[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 1.73 by root, Sun Jan 29 02:47:05 2017 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 (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 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
36	other_arch Creation object created and dropped when symptom moved.	36	other_arch Creation object created and dropped when symptom moved.
37	title Message When the "disease" "infects" something, it will	37	title Message When the "disease" "infects" something, it will
38	print "title victim!!!" to the player who owns	38	print "title victim!!!" to the player who owns
39	the "disease".	39	the "disease".
40	wc+ Infectiousness How well the plague spreads person-to-person	40	wc+ Infectiousness How well the plague spreads person-to-person
41	magic+ Range range of infection	41	magic+ Range range of infection
42	Stats* Disability What stats are reduced by the disease (str con...)	42	Stats* Disability What stats are reduced by the disease (str con...)
43	maxhp+ Persistence How long the disease can last OUTSIDE the host.	43	maxhp+ Persistence How long the disease can last OUTSIDE the host.
44	value TimeLeft Counter for persistence	44	value TimeLeft Counter for persistence
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
56	when it runs out	56	when it runs out
57		57
58	exp experience experience awarded when plague cured	58	exp experience experience awarded when plague cured
59	hp*^ ReduceRegen reduces regeneration of disease-bearer	59	hp*^ ReduceRegen reduces regeneration of disease-bearer
60	sp*^ ReduceSpRegen reduces spellpoint regeneration	60	sp*^ ReduceSpRegen reduces spellpoint regeneration
61		61
62	name Name Name of the plague	62	name Name Name of the plague
63	msg message What the plague says when it strikes.	63	msg message What the plague says when it strikes.
64	race those affected species/race the plague strikes (* = everything)	64	race those affected species/race the plague strikes (* = everything)
65	level Plague Level General description of the plague's deadliness	65	level Plague Level General description of the plague's deadliness
66	armour Attenuation reduction in wc per generation of disease.	66	armour Attenuation reduction in wc per generation of disease.
67	This builds in a self-limiting factor.	67	This builds in a self-limiting factor.
68
69		68
70	Explanations:	69	Explanations:
71	* means this # should be negative to cause adverse effect.	70	* means this # should be negative to cause adverse effect.
72	+ means that this effect is modulated in spells by ldur	71	+ means that this effect is modulated in spells by ldur
73	^ means that this effect is modulated in spells by ldam	72	^ means that this effect is modulated in spells by ldam
…		…
126		125
127		126
128	#include <global.h>	127	#include <global.h>
129	#include <object.h>	128	#include <object.h>
130	#include <living.h>	129	#include <living.h>
131	#ifndef __CEXTRACT__
132	# include <sproto.h>	130	#include <sproto.h>
133	#endif
134	#include <spells.h>	131	#include <spells.h>
135	#include <sounds.h>	132	#include <sounds.h>
136	#include <skills.h>	133	#include <skills.h>
137		134
138	/* IMPLEMENTATION NOTES	135	/* IMPLEMENTATION NOTES
139		136
140	Diseases may be contageous. They are objects which exist in a player's	137	Diseases may be contageous. They are objects which exist in a player's
141	inventory. They themselves do nothing, except modify Symptoms, or	138	inventory. They themselves do nothing, except modify Symptoms, or
142	spread to other live objects. Symptoms are what actually damage the player:	139	spread to other live objects. Symptoms are what actually damage the player:
143	these are their own object. */	140	these are their own object. */
144		141
145	/* check if victim is susceptible to disease. */	142	/* grants immunity to plagues we've seen before. */
146	static int	143	static int
147	is_susceptible_to_disease (object victim, object disease)	144	grant_immunity (object *disease)
148	{	145	{
149	if (!QUERY_FLAG (victim, FLAG_ALIVE))	146	object *immunity;
		147	object *walk;
		148
		149	/* Don't give immunity to this disease if last_heal is set. */
		150	if (disease->last_heal)
150	return 0;	151	return 0;
151		152
152	if (strstr (disease->race, "*") && !QUERY_FLAG (victim, FLAG_UNDEAD))	153	/* first, search for an immunity of the same name */
		154	for (walk = disease->env->inv; walk; walk = walk->below)
		155	if (disease->name == walk->name && walk->is_immunity ())
		156	{
		157	walk->level = disease->level;
		158	return 1; /* just update the existing immunity. */
		159	}
		160
		161	immunity = archetype::get (shstr_immunity);
		162
		163	immunity->name = disease->name;
		164	immunity->level = disease->level;
		165	immunity->move_block = 0;
		166
		167	insert_ob_in_ob (immunity, disease->env);
		168
153	return 1;	169	return 1;
		170	}
154		171
155	if ((disease->race == undead_name) && QUERY_FLAG (victim, FLAG_UNDEAD))	172	/* argument is a disease */
		173	static object *
		174	find_symptom (object *disease)
		175	{
		176	/* check the inventory for symptoms */
		177	for (object *walk = disease->env->inv; walk; walk = walk->below)
		178	if (walk->name == disease->name && walk->type == SYMPTOM)
156	return 1;	179	return walk;
157		180
158	if ((victim->race && strstr (disease->race, victim->race)) \|\| strstr (disease->race, victim->name))
159	return 1;
160
161	return 0;	181	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	}	182	}
208		183
209	/* remove any symptoms of disease	184	/* remove any symptoms of disease
210	* Modified by MSW 2003-03-28 do try to find all the symptom the	185	* 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	186	* player may have - I think through some odd interactoins with
212	* disease level and player level and whatnot, a player could get	187	* disease level and player level and whatnot, a player could get
213	* more than one symtpom to a disease.	188	* more than one symtpom to a disease.
214	*/	189	*/
215		190	static int
216	int
217	remove_symptoms (object *disease)	191	remove_symptoms (object *disease)
218	{	192	{
219	object symptom, victim = NULL;	193	object symptom, victim = NULL;
220		194
221	while ((symptom = find_symptom (disease)) != NULL)	195	while ((symptom = find_symptom (disease)) != NULL)
222	{	196	{
223	if (!victim)	197	if (!victim)
224	victim = symptom->env;	198	victim = symptom->env;
225	remove_ob (symptom);	199
226	free_object (symptom);	200	symptom->destroy ();
227	}	201	}
		202
228	if (victim)	203	if (victim)
229	fix_player (victim);	204	victim->update_stats ();
		205
230	return 0;	206	return 0;
231	}	207	}
232		208
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 */	209	/* searches around for more victims to infect */
		210	static int
		211	check_infection (object *disease)
		212	{
		213	int range = abs (disease->magic);
		214
		215	object *op = disease->outer_env_or_self ();
		216
		217	if (!op->is_on_map ())
		218	return 0;
		219
		220	dynbuf buf;
		221	unordered_mapwalk (buf, op, -range, -range, range, range)
		222	{
		223	mapspace &ms = m->at (nx, ny);
		224
		225	if (ms.flags () & P_IS_ALIVE)
		226	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		227	infect_object (tmp, disease, 0);
		228	}
		229
		230	return 1;
		231	}
		232
		233	/* check if victim is susceptible to disease. */
		234	static int
		235	is_susceptible_to_disease (object victim, object disease)
		236	{
		237	if (!victim->flag [FLAG_ALIVE])
		238	return 0;
		239
		240	if (victim->flag [FLAG_WIZ])
		241	return 0;
		242
		243	if (disease->race.contains ("*") && !victim->flag [FLAG_UNDEAD])
		244	return 1;
		245
		246	if ((disease->race == shstr_undead) && victim->flag [FLAG_UNDEAD])
		247	return 1;
		248
		249	if ((victim->race && disease->race.contains (victim->race)) \|\| disease->race.contains (victim->name))
		250	return 1;
		251
		252	return 0;
		253	}
		254
		255	/* this function monitors the symptoms caused by the disease (if any),
		256	causes symptoms, and modifies existing symptoms in the case of
		257	existing diseases. */
		258	static int
		259	do_symptoms (object *disease)
		260	{
		261	object *symptom;
		262	object *victim;
		263	object *tmp;
		264
		265	victim = disease->env;
		266
		267	if (!victim)
		268	return 0; /* no-one to inflict symptoms on */
		269
		270	/* This is a quick hack - for whatever reason, disease->env will point
		271	* back to disease, causing endless loops. Why this happens really needs
		272	* to be found, but this should at least prevent the infinite loops.
		273	*/
		274	//TODO: should no longer be the case, monitor, and remove
		275	if (victim == disease)
		276	{
		277	LOG (llevError \| logBacktrace, "%s: disease->env points to itself", disease->debug_desc ());
		278	return 0;
		279	}
		280
		281	symptom = find_symptom (disease);
		282	if (!symptom)
		283	{
		284	/* no symptom? need to generate one! */
		285
		286	/* first check and see if the carrier of the disease is immune. If so, no symptoms! */
		287	if (!is_susceptible_to_disease (victim, disease))
		288	return 0;
		289
		290	/* check for an actual immunity */
		291	/* do an immunity check */
		292	for (tmp = victim->head_ ()->inv; tmp; tmp = tmp->below)
		293	if (tmp->name == disease->name && tmp->is_immunity ()) /* possibly an immunity, or diseased */
		294	if (tmp->level >= disease->level)
		295	return 0; /* Immune! */
		296
		297	object *new_symptom = archetype::get (shstr_symptom);
		298
		299	/* Something special done with dam. We want diseases to be more
		300	* random in what they'll kill, so we'll make the damage they
		301	* do random, note, this has a weird effect with progressive diseases.
		302	*/
		303	if (disease->stats.dam)
		304	{
		305	int dam = disease->stats.dam;
		306
		307	/* reduce the damage, on average, 50%, and making things random. */
		308
		309	dam = random_roll (1, abs (dam), victim, PREFER_LOW);
		310	if (disease->stats.dam < 0)
		311	dam = -dam;
		312
		313	new_symptom->stats.dam = dam;
		314	}
		315
		316	new_symptom->stats.maxsp = disease->stats.maxsp;
		317	new_symptom->stats.food = new_symptom->stats.maxgrace;
		318
		319	new_symptom->name = new_symptom->name_pl = disease->name;
		320
		321	new_symptom->level = disease->level;
		322	new_symptom->value = 0;
		323
		324	new_symptom->set_speed (disease->speed);
		325
		326	for (int i = 0; i < NUM_STATS; ++i)
		327	new_symptom->stats.stat (i) = disease->stats.stat (i);
		328
		329	new_symptom->stats.sp = disease->stats.sp;
		330	new_symptom->stats.food = disease->last_eat;
		331	new_symptom->stats.maxsp = disease->stats.maxsp;
		332	new_symptom->last_sp = disease->last_sp;
		333	new_symptom->stats.exp = 0;
		334	new_symptom->stats.hp = disease->stats.hp;
		335	new_symptom->msg = disease->msg;
		336	new_symptom->attacktype = disease->attacktype;
		337	new_symptom->other_arch = disease->other_arch;
		338	new_symptom->skill = disease->skill;
		339
		340	new_symptom->move_block = 0;
		341
		342	victim->head_ ()->insert (new_symptom);
		343
		344	// set owner last, as insert clears owner
		345	new_symptom->set_owner (disease->owner);
		346
		347	return 1;
		348	}
		349
		350	/* now deal with progressing diseases: we increase the debility
		351	* caused by the symptoms.
		352	*/
		353	if (disease->stats.ac)
		354	{
		355	symptom->value = clamp (symptom->value + disease->stats.ac, 0, 100*100);
		356
		357	float scale = 1.f + symptom->value / 100.f;
		358
		359	/* now rescale all the debilities */
		360	for (int i = 0; i < NUM_STATS; ++i)
		361	symptom->stats.stat (i) = clamp (int (scale * disease->stats.stat (i)), -128, 127);
		362
		363	symptom->stats.dam = clamp (scale * disease->stats.dam , -1024, 1024);
		364	symptom->stats.food = clamp (scale * disease->last_eat , -1024, 1024);
		365	symptom->stats.maxsp = clamp (scale * disease->stats.maxsp, -1024, 1024);
		366	symptom->stats.sp = clamp (scale * disease->stats.sp , -1024, 1024);
		367	symptom->stats.hp = clamp (scale * disease->stats.hp , -1024, 1024);
		368	symptom->stats.exp = 0;
		369	symptom->last_sp = disease->last_sp ? clamp (disease->last_sp / scale, 1, 1024) : 0;
		370	symptom->msg = disease->msg;
		371	symptom->attacktype = disease->attacktype;
		372	symptom->other_arch = disease->other_arch;
		373	}
		374
		375	symptom->set_flag (FLAG_APPLIED);
		376	victim->update_stats ();
		377
		378	return 1;
		379	}
		380
247	int	381	int
248	check_infection (object *disease)	382	move_disease (object *disease)
249	{	383	{
250	int x, y, range, mflags;	384	/* First task is to determine if the disease is inside or outside of someone.
251	maptile map, map2;	385	* If outside, we decrement 'value' until we're gone.
252	object *tmp;	386	*/
253		387
254	range = abs (disease->magic);
255
256	if (disease->env)	388	if (!disease->env)
257	{	389	{ /* we're outside of someone */
258	x = disease->env->x;	390	if (disease->stats.maxhp > 0)
259	y = disease->env->y;	391	disease->value--;
260	map = disease->env->map;	392
		393	if (!disease->value)
		394	{
		395	disease->destroy ();
		396	return 1;
		397	}
261	}	398	}
262	else	399	else
263	{	400	{
264	x = disease->x;	401	/* if we're inside a person, have the disease run its course */
265	y = disease->y;	402	/* negative/zero food denotes "perpetual" diseases. */
266	map = disease->map;	403	if (disease->stats.food > 0)
267	}	404	{
		405	disease->stats.food--;
268		406
269	if (!map)	407	if (!disease->stats.food)
		408	{
		409	remove_symptoms (disease); /* remove the symptoms of this disease */
		410	grant_immunity (disease);
		411	disease->destroy ();
		412	return 1;
		413	}
		414	}
		415	}
		416
		417	/* check to see if we infect others */
		418	check_infection (disease);
		419
		420	/* impose or modify the symptoms of the disease */
		421	if (disease->env && is_susceptible_to_disease (disease->env, disease))
		422	do_symptoms (disease);
		423
270	return 0;	424	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	}	425	}
285
286		426
287	/* check to see if an object is infectable:	427	/* check to see if an object is infectable:
288	* objects with immunity aren't infectable.	428	* objects with immunity aren't infectable.
289	* objects already infected aren't infectable.	429	* objects already infected aren't infectable.
290	* dead objects aren't infectable.	430	* dead objects aren't infectable.
…		…
295	{	435	{
296	object *tmp;	436	object *tmp;
297	object *new_disease;	437	object *new_disease;
298		438
299	/* don't infect inanimate objects */	439	/* don't infect inanimate objects */
300	if (!QUERY_FLAG (victim, FLAG_MONSTER) && !(victim->type == PLAYER))	440	if (!victim->flag [FLAG_MONSTER] && !(victim->type == PLAYER))
301	return 0;	441	return 0;
302		442
303	/* check and see if victim can catch disease: diseases	443	/* check and see if victim can catch disease: diseases
304	* are specific	444	* are specific
305	*/	445	*/
306	if (!is_susceptible_to_disease (victim, disease))	446	if (!is_susceptible_to_disease (victim, disease))
307	return 0;	447	return 0;
308		448
309	/* roll the dice on infection before doing the inventory check! */	449	/* roll the dice on infection before doing the inventory check! */
310	if (!force && (random_roll (0, 126, victim, PREFER_HIGH) >= disease->stats.wc))	450	if (!force && (random_roll (0, 126, victim, PREFER_HIGH) >= disease->stats.wc))
311	return 0;	451	return 0;
312		452
313	/* do an immunity check */	453	/* do an immunity check */
314	if (victim->head)
315	tmp = victim->head->inv;
316	else
317	tmp = victim->inv;
318		454
319	/* There used to (IMO) be a flaw in the below - it used to be the case	455	/* 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	456	* 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	457	* 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	458	* (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	459	* they were cast in that same order. Instead, change it so that
324	* if you diseased, you can't get diseased more.	460	* if you diseased, you can't get diseased more.
325	*/	461	*/
326		462
327	for ( /* tmp initialized in if, above */ ; tmp; tmp = tmp->below)	463	for (tmp = victim->head_ ()->inv; tmp; tmp = tmp->below)
328	{	464	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! /	465	return 0; /* Immune! */
331	else if (tmp->type == DISEASE && !strcmp (tmp->name, disease->name))	466	else if (tmp->type == DISEASE && tmp->name == disease->name)
332	return 0; /* already diseased */	467	return 0; /* already diseased */
333	}
334		468
335	/* If we've gotten this far, go ahead and infect the victim. */	469	/* If we've gotten this far, go ahead and infect the victim. */
336	new_disease = get_object ();	470
337	copy_object (disease, new_disease);	471	new_disease = disease->clone ();
		472
338	new_disease->stats.food = disease->stats.maxgrace;	473	new_disease->stats.food = disease->stats.maxgrace;
339	new_disease->value = disease->stats.maxhp;	474	new_disease->value = disease->stats.maxhp;
340	new_disease->stats.wc -= disease->last_grace; /* self-limiting factor */	475	new_disease->stats.wc -= disease->last_grace; /* self-limiting factor */
341		476
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'	477	/* This appears to be a horrible case of overloading 'NO_PASS'
370	* for meaning in the diseases.	478	* for meaning in the diseases.
371	*/	479	*/
372	new_disease->move_block = 0;	480	new_disease->move_block = 0;
		481
		482	// insert before setting the owner
		483	victim->head_ ()->insert (new_disease);
		484
		485	if (disease->owner)
		486	new_disease->set_owner (disease->owner);
		487	else if (object *pl = disease->in_player ())
		488	/* for diseases which are passed by hitting, set owner and skill */
		489	new_disease->set_owner (pl);
		490
		491	if (INVOKE_OBJECT (INFECT, victim, ARG_OBJECT (disease), ARG_OBJECT (new_disease)))
		492	return 1;
		493
373	if (new_disease->owner && new_disease->owner->type == PLAYER)	494	if (new_disease->owner && new_disease->owner->type == PLAYER)
374	{	495	{
375	char buf[128];	496	const char *buf;
376		497
377	/* if the disease has a title, it has a special infection message	498	/* if the disease has a title, it has a special infection message
378	* This messages is printed in the form MESSAGE victim	499	* This messages is printed in the form MESSAGE victim
379	*/	500	*/
380	if (new_disease->title)	501	if (new_disease->title)
381	sprintf (buf, "%s %s!!", &disease->title, &victim->name);	502	buf = format ("%s %s!!", &disease->title, &victim->name);
382	else	503	else
383	sprintf (buf, "You infect %s with your disease, %s!", &victim->name, &new_disease->name);	504	buf = format ("You infect %s with your disease, %s!", &victim->name, &new_disease->name);
384		505
385	if (victim->type == PLAYER)	506	if (victim->type == PLAYER)
386	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, new_disease->owner, buf);	507	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, new_disease->owner, buf);
387	else	508	else
388	new_draw_info (0, 4, new_disease->owner, buf);	509	new_draw_info (0, 4, new_disease->owner, buf);
389	}	510	}
		511
390	if (victim->type == PLAYER)	512	if (victim->type == PLAYER)
391	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, "You suddenly feel ill.");	513	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, "You suddenly feel ill.");
392		514
393	return 1;	515	return 1;
394
395	}	516	}
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		517
562	/* make the symptom do the nasty things it does */	518	/* make the symptom do the nasty things it does */
563
564	int	519	int
565	move_symptom (object *symptom)	520	move_symptom (object *symptom)
566	{	521	{
567	object *victim = symptom->env;	522	object *victim = symptom->env;
568	object *new_ob;
569	int sp_reduce;
570		523
571	if (victim == NULL \|\| victim->map == NULL)	524	if (!victim \|\| !victim->map)
572	{ /* outside a monster/player, die immediately */	525	{ /* outside a monster/player, die immediately */
573	remove_ob (symptom);	526	symptom->destroy ();
574	free_object (symptom);
575	return 0;	527	return 0;
576	}	528	}
577		529
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
589	/* create the symptom "other arch" object and drop it here	530	/* create the symptom "other arch" object and drop it here
590	* under every part of the monster	531	* under every part of the monster
591	* The victim may well have died.	532	* The victim may well have died.
592	*/	533	*/
593
594	if (victim->map == NULL)	534	if (victim->map)
595	return 0;	535	{
		536	victim->play_sound (symptom->sound);
		537
596	if (symptom->other_arch)	538	if (symptom->other_arch)
597	{	539	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	{	540	{
605	new_ob = arch_to_object (symptom->other_arch);	541	object *new_ob = symptom->other_arch->instance ();
606	new_ob->x = tmp->x;	542	new_ob->x = tmp->x;
607	new_ob->y = tmp->y;	543	new_ob->y = tmp->y;
608	new_ob->map = victim->map;	544	new_ob->map = victim->map;
609	insert_ob_in_map (new_ob, victim->map, victim, 0);	545	insert_ob_in_map (new_ob, victim->map, victim, 0);
610	}	546	}
611	}	547	}
		548
		549	int damage =
		550	symptom->stats.dam > 0
		551	? symptom->stats.dam
		552	: max (1, victim->stats.maxhp * -symptom->stats.dam / 100);
		553
		554	hit_player (victim, damage, symptom, symptom->attacktype, 1);
		555
		556	int sp_reduce =
		557	symptom->stats.maxsp > 0
		558	? symptom->stats.maxsp
		559	: max (1, victim->stats.maxsp * -symptom->stats.maxsp / 100);
		560
		561	victim->stats.sp = max (0, victim->stats.sp - sp_reduce);
		562
612	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, symptom->msg);	563	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, symptom->msg);
613		564
614	return 1;	565	return 1;
615	}	566	}
616		567
617
618	/* possibly infect due to direct physical contact	568	/* possibly infect due to direct physical contact
619	i.e., AT_PHYSICAL-- called from "hit_player_attacktype" */	569	* i.e., AT_PHYSICAL-- called from "hit_player_attacktype" */
620
621	int	570	int
622	check_physically_infect (object victim, object hitter)	571	check_physically_infect (object victim, object hitter)
623	{	572	{
624	object *walk;
625
626	/* search for diseases, give every disease a chance to infect */	573	/* search for diseases, give every disease a chance to infect */
627	for (walk = hitter->inv; walk != NULL; walk = walk->below)	574	for (object *disease = hitter->inv; disease; disease = disease->below)
628	if (walk->type == DISEASE)	575	if (disease->type == DISEASE)
629	infect_object (victim, walk, 0);	576	infect_object (victim, disease, 0);
		577
630	return 1;	578	return 1;
631	}	579	}
632		580
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" */	581	/* do the cure disease stuff, from the spell "cure disease" */
646
647	int	582	int
648	cure_disease (object sufferer, object caster)	583	cure_disease (object sufferer, object caster, object *spell)
649	{	584	{
650	object disease, next;	585	object disease, next;
651	int casting_level;
652	int cure = 0;	586	int cure = 0;
653		587
654	if (caster)
655	casting_level = caster->level;
656	else
657	casting_level = 1000; /* if null caster, CURE all. */	588	int casting_level = caster ? caster->level : 1000; /* if null caster, CURE all. */
658		589
659	for (disease = sufferer->inv; disease; disease = next)	590	for (disease = sufferer->inv; disease; disease = next)
660	{	591	{
661	next = disease->below;	592	next = disease->below;
662		593
663	if (disease->type == DISEASE)	594	if (disease->type == DISEASE)
664	{ /* attempt to cure this disease */	595	{ /* attempt to cure this disease */
665	/* If caster lvel is higher than disease level, cure chance	596	/* If caster level is higher than disease level, cure chance
666	* is automatic. If lower, then the chance is basically	597	* is automatic. If lower, then the chance is basically
667	* 1 in level_diff - if there is a 5 level difference, chance	598	* 1 in level_diff - if there is a 5 level difference, chance
668	* is 1 in 5.	599	* is 1 in 5.
669	*/	600	*/
670	if ((casting_level >= disease->level) \|\| (!(random_roll (0, (disease->level - casting_level - 1), caster, PREFER_LOW))))	601	if ((casting_level >= disease->level) \|\| (!(random_roll (0, (disease->level - casting_level - 1), caster, PREFER_LOW))))
671	{	602	{
672
673	remove_symptoms (disease);	603	remove_symptoms (disease);
674	remove_ob (disease);
675	cure = 1;	604	cure = 1;
		605
676	if (caster)	606	if (caster && spell)
677	change_exp (caster, disease->stats.exp, caster->chosen_skill ? &caster->chosen_skill->skill : (const char *) 0, 0);	607	change_exp (caster, disease->stats.exp, spell->skill, SK_EXP_SKILL_ONLY);
678	free_object (disease);	608
		609	disease->destroy ();
679	}	610	}
680	}	611	}
681	}	612	}
		613
682	if (cure)	614	if (cure)
683	{	615	{
684	/* Only draw these messages once */	616	/* Only draw these messages once */
685	if (caster)	617	if (caster)
686	new_draw_info_format (NDI_UNIQUE, 0, caster, "You cure a disease!");	618	new_draw_info_format (NDI_UNIQUE, 0, caster, "You cure a disease!");
		619
687	new_draw_info (NDI_UNIQUE, 0, sufferer, "You no longer feel diseased.");	620	new_draw_info (NDI_UNIQUE, 0, sufferer, "You no longer feel diseased.");
688	}	621	}
		622
689	return 1;	623	return 1;
690	}	624	}
691		625
		626	#if 0 // unused, but seems interesting
692	/* reduces disease progression: reduce_symptoms	627	/* reduces disease progression: reduce_symptoms
693	* return true if we actually reduce a disease.	628	* return true if we actually reduce a disease.
694	*/	629	*/
695		630	static int
696	int
697	reduce_symptoms (object *sufferer, int reduction)	631	reduce_symptoms (object *sufferer, int reduction)
698	{	632	{
699	object *walk;	633	object *walk;
700	int success = 0;	634	int success = 0;
701		635
…		…
704	if (walk->type == SYMPTOM)	638	if (walk->type == SYMPTOM)
705	{	639	{
706	if (walk->value > 0)	640	if (walk->value > 0)
707	{	641	{
708	success = 1;	642	success = 1;
709	walk->value = MAX (0, walk->value - 2 * reduction);	643	walk->value = max (0, walk->value - 2 * reduction);
710	/* give the disease time to modify this symptom,	644	/* give the disease time to modify this symptom,
711	* and reduce its severity. */	645	* and reduce its severity. */
712	walk->speed_left = 0;	646	walk->speed_left = 0;
713	}	647	}
714	}	648	}
715	}	649	}
		650
716	if (success)	651	if (success)
717	new_draw_info (NDI_UNIQUE, 0, sufferer, "Your illness seems less severe.");	652	new_draw_info (NDI_UNIQUE, 0, sufferer, "Your illness seems less severe.");
		653
718	return success;	654	return success;
719	}	655	}
		656	#endif

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Comparing deliantra/server/server/disease.C (file contents): Revision 1.7 by root, Thu Oct 5 16:50:07 2006 UTC vs. Revision 1.73 by root, Sun Jan 29 02:47:05 2017 UTC

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Comparing deliantra/server/server/disease.C (file contents):
Revision 1.7 by root, Thu Oct 5 16:50:07 2006 UTC vs.
Revision 1.73 by root, Sun Jan 29 02:47:05 2017 UTC