)); 880. 	    }  881.  	}  882.      } else { 883. 	/* chance it goes wild anyway - Pet Semetary */ 884. 	if (!rn2(mtmp->mtame)) { 885. 	    mtmp->mpeaceful = mtmp->mtame = 0; 886. 	}  887.      }  888.      if (!mtmp->mtame) { 889. 	newsym(mtmp->mx, mtmp->my); 890. 	/* a life-saved monster might be leashed; 891. 	   don't leave it that way if it's no longer tame */ 892. 	if (mtmp->mleashed) m_unleash(mtmp, TRUE); 893.     }  894.   895.      /* if its still a pet, start a clean pet-slate now */ 896.     if (edog && mtmp->mtame) { 897. 	edog->revivals++; 898. 	edog->killed_by_u = 0; 899. 	edog->abuse = 0; 900. 	edog->ogoal.x = edog->ogoal.y = -1; 901. 	if (was_dead || edog->hungrytime < monstermoves + 500L) 902. 	    edog->hungrytime = monstermoves + 500L; 903. 	if (was_dead) { 904. 	    edog->droptime = 0L; 905. 	    edog->dropdist = 10000; 906. 	    edog->whistletime = 0L; 907. 	    edog->apport = 5; 908. 	} /* else lifesaved, so retain current values */ 909.     }  910.  }  911.   912.  void 913. abuse_dog(mtmp) 914. struct monst *mtmp; 915. {  916.  	if (!mtmp->mtame) return; 917.  918.  	if (Aggravate_monster || Conflict) mtmp->mtame /=2; 919. 	else mtmp->mtame--; 920.  921.  	if (mtmp->mtame && !mtmp->isminion) 922. 	    EDOG(mtmp)->abuse++; 923.  924.  	if (!mtmp->mtame && mtmp->mleashed) 925. 	    m_unleash(mtmp, TRUE); 926.  927.  	/* don't make a sound if pet is in the middle of leaving the level */ 928. 	/* newsym isn't necessary in this case either */ 929. 	if (mtmp->mx != 0) { 930. 	    if (mtmp->mtame && rn2(mtmp->mtame)) yelp(mtmp); 931. 	    else growl(mtmp);	/* give them a moment's worry */ 932. 	  933.  	    if (!mtmp->mtame) newsym(mtmp->mx, mtmp->my); 934. 	}  935.  }  936.   937.  #endif /* OVLB */ 938.  939.  /*dog.c*/