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

Comparing deliantra/server/server/disease.C (file contents):
Revision 1.4 by root, Sun Sep 10 15:59:57 2006 UTC vs.
Revision 1.54 by root, Fri Nov 6 12:49:19 2009 UTC

…		…
1
2	/*	1	/*
3	* static char *rcsid_disease_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
4	* "$Id: disease.C,v 1.4 2006/09/10 15:59:57 root Exp $";	3	*
		4	* Copyright (©) 2005,2006,2007,2008,2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
		6	* Copyright (©) 1992,2007 Frank Tore Johansen
		7	*
		8	* Deliantra is free software: you can redistribute it and/or modify it under
		9	* the terms of the Affero GNU General Public License as published by the
		10	* Free Software Foundation, either version 3 of the License, or (at your
		11	* option) any later version.
		12	*
		13	* This program is distributed in the hope that it will be useful,
		14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		16	* GNU General Public License for more details.
		17	*
		18	* You should have received a copy of the Affero GNU General Public License
		19	* and the GNU General Public License along with this program. If not, see
		20	* <http://www.gnu.org/licenses/>.
		21	*
		22	* The authors can be reached via e-mail to <support@deliantra.net>
5	*/	23	*/
6		24
7	/*
8	CrossFire, A Multiplayer game for X-windows
9
10	Copyright (C) 2002 Mark Wedel & Crossfire Development Team
11	Copyright (C) 1992 Frank Tore Johansen
12
13	This program is free software; you can redistribute it and/or modify
14	it under the terms of the GNU General Public License as published by
15	the Free Software Foundation; either version 2 of the License, or
16	(at your option) any later version.
17
18	This program is distributed in the hope that it will be useful,
19	but WITHOUT ANY WARRANTY; without even the implied warranty of
20	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21	GNU General Public License for more details.
22
23	You should have received a copy of the GNU General Public License
24	along with this program; if not, write to the Free Software
25	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26
27	The authors can be reached via e-mail to crossfire-devel@real-time.com
28	*/
29
30	/* This file contains all the code implementing diseases,	25	/* This file contains all the code implementing diseases,
31	except for odds and ends in attack.c and in	26	* except for odds and ends in attack.c and in
32	living.c*/	27	* living.c
33		28	*/
34
35		29
36	/*	30	/*
37		31
38	For DISEASES:	32	For DISEASES:
39	Stat Property Definition	33	Stat Property Definition
51	dam^ Damage How much damage it does (%?).	45	dam^ Damage How much damage it does (%?).
52	maxgrace+ Duration How long before the disease is naturally cured.	46	maxgrace+ Duration How long before the disease is naturally cured.
53	food DurCount Counter for Duration	47	food DurCount Counter for Duration
54		48
55	speed Speed How often the disease moves.	49	speed Speed How often the disease moves.
56	last_sp^ Lethargy Percentage of max speed--10 = 10% speed.	50	last_sp^ Lethargy Percentage of max speed. 10 = 10% speed.
57		51
58	maxsp^ Mana deplete Saps mana.	52	maxsp^ Mana deplete Saps mana.
59	ac^ Progressiveness How the diseases increases in severity.	53	ac^ Progressiveness How the diseases increases in severity.
60	last_eat*^ Deplete food saps food if negative	54	last_eat*^ Deplete food saps food if negative
61	last_heal GrantImmunity If nonzero, disease does NOT grant immunity	55	last_heal GrantImmunity If nonzero, disease does NOT grant immunity
…		…
132		126
133		127
134	#include <global.h>	128	#include <global.h>
135	#include <object.h>	129	#include <object.h>
136	#include <living.h>	130	#include <living.h>
137	#ifndef __CEXTRACT__
138	# include <sproto.h>	131	#include <sproto.h>
139	#endif
140	#include <spells.h>	132	#include <spells.h>
141	#include <sounds.h>	133	#include <sounds.h>
142	#include <skills.h>	134	#include <skills.h>
143		135
144	/* IMPLEMENTATION NOTES	136	/* IMPLEMENTATION NOTES
…		…
146	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
147	inventory. They themselves do nothing, except modify Symptoms, or	139	inventory. They themselves do nothing, except modify Symptoms, or
148	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:
149	these are their own object. */	141	these are their own object. */
150		142
151	/* check if victim is susceptible to disease. */	143	/* grants immunity to plagues we've seen before. */
152	static int	144	static int
153	is_susceptible_to_disease (object victim, object disease)	145	grant_immunity (object *disease)
154	{	146	{
155	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)
156	return 0;	152	return 0;
157		153
158	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 (walk->type == 98 && disease->name == walk->name)
		157	{
		158	walk->level = disease->level;
		159	return 1; /* just update the existing immunity. */
		160	}
		161
		162	immunity = get_archetype ("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
159	return 1;	170	return 1;
		171	}
160		172
161	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)
162	return 1;	180	return walk;
163		181
164	if ((victim->race && strstr (disease->race, victim->race)) \|\| strstr (disease->race, victim->name))
165	return 1;
166
167	return 0;	182	return NULL;
168	}
169
170	int
171	move_disease (object *disease)
172	{
173	/* first task is to determine if the disease is inside or outside of someone.
174	* If outside, we decrement 'value' until we're gone.
175	*/
176
177	if (disease->env == NULL)
178	{ /* we're outside of someone */
179	if (disease->stats.maxhp > 0)
180	disease->value--;
181	if (disease->value == 0)
182	{
183	remove_ob (disease);
184	free_object (disease);
185	return 1;
186	}
187	}
188	else
189	{
190	/* if we're inside a person, have the disease run its course */
191	/* negative foods denote "perpetual" diseases. */
192	if (disease->stats.food > 0)
193	{
194	disease->stats.food--;
195	if (disease->stats.food == 0)
196	{
197	remove_symptoms (disease); /* remove the symptoms of this disease */
198	grant_immunity (disease);
199	remove_ob (disease);
200	free_object (disease);
201	return 1;
202	}
203	}
204	}
205	/* check to see if we infect others */
206	check_infection (disease);
207
208	/* impose or modify the symptoms of the disease */
209	if (disease->env && is_susceptible_to_disease (disease->env, disease))
210	do_symptoms (disease);
211
212	return 0;
213	}	183	}
214		184
215	/* remove any symptoms of disease	185	/* remove any symptoms of disease
216	* 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
217	* player may have - I think through some odd interactoins with	187	* player may have - I think through some odd interactoins with
218	* disease level and player level and whatnot, a player could get	188	* disease level and player level and whatnot, a player could get
219	* more than one symtpom to a disease.	189	* more than one symtpom to a disease.
220	*/	190	*/
221		191	static int
222	int
223	remove_symptoms (object *disease)	192	remove_symptoms (object *disease)
224	{	193	{
225	object symptom, victim = NULL;	194	object symptom, victim = NULL;
226		195
227	while ((symptom = find_symptom (disease)) != NULL)	196	while ((symptom = find_symptom (disease)) != NULL)
228	{	197	{
229	if (!victim)	198	if (!victim)
230	victim = symptom->env;	199	victim = symptom->env;
231	remove_ob (symptom);	200
232	free_object (symptom);	201	symptom->destroy ();
233	}	202	}
		203
234	if (victim)	204	if (victim)
235	fix_player (victim);	205	victim->update_stats ();
		206
236	return 0;	207	return 0;
237	}	208	}
238		209
239	/* argument is a disease */
240	object *
241	find_symptom (object *disease)
242	{
243	object *walk;
244
245	/* check the inventory for symptoms */
246	for (walk = disease->env->inv; walk; walk = walk->below)
247	if (!strcmp (walk->name, disease->name) && walk->type == SYMPTOM)
248	return walk;
249	return NULL;
250	}
251
252	/* 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	unordered_mapwalk (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 (!QUERY_FLAG (victim, FLAG_ALIVE))
		238	return 0;
		239
		240	if (victim->flag [FLAG_WIZ])
		241	return 0;
		242
		243	if (disease->race.contains ("*") && !QUERY_FLAG (victim, FLAG_UNDEAD))
		244	return 1;
		245
		246	if ((disease->race == shstr_undead) && QUERY_FLAG (victim, 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->type == SIGN) /* possibly an immunity, or diseased */
		294	if (tmp->name == disease->name && tmp->level >= disease->level)
		295	return 0; /* Immune! */
		296
		297	object *new_symptom = get_archetype ("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->speed = disease->speed;
		323	new_symptom->value = 0;
		324
		325	for (int i = 0; i < NUM_STATS; ++i)
		326	new_symptom->stats.stat (i) = disease->stats.stat (i);
		327
		328	new_symptom->stats.sp = disease->stats.sp;
		329	new_symptom->stats.food = disease->last_eat;
		330	new_symptom->stats.maxsp = disease->stats.maxsp;
		331	new_symptom->last_sp = disease->last_sp;
		332	new_symptom->stats.exp = 0;
		333	new_symptom->stats.hp = disease->stats.hp;
		334	new_symptom->msg = disease->msg;
		335	new_symptom->attacktype = disease->attacktype;
		336	new_symptom->other_arch = disease->other_arch;
		337	new_symptom->skill = disease->skill;
		338
		339	new_symptom->move_block = 0;
		340
		341	victim->head_ ()->insert (new_symptom);
		342
		343	// set owner last, as insert clears owner
		344	new_symptom->set_owner (disease->owner);
		345
		346	return 1;
		347	}
		348
		349	/* now deal with progressing diseases: we increase the debility
		350	* caused by the symptoms.
		351	*/
		352	if (disease->stats.ac)
		353	{
		354	symptom->value = clamp (symptom->value + disease->stats.ac, 0, 100*100);
		355
		356	float scale = 1.f + symptom->value / 100.f;
		357
		358	/* now rescale all the debilities */
		359	for (int i = 0; i < NUM_STATS; ++i)
		360	symptom->stats.stat (i) = clamp (int (scale * disease->stats.stat (i)), -128, 127);
		361
		362	symptom->stats.dam = clamp (scale * disease->stats.dam , -1024, 1024);
		363	symptom->stats.food = clamp (scale * disease->last_eat , -1024, 1024);
		364	symptom->stats.maxsp = clamp (scale * disease->stats.maxsp, -1024, 1024);
		365	symptom->stats.sp = clamp (scale * disease->stats.sp , -1024, 1024);
		366	symptom->stats.hp = clamp (scale * disease->stats.hp , -1024, 1024);
		367	symptom->stats.exp = 0;
		368	symptom->last_sp = disease->last_sp ? clamp (disease->last_sp / scale, 1, 1024) : 0;
		369	symptom->msg = disease->msg;
		370	symptom->attacktype = disease->attacktype;
		371	symptom->other_arch = disease->other_arch;
		372	}
		373
		374	SET_FLAG (symptom, FLAG_APPLIED);
		375	victim->update_stats ();
		376
		377	return 1;
		378	}
		379
253	int	380	int
254	check_infection (object *disease)	381	move_disease (object *disease)
255	{	382	{
256	int x, y, range, mflags;	383	/* First task is to determine if the disease is inside or outside of someone.
257	mapstruct map, map2;	384	* If outside, we decrement 'value' until we're gone.
258	object *tmp;	385	*/
259	sint16 i, j, i2, j2;
260		386
261	range = abs (disease->magic);
262	if (disease->env)	387	if (!disease->env)
263	{	388	{ /* we're outside of someone */
264	x = disease->env->x;	389	if (disease->stats.maxhp > 0)
265	y = disease->env->y;	390	disease->value--;
266	map = disease->env->map;	391
		392	if (!disease->value)
		393	{
		394	disease->destroy ();
		395	return 1;
		396	}
267	}	397	}
268	else	398	else
269	{	399	{
270	x = disease->x;	400	/* if we're inside a person, have the disease run its course */
271	y = disease->y;	401	/* negative/zero food denotes "perpetual" diseases. */
272	map = disease->map;	402	if (disease->stats.food > 0)
273	}
274
275	if (map == NULL)
276	return 0;
277	for (i = x - range; i <= x + range; i++)
278	{
279	for (j = y - range; j <= y + range; j++)
280	{	403	{
281	mflags = get_map_flags (map, &map2, i, j, &i2, &j2);	404	disease->stats.food--;
282	if (!(mflags & P_OUT_OF_MAP) && (mflags & P_IS_ALIVE))	405
		406	if (!disease->stats.food)
283	{	407	{
284	for (tmp = get_map_ob (map2, i2, j2); tmp; tmp = tmp->above)	408	remove_symptoms (disease); /* remove the symptoms of this disease */
285	{	409	grant_immunity (disease);
286	infect_object (tmp, disease, 0);	410	disease->destroy ();
287	}	411	return 1;
288	}	412	}
289	}	413	}
290	}	414	}
		415
		416	/* check to see if we infect others */
		417	check_infection (disease);
		418
		419	/* impose or modify the symptoms of the disease */
		420	if (disease->env && is_susceptible_to_disease (disease->env, disease))
		421	do_symptoms (disease);
		422
291	return 1;	423	return 0;
292	}	424	}
293
294		425
295	/* check to see if an object is infectable:	426	/* check to see if an object is infectable:
296	* objects with immunity aren't infectable.	427	* objects with immunity aren't infectable.
297	* objects already infected aren't infectable.	428	* objects already infected aren't infectable.
298	* dead objects aren't infectable.	429	* dead objects aren't infectable.
…		…
317	/* roll the dice on infection before doing the inventory check! */	448	/* roll the dice on infection before doing the inventory check! */
318	if (!force && (random_roll (0, 126, victim, PREFER_HIGH) >= disease->stats.wc))	449	if (!force && (random_roll (0, 126, victim, PREFER_HIGH) >= disease->stats.wc))
319	return 0;	450	return 0;
320		451
321	/* do an immunity check */	452	/* do an immunity check */
322	if (victim->head)
323	tmp = victim->head->inv;
324	else
325	tmp = victim->inv;
326		453
327	/* There used to (IMO) be a flaw in the below - it used to be the case	454	/* There used to (IMO) be a flaw in the below - it used to be the case
328	* that if level check was done for both immunity and disease. This could	455	* that if level check was done for both immunity and disease. This could
329	* result in a person with multiple afflictions of the same disease	456	* result in a person with multiple afflictions of the same disease
330	* (eg, level 1 cold, level 2 cold, level 3 cold, etc), as long as	457	* (eg, level 1 cold, level 2 cold, level 3 cold, etc), as long as
331	* they were cast in that same order. Instead, change it so that	458	* they were cast in that same order. Instead, change it so that
332	* if you diseased, you can't get diseased more.	459	* if you diseased, you can't get diseased more.
333	*/	460	*/
334		461
335	for ( /* tmp initialized in if, above */ ; tmp; tmp = tmp->below)	462	for (tmp = victim->head_ ()->inv; tmp; tmp = tmp->below)
336	{
337	if (tmp->type == SIGN && !strcmp (tmp->name, disease->name) && tmp->level >= disease->level)	463	if (tmp->type == SIGN && tmp->name == disease->name && tmp->level >= disease->level)
338	return 0; /Immune! /	464	return 0; /* Immune! */
339	else if (tmp->type == DISEASE && !strcmp (tmp->name, disease->name))	465	else if (tmp->type == DISEASE && tmp->name == disease->name)
340	return 0; /* already diseased */	466	return 0; /* already diseased */
341	}
342		467
343	/* If we've gotten this far, go ahead and infect the victim. */	468	/* If we've gotten this far, go ahead and infect the victim. */
344	new_disease = get_object ();	469
345	copy_object (disease, new_disease);	470	new_disease = disease->clone ();
		471
346	new_disease->stats.food = disease->stats.maxgrace;	472	new_disease->stats.food = disease->stats.maxgrace;
347	new_disease->value = disease->stats.maxhp;	473	new_disease->value = disease->stats.maxhp;
348	new_disease->stats.wc -= disease->last_grace; /* self-limiting factor */	474	new_disease->stats.wc -= disease->last_grace; /* self-limiting factor */
349		475
350	/* Unfortunately, set_owner does the wrong thing to the skills pointers
351	* resulting in exp going into the owners current chosen skill.
352	*/
353
354	if (get_owner (disease))
355	{
356	set_owner (new_disease, disease->owner);
357
358	/* Only need to update skill if different */
359	if (new_disease->skill != disease->skill)
360	new_disease->skill = disease->skill;
361	}
362	else
363	{ /* for diseases which are passed by hitting, set owner and praying skill */
364	if (disease->env && disease->env->type == PLAYER)
365	{
366	object *player = disease->env;
367
368	set_owner (new_disease, player);
369
370	/* the skill pointer for these diseases should already be set up -
371	* hardcoding in 'praying' is not the right approach.
372	*/
373	}
374	}
375
376	insert_ob_in_ob (new_disease, victim);
377	/* This appears to be a horrible case of overloading 'NO_PASS'	476	/* This appears to be a horrible case of overloading 'NO_PASS'
378	* for meaning in the diseases.	477	* for meaning in the diseases.
379	*/	478	*/
380	new_disease->move_block = 0;	479	new_disease->move_block = 0;
		480
		481	// insert before setting the owner
		482	victim->head_ ()->insert (new_disease);
		483
		484	if (disease->owner)
		485	new_disease->set_owner (disease->owner);
		486	else if (object *pl = disease->in_player ())
		487	/* for diseases which are passed by hitting, set owner and skill */
		488	new_disease->set_owner (pl);
		489
381	if (new_disease->owner && new_disease->owner->type == PLAYER)	490	if (new_disease->owner && new_disease->owner->type == PLAYER)
382	{	491	{
383	char buf[128];	492	const char *buf;
384		493
385	/* if the disease has a title, it has a special infection message	494	/* if the disease has a title, it has a special infection message
386	* This messages is printed in the form MESSAGE victim	495	* This messages is printed in the form MESSAGE victim
387	*/	496	*/
388	if (new_disease->title)	497	if (new_disease->title)
389	sprintf (buf, "%s %s!!", &disease->title, &victim->name);	498	buf = format ("%s %s!!", &disease->title, &victim->name);
390	else	499	else
391	sprintf (buf, "You infect %s with your disease, %s!", &victim->name, &new_disease->name);	500	buf = format ("You infect %s with your disease, %s!", &victim->name, &new_disease->name);
392		501
393	if (victim->type == PLAYER)	502	if (victim->type == PLAYER)
394	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, new_disease->owner, buf);	503	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, new_disease->owner, buf);
395	else	504	else
396	new_draw_info (0, 4, new_disease->owner, buf);	505	new_draw_info (0, 4, new_disease->owner, buf);
397	}	506	}
		507
398	if (victim->type == PLAYER)	508	if (victim->type == PLAYER)
399	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, "You suddenly feel ill.");	509	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, "You suddenly feel ill.");
400		510
401	return 1;	511	return 1;
402
403	}	512	}
404
405
406
407	/* this function monitors the symptoms caused by the disease (if any),
408	causes symptoms, and modifies existing symptoms in the case of
409	existing diseases. */
410
411	int
412	do_symptoms (object *disease)
413	{
414	object *symptom;
415	object *victim;
416	object *tmp;
417
418	victim = disease->env;
419
420	/* This is a quick hack - for whatever reason, disease->env will point
421	* back to disease, causing endless loops. Why this happens really needs
422	* to be found, but this should at least prevent the infinite loops.
423	*/
424
425	if (victim == NULL \|\| victim == disease)
426	return 0; /* no-one to inflict symptoms on */
427
428	symptom = find_symptom (disease);
429	if (symptom == NULL)
430	{
431	/* no symptom? need to generate one! */
432	object *new_symptom;
433
434	/* first check and see if the carrier of the disease is immune. If so, no symptoms! */
435	if (!is_susceptible_to_disease (victim, disease))
436	return 0;
437
438	/* check for an actual immunity */
439	/* do an immunity check */
440	if (victim->head)
441	tmp = victim->head->inv;
442	else
443	tmp = victim->inv;
444
445	for ( /* tmp initialized in if, above */ ; tmp; tmp = tmp->below)
446	{
447	if (tmp->type == SIGN) /* possibly an immunity, or diseased */
448	if (!strcmp (tmp->name, disease->name) && tmp->level >= disease->level)
449	return 0; /Immune! /
450	}
451
452	new_symptom = get_archetype (ARCH_SYMPTOM);
453
454	/* Something special done with dam. We want diseases to be more
455	* random in what they'll kill, so we'll make the damage they
456	* do random, note, this has a weird effect with progressive diseases.
457	*/
458	if (disease->stats.dam != 0)
459	{
460	int dam = disease->stats.dam;
461
462	/* reduce the damage, on average, 50%, and making things random. */
463
464	dam = random_roll (1, FABS (dam), victim, PREFER_LOW);
465	if (disease->stats.dam < 0)
466	dam = -dam;
467	new_symptom->stats.dam = dam;
468	}
469
470
471	new_symptom->stats.maxsp = disease->stats.maxsp;
472	new_symptom->stats.food = new_symptom->stats.maxgrace;
473
474	new_symptom->name = new_symptom->name_pl = disease->name;
475
476	new_symptom->level = disease->level;
477	new_symptom->speed = disease->speed;
478	new_symptom->value = 0;
479	new_symptom->stats.Str = disease->stats.Str;
480	new_symptom->stats.Dex = disease->stats.Dex;
481	new_symptom->stats.Con = disease->stats.Con;
482	new_symptom->stats.Wis = disease->stats.Wis;
483	new_symptom->stats.Int = disease->stats.Int;
484	new_symptom->stats.Pow = disease->stats.Pow;
485	new_symptom->stats.Cha = disease->stats.Cha;
486	new_symptom->stats.sp = disease->stats.sp;
487	new_symptom->stats.food = disease->last_eat;
488	new_symptom->stats.maxsp = disease->stats.maxsp;
489	new_symptom->last_sp = disease->last_sp;
490	new_symptom->stats.exp = 0;
491	new_symptom->stats.hp = disease->stats.hp;
492	new_symptom->msg = disease->msg;
493	new_symptom->attacktype = disease->attacktype;
494	new_symptom->other_arch = disease->other_arch;
495
496	set_owner (new_symptom, disease->owner);
497
498	if (new_symptom->skill != disease->skill)
499	new_symptom->skill = disease->skill;
500
501	new_symptom->move_block = 0;
502	insert_ob_in_ob (new_symptom, victim);
503	return 1;
504	}
505
506	/* now deal with progressing diseases: we increase the debility
507	* caused by the symptoms.
508	*/
509
510	if (disease->stats.ac != 0)
511	{
512	float scale;
513
514	symptom->value += disease->stats.ac;
515	scale = 1.0 + symptom->value / 100.0;
516	/* now rescale all the debilities */
517	symptom->stats.Str = (int) (scale * disease->stats.Str);
518	symptom->stats.Dex = (int) (scale * disease->stats.Dex);
519	symptom->stats.Con = (int) (scale * disease->stats.Con);
520	symptom->stats.Wis = (int) (scale * disease->stats.Wis);
521	symptom->stats.Int = (int) (scale * disease->stats.Int);
522	symptom->stats.Pow = (int) (scale * disease->stats.Pow);
523	symptom->stats.Cha = (int) (scale * disease->stats.Cha);
524	symptom->stats.dam = (int) (scale * disease->stats.dam);
525	symptom->stats.sp = (int) (scale * disease->stats.sp);
526	symptom->stats.food = (int) (scale * disease->last_eat);
527	symptom->stats.maxsp = (int) (scale * disease->stats.maxsp);
528	symptom->last_sp = (int) (scale * disease->last_sp);
529	symptom->stats.exp = 0;
530	symptom->stats.hp = (int) (scale * disease->stats.hp);
531	symptom->msg = disease->msg;
532	symptom->attacktype = disease->attacktype;
533	symptom->other_arch = disease->other_arch;
534	}
535	SET_FLAG (symptom, FLAG_APPLIED);
536	fix_player (victim);
537	return 1;
538	}
539
540
541	/* grants immunity to plagues we've seen before. */
542	int
543	grant_immunity (object *disease)
544	{
545	object *immunity;
546	object *walk;
547
548	/* Don't give immunity to this disease if last_heal is set. */
549	if (disease->last_heal)
550	return 0;
551	/* first, search for an immunity of the same name */
552	for (walk = disease->env->inv; walk; walk = walk->below)
553	{
554	if (walk->type == 98 && !strcmp (disease->name, walk->name))
555	{
556	walk->level = disease->level;
557	return 1; /* just update the existing immunity. */
558	}
559	}
560	immunity = get_archetype ("immunity");
561	immunity->name = disease->name;
562	immunity->level = disease->level;
563	immunity->move_block = 0;
564	insert_ob_in_ob (immunity, disease->env);
565	return 1;
566
567	}
568
569		513
570	/* make the symptom do the nasty things it does */	514	/* make the symptom do the nasty things it does */
571
572	int	515	int
573	move_symptom (object *symptom)	516	move_symptom (object *symptom)
574	{	517	{
575	object *victim = symptom->env;	518	object *victim = symptom->env;
576	object *new_ob;	519	object *new_ob;
577	int sp_reduce;	520	int sp_reduce;
578		521
579	if (victim == NULL \|\| victim->map == NULL)	522	if (!victim \|\| !victim->map)
580	{ /* outside a monster/player, die immediately */	523	{ /* outside a monster/player, die immediately */
581	remove_ob (symptom);	524	symptom->destroy ();
582	free_object (symptom);
583	return 0;	525	return 0;
584	}	526	}
585		527
586	if (symptom->stats.dam > 0)	528	if (symptom->stats.dam > 0)
587	hit_player (victim, symptom->stats.dam, symptom, symptom->attacktype, 1);	529	hit_player (victim, symptom->stats.dam, symptom, symptom->attacktype, 1);
588	else	530	else
589	hit_player (victim, (int) MAX (1, -victim->stats.maxhp * symptom->stats.dam / 100.0), symptom, symptom->attacktype, 1);	531	hit_player (victim, max (1, -victim->stats.maxhp * symptom->stats.dam / 100), symptom, symptom->attacktype, 1);
590		532
591	if (symptom->stats.maxsp > 0)	533	if (symptom->stats.maxsp > 0)
592	sp_reduce = symptom->stats.maxsp;	534	sp_reduce = symptom->stats.maxsp;
593	else	535	else
594	sp_reduce = (int) MAX (1, victim->stats.maxsp * symptom->stats.maxsp / 100.0);	536	sp_reduce = max (1, victim->stats.maxsp * symptom->stats.maxsp / 100);
		537
595	victim->stats.sp = MAX (0, victim->stats.sp - sp_reduce);	538	victim->stats.sp = max (0, victim->stats.sp - sp_reduce);
596		539
597	/* create the symptom "other arch" object and drop it here	540	/* create the symptom "other arch" object and drop it here
598	* under every part of the monster	541	* under every part of the monster
599	* The victim may well have died.	542	* The victim may well have died.
600	*/	543	*/
601
602	if (victim->map == NULL)	544	if (victim->map)
603	return 0;	545	{
		546	victim->play_sound (symptom->sound);
		547
604	if (symptom->other_arch)	548	if (symptom->other_arch)
605	{	549	for (object *tmp = victim->head_ (); tmp; tmp = tmp->more)
606	object *tmp;
607
608	tmp = victim;
609	if (tmp->head != NULL)
610	tmp = tmp->head;
611	for ( /tmp initialized above / ; tmp != NULL; tmp = tmp->more)
612	{	550	{
613	new_ob = arch_to_object (symptom->other_arch);	551	new_ob = arch_to_object (symptom->other_arch);
614	new_ob->x = tmp->x;	552	new_ob->x = tmp->x;
615	new_ob->y = tmp->y;	553	new_ob->y = tmp->y;
616	new_ob->map = victim->map;	554	new_ob->map = victim->map;
617	insert_ob_in_map (new_ob, victim->map, victim, 0);	555	insert_ob_in_map (new_ob, victim->map, victim, 0);
618	}	556	}
619	}	557	}
		558
620	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, symptom->msg);	559	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, symptom->msg);
621		560
622	return 1;	561	return 1;
623	}	562	}
624		563
625
626	/* possibly infect due to direct physical contact	564	/* possibly infect due to direct physical contact
627	i.e., AT_PHYSICAL-- called from "hit_player_attacktype" */	565	* i.e., AT_PHYSICAL-- called from "hit_player_attacktype" */
628
629	int	566	int
630	check_physically_infect (object victim, object hitter)	567	check_physically_infect (object victim, object hitter)
631	{	568	{
632	object *walk;
633
634	/* search for diseases, give every disease a chance to infect */	569	/* search for diseases, give every disease a chance to infect */
635	for (walk = hitter->inv; walk != NULL; walk = walk->below)	570	for (object *disease = hitter->inv; disease; disease = disease->below)
636	if (walk->type == DISEASE)	571	if (disease->type == DISEASE)
637	infect_object (victim, walk, 0);	572	infect_object (victim, disease, 0);
		573
638	return 1;	574	return 1;
639	}	575	}
640		576
641	/* find a disease in someone*/	577	// find a disease in someone
642	object *	578	static object *
643	find_disease (object *victim)	579	find_disease (object *victim)
644	{	580	{
645	object *walk;	581	for (object *disease = victim->inv; disease; disease = disease->below)
646
647	for (walk = victim->inv; walk; walk = walk->below)
648	if (walk->type == DISEASE)	582	if (disease->type == DISEASE)
649	return walk;	583	return disease;
		584
650	return NULL;	585	return 0;
651	}	586	}
652		587
653	/* do the cure disease stuff, from the spell "cure disease" */	588	/* do the cure disease stuff, from the spell "cure disease" */
654
655	int	589	int
656	cure_disease (object sufferer, object caster)	590	cure_disease (object sufferer, object caster, object *spell)
657	{	591	{
658	object disease, next;	592	object disease, next;
659	int casting_level;
660	int cure = 0;	593	int cure = 0;
661		594
662	if (caster)
663	casting_level = caster->level;
664	else
665	casting_level = 1000; /* if null caster, CURE all. */	595	int casting_level = caster ? caster->level : 1000; /* if null caster, CURE all. */
666		596
667	for (disease = sufferer->inv; disease; disease = next)	597	for (disease = sufferer->inv; disease; disease = next)
668	{	598	{
669	next = disease->below;	599	next = disease->below;
670		600
671	if (disease->type == DISEASE)	601	if (disease->type == DISEASE)
672	{ /* attempt to cure this disease */	602	{ /* attempt to cure this disease */
673	/* If caster lvel is higher than disease level, cure chance	603	/* If caster level is higher than disease level, cure chance
674	* is automatic. If lower, then the chance is basically	604	* is automatic. If lower, then the chance is basically
675	* 1 in level_diff - if there is a 5 level difference, chance	605	* 1 in level_diff - if there is a 5 level difference, chance
676	* is 1 in 5.	606	* is 1 in 5.
677	*/	607	*/
678	if ((casting_level >= disease->level) \|\| (!(random_roll (0, (disease->level - casting_level - 1), caster, PREFER_LOW))))	608	if ((casting_level >= disease->level) \|\| (!(random_roll (0, (disease->level - casting_level - 1), caster, PREFER_LOW))))
679	{	609	{
680
681	remove_symptoms (disease);	610	remove_symptoms (disease);
682	remove_ob (disease);
683	cure = 1;	611	cure = 1;
		612
684	if (caster)	613	if (caster && spell)
685	change_exp (caster, disease->stats.exp, caster->chosen_skill ? &caster->chosen_skill->skill : (const char *) 0, 0);	614	change_exp (caster, disease->stats.exp, spell->skill, SK_EXP_SKILL_ONLY);
686	free_object (disease);	615
		616	disease->destroy ();
687	}	617	}
688	}	618	}
689	}	619	}
		620
690	if (cure)	621	if (cure)
691	{	622	{
692	/* Only draw these messages once */	623	/* Only draw these messages once */
693	if (caster)	624	if (caster)
694	new_draw_info_format (NDI_UNIQUE, 0, caster, "You cure a disease!");	625	new_draw_info_format (NDI_UNIQUE, 0, caster, "You cure a disease!");
		626
695	new_draw_info (NDI_UNIQUE, 0, sufferer, "You no longer feel diseased.");	627	new_draw_info (NDI_UNIQUE, 0, sufferer, "You no longer feel diseased.");
696	}	628	}
		629
697	return 1;	630	return 1;
698	}	631	}
699		632
700	/* reduces disease progression: reduce_symptoms	633	/* reduces disease progression: reduce_symptoms
701	* return true if we actually reduce a disease.	634	* return true if we actually reduce a disease.
702	*/	635	*/
703
704	int	636	int
705	reduce_symptoms (object *sufferer, int reduction)	637	reduce_symptoms (object *sufferer, int reduction)
706	{	638	{
707	object *walk;	639	object *walk;
708	int success = 0;	640	int success = 0;
…		…
712	if (walk->type == SYMPTOM)	644	if (walk->type == SYMPTOM)
713	{	645	{
714	if (walk->value > 0)	646	if (walk->value > 0)
715	{	647	{
716	success = 1;	648	success = 1;
717	walk->value = MAX (0, walk->value - 2 * reduction);	649	walk->value = max (0, walk->value - 2 * reduction);
718	/* give the disease time to modify this symptom,	650	/* give the disease time to modify this symptom,
719	* and reduce its severity. */	651	* and reduce its severity. */
720	walk->speed_left = 0;	652	walk->speed_left = 0;
721	}	653	}
722	}	654	}
723	}	655	}
		656
724	if (success)	657	if (success)
725	new_draw_info (NDI_UNIQUE, 0, sufferer, "Your illness seems less severe.");	658	new_draw_info (NDI_UNIQUE, 0, sufferer, "Your illness seems less severe.");
		659
726	return success;	660	return success;
727	}	661	}

Diff Legend

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

Comparing deliantra/server/server/disease.C (file contents): Revision 1.4 by root, Sun Sep 10 15:59:57 2006 UTC vs. Revision 1.54 by root, Fri Nov 6 12:49:19 2009 UTC

Diff Legend

Comparing deliantra/server/server/disease.C (file contents):
Revision 1.4 by root, Sun Sep 10 15:59:57 2006 UTC vs.
Revision 1.54 by root, Fri Nov 6 12:49:19 2009 UTC