1 /* $OpenBSD: check.c,v 1.7 2015/11/30 08:19:25 tb Exp $ */
2
3 /*
4 * Copyright (c) 1980, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include "back.h"
33
34 void
getmove(void)35 getmove(void)
36 {
37 int i, c;
38
39 c = 0;
40 for (;;) {
41 i = checkmove(c);
42
43 switch (i) {
44 case -1:
45 if (movokay(mvlim)) {
46 move(20, 0);
47 for (i = 0; i < mvlim; i++)
48 if (h[i])
49 wrhit(g[i]);
50 nexturn();
51 if (*offopp == 15)
52 cturn *= -2;
53 return;
54 }
55 case -4:
56 case 0:
57 refresh();
58 if (i != 0 && i != -4)
59 break;
60 mvaddstr(20, 0, *Colorptr);
61 if (i == -4)
62 addstr(" must make ");
63 else
64 addstr(" can only make ");
65 printw("%d move%s.\n", mvlim, mvlim > 1 ? "s":"");
66 break;
67
68 case -3:
69 if (quit())
70 return;
71 }
72
73 move(cturn == -1 ? 18 : 19, 39);
74 clrtoeol();
75 c = -1;
76 }
77 }
78
79 int
movokay(int mv)80 movokay(int mv)
81 {
82 int i, m;
83
84 if (d0)
85 swap;
86
87 for (i = 0; i < mv; i++) {
88 if (p[i] == g[i]) {
89 moverr(i);
90 mvaddstr(20, 0, "Attempt to move to same location.\n");
91 return(0);
92 }
93 if (cturn * (g[i] - p[i]) < 0) {
94 moverr(i);
95 mvaddstr(20, 0, "Backwards move.\n");
96 return(0);
97 }
98 if (abs(board[bar]) && p[i] != bar) {
99 moverr(i);
100 mvaddstr(20, 0, "Men still on bar.\n");
101 return(0);
102 }
103 if ((m = makmove(i))) {
104 moverr(i);
105 switch (m) {
106 case 1:
107 addstr("Move not rolled.\n");
108 break;
109
110 case 2:
111 addstr("Bad starting position.\n");
112 break;
113
114 case 3:
115 addstr("Destination occupied.\n");
116 break;
117
118 case 4:
119 addstr("Can't remove men yet.\n");
120 }
121 return(0);
122 }
123 }
124 return(1);
125 }
126