1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
|
/* $OpenBSD: tok.c,v 1.4 1999/05/30 02:23:17 pjanzen Exp $ */
/* $NetBSD: tok.c,v 1.5 1997/10/18 20:03:54 christos Exp $ */
/* tok.c Larn is copyrighted 1986 by Noah Morgan. */
#ifndef lint
static char rcsid[] = "$OpenBSD: tok.c,v 1.4 1999/05/30 02:23:17 pjanzen Exp $";
#endif /* not lint */
#include <sys/types.h>
#include <ctype.h>
#include <string.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include "header.h"
#include "extern.h"
static char lastok = 0;
int yrepcount = 0, dayplay = 0;
#ifndef FLUSHNO
#define FLUSHNO 5
#endif /* FLUSHNO */
static int flushno = FLUSHNO; /* input queue flushing threshold */
#define MAXUM 52 /* maximum number of user re-named monsters */
#define MAXMNAME 40 /* max length of a monster re-name */
static char usermonster[MAXUM][MAXMNAME]; /* the user named monster
* name goes here */
static u_char usermpoint = 0; /* the user monster pointer */
/*
lexical analyzer for larn
*/
int
yylex()
{
char cc;
int ic;
if (hit2flag) {
hit2flag = 0;
yrepcount = 0;
return (' ');
}
if (yrepcount > 0) {
--yrepcount;
return (lastok);
} else
yrepcount = 0;
if (yrepcount == 0) {
bottomdo();
showplayer();
} /* show where the player is */
lflush();
while (1) {
c[BYTESIN]++;
if (ckpflag)
if ((c[BYTESIN] % 400) == 0) { /* check for periodic
* checkpointing */
#ifndef DOCHECKPOINTS
savegame(ckpfile);
#else
wait(0); /* wait for other forks to
* finish */
if (fork() == 0) {
savegame(ckpfile);
exit(0);
}
#endif
#ifdef TIMECHECK
if (dayplay == 0)
if (playable()) {
cursor(1, 19);
lprcat("\nSorry, but it is now time for work. Your game has been saved.\n");
lbeep();
lflush();
savegame(savefilename);
wizard = nomove = 1;
sleep(4);
died(-257);
}
#endif /* TIMECHECK */
}
do { /* if keyboard input buffer is too big, flush
* some of it */
ioctl(0, FIONREAD, &ic);
if (ic > flushno)
read(0, &cc, 1);
}
while (ic > flushno);
if (read(0, &cc, 1) != 1)
return (lastok = -1);
if (cc == 'Y' - 64) { /* control Y -- shell escape */
resetscroll();
clear();/* scrolling region, home, clear, no
* attributes */
if ((ic = fork()) == 0) { /* child */
/* revoke */
setgid(getgid());
execl("/bin/csh", 0);
exit(1);
}
wait(0);
if (ic < 0) { /* error */
write(2, "Can't fork off a shell!\n", 25);
sleep(2);
}
setscroll();
return (lastok = 'L' - 64); /* redisplay screen */
}
if ((cc <= '9') && (cc >= '0')) {
yrepcount = yrepcount * 10 + cc - '0';
} else {
if (yrepcount > 0)
--yrepcount;
return (lastok = cc);
}
}
}
/*
* flushall() Function to flush all type-ahead in the input buffer
*/
void
flushall()
{
char cc;
int ic;
for (;;) { /* if keyboard input buffer is too big, flush
* some of it */
ioctl(0, FIONREAD, &ic);
if (ic <= 0)
return;
while (ic > 0) {
read(0, &cc, 1);
--ic;
} /* gobble up the byte */
}
}
/*
* function to set the desired hardness
* enter with hard= -1 for default hardness, else any desired hardness
*/
void
sethard(hard)
int hard;
{
int j, k, i;
j = c[HARDGAME];
hashewon();
if (restorflag == 0) { /* don't set c[HARDGAME] if restoring game */
if (hard >= 0)
c[HARDGAME] = hard;
} else
c[HARDGAME] = j;/* set c[HARDGAME] to proper value if
* restoring game */
if ((k = c[HARDGAME]) != 0)
for (j = 0; j <= MAXMONST + 8; j++) {
i = ((6 + k) * monster[j].hitpoints + 1) / 6;
monster[j].hitpoints = (i < 0) ? 32767 : i;
i = ((6 + k) * monster[j].damage + 1) / 5;
monster[j].damage = (i > 127) ? 127 : i;
i = (10 * monster[j].gold) / (10 + k);
monster[j].gold = (i > 32767) ? 32767 : i;
i = monster[j].armorclass - k;
monster[j].armorclass = (i < -127) ? -127 : i;
i = (7 * monster[j].experience) / (7 + k) + 1;
monster[j].experience = (i <= 0) ? 1 : i;
}
}
/*
function to read and process the larn options file
*/
void
readopts()
{
char *i;
int j, k;
int flag;
flag = 1; /* set to 0 if he specifies a name for his
* character */
if (lopen(optsfile) < 0) {
strcpy(logname, loginname);
return; /* user name if no character name */
}
i = " ";
while (*i) {
if ((i = (char *) lgetw()) == 0)
break; /* check for EOF */
while ((*i == ' ') || (*i == '\t'))
i++; /* eat leading whitespace */
switch (*i) {
case 'b':
if (strcmp(i, "bold-objects") == 0)
boldon = 1;
break;
case 'e':
if (strcmp(i, "enable-checkpointing") == 0)
ckpflag = 1;
break;
case 'i':
if (strcmp(i, "inverse-objects") == 0)
boldon = 0;
break;
case 'f':
if (strcmp(i, "female") == 0)
sex = 0; /* male or female */
break;
case 'm':
if (strcmp(i, "monster:") == 0) { /* name favorite monster */
if ((i = lgetw()) == 0)
break;
if (strlen(i) >= MAXMNAME)
i[MAXMNAME - 1] = 0;
strcpy(usermonster[usermpoint], i);
if (usermpoint >= MAXUM)
break; /* defined all of em */
if (isalpha(j = usermonster[usermpoint][0])) {
for (k = 1; k < MAXMONST + 8; k++) /* find monster */
if (monstnamelist[k] == j) {
monster[k].name = &usermonster[usermpoint++][0];
break;
}
}
} else if (strcmp(i, "male") == 0)
sex = 1;
break;
case 'n':
if (strcmp(i, "name:") == 0) { /* defining players name */
if ((i = lgetw()) == 0)
break;
if (strlen(i) >= LOGNAMESIZE)
i[LOGNAMESIZE - 1] = 0;
strcpy(logname, i);
flag = 0;
} else if (strcmp(i, "no-introduction") == 0)
nowelcome = 1;
else if (strcmp(i, "no-beep") == 0)
nobeep = 1;
break;
case 'p':
if (strcmp(i, "process-name:") == 0) {
if ((i = lgetw()) == 0)
break;
if (strlen(i) >= PSNAMESIZE)
i[PSNAMESIZE - 1] = 0;
strcpy(psname, i);
} else if (strcmp(i, "play-day-play") == 0)
dayplay = 1;
break;
case 's':
if (strcmp(i, "savefile:") == 0) { /* defining savefilename */
if ((i = lgetw()) == 0)
break;
strcpy(savefilename, i);
flag = 0;
}
break;
};
}
if (flag)
strcpy(logname, loginname);
}
|
