diff --git a/test/bs.c b/test/bs.c
new file mode 100644
index 0000000..f9572be
--- /dev/null
+++ b/test/bs.c
@@ -0,0 +1,1256 @@
+/****************************************************************************
+ * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+/* 
+ * bs.c - original author: Bruce Holloway
+ *		salvo option by: Chuck A DeGaul
+ * with improved user interface, autoconfiguration and code cleanup
+ *		by Eric S. Raymond <esr@snark.thyrsus.com>
+ * v1.2 with color support and minor portability fixes, November 1990
+ * v2.0 featuring strict ANSI/POSIX conformance, November 1993.
+ * v2.1 with ncurses mouse support, September 1995
+ *
+ * $Id: bs.c,v 1.47 2008/08/03 18:30:28 tom Exp $
+ */
+
+#include <test.priv.h>
+
+#include <time.h>
+
+#ifndef SIGIOT
+#define SIGIOT SIGABRT
+#endif
+
+static int getcoord(int);
+
+/*
+ * Constants for tuning the random-fire algorithm. It prefers moves that
+ * diagonal-stripe the board with a stripe separation of srchstep. If
+ * no such preferred moves are found, srchstep is decremented.
+ */
+#define BEGINSTEP	3	/* initial value of srchstep */
+
+/* miscellaneous constants */
+#define SHIPTYPES	5
+#define	OTHER		(1-turn)
+#define PLAYER		0
+#define COMPUTER	1
+#define MARK_HIT	'H'
+#define MARK_MISS	'o'
+#define CTRLC		'\003'	/* used as terminate command */
+#define FF		'\014'	/* used as redraw command */
+
+/* coordinate handling */
+#define BWIDTH		10
+#define BDEPTH		10
+
+/* display symbols */
+#define SHOWHIT		'*'
+#define SHOWSPLASH	' '
+#define IS_SHIP(c)	(isupper(UChar(c)) ? TRUE : FALSE)
+
+/* how to position us on player board */
+#define PYBASE	3
+#define PXBASE	3
+#define PY(y)	(PYBASE + (y))
+#define PX(x)	(PXBASE + (x)*3)
+#define pgoto(y, x)	(void)move(PY(y), PX(x))
+
+/* how to position us on cpu board */
+#define CYBASE	3
+#define CXBASE	48
+#define CY(y)	(CYBASE + (y))
+#define CX(x)	(CXBASE + (x)*3)
+#define CYINV(y)	((y) - CYBASE)
+#define CXINV(x)	(((x) - CXBASE) / 3)
+#define cgoto(y, x)	(void)move(CY(y), CX(x))
+
+#define ONBOARD(x, y)	(x >= 0 && x < BWIDTH && y >= 0 && y < BDEPTH)
+
+/* other board locations */
+#define COLWIDTH	80
+#define PROMPTLINE	21	/* prompt line */
+#define SYBASE		CYBASE + BDEPTH + 3	/* move key diagram */
+#define SXBASE		63
+#define MYBASE		SYBASE - 1	/* diagram caption */
+#define MXBASE		64
+#define HYBASE		SYBASE - 1	/* help area */
+#define HXBASE		0
+
+/* this will need to be changed if BWIDTH changes */
+static char numbers[] = "   0  1  2  3  4  5  6  7  8  9";
+
+static char carrier[] = "Aircraft Carrier";
+static char battle[] = "Battleship";
+static char sub[] = "Submarine";
+static char destroy[] = "Destroyer";
+static char ptboat[] = "PT Boat";
+
+static char name[40];
+static char dftname[] = "stranger";
+
+/* direction constants */
+#define E	0
+#define SE	1
+#define S	2
+#define SW	3
+#define W	4
+#define NW	5
+#define N	6
+#define NE	7
+static int xincr[8] =
+{1, 1, 0, -1, -1, -1, 0, 1};
+static int yincr[8] =
+{0, 1, 1, 1, 0, -1, -1, -1};
+
+/* current ship position and direction */
+static int curx = (BWIDTH / 2);
+static int cury = (BDEPTH / 2);
+
+typedef struct {
+    char *name;			/* name of the ship type */
+    int hits;			/* how many times has this ship been hit? */
+    char symbol;		/* symbol for game purposes */
+    int length;			/* length of ship */
+    int x, y;			/* coordinates of ship start point */
+    int dir;			/* direction of `bow' */
+    bool placed;		/* has it been placed on the board? */
+} ship_t;
+
+static bool checkplace(int b, ship_t * ss, int vis);
+
+#define SHIPIT(name, symbol, length) { name, 0, symbol, length, 0,0, 0, FALSE }
+
+static ship_t plyship[SHIPTYPES] =
+{
+    SHIPIT(carrier, 'A', 5),
+    SHIPIT(battle, 'B', 4),
+    SHIPIT(destroy, 'D', 3),
+    SHIPIT(sub, 'S', 3),
+    SHIPIT(ptboat, 'P', 2),
+};
+
+static ship_t cpuship[SHIPTYPES] =
+{
+    SHIPIT(carrier, 'A', 5),
+    SHIPIT(battle, 'B', 4),
+    SHIPIT(destroy, 'D', 3),
+    SHIPIT(sub, 'S', 3),
+    SHIPIT(ptboat, 'P', 2),
+};
+
+/* "Hits" board, and main board. */
+static char hits[2][BWIDTH][BDEPTH];
+static char board[2][BWIDTH][BDEPTH];
+
+static int turn;		/* 0=player, 1=computer */
+static int plywon = 0, cpuwon = 0;	/* How many games has each won? */
+
+static int salvo, blitz, closepack;
+
+#define	PR	(void)addstr
+
+static RETSIGTYPE uninitgame(int sig) GCC_NORETURN;
+
+static RETSIGTYPE
+uninitgame(int sig GCC_UNUSED)
+/* end the game, either normally or due to signal */
+{
+    clear();
+    (void) refresh();
+    (void) reset_shell_mode();
+    (void) echo();
+    (void) endwin();
+    ExitProgram(sig ? EXIT_FAILURE : EXIT_SUCCESS);
+}
+
+static void
+announceopts(void)
+/* announce which game options are enabled */
+{
+    if (salvo || blitz || closepack) {
+	(void) printw("Playing optional game (");
+	if (salvo)
+	    (void) printw("salvo, ");
+	else
+	    (void) printw("nosalvo, ");
+	if (blitz)
+	    (void) printw("blitz ");
+	else
+	    (void) printw("noblitz, ");
+	if (closepack)
+	    (void) printw("closepack)");
+	else
+	    (void) printw("noclosepack)");
+    } else
+	(void) printw(
+			 "Playing standard game (noblitz, nosalvo, noclosepack)");
+}
+
+static void
+intro(void)
+{
+    char *tmpname;
+
+    srand((unsigned) (time(0L) + getpid()));	/* Kick the random number generator */
+
+    CATCHALL(uninitgame);
+
+    if ((tmpname = getlogin()) != 0) {
+	(void) strcpy(name, tmpname);
+	name[0] = toupper(UChar(name[0]));
+    } else
+	(void) strcpy(name, dftname);
+
+    (void) initscr();
+    keypad(stdscr, TRUE);
+    (void) def_prog_mode();
+    (void) nonl();
+    (void) cbreak();
+    (void) noecho();
+
+#ifdef PENGUIN
+    (void) clear();
+    (void) mvaddstr(4, 29, "Welcome to Battleship!");
+    (void) move(8, 0);
+    PR("                                                  \\\n");
+    PR("                           \\                     \\ \\\n");
+    PR("                          \\ \\                   \\ \\ \\_____________\n");
+    PR("                         \\ \\ \\_____________      \\ \\/            |\n");
+    PR("                          \\ \\/             \\      \\/             |\n");
+    PR("                           \\/               \\_____/              |__\n");
+    PR("           ________________/                                       |\n");
+    PR("           \\  S.S. Penguin                                         |\n");
+    PR("            \\                                                     /\n");
+    PR("             \\___________________________________________________/\n");
+
+    (void) mvaddstr(22, 27, "Hit any key to continue...");
+    (void) refresh();
+    (void) getch();
+#endif /* PENGUIN */
+
+#ifdef A_COLOR
+    start_color();
+
+    init_pair(COLOR_BLACK, COLOR_BLACK, COLOR_BLACK);
+    init_pair(COLOR_GREEN, COLOR_GREEN, COLOR_BLACK);
+    init_pair(COLOR_RED, COLOR_RED, COLOR_BLACK);
+    init_pair(COLOR_CYAN, COLOR_CYAN, COLOR_BLACK);
+    init_pair(COLOR_WHITE, COLOR_WHITE, COLOR_BLACK);
+    init_pair(COLOR_MAGENTA, COLOR_MAGENTA, COLOR_BLACK);
+    init_pair(COLOR_BLUE, COLOR_BLUE, COLOR_BLACK);
+    init_pair(COLOR_YELLOW, COLOR_YELLOW, COLOR_BLACK);
+#endif /* A_COLOR */
+
+#ifdef NCURSES_MOUSE_VERSION
+    (void) mousemask(BUTTON1_CLICKED, (mmask_t *) NULL);
+#endif /* NCURSES_MOUSE_VERSION */
+}
+
+/* VARARGS1 */
+static void
+prompt(int n, NCURSES_CONST char *f, const char *s)
+/* print a message at the prompt line */
+{
+    (void) move(PROMPTLINE + n, 0);
+    (void) clrtoeol();
+    (void) printw(f, s);
+    (void) refresh();
+}
+
+static void
+error(NCURSES_CONST char *s)
+{
+    (void) move(PROMPTLINE + 2, 0);
+    (void) clrtoeol();
+    if (s) {
+	(void) addstr(s);
+	(void) beep();
+    }
+}
+
+static void
+placeship(int b, ship_t * ss, int vis)
+{
+    int l;
+
+    for (l = 0; l < ss->length; ++l) {
+	int newx = ss->x + l * xincr[ss->dir];
+	int newy = ss->y + l * yincr[ss->dir];
+
+	board[b][newx][newy] = ss->symbol;
+	if (vis) {
+	    pgoto(newy, newx);
+	    (void) addch((chtype) ss->symbol);
+	}
+    }
+    ss->hits = 0;
+}
+
+static int
+rnd(int n)
+{
+    return (((rand() & 0x7FFF) % n));
+}
+
+static void
+randomplace(int b, ship_t * ss)
+/* generate a valid random ship placement into px,py */
+{
+
+    do {
+	ss->dir = rnd(2) ? E : S;
+	ss->x = rnd(BWIDTH - (ss->dir == E ? ss->length : 0));
+	ss->y = rnd(BDEPTH - (ss->dir == S ? ss->length : 0));
+    } while
+	(!checkplace(b, ss, FALSE));
+}
+
+static void
+initgame(void)
+{
+    int i, j, unplaced;
+    ship_t *ss;
+
+    (void) clear();
+    (void) mvaddstr(0, 35, "BATTLESHIPS");
+    (void) move(PROMPTLINE + 2, 0);
+    announceopts();
+
+    memset(board, 0, sizeof(char) * BWIDTH * BDEPTH * 2);
+    memset(hits, 0, sizeof(char) * BWIDTH * BDEPTH * 2);
+    for (i = 0; i < SHIPTYPES; i++) {
+	ss = cpuship + i;
+
+	ss->x =
+	    ss->y =
+	    ss->dir =
+	    ss->hits = 0;
+	ss->placed = FALSE;
+
+	ss = plyship + i;
+
+	ss->x =
+	    ss->y =
+	    ss->dir =
+	    ss->hits = 0;
+	ss->placed = FALSE;
+    }
+
+    /* draw empty boards */
+    (void) mvaddstr(PYBASE - 2, PXBASE + 5, "Main Board");
+    (void) mvaddstr(PYBASE - 1, PXBASE - 3, numbers);
+    for (i = 0; i < BDEPTH; ++i) {
+	(void) mvaddch(PYBASE + i, PXBASE - 3, (chtype) (i + 'A'));
+#ifdef A_COLOR
+	if (has_colors())
+	    attron(COLOR_PAIR(COLOR_BLUE));
+#endif /* A_COLOR */
+	(void) addch(' ');
+	for (j = 0; j < BWIDTH; j++)
+	    (void) addstr(" . ");
+#ifdef A_COLOR
+	attrset(0);
+#endif /* A_COLOR */
+	(void) addch(' ');
+	(void) addch((chtype) (i + 'A'));
+    }
+    (void) mvaddstr(PYBASE + BDEPTH, PXBASE - 3, numbers);
+    (void) mvaddstr(CYBASE - 2, CXBASE + 7, "Hit/Miss Board");
+    (void) mvaddstr(CYBASE - 1, CXBASE - 3, numbers);
+    for (i = 0; i < BDEPTH; ++i) {
+	(void) mvaddch(CYBASE + i, CXBASE - 3, (chtype) (i + 'A'));
+#ifdef A_COLOR
+	if (has_colors())
+	    attron(COLOR_PAIR(COLOR_BLUE));
+#endif /* A_COLOR */
+	(void) addch(' ');
+	for (j = 0; j < BWIDTH; j++)
+	    (void) addstr(" . ");
+#ifdef A_COLOR
+	attrset(0);
+#endif /* A_COLOR */
+	(void) addch(' ');
+	(void) addch((chtype) (i + 'A'));
+    }
+
+    (void) mvaddstr(CYBASE + BDEPTH, CXBASE - 3, numbers);
+
+    (void) mvprintw(HYBASE, HXBASE,
+		    "To position your ships: move the cursor to a spot, then");
+    (void) mvprintw(HYBASE + 1, HXBASE,
+		    "type the first letter of a ship type to select it, then");
+    (void) mvprintw(HYBASE + 2, HXBASE,
+		    "type a direction ([hjkl] or [4862]), indicating how the");
+    (void) mvprintw(HYBASE + 3, HXBASE,
+		    "ship should be pointed. You may also type a ship letter");
+    (void) mvprintw(HYBASE + 4, HXBASE,
+		    "followed by `r' to position it randomly, or type `R' to");
+    (void) mvprintw(HYBASE + 5, HXBASE,
+		    "place all remaining ships randomly.");
+
+    (void) mvaddstr(MYBASE, MXBASE, "Aiming keys:");
+    (void) mvaddstr(SYBASE, SXBASE, "y k u    7 8 9");
+    (void) mvaddstr(SYBASE + 1, SXBASE, " \\|/      \\|/ ");
+    (void) mvaddstr(SYBASE + 2, SXBASE, "h-+-l    4-+-6");
+    (void) mvaddstr(SYBASE + 3, SXBASE, " /|\\      /|\\ ");
+    (void) mvaddstr(SYBASE + 4, SXBASE, "b j n    1 2 3");
+
+    /* have the computer place ships */
+    for (ss = cpuship; ss < cpuship + SHIPTYPES; ss++) {
+	randomplace(COMPUTER, ss);
+	placeship(COMPUTER, ss, FALSE);
+    }
+
+    ss = (ship_t *) NULL;
+    do {
+	char c, docked[SHIPTYPES + 2], *cp = docked;
+
+	/* figure which ships still wait to be placed */
+	*cp++ = 'R';
+	for (i = 0; i < SHIPTYPES; i++)
+	    if (!plyship[i].placed)
+		*cp++ = plyship[i].symbol;
+	*cp = '\0';
+
+	/* get a command letter */
+	prompt(1, "Type one of [%s] to pick a ship.", docked + 1);
+	do {
+	    c = getcoord(PLAYER);
+	} while
+	    (!strchr(docked, c));
+
+	if (c == 'R')
+	    (void) ungetch('R');
+	else {
+	    /* map that into the corresponding symbol */
+	    for (ss = plyship; ss < plyship + SHIPTYPES; ss++)
+		if (ss->symbol == c)
+		    break;
+
+	    prompt(1, "Type one of [hjklrR] to place your %s.", ss->name);
+	    pgoto(cury, curx);
+	}
+
+	do {
+	    c = getch();
+	} while
+	    (!(strchr("hjklrR", c) || c == FF));
+
+	if (c == FF) {
+	    (void) clearok(stdscr, TRUE);
+	    (void) refresh();
+	} else if (c == 'r') {
+	    assert(ss != 0);
+	    prompt(1, "Random-placing your %s", ss->name);
+	    randomplace(PLAYER, ss);
+	    placeship(PLAYER, ss, TRUE);
+	    error((char *) NULL);
+	    ss->placed = TRUE;
+	} else if (c == 'R') {
+	    prompt(1, "Placing the rest of your fleet at random...", "");
+	    for (ss = plyship; ss < plyship + SHIPTYPES; ss++)
+		if (!ss->placed) {
+		    randomplace(PLAYER, ss);
+		    placeship(PLAYER, ss, TRUE);
+		    ss->placed = TRUE;
+		}
+	    error((char *) NULL);
+	} else if (strchr("hjkl8462", c)) {
+	    assert(ss != 0);
+	    ss->x = curx;
+	    ss->y = cury;
+
+	    switch (c) {
+	    case 'k':
+	    case '8':
+		ss->dir = N;
+		break;
+	    case 'j':
+	    case '2':
+		ss->dir = S;
+		break;
+	    case 'h':
+	    case '4':
+		ss->dir = W;
+		break;
+	    case 'l':
+	    case '6':
+		ss->dir = E;
+		break;
+	    }
+
+	    if (checkplace(PLAYER, ss, TRUE)) {
+		placeship(PLAYER, ss, TRUE);
+		error((char *) NULL);
+		ss->placed = TRUE;
+	    }
+	}
+
+	for (unplaced = i = 0; i < SHIPTYPES; i++)
+	    unplaced += !plyship[i].placed;
+    } while
+	(unplaced);
+
+    turn = rnd(2);
+
+    (void) mvprintw(HYBASE, HXBASE,
+		    "To fire, move the cursor to your chosen aiming point   ");
+    (void) mvprintw(HYBASE + 1, HXBASE,
+		    "and strike any key other than a motion key.            ");
+    (void) mvprintw(HYBASE + 2, HXBASE,
+		    "                                                       ");
+    (void) mvprintw(HYBASE + 3, HXBASE,
+		    "                                                       ");
+    (void) mvprintw(HYBASE + 4, HXBASE,
+		    "                                                       ");
+    (void) mvprintw(HYBASE + 5, HXBASE,
+		    "                                                       ");
+
+    (void) prompt(0, "Press any key to start...", "");
+    (void) getch();
+}
+
+static int
+getcoord(int atcpu)
+{
+    int ny, nx, c;
+
+    if (atcpu)
+	cgoto(cury, curx);
+    else
+	pgoto(cury, curx);
+    (void) refresh();
+    for (;;) {
+	if (atcpu) {
+	    (void) mvprintw(CYBASE + BDEPTH + 1, CXBASE + 11, "(%d, %c)",
+			    curx, 'A' + cury);
+	    cgoto(cury, curx);
+	} else {
+	    (void) mvprintw(PYBASE + BDEPTH + 1, PXBASE + 11, "(%d, %c)",
+			    curx, 'A' + cury);
+	    pgoto(cury, curx);
+	}
+
+	switch (c = getch()) {
+	case 'k':
+	case '8':
+	case KEY_UP:
+	    ny = cury + BDEPTH - 1;
+	    nx = curx;
+	    break;
+	case 'j':
+	case '2':
+	case KEY_DOWN:
+	    ny = cury + 1;
+	    nx = curx;
+	    break;
+	case 'h':
+	case '4':
+	case KEY_LEFT:
+	    ny = cury;
+	    nx = curx + BWIDTH - 1;
+	    break;
+	case 'l':
+	case '6':
+	case KEY_RIGHT:
+	    ny = cury;
+	    nx = curx + 1;
+	    break;
+	case 'y':
+	case '7':
+	case KEY_A1:
+	    ny = cury + BDEPTH - 1;
+	    nx = curx + BWIDTH - 1;
+	    break;
+	case 'b':
+	case '1':
+	case KEY_C1:
+	    ny = cury + 1;
+	    nx = curx + BWIDTH - 1;
+	    break;
+	case 'u':
+	case '9':
+	case KEY_A3:
+	    ny = cury + BDEPTH - 1;
+	    nx = curx + 1;
+	    break;
+	case 'n':
+	case '3':
+	case KEY_C3:
+	    ny = cury + 1;
+	    nx = curx + 1;
+	    break;
+	case FF:
+	    nx = curx;
+	    ny = cury;
+	    (void) clearok(stdscr, TRUE);
+	    (void) refresh();
+	    break;
+#ifdef NCURSES_MOUSE_VERSION
+	case KEY_MOUSE:
+	    {
+		MEVENT myevent;
+
+		getmouse(&myevent);
+		if (atcpu
+		    && myevent.y >= CY(0) && myevent.y <= CY(BDEPTH)
+		    && myevent.x >= CX(0) && myevent.x <= CX(BDEPTH)) {
+		    curx = CXINV(myevent.x);
+		    cury = CYINV(myevent.y);
+		    return (' ');
+		} else {
+		    beep();
+		    continue;
+		}
+	    }
+	    /* no fall through */
+#endif /* NCURSES_MOUSE_VERSION */
+
+	default:
+	    if (atcpu)
+		(void) mvaddstr(CYBASE + BDEPTH + 1, CXBASE + 11, "      ");
+	    else
+		(void) mvaddstr(PYBASE + BDEPTH + 1, PXBASE + 11, "      ");
+	    return (c);
+	}
+
+	curx = nx % BWIDTH;
+	cury = ny % BDEPTH;
+    }
+}
+
+static bool
+collidecheck(int b, int y, int x)
+/* is this location on the selected zboard adjacent to a ship? */
+{
+    bool collide;
+
+    /* anything on the square */
+    if ((collide = IS_SHIP(board[b][x][y])) != FALSE)
+	return (collide);
+
+    /* anything on the neighbors */
+    if (!closepack) {
+	int i;
+
+	for (i = 0; i < 8; i++) {
+	    int xend, yend;
+
+	    yend = y + yincr[i];
+	    xend = x + xincr[i];
+	    if (ONBOARD(xend, yend)
+		&& IS_SHIP(board[b][xend][yend])) {
+		collide = TRUE;
+		break;
+	    }
+	}
+    }
+    return (collide);
+}
+
+static bool
+checkplace(int b, ship_t * ss, int vis)
+{
+    int l, xend, yend;
+
+    /* first, check for board edges */
+    xend = ss->x + (ss->length - 1) * xincr[ss->dir];
+    yend = ss->y + (ss->length - 1) * yincr[ss->dir];
+    if (!ONBOARD(xend, yend)) {
+	if (vis)
+	    switch (rnd(3)) {
+	    case 0:
+		error("Ship is hanging from the edge of the world");
+		break;
+	    case 1:
+		error("Try fitting it on the board");
+		break;
+	    case 2:
+		error("Figure I won't find it if you put it there?");
+		break;
+	    }
+	return (FALSE);
+    }
+
+    for (l = 0; l < ss->length; ++l) {
+	if (collidecheck(b, ss->y + l * yincr[ss->dir], ss->x + l * xincr[ss->dir])) {
+	    if (vis)
+		switch (rnd(3)) {
+		case 0:
+		    error("There's already a ship there");
+		    break;
+		case 1:
+		    error("Collision alert!  Aaaaaagh!");
+		    break;
+		case 2:
+		    error("Er, Admiral, what about the other ship?");
+		    break;
+		}
+	    return (FALSE);
+	}
+    }
+    return (TRUE);
+}
+
+static int
+awinna(void)
+{
+    int i, j;
+    ship_t *ss;
+
+    for (i = 0; i < 2; ++i) {
+	ss = (i) ? cpuship : plyship;
+	for (j = 0; j < SHIPTYPES; ++j, ++ss)
+	    if (ss->length > ss->hits)
+		break;
+	if (j == SHIPTYPES)
+	    return (OTHER);
+    }
+    return (-1);
+}
+
+static ship_t *
+hitship(int x, int y)
+/* register a hit on the targeted ship */
+{
+    ship_t *sb, *ss;
+    char sym;
+    int oldx, oldy;
+
+    getyx(stdscr, oldy, oldx);
+    sb = (turn) ? plyship : cpuship;
+    if ((sym = board[OTHER][x][y]) == 0)
+	return ((ship_t *) NULL);
+    for (ss = sb; ss < sb + SHIPTYPES; ++ss)
+	if (ss->symbol == sym) {
+	    if (++ss->hits < ss->length)	/* still afloat? */
+		return ((ship_t *) NULL);
+	    else {		/* sunk! */
+		int i, j;
+
+		if (!closepack)
+		    for (j = -1; j <= 1; j++) {
+			int bx = ss->x + j * xincr[(ss->dir + 2) % 8];
+			int by = ss->y + j * yincr[(ss->dir + 2) % 8];
+
+			for (i = -1; i <= ss->length; ++i) {
+			    int x1, y1;
+
+			    x1 = bx + i * xincr[ss->dir];
+			    y1 = by + i * yincr[ss->dir];
+			    if (ONBOARD(x1, y1)) {
+				hits[turn][x1][y1] = MARK_MISS;
+				if (turn % 2 == PLAYER) {
+				    cgoto(y1, x1);
+#ifdef A_COLOR
+				    if (has_colors())
+					attron(COLOR_PAIR(COLOR_GREEN));
+#endif /* A_COLOR */
+				    (void) addch(MARK_MISS);
+#ifdef A_COLOR
+				    attrset(0);
+#endif /* A_COLOR */
+				} else {
+				    pgoto(y1, x1);
+				    (void) addch(SHOWSPLASH);
+				}
+			    }
+			}
+		    }
+
+		for (i = 0; i < ss->length; ++i) {
+		    int x1 = ss->x + i * xincr[ss->dir];
+		    int y1 = ss->y + i * yincr[ss->dir];
+
+		    hits[turn][x1][y1] = ss->symbol;
+		    if (turn % 2 == PLAYER) {
+			cgoto(y1, x1);
+			(void) addch((chtype) (ss->symbol));
+		    } else {
+			pgoto(y1, x1);
+#ifdef A_COLOR
+			if (has_colors())
+			    attron(COLOR_PAIR(COLOR_RED));
+#endif /* A_COLOR */
+			(void) addch(SHOWHIT);
+#ifdef A_COLOR
+			attrset(0);
+#endif /* A_COLOR */
+		    }
+		}
+
+		(void) move(oldy, oldx);
+		return (ss);
+	    }
+	}
+    (void) move(oldy, oldx);
+    return ((ship_t *) NULL);
+}
+
+static bool
+plyturn(void)
+{
+    ship_t *ss;
+    bool hit;
+    NCURSES_CONST char *m = NULL;
+
+    prompt(1, "Where do you want to shoot? ", "");
+    for (;;) {
+	(void) getcoord(COMPUTER);
+	if (hits[PLAYER][curx][cury]) {
+	    prompt(1, "You shelled this spot already! Try again.", "");
+	    beep();
+	} else
+	    break;
+    }
+    hit = IS_SHIP(board[COMPUTER][curx][cury]);
+    hits[PLAYER][curx][cury] = (hit ? MARK_HIT : MARK_MISS);
+    cgoto(cury, curx);
+#ifdef A_COLOR
+    if (has_colors()) {
+	if (hit)
+	    attron(COLOR_PAIR(COLOR_RED));
+	else
+	    attron(COLOR_PAIR(COLOR_GREEN));
+    }
+#endif /* A_COLOR */
+    (void) addch((chtype) hits[PLAYER][curx][cury]);
+#ifdef A_COLOR
+    attrset(0);
+#endif /* A_COLOR */
+
+    prompt(1, "You %s.", hit ? "scored a hit" : "missed");
+    if (hit && (ss = hitship(curx, cury))) {
+	switch (rnd(5)) {
+	case 0:
+	    m = " You sank my %s!";
+	    break;
+	case 1:
+	    m = " I have this sinking feeling about my %s....";
+	    break;
+	case 2:
+	    m = " My %s has gone to Davy Jones's locker!";
+	    break;
+	case 3:
+	    m = " Glub, glub -- my %s is headed for the bottom!";
+	    break;
+	case 4:
+	    m = " You'll pick up survivors from my %s, I hope...!";
+	    break;
+	}
+	(void) printw(m, ss->name);
+	(void) beep();
+    }
+    return (hit);
+}
+
+static int
+sgetc(const char *s)
+{
+    const char *s1;
+    int ch;
+
+    (void) refresh();
+    for (;;) {
+	ch = getch();
+	if (islower(ch))
+	    ch = toupper(ch);
+	if (ch == CTRLC)
+	    uninitgame(0);
+	for (s1 = s; *s1 && ch != *s1; ++s1)
+	    continue;
+	if (*s1) {
+	    (void) addch((chtype) ch);
+	    (void) refresh();
+	    return (ch);
+	}
+    }
+}
+
+static void
+randomfire(int *px, int *py)
+/* random-fire routine -- implements simple diagonal-striping strategy */
+{
+    static int turncount = 0;
+    static int srchstep = BEGINSTEP;
+    static int huntoffs;	/* Offset on search strategy */
+    int ypossible[BWIDTH * BDEPTH], xpossible[BWIDTH * BDEPTH], nposs;
+    int ypreferred[BWIDTH * BDEPTH], xpreferred[BWIDTH * BDEPTH], npref;
+    int x, y, i;
+
+    if (turncount++ == 0)
+	huntoffs = rnd(srchstep);
+
+    /* first, list all possible moves */
+    nposs = npref = 0;
+    for (x = 0; x < BWIDTH; x++)
+	for (y = 0; y < BDEPTH; y++)
+	    if (!hits[COMPUTER][x][y]) {
+		xpossible[nposs] = x;
+		ypossible[nposs] = y;
+		nposs++;
+		if (((x + huntoffs) % srchstep) != (y % srchstep)) {
+		    xpreferred[npref] = x;
+		    ypreferred[npref] = y;
+		    npref++;
+		}
+	    }
+
+    if (npref) {
+	i = rnd(npref);
+
+	*px = xpreferred[i];
+	*py = ypreferred[i];
+    } else if (nposs) {
+	i = rnd(nposs);
+
+	*px = xpossible[i];
+	*py = ypossible[i];
+
+	if (srchstep > 1)
+	    --srchstep;
+    } else {
+	error("No moves possible?? Help!");
+	ExitProgram(EXIT_FAILURE);
+	/*NOTREACHED */
+    }
+}
+
+#define S_MISS	0
+#define S_HIT	1
+#define S_SUNK	-1
+
+static int
+cpufire(int x, int y)
+/* fire away at given location */
+{
+    bool hit, sunk;
+    ship_t *ss = NULL;
+
+    hits[COMPUTER][x][y] = (hit = (board[PLAYER][x][y])) ? MARK_HIT : MARK_MISS;
+    (void) mvprintw(PROMPTLINE, 0,
+		    "I shoot at %c%d. I %s!", y + 'A', x, hit ? "hit" :
+		    "miss");
+    if ((sunk = (hit && (ss = hitship(x, y)))) != 0)
+	(void) printw(" I've sunk your %s", ss->name);
+    (void) clrtoeol();
+
+    pgoto(y, x);
+#ifdef A_COLOR
+    if (has_colors()) {
+	if (hit)
+	    attron(COLOR_PAIR(COLOR_RED));
+	else
+	    attron(COLOR_PAIR(COLOR_GREEN));
+    }
+#endif /* A_COLOR */
+    (void) addch((chtype) (hit ? SHOWHIT : SHOWSPLASH));
+#ifdef A_COLOR
+    attrset(0);
+#endif /* A_COLOR */
+
+    return hit ? (sunk ? S_SUNK : S_HIT) : S_MISS;
+}
+
+/*
+ * This code implements a fairly irregular FSM, so please forgive the rampant
+ * unstructuredness below. The five labels are states which need to be held
+ * between computer turns.
+ *
+ * The FSM is not externally reset to RANDOM_FIRE if the player wins. Instead,
+ * the other states check for "impossible" conditions which signify a new
+ * game, then if found transition to RANDOM_FIRE.
+ */
+static bool
+cputurn(void)
+{
+#define POSSIBLE(x, y)	(ONBOARD(x, y) && !hits[COMPUTER][x][y])
+#define RANDOM_FIRE	0
+#define RANDOM_HIT	1
+#define HUNT_DIRECT	2
+#define FIRST_PASS	3
+#define REVERSE_JUMP	4
+#define SECOND_PASS	5
+    static int next = RANDOM_FIRE;
+    static bool used[4];
+    static ship_t ts;
+    int navail, x, y, d, n;
+    int hit = S_MISS;
+
+    switch (next) {
+    case RANDOM_FIRE:		/* last shot was random and missed */
+      refire:
+	randomfire(&x, &y);
+	if (!(hit = cpufire(x, y)))
+	    next = RANDOM_FIRE;
+	else {
+	    ts.x = x;
+	    ts.y = y;
+	    ts.hits = 1;
+	    next = (hit == S_SUNK) ? RANDOM_FIRE : RANDOM_HIT;
+	}
+	break;
+
+    case RANDOM_HIT:		/* last shot was random and hit */
+	used[E / 2] = used[S / 2] = used[W / 2] = used[N / 2] = FALSE;
+	/* FALLTHROUGH */
+
+    case HUNT_DIRECT:		/* last shot hit, we're looking for ship's long axis */
+	for (d = navail = 0; d < 4; d++) {
+	    x = ts.x + xincr[d * 2];
+	    y = ts.y + yincr[d * 2];
+	    if (!used[d] && POSSIBLE(x, y))
+		navail++;
+	    else
+		used[d] = TRUE;
+	}
+	if (navail == 0)	/* no valid places for shots adjacent... */
+	    goto refire;	/* ...so we must random-fire */
+	else {
+	    n = rnd(navail) + 1;
+	    for (d = 0; used[d]; d++) ;
+	    /* used[d] is first that == 0 */
+	    for (; n > 1; n--)
+		while (used[++d]) ;
+	    /* used[d] is next that == 0 */
+
+	    assert(d < 4);
+	    assert(used[d] == FALSE);
+
+	    used[d] = TRUE;
+	    x = ts.x + xincr[d * 2];
+	    y = ts.y + yincr[d * 2];
+
+	    assert(POSSIBLE(x, y));
+
+	    if (!(hit = cpufire(x, y)))
+		next = HUNT_DIRECT;
+	    else {
+		ts.x = x;
+		ts.y = y;
+		ts.dir = d * 2;
+		ts.hits++;
+		next = (hit == S_SUNK) ? RANDOM_FIRE : FIRST_PASS;
+	    }
+	}
+	break;
+
+    case FIRST_PASS:		/* we have a start and a direction now */
+	x = ts.x + xincr[ts.dir];
+	y = ts.y + yincr[ts.dir];
+	if (POSSIBLE(x, y) && (hit = cpufire(x, y))) {
+	    ts.x = x;
+	    ts.y = y;
+	    ts.hits++;
+	    next = (hit == S_SUNK) ? RANDOM_FIRE : FIRST_PASS;
+	} else
+	    next = REVERSE_JUMP;
+	break;
+
+    case REVERSE_JUMP:		/* nail down the ship's other end */
+	d = (ts.dir + 4) % 8;
+	x = ts.x + ts.hits * xincr[d];
+	y = ts.y + ts.hits * yincr[d];
+	if (POSSIBLE(x, y) && (hit = cpufire(x, y))) {
+	    ts.x = x;
+	    ts.y = y;
+	    ts.dir = d;
+	    ts.hits++;
+	    next = (hit == S_SUNK) ? RANDOM_FIRE : SECOND_PASS;
+	} else
+	    next = RANDOM_FIRE;
+	break;
+
+    case SECOND_PASS:		/* continue shooting after reversing */
+	x = ts.x + xincr[ts.dir];
+	y = ts.y + yincr[ts.dir];
+	if (POSSIBLE(x, y) && (hit = cpufire(x, y))) {
+	    ts.x = x;
+	    ts.y = y;
+	    ts.hits++;
+	    next = (hit == S_SUNK) ? RANDOM_FIRE : SECOND_PASS;
+	    break;
+	} else
+	    next = RANDOM_FIRE;
+	break;
+    }
+
+    /* pause between shots in salvo */
+    if (salvo) {
+	(void) refresh();
+	(void) sleep(1);
+    }
+#ifdef DEBUG
+    (void) mvprintw(PROMPTLINE + 2, 0,
+		    "New state %d, x=%d, y=%d, d=%d",
+		    next, x, y, d);
+#endif /* DEBUG */
+    return ((hit) ? TRUE : FALSE);
+}
+
+static int
+playagain(void)
+{
+    int j;
+    ship_t *ss;
+
+    for (ss = cpuship; ss < cpuship + SHIPTYPES; ss++)
+	for (j = 0; j < ss->length; j++) {
+	    cgoto(ss->y + j * yincr[ss->dir], ss->x + j * xincr[ss->dir]);
+	    (void) addch((chtype) ss->symbol);
+	}
+
+    if (awinna())
+	++cpuwon;
+    else
+	++plywon;
+    j = 18 + strlen(name);
+    if (plywon >= 10)
+	++j;
+    if (cpuwon >= 10)
+	++j;
+    (void) mvprintw(1, (COLWIDTH - j) / 2,
+		    "%s: %d     Computer: %d", name, plywon, cpuwon);
+
+    prompt(2, (awinna())? "Want to be humiliated again, %s [yn]? "
+	   : "Going to give me a chance for revenge, %s [yn]? ", name);
+    return (sgetc("YN") == 'Y');
+}
+
+static void
+do_options(int c, char *op[])
+{
+    register int i;
+
+    if (c > 1) {
+	for (i = 1; i < c; i++) {
+	    switch (op[i][0]) {
+	    default:
+	    case '?':
+		(void) fprintf(stderr, "Usage: battle [-s | -b] [-c]\n");
+		(void) fprintf(stderr, "\tWhere the options are:\n");
+		(void) fprintf(stderr, "\t-s : play a salvo game\n");
+		(void) fprintf(stderr, "\t-b : play a blitz game\n");
+		(void) fprintf(stderr, "\t-c : ships may be adjacent\n");
+		ExitProgram(EXIT_FAILURE);
+		break;
+	    case '-':
+		switch (op[i][1]) {
+		case 'b':
+		    blitz = 1;
+		    if (salvo == 1) {
+			(void) fprintf(stderr,
+				       "Bad Arg: -b and -s are mutually exclusive\n");
+			ExitProgram(EXIT_FAILURE);
+		    }
+		    break;
+		case 's':
+		    salvo = 1;
+		    if (blitz == 1) {
+			(void) fprintf(stderr,
+				       "Bad Arg: -s and -b are mutually exclusive\n");
+			ExitProgram(EXIT_FAILURE);
+		    }
+		    break;
+		case 'c':
+		    closepack = 1;
+		    break;
+		default:
+		    (void) fprintf(stderr,
+				   "Bad arg: type \"%s ?\" for usage message\n",
+				   op[0]);
+		    ExitProgram(EXIT_FAILURE);
+		}
+	    }
+	}
+    }
+}
+
+static int
+scount(int who)
+{
+    register int i, shots;
+    register ship_t *sp;
+
+    if (who)
+	sp = cpuship;		/* count cpu shots */
+    else
+	sp = plyship;		/* count player shots */
+
+    for (i = 0, shots = 0; i < SHIPTYPES; i++, sp++) {
+	if (sp->hits >= sp->length)
+	    continue;		/* dead ship */
+	else
+	    shots++;
+    }
+    return (shots);
+}
+
+int
+main(int argc, char *argv[])
+{
+    setlocale(LC_ALL, "");
+
+    do_options(argc, argv);
+
+    intro();
+    do {
+	initgame();
+	while (awinna() == -1) {
+	    if (!blitz) {
+		if (!salvo) {
+		    if (turn)
+			(void) cputurn();
+		    else
+			(void) plyturn();
+		} else {
+		    register int i;
+
+		    i = scount(turn);
+		    while (i--) {
+			if (turn) {
+			    if (cputurn() && awinna() != -1)
+				i = 0;
+			} else {
+			    if (plyturn() && awinna() != -1)
+				i = 0;
+			}
+		    }
+		}
+	    } else
+		while ((turn ? cputurn() : plyturn()) && awinna() == -1)
+		    continue;
+	    turn = OTHER;
+	}
+    } while
+	(playagain());
+    uninitgame(0);
+    /*NOTREACHED */
+}
+
+/* bs.c ends here */