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/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* hack.termcap.c - version 1.0.3 */
/* $FreeBSD: src/games/hack/hack.termcap.c,v 1.10 1999/11/16 10:26:38 marcel Exp $ */
#include <termcap.h>
#include "hack.h"
static char tbuf[512];
static char *HO, *CL, *CE, *tcUP, *CM, *ND, *XD, *tcBC, *SO, *SE, *TI, *TE;
static char *VS, *VE;
static int SG;
static char tcPC = '\0';
char *CD; /* tested in pri.c: docorner() */
int CO, LI; /* used in pri.c and whatis.c */
static void nocmov(int, int);
static void cmov(int, int);
static int xputc(int);
static void xputs(char *); /* 20150209 bkw: change return type int => void */
void
startup(void)
{
char *term;
char *tptr;
char *tbufptr, *pc;
tptr = alloc(1024);
tbufptr = tbuf;
if (!(term = getenv("TERM")))
error("Can't get TERM.");
if (tgetent(tptr, term) < 1)
error("Unknown terminal type: %s.", term);
if (tgetflag(__DECONST(char *, "NP")) ||
tgetflag(__DECONST(char *, "nx")))
flags.nonull = 1;
if ((pc = tgetstr(__DECONST(char *, "pc"), &tbufptr)))
tcPC = *pc;
if (!(tcBC = tgetstr(__DECONST(char *, "bc"), &tbufptr))
&& !(tcBC = tgetstr(__DECONST(char *, "le"), &tbufptr))) {
if (!tgetflag(__DECONST(char *, "bs")))
error("Terminal must backspace.");
tcBC = tbufptr;
tbufptr += 2;
*tcBC = '\b';
}
HO = tgetstr(__DECONST(char *, "ho"), &tbufptr);
CO = tgetnum(__DECONST(char *, "co"));
LI = tgetnum(__DECONST(char *, "li"));
if (CO < COLNO || LI < ROWNO + 2)
setclipped();
if (!(CL = tgetstr(__DECONST(char *, "cl"), &tbufptr)))
error("Hack needs CL.");
ND = tgetstr(__DECONST(char *, "nd"), &tbufptr);
if (tgetflag(__DECONST(char *, "os")))
error("Hack can't have OS.");
CE = tgetstr(__DECONST(char *, "ce"), &tbufptr);
tcUP = tgetstr(__DECONST(char *, "up"), &tbufptr);
/* 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 = tgetstr(__DECONST(char *, "xd"), &tbufptr);
/* not: XD = tgetstr("do", &tbufptr); */
if (!(CM = tgetstr(__DECONST(char *, "cm"), &tbufptr))) {
if (!tcUP && !HO)
error("Hack needs CM or UP or HO.");
printf("Playing hack on terminals without cm is suspect...\n");
getret();
}
SO = tgetstr(__DECONST(char *, "so"), &tbufptr);
SE = tgetstr(__DECONST(char *, "se"), &tbufptr);
SG = tgetnum(__DECONST(char *, "sg"));
if (!SO || !SE || (SG > 0)) SO = SE = NULL;
CD = tgetstr(__DECONST(char *, "cd"), &tbufptr);
set_whole_screen(); /* uses LI and CD */
if (tbufptr - tbuf > (int)sizeof(tbuf)) error(
"TERMCAP entry too big...\n");
free(tptr);
}
void
start_screen(void)
{
xputs(TI);
xputs(VS);
}
void
end_screen(void)
{
xputs(VE);
xputs(TE);
}
/* not xchar: perhaps xchar is unsigned and curx-x would be unsigned as well */
void
curs(int x, int y)
{
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))) {
putchar('\r');
curx = 1;
nocmov(x, y);
} else if (!CM)
nocmov(x, y);
else
cmov(x, y);
}
static void
nocmov(int x, int y)
{
if (cury > y) {
if (tcUP)
while (cury > y) { /* Go up. */
xputs(tcUP);
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(tcBC);
curx--;
}
}
}
static void
cmov(int x, int y)
{
xputs(tgoto(CM, x - 1, y - 1));
cury = y;
curx = x;
}
static int
xputc(int c)
{
return (fputc(c, stdout));
}
static void /* 20150209 bkw: change return type int => void */
xputs(char *s)
{
return (tputs(s, 1, xputc));
}
void
cl_end(void)
{
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(void)
{
xputs(CL);
curx = cury = 1;
}
void
home(void)
{
if (HO)
xputs(HO);
else if (CM)
xputs(tgoto(CM, 0, 0));
else
curs(1, 1); /* using tcUP ... */
curx = cury = 1;
}
void
standoutbeg(void)
{
if (SO)
xputs(SO);
}
void
standoutend(void)
{
if (SE)
xputs(SE);
}
void
backsp(void)
{
xputs(tcBC);
curx--;
}
void
bell(void)
{
putchar('\007'); /* curx does not change */
fflush(stdout);
}
void
cl_eos(void) /* 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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