2 * bs.c - original author: Bruce Holloway
3 * salvo option by: Chuck A DeGaul
4 * with improved user interface, autoconfiguration and code cleanup
5 * by Eric S. Raymond <esr@snark.thyrsus.com>
6 * v1.2 with color support and minor portability fixes, November 1990
7 * v2.0 featuring strict ANSI/POSIX conformance, November 1993.
8 * v2.1 with ncurses mouse support, September 1995
10 * $Id: bs.c,v 1.39 2003/12/06 18:10:13 tom Exp $
15 #include <test.priv.h>
18 #define SIGIOT SIGABRT
21 static int getcoord(int);
24 * Constants for tuning the random-fire algorithm. It prefers moves that
25 * diagonal-stripe the board with a stripe separation of srchstep. If
26 * no such preferred moves are found, srchstep is decremented.
28 #define BEGINSTEP 3 /* initial value of srchstep */
30 /* miscellaneous constants */
32 #define OTHER (1-turn)
37 #define CTRLC '\003' /* used as terminate command */
38 #define FF '\014' /* used as redraw command */
40 /* coordinate handling */
46 #define SHOWSPLASH ' '
47 #define IS_SHIP(c) (isupper(UChar(c)) ? TRUE : FALSE)
49 /* how to position us on player board */
52 #define PY(y) (PYBASE + (y))
53 #define PX(x) (PXBASE + (x)*3)
54 #define pgoto(y, x) (void)move(PY(y), PX(x))
56 /* how to position us on cpu board */
59 #define CY(y) (CYBASE + (y))
60 #define CX(x) (CXBASE + (x)*3)
61 #define CYINV(y) ((y) - CYBASE)
62 #define CXINV(x) (((x) - CXBASE) / 3)
63 #define cgoto(y, x) (void)move(CY(y), CX(x))
65 #define ONBOARD(x, y) (x >= 0 && x < BWIDTH && y >= 0 && y < BDEPTH)
67 /* other board locations */
69 #define PROMPTLINE 21 /* prompt line */
70 #define SYBASE CYBASE + BDEPTH + 3 /* move key diagram */
72 #define MYBASE SYBASE - 1 /* diagram caption */
74 #define HYBASE SYBASE - 1 /* help area */
77 /* this will need to be changed if BWIDTH changes */
78 static char numbers[] = " 0 1 2 3 4 5 6 7 8 9";
80 static char carrier[] = "Aircraft Carrier";
81 static char battle[] = "Battleship";
82 static char sub[] = "Submarine";
83 static char destroy[] = "Destroyer";
84 static char ptboat[] = "PT Boat";
87 static char dftname[] = "stranger";
89 /* direction constants */
99 {1, 1, 0, -1, -1, -1, 0, 1};
100 static int yincr[8] =
101 {0, 1, 1, 1, 0, -1, -1, -1};
103 /* current ship position and direction */
104 static int curx = (BWIDTH / 2);
105 static int cury = (BDEPTH / 2);
108 char *name; /* name of the ship type */
109 int hits; /* how many times has this ship been hit? */
110 char symbol; /* symbol for game purposes */
111 int length; /* length of ship */
112 int x, y; /* coordinates of ship start point */
113 int dir; /* direction of `bow' */
114 bool placed; /* has it been placed on the board? */
117 static bool checkplace(int b, ship_t * ss, int vis);
119 #define SHIPIT(name, symbol, length) { name, 0, symbol, length, 0,0, 0, FALSE }
121 static ship_t plyship[SHIPTYPES] =
123 SHIPIT(carrier, 'A', 5),
124 SHIPIT(battle, 'B', 4),
125 SHIPIT(destroy, 'D', 3),
127 SHIPIT(ptboat, 'P', 2),
130 static ship_t cpuship[SHIPTYPES] =
132 SHIPIT(carrier, 'A', 5),
133 SHIPIT(battle, 'B', 4),
134 SHIPIT(destroy, 'D', 3),
136 SHIPIT(ptboat, 'P', 2),
139 /* "Hits" board, and main board. */
140 static char hits[2][BWIDTH][BDEPTH];
141 static char board[2][BWIDTH][BDEPTH];
143 static int turn; /* 0=player, 1=computer */
144 static int plywon = 0, cpuwon = 0; /* How many games has each won? */
146 static int salvo, blitz, closepack;
148 #define PR (void)addstr
150 static RETSIGTYPE uninitgame(int sig) GCC_NORETURN;
152 static RETSIGTYPE uninitgame(int sig GCC_UNUSED)
153 /* end the game, either normally or due to signal */
157 (void) reset_shell_mode();
160 ExitProgram(sig ? EXIT_FAILURE : EXIT_SUCCESS);
165 /* announce which game options are enabled */
167 if (salvo || blitz || closepack) {
168 (void) printw("Playing optional game (");
170 (void) printw("salvo, ");
172 (void) printw("nosalvo, ");
174 (void) printw("blitz ");
176 (void) printw("noblitz, ");
178 (void) printw("closepack)");
180 (void) printw("noclosepack)");
183 "Playing standard game (noblitz, nosalvo, noclosepack)");
191 srand((unsigned) (time(0L) + getpid())); /* Kick the random number generator */
193 (void) signal(SIGINT, uninitgame);
194 (void) signal(SIGINT, uninitgame);
195 (void) signal(SIGIOT, uninitgame); /* for assert(3) */
196 if (signal(SIGQUIT, SIG_IGN) != SIG_IGN)
197 (void) signal(SIGQUIT, uninitgame);
199 if ((tmpname = getlogin()) != 0) {
200 (void) strcpy(name, tmpname);
201 name[0] = toupper(name[0]);
203 (void) strcpy(name, dftname);
206 keypad(stdscr, TRUE);
207 (void) def_prog_mode();
214 (void) mvaddstr(4, 29, "Welcome to Battleship!");
218 PR(" \\ \\ \\ \\ \\_____________\n");
219 PR(" \\ \\ \\_____________ \\ \\/ |\n");
220 PR(" \\ \\/ \\ \\/ |\n");
221 PR(" \\/ \\_____/ |__\n");
222 PR(" ________________/ |\n");
223 PR(" \\ S.S. Penguin |\n");
225 PR(" \\___________________________________________________/\n");
227 (void) mvaddstr(22, 27, "Hit any key to continue...");
235 init_pair(COLOR_BLACK, COLOR_BLACK, COLOR_BLACK);
236 init_pair(COLOR_GREEN, COLOR_GREEN, COLOR_BLACK);
237 init_pair(COLOR_RED, COLOR_RED, COLOR_BLACK);
238 init_pair(COLOR_CYAN, COLOR_CYAN, COLOR_BLACK);
239 init_pair(COLOR_WHITE, COLOR_WHITE, COLOR_BLACK);
240 init_pair(COLOR_MAGENTA, COLOR_MAGENTA, COLOR_BLACK);
241 init_pair(COLOR_BLUE, COLOR_BLUE, COLOR_BLACK);
242 init_pair(COLOR_YELLOW, COLOR_YELLOW, COLOR_BLACK);
245 #ifdef NCURSES_MOUSE_VERSION
246 (void) mousemask(BUTTON1_CLICKED, (mmask_t *) NULL);
247 #endif /* NCURSES_MOUSE_VERSION */
252 prompt(int n, const char *f, const char *s)
253 /* print a message at the prompt line */
255 (void) move(PROMPTLINE + n, 0);
262 error(NCURSES_CONST char *s)
264 (void) move(PROMPTLINE + 2, 0);
273 placeship(int b, ship_t * ss, int vis)
277 for (l = 0; l < ss->length; ++l) {
278 int newx = ss->x + l * xincr[ss->dir];
279 int newy = ss->y + l * yincr[ss->dir];
281 board[b][newx][newy] = ss->symbol;
284 (void) addch((chtype) ss->symbol);
293 return (((rand() & 0x7FFF) % n));
297 randomplace(int b, ship_t * ss)
298 /* generate a valid random ship placement into px,py */
302 ss->dir = rnd(2) ? E : S;
303 ss->x = rnd(BWIDTH - (ss->dir == E ? ss->length : 0));
304 ss->y = rnd(BDEPTH - (ss->dir == S ? ss->length : 0));
306 (!checkplace(b, ss, FALSE));
316 (void) mvaddstr(0, 35, "BATTLESHIPS");
317 (void) move(PROMPTLINE + 2, 0);
320 memset(board, 0, sizeof(char) * BWIDTH * BDEPTH * 2);
321 memset(hits, 0, sizeof(char) * BWIDTH * BDEPTH * 2);
322 for (i = 0; i < SHIPTYPES; i++) {
340 /* draw empty boards */
341 (void) mvaddstr(PYBASE - 2, PXBASE + 5, "Main Board");
342 (void) mvaddstr(PYBASE - 1, PXBASE - 3, numbers);
343 for (i = 0; i < BDEPTH; ++i) {
344 (void) mvaddch(PYBASE + i, PXBASE - 3, (chtype) (i + 'A'));
347 attron(COLOR_PAIR(COLOR_BLUE));
350 for (j = 0; j < BWIDTH; j++)
351 (void) addstr(" . ");
356 (void) addch((chtype) (i + 'A'));
358 (void) mvaddstr(PYBASE + BDEPTH, PXBASE - 3, numbers);
359 (void) mvaddstr(CYBASE - 2, CXBASE + 7, "Hit/Miss Board");
360 (void) mvaddstr(CYBASE - 1, CXBASE - 3, numbers);
361 for (i = 0; i < BDEPTH; ++i) {
362 (void) mvaddch(CYBASE + i, CXBASE - 3, (chtype) (i + 'A'));
365 attron(COLOR_PAIR(COLOR_BLUE));
368 for (j = 0; j < BWIDTH; j++)
369 (void) addstr(" . ");
374 (void) addch((chtype) (i + 'A'));
377 (void) mvaddstr(CYBASE + BDEPTH, CXBASE - 3, numbers);
379 (void) mvprintw(HYBASE, HXBASE,
380 "To position your ships: move the cursor to a spot, then");
381 (void) mvprintw(HYBASE + 1, HXBASE,
382 "type the first letter of a ship type to select it, then");
383 (void) mvprintw(HYBASE + 2, HXBASE,
384 "type a direction ([hjkl] or [4862]), indicating how the");
385 (void) mvprintw(HYBASE + 3, HXBASE,
386 "ship should be pointed. You may also type a ship letter");
387 (void) mvprintw(HYBASE + 4, HXBASE,
388 "followed by `r' to position it randomly, or type `R' to");
389 (void) mvprintw(HYBASE + 5, HXBASE,
390 "place all remaining ships randomly.");
392 (void) mvaddstr(MYBASE, MXBASE, "Aiming keys:");
393 (void) mvaddstr(SYBASE, SXBASE, "y k u 7 8 9");
394 (void) mvaddstr(SYBASE + 1, SXBASE, " \\|/ \\|/ ");
395 (void) mvaddstr(SYBASE + 2, SXBASE, "h-+-l 4-+-6");
396 (void) mvaddstr(SYBASE + 3, SXBASE, " /|\\ /|\\ ");
397 (void) mvaddstr(SYBASE + 4, SXBASE, "b j n 1 2 3");
399 /* have the computer place ships */
400 for (ss = cpuship; ss < cpuship + SHIPTYPES; ss++) {
401 randomplace(COMPUTER, ss);
402 placeship(COMPUTER, ss, FALSE);
405 ss = (ship_t *) NULL;
407 char c, docked[SHIPTYPES + 2], *cp = docked;
409 /* figure which ships still wait to be placed */
411 for (i = 0; i < SHIPTYPES; i++)
412 if (!plyship[i].placed)
413 *cp++ = plyship[i].symbol;
416 /* get a command letter */
417 prompt(1, "Type one of [%s] to pick a ship.", docked + 1);
419 c = getcoord(PLAYER);
421 (!strchr(docked, c));
426 /* map that into the corresponding symbol */
427 for (ss = plyship; ss < plyship + SHIPTYPES; ss++)
431 prompt(1, "Type one of [hjklrR] to place your %s.", ss->name);
438 (!strchr("hjklrR", c) || c == FF);
441 (void) clearok(stdscr, TRUE);
443 } else if (c == 'r') {
444 prompt(1, "Random-placing your %s", ss->name);
445 randomplace(PLAYER, ss);
446 placeship(PLAYER, ss, TRUE);
447 error((char *) NULL);
449 } else if (c == 'R') {
450 prompt(1, "Placing the rest of your fleet at random...", "");
451 for (ss = plyship; ss < plyship + SHIPTYPES; ss++)
453 randomplace(PLAYER, ss);
454 placeship(PLAYER, ss, TRUE);
457 error((char *) NULL);
458 } else if (strchr("hjkl8462", c)) {
481 if (checkplace(PLAYER, ss, TRUE)) {
482 placeship(PLAYER, ss, TRUE);
483 error((char *) NULL);
488 for (unplaced = i = 0; i < SHIPTYPES; i++)
489 unplaced += !plyship[i].placed;
495 (void) mvprintw(HYBASE, HXBASE,
496 "To fire, move the cursor to your chosen aiming point ");
497 (void) mvprintw(HYBASE + 1, HXBASE,
498 "and strike any key other than a motion key. ");
499 (void) mvprintw(HYBASE + 2, HXBASE,
501 (void) mvprintw(HYBASE + 3, HXBASE,
503 (void) mvprintw(HYBASE + 4, HXBASE,
505 (void) mvprintw(HYBASE + 5, HXBASE,
508 (void) prompt(0, "Press any key to start...", "");
524 (void) mvprintw(CYBASE + BDEPTH + 1, CXBASE + 11, "(%d, %c)",
528 (void) mvprintw(PYBASE + BDEPTH + 1, PXBASE + 11, "(%d, %c)",
533 switch (c = getch()) {
537 ny = cury + BDEPTH - 1;
550 nx = curx + BWIDTH - 1;
561 ny = cury + BDEPTH - 1;
562 nx = curx + BWIDTH - 1;
568 nx = curx + BWIDTH - 1;
573 ny = cury + BDEPTH - 1;
585 (void) clearok(stdscr, TRUE);
588 #ifdef NCURSES_MOUSE_VERSION
595 && myevent.y >= CY(0) && myevent.y <= CY(BDEPTH)
596 && myevent.x >= CX(0) && myevent.x <= CX(BDEPTH)) {
597 curx = CXINV(myevent.x);
598 cury = CYINV(myevent.y);
605 /* no fall through */
606 #endif /* NCURSES_MOUSE_VERSION */
610 (void) mvaddstr(CYBASE + BDEPTH + 1, CXBASE + 11, " ");
612 (void) mvaddstr(PYBASE + BDEPTH + 1, PXBASE + 11, " ");
622 collidecheck(int b, int y, int x)
623 /* is this location on the selected zboard adjacent to a ship? */
627 /* anything on the square */
628 if ((collide = IS_SHIP(board[b][x][y])) != FALSE)
631 /* anything on the neighbors */
635 for (i = 0; i < 8; i++) {
640 if (ONBOARD(xend, yend)
641 && IS_SHIP(board[b][xend][yend])) {
651 checkplace(int b, ship_t * ss, int vis)
655 /* first, check for board edges */
656 xend = ss->x + (ss->length - 1) * xincr[ss->dir];
657 yend = ss->y + (ss->length - 1) * yincr[ss->dir];
658 if (!ONBOARD(xend, yend)) {
662 error("Ship is hanging from the edge of the world");
665 error("Try fitting it on the board");
668 error("Figure I won't find it if you put it there?");
674 for (l = 0; l < ss->length; ++l) {
675 if (collidecheck(b, ss->y + l * yincr[ss->dir], ss->x + l * xincr[ss->dir])) {
679 error("There's already a ship there");
682 error("Collision alert! Aaaaaagh!");
685 error("Er, Admiral, what about the other ship?");
700 for (i = 0; i < 2; ++i) {
701 ss = (i) ? cpuship : plyship;
702 for (j = 0; j < SHIPTYPES; ++j, ++ss)
703 if (ss->length > ss->hits)
712 hitship(int x, int y)
713 /* register a hit on the targeted ship */
719 getyx(stdscr, oldy, oldx);
720 sb = (turn) ? plyship : cpuship;
721 if ((sym = board[OTHER][x][y]) == 0)
722 return ((ship_t *) NULL);
723 for (ss = sb; ss < sb + SHIPTYPES; ++ss)
724 if (ss->symbol == sym) {
725 if (++ss->hits < ss->length) /* still afloat? */
726 return ((ship_t *) NULL);
731 for (j = -1; j <= 1; j++) {
732 int bx = ss->x + j * xincr[(ss->dir + 2) % 8];
733 int by = ss->y + j * yincr[(ss->dir + 2) % 8];
735 for (i = -1; i <= ss->length; ++i) {
738 x1 = bx + i * xincr[ss->dir];
739 y1 = by + i * yincr[ss->dir];
740 if (ONBOARD(x1, y1)) {
741 hits[turn][x1][y1] = MARK_MISS;
742 if (turn % 2 == PLAYER) {
746 attron(COLOR_PAIR(COLOR_GREEN));
748 (void) addch(MARK_MISS);
754 (void) addch(SHOWSPLASH);
760 for (i = 0; i < ss->length; ++i) {
761 int x1 = ss->x + i * xincr[ss->dir];
762 int y1 = ss->y + i * yincr[ss->dir];
764 hits[turn][x1][y1] = ss->symbol;
765 if (turn % 2 == PLAYER) {
767 (void) addch((chtype) (ss->symbol));
772 attron(COLOR_PAIR(COLOR_RED));
774 (void) addch(SHOWHIT);
781 (void) move(oldy, oldx);
785 (void) move(oldy, oldx);
786 return ((ship_t *) NULL);
794 NCURSES_CONST char *m = NULL;
796 prompt(1, "Where do you want to shoot? ", "");
798 (void) getcoord(COMPUTER);
799 if (hits[PLAYER][curx][cury]) {
800 prompt(1, "You shelled this spot already! Try again.", "");
805 hit = IS_SHIP(board[COMPUTER][curx][cury]);
806 hits[PLAYER][curx][cury] = (hit ? MARK_HIT : MARK_MISS);
811 attron(COLOR_PAIR(COLOR_RED));
813 attron(COLOR_PAIR(COLOR_GREEN));
816 (void) addch((chtype) hits[PLAYER][curx][cury]);
821 prompt(1, "You %s.", hit ? "scored a hit" : "missed");
822 if (hit && (ss = hitship(curx, cury))) {
825 m = " You sank my %s!";
828 m = " I have this sinking feeling about my %s....";
831 m = " My %s has gone to Davy Jones's locker!";
834 m = " Glub, glub -- my %s is headed for the bottom!";
837 m = " You'll pick up survivors from my %s, I hope...!";
840 (void) printw(m, ss->name);
842 return (awinna() == -1);
860 for (s1 = s; *s1 && ch != *s1; ++s1)
863 (void) addch((chtype) ch);
871 randomfire(int *px, int *py)
872 /* random-fire routine -- implements simple diagonal-striping strategy */
874 static int turncount = 0;
875 static int srchstep = BEGINSTEP;
876 static int huntoffs; /* Offset on search strategy */
877 int ypossible[BWIDTH * BDEPTH], xpossible[BWIDTH * BDEPTH], nposs;
878 int ypreferred[BWIDTH * BDEPTH], xpreferred[BWIDTH * BDEPTH], npref;
881 if (turncount++ == 0)
882 huntoffs = rnd(srchstep);
884 /* first, list all possible moves */
886 for (x = 0; x < BWIDTH; x++)
887 for (y = 0; y < BDEPTH; y++)
888 if (!hits[COMPUTER][x][y]) {
889 xpossible[nposs] = x;
890 ypossible[nposs] = y;
892 if (((x + huntoffs) % srchstep) != (y % srchstep)) {
893 xpreferred[npref] = x;
894 ypreferred[npref] = y;
913 error("No moves possible?? Help!");
914 ExitProgram(EXIT_FAILURE);
924 cpufire(int x, int y)
925 /* fire away at given location */
930 hits[COMPUTER][x][y] = (hit = (board[PLAYER][x][y])) ? MARK_HIT : MARK_MISS;
931 (void) mvprintw(PROMPTLINE, 0,
932 "I shoot at %c%d. I %s!", y + 'A', x, hit ? "hit" :
934 if ((sunk = (hit && (ss = hitship(x, y)))) != 0)
935 (void) printw(" I've sunk your %s", ss->name);
942 attron(COLOR_PAIR(COLOR_RED));
944 attron(COLOR_PAIR(COLOR_GREEN));
947 (void) addch((chtype) (hit ? SHOWHIT : SHOWSPLASH));
952 return ((hit ? (sunk ? S_SUNK : S_HIT) : S_MISS) ? TRUE : FALSE);
956 * This code implements a fairly irregular FSM, so please forgive the rampant
957 * unstructuredness below. The five labels are states which need to be held
958 * between computer turns.
963 #define POSSIBLE(x, y) (ONBOARD(x, y) && !hits[COMPUTER][x][y])
964 #define RANDOM_FIRE 0
966 #define HUNT_DIRECT 2
968 #define REVERSE_JUMP 4
969 #define SECOND_PASS 5
970 static int next = RANDOM_FIRE;
973 int navail, x, y, d, n;
977 case RANDOM_FIRE: /* last shot was random and missed */
980 if (!(hit = cpufire(x, y)))
986 next = (hit == S_SUNK) ? RANDOM_FIRE : RANDOM_HIT;
990 case RANDOM_HIT: /* last shot was random and hit */
991 used[E / 2] = used[S / 2] = used[W / 2] = used[N / 2] = FALSE;
994 case HUNT_DIRECT: /* last shot hit, we're looking for ship's long axis */
995 for (d = navail = 0; d < 4; d++) {
996 x = ts.x + xincr[d * 2];
997 y = ts.y + yincr[d * 2];
998 if (!used[d] && POSSIBLE(x, y))
1003 if (navail == 0) /* no valid places for shots adjacent... */
1004 goto refire; /* ...so we must random-fire */
1006 for (d = 0, n = rnd(navail) + 1; n; n--)
1013 x = ts.x + xincr[d * 2];
1014 y = ts.y + yincr[d * 2];
1016 assert(POSSIBLE(x, y));
1018 if (!(hit = cpufire(x, y)))
1025 next = (hit == S_SUNK) ? RANDOM_FIRE : FIRST_PASS;
1030 case FIRST_PASS: /* we have a start and a direction now */
1031 x = ts.x + xincr[ts.dir];
1032 y = ts.y + yincr[ts.dir];
1033 if (POSSIBLE(x, y) && (hit = cpufire(x, y))) {
1037 next = (hit == S_SUNK) ? RANDOM_FIRE : FIRST_PASS;
1039 next = REVERSE_JUMP;
1042 case REVERSE_JUMP: /* nail down the ship's other end */
1044 x = ts.x + ts.hits * xincr[d];
1045 y = ts.y + ts.hits * yincr[d];
1046 if (POSSIBLE(x, y) && (hit = cpufire(x, y))) {
1051 next = (hit == S_SUNK) ? RANDOM_FIRE : SECOND_PASS;
1056 case SECOND_PASS: /* kill squares not caught on first pass */
1057 x = ts.x + xincr[ts.dir];
1058 y = ts.y + yincr[ts.dir];
1059 if (POSSIBLE(x, y) && (hit = cpufire(x, y))) {
1063 next = (hit == S_SUNK) ? RANDOM_FIRE : SECOND_PASS;
1070 /* check for continuation and/or winner */
1079 (void) mvprintw(PROMPTLINE + 2, 0,
1080 "New state %d, x=%d, y=%d, d=%d",
1083 return ((hit) ? TRUE : FALSE);
1092 for (ss = cpuship; ss < cpuship + SHIPTYPES; ss++)
1093 for (j = 0; j < ss->length; j++) {
1094 cgoto(ss->y + j * yincr[ss->dir], ss->x + j * xincr[ss->dir]);
1095 (void) addch((chtype) ss->symbol);
1102 j = 18 + strlen(name);
1107 (void) mvprintw(1, (COLWIDTH - j) / 2,
1108 "%s: %d Computer: %d", name, plywon, cpuwon);
1110 prompt(2, (awinna())? "Want to be humiliated again, %s [yn]? "
1111 : "Going to give me a chance for revenge, %s [yn]? ", name);
1112 return (sgetc("YN") == 'Y');
1116 do_options(int c, char *op[])
1121 for (i = 1; i < c; i++) {
1125 (void) fprintf(stderr, "Usage: battle [-s | -b] [-c]\n");
1126 (void) fprintf(stderr, "\tWhere the options are:\n");
1127 (void) fprintf(stderr, "\t-s : play a salvo game\n");
1128 (void) fprintf(stderr, "\t-b : play a blitz game\n");
1129 (void) fprintf(stderr, "\t-c : ships may be adjacent\n");
1130 ExitProgram(EXIT_FAILURE);
1137 (void) fprintf(stderr,
1138 "Bad Arg: -b and -s are mutually exclusive\n");
1139 ExitProgram(EXIT_FAILURE);
1145 (void) fprintf(stderr,
1146 "Bad Arg: -s and -b are mutually exclusive\n");
1147 ExitProgram(EXIT_FAILURE);
1154 (void) fprintf(stderr,
1155 "Bad arg: type \"%s ?\" for usage message\n",
1157 ExitProgram(EXIT_FAILURE);
1167 register int i, shots;
1168 register ship_t *sp;
1171 sp = cpuship; /* count cpu shots */
1173 sp = plyship; /* count player shots */
1175 for (i = 0, shots = 0; i < SHIPTYPES; i++, sp++) {
1176 if (sp->hits >= sp->length)
1177 continue; /* dead ship */
1185 main(int argc, char *argv[])
1187 setlocale(LC_ALL, "");
1189 do_options(argc, argv);
1194 while (awinna() == -1) {
1207 if (cputurn() && awinna() != -1)
1210 if (plyturn() && awinna() != -1)
1216 while (turn ? cputurn() : plyturn())
1226 /* bs.c ends here */