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

Comparing deliantra/server/common/utils.C (file contents):
Revision 1.25 by root, Sun Dec 17 23:10:34 2006 UTC vs.
Revision 1.51 by root, Mon Apr 23 18:09:57 2007 UTC

…		…
1	/*	1	/*
2	CrossFire, A Multiplayer game for X-windows	2	* CrossFire, A Multiplayer game for X-windows
3		3	*
		4	* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
4	Copyright (C) 2002 Mark Wedel & Crossfire Development Team	5	* Copyright (C) 2002 Mark Wedel & Crossfire Development Team
5	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (C) 1992 Frank Tore Johansen
6		7	*
7	This program is free software; you can redistribute it and/or modify	8	* This program 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 2 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, write to the Free Software
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20		21	*
21	The authors can be reached via e-mail at <crossfire@schmorp.de>	22	* The authors can be reached via e-mail at <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 <sys/time.h>
33	#include <time.h>
34	#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	}
35		79
36	/*	80	/*
37	* The random functions here take luck into account when rolling random	81	* The random functions here take luck into account when rolling random
38	* 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
39	* difference becomes in the random numbers. IE, the effect is lessened	83	* difference becomes in the random numbers. IE, the effect is lessened
46	* 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,
47	* 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.
48	* Generally, op should be the player/caster/hitter requesting the roll,	92	* Generally, op should be the player/caster/hitter requesting the roll,
49	* not the recipient (ie, the poor slob getting hit). [garbled 20010916]	93	* not the recipient (ie, the poor slob getting hit). [garbled 20010916]
50	*/	94	*/
51
52	int	95	int
53	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)
54	{	97	{
		98	int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */
		99
		100	if (r_max < 1 \|\| r_max < r_min)
		101	{
		102	LOG (llevError, "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	{
55	int omin, diff, luck, base, ran;	126	sint64 omin, diff, luck, ran;
		127	int base;
56		128
57	omin = min;	129	omin = min;
58	diff = max - min + 1;	130	diff = max - min + 1;
59	((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */	131	((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
60		132
61	if (max < 1 \|\| diff < 1)	133	if (max < 1 \|\| diff < 1)
62	{	134	{
63	LOG (llevError, "Calling random_roll with min=%d max=%d\n", min, max);	135	LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
64	return (min); /* avoids a float exception */	136	return (min); /* avoids a float exception */
65	}	137	}
66		138
67	ran = RANDOM ();	139	/*
		140	* Make a call to get two 32 bit unsigned random numbers, and just to
		141	* a little bitshifting.
		142	*/
		143	ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31);
68		144
69	if (op->type != PLAYER)	145	if (op->type != PLAYER)
70	return ((ran % diff) + min);	146	return ((ran % diff) + min);
71		147
72	luck = op->stats.luck;	148	luck = op->stats.luck;
73	if (RANDOM () % base < MIN (10, abs (luck)))	149	if (rndm (base) < MIN (10, abs (luck)))
74	{	150	{
75	/* we have a winner */	151	/* we have a winner */
76	((luck > 0) ? (luck = 1) : (luck = -1));	152	((luck > 0) ? (luck = 1) : (luck = -1));
77	diff -= luck;	153	diff -= luck;
78	if (diff < 1)	154	if (diff < 1)
79	return (omin); /check again /	155	return (omin); /check again /
80	((goodbad) ? (min += luck) : (diff));	156	((goodbad) ? (min += luck) : (diff));
81		157
82	return (MAX (omin, MIN (max, (ran % diff) + min)));	158	return (MAX (omin, MIN (max, (ran % diff) + min)));
83	}	159	}
84	return ((ran % diff) + min);
85	}
86		160
87	/*
88	* This is a 64 bit version of random_roll above. This is needed
89	* for exp loss calculations for players changing religions.
90	*/
91
92	sint64
93	random_roll64 (sint64 min, sint64 max, const object *op, int goodbad)
94	{
95	sint64 omin, diff, luck, ran;
96	int base;
97
98	omin = min;
99	diff = max - min + 1;
100	((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
101
102	if (max < 1 \|\| diff < 1)
103	{
104	LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
105	return (min); /* avoids a float exception */
106	}
107
108	/* Don't know of a portable call to get 64 bit random values.
109	* So make a call to get two 32 bit random numbers, and just to
110	* a little byteshifting. Do make sure the first one is only
111	* 32 bit, so we don't get skewed results
112	*/
113	ran = (RANDOM () & 0xffffffff) \| ((sint64) RANDOM () << 32);
114
115	if (op->type != PLAYER)
116	return ((ran % diff) + min);
117
118	luck = op->stats.luck;
119	if (RANDOM () % base < MIN (10, abs (luck)))
120	{
121	/* we have a winner */
122	((luck > 0) ? (luck = 1) : (luck = -1));
123	diff -= luck;
124	if (diff < 1)
125	return (omin); /check again /
126	((goodbad) ? (min += luck) : (diff));
127
128	return (MAX (omin, MIN (max, (ran % diff) + min)));
129	}
130	return ((ran % diff) + min);	161	return ((ran % diff) + min);
131	}	162	}
132		163
133	/*	164	/*
134	* 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,
…		…
139	*/	170	*/
140		171
141	int	172	int
142	die_roll (int num, int size, const object *op, int goodbad)	173	die_roll (int num, int size, const object *op, int goodbad)
143	{	174	{
144	int min, diff, luck, total, i, gotlucky, base, ran;	175	int min, diff, luck, total, i, gotlucky, base;
145		176
146	diff = size;	177	diff = size;
147	min = 1;	178	min = 1;
148	luck = total = gotlucky = 0;	179	luck = total = gotlucky = 0;
149	((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */	180	((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
…		…
156	if (op->type == PLAYER)	187	if (op->type == PLAYER)
157	luck = op->stats.luck;	188	luck = op->stats.luck;
158		189
159	for (i = 0; i < num; i++)	190	for (i = 0; i < num; i++)
160	{	191	{
161	if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky)	192	if (rndm (base) < MIN (10, abs (luck)) && !gotlucky)
162	{	193	{
163	/* we have a winner */	194	/* we have a winner */
164	gotlucky++;	195	gotlucky++;
165	((luck > 0) ? (luck = 1) : (luck = -1));	196	((luck > 0) ? (luck = 1) : (luck = -1));
166	diff -= luck;	197	diff -= luck;
167	if (diff < 1)	198	if (diff < 1)
168	return (num); /check again /	199	return (num); /check again /
169	((goodbad) ? (min += luck) : (diff));	200	((goodbad) ? (min += luck) : (diff));
170	ran = RANDOM ();
171	total += MAX (1, MIN (size, (ran % diff) + min));	201	total += MAX (1, MIN (size, rndm (diff) + min));
172	}	202	}
173	else	203	else
174	{
175	total += RANDOM () % size + 1;	204	total += rndm (size) + 1;
176	}
177	}	205	}
		206
178	return (total);	207	return total;
179	}	208	}
180		209
181	/*
182	* Another convenience function. Returns a number between min and max.
183	* It is suggested one use these functions rather than RANDOM()%, as it
184	* would appear that a number of off-by-one-errors exist due to improper
185	* use of %. This should also prevent SIGFPE.
186	*/
187
188	int
189	rndm (int min, int max)
190	{
191	int diff;
192
193	diff = max - min + 1;
194	if (max < 1 \|\| diff < 1)
195	return (min);
196
197	return (RANDOM () % diff + min);
198	}
199
200	/* decay and destroy persihable items in a map */	210	/* decay and destroy perishable items in a map */
201
202	void	211	void
203	decay_objects (maptile *m)	212	maptile::decay_objects ()
204	{	213	{
205	int x, y, destroy;	214	if (!spaces)
206	object op, otmp;
207
208	if (m->unique)
209	return;	215	return;
210		216
211	for (x = 0; x < MAP_WIDTH (m); x++)	217	for (mapspace *ms = spaces + size (); ms-- > spaces; )
212	for (y = 0; y < MAP_HEIGHT (m); y++)	218	for (object above, op = ms->bot; op; op = above)
213	for (op = get_map_ob (m, x, y); op; op = otmp)
214	{	219	{
		220	above = op->above;
		221
215	destroy = 0;	222	bool destroy = 0;
216	otmp = op->above;	223
		224	// do not decay anything above unique floor tiles (yet :)
217	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))	225	if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
218	break;	226	break;
		227
219	if (QUERY_FLAG (op, FLAG_IS_FLOOR) \|\|	228	if (QUERY_FLAG (op, FLAG_IS_FLOOR)
220	QUERY_FLAG (op, FLAG_OBJ_ORIGINAL) \|\|	229	\|\| QUERY_FLAG (op, FLAG_OBJ_ORIGINAL)
221	QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL) \|\|	230	\|\| QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL)
222	QUERY_FLAG (op, FLAG_UNIQUE) \|\| QUERY_FLAG (op, FLAG_OVERLAY_FLOOR) \|\| QUERY_FLAG (op, FLAG_UNPAID) \|\| IS_LIVE (op))	231	\|\| QUERY_FLAG (op, FLAG_UNIQUE)
223	continue;	232	\|\| QUERY_FLAG (op, FLAG_OVERLAY_FLOOR)
224	/* otherwise, we decay and destroy */	233	\|\| QUERY_FLAG (op, FLAG_UNPAID)
225	if (IS_WEAPON (op))	234	\|\| op->is_alive ())
		235	; // do not decay
		236	else if (op->is_weapon ())
226	{	237	{
227	op->stats.dam--;	238	op->stats.dam--;
228	if (op->stats.dam < 0)	239	if (op->stats.dam < 0)
229	destroy = 1;	240	destroy = 1;
230	}	241	}
231	else if (IS_ARMOR (op))	242	else if (op->is_armor ())
232	{	243	{
233	op->stats.ac--;	244	op->stats.ac--;
234	if (op->stats.ac < 0)	245	if (op->stats.ac < 0)
235	destroy = 1;	246	destroy = 1;
236	}	247	}
237	else if (op->type == FOOD)	248	else if (op->type == FOOD)
238	{	249	{
239	op->stats.food -= rndm (5, 20);	250	op->stats.food -= rndm (5, 20);
240	if (op->stats.food < 0)	251	if (op->stats.food < 0)
241	destroy = 1;	252	destroy = 1;
242	}	253	}
243	else	254	else
244	{	255	{
245	if (op->material & M_PAPER \|\| op->material & M_LEATHER \|\|	256	int mat = op->materials;
246	op->material & M_WOOD \|\| op->material & M_ORGANIC \|\| op->material & M_CLOTH \|\| op->material & M_LIQUID)	257
		258	if (mat & M_PAPER
		259	\|\| mat & M_LEATHER
		260	\|\| mat & M_WOOD
		261	\|\| mat & M_ORGANIC
		262	\|\| mat & M_CLOTH
		263	\|\| mat & M_LIQUID
		264	\|\| (mat & M_IRON && rndm (1, 5) == 1)
		265	\|\| (mat & M_GLASS && rndm (1, 2) == 1)
		266	\|\| ((mat & M_STONE \|\| mat & M_ADAMANT) && rndm (1, 10) == 1)
		267	\|\| ((mat & M_SOFT_METAL \|\| mat & M_BONE) && rndm (1, 3) == 1)
		268	\|\| (mat & M_ICE && temp > 32))
247	destroy = 1;	269	destroy = 1;
248	if (op->material & M_IRON && rndm (1, 5) == 1)
249	destroy = 1;
250	if (op->material & M_GLASS && rndm (1, 2) == 1)
251	destroy = 1;
252	if ((op->material & M_STONE \|\| op->material & M_ADAMANT) && rndm (1, 10) == 1)
253	destroy = 1;
254	if ((op->material & M_SOFT_METAL \|\| op->material & M_BONE) && rndm (1, 3) == 1)
255	destroy = 1;
256	if (op->material & M_ICE && MAP_TEMP (m) > 32)
257	destroy = 1;
258	}	270	}
		271
259	/* adjust overall chance below */	272	/* adjust overall chance below */
260	if (destroy && rndm (0, 1))	273	if (destroy && rndm (0, 1))
261	op->destroy ();	274	op->destroy ();
262	}	275	}
263	}	276	}
264		277
265	/* convert materialname to materialtype_t */	278	/* convert materialname to materialtype_t */
266		279
267	materialtype_t *	280	materialtype_t *
268	name_to_material (const char *name)	281	name_to_material (const shstr &name)
269	{	282	{
270	materialtype_t mt, nmt;	283	for (materialtype_t *mt = materialt; mt && mt->next; mt = mt->next)
271		284	if (name == mt->name)
272	mt = NULL;
273	for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
274	{
275	if (strcmp (name, nmt->name) == 0)
276	{
277	mt = nmt;
278	break;
279	}
280	}
281	return mt;	285	return mt;
		286
		287	return materialt;
282	}	288	}
283		289
284	/* when doing transmutation of objects, we have to recheck the resistances,	290	/* when doing transmutation of objects, we have to recheck the resistances,
285	* as some that did not apply previously, may apply now.	291	* as some that did not apply previously, may apply now.
286	*/	292	*/
…		…
295	return;	301	return;
296		302
297	if (change->materialname != NULL && strcmp (op->materialname, change->materialname))	303	if (change->materialname != NULL && strcmp (op->materialname, change->materialname))
298	return;	304	return;
299		305
300	if (!IS_ARMOR (op))	306	if (!op->is_armor ())
301	return;	307	return;
302		308
303	mt = name_to_material (op->materialname);	309	mt = name_to_material (op->materialname);
304	if (!mt)	310	if (!mt)
305	{	311	{
…		…
335		341
336	if (nmt == NULL)	342	if (nmt == NULL)
337	{	343	{
338	lmt = NULL;	344	lmt = NULL;
339	#ifndef NEW_MATERIAL_CODE	345	#ifndef NEW_MATERIAL_CODE
340	for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)	346	for (mt = materialt; mt && mt->next; mt = mt->next)
341	{	347	{
342	if (op->material & mt->material)	348	if (op->materials & mt->material)
343	{	349	{
344	lmt = mt;	350	lmt = mt;
345	break;	351	break;
346	}	352	}
347	}	353	}
348		354
349	#else	355	#else
350	for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next)	356	for (mt = materialt; mt && mt->next; mt = mt->next)
351	{	357	{
352	if (op->material & mt->material && rndm (1, 100) <= mt->chance &&	358	if (op->materials & mt->material && rndm (1, 100) <= mt->chance &&
353	difficulty >= mt->difficulty && (op->magic >= mt->magic \|\| mt->magic == 0))	359	difficulty >= mt->difficulty && (op->magic >= mt->magic \|\| mt->magic == 0))
354	{	360	{
355	lmt = mt;	361	lmt = mt;
356	if (!(IS_WEAPON (op) \|\| IS_ARMOR (op)))	362	if (!(op->is_weapon () \|\| op->is_armor ()))
357	break;	363	break;
358	}	364	}
359	}	365	}
360	#endif	366	#endif
361	}	367	}
…		…
369	#ifndef NEW_MATERIAL_CODE	375	#ifndef NEW_MATERIAL_CODE
370	op->materialname = lmt->name;	376	op->materialname = lmt->name;
371	return;	377	return;
372	#else	378	#else
373		379
374	if (op->stats.dam && IS_WEAPON (op))	380	if (op->stats.dam && op->is_weapon ())
375	{	381	{
376	op->stats.dam += lmt->damage;	382	op->stats.dam += lmt->damage;
377	if (op->stats.dam < 1)	383	if (op->stats.dam < 1)
378	op->stats.dam = 1;	384	op->stats.dam = 1;
379	}	385	}
		386
380	if (op->stats.sp && op->type == BOW)	387	if (op->stats.sp && op->type == BOW)
381	op->stats.sp += lmt->sp;	388	op->stats.sp += lmt->sp;
382	if (op->stats.wc && IS_WEAPON (op))	389	if (op->stats.wc && op->is_weapon ())
383	op->stats.wc += lmt->wc;	390	op->stats.wc += lmt->wc;
384	if (IS_ARMOR (op))	391	if (op->is_armor ())
385	{	392	{
386	if (op->stats.ac)	393	if (op->stats.ac)
387	op->stats.ac += lmt->ac;	394	op->stats.ac += lmt->ac;
388	for (j = 0; j < NROFATTACKS; j++)	395	for (j = 0; j < NROFATTACKS; j++)
389	if (op->resist[j] != 0)	396	if (op->resist[j] != 0)
…		…
393	op->resist[j] = 100;	400	op->resist[j] = 100;
394	if (op->resist[j] < -100)	401	if (op->resist[j] < -100)
395	op->resist[j] = -100;	402	op->resist[j] = -100;
396	}	403	}
397	}	404	}
398	op->materialname = add_string (lmt->name);	405	op->materialname = lmt->name;
399	/* dont make it unstackable if it doesn't need to be */	406	/* dont make it unstackable if it doesn't need to be */
400	if (IS_WEAPON (op) \|\| IS_ARMOR (op))	407	if (op->is_weapon () \|\| op->is_armor ())
401	{	408	{
402	op->weight = (op->weight * lmt->weight) / 100;	409	op->weight = (op->weight * lmt->weight) / 100;
403	op->value = (op->value * lmt->value) / 100;	410	op->value = (op->value * lmt->value) / 100;
404	}	411	}
405	#endif	412	#endif
…		…
540	return;	547	return;
541	}	548	}
542		549
543	/////////////////////////////////////////////////////////////////////////////	550	/////////////////////////////////////////////////////////////////////////////
544		551
545	#if 0	552	void
546	refcounted *refcounted::rc_first;	553	fork_abort (const char *msg)
547
548	refcounted::refcounted ()
549	{	554	{
550	refcnt = 0;	555	if (!fork ())
551	rc_next = rc_first;	556	{
552	rc_first = this;	557	signal (SIGABRT, SIG_DFL);
553	}	558	abort ();
		559	}
554		560
555	refcounted::~refcounted ()	561	LOG (llevError, "fork abort: %s\n", msg);
556	{
557	assert (!rc_next);
558	assert (!refcnt);
559	}	562	}
		563
		564	void *salloc_ (int n) throw (std::bad_alloc)
		565	{
		566	#ifdef PREFER_MALLOC
		567	void *ptr = malloc (n);
		568	#else
		569	void *ptr = g_slice_alloc (n);
560	#endif	570	#endif
561
562	void *salloc_ (int n) throw (std::bad_alloc)
563	{
564	void *ptr = g_slice_alloc (n);
565		571
566	if (!ptr)	572	if (!ptr)
567	throw std::bad_alloc ();	573	throw std::bad_alloc ();
568		574
569	return ptr;	575	return ptr;
…		…
603	}	609	}
604	else	610	else
605	memcpy (dst, src, len + 1);	611	memcpy (dst, src, len + 1);
606	}	612	}
607		613
		614	const std::string
		615	format (const char *format, ...)
		616	{
		617	int len;
		618
		619	{
		620	char buf[128];
		621
		622	va_list ap;
		623	va_start (ap, format);
		624	len = vsnprintf (buf, sizeof (buf), format, ap);
		625	va_end (ap);
		626
		627	assert (len >= 0); // shield againstz broken vsnprintf's
		628
		629	// was our static buffer short enough?
		630	if (len < sizeof (buf))
		631	return std::string (buf, len);
		632	}
		633
		634	{
		635	// longer, try harder
		636	char *buf = salloc<char> (len + 1);
		637
		638	va_list ap;
		639	va_start (ap, format);
		640	vsnprintf (buf, len + 1, format, ap);
		641	va_end (ap);
		642
		643	const std::string s (buf, len);
		644	sfree<char> (buf, len + 1);
		645
		646	return buf;
		647	}
		648	}
		649
608	tstamp now ()	650	tstamp now ()
609	{	651	{
610	struct timeval tv;	652	struct timeval tv;
611		653
612	gettimeofday (&tv, 0);	654	gettimeofday (&tv, 0);
613	return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);	655	return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
614	}	656	}
615		657
		658	int
		659	similar_direction (int a, int b)
		660	{
		661	if (!a \|\| !b)
		662	return 0;
		663
		664	int diff = (b - a) & 7;
		665	return diff <= 1 \|\| diff >= 7;
		666	}
		667
		668	/* crc32 0xdebb20e3 table and supplementary functions. */
		669	extern const uint32_t crc_32_tab[256] =
		670	{
		671	0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
		672	0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
		673	0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
		674	0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
		675	0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
		676	0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
		677	0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
		678	0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
		679	0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
		680	0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
		681	0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
		682	0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
		683	0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
		684	0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
		685	0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
		686	0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
		687	0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
		688	0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
		689	0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
		690	0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
		691	0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
		692	0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
		693	0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
		694	0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
		695	0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
		696	0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
		697	0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
		698	0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
		699	0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
		700	0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
		701	0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
		702	0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
		703	0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
		704	0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
		705	0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
		706	0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
		707	0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
		708	0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
		709	0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
		710	0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
		711	0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
		712	0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
		713	0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
		714	0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
		715	0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
		716	0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
		717	0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
		718	0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
		719	0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
		720	0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
		721	0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
		722	0x2d02ef8dL
		723	};
		724
		725

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Comparing deliantra/server/common/utils.C (file contents): Revision 1.25 by root, Sun Dec 17 23:10:34 2006 UTC vs. Revision 1.51 by root, Mon Apr 23 18:09:57 2007 UTC

Diff Legend

Comparing deliantra/server/common/utils.C (file contents):
Revision 1.25 by root, Sun Dec 17 23:10:34 2006 UTC vs.
Revision 1.51 by root, Mon Apr 23 18:09:57 2007 UTC