nethack/src/attrib.c

/* NetHack 3.5	attrib.c	$NHDT-Date: 1426465433 2015/03/16 00:23:53 $  $NHDT-Branch: debug $:$NHDT-Revision: 1.34 $ */
/* NetHack 3.5	attrib.c	$Date: 2011/10/01 00:25:55 $  $Revision: 1.30 $ */
/*	Copyright 1988, 1989, 1990, 1992, M. Stephenson		  */
/* NetHack may be freely redistributed.  See license for details. */

/*  attribute modification routines. */

#include "hack.h"
#include <ctype.h>

	/* part of the output on gain or loss of attribute */
static
const char	* const plusattr[] = {
	"strong", "smart", "wise", "agile", "tough", "charismatic"
},
		* const minusattr[] = {
	"weak", "stupid", "foolish", "clumsy", "fragile", "repulsive"
};


static
const struct innate {
	schar	ulevel;
	long	*ability;
	const char *gainstr, *losestr;
}	arc_abil[] = { {	 1, &(HStealth), "", "" },
		     {   1, &(HFast), "", "" },
		     {  10, &(HSearching), "perceptive", "" },
		     {	 0, 0, 0, 0 } },

	bar_abil[] = { {	 1, &(HPoison_resistance), "", "" },
		     {   7, &(HFast), "quick", "slow" },
		     {  15, &(HStealth), "stealthy", "" },
		     {	 0, 0, 0, 0 } },

	cav_abil[] = { {	 7, &(HFast), "quick", "slow" },
		     {	15, &(HWarning), "sensitive", "" },
		     {	 0, 0, 0, 0 } },

	hea_abil[] = { {	 1, &(HPoison_resistance), "", "" },
		     {	15, &(HWarning), "sensitive", "" },
		     {	 0, 0, 0, 0 } },

	kni_abil[] = { {	 7, &(HFast), "quick", "slow" },
		     {	 0, 0, 0, 0 } },

	mon_abil[] = { {   1, &(HFast), "", "" },
		     {   1, &(HSleep_resistance), "", "" },
		     {   1, &(HSee_invisible), "", "" },
		     {   3, &(HPoison_resistance), "healthy", "" },
		     {   5, &(HStealth), "stealthy", "" },
		     {   7, &(HWarning), "sensitive", "" },
		     {   9, &(HSearching), "perceptive", "unaware" },
		     {  11, &(HFire_resistance), "cool", "warmer" },
		     {  13, &(HCold_resistance), "warm", "cooler" },
		     {  15, &(HShock_resistance), "insulated", "conductive" },
		     {  17, &(HTeleport_control), "controlled","uncontrolled" },
		     {   0, 0, 0, 0 } },

	pri_abil[] = { {	15, &(HWarning), "sensitive", "" },
		     {  20, &(HFire_resistance), "cool", "warmer" },
		     {	 0, 0, 0, 0 } },

	ran_abil[] = { {   1, &(HSearching), "", "" },
		     {	 7, &(HStealth), "stealthy", "" },
		     {	15, &(HSee_invisible), "", "" },
		     {	 0, 0, 0, 0 } },

	rog_abil[] = { {	 1, &(HStealth), "", ""  },
		     {  10, &(HSearching), "perceptive", "" },
		     {	 0, 0, 0, 0 } },

	sam_abil[] = { {	 1, &(HFast), "", "" },
		     {  15, &(HStealth), "stealthy", "" },
		     {	 0, 0, 0, 0 } },

	tou_abil[] = { {	10, &(HSearching), "perceptive", "" },
		     {	20, &(HPoison_resistance), "hardy", "" },
		     {	 0, 0, 0, 0 } },

	val_abil[] = { {	 1, &(HCold_resistance), "", "" },
		     {	 1, &(HStealth), "", "" },
		     {   7, &(HFast), "quick", "slow" },
		     {	 0, 0, 0, 0 } },

	wiz_abil[] = { {	15, &(HWarning), "sensitive", "" },
		     {  17, &(HTeleport_control), "controlled","uncontrolled" },
		     {	 0, 0, 0, 0 } },

	/* Intrinsics conferred by race */
	elf_abil[] = { {	4, &(HSleep_resistance), "awake", "tired" },
		     {	 0, 0, 0, 0 } },

	orc_abil[] = { {	1, &(HPoison_resistance), "", "" },
		     {	 0, 0, 0, 0 } };

STATIC_DCL void NDECL(exerper);
STATIC_DCL void FDECL(postadjabil, (long *));
STATIC_DCL const struct innate *FDECL(check_innate_abil,(long *, long));
STATIC_DCL int FDECL(innately, (long *));

/* adjust an attribute; return TRUE if change is made, FALSE otherwise */
boolean
adjattrib(ndx, incr, msgflg)
	int	ndx, incr;
	int	msgflg;	    /* positive => no message, zero => message, and */
{			    /* negative => conditional (msg if change made) */
	int old_acurr;
	boolean abonflg;
	const char *attrstr;

	if (Fixed_abil || !incr) return FALSE;

	if ((ndx == A_INT || ndx == A_WIS)
				&& uarmh && uarmh->otyp == DUNCE_CAP) {
		if (msgflg == 0)
		    Your("cap constricts briefly, then relaxes again.");
		return FALSE;
	}

	old_acurr = ACURR(ndx);
	if (incr > 0) {
	    ABASE(ndx) += incr;
	    if (ABASE(ndx) > AMAX(ndx)) {
		incr = ABASE(ndx) - AMAX(ndx);
		AMAX(ndx) += incr;
		if (AMAX(ndx) > ATTRMAX(ndx))
		    AMAX(ndx) = ATTRMAX(ndx);
		ABASE(ndx) = AMAX(ndx);
	    }
	    attrstr = plusattr[ndx];
	    abonflg = (ABON(ndx) < 0);
	} else {
	    ABASE(ndx) += incr;
	    if (ABASE(ndx) < ATTRMIN(ndx)) {
		incr = ABASE(ndx) - ATTRMIN(ndx);
		ABASE(ndx) = ATTRMIN(ndx);
		AMAX(ndx) += incr;
		if (AMAX(ndx) < ATTRMIN(ndx))
		    AMAX(ndx) = ATTRMIN(ndx);
	    }
	    attrstr = minusattr[ndx];
	    abonflg = (ABON(ndx) > 0);
	}
	if (ACURR(ndx) == old_acurr) {
	    if (msgflg == 0 && flags.verbose)
		pline("You're %s as %s as you can get.",
		      abonflg ? "currently" : "already", attrstr);
	    return FALSE;
	}

	if (msgflg <= 0)
	    You_feel("%s%s!",
		     (incr > 1 || incr < -1) ? "very ": "", attrstr);
	context.botl = 1;
	if (moves > 1 && (ndx == A_STR || ndx == A_CON))
		(void)encumber_msg();
	return TRUE;
}

void
gainstr(otmp, incr, givemsg)
struct obj *otmp;
int incr;
boolean givemsg;
{
	int num = incr;

	if (!num) {
	    if (ABASE(A_STR) < 18) num = (rn2(4) ? 1 : rnd(6));
	    else if (ABASE(A_STR) < STR18(85)) num = rnd(10);
	    else num = 1;
	}
	(void) adjattrib(A_STR, (otmp && otmp->cursed) ? -num : num,
			 givemsg ? -1 : 1);
}

void
losestr(num)	/* may kill you; cause may be poison or monster like 'a' */
	register int num;
{
	int ustr = ABASE(A_STR) - num;

	while(ustr < 3) {
	    ++ustr;
	    --num;
	    if (Upolyd) {
		u.mh -= 6;
		u.mhmax -= 6;
	    } else {
		u.uhp -= 6;
		u.uhpmax -= 6;
	    }
	}
	(void) adjattrib(A_STR, -num, 1);
}

static const struct poison_effect_message {
    void VDECL((*delivery_func), (const char *,...));
    const char *effect_msg;
} poiseff[] = {
    { You_feel,	"weaker" },			/* A_STR */
    { Your,	"brain is on fire" },		/* A_INT */
    { Your,	"judgement is impaired" },	/* A_WIS */
    { Your,	"muscles won't obey you" },	/* A_DEX */
    { You_feel,	"very sick" },			/* A_CON */
    { You,	"break out in hives" }		/* A_CHA */
};

/* feedback for attribute loss due to poisoning */
void
poisontell(typ, exclaim)
int typ;		/* which attribute */
boolean exclaim;	/* emphasis */
{
    void VDECL((*func), (const char *,...)) = poiseff[typ].delivery_func;

    (*func)("%s%c", poiseff[typ].effect_msg, exclaim ? '!' : '.');
}

/* called when an attack or trap has poisoned the hero (used to be in mon.c) */
void
poisoned(reason, typ, pkiller, fatal, thrown_weapon)
const char *reason,	/* controls what messages we display */
	   *pkiller;	/* for score+log file if fatal */
int  typ, fatal;		/* if fatal is 0, limit damage to adjattrib */
boolean thrown_weapon;	/* thrown weapons are less deadly */
{
	int i, loss, kprefix = KILLED_BY_AN;

	/* inform player about being poisoned unless that's already been done;
	   "blast" has given a "blast of poison gas" message; "poison arrow",
	   "poison dart", etc have implicitly given poison messages too... */
	if (strcmp(reason, "blast") && !strstri(reason, "poison")) {
	    boolean plural = (reason[strlen(reason) - 1] == 's') ? 1 : 0;

	    /* avoid "The" Orcus's sting was poisoned... */
	    pline("%s%s %s poisoned!",
		  isupper(*reason) ? "" : "The ", reason,
		  plural ? "were" : "was");
	}
	if (Poison_resistance) {
	    if (!strcmp(reason, "blast")) shieldeff(u.ux, u.uy);
	    pline_The("poison doesn't seem to affect you.");
	    return;
	}

	/* suppress killer prefix if it already has one */
	i = name_to_mon(pkiller);
	if (i >= LOW_PM && (mons[i].geno & G_UNIQ)) {
	    kprefix = KILLED_BY;
	    if (!type_is_pname(&mons[i])) pkiller = the(pkiller);
	} else if (!strncmpi(pkiller, "the ", 4) ||
		   !strncmpi(pkiller, "an ", 3) ||
		   !strncmpi(pkiller, "a ", 2)) {
	    /*[ does this need a plural check too? ]*/
	    kprefix = KILLED_BY;
	}

	i = !fatal ? 1 : rn2(fatal + (thrown_weapon ? 20 : 0));
	if (i == 0 && typ != A_CHA) {
	    /* instant kill */
	    u.uhp = -1;
	    pline_The("poison was deadly...");
	} else if (i > 5) {
	    /* HP damage; more likely--but less severe--with missiles */
	    loss = thrown_weapon ? rnd(6) : rn1(10,6);
	    losehp(loss, pkiller, kprefix);	/* poison damage */
	} else {
	    /* attribute loss; if typ is A_STR, reduction in current and
	       maximum HP will occur once strength has dropped down to 3 */
	    loss = (thrown_weapon || !fatal) ? 1 : d(2, 2); /* was rn1(3,3) */
	    /* check that a stat change was made */
	    if (adjattrib(typ, -loss, 1))
		poisontell(typ, TRUE);
	}

	if (u.uhp < 1) {
	    killer.format = kprefix;
	    Strcpy(killer.name, pkiller);
	    /* "Poisoned by a poisoned ___" is redundant */
	    done(strstri(pkiller, "poison") ? DIED : POISONING);
	}
	(void) encumber_msg();
}

void
change_luck(n)
	register schar n;
{
	u.uluck += n;
	if (u.uluck < 0 && u.uluck < LUCKMIN)	u.uluck = LUCKMIN;
	if (u.uluck > 0 && u.uluck > LUCKMAX)	u.uluck = LUCKMAX;
}

int
stone_luck(parameter)
boolean parameter; /* So I can't think up of a good name.  So sue me. --KAA */
{
	register struct obj *otmp;
	register long bonchance = 0;

	for (otmp = invent; otmp; otmp = otmp->nobj)
	    if (confers_luck(otmp)) {
		if (otmp->cursed) bonchance -= otmp->quan;
		else if (otmp->blessed) bonchance += otmp->quan;
		else if (parameter) bonchance += otmp->quan;
	    }

	return sgn((int)bonchance);
}

/* there has just been an inventory change affecting a luck-granting item */
void
set_moreluck()
{
	int luckbon = stone_luck(TRUE);

	if (!luckbon && !carrying(LUCKSTONE)) u.moreluck = 0;
	else if (luckbon >= 0) u.moreluck = LUCKADD;
	else u.moreluck = -LUCKADD;
}

void
restore_attrib()
{
	int	i;

	for(i = 0; i < A_MAX; i++) {	/* all temporary losses/gains */

	   if(ATEMP(i) && ATIME(i)) {
		if(!(--(ATIME(i)))) { /* countdown for change */
		    ATEMP(i) += ATEMP(i) > 0 ? -1 : 1;

		    if(ATEMP(i)) /* reset timer */
			ATIME(i) = 100 / ACURR(A_CON);
		}
	    }
	}
	(void)encumber_msg();
}

#define AVAL	50		/* tune value for exercise gains */

void
exercise(i, inc_or_dec)
int	i;
boolean	inc_or_dec;
{
	debugpline0("Exercise:");
	if (i == A_INT || i == A_CHA) return;	/* can't exercise these */

	/* no physical exercise while polymorphed; the body's temporary */
	if (Upolyd && i != A_WIS) return;

	if(abs(AEXE(i)) < AVAL) {
		/*
		 *	Law of diminishing returns (Part I):
		 *
		 *	Gain is harder at higher attribute values.
		 *	79% at "3" --> 0% at "18"
		 *	Loss is even at all levels (50%).
		 *
		 *	Note: *YES* ACURR is the right one to use.
		 */
		AEXE(i) += (inc_or_dec) ? (rn2(19) > ACURR(i)) : -rn2(2);
		debugpline3("%s, %s AEXE = %d",
			(i == A_STR) ? "Str" : (i == A_WIS) ? "Wis" :
			(i == A_DEX) ? "Dex" : "Con",
			(inc_or_dec) ? "inc" : "dec", AEXE(i));
	}
	if (moves > 0 && (i == A_STR || i == A_CON)) (void)encumber_msg();
}

/* hunger values - from eat.c */
#define SATIATED	0
#define NOT_HUNGRY	1
#define HUNGRY		2
#define WEAK		3
#define FAINTING	4
#define FAINTED		5
#define STARVED		6

STATIC_OVL void
exerper()
{
	if(!(moves % 10)) {
		/* Hunger Checks */

		int hs = (u.uhunger > 1000) ? SATIATED :
			 (u.uhunger > 150) ? NOT_HUNGRY :
			 (u.uhunger > 50) ? HUNGRY :
			 (u.uhunger > 0) ? WEAK : FAINTING;

		debugpline0("exerper: Hunger checks");
		switch (hs) {
		    case SATIATED:	exercise(A_DEX, FALSE);
					if (Role_if(PM_MONK))
					    exercise(A_WIS, FALSE);
					break;
		    case NOT_HUNGRY:	exercise(A_CON, TRUE); break;
		    case WEAK:		exercise(A_STR, FALSE);
					if (Role_if(PM_MONK))	/* fasting */
					    exercise(A_WIS, TRUE);
					break;
		    case FAINTING:
		    case FAINTED:	exercise(A_CON, FALSE); break;
		}

		/* Encumberance Checks */
		debugpline0("exerper: Encumber checks");
		switch (near_capacity()) {
		    case MOD_ENCUMBER:	exercise(A_STR, TRUE); break;
		    case HVY_ENCUMBER:	exercise(A_STR, TRUE);
					exercise(A_DEX, FALSE); break;
		    case EXT_ENCUMBER:	exercise(A_DEX, FALSE);
					exercise(A_CON, FALSE); break;
		}

	}

	/* status checks */
	if(!(moves % 5)) {
		debugpline0("exerper: Status checks");
		if ((HClairvoyant & (INTRINSIC|TIMEOUT)) &&
			!BClairvoyant)                      exercise(A_WIS, TRUE);
		if (HRegeneration)			exercise(A_STR, TRUE);

		if(Sick || Vomiting)     exercise(A_CON, FALSE);
		if(Confusion || Hallucination)		exercise(A_WIS, FALSE);
		if((Wounded_legs && !u.usteed) || Fumbling || HStun)
            exercise(A_DEX, FALSE);
	}
}

/* exercise/abuse text (must be in attribute order, not botl order);
   phrased as "You must have been [][0]." or "You haven't been [][1]." */
static NEARDATA const char * const exertext[A_MAX][2] = {
    { "exercising diligently", "exercising properly" },		    /* Str */
    { 0, 0 },							    /* Int */
    { "very observant", "paying attention" },			    /* Wis */
    { "working on your reflexes", "working on reflexes lately" },   /* Dex */
    { "leading a healthy life-style", "watching your health" },	    /* Con */
    { 0, 0 },							    /* Cha */
};

void
exerchk()
{
	int i, ax, mod_val, lolim, hilim;

	/*	Check out the periodic accumulations */
	exerper();

	if(moves >= context.next_attrib_check)
		debugpline1("exerchk: ready to test. multi = %d.", multi);
	/*	Are we ready for a test?	*/
	if(moves >= context.next_attrib_check && !multi) {
	    debugpline0("exerchk: testing.");
	    /*
	     *	Law of diminishing returns (Part II):
	     *
	     *	The effects of "exercise" and "abuse" wear
	     *	off over time.  Even if you *don't* get an
	     *	increase/decrease, you lose some of the
	     *	accumulated effects.
	     */
	    for (i = 0; i < A_MAX; ++i) {
		ax = AEXE(i);
		/* nothing to do here if no exercise or abuse has occurred
		   (Int and Cha always fall into this category) */
		if (!ax) continue;	/* ok to skip nextattrib */

		mod_val = sgn(ax);		/* +1 or -1; used below */
		/* no further effect for exercise if at max or abuse if at min;
		   can't exceed 18 via exercise even if actual max is higher */
		lolim = ATTRMIN(i);	/* usually 3; might be higher */
		hilim = ATTRMAX(i);	/* usually 18; maybe lower or higher */
		if (hilim > 18) hilim = 18;
		if ((ax < 0) ? (ABASE(i) <= lolim) : (ABASE(i) >= hilim))
		    goto nextattrib;
		/* can't exercise non-Wisdom while polymorphed; previous
		   exercise/abuse gradually wears off without impact then */
		if (Upolyd && i != A_WIS) goto nextattrib;

		debugpline2("exerchk: testing %s (%d).",
		      (i == A_STR) ? "Str" : (i == A_INT) ? "Int?" :
		       (i == A_WIS) ? "Wis" : (i == A_DEX) ? "Dex" :
			(i == A_CON) ? "Con" : (i == A_CHA) ? "Cha?" : "???",
		      ax);
		/*
		 *	Law of diminishing returns (Part III):
		 *
		 *	You don't *always* gain by exercising.
		 *	[MRS 92/10/28 - Treat Wisdom specially for balance.]
		 */
		if (rn2(AVAL) > ((i != A_WIS) ? (abs(ax) * 2 / 3) : abs(ax)))
		    goto nextattrib;

		debugpline1("exerchk: changing %d.", i);
		if(adjattrib(i, mod_val, -1)) {
		    debugpline1("exerchk: changed %d.", i);
		    /* if you actually changed an attrib - zero accumulation */
		    AEXE(i) = ax = 0;
		    /* then print an explanation */
		    You("%s %s.",
			(mod_val > 0) ? "must have been" : "haven't been",
			exertext[i][(mod_val > 0) ? 0 : 1]);
		}
 nextattrib:
		/* this used to be ``AEXE(i) /= 2'' but that would produce
		   platform-dependent rounding/truncation for negative vals */
		AEXE(i) = (abs(ax) / 2) * mod_val;
	    }
	    context.next_attrib_check += rn1(200,800);
	    debugpline1("exerchk: next check at %ld.",
			context.next_attrib_check);
	}
}

void
init_attr(np)
	register int	np;
{
	register int	i, x, tryct;


	for(i = 0; i < A_MAX; i++) {
	    ABASE(i) = AMAX(i) = urole.attrbase[i];
	    ATEMP(i) = ATIME(i) = 0;
	    np -= urole.attrbase[i];
	}

	tryct = 0;
	while(np > 0 && tryct < 100) {

	    x = rn2(100);
	    for (i = 0; (i < A_MAX) && ((x -= urole.attrdist[i]) > 0); i++) ;
	    if(i >= A_MAX) continue; /* impossible */

	    if(ABASE(i) >= ATTRMAX(i)) {

		tryct++;
		continue;
	    }
	    tryct = 0;
	    ABASE(i)++;
	    AMAX(i)++;
	    np--;
	}

	tryct = 0;
	while(np < 0 && tryct < 100) {		/* for redistribution */

	    x = rn2(100);
	    for (i = 0; (i < A_MAX) && ((x -= urole.attrdist[i]) > 0); i++) ;
	    if(i >= A_MAX) continue; /* impossible */

	    if(ABASE(i) <= ATTRMIN(i)) {

		tryct++;
		continue;
	    }
	    tryct = 0;
	    ABASE(i)--;
	    AMAX(i)--;
	    np++;
	}
}

void
redist_attr()
{
	register int i, tmp;

	for(i = 0; i < A_MAX; i++) {
	    if (i==A_INT || i==A_WIS) continue;
		/* Polymorphing doesn't change your mind */
	    tmp = AMAX(i);
	    AMAX(i) += (rn2(5)-2);
	    if (AMAX(i) > ATTRMAX(i)) AMAX(i) = ATTRMAX(i);
	    if (AMAX(i) < ATTRMIN(i)) AMAX(i) = ATTRMIN(i);
	    ABASE(i) = ABASE(i) * AMAX(i) / tmp;
	    /* ABASE(i) > ATTRMAX(i) is impossible */
	    if (ABASE(i) < ATTRMIN(i)) ABASE(i) = ATTRMIN(i);
	}
	(void)encumber_msg();
}

STATIC_OVL
void
postadjabil(ability)
long *ability;
{
	if (!ability) return;
	if (ability == &(HWarning) || ability == &(HSee_invisible))
		see_monsters();
}

STATIC_OVL const struct innate *
check_innate_abil(ability, frommask)
long *ability;
long frommask;
{
	const struct innate *abil = 0;

	if (frommask == FROMEXPER)
	switch (Role_switch) {
	case PM_ARCHEOLOGIST:   abil = arc_abil;	break;
	case PM_BARBARIAN:      abil = bar_abil;	break;
	case PM_CAVEMAN:        abil = cav_abil;	break;
	case PM_HEALER:         abil = hea_abil;	break;
	case PM_KNIGHT:         abil = kni_abil;	break;
	case PM_MONK:           abil = mon_abil;	break;
	case PM_PRIEST:         abil = pri_abil;	break;
	case PM_RANGER:         abil = ran_abil;	break;
	case PM_ROGUE:          abil = rog_abil;	break;
	case PM_SAMURAI:        abil = sam_abil;	break;
	case PM_TOURIST:        abil = tou_abil;	break;
	case PM_VALKYRIE:       abil = val_abil;	break;
	case PM_WIZARD:         abil = wiz_abil;	break;
	default:		break;
	}
	else if (frommask == FROMRACE)
	switch (Race_switch) {
	case PM_ELF:            abil = elf_abil;	break;
	case PM_ORC:            abil = orc_abil;	break;
	case PM_HUMAN:
	case PM_DWARF:
	case PM_GNOME:
	default:		break;
	}

	while (abil && abil->ability) {
	    if((abil->ability == ability) && (u.ulevel >= abil->ulevel))
		return abil;
	    abil++;
	}
	return (struct innate *)0;
}

/*
 * returns 1 if FROMRACE or FROMEXPER and exper level == 1
 * returns 2 if FROMEXPER and exper level > 1
 * otherwise returns 0
 */
STATIC_OVL int
innately(ability)
long *ability;
{
	const struct innate *iptr;

	if ((iptr = check_innate_abil(ability, FROMRACE)) != 0)
	    return 1;
	else if ((iptr = check_innate_abil(ability, FROMEXPER)) != 0)
	    return (iptr->ulevel == 1) ? 1 : 2;
	return 0;
}

int
is_innate(propidx)
int propidx;
{
	if (propidx == BLINDED && !haseyes(youmonst.data)) return 1;
	return innately(&u.uprops[propidx].intrinsic);
}

char *
from_what(propidx)
int propidx;	/* special cases can have negative values */
{
    static char buf[BUFSZ];

    buf[0] = '\0';
    /*
     * Restrict the source of the attributes just to debug mode for now
     */
    if (wizard) {
	static NEARDATA const char because_of[] = " because of %s";

	if (propidx >= 0) {
	    char *p;
	    struct obj *obj = (struct obj *)0;
	    int innate = is_innate(propidx);

	    if (innate == 2)
		Strcpy(buf, " because of your experience");
	    else if (innate == 1)
		Strcpy(buf, " innately");
	    else if (wizard && (obj = what_gives(&u.uprops[propidx].extrinsic)))
		Sprintf(buf, because_of,
			obj->oartifact ? bare_artifactname(obj) :
				ysimple_name(obj));
	    else if (propidx == BLINDED && u.uroleplay.blind)
		Sprintf(buf, " from birth");
	    else if (propidx == BLINDED && Blindfolded_only)
		Sprintf(buf, because_of, ysimple_name(ublindf));

	    /* remove some verbosity and/or redundancy */
	    if ((p = strstri(buf, " pair of ")) != 0)
		copynchars(p + 1, p + 9, BUFSZ); /* overlapping buffers ok */
	    else if (propidx == STRANGLED &&
		    (p = strstri(buf, " of strangulation")) != 0)
		*p = '\0';

	} else {	/* negative property index */
	    /* if more blocking capabilities get implemented we'll need to
	       replace this with what_blocks() comparable to what_gives() */
	    switch (-propidx) {
	    case BLINDED:
		if (ublindf && ublindf->oartifact == ART_EYES_OF_THE_OVERWORLD)
		    Sprintf(buf, because_of, bare_artifactname(ublindf));
		break;
	    case INVIS:
		if (u.uprops[INVIS].blocked & W_ARMC)
		    Sprintf(buf, because_of, ysimple_name(uarmc)); /* mummy wrapping */
		break;
	    case CLAIRVOYANT:
		if (wizard && (u.uprops[CLAIRVOYANT].blocked & W_ARMH))
		    Sprintf(buf, because_of, ysimple_name(uarmh)); /* cornuthaum */
		break;
	    }
	}

    } /*wizard*/
    return buf;
}

void
adjabil(oldlevel,newlevel)
int oldlevel, newlevel;
{
	register const struct innate *abil, *rabil;
	long prevabil, mask = FROMEXPER;

	switch (Role_switch) {
	case PM_ARCHEOLOGIST:   abil = arc_abil;	break;
	case PM_BARBARIAN:      abil = bar_abil;	break;
	case PM_CAVEMAN:        abil = cav_abil;	break;
	case PM_HEALER:         abil = hea_abil;	break;
	case PM_KNIGHT:         abil = kni_abil;	break;
	case PM_MONK:           abil = mon_abil;	break;
	case PM_PRIEST:         abil = pri_abil;	break;
	case PM_RANGER:         abil = ran_abil;	break;
	case PM_ROGUE:          abil = rog_abil;	break;
	case PM_SAMURAI:        abil = sam_abil;	break;
	case PM_TOURIST:        abil = tou_abil;	break;
	case PM_VALKYRIE:       abil = val_abil;	break;
	case PM_WIZARD:         abil = wiz_abil;	break;
	default:                abil = 0;		break;
	}

	switch (Race_switch) {
	case PM_ELF:            rabil = elf_abil;	break;
	case PM_ORC:            rabil = orc_abil;	break;
	case PM_HUMAN:
	case PM_DWARF:
	case PM_GNOME:
	default:                rabil = 0;		break;
	}

	while (abil || rabil) {
		/* Have we finished with the intrinsics list? */
		if (!abil || !abil->ability) {
			/* Try the race intrinsics */
			if (!rabil || !rabil->ability) break;
			abil = rabil;
			rabil = 0;
			mask = FROMRACE;
		}
		prevabil = *(abil->ability);
		if(oldlevel < abil->ulevel && newlevel >= abil->ulevel) {
			/* Abilities gained at level 1 can never be lost
			 * via level loss, only via means that remove _any_
			 * sort of ability.  A "gain" of such an ability from
			 * an outside source is devoid of meaning, so we set
			 * FROMOUTSIDE to avoid such gains.
			 */
			if (abil->ulevel == 1)
				*(abil->ability) |= (mask|FROMOUTSIDE);
			else
				*(abil->ability) |= mask;
			if(!(*(abil->ability) & INTRINSIC & ~mask)) {
			    if(*(abil->gainstr))
				You_feel("%s!", abil->gainstr);
			}
		} else if (oldlevel >= abil->ulevel && newlevel < abil->ulevel) {
			*(abil->ability) &= ~mask;
			if(!(*(abil->ability) & INTRINSIC)) {
			    if(*(abil->losestr))
				You_feel("%s!", abil->losestr);
			    else if(*(abil->gainstr))
				You_feel("less %s!", abil->gainstr);
			}
		}
	    if (prevabil != *(abil->ability))	/* it changed */
		postadjabil(abil->ability);
	    abil++;
	}

	if (oldlevel > 0) {
	    if (newlevel > oldlevel)
		add_weapon_skill(newlevel - oldlevel);
	    else
		lose_weapon_skill(oldlevel - newlevel);
	}
}


int
newhp()
{
	int	hp, conplus;

	if (u.ulevel == 0) {
	    /* Initialize hit points */
	    hp = urole.hpadv.infix + urace.hpadv.infix;
	    if (urole.hpadv.inrnd > 0) hp += rnd(urole.hpadv.inrnd);
	    if (urace.hpadv.inrnd > 0) hp += rnd(urace.hpadv.inrnd);
	    if (moves <= 1L) { /* initial hero; skip for polyself to new man */
		/* Initialize alignment stuff */
		u.ualign.type = aligns[flags.initalign].value;
		u.ualign.record = urole.initrecord;
	    }
	    /* no Con adjustment for initial hit points */
	} else {
	    if (u.ulevel < urole.xlev) {
		hp = urole.hpadv.lofix + urace.hpadv.lofix;
		if (urole.hpadv.lornd > 0) hp += rnd(urole.hpadv.lornd);
		if (urace.hpadv.lornd > 0) hp += rnd(urace.hpadv.lornd);
	    } else {
		hp = urole.hpadv.hifix + urace.hpadv.hifix;
		if (urole.hpadv.hirnd > 0) hp += rnd(urole.hpadv.hirnd);
		if (urace.hpadv.hirnd > 0) hp += rnd(urace.hpadv.hirnd);
	    }
	    if (ACURR(A_CON) <= 3) conplus = -2;
	    else if (ACURR(A_CON) <= 6) conplus = -1;
	    else if (ACURR(A_CON) <= 14) conplus = 0;
	    else if (ACURR(A_CON) <= 16) conplus = 1;
	    else if (ACURR(A_CON) == 17) conplus = 2;
	    else if (ACURR(A_CON) == 18) conplus = 3;
	    else conplus = 4;
	    hp += conplus;
	}
	if (hp <= 0) hp = 1;
	if (u.ulevel < MAXULEV) u.uhpinc[u.ulevel] = (xchar)hp;
	return hp;
}

schar
acurr(x)
int x;
{
	register int tmp = (u.abon.a[x] + u.atemp.a[x] + u.acurr.a[x]);

	if (x == A_STR) {
		if (uarmg && uarmg->otyp == GAUNTLETS_OF_POWER) return(125);
#ifdef WIN32_BUG
		else return(x=((tmp >= 125) ? 125 : (tmp <= 3) ? 3 : tmp));
#else
		else return((schar)((tmp >= 125) ? 125 : (tmp <= 3) ? 3 : tmp));
#endif
	} else if (x == A_CHA) {
		if (tmp < 18 && (youmonst.data->mlet == S_NYMPH ||
		    u.umonnum==PM_SUCCUBUS || u.umonnum == PM_INCUBUS))
		    return 18;
	} else if (x == A_INT || x == A_WIS) {
		/* yes, this may raise int/wis if player is sufficiently
		 * stupid.  there are lower levels of cognition than "dunce".
		 */
		if (uarmh && uarmh->otyp == DUNCE_CAP) return(6);
	}
#ifdef WIN32_BUG
	return(x=((tmp >= 25) ? 25 : (tmp <= 3) ? 3 : tmp));
#else
	return((schar)((tmp >= 25) ? 25 : (tmp <= 3) ? 3 : tmp));
#endif
}

/* condense clumsy ACURR(A_STR) value into value that fits into game formulas
 */
schar
acurrstr()
{
	register int str = ACURR(A_STR);

	if (str <= 18) return((schar)str);
	if (str <= 121) return((schar)(19 + str / 50)); /* map to 19-21 */
	else return((schar)(str - 100));
}

/* when wearing (or taking off) an unID'd item, this routine is used
   to distinguish between observable +0 result and no-visible-effect
   due to an attribute not being able to exceed maximum or minimun */
boolean
extremeattr(attrindx)	/* does attrindx's value match its max or min? */
int attrindx;
{
    /* Fixed_abil and racial MINATTR/MAXATTR aren't relevant here */
    int lolimit = 3, hilimit = 25, curval = ACURR(attrindx);

    /* upper limit for Str is 25 but its value is encoded differently */
    if (attrindx == A_STR) {
	hilimit = STR19(25);	/* 125 */
	/* lower limit for Str can also be 25 */
	if (uarmg && uarmg->otyp == GAUNTLETS_OF_POWER)
	    lolimit = hilimit;
    }
    /* this exception is hypothetical; the only other worn item affecting
       Int or Wis is another helmet so can't be in use at the same time */
    if (attrindx == A_INT || attrindx == A_WIS) {
	if (uarmh && uarmh->otyp == DUNCE_CAP)
	    hilimit = lolimit = 6;
    }

    /* are we currently at either limit? */
    return (curval == lolimit || curval == hilimit) ? TRUE : FALSE;
}

/* avoid possible problems with alignment overflow, and provide a centralized
 * location for any future alignment limits
 */
void
adjalign(n)
register int n;
{
	register int newalign = u.ualign.record + n;

	if(n < 0) {
		if(newalign < u.ualign.record)
			u.ualign.record = newalign;
	} else
		if(newalign > u.ualign.record) {
			u.ualign.record = newalign;
			if(u.ualign.record > ALIGNLIM)
				u.ualign.record = ALIGNLIM;
		}
}

/* change hero's alignment type, possibly losing use of artifacts */
void
uchangealign(newalign, reason)
int newalign;
int reason;	/* 0==conversion, 1==helm-of-OA on, 2==helm-of-OA off */
{
    aligntyp oldalign = u.ualign.type;

    u.ublessed = 0;		/* lose divine protection */
    context.botl = 1;		/* status line needs updating */
    if (reason == 0) {
	/* conversion via altar */
	u.ualignbase[A_CURRENT] = (aligntyp)newalign;
	/* worn helm of opposite alignment might block change */
	if (!uarmh || uarmh->otyp != HELM_OF_OPPOSITE_ALIGNMENT)
	    u.ualign.type = u.ualignbase[A_CURRENT];
	You("have a %ssense of a new direction.",
	    (u.ualign.type != oldalign) ? "sudden " : "");
    } else {
	/* putting on or taking off a helm of opposite alignment */
	u.ualign.type = (aligntyp)newalign;
	if (reason == 1)
	    Your("mind oscillates %s.", Hallucination ? "wildly" : "briefly");
	else if (reason == 2)
	    Your("mind is %s.", Hallucination ? "much of a muchness" :
		 "back in sync with your body");
    }

    if (u.ualign.type != oldalign) {
	u.ualign.record = 0;	/* slate is wiped clean */
	retouch_equipment(0);
    }
}

/*attrib.c*/