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

Comparing deliantra/server/server/disease.C (file contents):
Revision 1.7 by root, Thu Oct 5 16:50:07 2006 UTC vs.
Revision 1.68 by root, Sun May 1 16:58:17 2011 UTC

…		…
1	/*	1	/*
2	CrossFire, A Multiplayer game for X-windows	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3		3	*
		4	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
4	Copyright (C) 2002 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2002 Mark Wedel & Crossfire Development Team
5	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992 Frank Tore Johansen
6		7	*
7	This program is free software; you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify it under
8	it under the terms of the GNU General Public License as published by	9	* the terms of the Affero GNU General Public License as published by the
9	the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
10	(at your option) any later version.	11	* 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 Affero GNU General Public License
18	along with this program; if not, write to the Free Software	19	* and the GNU General Public License along with this program. If not, see
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
20		21	*
21	The authors can be reached via e-mail to <crossfire@schmorp.de>	22	* The authors can be reached via e-mail to <support@deliantra.net>
22	*/	23	*/
23		24
24	/* This file contains all the code implementing diseases,	25	/* This file contains all the code implementing diseases,
25	except for odds and ends in attack.c and in	26	* except for odds and ends in attack.c and in
26	living.c*/	27	* living.c
27		28	*/
28
29		29
30	/*	30	/*
31		31
32	For DISEASES:	32	For DISEASES:
33	Stat Property Definition	33	Stat Property Definition
45	dam^ Damage How much damage it does (%?).	45	dam^ Damage How much damage it does (%?).
46	maxgrace+ Duration How long before the disease is naturally cured.	46	maxgrace+ Duration How long before the disease is naturally cured.
47	food DurCount Counter for Duration	47	food DurCount Counter for Duration
48		48
49	speed Speed How often the disease moves.	49	speed Speed How often the disease moves.
50	last_sp^ Lethargy Percentage of max speed--10 = 10% speed.	50	last_sp^ Lethargy Percentage of max speed. 10 = 10% speed.
51		51
52	maxsp^ Mana deplete Saps mana.	52	maxsp^ Mana deplete Saps mana.
53	ac^ Progressiveness How the diseases increases in severity.	53	ac^ Progressiveness How the diseases increases in severity.
54	last_eat*^ Deplete food saps food if negative	54	last_eat*^ Deplete food saps food if negative
55	last_heal GrantImmunity If nonzero, disease does NOT grant immunity	55	last_heal GrantImmunity If nonzero, disease does NOT grant immunity
…		…
126		126
127		127
128	#include <global.h>	128	#include <global.h>
129	#include <object.h>	129	#include <object.h>
130	#include <living.h>	130	#include <living.h>
131	#ifndef __CEXTRACT__
132	# include <sproto.h>	131	#include <sproto.h>
133	#endif
134	#include <spells.h>	132	#include <spells.h>
135	#include <sounds.h>	133	#include <sounds.h>
136	#include <skills.h>	134	#include <skills.h>
137		135
138	/* IMPLEMENTATION NOTES	136	/* IMPLEMENTATION NOTES
…		…
140	Diseases may be contageous. They are objects which exist in a player's	138	Diseases may be contageous. They are objects which exist in a player's
141	inventory. They themselves do nothing, except modify Symptoms, or	139	inventory. They themselves do nothing, except modify Symptoms, or
142	spread to other live objects. Symptoms are what actually damage the player:	140	spread to other live objects. Symptoms are what actually damage the player:
143	these are their own object. */	141	these are their own object. */
144		142
145	/* check if victim is susceptible to disease. */	143	/* grants immunity to plagues we've seen before. */
146	static int	144	static int
147	is_susceptible_to_disease (object victim, object disease)	145	grant_immunity (object *disease)
148	{	146	{
149	if (!QUERY_FLAG (victim, FLAG_ALIVE))	147	object *immunity;
		148	object *walk;
		149
		150	/* Don't give immunity to this disease if last_heal is set. */
		151	if (disease->last_heal)
150	return 0;	152	return 0;
151		153
152	if (strstr (disease->race, "*") && !QUERY_FLAG (victim, FLAG_UNDEAD))	154	/* first, search for an immunity of the same name */
		155	for (walk = disease->env->inv; walk; walk = walk->below)
		156	if (disease->name == walk->name && walk->is_immunity ())
		157	{
		158	walk->level = disease->level;
		159	return 1; /* just update the existing immunity. */
		160	}
		161
		162	immunity = archetype::get (shstr_immunity);
		163
		164	immunity->name = disease->name;
		165	immunity->level = disease->level;
		166	immunity->move_block = 0;
		167
		168	insert_ob_in_ob (immunity, disease->env);
		169
153	return 1;	170	return 1;
		171	}
154		172
155	if ((disease->race == undead_name) && QUERY_FLAG (victim, FLAG_UNDEAD))	173	/* argument is a disease */
		174	static object *
		175	find_symptom (object *disease)
		176	{
		177	/* check the inventory for symptoms */
		178	for (object *walk = disease->env->inv; walk; walk = walk->below)
		179	if (walk->name == disease->name && walk->type == SYMPTOM)
156	return 1;	180	return walk;
157		181
158	if ((victim->race && strstr (disease->race, victim->race)) \|\| strstr (disease->race, victim->name))
159	return 1;
160
161	return 0;	182	return NULL;
162	}
163
164	int
165	move_disease (object *disease)
166	{
167	/* first task is to determine if the disease is inside or outside of someone.
168	* If outside, we decrement 'value' until we're gone.
169	*/
170
171	if (disease->env == NULL)
172	{ /* we're outside of someone */
173	if (disease->stats.maxhp > 0)
174	disease->value--;
175	if (disease->value == 0)
176	{
177	remove_ob (disease);
178	free_object (disease);
179	return 1;
180	}
181	}
182	else
183	{
184	/* if we're inside a person, have the disease run its course */
185	/* negative foods denote "perpetual" diseases. */
186	if (disease->stats.food > 0)
187	{
188	disease->stats.food--;
189	if (disease->stats.food == 0)
190	{
191	remove_symptoms (disease); /* remove the symptoms of this disease */
192	grant_immunity (disease);
193	remove_ob (disease);
194	free_object (disease);
195	return 1;
196	}
197	}
198	}
199	/* check to see if we infect others */
200	check_infection (disease);
201
202	/* impose or modify the symptoms of the disease */
203	if (disease->env && is_susceptible_to_disease (disease->env, disease))
204	do_symptoms (disease);
205
206	return 0;
207	}	183	}
208		184
209	/* remove any symptoms of disease	185	/* remove any symptoms of disease
210	* Modified by MSW 2003-03-28 do try to find all the symptom the	186	* Modified by MSW 2003-03-28 do try to find all the symptom the
211	* player may have - I think through some odd interactoins with	187	* player may have - I think through some odd interactoins with
212	* disease level and player level and whatnot, a player could get	188	* disease level and player level and whatnot, a player could get
213	* more than one symtpom to a disease.	189	* more than one symtpom to a disease.
214	*/	190	*/
215		191	static int
216	int
217	remove_symptoms (object *disease)	192	remove_symptoms (object *disease)
218	{	193	{
219	object symptom, victim = NULL;	194	object symptom, victim = NULL;
220		195
221	while ((symptom = find_symptom (disease)) != NULL)	196	while ((symptom = find_symptom (disease)) != NULL)
222	{	197	{
223	if (!victim)	198	if (!victim)
224	victim = symptom->env;	199	victim = symptom->env;
225	remove_ob (symptom);	200
226	free_object (symptom);	201	symptom->destroy ();
227	}	202	}
		203
228	if (victim)	204	if (victim)
229	fix_player (victim);	205	victim->update_stats ();
		206
230	return 0;	207	return 0;
231	}	208	}
232		209
233	/* argument is a disease */
234	object *
235	find_symptom (object *disease)
236	{
237	object *walk;
238
239	/* check the inventory for symptoms */
240	for (walk = disease->env->inv; walk; walk = walk->below)
241	if (!strcmp (walk->name, disease->name) && walk->type == SYMPTOM)
242	return walk;
243	return NULL;
244	}
245
246	/* searches around for more victims to infect */	210	/* searches around for more victims to infect */
		211	static int
		212	check_infection (object *disease)
		213	{
		214	int range = abs (disease->magic);
		215
		216	object *op = disease->outer_env_or_self ();
		217
		218	if (!op->is_on_map ())
		219	return 0;
		220
		221	dynbuf buf;
		222	unordered_mapwalk (buf, op, -range, -range, range, range)
		223	{
		224	mapspace &ms = m->at (nx, ny);
		225
		226	if (ms.flags () & P_IS_ALIVE)
		227	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		228	infect_object (tmp, disease, 0);
		229	}
		230
		231	return 1;
		232	}
		233
		234	/* check if victim is susceptible to disease. */
		235	static int
		236	is_susceptible_to_disease (object victim, object disease)
		237	{
		238	if (!victim->flag [FLAG_ALIVE])
		239	return 0;
		240
		241	if (victim->flag [FLAG_WIZ])
		242	return 0;
		243
		244	if (disease->race.contains ("*") && !victim->flag [FLAG_UNDEAD])
		245	return 1;
		246
		247	if ((disease->race == shstr_undead) && victim->flag [FLAG_UNDEAD])
		248	return 1;
		249
		250	if ((victim->race && disease->race.contains (victim->race)) \|\| disease->race.contains (victim->name))
		251	return 1;
		252
		253	return 0;
		254	}
		255
		256	/* this function monitors the symptoms caused by the disease (if any),
		257	causes symptoms, and modifies existing symptoms in the case of
		258	existing diseases. */
		259	static int
		260	do_symptoms (object *disease)
		261	{
		262	object *symptom;
		263	object *victim;
		264	object *tmp;
		265
		266	victim = disease->env;
		267
		268	if (!victim)
		269	return 0; /* no-one to inflict symptoms on */
		270
		271	/* This is a quick hack - for whatever reason, disease->env will point
		272	* back to disease, causing endless loops. Why this happens really needs
		273	* to be found, but this should at least prevent the infinite loops.
		274	*/
		275	//TODO: should no longer be the case, monitor, and remove
		276	if (victim == disease)
		277	{
		278	LOG (llevError \| logBacktrace, "%s: disease->env points to itself", disease->debug_desc ());
		279	return 0;
		280	}
		281
		282	symptom = find_symptom (disease);
		283	if (!symptom)
		284	{
		285	/* no symptom? need to generate one! */
		286
		287	/* first check and see if the carrier of the disease is immune. If so, no symptoms! */
		288	if (!is_susceptible_to_disease (victim, disease))
		289	return 0;
		290
		291	/* check for an actual immunity */
		292	/* do an immunity check */
		293	for (tmp = victim->head_ ()->inv; tmp; tmp = tmp->below)
		294	if (tmp->name == disease->name && tmp->is_immunity ()) /* possibly an immunity, or diseased */
		295	if (tmp->level >= disease->level)
		296	return 0; /* Immune! */
		297
		298	object *new_symptom = archetype::get (shstr_symptom);
		299
		300	/* Something special done with dam. We want diseases to be more
		301	* random in what they'll kill, so we'll make the damage they
		302	* do random, note, this has a weird effect with progressive diseases.
		303	*/
		304	if (disease->stats.dam)
		305	{
		306	int dam = disease->stats.dam;
		307
		308	/* reduce the damage, on average, 50%, and making things random. */
		309
		310	dam = random_roll (1, abs (dam), victim, PREFER_LOW);
		311	if (disease->stats.dam < 0)
		312	dam = -dam;
		313
		314	new_symptom->stats.dam = dam;
		315	}
		316
		317	new_symptom->stats.maxsp = disease->stats.maxsp;
		318	new_symptom->stats.food = new_symptom->stats.maxgrace;
		319
		320	new_symptom->name = new_symptom->name_pl = disease->name;
		321
		322	new_symptom->level = disease->level;
		323	new_symptom->value = 0;
		324
		325	new_symptom->set_speed (disease->speed);
		326
		327	for (int i = 0; i < NUM_STATS; ++i)
		328	new_symptom->stats.stat (i) = disease->stats.stat (i);
		329
		330	new_symptom->stats.sp = disease->stats.sp;
		331	new_symptom->stats.food = disease->last_eat;
		332	new_symptom->stats.maxsp = disease->stats.maxsp;
		333	new_symptom->last_sp = disease->last_sp;
		334	new_symptom->stats.exp = 0;
		335	new_symptom->stats.hp = disease->stats.hp;
		336	new_symptom->msg = disease->msg;
		337	new_symptom->attacktype = disease->attacktype;
		338	new_symptom->other_arch = disease->other_arch;
		339	new_symptom->skill = disease->skill;
		340
		341	new_symptom->move_block = 0;
		342
		343	victim->head_ ()->insert (new_symptom);
		344
		345	// set owner last, as insert clears owner
		346	new_symptom->set_owner (disease->owner);
		347
		348	return 1;
		349	}
		350
		351	/* now deal with progressing diseases: we increase the debility
		352	* caused by the symptoms.
		353	*/
		354	if (disease->stats.ac)
		355	{
		356	symptom->value = clamp (symptom->value + disease->stats.ac, 0, 100*100);
		357
		358	float scale = 1.f + symptom->value / 100.f;
		359
		360	/* now rescale all the debilities */
		361	for (int i = 0; i < NUM_STATS; ++i)
		362	symptom->stats.stat (i) = clamp (int (scale * disease->stats.stat (i)), -128, 127);
		363
		364	symptom->stats.dam = clamp (scale * disease->stats.dam , -1024, 1024);
		365	symptom->stats.food = clamp (scale * disease->last_eat , -1024, 1024);
		366	symptom->stats.maxsp = clamp (scale * disease->stats.maxsp, -1024, 1024);
		367	symptom->stats.sp = clamp (scale * disease->stats.sp , -1024, 1024);
		368	symptom->stats.hp = clamp (scale * disease->stats.hp , -1024, 1024);
		369	symptom->stats.exp = 0;
		370	symptom->last_sp = disease->last_sp ? clamp (disease->last_sp / scale, 1, 1024) : 0;
		371	symptom->msg = disease->msg;
		372	symptom->attacktype = disease->attacktype;
		373	symptom->other_arch = disease->other_arch;
		374	}
		375
		376	symptom->set_flag (FLAG_APPLIED);
		377	victim->update_stats ();
		378
		379	return 1;
		380	}
		381
247	int	382	int
248	check_infection (object *disease)	383	move_disease (object *disease)
249	{	384	{
250	int x, y, range, mflags;	385	/* First task is to determine if the disease is inside or outside of someone.
251	maptile map, map2;	386	* If outside, we decrement 'value' until we're gone.
252	object *tmp;	387	*/
253		388
254	range = abs (disease->magic);
255
256	if (disease->env)	389	if (!disease->env)
257	{	390	{ /* we're outside of someone */
258	x = disease->env->x;	391	if (disease->stats.maxhp > 0)
259	y = disease->env->y;	392	disease->value--;
260	map = disease->env->map;	393
		394	if (!disease->value)
		395	{
		396	disease->destroy ();
		397	return 1;
		398	}
261	}	399	}
262	else	400	else
263	{	401	{
264	x = disease->x;	402	/* if we're inside a person, have the disease run its course */
265	y = disease->y;	403	/* negative/zero food denotes "perpetual" diseases. */
266	map = disease->map;	404	if (disease->stats.food > 0)
267	}	405	{
		406	disease->stats.food--;
268		407
269	if (!map)	408	if (!disease->stats.food)
		409	{
		410	remove_symptoms (disease); /* remove the symptoms of this disease */
		411	grant_immunity (disease);
		412	disease->destroy ();
		413	return 1;
		414	}
		415	}
		416	}
		417
		418	/* check to see if we infect others */
		419	check_infection (disease);
		420
		421	/* impose or modify the symptoms of the disease */
		422	if (disease->env && is_susceptible_to_disease (disease->env, disease))
		423	do_symptoms (disease);
		424
270	return 0;	425	return 0;
271
272	for (int i = x - range; i <= x + range; i++)
273	for (int j = y - range; j <= y + range; j++)
274	{
275	sint16 i2, j2;
276	mflags = get_map_flags (map, &map2, i, j, &i2, &j2);
277
278	if (!(mflags & P_OUT_OF_MAP) && (mflags & P_IS_ALIVE))
279	for (tmp = get_map_ob (map2, i2, j2); tmp; tmp = tmp->above)
280	infect_object (tmp, disease, 0);
281	}
282
283	return 1;
284	}	426	}
285
286		427
287	/* check to see if an object is infectable:	428	/* check to see if an object is infectable:
288	* objects with immunity aren't infectable.	429	* objects with immunity aren't infectable.
289	* objects already infected aren't infectable.	430	* objects already infected aren't infectable.
290	* dead objects aren't infectable.	431	* dead objects aren't infectable.
…		…
295	{	436	{
296	object *tmp;	437	object *tmp;
297	object *new_disease;	438	object *new_disease;
298		439
299	/* don't infect inanimate objects */	440	/* don't infect inanimate objects */
300	if (!QUERY_FLAG (victim, FLAG_MONSTER) && !(victim->type == PLAYER))	441	if (!victim->flag [FLAG_MONSTER] && !(victim->type == PLAYER))
301	return 0;	442	return 0;
302		443
303	/* check and see if victim can catch disease: diseases	444	/* check and see if victim can catch disease: diseases
304	* are specific	445	* are specific
305	*/	446	*/
…		…
309	/* roll the dice on infection before doing the inventory check! */	450	/* roll the dice on infection before doing the inventory check! */
310	if (!force && (random_roll (0, 126, victim, PREFER_HIGH) >= disease->stats.wc))	451	if (!force && (random_roll (0, 126, victim, PREFER_HIGH) >= disease->stats.wc))
311	return 0;	452	return 0;
312		453
313	/* do an immunity check */	454	/* do an immunity check */
314	if (victim->head)
315	tmp = victim->head->inv;
316	else
317	tmp = victim->inv;
318		455
319	/* There used to (IMO) be a flaw in the below - it used to be the case	456	/* There used to (IMO) be a flaw in the below - it used to be the case
320	* that if level check was done for both immunity and disease. This could	457	* that if level check was done for both immunity and disease. This could
321	* result in a person with multiple afflictions of the same disease	458	* result in a person with multiple afflictions of the same disease
322	* (eg, level 1 cold, level 2 cold, level 3 cold, etc), as long as	459	* (eg, level 1 cold, level 2 cold, level 3 cold, etc), as long as
323	* they were cast in that same order. Instead, change it so that	460	* they were cast in that same order. Instead, change it so that
324	* if you diseased, you can't get diseased more.	461	* if you diseased, you can't get diseased more.
325	*/	462	*/
326		463
327	for ( /* tmp initialized in if, above */ ; tmp; tmp = tmp->below)	464	for (tmp = victim->head_ ()->inv; tmp; tmp = tmp->below)
328	{	465	if (tmp->name == disease->name && tmp->is_immunity () && tmp->level >= disease->level)
329	if (tmp->type == SIGN && !strcmp (tmp->name, disease->name) && tmp->level >= disease->level)
330	return 0; /Immune! /	466	return 0; /* Immune! */
331	else if (tmp->type == DISEASE && !strcmp (tmp->name, disease->name))	467	else if (tmp->type == DISEASE && tmp->name == disease->name)
332	return 0; /* already diseased */	468	return 0; /* already diseased */
333	}
334		469
335	/* If we've gotten this far, go ahead and infect the victim. */	470	/* If we've gotten this far, go ahead and infect the victim. */
336	new_disease = get_object ();	471
337	copy_object (disease, new_disease);	472	new_disease = disease->clone ();
		473
338	new_disease->stats.food = disease->stats.maxgrace;	474	new_disease->stats.food = disease->stats.maxgrace;
339	new_disease->value = disease->stats.maxhp;	475	new_disease->value = disease->stats.maxhp;
340	new_disease->stats.wc -= disease->last_grace; /* self-limiting factor */	476	new_disease->stats.wc -= disease->last_grace; /* self-limiting factor */
341		477
342	/* Unfortunately, set_owner does the wrong thing to the skills pointers
343	* resulting in exp going into the owners current chosen skill.
344	*/
345
346	if (get_owner (disease))
347	{
348	set_owner (new_disease, disease->owner);
349
350	/* Only need to update skill if different */
351	if (new_disease->skill != disease->skill)
352	new_disease->skill = disease->skill;
353	}
354	else
355	{ /* for diseases which are passed by hitting, set owner and praying skill */
356	if (disease->env && disease->env->type == PLAYER)
357	{
358	object *player = disease->env;
359
360	set_owner (new_disease, player);
361
362	/* the skill pointer for these diseases should already be set up -
363	* hardcoding in 'praying' is not the right approach.
364	*/
365	}
366	}
367
368	insert_ob_in_ob (new_disease, victim);
369	/* This appears to be a horrible case of overloading 'NO_PASS'	478	/* This appears to be a horrible case of overloading 'NO_PASS'
370	* for meaning in the diseases.	479	* for meaning in the diseases.
371	*/	480	*/
372	new_disease->move_block = 0;	481	new_disease->move_block = 0;
		482
		483	// insert before setting the owner
		484	victim->head_ ()->insert (new_disease);
		485
		486	if (disease->owner)
		487	new_disease->set_owner (disease->owner);
		488	else if (object *pl = disease->in_player ())
		489	/* for diseases which are passed by hitting, set owner and skill */
		490	new_disease->set_owner (pl);
		491
373	if (new_disease->owner && new_disease->owner->type == PLAYER)	492	if (new_disease->owner && new_disease->owner->type == PLAYER)
374	{	493	{
375	char buf[128];	494	const char *buf;
376		495
377	/* if the disease has a title, it has a special infection message	496	/* if the disease has a title, it has a special infection message
378	* This messages is printed in the form MESSAGE victim	497	* This messages is printed in the form MESSAGE victim
379	*/	498	*/
380	if (new_disease->title)	499	if (new_disease->title)
381	sprintf (buf, "%s %s!!", &disease->title, &victim->name);	500	buf = format ("%s %s!!", &disease->title, &victim->name);
382	else	501	else
383	sprintf (buf, "You infect %s with your disease, %s!", &victim->name, &new_disease->name);	502	buf = format ("You infect %s with your disease, %s!", &victim->name, &new_disease->name);
384		503
385	if (victim->type == PLAYER)	504	if (victim->type == PLAYER)
386	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, new_disease->owner, buf);	505	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, new_disease->owner, buf);
387	else	506	else
388	new_draw_info (0, 4, new_disease->owner, buf);	507	new_draw_info (0, 4, new_disease->owner, buf);
389	}	508	}
		509
390	if (victim->type == PLAYER)	510	if (victim->type == PLAYER)
391	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, "You suddenly feel ill.");	511	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, "You suddenly feel ill.");
392		512
393	return 1;	513	return 1;
394
395	}	514	}
396
397
398
399	/* this function monitors the symptoms caused by the disease (if any),
400	causes symptoms, and modifies existing symptoms in the case of
401	existing diseases. */
402
403	int
404	do_symptoms (object *disease)
405	{
406	object *symptom;
407	object *victim;
408	object *tmp;
409
410	victim = disease->env;
411
412	/* This is a quick hack - for whatever reason, disease->env will point
413	* back to disease, causing endless loops. Why this happens really needs
414	* to be found, but this should at least prevent the infinite loops.
415	*/
416
417	if (victim == NULL \|\| victim == disease)
418	return 0; /* no-one to inflict symptoms on */
419
420	symptom = find_symptom (disease);
421	if (symptom == NULL)
422	{
423	/* no symptom? need to generate one! */
424	object *new_symptom;
425
426	/* first check and see if the carrier of the disease is immune. If so, no symptoms! */
427	if (!is_susceptible_to_disease (victim, disease))
428	return 0;
429
430	/* check for an actual immunity */
431	/* do an immunity check */
432	if (victim->head)
433	tmp = victim->head->inv;
434	else
435	tmp = victim->inv;
436
437	for ( /* tmp initialized in if, above */ ; tmp; tmp = tmp->below)
438	{
439	if (tmp->type == SIGN) /* possibly an immunity, or diseased */
440	if (!strcmp (tmp->name, disease->name) && tmp->level >= disease->level)
441	return 0; /Immune! /
442	}
443
444	new_symptom = get_archetype (ARCH_SYMPTOM);
445
446	/* Something special done with dam. We want diseases to be more
447	* random in what they'll kill, so we'll make the damage they
448	* do random, note, this has a weird effect with progressive diseases.
449	*/
450	if (disease->stats.dam != 0)
451	{
452	int dam = disease->stats.dam;
453
454	/* reduce the damage, on average, 50%, and making things random. */
455
456	dam = random_roll (1, FABS (dam), victim, PREFER_LOW);
457	if (disease->stats.dam < 0)
458	dam = -dam;
459	new_symptom->stats.dam = dam;
460	}
461
462
463	new_symptom->stats.maxsp = disease->stats.maxsp;
464	new_symptom->stats.food = new_symptom->stats.maxgrace;
465
466	new_symptom->name = new_symptom->name_pl = disease->name;
467
468	new_symptom->level = disease->level;
469	new_symptom->speed = disease->speed;
470	new_symptom->value = 0;
471	new_symptom->stats.Str = disease->stats.Str;
472	new_symptom->stats.Dex = disease->stats.Dex;
473	new_symptom->stats.Con = disease->stats.Con;
474	new_symptom->stats.Wis = disease->stats.Wis;
475	new_symptom->stats.Int = disease->stats.Int;
476	new_symptom->stats.Pow = disease->stats.Pow;
477	new_symptom->stats.Cha = disease->stats.Cha;
478	new_symptom->stats.sp = disease->stats.sp;
479	new_symptom->stats.food = disease->last_eat;
480	new_symptom->stats.maxsp = disease->stats.maxsp;
481	new_symptom->last_sp = disease->last_sp;
482	new_symptom->stats.exp = 0;
483	new_symptom->stats.hp = disease->stats.hp;
484	new_symptom->msg = disease->msg;
485	new_symptom->attacktype = disease->attacktype;
486	new_symptom->other_arch = disease->other_arch;
487
488	set_owner (new_symptom, disease->owner);
489
490	if (new_symptom->skill != disease->skill)
491	new_symptom->skill = disease->skill;
492
493	new_symptom->move_block = 0;
494	insert_ob_in_ob (new_symptom, victim);
495	return 1;
496	}
497
498	/* now deal with progressing diseases: we increase the debility
499	* caused by the symptoms.
500	*/
501
502	if (disease->stats.ac != 0)
503	{
504	float scale;
505
506	symptom->value += disease->stats.ac;
507	scale = 1.0 + symptom->value / 100.0;
508	/* now rescale all the debilities */
509	symptom->stats.Str = (int) (scale * disease->stats.Str);
510	symptom->stats.Dex = (int) (scale * disease->stats.Dex);
511	symptom->stats.Con = (int) (scale * disease->stats.Con);
512	symptom->stats.Wis = (int) (scale * disease->stats.Wis);
513	symptom->stats.Int = (int) (scale * disease->stats.Int);
514	symptom->stats.Pow = (int) (scale * disease->stats.Pow);
515	symptom->stats.Cha = (int) (scale * disease->stats.Cha);
516	symptom->stats.dam = (int) (scale * disease->stats.dam);
517	symptom->stats.sp = (int) (scale * disease->stats.sp);
518	symptom->stats.food = (int) (scale * disease->last_eat);
519	symptom->stats.maxsp = (int) (scale * disease->stats.maxsp);
520	symptom->last_sp = (int) (scale * disease->last_sp);
521	symptom->stats.exp = 0;
522	symptom->stats.hp = (int) (scale * disease->stats.hp);
523	symptom->msg = disease->msg;
524	symptom->attacktype = disease->attacktype;
525	symptom->other_arch = disease->other_arch;
526	}
527	SET_FLAG (symptom, FLAG_APPLIED);
528	fix_player (victim);
529	return 1;
530	}
531
532
533	/* grants immunity to plagues we've seen before. */
534	int
535	grant_immunity (object *disease)
536	{
537	object *immunity;
538	object *walk;
539
540	/* Don't give immunity to this disease if last_heal is set. */
541	if (disease->last_heal)
542	return 0;
543	/* first, search for an immunity of the same name */
544	for (walk = disease->env->inv; walk; walk = walk->below)
545	{
546	if (walk->type == 98 && !strcmp (disease->name, walk->name))
547	{
548	walk->level = disease->level;
549	return 1; /* just update the existing immunity. */
550	}
551	}
552	immunity = get_archetype ("immunity");
553	immunity->name = disease->name;
554	immunity->level = disease->level;
555	immunity->move_block = 0;
556	insert_ob_in_ob (immunity, disease->env);
557	return 1;
558
559	}
560
561		515
562	/* make the symptom do the nasty things it does */	516	/* make the symptom do the nasty things it does */
563
564	int	517	int
565	move_symptom (object *symptom)	518	move_symptom (object *symptom)
566	{	519	{
567	object *victim = symptom->env;	520	object *victim = symptom->env;
568	object *new_ob;
569	int sp_reduce;
570		521
571	if (victim == NULL \|\| victim->map == NULL)	522	if (!victim \|\| !victim->map)
572	{ /* outside a monster/player, die immediately */	523	{ /* outside a monster/player, die immediately */
573	remove_ob (symptom);	524	symptom->destroy ();
574	free_object (symptom);
575	return 0;	525	return 0;
576	}	526	}
577
578	if (symptom->stats.dam > 0)
579	hit_player (victim, symptom->stats.dam, symptom, symptom->attacktype, 1);
580	else
581	hit_player (victim, (int) MAX (1, -victim->stats.maxhp * symptom->stats.dam / 100.0), symptom, symptom->attacktype, 1);
582
583	if (symptom->stats.maxsp > 0)
584	sp_reduce = symptom->stats.maxsp;
585	else
586	sp_reduce = (int) MAX (1, victim->stats.maxsp * symptom->stats.maxsp / 100.0);
587	victim->stats.sp = MAX (0, victim->stats.sp - sp_reduce);
588		527
589	/* create the symptom "other arch" object and drop it here	528	/* create the symptom "other arch" object and drop it here
590	* under every part of the monster	529	* under every part of the monster
591	* The victim may well have died.	530	* The victim may well have died.
592	*/	531	*/
593
594	if (victim->map == NULL)	532	if (victim->map)
595	return 0;	533	{
		534	victim->play_sound (symptom->sound);
		535
596	if (symptom->other_arch)	536	if (symptom->other_arch)
597	{	537	for (object *tmp = victim->head_ (); tmp; tmp = tmp->more)
598	object *tmp;
599
600	tmp = victim;
601	if (tmp->head != NULL)
602	tmp = tmp->head;
603	for ( /tmp initialized above / ; tmp != NULL; tmp = tmp->more)
604	{	538	{
605	new_ob = arch_to_object (symptom->other_arch);	539	object *new_ob = symptom->other_arch->instance ();
606	new_ob->x = tmp->x;	540	new_ob->x = tmp->x;
607	new_ob->y = tmp->y;	541	new_ob->y = tmp->y;
608	new_ob->map = victim->map;	542	new_ob->map = victim->map;
609	insert_ob_in_map (new_ob, victim->map, victim, 0);	543	insert_ob_in_map (new_ob, victim->map, victim, 0);
610	}	544	}
611	}	545	}
		546
		547	int damage =
		548	symptom->stats.dam > 0
		549	? symptom->stats.dam
		550	: max (1, victim->stats.maxhp * -symptom->stats.dam / 100);
		551
		552	hit_player (victim, damage, symptom, symptom->attacktype, 1);
		553
		554	int sp_reduce =
		555	symptom->stats.maxsp > 0
		556	? symptom->stats.maxsp
		557	: max (1, victim->stats.maxsp * -symptom->stats.maxsp / 100);
		558
		559	victim->stats.sp = max (0, victim->stats.sp - sp_reduce);
		560
612	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, symptom->msg);	561	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, symptom->msg);
613		562
614	return 1;	563	return 1;
615	}	564	}
616		565
617
618	/* possibly infect due to direct physical contact	566	/* possibly infect due to direct physical contact
619	i.e., AT_PHYSICAL-- called from "hit_player_attacktype" */	567	* i.e., AT_PHYSICAL-- called from "hit_player_attacktype" */
620
621	int	568	int
622	check_physically_infect (object victim, object hitter)	569	check_physically_infect (object victim, object hitter)
623	{	570	{
624	object *walk;
625
626	/* search for diseases, give every disease a chance to infect */	571	/* search for diseases, give every disease a chance to infect */
627	for (walk = hitter->inv; walk != NULL; walk = walk->below)	572	for (object *disease = hitter->inv; disease; disease = disease->below)
628	if (walk->type == DISEASE)	573	if (disease->type == DISEASE)
629	infect_object (victim, walk, 0);	574	infect_object (victim, disease, 0);
		575
630	return 1;	576	return 1;
631	}	577	}
632		578
633	/* find a disease in someone*/
634	object *
635	find_disease (object *victim)
636	{
637	object *walk;
638
639	for (walk = victim->inv; walk; walk = walk->below)
640	if (walk->type == DISEASE)
641	return walk;
642	return NULL;
643	}
644
645	/* do the cure disease stuff, from the spell "cure disease" */	579	/* do the cure disease stuff, from the spell "cure disease" */
646
647	int	580	int
648	cure_disease (object sufferer, object caster)	581	cure_disease (object sufferer, object caster, object *spell)
649	{	582	{
650	object disease, next;	583	object disease, next;
651	int casting_level;
652	int cure = 0;	584	int cure = 0;
653		585
654	if (caster)
655	casting_level = caster->level;
656	else
657	casting_level = 1000; /* if null caster, CURE all. */	586	int casting_level = caster ? caster->level : 1000; /* if null caster, CURE all. */
658		587
659	for (disease = sufferer->inv; disease; disease = next)	588	for (disease = sufferer->inv; disease; disease = next)
660	{	589	{
661	next = disease->below;	590	next = disease->below;
662		591
663	if (disease->type == DISEASE)	592	if (disease->type == DISEASE)
664	{ /* attempt to cure this disease */	593	{ /* attempt to cure this disease */
665	/* If caster lvel is higher than disease level, cure chance	594	/* If caster level is higher than disease level, cure chance
666	* is automatic. If lower, then the chance is basically	595	* is automatic. If lower, then the chance is basically
667	* 1 in level_diff - if there is a 5 level difference, chance	596	* 1 in level_diff - if there is a 5 level difference, chance
668	* is 1 in 5.	597	* is 1 in 5.
669	*/	598	*/
670	if ((casting_level >= disease->level) \|\| (!(random_roll (0, (disease->level - casting_level - 1), caster, PREFER_LOW))))	599	if ((casting_level >= disease->level) \|\| (!(random_roll (0, (disease->level - casting_level - 1), caster, PREFER_LOW))))
671	{	600	{
672
673	remove_symptoms (disease);	601	remove_symptoms (disease);
674	remove_ob (disease);
675	cure = 1;	602	cure = 1;
		603
676	if (caster)	604	if (caster && spell)
677	change_exp (caster, disease->stats.exp, caster->chosen_skill ? &caster->chosen_skill->skill : (const char *) 0, 0);	605	change_exp (caster, disease->stats.exp, spell->skill, SK_EXP_SKILL_ONLY);
678	free_object (disease);	606
		607	disease->destroy ();
679	}	608	}
680	}	609	}
681	}	610	}
		611
682	if (cure)	612	if (cure)
683	{	613	{
684	/* Only draw these messages once */	614	/* Only draw these messages once */
685	if (caster)	615	if (caster)
686	new_draw_info_format (NDI_UNIQUE, 0, caster, "You cure a disease!");	616	new_draw_info_format (NDI_UNIQUE, 0, caster, "You cure a disease!");
		617
687	new_draw_info (NDI_UNIQUE, 0, sufferer, "You no longer feel diseased.");	618	new_draw_info (NDI_UNIQUE, 0, sufferer, "You no longer feel diseased.");
688	}	619	}
		620
689	return 1;	621	return 1;
690	}	622	}
691		623
		624	#if 0 // unused, but seems interesting
692	/* reduces disease progression: reduce_symptoms	625	/* reduces disease progression: reduce_symptoms
693	* return true if we actually reduce a disease.	626	* return true if we actually reduce a disease.
694	*/	627	*/
695		628	static int
696	int
697	reduce_symptoms (object *sufferer, int reduction)	629	reduce_symptoms (object *sufferer, int reduction)
698	{	630	{
699	object *walk;	631	object *walk;
700	int success = 0;	632	int success = 0;
701		633
…		…
704	if (walk->type == SYMPTOM)	636	if (walk->type == SYMPTOM)
705	{	637	{
706	if (walk->value > 0)	638	if (walk->value > 0)
707	{	639	{
708	success = 1;	640	success = 1;
709	walk->value = MAX (0, walk->value - 2 * reduction);	641	walk->value = max (0, walk->value - 2 * reduction);
710	/* give the disease time to modify this symptom,	642	/* give the disease time to modify this symptom,
711	* and reduce its severity. */	643	* and reduce its severity. */
712	walk->speed_left = 0;	644	walk->speed_left = 0;
713	}	645	}
714	}	646	}
715	}	647	}
		648
716	if (success)	649	if (success)
717	new_draw_info (NDI_UNIQUE, 0, sufferer, "Your illness seems less severe.");	650	new_draw_info (NDI_UNIQUE, 0, sufferer, "Your illness seems less severe.");
		651
718	return success;	652	return success;
719	}	653	}
		654	#endif

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing deliantra/server/server/disease.C (file contents): Revision 1.7 by root, Thu Oct 5 16:50:07 2006 UTC vs. Revision 1.68 by root, Sun May 1 16:58:17 2011 UTC

Diff Legend

Comparing deliantra/server/server/disease.C (file contents):
Revision 1.7 by root, Thu Oct 5 16:50:07 2006 UTC vs.
Revision 1.68 by root, Sun May 1 16:58:17 2011 UTC