NetBSD/games/hack/hack.termcap.c

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/* $NetBSD: hack.termcap.c,v 1.10 2000/05/20 14:01:42 blymn Exp $ */
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/*
* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985.
*/
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#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: hack.termcap.c,v 1.10 2000/05/20 14:01:42 blymn Exp $");
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#endif /* not lint */
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#include <string.h>
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#include <termios.h>
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#include <termcap.h>
#include <stdlib.h>
#include <unistd.h>
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#include "hack.h"
#include "extern.h"
#include "def.flag.h" /* for flags.nonull */
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static char *tbuf;
static struct tinfo *info;
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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 */
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char *CD; /* tested in pri.c: docorner() */
int CO, LI; /* used in pri.c and whatis.c */
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void
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startup()
{
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char *term;
char *tbufptr, *pc;
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tbuf = NULL;
if (!(term = getenv("TERM")))
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error("Can't get TERM.");
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if (!strncmp(term, "5620", 4))
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flags.nonull = 1; /* this should be a termcap flag */
if (t_getent(&info, term) < 1)
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error("Unknown terminal type: %s.", term);
if ((pc = t_agetstr(info, "pc", &tbuf, &tbufptr)) != NULL)
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PC = *pc;
if (!(BC = t_agetstr(info, "bc", &tbuf, &tbufptr))) {
if (!t_getflag(info, "bs"))
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error("Terminal must backspace.");
BC = &BC_char;
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}
HO = t_agetstr(info, "ho", &tbuf, &tbufptr);
CO = t_getnum(info, "co");
LI = t_getnum(info, "li");
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if (CO < COLNO || LI < ROWNO + 2)
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setclipped();
if (!(CL = t_agetstr(info, "cl", &tbuf, &tbufptr)))
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error("Hack needs CL.");
ND = t_agetstr(info, "nd", &tbuf, &tbufptr);
if (t_getflag(info, "os"))
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error("Hack can't have OS.");
CE = t_agetstr(info, "ce", &tbuf, &tbufptr);
UP = t_agetstr(info, "up", &tbuf, &tbufptr);
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/*
* 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", &tbuf, &tbufptr);
/* not: XD = t_agetstr(info, "do", &tbuf, &tbufptr); */
if (!(CM = t_agetstr(info, "cm", &tbuf, &tbufptr))) {
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if (!UP && !HO)
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error("Hack needs CM or UP or HO.");
printf("Playing hack on terminals without cm is suspect...\n");
getret();
}
SO = t_agetstr(info, "so", &tbuf, &tbufptr);
SE = t_agetstr(info, "se", &tbuf, &tbufptr);
SG = t_getnum(info, "sg"); /* -1: not fnd; else # of spaces left by so */
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if (!SO || !SE || (SG > 0))
SO = SE = 0;
CD = t_agetstr(info, "cd", &tbuf, &tbufptr);
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set_whole_screen(); /* uses LI and CD */
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}
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void
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start_screen()
{
xputs(TI);
xputs(VS);
}
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void
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end_screen()
{
xputs(VE);
xputs(TE);
}
/* Cursor movements */
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void
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curs(x, y)
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int x, y; /* not xchar: perhaps xchar is unsigned and
* curx-x would be unsigned as well */
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{
if (y == cury && x == curx)
return;
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if (!ND && (curx != x || x <= 3)) { /* Extremely primitive */
cmov(x, y); /* bunker!wtm */
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return;
}
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if (abs(cury - y) <= 3 && abs(curx - x) <= 3)
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nocmov(x, y);
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else if ((x <= 3 && abs(cury - y) <= 3) || (!CM && x < abs(curx - x))) {
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(void) putchar('\r');
curx = 1;
nocmov(x, y);
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} else if (!CM) {
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nocmov(x, y);
} else
cmov(x, y);
}
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void
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nocmov(x, y)
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int x, y;
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{
if (cury > y) {
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if (UP) {
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while (cury > y) { /* Go up. */
xputs(UP);
cury--;
}
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} else if (CM) {
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cmov(x, y);
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} else if (HO) {
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home();
curs(x, y);
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} /* else impossible("..."); */
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} else if (cury < y) {
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if (XD) {
while (cury < y) {
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xputs(XD);
cury++;
}
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} else if (CM) {
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cmov(x, y);
} else {
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while (cury < y) {
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xputc('\n');
curx = 1;
cury++;
}
}
}
if (curx < x) { /* Go to the right. */
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if (!ND)
cmov(x, y);
else /* bah */
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/* should instead print what is there already */
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while (curx < x) {
xputs(ND);
curx++;
}
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} else if (curx > x) {
while (curx > x) { /* Go to the left. */
xputs(BC);
curx--;
}
}
}
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void
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cmov(x, y)
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int x, y;
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{
char buf[256];
if (t_goto(info, CM, x - 1, y - 1, buf, 255) >= 0) {
xputs(buf);
cury = y;
curx = x;
}
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}
int
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xputc(c)
char c;
{
return (fputc(c, stdout));
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}
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void
xputs(s)
char *s;
{
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tputs(s, 1, xputc);
}
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void
cl_end()
{
if (CE)
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xputs(CE);
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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;
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while (curx < COLNO) {
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xputc(' ');
curx++;
}
curs(cx, cy);
}
}
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void
clear_screen()
{
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xputs(CL);
curx = cury = 1;
}
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void
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home()
{
char buf[256];
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if (HO)
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xputs(HO);
else if ((CM) && (t_goto(info, CM, 0, 0, buf, 255) >= 0))
xputs(buf);
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else
curs(1, 1); /* using UP ... */
curx = cury = 1;
}
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void
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standoutbeg()
{
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if (SO)
xputs(SO);
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}
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void
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standoutend()
{
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if (SE)
xputs(SE);
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}
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void
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backsp()
{
xputs(BC);
curx--;
}
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void
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bell()
{
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(void) putchar('\007'); /* curx does not change */
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(void) fflush(stdout);
}
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void
delay_output()
{
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/* delay 50 ms - could also use a 'nap'-system call */
/* or the usleep call like this :-) */
usleep(50000);
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}
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void
cl_eos()
{ /* free after Robert Viduya *//* must only be
* called with curx = 1 */
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if (CD)
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xputs(CD);
else {
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int cx = curx, cy = cury;
while (cury <= LI - 2) {
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cl_end();
xputc('\n');
curx = 1;
cury++;
}
cl_end();
curs(cx, cy);
}
}