1 /* $OpenBSD: one.c,v 1.3 2001/06/23 23:50:03 pjanzen 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)one.c 8.1 (Berkeley) 5/31/93"; 39 #else 40 static char rcsid[] = "$OpenBSD: one.c,v 1.3 2001/06/23 23:50:03 pjanzen Exp $"; 41 #endif 42 #endif /* not lint */ 43 44 #include "back.h" 45 46 int 47 makmove(i) 48 int i; 49 { 50 int n, d; 51 int max; 52 53 d = d0; 54 n = abs(g[i] - p[i]); 55 max = (*offptr < 0 ? 7 : last()); 56 if (board[p[i]] * cturn <= 0) 57 return(checkd(d) + 2); 58 if (g[i] != home && board[g[i]] * cturn < -1) 59 return(checkd(d) + 3); 60 if (i || D0 == D1) { 61 if (n == max ? D1 < n : D1 != n) 62 return(checkd(d) + 1); 63 } else { 64 if (n == max ? D0 < n && D1 < n : D0 != n && D1 != n) 65 return(checkd(d) + 1); 66 if (n == max ? D0 < n : D0 != n) { 67 if (d0) 68 return (checkd(d) + 1); 69 swap; 70 } 71 } 72 if (g[i] == home && *offptr < 0) 73 return(checkd(d) + 4); 74 h[i] = 0; 75 board[p[i]] -= cturn; 76 if (g[i] != home) { 77 if (board[g[i]] == -cturn) { 78 board[home] -= cturn; 79 board[g[i]] = 0; 80 h[i] = 1; 81 if (abs(bar - g[i]) < 7) { 82 (*inopp)--; 83 if (*offopp >= 0) 84 *offopp -= 15; 85 } 86 } 87 board[g[i]] += cturn; 88 if (abs(home - g[i]) < 7 && abs(home - p[i]) > 6) { 89 (*inptr)++; 90 if (*inptr + *offptr == 0) 91 *offptr += 15; 92 } 93 } else { 94 (*offptr)++; 95 (*inptr)--; 96 } 97 return(0); 98 } 99 100 void 101 moverr(i) 102 int i; 103 { 104 int j; 105 106 mvprintw(20, 0, "Error: "); 107 for (j = 0; j <= i; j++) { 108 printw("%d-%d", p[j], g[j]); 109 if (j < i) 110 addch(','); 111 } 112 addstr("... "); 113 movback(i); 114 } 115 116 int 117 checkd(d) 118 int d; 119 { 120 if (d0 != d) 121 swap; 122 return(0); 123 } 124 125 int 126 last() 127 { 128 int i; 129 130 for (i = home - 6 * cturn; i != home; i += cturn) 131 if (board[i] * cturn > 0) 132 return(abs(home - i)); 133 return(-1); 134 } 135 136 void 137 movback(i) 138 int i; 139 { 140 int j; 141 142 for (j = i - 1; j >= 0; j--) 143 backone(j); 144 } 145 146 void 147 backone(i) 148 int i; 149 { 150 board[p[i]] += cturn; 151 if (g[i] != home) { 152 board[g[i]] -= cturn; 153 if (abs(g[i] - home) < 7 && abs(p[i] - home) > 6) { 154 (*inptr)--; 155 if (*inptr + *offptr < 15 && *offptr >= 0) 156 *offptr -= 15; 157 } 158 } else { 159 (*offptr)--; 160 (*inptr)++; 161 } 162 if (h[i]) { 163 board[home] += cturn; 164 board[g[i]] = -cturn; 165 if (abs(bar - g[i]) < 7) { 166 (*inopp)++; 167 if (*inopp + *offopp == 0) 168 *offopp += 15; 169 } 170 } 171 } 172