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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that this notice is preserved and that due credit is given
- * to the University of California at Berkeley. The name of the University
- * may not be used to endorse or promote products derived from this
- * software without specific prior written permission. This software
- * is provided ``as is'' without express or implied warranty.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)one.c 5.2 (Berkeley) 2/16/88";
- #endif /* not lint */
-
- #include "back.h"
-
- makmove (i)
- register int i;
-
- {
- register int n, d;
- int max;
-
- d = d0;
- n = abs(g[i]-p[i]);
- max = (*offptr < 0? 7: last());
- if (board[p[i]]*cturn <= 0)
- return (checkd(d)+2);
- if (g[i] != home && board[g[i]]*cturn < -1)
- return (checkd(d)+3);
- if (i || D0 == D1) {
- if (n == max? D1 < n: D1 != n)
- return (checkd(d)+1);
- } else {
- if (n == max? D0 < n && D1 < n: D0 != n && D1 != n)
- return (checkd(d)+1);
- if (n == max? D0 < n: D0 != n) {
- if (d0)
- return (checkd(d)+1);
- swap;
- }
- }
- if (g[i] == home && *offptr < 0)
- return (checkd(d)+4);
- h[i] = 0;
- board[p[i]] -= cturn;
- if (g[i] != home) {
- if (board[g[i]] == -cturn) {
- board[home] -= cturn;
- board[g[i]] = 0;
- h[i] = 1;
- if (abs(bar-g[i]) < 7) {
- (*inopp)--;
- if (*offopp >= 0)
- *offopp -= 15;
- }
- }
- board[g[i]] += cturn;
- if (abs(home-g[i]) < 7 && abs(home-p[i]) > 6) {
- (*inptr)++;
- if (*inptr+*offptr == 0)
- *offptr += 15;
- }
- } else {
- (*offptr)++;
- (*inptr)--;
- }
- return (0);
- }
-
- moverr (i)
- register int i;
-
- {
- register int j;
-
- if (tflag)
- curmove (20,0);
- else
- writec ('\n');
- writel ("Error: ");
- for (j = 0; j <= i; j++) {
- wrint (p[j]);
- writec ('-');
- wrint (g[j]);
- if (j < i)
- writec (',');
- }
- writel ("... ");
- movback (i);
- }
-
-
- checkd (d)
- register int d;
-
- {
- if (d0 != d)
- swap;
- return (0);
- }
-
- last () {
- register int i;
-
- for (i = home-6*cturn; i != home; i += cturn)
- if (board[i]*cturn > 0)
- return (abs(home-i));
- }
-
- movback (i)
- register int i;
-
- {
- register int j;
-
- for (j = i-1; j >= 0; j--)
- backone(j);
- }
-
- backone (i)
- register int i;
-
- {
- board[p[i]] += cturn;
- if (g[i] != home) {
- board[g[i]] -= cturn;
- if (abs(g[i]-home) < 7 && abs(p[i]-home) > 6) {
- (*inptr)--;
- if (*inptr+*offptr < 15 && *offptr >= 0)
- *offptr -= 15;
- }
- } else {
- (*offptr)--;
- (*inptr)++;
- }
- if (h[i]) {
- board[home] += cturn;
- board[g[i]] = -cturn;
- if (abs(bar-g[i]) < 7) {
- (*inopp)++;
- if (*inopp+*offopp == 0)
- *offopp += 15;
- }
- }
- }
-