[ViewVC] Diff of: cvs/deliantra/server/common/utils.C

Comparing deliantra/server/common/utils.C (file contents):
Revision 1.14 by root, Thu Sep 14 01:34:41 2006 UTC vs.
Revision 1.59 by root, Thu Jun 7 19:12:22 2007 UTC

…		…
1	/*	1	/*
2	CrossFire, A Multiplayer game for X-windows	2	* This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game.
3		3	*
		4	* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
4	Copyright (C) 2002 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
5	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992,2007 Frank Tore Johansen
6		7	*
7	This program is free software; you can redistribute it and/or modify	8	* Crossfire TRT is free software; you can redistribute it and/or modify it
8	it under the terms of the GNU General Public License as published by	9	* under the terms of the GNU General Public License as published by the Free
9	the Free Software Foundation; either version 2 of the License, or	10	* Software Foundation; either version 2 of the License, or (at your option)
10	(at your option) any later version.	11	* any later version.
11		12	*
12	This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful, but
13	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15	GNU General Public License for more details.	16	* for more details.
16		17	*
17	You should have received a copy of the GNU General Public License	18	* You should have received a copy of the GNU General Public License along
18	along with this program; if not, write to the Free Software	19	* with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20		21	*
21	The authors can be reached via e-mail at crossfire-devel@real-time.com	22	* The authors can be reached via e-mail to <crossfire@schmorp.de>
22	*/	23	*/
23		24
24	/*	25	/*
25	* General convenience functions for crossfire.	26	* General convenience functions for crossfire.
26	*/	27	*/
		28
		29	#include <cstdlib>
		30	#include <sys/types.h>
		31	#include <unistd.h>
		32	#include <sys/time.h>
		33	#include <time.h>
		34	#include <signal.h>
27		35
28	#include <global.h>	36	#include <global.h>
29	#include <funcpoint.h>	37	#include <funcpoint.h>
30	#include <material.h>	38	#include <material.h>
31		39
32	#include <glib.h>	40	#include <glib.h>
		41
		42	rand_gen rndm;
		43
		44	void
		45	tausworthe_random_generator::seed (uint32_t seed)
		46	{
		47	state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U;
		48	state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U;
		49	state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U;
		50	state [3] = state [2] * 69069U; if (state [0] < 128) state [0] += 128U;
		51
		52	for (int i = 11; --i; )
		53	operator ()();
		54	}
		55
		56	uint32_t
		57	tausworthe_random_generator::next ()
		58	{
		59	state [0] = ((state [0] & 0xFFFFFFFEU) << 18U) ^ (((state [0] << 6U) ^ state [0]) >> 13U);
		60	state [1] = ((state [1] & 0xFFFFFFF8U) << 2U) ^ (((state [1] << 2U) ^ state [1]) >> 27U);
		61	state [2] = ((state [2] & 0xFFFFFFF0U) << 7U) ^ (((state [2] << 13U) ^ state [2]) >> 21U);
		62	state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U);
		63
		64	return state [0] ^ state [1] ^ state [2] ^ state [3];
		65	}
		66
		67	uint32_t
		68	tausworthe_random_generator::get_range (uint32_t num)
		69	{
		70	return (next () * (uint64_t)num) >> 32U;
		71	}
		72
		73	// return a number within (min .. max)
		74	int
		75	tausworthe_random_generator::get_range (int r_min, int r_max)
		76	{
		77	return r_min + get_range (max (r_max - r_min + 1, 0));
		78	}
33		79
34	/*	80	/*
35	* The random functions here take luck into account when rolling random	81	* The random functions here take luck into account when rolling random
36	* dice or numbers. This function has less of an impact the larger the	82	* dice or numbers. This function has less of an impact the larger the
37	* difference becomes in the random numbers. IE, the effect is lessened	83	* difference becomes in the random numbers. IE, the effect is lessened
44	* Roll a random number between min and max. Uses op to determine luck,	90	* Roll a random number between min and max. Uses op to determine luck,
45	* and if goodbad is non-zero, luck increases the roll, if zero, it decreases.	91	* and if goodbad is non-zero, luck increases the roll, if zero, it decreases.
46	* Generally, op should be the player/caster/hitter requesting the roll,	92	* Generally, op should be the player/caster/hitter requesting the roll,
47	* not the recipient (ie, the poor slob getting hit). [garbled 20010916]	93	* not the recipient (ie, the poor slob getting hit). [garbled 20010916]
48	*/	94	*/
49
50	int	95	int
51	random_roll (int min, int max, const object *op, int goodbad)	96	random_roll (int r_min, int r_max, const object *op, int goodbad)
52	{	97	{
53	int omin, diff, luck, base, ran;	98	int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */
54		99
55	omin = min;	100	if (r_max < r_min)
56	diff = max - min + 1;
57	((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
58
59	if (max < 1 \|\| diff < 1)
60	{	101	{
61	LOG (llevError, "Calling random_roll with min=%d max=%d\n", min, max);	102	LOG (llevError \| logBacktrace, "Calling random_roll with min=%d max=%d\n", r_min, r_max);
		103	return r_min;
		104	}
		105
		106	if (op->type == PLAYER)
		107	{
		108	int luck = op->stats.luck;
		109
		110	if (rndm (base) < min (10, abs (luck)))
		111	{
		112	//TODO: take luck into account
		113	}
		114	}
		115
		116	return rndm (r_min, r_max);
		117	}
		118
		119	/*
		120	* This is a 64 bit version of random_roll above. This is needed
		121	* for exp loss calculations for players changing religions.
		122	*/
		123	sint64
		124	random_roll64 (sint64 min, sint64 max, const object *op, int goodbad)
		125	{
		126	sint64 omin = min;
		127	sint64 diff = max - min + 1;
		128	int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */
		129
		130	if (diff < 0)
		131	{
		132	LOG (llevError \| logBacktrace, "Calling random_roll64 with min=%" PRId64 " max=%" PRId64 "\n", min, max);
62	return (min); /* avoids a float exception */	133	return (min); /* avoids a float exception */
63	}	134	}
64		135
65	ran = RANDOM ();	136	/*
		137	* Make a call to get two 32 bit unsigned random numbers, and just to
		138	* a little bitshifting.
		139	*/
		140	sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31);
66		141
67	if (op->type != PLAYER)	142	if (op->type != PLAYER)
68	return ((ran % diff) + min);	143	return ((ran % diff) + min);
69		144
70	luck = op->stats.luck;	145	int luck = op->stats.luck;
		146
71	if (RANDOM () % base < MIN (10, abs (luck)))	147	if (rndm (base) < MIN (10, abs (luck)))
72	{	148	{
73	/* we have a winner */	149	/* we have a winner */
74	((luck > 0) ? (luck = 1) : (luck = -1));	150	((luck > 0) ? (luck = 1) : (luck = -1));
75	diff -= luck;	151	diff -= luck;
76	if (diff < 1)	152	if (diff < 1)
77	return (omin); /check again /	153	return (omin); /check again /
		154
78	((goodbad) ? (min += luck) : (diff));	155	((goodbad) ? (min += luck) : (diff));
79		156
80	return (MAX (omin, MIN (max, (ran % diff) + min)));	157	return (MAX (omin, MIN (max, (ran % diff) + min)));
81	}	158	}
		159
82	return ((ran % diff) + min);	160	return ran % diff + min;
83	}
84
85	/*
86	* This is a 64 bit version of random_roll above. This is needed
87	* for exp loss calculations for players changing religions.
88	*/
89
90	sint64
91	random_roll64 (sint64 min, sint64 max, const object *op, int goodbad)
92	{
93	sint64 omin, diff, luck, ran;
94	int base;
95
96	omin = min;
97	diff = max - min + 1;
98	((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
99
100	if (max < 1 \|\| diff < 1)
101	{
102	#ifndef WIN32
103	LOG (llevError, "Calling random_roll with min=%lld max=%lld\n", min, max);
104	#else
105	LOG (llevError, "Calling random_roll with min=%I64d max=%I64d\n", min, max);
106	#endif
107	return (min); /* avoids a float exception */
108	}
109
110	/* Don't know of a portable call to get 64 bit random values.
111	* So make a call to get two 32 bit random numbers, and just to
112	* a little byteshifting. Do make sure the first one is only
113	* 32 bit, so we don't get skewed results
114	*/
115	ran = (RANDOM () & 0xffffffff) \| ((sint64) RANDOM () << 32);
116
117	if (op->type != PLAYER)
118	return ((ran % diff) + min);
119
120	luck = op->stats.luck;
121	if (RANDOM () % base < MIN (10, abs (luck)))
122	{
123	/* we have a winner */
124	((luck > 0) ? (luck = 1) : (luck = -1));
125	diff -= luck;
126	if (diff < 1)
127	return (omin); /check again /
128	((goodbad) ? (min += luck) : (diff));
129
130	return (MAX (omin, MIN (max, (ran % diff) + min)));
131	}
132	return ((ran % diff) + min);
133	}	161	}
134		162
135	/*	163	/*
136	* Roll a number of dice (2d3, 4d6). Uses op to determine luck,	164	* Roll a number of dice (2d3, 4d6). Uses op to determine luck,
137	* If goodbad is non-zero, luck increases the roll, if zero, it decreases.	165	* If goodbad is non-zero, luck increases the roll, if zero, it decreases.
138	* Generally, op should be the player/caster/hitter requesting the roll,	166	* Generally, op should be the player/caster/hitter requesting the roll,
139	* not the recipient (ie, the poor slob getting hit).	167	* not the recipient (ie, the poor slob getting hit).
140	* The args are num D size (ie 4d6) [garbled 20010916]	168	* The args are num D size (ie 4d6) [garbled 20010916]
141	*/	169	*/
142
143	int	170	int
144	die_roll (int num, int size, const object *op, int goodbad)	171	die_roll (int num, int size, const object *op, int goodbad)
145	{	172	{
146	int min, diff, luck, total, i, gotlucky, base, ran;	173	int min, luck, total, i, gotlucky;
147		174
148	diff = size;	175	int diff = size;
149	min = 1;	176	min = 1;
150	luck = total = gotlucky = 0;	177	luck = total = gotlucky = 0;
151	((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */	178	int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */
		179
152	if (size < 2 \|\| diff < 1)	180	if (size < 2 \|\| diff < 1)
153	{	181	{
154	LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);	182	LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);
155	return (num); /* avoids a float exception */	183	return num; /* avoids a float exception */
156	}	184	}
157		185
158	if (op->type == PLAYER)	186	if (op->type == PLAYER)
159	luck = op->stats.luck;	187	luck = op->stats.luck;
160		188
161	for (i = 0; i < num; i++)	189	for (i = 0; i < num; i++)
162	{	190	{
163	if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky)	191	if (rndm (base) < MIN (10, abs (luck)) && !gotlucky)
164	{	192	{
165	/* we have a winner */	193	/* we have a winner */
166	gotlucky++;	194	gotlucky++;
167	((luck > 0) ? (luck = 1) : (luck = -1));	195	((luck > 0) ? (luck = 1) : (luck = -1));
168	diff -= luck;	196	diff -= luck;
169	if (diff < 1)	197	if (diff < 1)
170	return (num); /check again /	198	return (num); /check again /
171	((goodbad) ? (min += luck) : (diff));	199	((goodbad) ? (min += luck) : (diff));
172	ran = RANDOM ();
173	total += MAX (1, MIN (size, (ran % diff) + min));	200	total += MAX (1, MIN (size, rndm (diff) + min));
174	}	201	}
175	else	202	else
176	{
177	total += RANDOM () % size + 1;	203	total += rndm (size) + 1;
178	}
179	}	204	}
		205
180	return (total);	206	return total;
181	}
182
183	/*
184	* Another convenience function. Returns a number between min and max.
185	* It is suggested one use these functions rather than RANDOM()%, as it
186	* would appear that a number of off-by-one-errors exist due to improper
187	* use of %. This should also prevent SIGFPE.
188	*/
189
190	int
191	rndm (int min, int max)
192	{
193	int diff;
194
195	diff = max - min + 1;
196	if (max < 1 \|\| diff < 1)
197	return (min);
198
199	return (RANDOM () % diff + min);
200	}
201
202	/* decay and destroy persihable items in a map */
203
204	void
205	decay_objects (mapstruct *m)
206	{
207	int x, y, destroy;
208	object op, otmp;
209
210	if (m->unique)
211	return;
212
213	for (x = 0; x < MAP_WIDTH (m); x++)
214	for (y = 0; y < MAP_HEIGHT (m); y++)
215	for (op = get_map_ob (m, x, y); op; op = otmp)
216	{
217	destroy = 0;
218	otmp = op->above;
219	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
220	break;
221	if (QUERY_FLAG (op, FLAG_IS_FLOOR) \|\|
222	QUERY_FLAG (op, FLAG_OBJ_ORIGINAL) \|\|
223	QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL) \|\|
224	QUERY_FLAG (op, FLAG_UNIQUE) \|\| QUERY_FLAG (op, FLAG_OVERLAY_FLOOR) \|\| QUERY_FLAG (op, FLAG_UNPAID) \|\| IS_LIVE (op))
225	continue;
226	/* otherwise, we decay and destroy */
227	if (IS_WEAPON (op))
228	{
229	op->stats.dam--;
230	if (op->stats.dam < 0)
231	destroy = 1;
232	}
233	else if (IS_ARMOR (op))
234	{
235	op->stats.ac--;
236	if (op->stats.ac < 0)
237	destroy = 1;
238	}
239	else if (op->type == FOOD)
240	{
241	op->stats.food -= rndm (5, 20);
242	if (op->stats.food < 0)
243	destroy = 1;
244	}
245	else
246	{
247	if (op->material & M_PAPER \|\| op->material & M_LEATHER \|\|
248	op->material & M_WOOD \|\| op->material & M_ORGANIC \|\| op->material & M_CLOTH \|\| op->material & M_LIQUID)
249	destroy = 1;
250	if (op->material & M_IRON && rndm (1, 5) == 1)
251	destroy = 1;
252	if (op->material & M_GLASS && rndm (1, 2) == 1)
253	destroy = 1;
254	if ((op->material & M_STONE \|\| op->material & M_ADAMANT) && rndm (1, 10) == 1)
255	destroy = 1;
256	if ((op->material & M_SOFT_METAL \|\| op->material & M_BONE) && rndm (1, 3) == 1)
257	destroy = 1;
258	if (op->material & M_ICE && MAP_TEMP (m) > 32)
259	destroy = 1;
260	}
261	/* adjust overall chance below */
262	if (destroy && rndm (0, 1))
263	{
264	remove_ob (op);
265	free_object (op);
266	}
267	}
268	}	207	}
269		208
270	/* convert materialname to materialtype_t */	209	/* convert materialname to materialtype_t */
271		210
272	materialtype_t *	211	materialtype_t *
273	name_to_material (const char *name)	212	name_to_material (const shstr &name)
274	{	213	{
275	materialtype_t mt, nmt;	214	for (materialtype_t *mt = materialt; mt && mt->next; mt = mt->next)
276		215	if (name == mt->name)
277	mt = NULL;
278	for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
279	{
280	if (strcmp (name, nmt->name) == 0)
281	{
282	mt = nmt;
283	break;
284	}
285	}
286	return mt;	216	return mt;
		217
		218	return materialt;
287	}	219	}
288		220
289	/* when doing transmutation of objects, we have to recheck the resistances,	221	/* when doing transmutation of objects, we have to recheck the resistances,
290	* as some that did not apply previously, may apply now.	222	* as some that did not apply previously, may apply now.
291	*/	223	*/
…		…
300	return;	232	return;
301		233
302	if (change->materialname != NULL && strcmp (op->materialname, change->materialname))	234	if (change->materialname != NULL && strcmp (op->materialname, change->materialname))
303	return;	235	return;
304		236
305	if (!IS_ARMOR (op))	237	if (!op->is_armor ())
306	return;	238	return;
307		239
308	mt = name_to_material (op->materialname);	240	mt = name_to_material (op->materialname);
309	if (!mt)	241	if (!mt)
310	{	242	{
311	LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->name, &op->name, &op->materialname);	243	LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->archname, &op->name, &op->materialname);
312	return;	244	return;
313	}	245	}
314		246
315	for (j = 0; j < NROFATTACKS; j++)	247	for (j = 0; j < NROFATTACKS; j++)
316	if (op->resist[j] == 0 && change->resist[j] != 0)	248	if (op->resist[j] == 0 && change->resist[j] != 0)
…		…
340		272
341	if (nmt == NULL)	273	if (nmt == NULL)
342	{	274	{
343	lmt = NULL;	275	lmt = NULL;
344	#ifndef NEW_MATERIAL_CODE	276	#ifndef NEW_MATERIAL_CODE
345	for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)	277	for (mt = materialt; mt && mt->next; mt = mt->next)
346	{	278	{
347	if (op->material & mt->material)	279	if (op->materials & mt->material)
348	{	280	{
349	lmt = mt;	281	lmt = mt;
350	break;	282	break;
351	}	283	}
352	}	284	}
353		285
354	#else	286	#else
355	for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)	287	for (mt = materialt; mt && mt->next; mt = mt->next)
356	{	288	{
357	if (op->material & mt->material && rndm (1, 100) <= mt->chance &&	289	if (op->materials & mt->material && rndm (1, 100) <= mt->chance &&
358	difficulty >= mt->difficulty && (op->magic >= mt->magic \|\| mt->magic == 0))	290	difficulty >= mt->difficulty && (op->magic >= mt->magic \|\| mt->magic == 0))
359	{	291	{
360	lmt = mt;	292	lmt = mt;
361	if (!(IS_WEAPON (op) \|\| IS_ARMOR (op)))	293	if (!(op->is_weapon () \|\| op->is_armor ()))
362	break;	294	break;
363	}	295	}
364	}	296	}
365	#endif	297	#endif
366	}	298	}
…		…
374	#ifndef NEW_MATERIAL_CODE	306	#ifndef NEW_MATERIAL_CODE
375	op->materialname = lmt->name;	307	op->materialname = lmt->name;
376	return;	308	return;
377	#else	309	#else
378		310
379	if (op->stats.dam && IS_WEAPON (op))	311	if (op->stats.dam && op->is_weapon ())
380	{	312	{
381	op->stats.dam += lmt->damage;	313	op->stats.dam += lmt->damage;
382	if (op->stats.dam < 1)	314	if (op->stats.dam < 1)
383	op->stats.dam = 1;	315	op->stats.dam = 1;
384	}	316	}
		317
385	if (op->stats.sp && op->type == BOW)	318	if (op->stats.sp && op->type == BOW)
386	op->stats.sp += lmt->sp;	319	op->stats.sp += lmt->sp;
387	if (op->stats.wc && IS_WEAPON (op))	320	if (op->stats.wc && op->is_weapon ())
388	op->stats.wc += lmt->wc;	321	op->stats.wc += lmt->wc;
389	if (IS_ARMOR (op))	322	if (op->is_armor ())
390	{	323	{
391	if (op->stats.ac)	324	if (op->stats.ac)
392	op->stats.ac += lmt->ac;	325	op->stats.ac += lmt->ac;
393	for (j = 0; j < NROFATTACKS; j++)	326	for (j = 0; j < NROFATTACKS; j++)
394	if (op->resist[j] != 0)	327	if (op->resist[j] != 0)
…		…
398	op->resist[j] = 100;	331	op->resist[j] = 100;
399	if (op->resist[j] < -100)	332	if (op->resist[j] < -100)
400	op->resist[j] = -100;	333	op->resist[j] = -100;
401	}	334	}
402	}	335	}
403	op->materialname = add_string (lmt->name);	336	op->materialname = lmt->name;
404	/* dont make it unstackable if it doesn't need to be */	337	/* dont make it unstackable if it doesn't need to be */
405	if (IS_WEAPON (op) \|\| IS_ARMOR (op))	338	if (op->is_weapon () \|\| op->is_armor ())
406	{	339	{
407	op->weight = (op->weight * lmt->weight) / 100;	340	op->weight = (op->weight * lmt->weight) / 100;
408	op->value = (op->value * lmt->value) / 100;	341	op->value = (op->value * lmt->value) / 100;
409	}	342	}
410	#endif	343	#endif
…		…
545	return;	478	return;
546	}	479	}
547		480
548	/////////////////////////////////////////////////////////////////////////////	481	/////////////////////////////////////////////////////////////////////////////
549		482
		483	void
		484	fork_abort (const char *msg)
		485	{
		486	if (!fork ())
		487	{
		488	signal (SIGABRT, SIG_DFL);
		489	// try to put corefiles into a subdirectory, if existing, to allow
		490	// an administrator to reduce the I/O load.
		491	chdir ("cores");
		492	abort ();
		493	}
		494
		495	LOG (llevError, "fork abort: %s\n", msg);
		496	}
		497
550	void *alloc (int s) throw (std::bad_alloc)	498	void *salloc_ (int n) throw (std::bad_alloc)
551	{	499	{
		500	#ifdef PREFER_MALLOC
		501	void *ptr = malloc (n);
		502	#else
552	void *p = g_slice_alloc (s);	503	void *ptr = g_slice_alloc (n);
		504	#endif
553		505
554	if (!p)	506	if (!ptr)
555	throw std::bad_alloc ();	507	throw std::bad_alloc ();
556		508
557	return p;	509	return ptr;
		510	}
		511
		512	void salloc_ (int n, void src) throw (std::bad_alloc)
		513	{
		514	void *ptr = salloc_ (n);
		515
		516	if (src)
		517	memcpy (ptr, src, n);
		518	else
		519	memset (ptr, 0, n);
		520
		521	return ptr;
558	}	522	}
559		523
560	void assign (char dst, const char src, int maxlen)	524	void assign (char dst, const char src, int maxlen)
561	{	525	{
562	if (!src)	526	if (!src)
…		…
579	}	543	}
580	else	544	else
581	memcpy (dst, src, len + 1);	545	memcpy (dst, src, len + 1);
582	}	546	}
583		547
		548	const std::string
		549	format (const char *format, ...)
		550	{
		551	int len;
		552
		553	{
		554	char buf[128];
		555
		556	va_list ap;
		557	va_start (ap, format);
		558	len = vsnprintf (buf, sizeof (buf), format, ap);
		559	va_end (ap);
		560
		561	assert (len >= 0); // shield againstz broken vsnprintf's
		562
		563	// was our static buffer short enough?
		564	if (len < sizeof (buf))
		565	return std::string (buf, len);
		566	}
		567
		568	{
		569	// longer, try harder
		570	char *buf = salloc<char> (len + 1);
		571
		572	va_list ap;
		573	va_start (ap, format);
		574	vsnprintf (buf, len + 1, format, ap);
		575	va_end (ap);
		576
		577	const std::string s (buf, len);
		578	sfree<char> (buf, len + 1);
		579
		580	return buf;
		581	}
		582	}
		583
		584	tstamp now ()
		585	{
		586	struct timeval tv;
		587
		588	gettimeofday (&tv, 0);
		589	return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
		590	}
		591
		592	int
		593	similar_direction (int a, int b)
		594	{
		595	if (!a \|\| !b)
		596	return 0;
		597
		598	int diff = (b - a) & 7;
		599	return diff <= 1 \|\| diff >= 7;
		600	}
		601
		602	/* crc32 0xdebb20e3 table and supplementary functions. */
		603	extern const uint32_t crc_32_tab[256] =
		604	{
		605	0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
		606	0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
		607	0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
		608	0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
		609	0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
		610	0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
		611	0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
		612	0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
		613	0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
		614	0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
		615	0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
		616	0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
		617	0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
		618	0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
		619	0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
		620	0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
		621	0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
		622	0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
		623	0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
		624	0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
		625	0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
		626	0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
		627	0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
		628	0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
		629	0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
		630	0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
		631	0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
		632	0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
		633	0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
		634	0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
		635	0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
		636	0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
		637	0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
		638	0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
		639	0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
		640	0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
		641	0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
		642	0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
		643	0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
		644	0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
		645	0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
		646	0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
		647	0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
		648	0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
		649	0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
		650	0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
		651	0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
		652	0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
		653	0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
		654	0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
		655	0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
		656	0x2d02ef8dL
		657	};
		658
		659

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Comparing deliantra/server/common/utils.C (file contents): Revision 1.14 by root, Thu Sep 14 01:34:41 2006 UTC vs. Revision 1.59 by root, Thu Jun 7 19:12:22 2007 UTC

Diff Legend

Comparing deliantra/server/common/utils.C (file contents):
Revision 1.14 by root, Thu Sep 14 01:34:41 2006 UTC vs.
Revision 1.59 by root, Thu Jun 7 19:12:22 2007 UTC