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

Comparing deliantra/server/server/disease.C (file contents):
Revision 1.27 by root, Sun Jul 1 05:00:19 2007 UTC vs.
Revision 1.73 by root, Sun Jan 29 02:47:05 2017 UTC

…		…
1	/*	1	/*
2	* This file is part of Crossfire TRT, the Roguelike Realtime MORPG.	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*	3	*
4	* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team	4	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2002 Mark Wedel & Crossfire Development Team
6	* Copyright (©) 1992,2007 Frank Tore Johansen	6	* Copyright (©) 1992 Frank Tore Johansen
7	*	7	*
8	* Crossfire TRT is free software: you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify it under
9	* 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
10	* the Free Software Foundation, either version 3 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
11	* (at your option) any later version.	11	* option) any later version.
12	*	12	*
13	* 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,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	* GNU General Public License for more details.	16	* GNU General Public License for more details.
17	*	17	*
18	* 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
19	* along with this program. If not, see <http://www.gnu.org/licenses/>.	19	* and the GNU General Public License along with this program. If not, see
		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
35	other_arch Creation object created and dropped when symptom moved.	36	other_arch Creation object created and dropped when symptom moved.
36	title Message When the "disease" "infects" something, it will	37	title Message When the "disease" "infects" something, it will
37	print "title victim!!!" to the player who owns	38	print "title victim!!!" to the player who owns
38	the "disease".	39	the "disease".
39	wc+ Infectiousness How well the plague spreads person-to-person	40	wc+ Infectiousness How well the plague spreads person-to-person
40	magic+ Range range of infection	41	magic+ Range range of infection
41	Stats* Disability What stats are reduced by the disease (str con...)	42	Stats* Disability What stats are reduced by the disease (str con...)
42	maxhp+ Persistence How long the disease can last OUTSIDE the host.	43	maxhp+ Persistence How long the disease can last OUTSIDE the host.
43	value TimeLeft Counter for persistence	44	value TimeLeft Counter for persistence
44	dam^ Damage How much damage it does (%?).	45	dam^ Damage How much damage it does (%?).
45	maxgrace+ Duration How long before the disease is naturally cured.	46	maxgrace+ Duration How long before the disease is naturally cured.
46	food DurCount Counter for Duration	47	food DurCount Counter for Duration
47		48
48	speed Speed How often the disease moves.	49	speed Speed How often the disease moves.
49	last_sp^ Lethargy Percentage of max speed--10 = 10% speed.	50	last_sp^ Lethargy Percentage of max speed. 10 = 10% speed.
50		51
51	maxsp^ Mana deplete Saps mana.	52	maxsp^ Mana deplete Saps mana.
52	ac^ Progressiveness How the diseases increases in severity.	53	ac^ Progressiveness How the diseases increases in severity.
53	last_eat*^ Deplete food saps food if negative	54	last_eat*^ Deplete food saps food if negative
54	last_heal GrantImmunity If nonzero, disease does NOT grant immunity	55	last_heal GrantImmunity If nonzero, disease does NOT grant immunity
55	when it runs out	56	when it runs out
56		57
57	exp experience experience awarded when plague cured	58	exp experience experience awarded when plague cured
58	hp*^ ReduceRegen reduces regeneration of disease-bearer	59	hp*^ ReduceRegen reduces regeneration of disease-bearer
59	sp*^ ReduceSpRegen reduces spellpoint regeneration	60	sp*^ ReduceSpRegen reduces spellpoint regeneration
60		61
61	name Name Name of the plague	62	name Name Name of the plague
62	msg message What the plague says when it strikes.	63	msg message What the plague says when it strikes.
63	race those affected species/race the plague strikes (* = everything)	64	race those affected species/race the plague strikes (* = everything)
64	level Plague Level General description of the plague's deadliness	65	level Plague Level General description of the plague's deadliness
65	armour Attenuation reduction in wc per generation of disease.	66	armour Attenuation reduction in wc per generation of disease.
66	This builds in a self-limiting factor.	67	This builds in a self-limiting factor.
67
68		68
69	Explanations:	69	Explanations:
70	* means this # should be negative to cause adverse effect.	70	* means this # should be negative to cause adverse effect.
71	+ means that this effect is modulated in spells by ldur	71	+ means that this effect is modulated in spells by ldur
72	^ means that this effect is modulated in spells by ldam	72	^ means that this effect is modulated in spells by ldam
…		…
130	#include <sproto.h>	130	#include <sproto.h>
131	#include <spells.h>	131	#include <spells.h>
132	#include <sounds.h>	132	#include <sounds.h>
133	#include <skills.h>	133	#include <skills.h>
134		134
135	/* IMPLEMENTATION NOTES	135	/* IMPLEMENTATION NOTES
136		136
137	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
138	inventory. They themselves do nothing, except modify Symptoms, or	138	inventory. They themselves do nothing, except modify Symptoms, or
139	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:
140	these are their own object. */	140	these are their own object. */
		141
		142	/* grants immunity to plagues we've seen before. */
		143	static int
		144	grant_immunity (object *disease)
		145	{
		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)
		151	return 0;
		152
		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
		169	return 1;
		170	}
		171
		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)
		179	return walk;
		180
		181	return NULL;
		182	}
		183
		184	/* remove any symptoms of disease
		185	* Modified by MSW 2003-03-28 do try to find all the symptom the
		186	* player may have - I think through some odd interactoins with
		187	* disease level and player level and whatnot, a player could get
		188	* more than one symtpom to a disease.
		189	*/
		190	static int
		191	remove_symptoms (object *disease)
		192	{
		193	object symptom, victim = NULL;
		194
		195	while ((symptom = find_symptom (disease)) != NULL)
		196	{
		197	if (!victim)
		198	victim = symptom->env;
		199
		200	symptom->destroy ();
		201	}
		202
		203	if (victim)
		204	victim->update_stats ();
		205
		206	return 0;
		207	}
		208
		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	}
141		232
142	/* check if victim is susceptible to disease. */	233	/* check if victim is susceptible to disease. */
143	static int	234	static int
144	is_susceptible_to_disease (object victim, object disease)	235	is_susceptible_to_disease (object victim, object disease)
145	{	236	{
146	if (!QUERY_FLAG (victim, FLAG_ALIVE))	237	if (!victim->flag [FLAG_ALIVE])
147	return 0;	238	return 0;
148		239
149	if (strstr (disease->race, "*") && !QUERY_FLAG (victim, FLAG_UNDEAD))	240	if (victim->flag [FLAG_WIZ])
		241	return 0;
		242
		243	if (disease->race.contains ("*") && !victim->flag [FLAG_UNDEAD])
150	return 1;	244	return 1;
151		245
152	if ((disease->race == undead_name) && QUERY_FLAG (victim, FLAG_UNDEAD))	246	if ((disease->race == shstr_undead) && victim->flag [FLAG_UNDEAD])
153	return 1;	247	return 1;
154		248
155	if ((victim->race && strstr (disease->race, victim->race)) \|\| strstr (disease->race, victim->name))	249	if ((victim->race && disease->race.contains (victim->race)) \|\| disease->race.contains (victim->name))
156	return 1;	250	return 1;
157		251
158	return 0;	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;
159	}	379	}
160		380
161	int	381	int
162	move_disease (object *disease)	382	move_disease (object *disease)
163	{	383	{
164	/* first task is to determine if the disease is inside or outside of someone.	384	/* First task is to determine if the disease is inside or outside of someone.
165	* If outside, we decrement 'value' until we're gone.	385	* If outside, we decrement 'value' until we're gone.
166	*/	386	*/
167		387
168	if (disease->env == NULL)	388	if (!disease->env)
169	{ /* we're outside of someone */	389	{ /* we're outside of someone */
170	if (disease->stats.maxhp > 0)	390	if (disease->stats.maxhp > 0)
171	disease->value--;	391	disease->value--;
172		392
173	if (disease->value == 0)	393	if (!disease->value)
174	{	394	{
175	disease->destroy ();	395	disease->destroy ();
176	return 1;	396	return 1;
177	}	397	}
178	}	398	}
179	else	399	else
180	{	400	{
181	/* if we're inside a person, have the disease run its course */	401	/* if we're inside a person, have the disease run its course */
182	/* negative foods denote "perpetual" diseases. */	402	/* negative/zero food denotes "perpetual" diseases. */
183	if (disease->stats.food > 0)	403	if (disease->stats.food > 0)
184	{	404	{
185	disease->stats.food--;	405	disease->stats.food--;
186		406
187	if (disease->stats.food == 0)	407	if (!disease->stats.food)
188	{	408	{
189	remove_symptoms (disease); /* remove the symptoms of this disease */	409	remove_symptoms (disease); /* remove the symptoms of this disease */
190	grant_immunity (disease);	410	grant_immunity (disease);
191	disease->destroy ();	411	disease->destroy ();
192	return 1;	412	return 1;
…		…
201	if (disease->env && is_susceptible_to_disease (disease->env, disease))	421	if (disease->env && is_susceptible_to_disease (disease->env, disease))
202	do_symptoms (disease);	422	do_symptoms (disease);
203		423
204	return 0;	424	return 0;
205	}	425	}
206
207	/* remove any symptoms of disease
208	* Modified by MSW 2003-03-28 do try to find all the symptom the
209	* player may have - I think through some odd interactoins with
210	* disease level and player level and whatnot, a player could get
211	* more than one symtpom to a disease.
212	*/
213
214	int
215	remove_symptoms (object *disease)
216	{
217	object symptom, victim = NULL;
218
219	while ((symptom = find_symptom (disease)) != NULL)
220	{
221	if (!victim)
222	victim = symptom->env;
223
224	symptom->destroy ();
225	}
226
227	if (victim)
228	victim->update_stats ();
229	return 0;
230	}
231
232	/* argument is a disease */
233	object *
234	find_symptom (object *disease)
235	{
236	object *walk;
237
238	/* check the inventory for symptoms */
239	for (walk = disease->env->inv; walk; walk = walk->below)
240	if (walk->name == disease->name && walk->type == SYMPTOM)
241	return walk;
242	return NULL;
243	}
244
245	/* searches around for more victims to infect */
246	int
247	check_infection (object *disease)
248	{
249	int x, y, range, mflags;
250	maptile map, map2;
251	object *tmp;
252
253	range = abs (disease->magic);
254
255	if (disease->env)
256	{
257	x = disease->env->x;
258	y = disease->env->y;
259	map = disease->env->map;
260	}
261	else
262	{
263	x = disease->x;
264	y = disease->y;
265	map = disease->map;
266	}
267
268	if (!map)
269	return 0;
270
271	for (int i = x - range; i <= x + range; i++)
272	for (int j = y - range; j <= y + range; j++)
273	{
274	sint16 i2, j2;
275	mflags = get_map_flags (map, &map2, i, j, &i2, &j2);
276
277	if (!(mflags & P_OUT_OF_MAP) && (mflags & P_IS_ALIVE))
278	for (tmp = GET_MAP_OB (map2, i2, j2); tmp; tmp = tmp->above)
279	infect_object (tmp, disease, 0);
280	}
281
282	return 1;
283	}
284
285		426
286	/* check to see if an object is infectable:	427	/* check to see if an object is infectable:
287	* objects with immunity aren't infectable.	428	* objects with immunity aren't infectable.
288	* objects already infected aren't infectable.	429	* objects already infected aren't infectable.
289	* dead objects aren't infectable.	430	* dead objects aren't infectable.
…		…
294	{	435	{
295	object *tmp;	436	object *tmp;
296	object *new_disease;	437	object *new_disease;
297		438
298	/* don't infect inanimate objects */	439	/* don't infect inanimate objects */
299	if (!QUERY_FLAG (victim, FLAG_MONSTER) && !(victim->type == PLAYER))	440	if (!victim->flag [FLAG_MONSTER] && !(victim->type == PLAYER))
300	return 0;	441	return 0;
301		442
302	/* check and see if victim can catch disease: diseases	443	/* check and see if victim can catch disease: diseases
303	* are specific	444	* are specific
304	*/	445	*/
305	if (!is_susceptible_to_disease (victim, disease))	446	if (!is_susceptible_to_disease (victim, disease))
306	return 0;	447	return 0;
307		448
308	/* roll the dice on infection before doing the inventory check! */	449	/* roll the dice on infection before doing the inventory check! */
309	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))
310	return 0;	451	return 0;
311		452
312	/* do an immunity check */	453	/* do an immunity check */
313	if (victim->head)
314	tmp = victim->head->inv;
315	else
316	tmp = victim->inv;
317		454
318	/* 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
319	* 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
320	* result in a person with multiple afflictions of the same disease	457	* result in a person with multiple afflictions of the same disease
321	* (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
322	* 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
323	* if you diseased, you can't get diseased more.	460	* if you diseased, you can't get diseased more.
324	*/	461	*/
325		462
326	for ( /* tmp initialised in if, above */ ; tmp; tmp = tmp->below)	463	for (tmp = victim->head_ ()->inv; tmp; tmp = tmp->below)
327	{	464	if (tmp->name == disease->name && tmp->is_immunity () && tmp->level >= disease->level)
328	if (tmp->type == SIGN && tmp->name == disease->name && tmp->level >= disease->level)
329	return 0; /* Immune! */	465	return 0; /* Immune! */
330	else if (tmp->type == DISEASE && tmp->name == disease->name)	466	else if (tmp->type == DISEASE && tmp->name == disease->name)
331	return 0; /* already diseased */	467	return 0; /* already diseased */
332	}
333		468
334	/* 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. */
		470
335	new_disease = disease->clone ();	471	new_disease = disease->clone ();
		472
336	new_disease->stats.food = disease->stats.maxgrace;	473	new_disease->stats.food = disease->stats.maxgrace;
337	new_disease->value = disease->stats.maxhp;	474	new_disease->value = disease->stats.maxhp;
338	new_disease->stats.wc -= disease->last_grace; /* self-limiting factor */	475	new_disease->stats.wc -= disease->last_grace; /* self-limiting factor */
339		476
340	/* Unfortunately, set_owner does the wrong thing to the skills pointers
341	* resulting in exp going into the owners current chosen skill.
342	*/
343
344	if (disease->owner)
345	{
346	new_disease->set_owner (disease->owner);
347
348	/* Only need to update skill if different */
349	if (new_disease->skill != disease->skill)
350	new_disease->skill = disease->skill;
351	}
352	else
353	{ /* for diseases which are passed by hitting, set owner and praying skill */
354	if (disease->env && disease->env->type == PLAYER)
355	{
356	object *player = disease->env;
357
358	new_disease->set_owner (player);
359
360	/* the skill pointer for these diseases should already be set up -
361	* hardcoding in 'praying' is not the right approach.
362	*/
363	}
364	}
365
366	insert_ob_in_ob (new_disease, victim->head_ ());
367	/* This appears to be a horrible case of overloading 'NO_PASS'	477	/* This appears to be a horrible case of overloading 'NO_PASS'
368	* for meaning in the diseases.	478	* for meaning in the diseases.
369	*/	479	*/
370	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
371	if (new_disease->owner && new_disease->owner->type == PLAYER)	494	if (new_disease->owner && new_disease->owner->type == PLAYER)
372	{	495	{
373	char buf[128];	496	const char *buf;
374		497
375	/* 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
376	* This messages is printed in the form MESSAGE victim	499	* This messages is printed in the form MESSAGE victim
377	*/	500	*/
378	if (new_disease->title)	501	if (new_disease->title)
379	sprintf (buf, "%s %s!!", &disease->title, &victim->name);	502	buf = format ("%s %s!!", &disease->title, &victim->name);
380	else	503	else
381	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);
382		505
383	if (victim->type == PLAYER)	506	if (victim->type == PLAYER)
384	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);
385	else	508	else
386	new_draw_info (0, 4, new_disease->owner, buf);	509	new_draw_info (0, 4, new_disease->owner, buf);
387	}	510	}
		511
388	if (victim->type == PLAYER)	512	if (victim->type == PLAYER)
389	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.");
390		514
391	return 1;	515	return 1;
392
393	}	516	}
394
395
396
397	/* this function monitors the symptoms caused by the disease (if any),
398	causes symptoms, and modifies existing symptoms in the case of
399	existing diseases. */
400
401	int
402	do_symptoms (object *disease)
403	{
404	object *symptom;
405	object *victim;
406	object *tmp;
407
408	victim = disease->env;
409
410	/* This is a quick hack - for whatever reason, disease->env will point
411	* back to disease, causing endless loops. Why this happens really needs
412	* to be found, but this should at least prevent the infinite loops.
413	*/
414
415	if (victim == NULL \|\| victim == disease)
416	return 0; /* no-one to inflict symptoms on */
417
418	symptom = find_symptom (disease);
419	if (symptom == NULL)
420	{
421	/* no symptom? need to generate one! */
422	object *new_symptom;
423
424	/* first check and see if the carrier of the disease is immune. If so, no symptoms! */
425	if (!is_susceptible_to_disease (victim, disease))
426	return 0;
427
428	/* check for an actual immunity */
429	/* do an immunity check */
430	if (victim->head)
431	tmp = victim->head->inv;
432	else
433	tmp = victim->inv;
434
435	for ( /* tmp initialised in if, above */ ; tmp; tmp = tmp->below)
436	{
437	if (tmp->type == SIGN) /* possibly an immunity, or diseased */
438	if (tmp->name == disease->name && tmp->level >= disease->level)
439	return 0; /Immune! /
440	}
441
442	new_symptom = get_archetype ("symptom");
443
444	/* Something special done with dam. We want diseases to be more
445	* random in what they'll kill, so we'll make the damage they
446	* do random, note, this has a weird effect with progressive diseases.
447	*/
448	if (disease->stats.dam != 0)
449	{
450	int dam = disease->stats.dam;
451
452	/* reduce the damage, on average, 50%, and making things random. */
453
454	dam = random_roll (1, abs (dam), victim, PREFER_LOW);
455	if (disease->stats.dam < 0)
456	dam = -dam;
457	new_symptom->stats.dam = dam;
458	}
459
460
461	new_symptom->stats.maxsp = disease->stats.maxsp;
462	new_symptom->stats.food = new_symptom->stats.maxgrace;
463
464	new_symptom->name = new_symptom->name_pl = disease->name;
465
466	new_symptom->level = disease->level;
467	new_symptom->speed = disease->speed;
468	new_symptom->value = 0;
469
470	for (int i = 0; i < NUM_STATS; ++i)
471	new_symptom->stats.stat (i) = disease->stats.stat (i);
472
473	new_symptom->stats.sp = disease->stats.sp;
474	new_symptom->stats.food = disease->last_eat;
475	new_symptom->stats.maxsp = disease->stats.maxsp;
476	new_symptom->last_sp = disease->last_sp;
477	new_symptom->stats.exp = 0;
478	new_symptom->stats.hp = disease->stats.hp;
479	new_symptom->msg = disease->msg;
480	new_symptom->attacktype = disease->attacktype;
481	new_symptom->other_arch = disease->other_arch;
482
483	new_symptom->set_owner (disease->owner);
484
485	if (new_symptom->skill != disease->skill)
486	new_symptom->skill = disease->skill;
487
488	new_symptom->move_block = 0;
489	insert_ob_in_ob (new_symptom, victim);
490	return 1;
491	}
492
493	/* now deal with progressing diseases: we increase the debility
494	* caused by the symptoms.
495	*/
496	if (disease->stats.ac != 0)
497	{
498	symptom->value += disease->stats.ac;
499
500	float scale = 1.f + symptom->value / 100.f;
501
502	/* now rescale all the debilities */
503	for (int i = 0; i < NUM_STATS; ++i)
504	symptom->stats.stat (i) = scale * disease->stats.stat (i);
505
506	symptom->stats.dam = scale * disease->stats.dam;
507	symptom->stats.sp = scale * disease->stats.sp;
508	symptom->stats.food = scale * disease->last_eat;
509	symptom->stats.maxsp = scale * disease->stats.maxsp;
510	symptom->last_sp = scale * disease->last_sp;
511	symptom->stats.exp = 0;
512	symptom->stats.hp = scale * disease->stats.hp;
513
514	symptom->msg = disease->msg;
515	symptom->attacktype = disease->attacktype;
516	symptom->other_arch = disease->other_arch;
517	}
518
519	SET_FLAG (symptom, FLAG_APPLIED);
520	victim->update_stats ();
521
522	return 1;
523	}
524
525	/* grants immunity to plagues we've seen before. */
526	int
527	grant_immunity (object *disease)
528	{
529	object *immunity;
530	object *walk;
531
532	/* Don't give immunity to this disease if last_heal is set. */
533	if (disease->last_heal)
534	return 0;
535	/* first, search for an immunity of the same name */
536	for (walk = disease->env->inv; walk; walk = walk->below)
537	{
538	if (walk->type == 98 && disease->name == walk->name)
539	{
540	walk->level = disease->level;
541	return 1; /* just update the existing immunity. */
542	}
543	}
544	immunity = get_archetype ("immunity");
545	immunity->name = disease->name;
546	immunity->level = disease->level;
547	immunity->move_block = 0;
548	insert_ob_in_ob (immunity, disease->env);
549	return 1;
550
551	}
552
553		517
554	/* make the symptom do the nasty things it does */	518	/* make the symptom do the nasty things it does */
555
556	int	519	int
557	move_symptom (object *symptom)	520	move_symptom (object *symptom)
558	{	521	{
559	object *victim = symptom->env;	522	object *victim = symptom->env;
560	object *new_ob;
561	int sp_reduce;
562		523
563	if (victim == NULL \|\| victim->map == NULL)	524	if (!victim \|\| !victim->map)
564	{ /* outside a monster/player, die immediately */	525	{ /* outside a monster/player, die immediately */
565	symptom->destroy ();	526	symptom->destroy ();
566	return 0;	527	return 0;
567	}	528	}
568		529
569	if (symptom->stats.dam > 0)
570	hit_player (victim, symptom->stats.dam, symptom, symptom->attacktype, 1);
571	else
572	hit_player (victim, (int) MAX (1, -victim->stats.maxhp * symptom->stats.dam / 100.0), symptom, symptom->attacktype, 1);
573
574	if (symptom->stats.maxsp > 0)
575	sp_reduce = symptom->stats.maxsp;
576	else
577	sp_reduce = (int) MAX (1, victim->stats.maxsp * symptom->stats.maxsp / 100.0);
578	victim->stats.sp = MAX (0, victim->stats.sp - sp_reduce);
579
580	/* create the symptom "other arch" object and drop it here	530	/* create the symptom "other arch" object and drop it here
581	* under every part of the monster	531	* under every part of the monster
582	* The victim may well have died.	532	* The victim may well have died.
583	*/	533	*/
584
585	if (victim->map == NULL)	534	if (victim->map)
586	return 0;	535	{
		536	victim->play_sound (symptom->sound);
		537
587	if (symptom->other_arch)	538	if (symptom->other_arch)
588	{	539	for (object *tmp = victim->head_ (); tmp; tmp = tmp->more)
589	object *tmp;
590
591	tmp = victim;
592	if (tmp->head != NULL)
593	tmp = tmp->head;
594	for ( /tmp initialised above / ; tmp != NULL; tmp = tmp->more)
595	{	540	{
596	new_ob = arch_to_object (symptom->other_arch);	541	object *new_ob = symptom->other_arch->instance ();
597	new_ob->x = tmp->x;	542	new_ob->x = tmp->x;
598	new_ob->y = tmp->y;	543	new_ob->y = tmp->y;
599	new_ob->map = victim->map;	544	new_ob->map = victim->map;
600	insert_ob_in_map (new_ob, victim->map, victim, 0);	545	insert_ob_in_map (new_ob, victim->map, victim, 0);
601	}	546	}
602	}	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
603	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, symptom->msg);	563	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, symptom->msg);
604		564
605	return 1;	565	return 1;
606	}	566	}
607		567
…		…
616	infect_object (victim, disease, 0);	576	infect_object (victim, disease, 0);
617		577
618	return 1;	578	return 1;
619	}	579	}
620		580
621	// find a disease in someone
622	object *
623	find_disease (object *victim)
624	{
625	for (object *disease = victim->inv; disease; disease = disease->below)
626	if (disease->type == DISEASE)
627	return disease;
628
629	return 0;
630	}
631
632	/* do the cure disease stuff, from the spell "cure disease" */	581	/* do the cure disease stuff, from the spell "cure disease" */
633	int	582	int
634	cure_disease (object sufferer, object caster)	583	cure_disease (object sufferer, object caster, object *spell)
635	{	584	{
636	object disease, next;	585	object disease, next;
637	int casting_level;
638	int cure = 0;	586	int cure = 0;
639		587
640	if (caster)
641	casting_level = caster->level;
642	else
643	casting_level = 1000; /* if null caster, CURE all. */	588	int casting_level = caster ? caster->level : 1000; /* if null caster, CURE all. */
644		589
645	for (disease = sufferer->inv; disease; disease = next)	590	for (disease = sufferer->inv; disease; disease = next)
646	{	591	{
647	next = disease->below;	592	next = disease->below;
648		593
…		…
656	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))))
657	{	602	{
658	remove_symptoms (disease);	603	remove_symptoms (disease);
659	cure = 1;	604	cure = 1;
660		605
661	if (caster)	606	if (caster && spell)
662	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);
663		608
664	disease->destroy ();	609	disease->destroy ();
665	}	610	}
666	}	611	}
667	}	612	}
…		…
676	}	621	}
677		622
678	return 1;	623	return 1;
679	}	624	}
680		625
		626	#if 0 // unused, but seems interesting
681	/* reduces disease progression: reduce_symptoms	627	/* reduces disease progression: reduce_symptoms
682	* return true if we actually reduce a disease.	628	* return true if we actually reduce a disease.
683	*/	629	*/
684		630	static int
685	int
686	reduce_symptoms (object *sufferer, int reduction)	631	reduce_symptoms (object *sufferer, int reduction)
687	{	632	{
688	object *walk;	633	object *walk;
689	int success = 0;	634	int success = 0;
690		635
…		…
693	if (walk->type == SYMPTOM)	638	if (walk->type == SYMPTOM)
694	{	639	{
695	if (walk->value > 0)	640	if (walk->value > 0)
696	{	641	{
697	success = 1;	642	success = 1;
698	walk->value = MAX (0, walk->value - 2 * reduction);	643	walk->value = max (0, walk->value - 2 * reduction);
699	/* give the disease time to modify this symptom,	644	/* give the disease time to modify this symptom,
700	* and reduce its severity. */	645	* and reduce its severity. */
701	walk->speed_left = 0;	646	walk->speed_left = 0;
702	}	647	}
703	}	648	}
704	}	649	}
		650
705	if (success)	651	if (success)
706	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
707	return success;	654	return success;
708	}	655	}
		656	#endif

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Comparing deliantra/server/server/disease.C (file contents): Revision 1.27 by root, Sun Jul 1 05:00:19 2007 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 1.27 by root, Sun Jul 1 05:00:19 2007 UTC vs.
Revision 1.73 by root, Sun Jan 29 02:47:05 2017 UTC