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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[] = "@(#)check.c 5.2 (Berkeley) 2/16/88";
- #endif /* not lint */
-
- #include "back.h"
-
- getmove () {
- register int i, c;
-
- c = 0;
- for (;;) {
- i = checkmove(c);
-
- switch (i) {
- case -1:
- if (movokay(mvlim)) {
- if (tflag)
- curmove (20,0);
- else
- writec ('\n');
- for (i = 0; i < mvlim; i++)
- if (h[i])
- wrhit(g[i]);
- nexturn();
- if (*offopp == 15)
- cturn *= -2;
- if (tflag && pnum)
- bflag = pnum;
- return;
- }
-
- case -4:
- case 0:
- if (tflag)
- refresh();
- if (i != 0 && i != -4)
- break;
- if (tflag)
- curmove (20,0);
- else
- writec ('\n');
- writel (*Colorptr);
- if (i == -4)
- writel (" must make ");
- else
- writel (" can only make ");
- writec (mvlim+'0');
- writel (" move");
- if (mvlim > 1)
- writec ('s');
- writec ('.');
- writec ('\n');
- break;
-
- case -3:
- if (quit())
- return;
- }
-
- if (! tflag)
- proll ();
- else {
- curmove (cturn == -1? 18: 19,39);
- cline ();
- c = -1;
- }
- }
- }
-
- movokay (mv)
- register int mv;
-
- {
- register int i, m;
-
- if (d0)
- swap;
-
- for (i = 0; i < mv; i++) {
-
- if (p[i] == g[i]) {
- moverr (i);
- curmove (20,0);
- writel ("Attempt to move to same location.\n");
- return (0);
- }
-
- if (cturn*(g[i]-p[i]) < 0) {
- moverr (i);
- curmove (20,0);
- writel ("Backwards move.\n");
- return (0);
- }
-
- if (abs(board[bar]) && p[i] != bar) {
- moverr (i);
- curmove (20,0);
- writel ("Men still on bar.\n");
- return (0);
- }
-
- if ( (m = makmove(i)) ) {
- moverr (i);
- switch (m) {
-
- case 1:
- writel ("Move not rolled.\n");
- break;
-
- case 2:
- writel ("Bad starting position.\n");
- break;
-
- case 3:
- writel ("Destination occupied.\n");
- break;
-
- case 4:
- writel ("Can't remove men yet.\n");
- }
- return (0);
- }
- }
- return (1);
- }
-