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[netbsd-mini2440.git] / games / hack / hack.termcap.c
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1 /* $NetBSD: hack.termcap.c,v 1.17 2009/06/07 18:30:39 dholland Exp $ */
3 /*
4 * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
5 * Amsterdam
6 * All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
12 * - Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
15 * - Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * - Neither the name of the Stichting Centrum voor Wiskunde en
20 * Informatica, nor the names of its contributors may be used to endorse or
21 * promote products derived from this software without specific prior
22 * written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
25 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
27 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
28 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
31 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
32 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
33 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
34 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 * Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
39 * All rights reserved.
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. The name of the author may not be used to endorse or promote products
50 * derived from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
53 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
54 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
55 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
56 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
57 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
58 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
59 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
60 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
61 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 #include <sys/cdefs.h>
65 #ifndef lint
66 __RCSID("$NetBSD: hack.termcap.c,v 1.17 2009/06/07 18:30:39 dholland Exp $");
67 #endif /* not lint */
69 #include <string.h>
70 #include <termios.h>
71 #include <termcap.h>
72 #include <stdlib.h>
73 #include <unistd.h>
74 #include "hack.h"
75 #include "extern.h"
76 #include "def.flag.h" /* for flags.nonull */
78 static struct tinfo *info;
79 static const char *HO, *CL, *CE, *CM, *ND, *XD, *BC_BS, *SO, *SE, *TI, *TE;
80 static const char *VS, *VE;
81 static int SG;
82 char *CD; /* tested in pri.c: docorner() */
83 int CO, LI; /* used in pri.c and whatis.c */
85 static void nocmov(int, int);
86 static void cmov(int, int);
87 static int xputc(int);
88 static void xputs(const char *);
90 void
91 startup(void)
93 char *term;
95 /* UP, BC, PC already set */
96 if (!(term = getenv("TERM")))
97 error("Can't get TERM.");
98 if (!strncmp(term, "5620", 4))
99 flags.nonull = 1; /* this should be a termcap flag */
100 if (t_getent(&info, term) < 1)
101 error("Unknown terminal type: %s.", term);
102 BC_BS = t_agetstr(info, "bc");
103 if (!BC_BS) {
104 if (!t_getflag(info, "bs"))
105 error("Terminal must backspace.");
106 BC_BS = "\b";
108 HO = t_agetstr(info, "ho");
109 CO = t_getnum(info, "co");
110 LI = t_getnum(info, "li");
111 if (CO < COLNO || LI < ROWNO + 2)
112 setclipped();
113 if (!(CL = t_agetstr(info, "cl")))
114 error("Hack needs CL.");
115 ND = t_agetstr(info, "nd");
116 if (t_getflag(info, "os"))
117 error("Hack can't have OS.");
118 CE = t_agetstr(info, "ce");
120 * It seems that xd is no longer supported, and we should use a
121 * linefeed instead; unfortunately this requires resetting CRMOD, and
122 * many output routines will have to be modified slightly. Let's
123 * leave that till the next release.
125 XD = t_agetstr(info, "xd");
126 /* not: XD = t_agetstr(info, "do"); */
127 if (!(CM = t_agetstr(info, "cm"))) {
128 if (!UP && !HO)
129 error("Hack needs CM or UP or HO.");
130 printf("Playing hack on terminals without cm is suspect...\n");
131 getret();
133 SO = t_agetstr(info, "so");
134 SE = t_agetstr(info, "se");
135 SG = t_getnum(info, "sg"); /* -1: not fnd; else # of spaces left by so */
136 if (!SO || !SE || (SG > 0))
137 SO = SE = 0;
138 CD = t_agetstr(info, "cd");
139 set_whole_screen(); /* uses LI and CD */
142 void
143 start_screen(void)
145 xputs(TI);
146 xputs(VS);
149 void
150 end_screen(void)
152 xputs(VE);
153 xputs(TE);
157 * Cursor movements
159 * x,y not xchar: perhaps xchar is unsigned and
160 * curx-x would be unsigned as well
162 void
163 curs(int x, int y)
166 if (y == cury && x == curx)
167 return;
168 if (!ND && (curx != x || x <= 3)) { /* Extremely primitive */
169 cmov(x, y); /* bunker!wtm */
170 return;
172 if (abs(cury - y) <= 3 && abs(curx - x) <= 3)
173 nocmov(x, y);
174 else if ((x <= 3 && abs(cury - y) <= 3) || (!CM && x < abs(curx - x))) {
175 (void) putchar('\r');
176 curx = 1;
177 nocmov(x, y);
178 } else if (!CM) {
179 nocmov(x, y);
180 } else
181 cmov(x, y);
184 static void
185 nocmov(int x, int y)
187 if (cury > y) {
188 if (UP) {
189 while (cury > y) { /* Go up. */
190 xputs(UP);
191 cury--;
193 } else if (CM) {
194 cmov(x, y);
195 } else if (HO) {
196 home();
197 curs(x, y);
198 } /* else impossible("..."); */
199 } else if (cury < y) {
200 if (XD) {
201 while (cury < y) {
202 xputs(XD);
203 cury++;
205 } else if (CM) {
206 cmov(x, y);
207 } else {
208 while (cury < y) {
209 xputc('\n');
210 curx = 1;
211 cury++;
215 if (curx < x) { /* Go to the right. */
216 if (!ND)
217 cmov(x, y);
218 else /* bah */
219 /* should instead print what is there already */
220 while (curx < x) {
221 xputs(ND);
222 curx++;
224 } else if (curx > x) {
225 while (curx > x) { /* Go to the left. */
226 xputs(BC_BS);
227 curx--;
232 static void
233 cmov(int x, int y)
235 char buf[256];
237 if (t_goto(info, CM, x - 1, y - 1, buf, 255) >= 0) {
238 xputs(buf);
239 cury = y;
240 curx = x;
244 static int
245 xputc(int c)
247 return (fputc(c, stdout));
250 static void
251 xputs(const char *s)
253 tputs(s, 1, xputc);
256 void
257 cl_end(void)
259 if (CE)
260 xputs(CE);
261 else { /* no-CE fix - free after Harold Rynes */
263 * this looks terrible, especially on a slow terminal but is
264 * better than nothing
266 int cx = curx, cy = cury;
268 while (curx < COLNO) {
269 xputc(' ');
270 curx++;
272 curs(cx, cy);
276 void
277 clear_screen(void)
279 xputs(CL);
280 curx = cury = 1;
283 void
284 home(void)
286 char buf[256];
288 if (HO)
289 xputs(HO);
290 else if ((CM) && (t_goto(info, CM, 0, 0, buf, 255) >= 0))
291 xputs(buf);
292 else
293 curs(1, 1); /* using UP ... */
294 curx = cury = 1;
297 void
298 standoutbeg(void)
300 if (SO)
301 xputs(SO);
304 void
305 standoutend(void)
307 if (SE)
308 xputs(SE);
311 void
312 backsp(void)
314 xputs(BC_BS);
315 curx--;
318 void
319 bell(void)
321 (void) putchar('\007'); /* curx does not change */
322 (void) fflush(stdout);
325 void
326 delay_output(void)
329 /* delay 50 ms - could also use a 'nap'-system call */
330 /* or the usleep call like this :-) */
331 usleep(50000);
334 void
335 cl_eos(void)
336 { /* free after Robert Viduya *//* must only be
337 * called with curx = 1 */
339 if (CD)
340 xputs(CD);
341 else {
342 int cx = curx, cy = cury;
343 while (cury <= LI - 2) {
344 cl_end();
345 xputc('\n');
346 curx = 1;
347 cury++;
349 cl_end();
350 curs(cx, cy);