Use define for iron ball weight increment
[aNetHack.git] / src / steed.c
blob1129a27cc41eef357103adf905949f353acadeb5
1 /* NetHack 3.6 steed.c $NHDT-Date: 1445906867 2015/10/27 00:47:47 $ $NHDT-Branch: master $:$NHDT-Revision: 1.47 $ */
2 /* Copyright (c) Kevin Hugo, 1998-1999. */
3 /* NetHack may be freely redistributed. See license for details. */
5 #include "hack.h"
7 /* Monsters that might be ridden */
8 static NEARDATA const char steeds[] = { S_QUADRUPED, S_UNICORN, S_ANGEL,
9 S_CENTAUR, S_DRAGON, S_JABBERWOCK,
10 '\0' };
12 STATIC_DCL boolean FDECL(landing_spot, (coord *, int, int));
13 STATIC_DCL void FDECL(maybewakesteed, (struct monst *));
15 /* caller has decided that hero can't reach something while mounted */
16 void
17 rider_cant_reach()
19 You("aren't skilled enough to reach from %s.", y_monnam(u.usteed));
22 /*** Putting the saddle on ***/
24 /* Can this monster wear a saddle? */
25 boolean
26 can_saddle(mtmp)
27 struct monst *mtmp;
29 struct permonst *ptr = mtmp->data;
31 return (index(steeds, ptr->mlet) && (ptr->msize >= MZ_MEDIUM)
32 && (!humanoid(ptr) || ptr->mlet == S_CENTAUR) && !amorphous(ptr)
33 && !noncorporeal(ptr) && !is_whirly(ptr) && !unsolid(ptr));
36 int
37 use_saddle(otmp)
38 struct obj *otmp;
40 struct monst *mtmp;
41 struct permonst *ptr;
42 int chance;
43 const char *s;
45 if (!u_handsy())
46 return 0;
48 /* Select an animal */
49 if (u.uswallow || Underwater || !getdir((char *) 0)) {
50 pline1(Never_mind);
51 return 0;
53 if (!u.dx && !u.dy) {
54 pline("Saddle yourself? Very funny...");
55 return 0;
57 if (!isok(u.ux + u.dx, u.uy + u.dy)
58 || !(mtmp = m_at(u.ux + u.dx, u.uy + u.dy)) || !canspotmon(mtmp)) {
59 pline("I see nobody there.");
60 return 1;
63 /* Is this a valid monster? */
64 if (mtmp->misc_worn_check & W_SADDLE || which_armor(mtmp, W_SADDLE)) {
65 pline("%s doesn't need another one.", Monnam(mtmp));
66 return 1;
68 ptr = mtmp->data;
69 if (touch_petrifies(ptr) && !uarmg && !Stone_resistance) {
70 char kbuf[BUFSZ];
72 You("touch %s.", mon_nam(mtmp));
73 if (!(poly_when_stoned(youmonst.data) && polymon(PM_STONE_GOLEM))) {
74 Sprintf(kbuf, "attempting to saddle %s", an(mtmp->data->mname));
75 instapetrify(kbuf);
78 if (ptr == &mons[PM_INCUBUS] || ptr == &mons[PM_SUCCUBUS]) {
79 pline("Shame on you!");
80 exercise(A_WIS, FALSE);
81 return 1;
83 if (mtmp->isminion || mtmp->isshk || mtmp->ispriest || mtmp->isgd
84 || mtmp->iswiz) {
85 pline("I think %s would mind.", mon_nam(mtmp));
86 return 1;
88 if (!can_saddle(mtmp)) {
89 You_cant("saddle such a creature.");
90 return 1;
93 /* Calculate your chance */
94 chance = ACURR(A_DEX) + ACURR(A_CHA) / 2 + 2 * mtmp->mtame;
95 chance += u.ulevel * (mtmp->mtame ? 20 : 5);
96 if (!mtmp->mtame)
97 chance -= 10 * mtmp->m_lev;
98 if (Role_if(PM_KNIGHT))
99 chance += 20;
100 switch (P_SKILL(P_RIDING)) {
101 case P_ISRESTRICTED:
102 case P_UNSKILLED:
103 default:
104 chance -= 20;
105 break;
106 case P_BASIC:
107 break;
108 case P_SKILLED:
109 chance += 15;
110 break;
111 case P_EXPERT:
112 chance += 30;
113 break;
115 if (Confusion || Fumbling || Glib)
116 chance -= 20;
117 else if (uarmg && (s = OBJ_DESCR(objects[uarmg->otyp])) != (char *) 0
118 && !strncmp(s, "riding ", 7))
119 /* Bonus for wearing "riding" (but not fumbling) gloves */
120 chance += 10;
121 else if (uarmf && (s = OBJ_DESCR(objects[uarmf->otyp])) != (char *) 0
122 && !strncmp(s, "riding ", 7))
123 /* ... or for "riding boots" */
124 chance += 10;
125 if (otmp->cursed)
126 chance -= 50;
128 /* [intended] steed becomes alert if possible */
129 maybewakesteed(mtmp);
131 /* Make the attempt */
132 if (rn2(100) < chance) {
133 You("put the saddle on %s.", mon_nam(mtmp));
134 if (otmp->owornmask)
135 remove_worn_item(otmp, FALSE);
136 freeinv(otmp);
137 /* mpickobj may free otmp it if merges, but we have already
138 checked for a saddle above, so no merger should happen */
139 (void) mpickobj(mtmp, otmp);
140 mtmp->misc_worn_check |= W_SADDLE;
141 otmp->owornmask = W_SADDLE;
142 otmp->leashmon = mtmp->m_id;
143 update_mon_intrinsics(mtmp, otmp, TRUE, FALSE);
144 } else
145 pline("%s resists!", Monnam(mtmp));
146 return 1;
149 /*** Riding the monster ***/
151 /* Can we ride this monster? Caller should also check can_saddle() */
152 boolean
153 can_ride(mtmp)
154 struct monst *mtmp;
156 return (mtmp->mtame && humanoid(youmonst.data)
157 && !verysmall(youmonst.data) && !bigmonst(youmonst.data)
158 && (!Underwater || is_swimmer(mtmp->data)));
162 doride()
164 boolean forcemount = FALSE;
166 if (u.usteed) {
167 dismount_steed(DISMOUNT_BYCHOICE);
168 } else if (getdir((char *) 0) && isok(u.ux + u.dx, u.uy + u.dy)) {
169 if (wizard && yn("Force the mount to succeed?") == 'y')
170 forcemount = TRUE;
171 return (mount_steed(m_at(u.ux + u.dx, u.uy + u.dy), forcemount));
172 } else {
173 return 0;
175 return 1;
178 /* Start riding, with the given monster */
179 boolean
180 mount_steed(mtmp, force)
181 struct monst *mtmp; /* The animal */
182 boolean force; /* Quietly force this animal */
184 struct obj *otmp;
185 char buf[BUFSZ];
186 struct permonst *ptr;
188 /* Sanity checks */
189 if (u.usteed) {
190 You("are already riding %s.", mon_nam(u.usteed));
191 return (FALSE);
194 /* Is the player in the right form? */
195 if (Hallucination && !force) {
196 pline("Maybe you should find a designated driver.");
197 return (FALSE);
199 /* While riding Wounded_legs refers to the steed's,
200 * not the hero's legs.
201 * That opens up a potential abuse where the player
202 * can mount a steed, then dismount immediately to
203 * heal leg damage, because leg damage is always
204 * healed upon dismount (Wounded_legs context switch).
205 * By preventing a hero with Wounded_legs from
206 * mounting a steed, the potential for abuse is
207 * reduced. However, dismounting still immediately
208 * heals the steed's wounded legs. [In 3.4.3 and
209 * earlier, that unintentionally made the hero's
210 * temporary 1 point Dex loss become permanent.]
212 if (Wounded_legs) {
213 Your("%s are in no shape for riding.", makeplural(body_part(LEG)));
214 if (force && wizard && yn("Heal your legs?") == 'y')
215 HWounded_legs = EWounded_legs = 0;
216 else
217 return (FALSE);
220 if (Upolyd && (!humanoid(youmonst.data) || verysmall(youmonst.data)
221 || bigmonst(youmonst.data) || slithy(youmonst.data))) {
222 You("won't fit on a saddle.");
223 return (FALSE);
225 if (!force && (near_capacity() > SLT_ENCUMBER)) {
226 You_cant("do that while carrying so much stuff.");
227 return (FALSE);
230 /* Can the player reach and see the monster? */
231 if (!mtmp || (!force && ((Blind && !Blind_telepat) || mtmp->mundetected
232 || mtmp->m_ap_type == M_AP_FURNITURE
233 || mtmp->m_ap_type == M_AP_OBJECT))) {
234 pline("I see nobody there.");
235 return (FALSE);
237 if (u.uswallow || u.ustuck || u.utrap || Punished
238 || !test_move(u.ux, u.uy, mtmp->mx - u.ux, mtmp->my - u.uy,
239 TEST_MOVE)) {
240 if (Punished || !(u.uswallow || u.ustuck || u.utrap))
241 You("are unable to swing your %s over.", body_part(LEG));
242 else
243 You("are stuck here for now.");
244 return (FALSE);
247 /* Is this a valid monster? */
248 otmp = which_armor(mtmp, W_SADDLE);
249 if (!otmp) {
250 pline("%s is not saddled.", Monnam(mtmp));
251 return (FALSE);
253 ptr = mtmp->data;
254 if (touch_petrifies(ptr) && !Stone_resistance) {
255 char kbuf[BUFSZ];
257 You("touch %s.", mon_nam(mtmp));
258 Sprintf(kbuf, "attempting to ride %s", an(mtmp->data->mname));
259 instapetrify(kbuf);
261 if (!mtmp->mtame || mtmp->isminion) {
262 pline("I think %s would mind.", mon_nam(mtmp));
263 return (FALSE);
265 if (mtmp->mtrapped) {
266 struct trap *t = t_at(mtmp->mx, mtmp->my);
268 You_cant("mount %s while %s's trapped in %s.", mon_nam(mtmp),
269 mhe(mtmp), an(defsyms[trap_to_defsym(t->ttyp)].explanation));
270 return (FALSE);
273 if (!force && !Role_if(PM_KNIGHT) && !(--mtmp->mtame)) {
274 /* no longer tame */
275 newsym(mtmp->mx, mtmp->my);
276 pline("%s resists%s!", Monnam(mtmp),
277 mtmp->mleashed ? " and its leash comes off" : "");
278 if (mtmp->mleashed)
279 m_unleash(mtmp, FALSE);
280 return (FALSE);
282 if (!force && Underwater && !is_swimmer(ptr)) {
283 You_cant("ride that creature while under water.");
284 return (FALSE);
286 if (!can_saddle(mtmp) || !can_ride(mtmp)) {
287 You_cant("ride such a creature.");
288 return (0);
291 /* Is the player impaired? */
292 if (!force && !is_floater(ptr) && !is_flyer(ptr) && Levitation
293 && !Lev_at_will) {
294 You("cannot reach %s.", mon_nam(mtmp));
295 return (FALSE);
297 if (!force && uarm && is_metallic(uarm) && greatest_erosion(uarm)) {
298 Your("%s armor is too stiff to be able to mount %s.",
299 uarm->oeroded ? "rusty" : "corroded", mon_nam(mtmp));
300 return (FALSE);
302 if (!force
303 && (Confusion || Fumbling || Glib || Wounded_legs || otmp->cursed
304 || (u.ulevel + mtmp->mtame < rnd(MAXULEV / 2 + 5)))) {
305 if (Levitation) {
306 pline("%s slips away from you.", Monnam(mtmp));
307 return FALSE;
309 You("slip while trying to get on %s.", mon_nam(mtmp));
311 Sprintf(buf, "slipped while mounting %s",
312 /* "a saddled mumak" or "a saddled pony called Dobbin" */
313 x_monnam(mtmp, ARTICLE_A, (char *) 0,
314 SUPPRESS_IT | SUPPRESS_INVISIBLE
315 | SUPPRESS_HALLUCINATION,
316 TRUE));
317 losehp(Maybe_Half_Phys(rn1(5, 10)), buf, NO_KILLER_PREFIX);
318 return (FALSE);
321 /* Success */
322 maybewakesteed(mtmp);
323 if (!force) {
324 if (Levitation && !is_floater(ptr) && !is_flyer(ptr))
325 /* Must have Lev_at_will at this point */
326 pline("%s magically floats up!", Monnam(mtmp));
327 You("mount %s.", mon_nam(mtmp));
329 /* setuwep handles polearms differently when you're mounted */
330 if (uwep && is_pole(uwep))
331 unweapon = FALSE;
332 u.usteed = mtmp;
333 remove_monster(mtmp->mx, mtmp->my);
334 teleds(mtmp->mx, mtmp->my, TRUE);
335 return (TRUE);
338 /* You and your steed have moved */
339 void
340 exercise_steed()
342 if (!u.usteed)
343 return;
345 /* It takes many turns of riding to exercise skill */
346 if (u.urideturns++ >= 100) {
347 u.urideturns = 0;
348 use_skill(P_RIDING, 1);
350 return;
353 /* The player kicks or whips the steed */
354 void
355 kick_steed()
357 char He[4];
358 if (!u.usteed)
359 return;
361 /* [ALI] Various effects of kicking sleeping/paralyzed steeds */
362 if (u.usteed->msleeping || !u.usteed->mcanmove) {
363 /* We assume a message has just been output of the form
364 * "You kick <steed>."
366 Strcpy(He, mhe(u.usteed));
367 *He = highc(*He);
368 if ((u.usteed->mcanmove || u.usteed->mfrozen) && !rn2(2)) {
369 if (u.usteed->mcanmove)
370 u.usteed->msleeping = 0;
371 else if (u.usteed->mfrozen > 2)
372 u.usteed->mfrozen -= 2;
373 else {
374 u.usteed->mfrozen = 0;
375 u.usteed->mcanmove = 1;
377 if (u.usteed->msleeping || !u.usteed->mcanmove)
378 pline("%s stirs.", He);
379 else
380 pline("%s rouses %sself!", He, mhim(u.usteed));
381 } else
382 pline("%s does not respond.", He);
383 return;
386 /* Make the steed less tame and check if it resists */
387 if (u.usteed->mtame)
388 u.usteed->mtame--;
389 if (!u.usteed->mtame && u.usteed->mleashed)
390 m_unleash(u.usteed, TRUE);
391 if (!u.usteed->mtame
392 || (u.ulevel + u.usteed->mtame < rnd(MAXULEV / 2 + 5))) {
393 newsym(u.usteed->mx, u.usteed->my);
394 dismount_steed(DISMOUNT_THROWN);
395 return;
398 pline("%s gallops!", Monnam(u.usteed));
399 u.ugallop += rn1(20, 30);
400 return;
404 * Try to find a dismount point adjacent to the steed's location.
405 * If all else fails, try enexto(). Use enexto() as a last resort because
406 * enexto() chooses its point randomly, possibly even outside the
407 * room's walls, which is not what we want.
408 * Adapted from mail daemon code.
410 STATIC_OVL boolean
411 landing_spot(spot, reason, forceit)
412 coord *spot; /* landing position (we fill it in) */
413 int reason;
414 int forceit;
416 int i = 0, x, y, distance, min_distance = -1;
417 boolean found = FALSE;
418 struct trap *t;
420 /* avoid known traps (i == 0) and boulders, but allow them as a backup */
421 if (reason != DISMOUNT_BYCHOICE || Stunned || Confusion || Fumbling)
422 i = 1;
423 for (; !found && i < 2; ++i) {
424 for (x = u.ux - 1; x <= u.ux + 1; x++)
425 for (y = u.uy - 1; y <= u.uy + 1; y++) {
426 if (!isok(x, y) || (x == u.ux && y == u.uy))
427 continue;
429 if (accessible(x, y) && !MON_AT(x, y)) {
430 distance = distu(x, y);
431 if (min_distance < 0 || distance < min_distance
432 || (distance == min_distance && rn2(2))) {
433 if (i > 0 || (((t = t_at(x, y)) == 0 || !t->tseen)
434 && (!sobj_at(BOULDER, x, y)
435 || throws_rocks(youmonst.data)))) {
436 spot->x = x;
437 spot->y = y;
438 min_distance = distance;
439 found = TRUE;
446 /* If we didn't find a good spot and forceit is on, try enexto(). */
447 if (forceit && min_distance < 0
448 && !enexto(spot, u.ux, u.uy, youmonst.data))
449 return FALSE;
451 return found;
454 /* Stop riding the current steed */
455 void
456 dismount_steed(reason)
457 int reason; /* Player was thrown off etc. */
459 struct monst *mtmp;
460 struct obj *otmp;
461 coord cc;
462 const char *verb = "fall";
463 boolean repair_leg_damage = (Wounded_legs != 0L);
464 unsigned save_utrap = u.utrap;
465 boolean have_spot = landing_spot(&cc, reason, 0);
467 mtmp = u.usteed; /* make a copy of steed pointer */
468 /* Sanity check */
469 if (!mtmp) /* Just return silently */
470 return;
472 /* Check the reason for dismounting */
473 otmp = which_armor(mtmp, W_SADDLE);
474 switch (reason) {
475 case DISMOUNT_THROWN:
476 verb = "are thrown";
477 case DISMOUNT_FELL:
478 You("%s off of %s!", verb, mon_nam(mtmp));
479 if (!have_spot)
480 have_spot = landing_spot(&cc, reason, 1);
481 losehp(Maybe_Half_Phys(rn1(10, 10)), "riding accident", KILLED_BY_AN);
482 set_wounded_legs(BOTH_SIDES, (int) HWounded_legs + rn1(5, 5));
483 repair_leg_damage = FALSE;
484 break;
485 case DISMOUNT_POLY:
486 You("can no longer ride %s.", mon_nam(u.usteed));
487 if (!have_spot)
488 have_spot = landing_spot(&cc, reason, 1);
489 break;
490 case DISMOUNT_ENGULFED:
491 /* caller displays message */
492 break;
493 case DISMOUNT_BONES:
494 /* hero has just died... */
495 break;
496 case DISMOUNT_GENERIC:
497 /* no messages, just make it so */
498 break;
499 case DISMOUNT_BYCHOICE:
500 default:
501 if (otmp && otmp->cursed) {
502 You("can't. The saddle %s cursed.",
503 otmp->bknown ? "is" : "seems to be");
504 otmp->bknown = TRUE;
505 return;
507 if (!have_spot) {
508 You("can't. There isn't anywhere for you to stand.");
509 return;
511 if (!has_mname(mtmp)) {
512 pline("You've been through the dungeon on %s with no name.",
513 an(mtmp->data->mname));
514 if (Hallucination)
515 pline("It felt good to get out of the rain.");
516 } else
517 You("dismount %s.", mon_nam(mtmp));
519 /* While riding, Wounded_legs refers to the steed's legs;
520 after dismounting, it reverts to the hero's legs. */
521 if (repair_leg_damage) {
522 /* [TODO: make heal_legs() take a parameter to handle this] */
523 in_steed_dismounting = TRUE;
524 heal_legs();
525 in_steed_dismounting = FALSE;
528 /* Release the steed and saddle */
529 u.usteed = 0;
530 u.ugallop = 0L;
532 /* Set player and steed's position. Try moving the player first
533 unless we're in the midst of creating a bones file. */
534 if (reason == DISMOUNT_BONES) {
535 /* move the steed to an adjacent square */
536 if (enexto(&cc, u.ux, u.uy, mtmp->data))
537 rloc_to(mtmp, cc.x, cc.y);
538 else /* evidently no room nearby; move steed elsewhere */
539 (void) rloc(mtmp, FALSE);
540 return;
542 if (mtmp->mhp > 0) {
543 place_monster(mtmp, u.ux, u.uy);
544 if (!u.uswallow && !u.ustuck && have_spot) {
545 struct permonst *mdat = mtmp->data;
547 /* The steed may drop into water/lava */
548 if (!is_flyer(mdat) && !is_floater(mdat) && !is_clinger(mdat)) {
549 if (is_pool(u.ux, u.uy)) {
550 if (!Underwater)
551 pline("%s falls into the %s!", Monnam(mtmp),
552 surface(u.ux, u.uy));
553 if (!is_swimmer(mdat) && !amphibious(mdat)) {
554 killed(mtmp);
555 adjalign(-1);
557 } else if (is_lava(u.ux, u.uy)) {
558 pline("%s is pulled into the lava!", Monnam(mtmp));
559 if (!likes_lava(mdat)) {
560 killed(mtmp);
561 adjalign(-1);
565 /* Steed dismounting consists of two steps: being moved to another
566 * square, and descending to the floor. We have functions to do
567 * each of these activities, but they're normally called
568 * individually and include an attempt to look at or pick up the
569 * objects on the floor:
570 * teleds() --> spoteffects() --> pickup()
571 * float_down() --> pickup()
572 * We use this kludge to make sure there is only one such attempt.
574 * Clearly this is not the best way to do it. A full fix would
575 * involve having these functions not call pickup() at all,
576 * instead
577 * calling them first and calling pickup() afterwards. But it
578 * would take a lot of work to keep this change from having any
579 * unforeseen side effects (for instance, you would no longer be
580 * able to walk onto a square with a hole, and autopickup before
581 * falling into the hole).
583 /* [ALI] No need to move the player if the steed died. */
584 if (mtmp->mhp > 0) {
585 /* Keep steed here, move the player to cc;
586 * teleds() clears u.utrap
588 in_steed_dismounting = TRUE;
589 teleds(cc.x, cc.y, TRUE);
590 in_steed_dismounting = FALSE;
592 /* Put your steed in your trap */
593 if (save_utrap)
594 (void) mintrap(mtmp);
596 /* Couldn't... try placing the steed */
597 } else if (enexto(&cc, u.ux, u.uy, mtmp->data)) {
598 /* Keep player here, move the steed to cc */
599 rloc_to(mtmp, cc.x, cc.y);
600 /* Player stays put */
601 /* Otherwise, kill the steed */
602 } else {
603 killed(mtmp);
604 adjalign(-1);
608 /* Return the player to the floor */
609 if (reason != DISMOUNT_ENGULFED) {
610 in_steed_dismounting = TRUE;
611 (void) float_down(0L, W_SADDLE);
612 in_steed_dismounting = FALSE;
613 context.botl = 1;
614 (void) encumber_msg();
615 vision_full_recalc = 1;
616 } else
617 context.botl = 1;
618 /* polearms behave differently when not mounted */
619 if (uwep && is_pole(uwep))
620 unweapon = TRUE;
621 return;
624 /* when attempting to saddle or mount a sleeping steed, try to wake it up
625 (for the saddling case, it won't be u.usteed yet) */
626 STATIC_OVL void
627 maybewakesteed(steed)
628 struct monst *steed;
630 int frozen = (int) steed->mfrozen;
631 boolean wasimmobile = steed->msleeping || !steed->mcanmove;
633 steed->msleeping = 0;
634 if (frozen) {
635 frozen = (frozen + 1) / 2; /* half */
636 /* might break out of timed sleep or paralysis */
637 if (!rn2(frozen)) {
638 steed->mfrozen = 0;
639 steed->mcanmove = 1;
640 } else {
641 /* didn't awake, but remaining duration is halved */
642 steed->mfrozen = frozen;
645 if (wasimmobile && !steed->msleeping && steed->mcanmove)
646 pline("%s wakes up.", Monnam(steed));
647 /* regardless of waking, terminate any meal in progress */
648 finish_meating(steed);
651 /* decide whether hero's steed is able to move;
652 doesn't check for holding traps--those affect the hero directly */
653 boolean
654 stucksteed(checkfeeding)
655 boolean checkfeeding;
657 struct monst *steed = u.usteed;
659 if (steed) {
660 /* check whether steed can move */
661 if (steed->msleeping || !steed->mcanmove) {
662 pline("%s won't move!", upstart(y_monnam(steed)));
663 return TRUE;
665 /* optionally check whether steed is in the midst of a meal */
666 if (checkfeeding && steed->meating) {
667 pline("%s is still eating.", upstart(y_monnam(steed)));
668 return TRUE;
671 return FALSE;
674 void
675 place_monster(mon, x, y)
676 struct monst *mon;
677 int x, y;
679 if (mon == u.usteed
680 /* special case is for convoluted vault guard handling */
681 || (DEADMONSTER(mon) && !(mon->isgd && x == 0 && y == 0))) {
682 impossible("placing %s onto map?",
683 (mon == u.usteed) ? "steed" : "defunct monster");
684 return;
686 mon->mx = x, mon->my = y;
687 level.monsters[x][y] = mon;
690 /*steed.c*/