bs.c

一个C格式的脚本处理函数库源代码,可让你的C程序具有执行C格式的脚本文件

/* 
 * bs.c - original author: Bruce Holloway
 *		salvo option by: Chuck A DeGaul
 * with improved user interface, autoconfiguration and code cleanup
 *		by Eric S. Raymond <[e-mail]>
 * 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
 */
/* #define _POSIX_SOURCE -- incompatible with solaris termios.h */

#include <signal.h>
#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <assert.h>
#include <time.h>

#if HAVE_TERMIOS_H
#include <sys/termios.h>	/* required before solaris curses.h */
#endif

#include <curses.h>

#ifndef SIGIOT
#define SIGIOT SIGABRT
#endif

#ifndef A_UNDERLINE	/* BSD curses */
#define	beep()	write(1,"\007",1);
#define	cbreak	crmode
#define	saveterm savetty
#define	resetterm resetty
#define	nocbreak nocrmode
#define strchr	index
#endif /* !A_UNDERLINE */

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(c)

/* 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 */
    unsigned hits;	/* how many times has this ship been hit? */
    char symbol;	/* symbol for game purposes */
    char length;	/* length of ship */
    char x, y;		/* coordinates of ship start point */
    unsigned char 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);

ship_t plyship[SHIPTYPES] =
{
    { carrier,	0, 'A', 5},
    { battle,	0, 'B', 4},
    { destroy,	0, 'D', 3},
    { sub,	0, 'S', 3},
    { ptboat,	0, 'P', 2},
};

ship_t cpuship[SHIPTYPES] =
{
    { carrier,	0, 'A', 5},
    { battle,	0, 'B', 4},
    { destroy,	0, 'D', 3},
    { sub,	0, 'S', 3},
    { ptboat,	0, 'P', 2},
};

/* "Hits" board, and main board. */
static char hits[2][BWIDTH][BDEPTH], 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)
/* end the game, either normally or due to signal */
{
    clear();
    (void)refresh();
    (void)resetterm();
    (void)echo();
    (void)endwin();
    exit(sig);
}

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)
{
    extern char *getlogin(void);
    char *tmpname;

    srand((unsigned)(time(0L)+getpid()));	/* Kick the random number generator */

    (void) signal(SIGINT,uninitgame);
    (void) signal(SIGINT,uninitgame);
    (void) signal(SIGIOT,uninitgame);		/* for assert(3) */
    if(signal(SIGQUIT,SIG_IGN) != SIG_IGN)
	(void)signal(SIGQUIT,uninitgame);

    if((tmpname = getlogin()) != 0)
    {
	(void)strcpy(name,tmpname);
	name[0] = toupper(name[0]);
    }
    else
	(void)strcpy(name,dftname);

    (void)initscr();
#ifdef KEY_MIN
    keypad(stdscr, TRUE);
#endif /* KEY_MIN */
    (void)saveterm();
    (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, char *f, 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(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 */
{
    register int bwidth = BWIDTH - ss->length;
    register int bdepth = BDEPTH - ss->length;

    do {
	ss->y = rnd(bdepth);
	ss->x = rnd(bwidth);
	ss->dir = rnd(2) ? E : S;
    } 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 = ss->placed = 0;
	ss = plyship + i;
	ss->x = ss->y = ss->dir = ss->hits = ss->placed = 0;
    }

    /* 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')
	{
	    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);

    (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':
#ifdef KEY_MIN
	case KEY_UP:
#endif /* KEY_MIN */
	    ny = cury+BDEPTH-1; nx = curx;
	    break;
	case 'j': case '2':
#ifdef KEY_MIN
	case KEY_DOWN:
#endif /* KEY_MIN */
	    ny = cury+1;        nx = curx;
	    break;
	case 'h': case '4':
#ifdef KEY_MIN
	case KEY_LEFT:
#endif /* KEY_MIN */
	    ny = cury;          nx = curx+BWIDTH-1;
	    break;
	case 'l': case '6':
#ifdef KEY_MIN
	case KEY_RIGHT:
#endif /* KEY_MIN */
	    ny = cury;          nx = curx+1;
	    break;
	case 'y': case '7':
#ifdef KEY_MIN
	case KEY_A1:
#endif /* KEY_MIN */
	    ny = cury+BDEPTH-1; nx = curx+BWIDTH-1;
	    break;
	case 'b': case '1':
#ifdef KEY_MIN
	case KEY_C1:
#endif /* KEY_MIN */
	    ny = cury+1;        nx = curx+BWIDTH-1;
	    break;
	case 'u': case '9':
#ifdef KEY_MIN
	case KEY_A3:
#endif /* KEY_MIN */
	    ny = cury+BDEPTH-1; nx = curx+1;
	    break;
	case 'n': case '3':
#ifdef KEY_MIN
	case KEY_C3:
#endif /* KEY_MIN */
	    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);
	}