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

Comparing deliantra/server/common/utils.C (file contents):
Revision 1.21 by root, Tue Dec 12 20:53:02 2006 UTC vs.
Revision 1.63 by root, Mon Aug 6 10:54:11 2007 UTC

…		…
1	/*	1	/*
2	CrossFire, A Multiplayer game for X-windows	2	* This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
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
8	it under the terms of the GNU General Public License as published by	9	* it under the terms of the GNU General Public License as published by
9	the Free Software Foundation; either version 2 of the License, or	10	* the Free Software Foundation, either version 3 of the License, or
10	(at your option) any later version.	11	* (at your option) 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,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.	16	* GNU General Public License 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
18	along with this program; if not, write to the Free Software	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	*
20
21	The authors can be reached via e-mail at <crossfire@schmorp.de>	21	* The authors can be reached via e-mail to <crossfire@schmorp.de>
22	*/	22	*/
23		23
24	/*	24	/*
25	* General convenience functions for crossfire.	25	* General convenience functions for crossfire.
26	*/	26	*/
		27
		28	#include <cstdlib>
		29	#include <sys/types.h>
		30	#include <unistd.h>
		31	#include <sys/time.h>
		32	#include <time.h>
		33	#include <signal.h>
27		34
28	#include <global.h>	35	#include <global.h>
29	#include <funcpoint.h>	36	#include <funcpoint.h>
30	#include <material.h>	37	#include <material.h>
31		38
32	#include <glib.h>	39	#include <glib.h>
		40
		41	refcnt_base::refcnt_t refcnt_dummy;
		42
		43	rand_gen rndm;
		44
		45	void
		46	tausworthe_random_generator::seed (uint32_t seed)
		47	{
		48	state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U;
		49	state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U;
		50	state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U;
		51	state [3] = state [2] * 69069U; if (state [0] < 128) state [0] += 128U;
		52
		53	for (int i = 11; --i; )
		54	operator ()();
		55	}
		56
		57	uint32_t
		58	tausworthe_random_generator::next ()
		59	{
		60	state [0] = ((state [0] & 0xFFFFFFFEU) << 18U) ^ (((state [0] << 6U) ^ state [0]) >> 13U);
		61	state [1] = ((state [1] & 0xFFFFFFF8U) << 2U) ^ (((state [1] << 2U) ^ state [1]) >> 27U);
		62	state [2] = ((state [2] & 0xFFFFFFF0U) << 7U) ^ (((state [2] << 13U) ^ state [2]) >> 21U);
		63	state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U);
		64
		65	return state [0] ^ state [1] ^ state [2] ^ state [3];
		66	}
		67
		68	uint32_t
		69	tausworthe_random_generator::get_range (uint32_t num)
		70	{
		71	return (next () * (uint64_t)num) >> 32U;
		72	}
		73
		74	// return a number within (min .. max)
		75	int
		76	tausworthe_random_generator::get_range (int r_min, int r_max)
		77	{
		78	return r_min + get_range (max (r_max - r_min + 1, 0));
		79	}
33		80
34	/*	81	/*
35	* The random functions here take luck into account when rolling random	82	* 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	83	* 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	84	* 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,	91	* 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.	92	* 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,	93	* Generally, op should be the player/caster/hitter requesting the roll,
47	* not the recipient (ie, the poor slob getting hit). [garbled 20010916]	94	* not the recipient (ie, the poor slob getting hit). [garbled 20010916]
48	*/	95	*/
49
50	int	96	int
51	random_roll (int min, int max, const object *op, int goodbad)	97	random_roll (int r_min, int r_max, const object *op, int goodbad)
52	{	98	{
53	int omin, diff, luck, base, ran;	99	int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */
54		100
55	omin = min;	101	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	{	102	{
61	LOG (llevError, "Calling random_roll with min=%d max=%d\n", min, max);	103	LOG (llevError \| logBacktrace, "Calling random_roll with min=%d max=%d\n", r_min, r_max);
		104	return r_min;
		105	}
		106
		107	if (op->type == PLAYER)
		108	{
		109	int luck = op->stats.luck;
		110
		111	if (rndm (base) < min (10, abs (luck)))
		112	{
		113	//TODO: take luck into account
		114	}
		115	}
		116
		117	return rndm (r_min, r_max);
		118	}
		119
		120	/*
		121	* This is a 64 bit version of random_roll above. This is needed
		122	* for exp loss calculations for players changing religions.
		123	*/
		124	sint64
		125	random_roll64 (sint64 min, sint64 max, const object *op, int goodbad)
		126	{
		127	sint64 omin = min;
		128	sint64 diff = max - min + 1;
		129	int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */
		130
		131	if (diff < 0)
		132	{
		133	LOG (llevError \| logBacktrace, "Calling random_roll64 with min=%" PRId64 " max=%" PRId64 "\n", min, max);
62	return (min); /* avoids a float exception */	134	return (min); /* avoids a float exception */
63	}	135	}
64		136
65	ran = RANDOM ();	137	/*
		138	* Make a call to get two 32 bit unsigned random numbers, and just to
		139	* a little bitshifting.
		140	*/
		141	sint64 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31);
66		142
67	if (op->type != PLAYER)	143	if (op->type != PLAYER)
68	return ((ran % diff) + min);	144	return ((ran % diff) + min);
69		145
70	luck = op->stats.luck;	146	int luck = op->stats.luck;
		147
71	if (RANDOM () % base < MIN (10, abs (luck)))	148	if (rndm (base) < MIN (10, abs (luck)))
72	{	149	{
73	/* we have a winner */	150	/* we have a winner */
74	((luck > 0) ? (luck = 1) : (luck = -1));	151	((luck > 0) ? (luck = 1) : (luck = -1));
75	diff -= luck;	152	diff -= luck;
76	if (diff < 1)	153	if (diff < 1)
77	return (omin); /check again /	154	return (omin); /check again /
		155
78	((goodbad) ? (min += luck) : (diff));	156	((goodbad) ? (min += luck) : (diff));
79		157
80	return (MAX (omin, MIN (max, (ran % diff) + min)));	158	return (MAX (omin, MIN (max, (ran % diff) + min)));
81	}	159	}
		160
82	return ((ran % diff) + min);	161	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	LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
103	return (min); /* avoids a float exception */
104	}
105
106	/* Don't know of a portable call to get 64 bit random values.
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	{
119	/* we have a winner */
120	((luck > 0) ? (luck = 1) : (luck = -1));
121	diff -= luck;
122	if (diff < 1)
123	return (omin); /check again /
124	((goodbad) ? (min += luck) : (diff));
125
126	return (MAX (omin, MIN (max, (ran % diff) + min)));
127	}
128	return ((ran % diff) + min);
129	}	162	}
130		163
131	/*	164	/*
132	* Roll a number of dice (2d3, 4d6). Uses op to determine luck,	165	* Roll a number of dice (2d3, 4d6). Uses op to determine luck,
133	* If goodbad is non-zero, luck increases the roll, if zero, it decreases.	166	* If goodbad is non-zero, luck increases the roll, if zero, it decreases.
134	* Generally, op should be the player/caster/hitter requesting the roll,	167	* Generally, op should be the player/caster/hitter requesting the roll,
135	* not the recipient (ie, the poor slob getting hit).	168	* not the recipient (ie, the poor slob getting hit).
136	* The args are num D size (ie 4d6) [garbled 20010916]	169	* The args are num D size (ie 4d6) [garbled 20010916]
137	*/	170	*/
138
139	int	171	int
140	die_roll (int num, int size, const object *op, int goodbad)	172	die_roll (int num, int size, const object *op, int goodbad)
141	{	173	{
142	int min, diff, luck, total, i, gotlucky, base, ran;	174	int min, luck, total, i, gotlucky;
143		175
144	diff = size;	176	int diff = size;
145	min = 1;	177	min = 1;
146	luck = total = gotlucky = 0;	178	luck = total = gotlucky = 0;
147	((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */	179	int base = diff > 2 ? 20 : 50; /* d2 and d3 are corner cases */
		180
148	if (size < 2 \|\| diff < 1)	181	if (size < 2 \|\| diff < 1)
149	{	182	{
150	LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);	183	LOG (llevError, "Calling die_roll with num=%d size=%d\n", num, size);
151	return (num); /* avoids a float exception */	184	return num; /* avoids a float exception */
152	}	185	}
153		186
154	if (op->type == PLAYER)	187	if (op->type == PLAYER)
155	luck = op->stats.luck;	188	luck = op->stats.luck;
156		189
157	for (i = 0; i < num; i++)	190	for (i = 0; i < num; i++)
158	{	191	{
159	if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky)	192	if (rndm (base) < MIN (10, abs (luck)) && !gotlucky)
160	{	193	{
161	/* we have a winner */	194	/* we have a winner */
162	gotlucky++;	195	gotlucky++;
163	((luck > 0) ? (luck = 1) : (luck = -1));	196	((luck > 0) ? (luck = 1) : (luck = -1));
164	diff -= luck;	197	diff -= luck;
165	if (diff < 1)	198	if (diff < 1)
166	return (num); /check again /	199	return (num); /check again /
167	((goodbad) ? (min += luck) : (diff));	200	((goodbad) ? (min += luck) : (diff));
168	ran = RANDOM ();
169	total += MAX (1, MIN (size, (ran % diff) + min));	201	total += MAX (1, MIN (size, rndm (diff) + min));
170	}	202	}
171	else	203	else
172	{
173	total += RANDOM () % size + 1;	204	total += rndm (size) + 1;
174	}
175	}	205	}
		206
176	return (total);	207	return total;
177	}
178
179	/*
180	* Another convenience function. Returns a number between min and max.
181	* It is suggested one use these functions rather than RANDOM()%, as it
182	* would appear that a number of off-by-one-errors exist due to improper
183	* use of %. This should also prevent SIGFPE.
184	*/
185
186	int
187	rndm (int min, int max)
188	{
189	int diff;
190
191	diff = max - min + 1;
192	if (max < 1 \|\| diff < 1)
193	return (min);
194
195	return (RANDOM () % diff + min);
196	}
197
198	/* decay and destroy persihable items in a map */
199
200	void
201	decay_objects (maptile *m)
202	{
203	int x, y, destroy;
204	object op, otmp;
205
206	if (m->unique)
207	return;
208
209	for (x = 0; x < MAP_WIDTH (m); x++)
210	for (y = 0; y < MAP_HEIGHT (m); y++)
211	for (op = get_map_ob (m, x, y); op; op = otmp)
212	{
213	destroy = 0;
214	otmp = op->above;
215	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
216	break;
217	if (QUERY_FLAG (op, FLAG_IS_FLOOR) \|\|
218	QUERY_FLAG (op, FLAG_OBJ_ORIGINAL) \|\|
219	QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL) \|\|
220	QUERY_FLAG (op, FLAG_UNIQUE) \|\| QUERY_FLAG (op, FLAG_OVERLAY_FLOOR) \|\| QUERY_FLAG (op, FLAG_UNPAID) \|\| IS_LIVE (op))
221	continue;
222	/* otherwise, we decay and destroy */
223	if (IS_WEAPON (op))
224	{
225	op->stats.dam--;
226	if (op->stats.dam < 0)
227	destroy = 1;
228	}
229	else if (IS_ARMOR (op))
230	{
231	op->stats.ac--;
232	if (op->stats.ac < 0)
233	destroy = 1;
234	}
235	else if (op->type == FOOD)
236	{
237	op->stats.food -= rndm (5, 20);
238	if (op->stats.food < 0)
239	destroy = 1;
240	}
241	else
242	{
243	if (op->material & M_PAPER \|\| op->material & M_LEATHER \|\|
244	op->material & M_WOOD \|\| op->material & M_ORGANIC \|\| op->material & M_CLOTH \|\| op->material & M_LIQUID)
245	destroy = 1;
246	if (op->material & M_IRON && rndm (1, 5) == 1)
247	destroy = 1;
248	if (op->material & M_GLASS && rndm (1, 2) == 1)
249	destroy = 1;
250	if ((op->material & M_STONE \|\| op->material & M_ADAMANT) && rndm (1, 10) == 1)
251	destroy = 1;
252	if ((op->material & M_SOFT_METAL \|\| op->material & M_BONE) && rndm (1, 3) == 1)
253	destroy = 1;
254	if (op->material & M_ICE && MAP_TEMP (m) > 32)
255	destroy = 1;
256	}
257	/* adjust overall chance below */
258	if (destroy && rndm (0, 1))
259	{
260	op->remove ();
261	op->destroy (0);
262	}
263	}
264	}	208	}
265		209
266	/* convert materialname to materialtype_t */	210	/* convert materialname to materialtype_t */
267		211
268	materialtype_t *	212	materialtype_t *
269	name_to_material (const char *name)	213	name_to_material (const shstr &name)
270	{	214	{
271	materialtype_t mt, nmt;	215	for (materialtype_t *mt = materialt; mt && mt->next; mt = mt->next)
		216	if (name == mt->name)
		217	return mt;
272		218
273	mt = NULL;
274	for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
275	{
276	if (strcmp (name, nmt->name) == 0)
277	{
278	mt = nmt;
279	break;
280	}
281	}
282	return mt;	219	return 0;
283	}	220	}
284		221
285	/* when doing transmutation of objects, we have to recheck the resistances,	222	/* when doing transmutation of objects, we have to recheck the resistances,
286	* as some that did not apply previously, may apply now.	223	* as some that did not apply previously, may apply now.
287	*/	224	*/
…		…
296	return;	233	return;
297		234
298	if (change->materialname != NULL && strcmp (op->materialname, change->materialname))	235	if (change->materialname != NULL && strcmp (op->materialname, change->materialname))
299	return;	236	return;
300		237
301	if (!IS_ARMOR (op))	238	if (!op->is_armor ())
302	return;	239	return;
303		240
304	mt = name_to_material (op->materialname);	241	mt = name_to_material (op->materialname);
305	if (!mt)	242	if (!mt)
306	{	243	{
307	LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->name, &op->name, &op->materialname);	244	LOG (llevError, "archetype '%s>%s' uses nonexistent material '%s'\n", &op->arch->archname, &op->name, &op->materialname);
308	return;	245	return;
309	}	246	}
310		247
311	for (j = 0; j < NROFATTACKS; j++)	248	for (j = 0; j < NROFATTACKS; j++)
312	if (op->resist[j] == 0 && change->resist[j] != 0)	249	if (op->resist[j] == 0 && change->resist[j] != 0)
…		…
323	void	260	void
324	set_materialname (object op, int difficulty, materialtype_t nmt)	261	set_materialname (object op, int difficulty, materialtype_t nmt)
325	{	262	{
326	materialtype_t mt, lmt;	263	materialtype_t mt, lmt;
327		264
328	#ifdef NEW_MATERIAL_CODE
329	int j;
330	#endif
331
332	if (op->materialname != NULL)	265	if (op->materialname != NULL)
333	return;	266	return;
334		267
335
336
337	if (nmt == NULL)	268	if (nmt == NULL)
338	{	269	{
339	lmt = NULL;	270	lmt = NULL;
340	#ifndef NEW_MATERIAL_CODE	271
341	for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)	272	for (mt = materialt; mt && mt->next; mt = mt->next)
342	{	273	if (op->materials & mt->material && rndm (1, 100) <= mt->chance &&
343	if (op->material & mt->material)	274	difficulty >= mt->difficulty && (op->magic >= mt->magic \|\| mt->magic == 0))
344	{	275	{
345	lmt = mt;	276	lmt = mt;
		277	if (!(op->is_weapon () \|\| op->is_armor ()))
346	break;	278	break;
347	}	279	}
348	}
349
350	#else
351	for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)
352	{
353	if (op->material & mt->material && rndm (1, 100) <= mt->chance &&
354	difficulty >= mt->difficulty && (op->magic >= mt->magic \|\| mt->magic == 0))
355	{
356	lmt = mt;
357	if (!(IS_WEAPON (op) \|\| IS_ARMOR (op)))
358	break;
359	}
360	}
361	#endif
362	}	280	}
363	else	281	else
364	{
365	lmt = nmt;	282	lmt = nmt;
366	}
367		283
368	if (lmt != NULL)	284	if (lmt != NULL)
369	{	285	{
370	#ifndef NEW_MATERIAL_CODE	286	if (op->stats.dam && op->is_weapon ())
371	op->materialname = lmt->name;
372	return;
373	#else
374
375	if (op->stats.dam && IS_WEAPON (op))
376	{	287	{
377	op->stats.dam += lmt->damage;	288	op->stats.dam += lmt->damage;
378	if (op->stats.dam < 1)	289	if (op->stats.dam < 1)
379	op->stats.dam = 1;	290	op->stats.dam = 1;
380	}	291	}
		292
381	if (op->stats.sp && op->type == BOW)	293	if (op->stats.sp && op->type == BOW)
382	op->stats.sp += lmt->sp;	294	op->stats.sp += lmt->sp;
383	if (op->stats.wc && IS_WEAPON (op))	295	if (op->stats.wc && op->is_weapon ())
384	op->stats.wc += lmt->wc;	296	op->stats.wc += lmt->wc;
385	if (IS_ARMOR (op))	297	if (op->is_armor ())
386	{	298	{
387	if (op->stats.ac)	299	if (op->stats.ac)
388	op->stats.ac += lmt->ac;	300	op->stats.ac += lmt->ac;
		301
389	for (j = 0; j < NROFATTACKS; j++)	302	for (int j = 0; j < NROFATTACKS; j++)
390	if (op->resist[j] != 0)	303	if (op->resist[j] != 0)
391	{	304	{
392	op->resist[j] += lmt->mod[j];	305	op->resist[j] += lmt->mod[j];
393	if (op->resist[j] > 100)	306	if (op->resist[j] > 100)
394	op->resist[j] = 100;	307	op->resist[j] = 100;
395	if (op->resist[j] < -100)	308	if (op->resist[j] < -100)
396	op->resist[j] = -100;	309	op->resist[j] = -100;
397	}	310	}
398	}	311	}
		312
399	op->materialname = add_string (lmt->name);	313	op->materialname = lmt->name;
400	/* dont make it unstackable if it doesn't need to be */	314	/* dont make it unstackable if it doesn't need to be */
401	if (IS_WEAPON (op) \|\| IS_ARMOR (op))	315	if (op->is_weapon () \|\| op->is_armor ())
402	{	316	{
403	op->weight = (op->weight * lmt->weight) / 100;	317	op->weight = (op->weight * lmt->weight) / 100;
404	op->value = (op->value * lmt->value) / 100;	318	op->value = (op->value * lmt->value) / 100;
405	}	319	}
406	#endif
407	}	320	}
408	}	321	}
409		322
410	/*	323	/*
411	* Strip out the media tags from a String.	324	* Strip out the media tags from a String.
…		…
541	return;	454	return;
542	}	455	}
543		456
544	/////////////////////////////////////////////////////////////////////////////	457	/////////////////////////////////////////////////////////////////////////////
545		458
546	#if 0	459	void
547	refcounted *refcounted::rc_first;	460	fork_abort (const char *msg)
548
549	refcounted::refcounted ()
550	{	461	{
551	refcnt = 0;	462	if (!fork ())
552	rc_next = rc_first;	463	{
553	rc_first = this;	464	signal (SIGABRT, SIG_DFL);
554	}	465	// try to put corefiles into a subdirectory, if existing, to allow
		466	// an administrator to reduce the I/O load.
		467	chdir ("cores");
		468	abort ();
		469	}
555		470
556	refcounted::~refcounted ()	471	LOG (llevError, "fork abort: %s\n", msg);
557	{
558	assert (!rc_next);
559	assert (!refcnt);
560	}	472	}
		473
		474	void *salloc_ (int n) throw (std::bad_alloc)
		475	{
		476	#ifdef PREFER_MALLOC
		477	void *ptr = malloc (n);
		478	#else
		479	void *ptr = g_slice_alloc (n);
561	#endif	480	#endif
562		481
563	void *alloc (int s) throw (std::bad_alloc)
564	{
565	void *p = g_slice_alloc (s);
566
567	if (!p)	482	if (!ptr)
568	throw std::bad_alloc ();	483	throw std::bad_alloc ();
569		484
570	return p;	485	return ptr;
		486	}
		487
		488	void salloc_ (int n, void src) throw (std::bad_alloc)
		489	{
		490	void *ptr = salloc_ (n);
		491
		492	if (src)
		493	memcpy (ptr, src, n);
		494	else
		495	memset (ptr, 0, n);
		496
		497	return ptr;
571	}	498	}
572		499
573	void assign (char dst, const char src, int maxlen)	500	void assign (char dst, const char src, int maxlen)
574	{	501	{
575	if (!src)	502	if (!src)
…		…
592	}	519	}
593	else	520	else
594	memcpy (dst, src, len + 1);	521	memcpy (dst, src, len + 1);
595	}	522	}
596		523
		524	const std::string
		525	format (const char *format, ...)
		526	{
		527	int len;
597		528
		529	{
		530	char buf[128];
		531
		532	va_list ap;
		533	va_start (ap, format);
		534	len = vsnprintf (buf, sizeof (buf), format, ap);
		535	va_end (ap);
		536
		537	assert (len >= 0); // shield againstz broken vsnprintf's
		538
		539	// was our static buffer short enough?
		540	if (len < sizeof (buf))
		541	return std::string (buf, len);
		542	}
		543
		544	{
		545	// longer, try harder
		546	char *buf = salloc<char> (len + 1);
		547
		548	va_list ap;
		549	va_start (ap, format);
		550	vsnprintf (buf, len + 1, format, ap);
		551	va_end (ap);
		552
		553	const std::string s (buf, len);
		554	sfree<char> (buf, len + 1);
		555
		556	return buf;
		557	}
		558	}
		559
		560	tstamp now ()
		561	{
		562	struct timeval tv;
		563
		564	gettimeofday (&tv, 0);
		565	return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
		566	}
		567
		568	int
		569	similar_direction (int a, int b)
		570	{
		571	if (!a \|\| !b)
		572	return 0;
		573
		574	int diff = (b - a) & 7;
		575	return diff <= 1 \|\| diff >= 7;
		576	}
		577
		578	/* crc32 0xdebb20e3 table and supplementary functions. */
		579	extern const uint32_t crc_32_tab[256] =
		580	{
		581	0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
		582	0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
		583	0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
		584	0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
		585	0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
		586	0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
		587	0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
		588	0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
		589	0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
		590	0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
		591	0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
		592	0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
		593	0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
		594	0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
		595	0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
		596	0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
		597	0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
		598	0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
		599	0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
		600	0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
		601	0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
		602	0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
		603	0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
		604	0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
		605	0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
		606	0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
		607	0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
		608	0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
		609	0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
		610	0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
		611	0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
		612	0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
		613	0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
		614	0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
		615	0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
		616	0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
		617	0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
		618	0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
		619	0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
		620	0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
		621	0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
		622	0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
		623	0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
		624	0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
		625	0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
		626	0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
		627	0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
		628	0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
		629	0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
		630	0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
		631	0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
		632	0x2d02ef8dL
		633	};
		634
		635	#if 0
		636	void xyzzy (object_ptr &a, object_ptr &o)
		637	{
		638	asm volatile ("int3");
		639	a = o;
		640	asm volatile ("int3");
		641	}
		642	#endif
		643

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Comparing deliantra/server/common/utils.C (file contents): Revision 1.21 by root, Tue Dec 12 20:53:02 2006 UTC vs. Revision 1.63 by root, Mon Aug 6 10:54:11 2007 UTC

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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.21 by root, Tue Dec 12 20:53:02 2006 UTC vs.
Revision 1.63 by root, Mon Aug 6 10:54:11 2007 UTC