Update to ncurses-6.0
Change-Id: I98ab2ea8a5e13cca9f8b7cf6277b9b14a4da4299
diff --git a/test/bs.c b/test/bs.c
new file mode 100644
index 0000000..a74f643
--- /dev/null
+++ b/test/bs.c
@@ -0,0 +1,1261 @@
+/****************************************************************************
+ * Copyright (c) 1998-2013,2014 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 1.63 2014/08/09 22:27:12 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 *your_name;
+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 void uninitgame(int sig) GCC_NORETURN;
+
+static void
+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 &&
+ (your_name = strdup(tmpname)) != 0) {
+ your_name[0] = (char) toupper(UChar(your_name[0]));
+ } else {
+ your_name = dftname;
+ }
+
+ (void) initscr();
+ keypad(stdscr, TRUE);
+ (void) def_prog_mode();
+ (void) nonl();
+ (void) cbreak();
+ (void) noecho();
+
+#ifdef PENGUIN
+ (void) clear();
+ 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");
+
+ 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();
+ 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 */
+ MvAddStr(PYBASE - 2, PXBASE + 5, "Main Board");
+ MvAddStr(PYBASE - 1, PXBASE - 3, numbers);
+ for (i = 0; i < BDEPTH; ++i) {
+ 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
+ (void) attrset(0);
+#endif /* A_COLOR */
+ (void) addch(' ');
+ (void) addch((chtype) (i + 'A'));
+ }
+ MvAddStr(PYBASE + BDEPTH, PXBASE - 3, numbers);
+ MvAddStr(CYBASE - 2, CXBASE + 7, "Hit/Miss Board");
+ MvAddStr(CYBASE - 1, CXBASE - 3, numbers);
+ for (i = 0; i < BDEPTH; ++i) {
+ 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
+ (void) attrset(0);
+#endif /* A_COLOR */
+ (void) addch(' ');
+ (void) addch((chtype) (i + 'A'));
+ }
+
+ MvAddStr(CYBASE + BDEPTH, CXBASE - 3, numbers);
+
+ MvPrintw(HYBASE, HXBASE,
+ "To position your ships: move the cursor to a spot, then");
+ MvPrintw(HYBASE + 1, HXBASE,
+ "type the first letter of a ship type to select it, then");
+ MvPrintw(HYBASE + 2, HXBASE,
+ "type a direction ([hjkl] or [4862]), indicating how the");
+ MvPrintw(HYBASE + 3, HXBASE,
+ "ship should be pointed. You may also type a ship letter");
+ MvPrintw(HYBASE + 4, HXBASE,
+ "followed by `r' to position it randomly, or type `R' to");
+ MvPrintw(HYBASE + 5, HXBASE,
+ "place all remaining ships randomly.");
+
+ MvAddStr(MYBASE, MXBASE, "Aiming keys:");
+ MvAddStr(SYBASE, SXBASE, "y k u 7 8 9");
+ MvAddStr(SYBASE + 1, SXBASE, " \\|/ \\|/ ");
+ MvAddStr(SYBASE + 2, SXBASE, "h-+-l 4-+-6");
+ MvAddStr(SYBASE + 3, SXBASE, " /|\\ /|\\ ");
+ 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);
+ }
+
+ do {
+ char c, docked[SHIPTYPES + 2], *cp = docked;
+
+ ss = (ship_t *) NULL;
+
+ /* 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 = (char) 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 = (char) getch();
+ } while
+ (!(strchr("hjkl8462rR", c) || c == FF));
+
+ if (c == FF) {
+ (void) clearok(stdscr, TRUE);
+ (void) refresh();
+ } else if (ss == 0) {
+ beep(); /* simple to verify, unlikely to happen */
+ } else if (c == 'r') {
+ 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)) {
+ 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);
+
+ MvPrintw(HYBASE, HXBASE,
+ "To fire, move the cursor to your chosen aiming point ");
+ MvPrintw(HYBASE + 1, HXBASE,
+ "and strike any key other than a motion key. ");
+ MvPrintw(HYBASE + 2, HXBASE,
+ " ");
+ MvPrintw(HYBASE + 3, HXBASE,
+ " ");
+ MvPrintw(HYBASE + 4, HXBASE,
+ " ");
+ 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) {
+ MvPrintw(CYBASE + BDEPTH + 1, CXBASE + 11, "(%d, %c)",
+ curx, 'A' + cury);
+ cgoto(cury, curx);
+ } else {
+ 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)
+ MvAddStr(CYBASE + BDEPTH + 1, CXBASE + 11, " ");
+ else
+ 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
+ (void) 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
+ (void) 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] = (char) (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
+ (void) 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;
+ }
+ if (m != 0) {
+ (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;
+
+ hit = (bool) board[PLAYER][x][y];
+ hits[COMPUTER][x][y] = (hit ? MARK_HIT : MARK_MISS);
+ 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
+ (void) 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
+ 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 + (int) strlen(your_name);
+ if (plywon >= 10)
+ ++j;
+ if (cpuwon >= 10)
+ ++j;
+ MvPrintw(1, (COLWIDTH - j) / 2,
+ "%s: %d Computer: %d", your_name, plywon, cpuwon);
+
+ prompt(2, (awinna())? "Want to be humiliated again, %s [yn]? "
+ : "Going to give me a chance for revenge, %s [yn]? ", your_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 */