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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.1 by elmex, Sun Aug 13 17:16:01 2006 UTC vs.
Revision 1.97 by root, Fri Jul 2 02:00:47 2010 UTC

1/* 1/*
2 * static char *rcsid_utils_c = 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 * "$Id: utils.C,v 1.1 2006/08/13 17:16:01 elmex Exp $"; 3 *
4 * Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 *
6 * Deliantra is free software: you can redistribute it and/or modify it under
7 * the terms of the Affero GNU General Public License as published by the
8 * Free Software Foundation, either version 3 of the License, or (at your
9 * option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the Affero GNU General Public License
17 * and the GNU General Public License along with this program. If not, see
18 * <http://www.gnu.org/licenses/>.
19 *
20 * The authors can be reached via e-mail to <support@deliantra.net>
4 */ 21 */
5 22
6/* 23/*
7 CrossFire, A Multiplayer game for X-windows
8
9 Copyright (C) 2002 Mark Wedel & Crossfire Development Team
10 Copyright (C) 1992 Frank Tore Johansen
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25
26 The authors can be reached via e-mail at crossfire-devel@real-time.com
27*/
28
29/*
30 * General convenience functions for crossfire. 24 * General convenience functions for deliantra.
31 */ 25 */
32 26
27#include <cstdlib>
28#include <sys/types.h>
29#include <unistd.h>
30#include <sys/time.h>
31#include <time.h>
32#include <signal.h>
33
33#include <global.h> 34#include <global.h>
34#include <funcpoint.h>
35#include <material.h> 35#include <material.h>
36#include <object.h>
36 37
37/* 38#include <sys/time.h>
38 * The random functions here take luck into account when rolling random 39#include <sys/resource.h>
39 * dice or numbers. This function has less of an impact the larger the 40
40 * difference becomes in the random numbers. IE, the effect is lessened 41#include <glib.h>
41 * on a 1-1000 roll, vs a 1-6 roll. This can be used by crafty programmers, 42
42 * to specifically disable luck in certain rolls, simply by making the 43refcnt_base::refcnt_t refcnt_dummy;
43 * numbers larger (ie, 1d1000 > 500 vs 1d6 > 3) 44ssize_t slice_alloc;
45
46#if !GCC_VERSION(3,4)
47int least_significant_bit (uint32_t x)
48{
49 x &= -x; // this isolates the lowest bit
50
51 int r = 0;
52
53 if (x & 0xaaaaaaaa) r += 1;
54 if (x & 0xcccccccc) r += 2;
55 if (x & 0xf0f0f0f0) r += 4;
56 if (x & 0xff00ff00) r += 8;
57 if (x & 0xffff0000) r += 16;
58
59 return r;
60}
61#endif
62
63/******************************************************************************/
64
65/* Checks a player-provided string which will become the msg property of
66 * an object for dangerous input.
44 */ 67 */
68bool
69msg_is_safe (const char *msg)
70{
71 bool safe = true;
45 72
46/* 73 /* Trying to cheat by getting data into the object */
47 * Roll a random number between min and max. Uses op to determine luck, 74 if (!strncmp (msg, "endmsg", sizeof ("endmsg") - 1)
48 * and if goodbad is non-zero, luck increases the roll, if zero, it decreases. 75 || strstr (msg, "\nendmsg"))
49 * Generally, op should be the player/caster/hitter requesting the roll, 76 safe = false;
50 * not the recipient (ie, the poor slob getting hit). [garbled 20010916]
51 */
52 77
53int random_roll(int min, int max, const object *op, int goodbad) { 78 /* Trying to make the object talk, and potentially access arbitrary code */
54 int omin, diff, luck, base, ran; 79 if (object::msg_has_dialogue (msg))
80 safe = false;
55 81
56 omin = min; 82 return safe;
57 diff = max - min + 1; 83}
58 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
59 84
60 if (max < 1 || diff < 1) { 85/////////////////////////////////////////////////////////////////////////////
61 LOG(llevError, "Calling random_roll with min=%d max=%d\n", min, max); 86
62 return(min); /* avoids a float exception */ 87void
88fork_abort (const char *msg)
89{
90 if (!fork ())
91 {
92 signal (SIGINT , SIG_IGN);
93 signal (SIGTERM, SIG_IGN);
94 signal (SIGABRT, SIG_IGN);
95
96 signal (SIGSEGV, SIG_DFL);
97 signal (SIGBUS , SIG_DFL);
98 signal (SIGILL , SIG_DFL);
99 signal (SIGTRAP, SIG_DFL);
100
101 // try to put corefiles into a subdirectory, if existing, to allow
102 // an administrator to reduce the I/O load.
103 chdir ("cores");
104
105 // try to detach us from as many external dependencies as possible
106 // as coredumping can take time by closing all fd's.
107 {
108 struct rlimit lim;
109
110 if (getrlimit (RLIMIT_NOFILE, &lim))
111 lim.rlim_cur = 1024;
112
113 for (int i = 0; i < lim.rlim_cur; ++i)
114 close (i);
115 }
116
117 {
118 sigset_t empty;
119 sigemptyset (&empty);
120 sigprocmask (SIG_SETMASK, &empty, 0);
121 }
122
123 // try to coredump with SIGTRAP
124 kill (getpid (), SIGTRAP);
125 abort ();
63 } 126 }
64 127
65 ran = RANDOM(); 128 LOG (llevError, "fork abort: %s\n", msg);
129}
66 130
67 if (op->type != PLAYER) 131void *salloc_ (int n) throw (std::bad_alloc)
68 return((ran%diff)+min); 132{
133 void *ptr = g_slice_alloc (n);
69 134
70 luck = op->stats.luck; 135 if (!ptr)
71 if (RANDOM()%base < MIN(10, abs(luck))) { 136 throw std::bad_alloc ();
72 /* we have a winner */
73 ((luck > 0) ? (luck = 1) : (luck = -1));
74 diff -= luck;
75 if (diff < 1)
76 return(omin); /*check again*/
77 ((goodbad) ? (min += luck) : (diff));
78 137
79 return(MAX(omin, MIN(max, (ran%diff)+min))); 138 slice_alloc += n;
139 return ptr;
140}
141
142void *salloc_ (int n, void *src) throw (std::bad_alloc)
143{
144 void *ptr = salloc_ (n);
145
146 if (src)
147 memcpy (ptr, src, n);
148 else
149 memset (ptr, 0, n);
150
151 return ptr;
152}
153
154/******************************************************************************/
155
156#if DEBUG_SALLOC
157
158#define MAGIC 0xa1b2c35543deadLL
159
160void *g_slice_alloc (unsigned long size)
161{
162 unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
163 *p++ = size ^ MAGIC;
164 //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
165 return (void *)p;
166}
167
168void *g_slice_alloc0 (unsigned long size)
169{
170 return memset (g_slice_alloc (size), 0, size);
171}
172
173void g_slice_free1 (unsigned long size, void *ptr)
174{
175 //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
176 if (expect_true (ptr))
177 {
178 unsigned long *p = (unsigned long *)ptr;
179 unsigned long s = *--p ^ MAGIC;
180
181 if (size != (unsigned long)(*p ^ MAGIC))
182 {
183 LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
184 abort ();
185 }
186
187 *p = MAGIC;
188
189 (g_slice_free1)(s + sizeof (unsigned long), p);
80 } 190 }
81 return((ran%diff)+min);
82} 191}
83 192
84/*
85 * This is a 64 bit version of random_roll above. This is needed
86 * for exp loss calculations for players changing religions.
87 */
88
89sint64 random_roll64(sint64 min, sint64 max, const object *op, int goodbad) {
90 sint64 omin, diff, luck, ran;
91 int base;
92
93 omin = min;
94 diff = max - min + 1;
95 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
96
97 if (max < 1 || diff < 1) {
98#ifndef WIN32
99 LOG(llevError, "Calling random_roll with min=%lld max=%lld\n", min, max);
100#else
101 LOG(llevError, "Calling random_roll with min=%I64d max=%I64d\n", min, max);
102#endif 193#endif
103 return(min); /* avoids a float exception */ 194
195/******************************************************************************/
196
197int
198assign (char *dst, const char *src, int maxsize)
199{
200 if (!src)
201 src = "";
202
203 int len = strlen (src);
204
205 if (len >= maxsize)
206 {
207 if (maxsize <= 4)
208 {
209 memset (dst, '.', maxsize - 2);
210 dst [maxsize - 1] = 0;
211 }
212 else
213 {
214 memcpy (dst, src, maxsize - 4);
215 memcpy (dst + maxsize - 4, "...", 4);
216 }
217
218 len = maxsize;
104 } 219 }
220 else
221 memcpy (dst, src, ++len);
105 222
106 /* Don't know of a portable call to get 64 bit random values. 223 return len;
107 * So make a call to get two 32 bit random numbers, and just to
108 * a little byteshifting. Do make sure the first one is only
109 * 32 bit, so we don't get skewed results
110 */
111 ran = (RANDOM() & 0xffffffff) | ((sint64)RANDOM() << 32);
112
113 if (op->type != PLAYER)
114 return((ran%diff)+min);
115
116 luck = op->stats.luck;
117 if (RANDOM()%base < MIN(10, abs(luck))) {
118 /* we have a winner */
119 ((luck > 0) ? (luck = 1) : (luck = -1));
120 diff -= luck;
121 if (diff < 1)
122 return(omin); /*check again*/
123 ((goodbad) ? (min += luck) : (diff));
124
125 return(MAX(omin, MIN(max, (ran%diff)+min)));
126 }
127 return((ran%diff)+min);
128} 224}
129 225
130/* 226char *
131 * Roll a number of dice (2d3, 4d6). Uses op to determine luck, 227vformat (const char *format, va_list ap)
132 * If goodbad is non-zero, luck increases the roll, if zero, it decreases.
133 * Generally, op should be the player/caster/hitter requesting the roll,
134 * not the recipient (ie, the poor slob getting hit).
135 * The args are num D size (ie 4d6) [garbled 20010916]
136 */
137
138int die_roll(int num, int size, const object *op, int goodbad) {
139 int min, diff, luck, total, i, gotlucky, base, ran;
140
141 diff = size;
142 min = 1;
143 luck = total = gotlucky = 0;
144 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
145 if (size < 2 || diff < 1) {
146 LOG(llevError, "Calling die_roll with num=%d size=%d\n", num, size);
147 return(num); /* avoids a float exception */
148 }
149
150 if (op->type == PLAYER)
151 luck = op->stats.luck;
152
153 for (i = 0; i < num; i++) {
154 if (RANDOM()%base < MIN(10, abs(luck)) && !gotlucky) {
155 /* we have a winner */
156 gotlucky++;
157 ((luck > 0) ? (luck = 1) : (luck = -1));
158 diff -= luck;
159 if (diff < 1)
160 return(num); /*check again*/
161 ((goodbad) ? (min += luck) : (diff));
162 ran = RANDOM();
163 total += MAX(1, MIN(size, (ran%diff)+min));
164 } else {
165 total += RANDOM()%size+1;
166 }
167 }
168 return(total);
169}
170
171/*
172 * Another convenience function. Returns a number between min and max.
173 * It is suggested one use these functions rather than RANDOM()%, as it
174 * would appear that a number of off-by-one-errors exist due to improper
175 * use of %. This should also prevent SIGFPE.
176 */
177
178int rndm(int min, int max)
179{ 228{
180 int diff; 229 static dynbuf_text bufs[8];
230 static int bufidx;
181 231
182 diff = max - min + 1; 232 dynbuf_text &buf = bufs [++bufidx & 7];
183 if (max < 1 || diff < 1)
184 return(min);
185 233
186 return(RANDOM()%diff+min); 234 buf.clear ();
235 buf.vprintf (format, ap);
236 return buf;
187} 237}
188 238
189/* decay and destroy persihable items in a map */ 239char *
190 240format (const char *format, ...)
191void decay_objects(mapstruct *m)
192{ 241{
193 int x, y, destroy; 242 va_list ap;
194 object *op, *otmp; 243 va_start (ap, format);
244 char *buf = vformat (format, ap);
245 va_end (ap);
195 246
196 if (m->unique) 247 return buf;
197 return;
198
199 for (x=0; x < MAP_WIDTH(m); x++)
200 for (y=0; y < MAP_HEIGHT(m); y++)
201 for (op = get_map_ob(m, x, y); op; op = otmp) {
202 destroy = 0;
203 otmp = op->above;
204 if (QUERY_FLAG(op,FLAG_IS_FLOOR) && QUERY_FLAG(op, FLAG_UNIQUE))
205 break;
206 if (QUERY_FLAG(op, FLAG_IS_FLOOR) ||
207 QUERY_FLAG(op, FLAG_OBJ_ORIGINAL) ||
208 QUERY_FLAG(op, FLAG_OBJ_SAVE_ON_OVL) ||
209 QUERY_FLAG(op, FLAG_UNIQUE) ||
210 QUERY_FLAG(op, FLAG_OVERLAY_FLOOR) ||
211 QUERY_FLAG(op, FLAG_UNPAID) || IS_LIVE(op))
212 continue;
213 /* otherwise, we decay and destroy */
214 if (IS_WEAPON(op)) {
215 op->stats.dam--;
216 if (op->stats.dam < 0)
217 destroy = 1;
218 } else if (IS_ARMOR(op)) {
219 op->stats.ac--;
220 if (op->stats.ac < 0)
221 destroy = 1;
222 } else if (op->type == FOOD) {
223 op->stats.food -= rndm(5,20);
224 if (op->stats.food < 0)
225 destroy = 1;
226 } else {
227 if (op->material & M_PAPER || op->material & M_LEATHER ||
228 op->material & M_WOOD || op->material & M_ORGANIC ||
229 op->material & M_CLOTH || op->material & M_LIQUID)
230 destroy = 1;
231 if (op->material & M_IRON && rndm(1,5) == 1)
232 destroy = 1;
233 if (op->material & M_GLASS && rndm(1,2) == 1)
234 destroy = 1;
235 if ((op->material & M_STONE || op->material & M_ADAMANT) &&
236 rndm(1,10) == 1)
237 destroy = 1;
238 if ((op->material & M_SOFT_METAL || op->material & M_BONE) &&
239 rndm(1,3) == 1)
240 destroy = 1;
241 if (op->material & M_ICE && MAP_TEMP(m) > 32)
242 destroy = 1;
243 }
244 /* adjust overall chance below */
245 if (destroy && rndm(0, 1)) {
246 remove_ob(op);
247 free_object(op);
248 }
249 }
250} 248}
251 249
252/* convert materialname to materialtype_t */ 250tstamp now ()
253
254materialtype_t *name_to_material(const char *name)
255{ 251{
256 materialtype_t *mt, *nmt; 252 struct timeval tv;
257 253
258 mt = NULL; 254 gettimeofday (&tv, 0);
259 for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt=nmt->next) { 255 return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
260 if (strcmp(name, nmt->name) == 0) { 256}
261 mt = nmt; 257
262 break; 258int
263 } 259similar_direction (int a, int b)
264 } 260{
261 if (!a || !b)
265 return mt; 262 return 0;
266}
267 263
268/* when doing transmutation of objects, we have to recheck the resistances, 264 int diff = (b - a) & 7;
269 * as some that did not apply previously, may apply now. 265 return diff <= 1 || diff >= 7;
270 */
271
272void transmute_materialname(object *op, const object *change)
273{
274 materialtype_t *mt;
275 int j;
276
277 if (op->materialname == NULL)
278 return;
279
280 if (change->materialname != NULL &&
281 strcmp(op->materialname, change->materialname))
282 return;
283
284 if (!IS_ARMOR(op))
285 return;
286
287 mt = name_to_material(op->materialname);
288 if (!mt) {
289 LOG(llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", op->arch->name, op->name, op->materialname);
290 return;
291 }
292
293 for (j=0; j < NROFATTACKS; j++)
294 if (op->resist[j] == 0 && change->resist[j] != 0) {
295 op->resist[j] += mt->mod[j];
296 if (op->resist[j] > 100)
297 op->resist[j] = 100;
298 if (op->resist[j] < -100)
299 op->resist[j] = -100;
300 }
301} 266}
302 267
303/* set the materialname and type for an item */ 268/* crc32 0xdebb20e3 table and supplementary functions. */
304void set_materialname(object *op, int difficulty, materialtype_t *nmt) 269extern const uint32_t crc_32_tab[256] =
305{ 270{
306 materialtype_t *mt, *lmt; 271 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
307 int j; 272 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
273 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
274 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
275 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
276 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
277 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
278 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
279 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
280 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
281 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
282 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
283 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
284 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
285 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
286 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
287 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
288 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
289 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
290 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
291 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
292 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
293 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
294 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
295 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
296 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
297 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
298 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
299 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
300 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
301 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
302 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
303 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
304 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
305 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
306 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
307 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
308 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
309 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
310 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
311 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
312 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
313 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
314 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
315 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
316 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
317 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
318 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
319 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
320 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
321 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
322 0x2d02ef8dL
323};
308 324
309 if (op->materialname != NULL) 325void thread::start (void *(*start_routine)(void *), void *arg)
310 return; 326{
327 pthread_attr_t attr;
311 328
312 329 pthread_attr_init (&attr);
313 330 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
314 if (nmt == NULL) { 331 pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
315 lmt = NULL; 332 ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
316#ifndef NEW_MATERIAL_CODE 333#ifdef PTHREAD_SCOPE_PROCESS
317 for (mt = materialt; mt != NULL && mt->next != NULL; mt=mt->next) { 334 pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
318 if (op->material & mt->material) {
319 lmt = mt;
320 break;
321 }
322 }
323
324#else
325 for (mt = materialt; mt != NULL && mt->next != NULL; mt=mt->next) {
326 if (op->material & mt->material && rndm(1, 100) <= mt->chance &&
327 difficulty >= mt->difficulty &&
328 (op->magic >= mt->magic || mt->magic == 0)) {
329 lmt = mt;
330 if (!(IS_WEAPON(op) || IS_ARMOR(op)))
331 break;
332 }
333 }
334#endif 335#endif
335 } else {
336 lmt = nmt;
337 }
338 336
339 if (lmt != NULL) { 337 sigset_t fullsigset, oldsigset;
340#ifndef NEW_MATERIAL_CODE 338 sigfillset (&fullsigset);
341 op->materialname = add_string(lmt->name);
342 return;
343#else
344 339
345 if (op->stats.dam && IS_WEAPON(op)) { 340 pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
346 op->stats.dam += lmt->damage;
347 if (op->stats.dam < 1)
348 op->stats.dam = 1;
349 }
350 if (op->stats.sp && op->type == BOW)
351 op->stats.sp += lmt->sp;
352 if (op->stats.wc && IS_WEAPON(op))
353 op->stats.wc += lmt->wc;
354 if (IS_ARMOR(op)) {
355 if (op->stats.ac)
356 op->stats.ac += lmt->ac;
357 for (j=0; j < NROFATTACKS; j++)
358 if (op->resist[j] != 0) {
359 op->resist[j] += lmt->mod[j];
360 if (op->resist[j] > 100)
361 op->resist[j] = 100;
362 if (op->resist[j] < -100)
363 op->resist[j] = -100;
364 }
365 }
366 op->materialname = add_string(lmt->name);
367 /* dont make it unstackable if it doesn't need to be */
368 if (IS_WEAPON(op) || IS_ARMOR(op)) {
369 op->weight = (op->weight * lmt->weight)/100;
370 op->value = (op->value * lmt->value)/100;
371 }
372#endif
373 }
374}
375 341
376/* 342 if (pthread_create (&id, &attr, start_routine, arg))
377 * Strip out the media tags from a String. 343 cleanup ("unable to create a new thread");
378 * Warning the input string will contain the result string
379 */
380void strip_media_tag(char *message){
381 int in_tag=0;
382 char* dest;
383 char* src;
384 src=dest=message;
385 while (*src!='\0'){
386 if (*src=='['){
387 in_tag=1;
388 } else if (in_tag && (*src==']'))
389 in_tag=0;
390 else if (!in_tag){
391 *dest=*src;
392 dest++;
393 }
394 src++;
395 }
396 *dest='\0';
397}
398 344
399const char* strrstr(const char* haystack, const char* needle){ 345 pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
400 const char* lastneedle;
401 lastneedle=NULL;
402 while((haystack=strstr(haystack,needle))!=NULL){
403 lastneedle=haystack;
404 haystack++;
405 }
406 return lastneedle;
407
408} 346}
409#define EOL_SIZE (sizeof("\n")-1)
410void strip_endline(char* buf){
411 if (strlen(buf)<sizeof("\n")){
412 return;
413 }
414 if (!strcmp(buf+strlen(buf)-EOL_SIZE,"\n"))
415 buf[strlen(buf)-EOL_SIZE]='\0';
416}
417 347
418/**
419 * Replace in string src all occurrences of key by replacement. The resulting
420 * string is put into result; at most resultsize characters (including the
421 * terminating null character) will be written to result.
422 */
423void replace(const char *src, const char *key, const char *replacement, char *result, size_t resultsize)
424{
425 size_t resultlen;
426 size_t keylen;
427
428 /* special case to prevent infinite loop if key==replacement=="" */
429 if(strcmp(key, replacement) == 0)
430 {
431 snprintf(result, resultsize, "%s", src);
432 return;
433 }
434
435 keylen = strlen(key);
436
437 resultlen = 0;
438 while(*src != '\0' && resultlen+1 < resultsize)
439 {
440 if(strncmp(src, key, keylen) == 0)
441 {
442 snprintf(result+resultlen, resultsize-resultlen, "%s", replacement);
443 resultlen += strlen(result+resultlen);
444 src += keylen;
445 }
446 else
447 {
448 result[resultlen++] = *src++;
449 }
450 }
451 result[resultlen] = '\0';
452}
453
454/**
455 * Taking a string as an argument, mutate it into a string that looks like a list.
456 * a 'list' for the purposes here, is a string of items, seperated by commas, except
457 * for the last entry, which has an 'and' before it, and a full stop (period) after it.
458 * This function will also strip all trailing non alphanumeric characters.
459 * It does not insert an oxford comma.
460 */
461
462void make_list_like(char *input) {
463 char *p, tmp[MAX_BUF];
464 int i;
465 if (!input || strlen(input) > MAX_BUF-5) return;
466 /* bad stuff would happen if we continued here, the -5 is to make space for ' and ' */
467
468 strncpy(tmp, input, MAX_BUF-5);
469 /*trim all trailing commas, spaces etc.*/
470 for (i=strlen(tmp); !isalnum(tmp[i]) && i >= 0; i--)
471 tmp[i]='\0';
472 strcat(tmp, ".");
473
474 p=strrchr(tmp, ',');
475 if (p) {
476 *p='\0';
477 strcpy(input, tmp);
478 p++;
479 strcat(input, " and");
480 strcat(input, p);
481 }
482 else strcpy(input, tmp);
483 return;
484}

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