153 lines
4.3 KiB
C
153 lines
4.3 KiB
C
/* $NetBSD: rain.c,v 1.21 2008/08/08 16:10:47 drochner 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\
|
|
The Regents of the University of California. All rights reserved.");
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)rain.c 8.1 (Berkeley) 5/31/93";
|
|
#else
|
|
__RCSID("$NetBSD: rain.c,v 1.21 2008/08/08 16:10:47 drochner Exp $");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* rain 11/3/1980 EPS/CITHEP
|
|
* cc rain.c -o rain -O -ltermlib
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <curses.h>
|
|
#include <err.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
|
|
static volatile sig_atomic_t sig_caught = 0;
|
|
|
|
int main(int, char **);
|
|
static void onsig(int);
|
|
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int x, y, j;
|
|
long cols, lines;
|
|
unsigned int delay = 0;
|
|
unsigned long val = 0;
|
|
int ch;
|
|
char *ep;
|
|
int xpos[5], ypos[5];
|
|
|
|
while ((ch = getopt(argc, argv, "d:")) != -1)
|
|
switch (ch) {
|
|
case 'd':
|
|
val = strtoul(optarg, &ep, 0);
|
|
if (ep == optarg || *ep)
|
|
errx(1, "Invalid delay `%s'", optarg);
|
|
if (errno == ERANGE && val == ULONG_MAX)
|
|
err(1, "Invalid delay `%s'", optarg);
|
|
if (val >= 1000)
|
|
errx(1, "Invalid delay `%s' (1-999)", optarg);
|
|
delay = (unsigned int)val * 1000; /* ms -> us */
|
|
break;
|
|
default:
|
|
(void)fprintf(stderr, "Usage: %s [-d delay]\n",
|
|
getprogname());
|
|
return 1;
|
|
}
|
|
|
|
if (!initscr())
|
|
errx(0, "couldn't initialize screen");
|
|
cols = COLS - 4;
|
|
lines = LINES - 4;
|
|
|
|
(void)signal(SIGHUP, onsig);
|
|
(void)signal(SIGINT, onsig);
|
|
(void)signal(SIGTERM, onsig);
|
|
|
|
(void)curs_set(0);
|
|
for (j = 4; j >= 0; --j) {
|
|
xpos[j] = random() % cols + 2;
|
|
ypos[j] = random() % lines + 2;
|
|
}
|
|
for (j = 0;;) {
|
|
if (sig_caught) {
|
|
(void)endwin();
|
|
exit(0);
|
|
}
|
|
x = random() % cols + 2;
|
|
y = random() % lines + 2;
|
|
(void)mvaddch(y, x, '.');
|
|
(void)mvaddch(ypos[j], xpos[j], 'o');
|
|
if (!j--)
|
|
j = 4;
|
|
(void)mvaddch(ypos[j], xpos[j], 'O');
|
|
if (!j--)
|
|
j = 4;
|
|
(void)mvaddch(ypos[j] - 1, xpos[j], '-');
|
|
(void)mvaddstr(ypos[j], xpos[j] - 1, "|.|");
|
|
(void)mvaddch(ypos[j] + 1, xpos[j], '-');
|
|
if (!j--)
|
|
j = 4;
|
|
(void)mvaddch(ypos[j] - 2, xpos[j], '-');
|
|
(void)mvaddstr(ypos[j] - 1, xpos[j] - 1, "/ \\");
|
|
(void)mvaddstr(ypos[j], xpos[j] - 2, "| O |");
|
|
(void)mvaddstr(ypos[j] + 1, xpos[j] - 1, "\\ /");
|
|
(void)mvaddch(ypos[j] + 2, xpos[j], '-');
|
|
if (!j--)
|
|
j = 4;
|
|
(void)mvaddch(ypos[j] - 2, xpos[j], ' ');
|
|
(void)mvaddstr(ypos[j] - 1, xpos[j] - 1, " ");
|
|
(void)mvaddstr(ypos[j], xpos[j] - 2, " ");
|
|
(void)mvaddstr(ypos[j] + 1, xpos[j] - 1, " ");
|
|
(void)mvaddch(ypos[j] + 2, xpos[j], ' ');
|
|
xpos[j] = x;
|
|
ypos[j] = y;
|
|
(void)refresh();
|
|
if (delay) (void)usleep(delay);
|
|
}
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
onsig(int dummy __unused)
|
|
{
|
|
sig_caught = 1;
|
|
}
|