4.4BSD/usr/src/games/rain/rain.c
/*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1980, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)rain.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
/*
* rain 11/3/1980 EPS/CITHEP
* cc rain.c -o rain -O -ltermlib
*/
#include <sys/types.h>
#include <stdio.h>
#ifdef USG
#include <termio.h>
#else
#include <sgtty.h>
#endif
#include <signal.h>
#define cursor(c, r) tputs(tgoto(CM, c, r), 1, fputchar)
#ifdef USG
static struct termio sg, old_tty;
#else
static struct sgttyb sg, old_tty;
#endif
int fputchar();
char *LL, *TE, *tgoto();
main(argc, argv)
int argc;
char **argv;
{
extern short ospeed;
extern char *UP;
register int x, y, j;
register char *CM, *BC, *DN, *ND, *term;
char *TI, *tcp, *mp, tcb[100],
*malloc(), *getenv(), *strcpy(), *tgetstr();
long cols, lines, random();
int xpos[5], ypos[5];
static void onsig();
if (!(term = getenv("TERM"))) {
fprintf(stderr, "%s: TERM: parameter not set\n", *argv);
exit(1);
}
if (!(mp = malloc((u_int)1024))) {
fprintf(stderr, "%s: out of space.\n", *argv);
exit(1);
}
if (tgetent(mp, term) <= 0) {
fprintf(stderr, "%s: %s: unknown terminal type\n", *argv, term);
exit(1);
}
tcp = tcb;
if (!(CM = tgetstr("cm", &tcp))) {
fprintf(stderr, "%s: terminal not capable of cursor motion\n", *argv);
exit(1);
}
if (!(BC = tgetstr("bc", &tcp)))
BC = "\b";
if (!(DN = tgetstr("dn", &tcp)))
DN = "\n";
if (!(ND = tgetstr("nd", &tcp)))
ND = " ";
if ((cols = tgetnum("co")) == -1)
cols = 80;
if ((lines = tgetnum("li")) == -1)
lines = 24;
cols -= 4;
lines -= 4;
TE = tgetstr("te", &tcp);
TI = tgetstr("ti", &tcp);
UP = tgetstr("up", &tcp);
if (!(LL = tgetstr("ll", &tcp))) {
if (!(LL = malloc((u_int)10))) {
fprintf(stderr, "%s: out of space.\n", *argv);
exit(1);
}
(void)strcpy(LL, tgoto(CM, 0, 23));
}
#ifdef USG
ioctl(1, TCGETA, &sg);
ospeed = sg.c_cflag&CBAUD;
#else
gtty(1, &sg);
ospeed = sg.sg_ospeed;
#endif
(void)signal(SIGHUP, onsig);
(void)signal(SIGINT, onsig);
(void)signal(SIGQUIT, onsig);
(void)signal(SIGSTOP, onsig);
(void)signal(SIGTSTP, onsig);
(void)signal(SIGTERM, onsig);
#ifdef USG
ioctl(1, TCGETA, &old_tty); /* save tty bits for exit */
ioctl(1, TCGETA, &sg);
sg.c_iflag &= ~ICRNL;
sg.c_oflag &= ~ONLCR;
sg.c_lflag &= ~ECHO;
ioctl(1, TCSETAW, &sg);
#else
gtty(1, &old_tty); /* save tty bits for exit */
gtty(1, &sg);
sg.sg_flags &= ~(CRMOD|ECHO);
stty(1, &sg);
#endif
if (TI)
tputs(TI, 1, fputchar);
tputs(tgetstr("cl", &tcp), 1, fputchar);
(void)fflush(stdout);
for (j = 4; j >= 0; --j) {
xpos[j] = random() % cols + 2;
ypos[j] = random() % lines + 2;
}
for (j = 0;;) {
x = random() % cols + 2;
y = random() % lines + 2;
cursor(x, y);
fputchar('.');
cursor(xpos[j], ypos[j]);
fputchar('o');
if (!j--)
j = 4;
cursor(xpos[j], ypos[j]);
fputchar('O');
if (!j--)
j = 4;
cursor(xpos[j], ypos[j] - 1);
fputchar('-');
tputs(DN, 1, fputchar);
tputs(BC, 1, fputchar);
tputs(BC, 1, fputchar);
fputs("|.|", stdout);
tputs(DN, 1, fputchar);
tputs(BC, 1, fputchar);
tputs(BC, 1, fputchar);
fputchar('-');
if (!j--)
j = 4;
cursor(xpos[j], ypos[j] - 2);
fputchar('-');
tputs(DN, 1, fputchar);
tputs(BC, 1, fputchar);
tputs(BC, 1, fputchar);
fputs("/ \\", stdout);
cursor(xpos[j] - 2, ypos[j]);
fputs("| O |", stdout);
cursor(xpos[j] - 1, ypos[j] + 1);
fputs("\\ /", stdout);
tputs(DN, 1, fputchar);
tputs(BC, 1, fputchar);
tputs(BC, 1, fputchar);
fputchar('-');
if (!j--)
j = 4;
cursor(xpos[j], ypos[j] - 2);
fputchar(' ');
tputs(DN, 1, fputchar);
tputs(BC, 1, fputchar);
tputs(BC, 1, fputchar);
fputchar(' ');
tputs(ND, 1, fputchar);
fputchar(' ');
cursor(xpos[j] - 2, ypos[j]);
fputchar(' ');
tputs(ND, 1, fputchar);
fputchar(' ');
tputs(ND, 1, fputchar);
fputchar(' ');
cursor(xpos[j] - 1, ypos[j] + 1);
fputchar(' ');
tputs(ND, 1, fputchar);
fputchar(' ');
tputs(DN, 1, fputchar);
tputs(BC, 1, fputchar);
tputs(BC, 1, fputchar);
fputchar(' ');
xpos[j] = x;
ypos[j] = y;
(void)fflush(stdout);
}
}
static void
onsig()
{
tputs(LL, 1, fputchar);
if (TE)
tputs(TE, 1, fputchar);
(void)fflush(stdout);
#ifdef USG
ioctl(1, TCSETAW, &old_tty);
#else
stty(1, &old_tty);
#endif
exit(0);
}
int
fputchar(c)
int c;
{
putchar(c);
}