NetBSD/games/rain/rain.c

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/* $NetBSD: rain.c,v 1.10 1997/10/13 22:01:54 cjs Exp $ */
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/*
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* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
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*
* 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.
*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
#ifndef lint
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#if 0
static char sccsid[] = "@(#)rain.c 8.1 (Berkeley) 5/31/93";
#else
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__RCSID("$NetBSD: rain.c,v 1.10 1997/10/13 22:01:54 cjs Exp $");
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#endif
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#endif /* not lint */
/*
* rain 11/3/1980 EPS/CITHEP
* cc rain.c -o rain -O -ltermlib
*/
#include <sys/types.h>
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#include <sys/ioctl.h>
#include <err.h>
#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
#include <termcap.h>
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#include <termios.h>
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#define cursor(c, r) tputs(tgoto(CM, c, r), 1, fputchar)
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static struct termios sg, old_tty;
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void fputchar __P((int));
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int main __P((int, char **));
void onsig __P((int));
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char *LL, *TE;
int
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main(argc, argv)
int argc;
char **argv;
{
extern char *UP;
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int x, y, j;
char *CM, *BC, *DN, *ND, *term;
char *TI, *tcp, *mp, tcb[100];
long cols, lines;
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int xpos[5], ypos[5];
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#ifdef TIOCGWINSZ
struct winsize ws;
#endif
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if (!(term = getenv("TERM")))
errx(1, "TERM: parameter not set");
if (!(mp = malloc((u_int)1024)))
errx(1, "out of space");
if (tgetent(mp, term) <= 0)
errx(1, "unknown terminal type `%s'", term);
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tcp = tcb;
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if (!(CM = tgetstr("cm", &tcp)))
errx(1, "terminal not capable of cursor motion");
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if (!(BC = tgetstr("bc", &tcp)))
BC = "\b";
if (!(DN = tgetstr("dn", &tcp)))
DN = "\n";
if (!(ND = tgetstr("nd", &tcp)))
ND = " ";
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#ifdef TIOCGWINSZ
if (ioctl(fileno(stdout), TIOCGWINSZ, &ws) != -1 &&
ws.ws_col && ws.ws_row) {
cols = ws.ws_col;
lines = ws.ws_row;
} else
#endif
{
if ((cols = tgetnum("co")) == -1)
cols = 80;
if ((lines = tgetnum("li")) == -1)
lines = 24;
}
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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));
}
(void)signal(SIGHUP, onsig);
(void)signal(SIGINT, onsig);
(void)signal(SIGQUIT, onsig);
(void)signal(SIGSTOP, onsig);
(void)signal(SIGTSTP, onsig);
(void)signal(SIGTERM, onsig);
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tcgetattr(1, &sg);
old_tty = sg;
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sg.c_iflag &= ~ICRNL;
sg.c_oflag &= ~ONLCR;
sg.c_lflag &= ~ECHO;
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tcsetattr(1, TCSADRAIN, &sg);
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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);
}
}
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void
onsig(dummy)
int dummy;
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{
tputs(LL, 1, fputchar);
if (TE)
tputs(TE, 1, fputchar);
(void)fflush(stdout);
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tcsetattr(1, TCSADRAIN, &old_tty);
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exit(0);
}
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void
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fputchar(c)
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int c;
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{
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(void)putchar(c);
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}