Pass the move info around instead of using it as a global.

8 files changed, 105 insertions, 111 deletions

diff --git a/backgammon/common_source/allow.c b/backgammon/common_source/allow.c
index 2c0428d4..0cd24da2 100644
--- a/backgammon/common_source/allow.c
+++ b/backgammon/common_source/allow.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: allow.c,v 1.7 2012/10/13 18:44:14 dholland Exp $	*/
+/*	$NetBSD: allow.c,v 1.8 2012/10/13 19:19:38 dholland Exp $	*/
 
 /*
  * Copyright (c) 1980, 1993
@@ -34,18 +34,17 @@
 #if 0
 static char sccsid[] = "@(#)allow.c	8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: allow.c,v 1.7 2012/10/13 18:44:14 dholland Exp $");
+__RCSID("$NetBSD: allow.c,v 1.8 2012/10/13 19:19:38 dholland Exp $");
 #endif
 #endif /* not lint */
 
 #include "back.h"
 
 int
-movallow(void)
+movallow(struct move *mm)
 {
 	int     i, m, iold;
 	int     r;
-	struct move *mm = &gm;
 
 	if (mm->d0)
 		mswap(mm);
@@ -62,11 +61,11 @@ movallow(void)
 				mm->g[i] = bar + cturn * mm->D1;
 			else
 				mm->g[i] = bar + cturn * mm->D0;
-			if ((r = makmove(i)) != 0) {
+			if ((r = makmove(mm, i)) != 0) {
 				if (mm->d0 || m == 4)
 					break;
 				mswap(mm);
-				movback(i);
+				movback(mm, i);
 				if (i > iold)
 					iold = i;
 				for (i = 0; i < 4; i++)
@@ -80,7 +79,7 @@ movallow(void)
 			if (i > iold)
 				iold = i;
 			if (m == 2 && i) {
-				movback(i);
+				movback(mm, i);
 				mm->p[i--] = bar;
 				if (mm->p[i] != bar)
 					continue;
@@ -90,7 +89,7 @@ movallow(void)
 			if (mm->d0 || m == 4)
 				break;
 			mswap(mm);
-			movback(i);
+			movback(mm, i);
 			for (i = 0; i < 4; i++)
 				mm->p[i] = bar;
 			i = 0;
@@ -106,9 +105,9 @@ movallow(void)
 			else
 				continue;
 		}
-		if (board[mm->p[i]] * cturn > 0 && (r = makmove(i)) == 0)
+		if (board[mm->p[i]] * cturn > 0 && (r = makmove(mm, i)) == 0)
 			i++;
 	}
-	movback(i);
+	movback(mm, i);
 	return (iold > i ? iold : i);
 }
diff --git a/backgammon/common_source/back.h b/backgammon/common_source/back.h
index e008a6f9..7c333365 100644
--- a/backgammon/common_source/back.h
+++ b/backgammon/common_source/back.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: back.h,v 1.19 2012/10/13 18:44:14 dholland Exp $	*/
+/*	$NetBSD: back.h,v 1.20 2012/10/13 19:19:39 dholland Exp $	*/
 
 /*
  * Copyright (c) 1980, 1993
@@ -46,8 +46,7 @@
 #define rnum(r)	(random()%r)
 #define D0	dice[0]
 #define D1	dice[1]
-#define mswap(m)	{(m)->D0 ^= (m)->D1; (m)->D1 ^= (m)->D0; (m)->D0 ^= (m)->D1; (m)->d0 = 1-(m)->d0;}
-#define swap	suck it
+#define mswap(m) {(m)->D0 ^= (m)->D1; (m)->D1 ^= (m)->D0; (m)->D0 ^= (m)->D1; (m)->d0 = 1-(m)->d0;}
 
 struct move {
 	int	dice[2];	/* value of dice */
@@ -59,8 +58,6 @@ struct move {
 				   original position */
 };
 
-extern struct move gm;
-
 /*
  *
  * Some numerical conventions:
@@ -135,10 +132,10 @@ extern	int	begscr;		/* 'beginning' of screen
 				   (not including board) */
 
 int	addbuf(int);
-void	backone(int);
+void	backone(struct move *, int);
 void	buflush(void);
 int	canhit(int, int);
-int	checkmove(int);
+int	checkmove(struct move *, int);
 void	clear(void);
 void	clend(void);
 void	cline(void);
@@ -148,28 +145,28 @@ void	errexit(const char *) __dead;
 void	fancyc(int);
 void	fboard(void);
 void	fixtty(struct termios *);
-void	getarg(char ***);
+void	getarg(struct move *, char ***);
 int	getcaps(const char *);
-void	getmove(void);
+void	getmove(struct move *);
 void	getout(int) __dead;
 void	gwrite(void);
 void	init(void);
 int	main(int, char *[]);
-int	makmove(int);
-int	movallow(void);
-void	movback(int);
-void	moverr(int);
-int	movokay(int);
+int	makmove(struct move *, int);
+int	movallow(struct move *);
+void	movback(struct move *, int);
+void	moverr(struct move *, int);
+int	movokay(struct move *, int);
 void	newpos(void);
 void	nexturn(void);
 void	odds(int, int, int);
-void	proll(void);
-int	quit(void);
+void	proll(struct move *);
+int	quit(struct move *);
 int	readc(void);
-void	recover(const char *);
+void	recover(struct move *, const char *);
 void	refresh(void);
-void	roll(void);
-void	save(int);
+void	roll(struct move *);
+void	save(struct move *, int);
 int	wrtext(const char *const *);
 void	wrboard(void);
 void	wrhit(int);
@@ -178,3 +175,5 @@ void	writec(int);
 void	writel(const char *);
 void	wrscore(void);
 int	yorn(int);
+
+void move_init(struct move *);
diff --git a/backgammon/common_source/check.c b/backgammon/common_source/check.c
index 19f1c56d..c3f85251 100644
--- a/backgammon/common_source/check.c
+++ b/backgammon/common_source/check.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: check.c,v 1.7 2012/10/13 18:44:15 dholland Exp $	*/
+/*	$NetBSD: check.c,v 1.8 2012/10/13 19:19:39 dholland Exp $	*/
 
 /*
  * Copyright (c) 1980, 1993
@@ -34,25 +34,24 @@
 #if 0
 static char sccsid[] = "@(#)check.c	8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: check.c,v 1.7 2012/10/13 18:44:15 dholland Exp $");
+__RCSID("$NetBSD: check.c,v 1.8 2012/10/13 19:19:39 dholland Exp $");
 #endif
 #endif /* not lint */
 
 #include "back.h"
 
 void
-getmove(void)
+getmove(struct move *mm)
 {
 	int     i, c;
-	struct move *mm = &gm;
 
 	c = 0;
 	for (;;) {
-		i = checkmove(c);
+		i = checkmove(mm, c);
 
 		switch (i) {
 		case -1:
-			if (movokay(mm->mvlim)) {
+			if (movokay(mm, mm->mvlim)) {
 				if (tflag)
 					curmove(20, 0);
 				else
@@ -91,12 +90,12 @@ getmove(void)
 			break;
 
 		case -3:
-			if (quit())
+			if (quit(mm))
 				return;
 		}
 
 		if (!tflag)
-			proll();
+			proll(mm);
 		else {
 			curmove(cturn == -1 ? 18 : 19, 39);
 			cline();
@@ -106,35 +105,34 @@ getmove(void)
 }
 
 int
-movokay(int mv)
+movokay(struct move *mm, int mv)
 {
 	int     i, m;
-	struct move *mm = &gm;
 
 	if (mm->d0)
 		mswap(mm);
 
 	for (i = 0; i < mv; i++) {
 		if (mm->p[i] == mm->g[i]) {
-			moverr(i);
+			moverr(mm, i);
 			curmove(20, 0);
 			writel("Attempt to move to same location.\n");
 			return (0);
 		}
 		if (cturn * (mm->g[i] - mm->p[i]) < 0) {
-			moverr(i);
+			moverr(mm, i);
 			curmove(20, 0);
 			writel("Backwards move.\n");
 			return (0);
 		}
 		if (abs(board[bar]) && mm->p[i] != bar) {
-			moverr(i);
+			moverr(mm, i);
 			curmove(20, 0);
 			writel("Men still on bar.\n");
 			return (0);
 		}
-		if ((m = makmove(i))) {
-			moverr(i);
+		if ((m = makmove(mm, i))) {
+			moverr(mm, i);
 			switch (m) {
 
 			case 1:
diff --git a/backgammon/common_source/init.c b/backgammon/common_source/init.c
index 5cdbfb36..648515f2 100644
--- a/backgammon/common_source/init.c
+++ b/backgammon/common_source/init.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: init.c,v 1.9 2012/10/13 18:44:15 dholland Exp $	*/
+/*	$NetBSD: init.c,v 1.10 2012/10/13 19:19:39 dholland Exp $	*/
 
 /*
  * Copyright (c) 1980, 1993
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)init.c	8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: init.c,v 1.9 2012/10/13 18:44:15 dholland Exp $");
+__RCSID("$NetBSD: init.c,v 1.10 2012/10/13 19:19:39 dholland Exp $");
 #endif
 #endif /* not lint */
 
@@ -93,3 +93,15 @@ int	rscore;
 int	table[6][6];
 int	wscore;
 struct termios	old, noech, raw;
+
+void
+move_init(struct move *mm)
+{
+	mm->D0 = 0;
+	mm->D1 = 0;
+	mm->mvlim = 0;
+	mm->p[0] = mm->p[1] = mm->p[2] = mm->p[3] = mm->p[4] = 0;
+	mm->g[0] = mm->g[1] = mm->g[2] = mm->g[3] = mm->g[4] = 0;
+	mm->h[0] = mm->h[1] = mm->h[2] = mm->h[3] = 0;
+	mm->d0 = 0;
+}
diff --git a/backgammon/common_source/one.c b/backgammon/common_source/one.c
index 507af18f..3e55dd83 100644
--- a/backgammon/common_source/one.c
+++ b/backgammon/common_source/one.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: one.c,v 1.8 2012/10/13 18:44:15 dholland Exp $	*/
+/*	$NetBSD: one.c,v 1.9 2012/10/13 19:19:39 dholland Exp $	*/
 
 /*
  * Copyright (c) 1980, 1993
@@ -34,43 +34,42 @@
 #if 0
 static char sccsid[] = "@(#)one.c	8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: one.c,v 1.8 2012/10/13 18:44:15 dholland Exp $");
+__RCSID("$NetBSD: one.c,v 1.9 2012/10/13 19:19:39 dholland Exp $");
 #endif
 #endif /* not lint */
 
 #include "back.h"
 
-static int checkd(int);
+static int checkd(struct move *, int);
 static int last(void);
 
 int
-makmove(int i)
+makmove(struct move *mm, int i)
 {
 	int     n, d;
 	int     max;
-	struct move *mm = &gm;
 
 	d = mm->d0;
 	n = abs(mm->g[i] - mm->p[i]);
 	max = (*offptr < 0 ? 7 : last());
 	if (board[mm->p[i]] * cturn <= 0)
-		return (checkd(d) + 2);
+		return (checkd(mm, d) + 2);
 	if (mm->g[i] != home && board[mm->g[i]] * cturn < -1)
-		return (checkd(d) + 3);
+		return (checkd(mm, d) + 3);
 	if (i || mm->D0 == mm->D1) {
 		if (n == max ? mm->D1 < n : mm->D1 != n)
-			return (checkd(d) + 1);
+			return (checkd(mm, d) + 1);
 	} else {
 		if (n == max ? mm->D0 < n && mm->D1 < n : mm->D0 != n && mm->D1 != n)
-			return (checkd(d) + 1);
+			return (checkd(mm, d) + 1);
 		if (n == max ? mm->D0 < n : mm->D0 != n) {
 			if (mm->d0)
-				return (checkd(d) + 1);
+				return (checkd(mm, d) + 1);
 			mswap(mm);
 		}
 	}
 	if (mm->g[i] == home && *offptr < 0)
-		return (checkd(d) + 4);
+		return (checkd(mm, d) + 4);
 	mm->h[i] = 0;
 	board[mm->p[i]] -= cturn;
 	if (mm->g[i] != home) {
@@ -98,10 +97,9 @@ makmove(int i)
 }
 
 void
-moverr(int i)
+moverr(struct move *mm, int i)
 {
 	int     j;
-	struct move *mm = &gm;
 
 	if (tflag)
 		curmove(20, 0);
@@ -116,15 +114,13 @@ moverr(int i)
 			writec(',');
 	}
 	writel("... ");
-	movback(i);
+	movback(mm, i);
 }
 
 
 static int
-checkd(int d)
+checkd(struct move *mm, int d)
 {
-	struct move *mm = &gm;
-
 	if (mm->d0 != d)
 		mswap(mm);
 	return (0);
@@ -142,19 +138,17 @@ last(void)
 }
 
 void
-movback(int i)
+movback(struct move *mm, int i)
 {
 	int     j;
 
 	for (j = i - 1; j >= 0; j--)
-		backone(j);
+		backone(mm, j);
 }
 
 void
-backone(int i)
+backone(struct move *mm, int i)
 {
-	struct move *mm = &gm;
-
 	board[mm->p[i]] += cturn;
 	if (mm->g[i] != home) {
 		board[mm->g[i]] -= cturn;
diff --git a/backgammon/common_source/save.c b/backgammon/common_source/save.c
index 5cadf51c..462050af 100644
--- a/backgammon/common_source/save.c
+++ b/backgammon/common_source/save.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: save.c,v 1.15 2012/10/13 18:44:15 dholland Exp $	*/
+/*	$NetBSD: save.c,v 1.16 2012/10/13 19:19:39 dholland Exp $	*/
 
 /*
  * Copyright (c) 1980, 1993
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)save.c	8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: save.c,v 1.15 2012/10/13 18:44:15 dholland Exp $");
+__RCSID("$NetBSD: save.c,v 1.16 2012/10/13 19:19:39 dholland Exp $");
 #endif
 #endif /* not lint */
 
@@ -56,12 +56,11 @@ static const char cantrec[] = "Can't recover file:  ";
 static void norec(const char *) __dead;
 
 void
-save(int n)
+save(struct move *mm, int n)
 {
 	int     fdesc;
 	char   *fs;
 	char    fname[50];
-	struct move *mm = &gm;
 
 	if (n) {
 		if (tflag) {
@@ -146,10 +145,9 @@ save(int n)
 }
 
 void
-recover(const char *s)
+recover(struct move *mm, const char *s)
 {
 	int     fdesc;
-	struct move *mm = &gm;
 
 	if ((fdesc = open(s, O_RDONLY)) == -1)
 		norec(s);
diff --git a/backgammon/common_source/subs.c b/backgammon/common_source/subs.c
index e73f5339..9a0a3723 100644
--- a/backgammon/common_source/subs.c
+++ b/backgammon/common_source/subs.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: subs.c,v 1.18 2012/10/13 18:44:15 dholland Exp $	*/
+/*	$NetBSD: subs.c,v 1.19 2012/10/13 19:19:39 dholland Exp $	*/
 
 /*
  * Copyright (c) 1980, 1993
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)subs.c	8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: subs.c,v 1.18 2012/10/13 18:44:15 dholland Exp $");
+__RCSID("$NetBSD: subs.c,v 1.19 2012/10/13 19:19:39 dholland Exp $");
 #endif
 #endif /* not lint */
 
@@ -153,10 +153,8 @@ writel(const char *l)
 }
 
 void
-proll(void)
+proll(struct move *mm)
 {
-	struct move *mm = &gm;
-
 	if (mm->d0)
 		mswap(mm);
 	if (cturn == 1)
@@ -229,7 +227,7 @@ gwrite(void)
 }
 
 int
-quit(void)
+quit(struct move *mm)
 {
 
 	if (tflag) {
@@ -242,7 +240,7 @@ quit(void)
 		if (rfl) {
 			writel("Would you like to save this game?");
 			if (yorn(0))
-				save(0);
+				save(mm, 0);
 		}
 		cturn = 0;
 		return (1);
@@ -307,7 +305,7 @@ nexturn(void)
 }
 
 void
-getarg(char ***arg)
+getarg(struct move *mm, char ***arg)
 {
 	char  **s;
 
@@ -383,13 +381,13 @@ getarg(char ***arg)
 				writel("No save file named\n");
 				getout(0);
 			} else
-				recover(s[0]);
+				recover(mm, s[0]);
 			break;
 		}
 		s++;
 	}
 	if (s[0] != 0)
-		recover(s[0]);
+		recover(mm, s[0]);
 }
 
 void
@@ -450,12 +448,11 @@ getout(int dummy __unused)
 }
 
 void
-roll(void)
+roll(struct move *mm)
 {
 	char    c;
 	int     row;
 	int     col;
-	struct move *mm = &gm;
 
 	row = col = 0;
 	if (iroll) {
diff --git a/backgammon/common_source/table.c b/backgammon/common_source/table.c
index dfd382b2..c083b316 100644
--- a/backgammon/common_source/table.c
+++ b/backgammon/common_source/table.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: table.c,v 1.12 2012/10/13 18:44:15 dholland Exp $	*/
+/*	$NetBSD: table.c,v 1.13 2012/10/13 19:19:39 dholland Exp $	*/
 
 /*
  * Copyright (c) 1980, 1993
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)table.c	8.1 (Berkeley) 5/31/93";
 #else
-__RCSID("$NetBSD: table.c,v 1.12 2012/10/13 18:44:15 dholland Exp $");
+__RCSID("$NetBSD: table.c,v 1.13 2012/10/13 19:19:39 dholland Exp $");
 #endif
 #endif /* not lint */
 
@@ -79,15 +79,14 @@ static const struct state atmata[] = {
 	{'\n', 0, -1},	{'.', 0, 0}
 };
 
-static int dotable(int, int);
-static int rsetbrd(void);
+static int dotable(struct move *, int, int);
+static int rsetbrd(struct move *);
 
 int
-checkmove(int ist)
+checkmove(struct move *mm, int ist)
 {
 	int     j, n;
 	char    c;
-	struct move *mm = &gm;
 
 domove:
 	if (ist == 0) {
@@ -106,13 +105,13 @@ dochar:
 
 	if (c == 'S') {
 		raflag = 0;
-		save(1);
+		save(mm, 1);
 		if (tflag) {
 			curmove(cturn == -1 ? 18 : 19, 39);
 			ist = -1;
 			goto domove;
 		} else {
-			proll();
+			proll(mm);
 			ist = 0;
 			goto domove;
 		}
@@ -127,7 +126,7 @@ dochar:
 				writec(cin[ncin - 1]);
 		}
 		ncin--;
-		n = rsetbrd();
+		n = rsetbrd(mm);
 		if (n == 0) {
 			n = -1;
 			if (tflag)
@@ -152,12 +151,12 @@ dochar:
 			} else {
 				writec('\\');
 				writec('\n');
-				proll();
+				proll(mm);
 				ist = 0;
 				goto domove;
 			}
 	}
-	n = dotable(c, ist);
+	n = dotable(mm, c, ist);
 	if (n >= 0) {
 		cin[ncin++] = c;
 		if (n > 2)
@@ -176,22 +175,22 @@ dochar:
 
 	if (n == -6) {
 		if (!tflag) {
-			if (movokay(mvl + 1)) {
+			if (movokay(mm, mvl + 1)) {
 				wrboard();
-				movback(mvl + 1);
+				movback(mm, mvl + 1);
 			}
-			proll();
+			proll(mm);
 			writel("\t\tMove:  ");
 			for (j = 0; j < ncin;)
 				writec(cin[j++]);
 		} else {
-			if (movokay(mvl + 1)) {
+			if (movokay(mm, mvl + 1)) {
 				refresh();
-				movback(mvl + 1);
+				movback(mm, mvl + 1);
 			} else
 				curmove(cturn == -1 ? 18 : 19, ncin + 39);
 		}
-		ist = n = rsetbrd();
+		ist = n = rsetbrd(mm);
 		goto dochar;
 	}
 	if (n != -5)
@@ -201,11 +200,10 @@ dochar:
 }
 
 static int
-dotable(int c, int i)
+dotable(struct move *mm, int c, int i)
 {
 	int     a;
 	int     test;
-	struct move *mm = &gm;
 
 	test = (c == 'R');
 
@@ -217,10 +215,10 @@ dotable(int c, int i)
 				wrboard();
 				if (tflag) {
 					curmove(cturn == -1 ? 18 : 19, 0);
-					proll();
+					proll(mm);
 					writel("\t\t");
 				} else
-					proll();
+					proll(mm);
 				break;
 
 			case 2:
@@ -271,7 +269,7 @@ dotable(int c, int i)
 					curmove(cturn == -1 ? 18 : 19, 39);
 				} else {
 					writec('\n');
-					proll();
+					proll(mm);
 					writel("\t\tMove:  ");
 				}
 				break;
@@ -296,17 +294,16 @@ dotable(int c, int i)
 }
 
 static int
-rsetbrd(void)
+rsetbrd(struct move *mm)
 {
 	int     i, j, n;
-	struct move *mm = &gm;
 
 	n = 0;
 	mvl = 0;
 	for (i = 0; i < 4; i++)
 		mm->p[i] = mm->g[i] = -1;
 	for (j = 0; j < ncin; j++)
-		if ((n = dotable(cin[j], n)) < 0)
+		if ((n = dotable(mm, cin[j], n)) < 0)
 			return n;
 	return (n);
 }