ppi.4: remove wrong statement
[dragonfly.git] / games / atc / main.c
blobf992de126cba7c3b0690011e53bd31a02aa09f28
1 /*-
2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Ed James.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
36 * @(#) Copyright (c) 1990, 1993 The Regents of the University of California. All rights reserved.
37 * @(#)main.c 8.1 (Berkeley) 5/31/93
38 * $FreeBSD: src/games/atc/main.c,v 1.9 1999/11/30 03:48:21 billf Exp $
39 * $DragonFly: src/games/atc/main.c,v 1.4 2006/10/08 17:11:30 pavalos Exp $
43 * Copyright (c) 1987 by Ed James, UC Berkeley. All rights reserved.
45 * Copy permission is hereby granted provided that this notice is
46 * retained on all partial or complete copies.
48 * For more info on this and all of my stuff, mail edjames@berkeley.edu.
51 #include "include.h"
52 #include "pathnames.h"
54 extern FILE *yyin;
55 static int read_file(const char *);
56 static const char *default_game(void);
57 static const char *okay_game(const char *);
58 static int list_games(void);
61 int
62 main(__unused int ac, char **av)
64 int seed = 0;
65 int f_usage = 0, f_list = 0, f_showscore = 0;
66 int f_printpath = 0;
67 const char *file = NULL;
68 char *p_name, *ptr;
69 #ifdef BSD
70 struct itimerval itv;
71 #endif
73 /* Open the score file then revoke setgid privileges */
74 open_score_file();
75 setregid(getgid(), getgid());
77 start_time = time(0);
79 p_name = *av++;
80 while (*av) {
81 #ifndef SAVEDASH
82 if (**av == '-')
83 ++*av;
84 else
85 break;
86 #endif
87 ptr = *av++;
88 while (*ptr) {
89 switch (*ptr) {
90 case '?':
91 case 'u':
92 f_usage++;
93 break;
94 case 'l':
95 f_list++;
96 break;
97 case 's':
98 case 't':
99 f_showscore++;
100 break;
101 case 'p':
102 f_printpath++;
103 break;
104 case 'r':
105 srandom(atoi(*av));
106 seed = 1;
107 av++;
108 break;
109 case 'f':
110 case 'g':
111 file = *av;
112 av++;
113 break;
114 default:
115 fprintf(stderr, "Unknown option '%c'\n", *ptr);
116 f_usage++;
117 break;
119 ptr++;
122 if (!seed)
123 srandomdev();
125 if (f_usage)
126 fprintf(stderr,
127 "Usage: %s -[u?lstp] [-[gf] game_name] [-r random seed]\n",
128 p_name);
129 if (f_showscore)
130 log_score(1);
131 if (f_list)
132 list_games();
133 if (f_printpath) {
134 char buf[100];
136 strcpy(buf, _PATH_GAMES);
137 buf[strlen(buf) - 1] = '\0';
138 puts(buf);
141 if (f_usage || f_showscore || f_list || f_printpath)
142 exit(0);
144 if (file == NULL)
145 file = default_game();
146 else
147 file = okay_game(file);
149 if (file == NULL || read_file(file) < 0)
150 exit(1);
152 init_gr();
153 setup_screen(sp);
155 addplane();
157 signal(SIGINT, (sig_t)quit);
158 signal(SIGQUIT, (sig_t)quit);
159 #ifdef BSD
160 signal(SIGTSTP, SIG_IGN);
161 signal(SIGSTOP, SIG_IGN);
162 #endif
163 signal(SIGHUP, (sig_t)log_score);
164 signal(SIGTERM, (sig_t)log_score);
166 #ifdef BSD
167 ioctl(fileno(stdin), TIOCGETP, &tty_start);
168 bcopy(&tty_start, &tty_new, sizeof(tty_new));
169 tty_new.sg_flags |= CBREAK;
170 tty_new.sg_flags &= ~ECHO;
171 ioctl(fileno(stdin), TIOCSETP, &tty_new);
172 #endif
174 #ifdef SYSV
175 ioctl(fileno(stdin), TCGETA, &tty_start);
176 bcopy(&tty_start, &tty_new, sizeof(tty_new));
177 tty_new.c_lflag &= ~ICANON;
178 tty_new.c_lflag &= ~ECHO;
179 tty_new.c_cc[VMIN] = 1;
180 tty_new.c_cc[VTIME] = 0;
181 ioctl(fileno(stdin), TCSETAW, &tty_new);
182 #endif
184 signal(SIGALRM, (sig_t)update);
186 #ifdef BSD
187 itv.it_value.tv_sec = 0;
188 itv.it_value.tv_usec = 1;
189 itv.it_interval.tv_sec = sp->update_secs;
190 itv.it_interval.tv_usec = 0;
191 setitimer(ITIMER_REAL, &itv, NULL);
192 #endif
193 #ifdef SYSV
194 alarm(sp->update_secs);
195 #endif
197 for (;;) {
198 if (getcommand() != 1)
199 planewin();
200 else {
201 #ifdef BSD
202 itv.it_value.tv_sec = 0;
203 itv.it_value.tv_usec = 0;
204 setitimer(ITIMER_REAL, &itv, NULL);
205 #endif
206 #ifdef SYSV
207 alarm(0);
208 #endif
210 update();
212 #ifdef BSD
213 itv.it_value.tv_sec = sp->update_secs;
214 itv.it_value.tv_usec = 0;
215 itv.it_interval.tv_sec = sp->update_secs;
216 itv.it_interval.tv_usec = 0;
217 setitimer(ITIMER_REAL, &itv, NULL);
218 #endif
219 #ifdef SYSV
220 alarm(sp->update_secs);
221 #endif
226 static int
227 read_file(const char *s)
229 int retval;
231 filename = s;
232 yyin = fopen(s, "r");
233 if (yyin == NULL) {
234 perror(s);
235 return (-1);
237 retval = yyparse();
238 fclose(yyin);
240 if (retval != 0)
241 return (-1);
242 else
243 return (0);
246 static const char *
247 default_game(void)
249 FILE *fp;
250 static char file[256];
251 char line[256], games[256];
253 strcpy(games, _PATH_GAMES);
254 strcat(games, GAMES);
256 if ((fp = fopen(games, "r")) == NULL) {
257 perror(games);
258 return (NULL);
260 if (fgets(line, sizeof(line), fp) == NULL) {
261 fprintf(stderr, "%s: no default game available\n", games);
262 return (NULL);
264 fclose(fp);
265 line[strlen(line) - 1] = '\0';
266 strcpy(file, _PATH_GAMES);
267 strcat(file, line);
268 return (file);
271 static const char *
272 okay_game(const char *s)
274 FILE *fp;
275 static char file[256];
276 const char *ret = NULL;
277 char line[256], games[256];
279 strcpy(games, _PATH_GAMES);
280 strcat(games, GAMES);
282 if ((fp = fopen(games, "r")) == NULL) {
283 perror(games);
284 return (NULL);
286 while (fgets(line, sizeof(line), fp) != NULL) {
287 line[strlen(line) - 1] = '\0';
288 if (strcmp(s, line) == 0) {
289 strcpy(file, _PATH_GAMES);
290 strcat(file, line);
291 ret = file;
292 break;
295 fclose(fp);
296 if (ret == NULL) {
297 test_mode = 1;
298 ret = s;
299 fprintf(stderr, "%s: %s: game not found\n", games, s);
300 fprintf(stderr, "Your score will not be logged.\n");
301 sleep(2); /* give the guy time to read it */
303 return (ret);
306 static int
307 list_games(void)
309 FILE *fp;
310 char line[256], games[256];
311 int num_games = 0;
313 strcpy(games, _PATH_GAMES);
314 strcat(games, GAMES);
316 if ((fp = fopen(games, "r")) == NULL) {
317 perror(games);
318 return (-1);
320 puts("available games:");
321 while (fgets(line, sizeof(line), fp) != NULL) {
322 printf(" %s", line);
323 num_games++;
325 fclose(fp);
326 if (num_games == 0) {
327 fprintf(stderr, "%s: no games available\n", games);
328 return (-1);
330 return (0);