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NetBSD/games/cribbage/score.c
jsm b03d4fa882 Add __noreturn__' and __unused__' attributes where appropriate to 
the games.

This merges in all such remaining changes from the Linux port of the
NetBSD games, except in hunt (where substantial changes from OpenBSD
need to be looked at).

Most noreturn attributes were previously added in bin/6144, with some
others that were missed then in bin/8082.  Previous `unused'
attributes were covered in bin/6557, bin/8058 and other PRs (all these
PRs have already been handled and closed).
1999-09-08 21:45:25 +00:00

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/* $NetBSD: score.c,v 1.8 1999/09/08 21:45:26 jsm Exp $ */
/*-
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)score.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: score.c,v 1.8 1999/09/08 21:45:26 jsm Exp $");
#endif
#endif /* not lint */
#include <curses.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "deck.h"
#include "cribbage.h"
/*
* the following arrays give the sum of the scores of the (50 2)*48 = 58800
* hands obtainable for the crib given the two cards whose ranks index the
* array. the two arrays are for the case where the suits are equal and
* not equal respectively
*/
const long crbescr[169] = {
-10000, 271827, 278883, 332319, 347769, 261129, 250653, 253203, 248259,
243435, 256275, 237435, 231051, -10000, -10000, 412815, 295707, 349497,
267519, 262521, 259695, 254019, 250047, 262887, 244047, 237663, -10000,
-10000, -10000, 333987, 388629, 262017, 266787, 262971, 252729, 254475,
267315, 248475, 242091, -10000, -10000, -10000, -10000, 422097, 302787,
256437, 263751, 257883, 254271, 267111, 248271, 241887, -10000, -10000,
-10000, -10000, -10000, 427677, 387837, 349173, 347985, 423861, 436701,
417861, 411477, -10000, -10000, -10000, -10000, -10000, -10000, 336387,
298851, 338667, 236487, 249327, 230487, 224103, -10000, -10000, -10000,
-10000, -10000, -10000, -10000, 408483, 266691, 229803, 246195, 227355,
220971, -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000,
300675, 263787, 241695, 226407, 220023, -10000, -10000, -10000, -10000,
-10000, -10000, -10000, -10000, -10000, 295635, 273543, 219771, 216939,
-10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000,
-10000, 306519, 252747, 211431, -10000, -10000, -10000, -10000, -10000,
-10000, -10000, -10000, -10000, -10000, -10000, 304287, 262971, -10000,
-10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000,
-10000, -10000, 244131, -10000, -10000, -10000, -10000, -10000, -10000,
-10000, -10000, -10000, -10000, -10000, -10000, -10000
};
const long crbnescr[169] = {
325272, 260772, 267828, 321264, 336714, 250074, 239598, 242148, 237204,
232380, 246348, 226380, 219996, -10000, 342528, 401760, 284652, 338442,
256464, 251466, 248640, 242964, 238992, 252960, 232992, 226608, -10000,
-10000, 362280, 322932, 377574, 250962, 255732, 251916, 241674, 243420,
257388, 237420, 231036, -10000, -10000, -10000, 360768, 411042, 291732,
245382, 252696, 246828, 243216, 257184, 237216, 230832, -10000, -10000,
-10000, -10000, 528768, 416622, 376782, 338118, 336930, 412806, 426774,
406806, 400422, -10000, -10000, -10000, -10000, -10000, 369864, 325332,
287796, 327612, 225432, 239400, 219432, 213048, -10000, -10000, -10000,
-10000, -10000, -10000, 359160, 397428, 255636, 218748, 236268, 216300,
209916, -10000, -10000, -10000, -10000, -10000, -10000, -10000, 331320,
289620, 252732, 231768, 215352, 208968, -10000, -10000, -10000, -10000,
-10000, -10000, -10000, -10000, 325152, 284580, 263616, 208716, 205884,
-10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000,
321240, 296592, 241692, 200376, -10000, -10000, -10000, -10000, -10000,
-10000, -10000, -10000, -10000, -10000, 348600, 294360, 253044, -10000,
-10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000, -10000,
-10000, 308664, 233076, -10000, -10000, -10000, -10000, -10000, -10000,
-10000, -10000, -10000, -10000, -10000, -10000, 295896
};
static const int ichoose2[5] = { 0, 0, 2, 6, 12 };
static int pairpoints, runpoints; /* Globals from pairuns. */
/*
* scorehand:
* Score the given hand of n cards and the starter card.
* n must be <= 4
*/
int
scorehand(hand, starter, n, crb, do_explain)
const CARD hand[];
CARD starter;
int n;
BOOLEAN crb; /* true if scoring crib */
BOOLEAN do_explain; /* true if must explain this hand */
{
int i, k;
int score;
BOOLEAN flag;
CARD h[(CINHAND + 1)];
char buf[32];
expl[0] = '\0'; /* initialize explanation */
score = 0;
flag = TRUE;
k = hand[0].suit;
for (i = 0; i < n; i++) { /* check for flush */
flag = (flag && (hand[i].suit == k));
if (hand[i].rank == JACK) /* check for his nibs */
if (hand[i].suit == starter.suit) {
score++;
if (do_explain)
strcat(expl, "His Nobs");
}
h[i] = hand[i];
}
if (flag && n >= CINHAND) {
if (do_explain && expl[0] != '\0')
strcat(expl, ", ");
if (starter.suit == k) {
score += 5;
if (do_explain)
strcat(expl, "Five-flush");
} else
if (!crb) {
score += 4;
if (do_explain && expl[0] != '\0')
strcat(expl, ", Four-flush");
else
strcpy(expl, "Four-flush");
}
}
if (do_explain && expl[0] != '\0')
strcat(expl, ", ");
h[n] = starter;
sorthand(h, n + 1); /* sort by rank */
i = 2 * fifteens(h, n + 1);
score += i;
if (do_explain) {
if (i > 0) {
(void) sprintf(buf, "%d points in fifteens", i);
strcat(expl, buf);
} else
strcat(expl, "No fifteens");
}
i = pairuns(h, n + 1);
score += i;
if (do_explain) {
if (i > 0) {
(void) sprintf(buf, ", %d points in pairs, %d in runs",
pairpoints, runpoints);
strcat(expl, buf);
} else
strcat(expl, ", No pairs/runs");
}
return (score);
}
/*
* fifteens:
* Return number of fifteens in hand of n cards
*/
int
fifteens(hand, n)
const CARD hand[];
int n;
{
int *sp, *np;
int i;
const CARD *endp;
static int sums[15], nsums[15];
np = nsums;
sp = sums;
i = 16;
while (--i) {
*np++ = 0;
*sp++ = 0;
}
for (endp = &hand[n]; hand < endp; hand++) {
i = hand->rank + 1;
if (i > 10)
i = 10;
np = &nsums[i];
np[-1]++; /* one way to make this */
sp = sums;
while (i < 15) {
*np++ += *sp++;
i++;
}
sp = sums;
np = nsums;
i = 16;
while (--i)
*sp++ = *np++;
}
return sums[14];
}
/*
* pairuns returns the number of points in the n card sorted hand
* due to pairs and runs
* this routine only works if n is strictly less than 6
* sets the globals pairpoints and runpoints appropriately
*/
int
pairuns(h, n)
const CARD h[];
int n;
{
int i;
int runlength, runmult, lastmult, curmult;
int mult1, mult2, pair1, pair2;
BOOLEAN run;
run = TRUE;
runlength = 1;
mult1 = 1;
pair1 = -1;
mult2 = 1;
pair2 = -1;
curmult = runmult = 1;
for (i = 1; i < n; i++) {
lastmult = curmult;
if (h[i].rank == h[i - 1].rank) {
if (pair1 < 0) {
pair1 = h[i].rank;
mult1 = curmult = 2;
} else {
if (h[i].rank == pair1) {
curmult = ++mult1;
} else {
if (pair2 < 0) {
pair2 = h[i].rank;
mult2 = curmult = 2;
} else {
curmult = ++mult2;
}
}
}
if (i == (n - 1) && run) {
runmult *= curmult;
}
} else {
curmult = 1;
if (h[i].rank == h[i - 1].rank + 1) {
if (run) {
++runlength;
} else {
/* only if old short */
if (runlength < 3) {
run = TRUE;
runlength = 2;
runmult = 1;
}
}
runmult *= lastmult;
} else {
/* if just ended */
if (run)
runmult *= lastmult;
run = FALSE;
}
}
}
pairpoints = ichoose2[mult1] + ichoose2[mult2];
runpoints = (runlength >= 3 ? runlength * runmult : 0);
return (pairpoints + runpoints);
}
/*
* pegscore tells how many points crd would get if played after
* the n cards in tbl during pegging
*/
int
pegscore(crd, tbl, n, sum)
CARD crd;
const CARD tbl[];
int n, sum;
{
BOOLEAN got[RANKS];
int i, j, scr;
int k, lo, hi;
sum += VAL(crd.rank);
if (sum > 31)
return (-1);
if (sum == 31 || sum == 15)
scr = 2;
else
scr = 0;
if (!n)
return (scr);
j = 1;
while ((crd.rank == tbl[n - j].rank) && (n - j >= 0))
++j;
if (j > 1)
return (scr + ichoose2[j]);
if (n < 2)
return (scr);
lo = hi = crd.rank;
for (i = 0; i < RANKS; i++)
got[i] = FALSE;
got[crd.rank] = TRUE;
k = -1;
for (i = n - 1; i >= 0; --i) {
if (got[tbl[i].rank])
break;
got[tbl[i].rank] = TRUE;
if (tbl[i].rank < lo)
lo = tbl[i].rank;
if (tbl[i].rank > hi)
hi = tbl[i].rank;
for (j = lo; j <= hi; j++)
if (!got[j])
break;
if (j > hi)
k = hi - lo + 1;
}
if (k >= 3)
return (scr + k);
else
return (scr);
}
/*
* adjust takes a two card hand that will be put in the crib
* and returns an adjusted normalized score for the number of
* points such a crib will get.
*/
int
adjust(cb, tnv)
const CARD cb[];
CARD tnv __attribute__((__unused__));
{
long scr;
int i, c0, c1;
c0 = cb[0].rank;
c1 = cb[1].rank;
if (c0 > c1) {
i = c0;
c0 = c1;
c1 = i;
}
if (cb[0].suit != cb[1].suit)
scr = crbnescr[RANKS * c0 + c1];
else
scr = crbescr[RANKS * c0 + c1];
if (scr <= 0) {
printf("\nADJUST: internal error %d %d\n", c0, c1);
exit(93);
}
return ((scr + 29400) / 58800);
}
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