144 lines
3.4 KiB
C
144 lines
3.4 KiB
C
/* $NetBSD: cards.c,v 1.8 2005/07/02 08:32:32 jmc Exp $ */
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/*-
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)cards.c 8.1 (Berkeley) 5/31/93";
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#else
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__RCSID("$NetBSD: cards.c,v 1.8 2005/07/02 08:32:32 jmc Exp $");
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#endif
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#endif /* not lint */
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#include <curses.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include "deck.h"
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#include "cribbage.h"
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/*
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* Initialize a deck of cards to contain one of each type.
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*/
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void
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makedeck(CARD d[])
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{
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int i, j, k;
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i = time(NULL);
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i = ((i & 0xff) << 8) | ((i >> 8) & 0xff) | 1;
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srand(i);
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k = 0;
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for (i = 0; i < RANKS; i++)
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for (j = 0; j < SUITS; j++) {
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d[k].suit = j;
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d[k++].rank = i;
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}
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}
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/*
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* Given a deck of cards, shuffle it -- i.e. randomize it
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* see Knuth, vol. 2, page 125.
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*/
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void
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shuffle(CARD d[])
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{
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int j, k;
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CARD c;
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for (j = CARDS; j > 0; --j) {
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k = (rand() >> 4) % j; /* random 0 <= k < j */
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c = d[j - 1]; /* exchange (j - 1) and k */
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d[j - 1] = d[k];
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d[k] = c;
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}
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}
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/*
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* return true if the two cards are equal...
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*/
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int
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eq(CARD a, CARD b)
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{
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return ((a.rank == b.rank) && (a.suit == b.suit));
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}
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/*
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* is_one returns TRUE if a is in the set of cards b
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*/
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int
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is_one(CARD a, const CARD b[], int n)
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{
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int i;
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for (i = 0; i < n; i++)
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if (eq(a, b[i]))
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return (TRUE);
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return (FALSE);
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}
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/*
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* remove the card a from the deck d of n cards
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*/
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void
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cremove(CARD a, CARD d[], int n)
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{
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int i, j;
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for (i = j = 0; i < n; i++)
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if (!eq(a, d[i]))
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d[j++] = d[i];
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if (j < n)
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d[j].suit = d[j].rank = EMPTY;
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}
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/*
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* sorthand:
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* Sort a hand of n cards
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*/
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void
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sorthand(CARD h[], int n)
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{
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CARD *cp, *endp;
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CARD c;
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for (endp = &h[n]; h < endp - 1; h++)
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for (cp = h + 1; cp < endp; cp++)
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if ((cp->rank < h->rank) ||
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(cp->rank == h->rank && cp->suit < h->suit)) {
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c = *h;
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*h = *cp;
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*cp = c;
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}
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}
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