1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/* $OpenBSD: cards.c,v 1.7 2015/12/31 18:10:19 mestre Exp $ */
/* $NetBSD: cards.c,v 1.3 1995/03/21 15:08:41 cgd 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. 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 <stdlib.h>
#include "cribbage.h"
/*
* Initialize a deck of cards to contain one of each type.
*/
void
makedeck(CARD d[])
{
int i, j, k;
k = 0;
for (i = 0; i < RANKS; i++)
for (j = 0; j < SUITS; j++) {
d[k].suit = j;
d[k++].rank = i;
}
}
/*
* Given a deck of cards, shuffle it -- i.e. randomize it
* see Knuth, vol. 2, page 125.
*/
void
shuffle(CARD d[])
{
int j, k;
CARD c;
for (j = CARDS; j > 0; --j) {
k = arc4random_uniform(j); /* random 0 <= k < j */
c = d[j - 1]; /* exchange (j - 1) and k */
d[j - 1] = d[k];
d[k] = c;
}
}
/*
* return true if the two cards are equal...
*/
int
eq(CARD a, CARD b)
{
return ((a.rank == b.rank) && (a.suit == b.suit));
}
/*
* isone returns TRUE if a is in the set of cards b
*/
int
isone(CARD a, CARD b[], int n)
{
int i;
for (i = 0; i < n; i++)
if (eq(a, b[i]))
return (TRUE);
return (FALSE);
}
/*
* remove the card a from the deck d of n cards
*/
void
cremove(CARD a, CARD d[], int n)
{
int i, j;
for (i = j = 0; i < n; i++)
if (!eq(a, d[i]))
d[j++] = d[i];
if (j < n)
d[j].suit = d[j].rank = EMPTY;
}
/*
* sorthand:
* Sort a hand of n cards
*/
void
sorthand(CARD h[], int n)
{
CARD *cp, *endp;
CARD c;
for (endp = &h[n]; h < endp - 1; h++)
for (cp = h + 1; cp < endp; cp++)
if ((cp->rank < h->rank) ||
(cp->rank == h->rank && cp->suit < h->suit)) {
c = *h;
*h = *cp;
*cp = c;
}
}
|
