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NetBSD/games/hack/hack.termcap.c
jsm 1c7f94e505 Hack is now BSD-licensed. Thanks to Andries Brouwer, Jay Fenlason and 
CWI <http://www.cwi.nl/~aeb/games/hack/hack.html>.  Via OpenBSD.
Addresses part of PR bin/5850.
2003-04-02 18:36:33 +00:00

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/* $NetBSD: hack.termcap.c,v 1.12 2003/04/02 18:36:40 jsm Exp $ */
/*
* Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
* Amsterdam
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the Stichting Centrum voor Wiskunde en
* Informatica, 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER
* 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.
*/
/*
* Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
* 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 ``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.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: hack.termcap.c,v 1.12 2003/04/02 18:36:40 jsm Exp $");
#endif /* not lint */
#include <string.h>
#include <termios.h>
#include <termcap.h>
#include <stdlib.h>
#include <unistd.h>
#include "hack.h"
#include "extern.h"
#include "def.flag.h" /* for flags.nonull */
static struct tinfo *info;
static char *HO, *CL, *CE, *UP, *CM, *ND, *XD, *BC, *SO, *SE, *TI, *TE;
static char *VS, *VE;
static int SG;
static char PC = '\0';
static char BC_char = '\b'; /* if bc is not set use this */
char *CD; /* tested in pri.c: docorner() */
int CO, LI; /* used in pri.c and whatis.c */
void
startup()
{
char *term;
char *pc;
if (!(term = getenv("TERM")))
error("Can't get TERM.");
if (!strncmp(term, "5620", 4))
flags.nonull = 1; /* this should be a termcap flag */
if (t_getent(&info, term) < 1)
error("Unknown terminal type: %s.", term);
if ((pc = t_agetstr(info, "pc")) != NULL)
PC = *pc;
if (!(BC = t_agetstr(info, "bc"))) {
if (!t_getflag(info, "bs"))
error("Terminal must backspace.");
BC = &BC_char;
}
HO = t_agetstr(info, "ho");
CO = t_getnum(info, "co");
LI = t_getnum(info, "li");
if (CO < COLNO || LI < ROWNO + 2)
setclipped();
if (!(CL = t_agetstr(info, "cl")))
error("Hack needs CL.");
ND = t_agetstr(info, "nd");
if (t_getflag(info, "os"))
error("Hack can't have OS.");
CE = t_agetstr(info, "ce");
UP = t_agetstr(info, "up");
/*
* It seems that xd is no longer supported, and we should use a
* linefeed instead; unfortunately this requires resetting CRMOD, and
* many output routines will have to be modified slightly. Let's
* leave that till the next release.
*/
XD = t_agetstr(info, "xd");
/* not: XD = t_agetstr(info, "do"); */
if (!(CM = t_agetstr(info, "cm"))) {
if (!UP && !HO)
error("Hack needs CM or UP or HO.");
printf("Playing hack on terminals without cm is suspect...\n");
getret();
}
SO = t_agetstr(info, "so");
SE = t_agetstr(info, "se");
SG = t_getnum(info, "sg"); /* -1: not fnd; else # of spaces left by so */
if (!SO || !SE || (SG > 0))
SO = SE = 0;
CD = t_agetstr(info, "cd");
set_whole_screen(); /* uses LI and CD */
}
void
start_screen()
{
xputs(TI);
xputs(VS);
}
void
end_screen()
{
xputs(VE);
xputs(TE);
}
/* Cursor movements */
void
curs(x, y)
int x, y; /* not xchar: perhaps xchar is unsigned and
* curx-x would be unsigned as well */
{
if (y == cury && x == curx)
return;
if (!ND && (curx != x || x <= 3)) { /* Extremely primitive */
cmov(x, y); /* bunker!wtm */
return;
}
if (abs(cury - y) <= 3 && abs(curx - x) <= 3)
nocmov(x, y);
else if ((x <= 3 && abs(cury - y) <= 3) || (!CM && x < abs(curx - x))) {
(void) putchar('\r');
curx = 1;
nocmov(x, y);
} else if (!CM) {
nocmov(x, y);
} else
cmov(x, y);
}
void
nocmov(x, y)
int x, y;
{
if (cury > y) {
if (UP) {
while (cury > y) { /* Go up. */
xputs(UP);
cury--;
}
} else if (CM) {
cmov(x, y);
} else if (HO) {
home();
curs(x, y);
} /* else impossible("..."); */
} else if (cury < y) {
if (XD) {
while (cury < y) {
xputs(XD);
cury++;
}
} else if (CM) {
cmov(x, y);
} else {
while (cury < y) {
xputc('\n');
curx = 1;
cury++;
}
}
}
if (curx < x) { /* Go to the right. */
if (!ND)
cmov(x, y);
else /* bah */
/* should instead print what is there already */
while (curx < x) {
xputs(ND);
curx++;
}
} else if (curx > x) {
while (curx > x) { /* Go to the left. */
xputs(BC);
curx--;
}
}
}
void
cmov(x, y)
int x, y;
{
char buf[256];
if (t_goto(info, CM, x - 1, y - 1, buf, 255) >= 0) {
xputs(buf);
cury = y;
curx = x;
}
}
int
xputc(c)
char c;
{
return (fputc(c, stdout));
}
void
xputs(s)
char *s;
{
tputs(s, 1, xputc);
}
void
cl_end()
{
if (CE)
xputs(CE);
else { /* no-CE fix - free after Harold Rynes */
/*
* this looks terrible, especially on a slow terminal but is
* better than nothing
*/
int cx = curx, cy = cury;
while (curx < COLNO) {
xputc(' ');
curx++;
}
curs(cx, cy);
}
}
void
clear_screen()
{
xputs(CL);
curx = cury = 1;
}
void
home()
{
char buf[256];
if (HO)
xputs(HO);
else if ((CM) && (t_goto(info, CM, 0, 0, buf, 255) >= 0))
xputs(buf);
else
curs(1, 1); /* using UP ... */
curx = cury = 1;
}
void
standoutbeg()
{
if (SO)
xputs(SO);
}
void
standoutend()
{
if (SE)
xputs(SE);
}
void
backsp()
{
xputs(BC);
curx--;
}
void
bell()
{
(void) putchar('\007'); /* curx does not change */
(void) fflush(stdout);
}
void
delay_output()
{
/* delay 50 ms - could also use a 'nap'-system call */
/* or the usleep call like this :-) */
usleep(50000);
}
void
cl_eos()
{ /* free after Robert Viduya *//* must only be
* called with curx = 1 */
if (CD)
xputs(CD);
else {
int cx = curx, cy = cury;
while (cury <= LI - 2) {
cl_end();
xputc('\n');
curx = 1;
cury++;
}
cl_end();
curs(cx, cy);
}
}
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