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Samuel Sloniker 3 years ago
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  1. 10
      Makefile.bsd
  2. 36
      Makefrag
  3. 62
      worm.6
  4. 370
      worm.c

10
Makefile.bsd
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# $NetBSD: Makefile,v 1.6 1998/02/18 22:37:32 jtc Exp $
# @(#)Makefile 8.1 (Berkeley) 5/31/93
PROG= worm
MAN= worm.6
DPADD= ${LIBCURSES}
LDADD= -lcurses
HIDEGAME=hidegame
.include <bsd.prog.mk>

36
Makefrag
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# Makefrag - makefile fragment for worm
#
# Copyright (c) 1997, 1998 Joseph Samuel Myers.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
worm_DIRS := $(GAMESDIR) $(MAN6DIR)
worm_all: worm/worm worm/worm.6
worm_install: worm_all
$(INSTALL_BINARY) worm/worm $(INSTALL_PREFIX)$(GAMESDIR)/worm
$(HIDE_GAME) worm
$(INSTALL_MANUAL) worm/worm.6

62
worm.6
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.\" $NetBSD: worm.6,v 1.11 2004/01/01 16:06:57 jsm Exp $
.\"
.\" Copyright (c) 1989, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)worm.6 8.1 (Berkeley) 5/31/93
.\"
.Dd May 31, 1993
.Dt WORM 6
.Os
.Sh NAME
.Nm worm
.Nd Play the growing worm game
.Sh SYNOPSIS
.Nm
.Op Ar size
.Sh DESCRIPTION
In
.Nm ,
you are a little worm, your body is the "o"'s on the screen
and your head is the "@".
You move with the hjkl keys and the arrow keys (as in the game snake).
If you don't press any keys, you continue in the direction you last moved.
The upper case HJKL keys move you as if you had pressed
several (9 for HL and 5 for JK) of the corresponding lower case key
(unless you run into a digit, then it stops).
.Pp
On the screen you will see a digit, if your worm eats the digit is will
grow longer, the actual amount longer depends on which digit it was
that you ate.
The object of the game is to see how long you can make the worm grow.
.Pp
The game ends when the worm runs into either the sides of the screen,
or itself.
The current score (how much the worm has grown) is kept in
the upper right corner of the screen.
.Pp
The optional argument, if present, is the initial length of the worm.

370
worm.c
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/* $NetBSD: worm.c,v 1.25 2004/01/27 20:30:31 jsm Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)worm.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: worm.c,v 1.25 2004/01/27 20:30:31 jsm Exp $");
#endif
#endif /* not lint */
/*
* Worm. Written by Michael Toy
* UCSC
*/
#include <ctype.h>
#include <curses.h>
#include <err.h>
#include <signal.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#define newlink() (struct body *) malloc(sizeof (struct body));
#define HEAD '@'
#define BODY 'o'
#define LENGTH 7
#define RUNLEN 8
#define CNTRL(p) (p-'A'+1)
WINDOW *tv;
WINDOW *stw;
struct body {
int x;
int y;
struct body *prev;
struct body *next;
} *head, *tail, goody;
int growing = 0;
int running = 0;
int slow = 0;
int score = 0;
int start_len = LENGTH;
int visible_len;
int lastch;
char outbuf[BUFSIZ];
void crash(void) __attribute__((__noreturn__));
void display(const struct body *, char);
int main(int, char **);
void leave(int) __attribute__((__noreturn__));
void life(void);
void newpos(struct body *);
void process(int);
void prize(void);
int rnd(int);
void setup(void);
void wake(int);
int
main(argc, argv)
int argc;
char **argv;
{
/* Revoke setgid privileges */
setregid(getgid(), getgid());
setbuf(stdout, outbuf);
srand(getpid());
signal(SIGALRM, wake);
signal(SIGINT, leave);
signal(SIGQUIT, leave);
initscr();
cbreak();
noecho();
#ifdef KEY_LEFT
keypad(stdscr, TRUE);
#endif
slow = (baudrate() <= 1200);
clear();
if (COLS < 18 || LINES < 5) {
/*
* Insufficient room for the line with " Worm" and the
* score if fewer than 18 columns; insufficient room for
* anything much if fewer than 5 lines.
*/
endwin();
errx(1, "screen too small");
}
if (argc == 2)
start_len = atoi(argv[1]);
if ((start_len <= 0) || (start_len > ((LINES-3) * (COLS-2)) / 3))
start_len = LENGTH;
stw = newwin(1, COLS-1, 0, 0);
tv = newwin(LINES-1, COLS-1, 1, 0);
box(tv, '*', '*');
scrollok(tv, FALSE);
scrollok(stw, FALSE);
wmove(stw, 0, 0);
wprintw(stw, " Worm");
refresh();
wrefresh(stw);
wrefresh(tv);
life(); /* Create the worm */
prize(); /* Put up a goal */
while(1)
{
if (running)
{
running--;
process(lastch);
}
else
{
fflush(stdout);
process(getch());
}
}
}
void
life()
{
struct body *bp, *np;
int i, j = 1;
np = NULL;
head = newlink();
if (head == NULL)
err(1, NULL);
head->x = start_len % (COLS-5) + 2;
head->y = LINES / 2;
head->next = NULL;
display(head, HEAD);
for (i = 0, bp = head; i < start_len; i++, bp = np) {
np = newlink();
if (np == NULL)
err(1, NULL);
np->next = bp;
bp->prev = np;
if (((bp->x <= 2) && (j == 1)) || ((bp->x >= COLS-4) && (j == -1))) {
j *= -1;
np->x = bp->x;
np->y = bp->y + 1;
} else {
np->x = bp->x - j;
np->y = bp->y;
}
display(np, BODY);
}
tail = np;
tail->prev = NULL;
visible_len = start_len + 1;
}
void
display(pos, chr)
const struct body *pos;
char chr;
{
wmove(tv, pos->y, pos->x);
waddch(tv, chr);
}
void
leave(dummy)
int dummy;
{
endwin();
if (dummy == 0){ /* called via crash() */
printf("\nWell, you ran into something and the game is over.\n");
printf("Your final score was %d\n\n", score);
}
exit(0);
}
void
wake(dummy)
int dummy __attribute__((__unused__));
{
signal(SIGALRM, wake);
fflush(stdout);
process(lastch);
}
int
rnd(range)
int range;
{
return abs((rand()>>5)+(rand()>>5)) % range;
}
void
newpos(bp)
struct body * bp;
{
if (visible_len == (LINES-3) * (COLS-3) - 1) {
endwin();
printf("\nYou won!\n");
printf("Your final score was %d\n\n", score);
exit(0);
}
do {
bp->y = rnd(LINES-3)+ 1;
bp->x = rnd(COLS-3) + 1;
wmove(tv, bp->y, bp->x);
} while(winch(tv) != ' ');
}
void
prize()
{
int value;
value = rnd(9) + 1;
newpos(&goody);
waddch(tv, value+'0');
wrefresh(tv);
}
void
process(ch)
int ch;
{
int x,y;
struct body *nh;
alarm(0);
x = head->x;
y = head->y;
switch(ch)
{
#ifdef KEY_LEFT
case KEY_LEFT:
#endif
case 'h':
x--; break;
#ifdef KEY_DOWN
case KEY_DOWN:
#endif
case 'j':
y++; break;
#ifdef KEY_UP
case KEY_UP:
#endif
case 'k':
y--; break;
#ifdef KEY_RIGHT
case KEY_RIGHT:
#endif
case 'l':
x++; break;
case 'H': x--; running = RUNLEN; ch = tolower(ch); break;
case 'J': y++; running = RUNLEN/2; ch = tolower(ch); break;
case 'K': y--; running = RUNLEN/2; ch = tolower(ch); break;
case 'L': x++; running = RUNLEN; ch = tolower(ch); break;
case '\f': setup(); return;
case ERR:
case CNTRL('C'):
case CNTRL('D'):
crash();
return;
default: if (! running) alarm(1);
return;
}
lastch = ch;
if (growing == 0)
{
display(tail, ' ');
tail->next->prev = NULL;
nh = tail->next;
free(tail);
tail = nh;
visible_len--;
}
else growing--;
display(head, BODY);
wmove(tv, y, x);
if (isdigit(ch = winch(tv)))
{
growing += ch-'0';
prize();
score += growing;
running = 0;
wmove(stw, 0, COLS - 12);
wprintw(stw, "Score: %3d", score);
wrefresh(stw);
}
else if(ch != ' ') crash();
nh = newlink();
if (nh == NULL)
err(1, NULL);
nh->next = NULL;
nh->prev = head;
head->next = nh;
nh->y = y;
nh->x = x;
display(nh, HEAD);
head = nh;
visible_len++;
if (!(slow && running))
{
wmove(tv, head->y, head->x);
wrefresh(tv);
}
if (!running)
alarm(1);
}
void
crash()
{
leave(0);
}
void
setup()
{
clear();
refresh();
touchwin(stw);
wrefresh(stw);
touchwin(tv);
wrefresh(tv);
alarm(1);
}
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