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

Comparing deliantra/server/server/disease.C (file contents):
Revision 1.28 by root, Tue Jul 10 05:51:38 2007 UTC vs.
Revision 1.68 by root, Sun May 1 16:58:17 2011 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 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
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
…		…
137	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
138	inventory. They themselves do nothing, except modify Symptoms, or	139	inventory. They themselves do nothing, except modify Symptoms, or
139	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:
140	these are their own object. */	141	these are their own object. */
141		142
		143	/* grants immunity to plagues we've seen before. */
		144	static int
		145	grant_immunity (object *disease)
		146	{
		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)
		152	return 0;
		153
		154	/* first, search for an immunity of the same name */
		155	for (walk = disease->env->inv; walk; walk = walk->below)
		156	if (disease->name == walk->name && walk->is_immunity ())
		157	{
		158	walk->level = disease->level;
		159	return 1; /* just update the existing immunity. */
		160	}
		161
		162	immunity = archetype::get (shstr_immunity);
		163
		164	immunity->name = disease->name;
		165	immunity->level = disease->level;
		166	immunity->move_block = 0;
		167
		168	insert_ob_in_ob (immunity, disease->env);
		169
		170	return 1;
		171	}
		172
		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)
		180	return walk;
		181
		182	return NULL;
		183	}
		184
		185	/* remove any symptoms of disease
		186	* Modified by MSW 2003-03-28 do try to find all the symptom the
		187	* player may have - I think through some odd interactoins with
		188	* disease level and player level and whatnot, a player could get
		189	* more than one symtpom to a disease.
		190	*/
		191	static int
		192	remove_symptoms (object *disease)
		193	{
		194	object symptom, victim = NULL;
		195
		196	while ((symptom = find_symptom (disease)) != NULL)
		197	{
		198	if (!victim)
		199	victim = symptom->env;
		200
		201	symptom->destroy ();
		202	}
		203
		204	if (victim)
		205	victim->update_stats ();
		206
		207	return 0;
		208	}
		209
		210	/* searches around for more victims to infect */
		211	static int
		212	check_infection (object *disease)
		213	{
		214	int range = abs (disease->magic);
		215
		216	object *op = disease->outer_env_or_self ();
		217
		218	if (!op->is_on_map ())
		219	return 0;
		220
		221	dynbuf buf;
		222	unordered_mapwalk (buf, op, -range, -range, range, range)
		223	{
		224	mapspace &ms = m->at (nx, ny);
		225
		226	if (ms.flags () & P_IS_ALIVE)
		227	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
		228	infect_object (tmp, disease, 0);
		229	}
		230
		231	return 1;
		232	}
		233
142	/* check if victim is susceptible to disease. */	234	/* check if victim is susceptible to disease. */
143	static int	235	static int
144	is_susceptible_to_disease (object victim, object disease)	236	is_susceptible_to_disease (object victim, object disease)
145	{	237	{
146	if (!QUERY_FLAG (victim, FLAG_ALIVE))	238	if (!victim->flag [FLAG_ALIVE])
147	return 0;	239	return 0;
148		240
149	if (strstr (disease->race, "*") && !QUERY_FLAG (victim, FLAG_UNDEAD))	241	if (victim->flag [FLAG_WIZ])
		242	return 0;
		243
		244	if (disease->race.contains ("*") && !victim->flag [FLAG_UNDEAD])
150	return 1;	245	return 1;
151		246
152	if ((disease->race == shstr_undead) && QUERY_FLAG (victim, FLAG_UNDEAD))	247	if ((disease->race == shstr_undead) && victim->flag [FLAG_UNDEAD])
153	return 1;	248	return 1;
154		249
155	if ((victim->race && strstr (disease->race, victim->race)) \|\| strstr (disease->race, victim->name))	250	if ((victim->race && disease->race.contains (victim->race)) \|\| disease->race.contains (victim->name))
156	return 1;	251	return 1;
157		252
158	return 0;	253	return 0;
		254	}
		255
		256	/* this function monitors the symptoms caused by the disease (if any),
		257	causes symptoms, and modifies existing symptoms in the case of
		258	existing diseases. */
		259	static int
		260	do_symptoms (object *disease)
		261	{
		262	object *symptom;
		263	object *victim;
		264	object *tmp;
		265
		266	victim = disease->env;
		267
		268	if (!victim)
		269	return 0; /* no-one to inflict symptoms on */
		270
		271	/* This is a quick hack - for whatever reason, disease->env will point
		272	* back to disease, causing endless loops. Why this happens really needs
		273	* to be found, but this should at least prevent the infinite loops.
		274	*/
		275	//TODO: should no longer be the case, monitor, and remove
		276	if (victim == disease)
		277	{
		278	LOG (llevError \| logBacktrace, "%s: disease->env points to itself", disease->debug_desc ());
		279	return 0;
		280	}
		281
		282	symptom = find_symptom (disease);
		283	if (!symptom)
		284	{
		285	/* no symptom? need to generate one! */
		286
		287	/* first check and see if the carrier of the disease is immune. If so, no symptoms! */
		288	if (!is_susceptible_to_disease (victim, disease))
		289	return 0;
		290
		291	/* check for an actual immunity */
		292	/* do an immunity check */
		293	for (tmp = victim->head_ ()->inv; tmp; tmp = tmp->below)
		294	if (tmp->name == disease->name && tmp->is_immunity ()) /* possibly an immunity, or diseased */
		295	if (tmp->level >= disease->level)
		296	return 0; /* Immune! */
		297
		298	object *new_symptom = archetype::get (shstr_symptom);
		299
		300	/* Something special done with dam. We want diseases to be more
		301	* random in what they'll kill, so we'll make the damage they
		302	* do random, note, this has a weird effect with progressive diseases.
		303	*/
		304	if (disease->stats.dam)
		305	{
		306	int dam = disease->stats.dam;
		307
		308	/* reduce the damage, on average, 50%, and making things random. */
		309
		310	dam = random_roll (1, abs (dam), victim, PREFER_LOW);
		311	if (disease->stats.dam < 0)
		312	dam = -dam;
		313
		314	new_symptom->stats.dam = dam;
		315	}
		316
		317	new_symptom->stats.maxsp = disease->stats.maxsp;
		318	new_symptom->stats.food = new_symptom->stats.maxgrace;
		319
		320	new_symptom->name = new_symptom->name_pl = disease->name;
		321
		322	new_symptom->level = disease->level;
		323	new_symptom->value = 0;
		324
		325	new_symptom->set_speed (disease->speed);
		326
		327	for (int i = 0; i < NUM_STATS; ++i)
		328	new_symptom->stats.stat (i) = disease->stats.stat (i);
		329
		330	new_symptom->stats.sp = disease->stats.sp;
		331	new_symptom->stats.food = disease->last_eat;
		332	new_symptom->stats.maxsp = disease->stats.maxsp;
		333	new_symptom->last_sp = disease->last_sp;
		334	new_symptom->stats.exp = 0;
		335	new_symptom->stats.hp = disease->stats.hp;
		336	new_symptom->msg = disease->msg;
		337	new_symptom->attacktype = disease->attacktype;
		338	new_symptom->other_arch = disease->other_arch;
		339	new_symptom->skill = disease->skill;
		340
		341	new_symptom->move_block = 0;
		342
		343	victim->head_ ()->insert (new_symptom);
		344
		345	// set owner last, as insert clears owner
		346	new_symptom->set_owner (disease->owner);
		347
		348	return 1;
		349	}
		350
		351	/* now deal with progressing diseases: we increase the debility
		352	* caused by the symptoms.
		353	*/
		354	if (disease->stats.ac)
		355	{
		356	symptom->value = clamp (symptom->value + disease->stats.ac, 0, 100*100);
		357
		358	float scale = 1.f + symptom->value / 100.f;
		359
		360	/* now rescale all the debilities */
		361	for (int i = 0; i < NUM_STATS; ++i)
		362	symptom->stats.stat (i) = clamp (int (scale * disease->stats.stat (i)), -128, 127);
		363
		364	symptom->stats.dam = clamp (scale * disease->stats.dam , -1024, 1024);
		365	symptom->stats.food = clamp (scale * disease->last_eat , -1024, 1024);
		366	symptom->stats.maxsp = clamp (scale * disease->stats.maxsp, -1024, 1024);
		367	symptom->stats.sp = clamp (scale * disease->stats.sp , -1024, 1024);
		368	symptom->stats.hp = clamp (scale * disease->stats.hp , -1024, 1024);
		369	symptom->stats.exp = 0;
		370	symptom->last_sp = disease->last_sp ? clamp (disease->last_sp / scale, 1, 1024) : 0;
		371	symptom->msg = disease->msg;
		372	symptom->attacktype = disease->attacktype;
		373	symptom->other_arch = disease->other_arch;
		374	}
		375
		376	symptom->set_flag (FLAG_APPLIED);
		377	victim->update_stats ();
		378
		379	return 1;
159	}	380	}
160		381
161	int	382	int
162	move_disease (object *disease)	383	move_disease (object *disease)
163	{	384	{
164	/* first task is to determine if the disease is inside or outside of someone.	385	/* First task is to determine if the disease is inside or outside of someone.
165	* If outside, we decrement 'value' until we're gone.	386	* If outside, we decrement 'value' until we're gone.
166	*/	387	*/
167		388
168	if (disease->env == NULL)	389	if (!disease->env)
169	{ /* we're outside of someone */	390	{ /* we're outside of someone */
170	if (disease->stats.maxhp > 0)	391	if (disease->stats.maxhp > 0)
171	disease->value--;	392	disease->value--;
172		393
173	if (disease->value == 0)	394	if (!disease->value)
174	{	395	{
175	disease->destroy ();	396	disease->destroy ();
176	return 1;	397	return 1;
177	}	398	}
178	}	399	}
179	else	400	else
180	{	401	{
181	/* if we're inside a person, have the disease run its course */	402	/* if we're inside a person, have the disease run its course */
182	/* negative foods denote "perpetual" diseases. */	403	/* negative/zero food denotes "perpetual" diseases. */
183	if (disease->stats.food > 0)	404	if (disease->stats.food > 0)
184	{	405	{
185	disease->stats.food--;	406	disease->stats.food--;
186		407
187	if (disease->stats.food == 0)	408	if (!disease->stats.food)
188	{	409	{
189	remove_symptoms (disease); /* remove the symptoms of this disease */	410	remove_symptoms (disease); /* remove the symptoms of this disease */
190	grant_immunity (disease);	411	grant_immunity (disease);
191	disease->destroy ();	412	disease->destroy ();
192	return 1;	413	return 1;
…		…
201	if (disease->env && is_susceptible_to_disease (disease->env, disease))	422	if (disease->env && is_susceptible_to_disease (disease->env, disease))
202	do_symptoms (disease);	423	do_symptoms (disease);
203		424
204	return 0;	425	return 0;
205	}	426	}
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		427
286	/* check to see if an object is infectable:	428	/* check to see if an object is infectable:
287	* objects with immunity aren't infectable.	429	* objects with immunity aren't infectable.
288	* objects already infected aren't infectable.	430	* objects already infected aren't infectable.
289	* dead objects aren't infectable.	431	* dead objects aren't infectable.
…		…
294	{	436	{
295	object *tmp;	437	object *tmp;
296	object *new_disease;	438	object *new_disease;
297		439
298	/* don't infect inanimate objects */	440	/* don't infect inanimate objects */
299	if (!QUERY_FLAG (victim, FLAG_MONSTER) && !(victim->type == PLAYER))	441	if (!victim->flag [FLAG_MONSTER] && !(victim->type == PLAYER))
300	return 0;	442	return 0;
301		443
302	/* check and see if victim can catch disease: diseases	444	/* check and see if victim can catch disease: diseases
303	* are specific	445	* are specific
304	*/	446	*/
…		…
308	/* roll the dice on infection before doing the inventory check! */	450	/* roll the dice on infection before doing the inventory check! */
309	if (!force && (random_roll (0, 126, victim, PREFER_HIGH) >= disease->stats.wc))	451	if (!force && (random_roll (0, 126, victim, PREFER_HIGH) >= disease->stats.wc))
310	return 0;	452	return 0;
311		453
312	/* do an immunity check */	454	/* do an immunity check */
313	if (victim->head)
314	tmp = victim->head->inv;
315	else
316	tmp = victim->inv;
317		455
318	/* There used to (IMO) be a flaw in the below - it used to be the case	456	/* There used to (IMO) be a flaw in the below - it used to be the case
319	* that if level check was done for both immunity and disease. This could	457	* that if level check was done for both immunity and disease. This could
320	* result in a person with multiple afflictions of the same disease	458	* 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	459	* (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	460	* they were cast in that same order. Instead, change it so that
323	* if you diseased, you can't get diseased more.	461	* if you diseased, you can't get diseased more.
324	*/	462	*/
325		463
326	for ( /* tmp initialised in if, above */ ; tmp; tmp = tmp->below)	464	for (tmp = victim->head_ ()->inv; tmp; tmp = tmp->below)
327	{	465	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! */	466	return 0; /* Immune! */
330	else if (tmp->type == DISEASE && tmp->name == disease->name)	467	else if (tmp->type == DISEASE && tmp->name == disease->name)
331	return 0; /* already diseased */	468	return 0; /* already diseased */
332	}
333		469
334	/* If we've gotten this far, go ahead and infect the victim. */	470	/* If we've gotten this far, go ahead and infect the victim. */
		471
335	new_disease = disease->clone ();	472	new_disease = disease->clone ();
		473
336	new_disease->stats.food = disease->stats.maxgrace;	474	new_disease->stats.food = disease->stats.maxgrace;
337	new_disease->value = disease->stats.maxhp;	475	new_disease->value = disease->stats.maxhp;
338	new_disease->stats.wc -= disease->last_grace; /* self-limiting factor */	476	new_disease->stats.wc -= disease->last_grace; /* self-limiting factor */
339		477
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'	478	/* This appears to be a horrible case of overloading 'NO_PASS'
368	* for meaning in the diseases.	479	* for meaning in the diseases.
369	*/	480	*/
370	new_disease->move_block = 0;	481	new_disease->move_block = 0;
		482
		483	// insert before setting the owner
		484	victim->head_ ()->insert (new_disease);
		485
		486	if (disease->owner)
		487	new_disease->set_owner (disease->owner);
		488	else if (object *pl = disease->in_player ())
		489	/* for diseases which are passed by hitting, set owner and skill */
		490	new_disease->set_owner (pl);
		491
371	if (new_disease->owner && new_disease->owner->type == PLAYER)	492	if (new_disease->owner && new_disease->owner->type == PLAYER)
372	{	493	{
373	char buf[128];	494	const char *buf;
374		495
375	/* if the disease has a title, it has a special infection message	496	/* if the disease has a title, it has a special infection message
376	* This messages is printed in the form MESSAGE victim	497	* This messages is printed in the form MESSAGE victim
377	*/	498	*/
378	if (new_disease->title)	499	if (new_disease->title)
379	sprintf (buf, "%s %s!!", &disease->title, &victim->name);	500	buf = format ("%s %s!!", &disease->title, &victim->name);
380	else	501	else
381	sprintf (buf, "You infect %s with your disease, %s!", &victim->name, &new_disease->name);	502	buf = format ("You infect %s with your disease, %s!", &victim->name, &new_disease->name);
382		503
383	if (victim->type == PLAYER)	504	if (victim->type == PLAYER)
384	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, new_disease->owner, buf);	505	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, new_disease->owner, buf);
385	else	506	else
386	new_draw_info (0, 4, new_disease->owner, buf);	507	new_draw_info (0, 4, new_disease->owner, buf);
387	}	508	}
		509
388	if (victim->type == PLAYER)	510	if (victim->type == PLAYER)
389	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, "You suddenly feel ill.");	511	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, "You suddenly feel ill.");
390		512
391	return 1;	513	return 1;
392
393	}	514	}
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		515
554	/* make the symptom do the nasty things it does */	516	/* make the symptom do the nasty things it does */
555
556	int	517	int
557	move_symptom (object *symptom)	518	move_symptom (object *symptom)
558	{	519	{
559	object *victim = symptom->env;	520	object *victim = symptom->env;
560	object *new_ob;
561	int sp_reduce;
562		521
563	if (victim == NULL \|\| victim->map == NULL)	522	if (!victim \|\| !victim->map)
564	{ /* outside a monster/player, die immediately */	523	{ /* outside a monster/player, die immediately */
565	symptom->destroy ();	524	symptom->destroy ();
566	return 0;	525	return 0;
567	}	526	}
568
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		527
580	/* create the symptom "other arch" object and drop it here	528	/* create the symptom "other arch" object and drop it here
581	* under every part of the monster	529	* under every part of the monster
582	* The victim may well have died.	530	* The victim may well have died.
583	*/	531	*/
584
585	if (victim->map == NULL)	532	if (victim->map)
586	return 0;	533	{
		534	victim->play_sound (symptom->sound);
		535
587	if (symptom->other_arch)	536	if (symptom->other_arch)
588	{	537	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	{	538	{
596	new_ob = arch_to_object (symptom->other_arch);	539	object *new_ob = symptom->other_arch->instance ();
597	new_ob->x = tmp->x;	540	new_ob->x = tmp->x;
598	new_ob->y = tmp->y;	541	new_ob->y = tmp->y;
599	new_ob->map = victim->map;	542	new_ob->map = victim->map;
600	insert_ob_in_map (new_ob, victim->map, victim, 0);	543	insert_ob_in_map (new_ob, victim->map, victim, 0);
601	}	544	}
602	}	545	}
		546
		547	int damage =
		548	symptom->stats.dam > 0
		549	? symptom->stats.dam
		550	: max (1, victim->stats.maxhp * -symptom->stats.dam / 100);
		551
		552	hit_player (victim, damage, symptom, symptom->attacktype, 1);
		553
		554	int sp_reduce =
		555	symptom->stats.maxsp > 0
		556	? symptom->stats.maxsp
		557	: max (1, victim->stats.maxsp * -symptom->stats.maxsp / 100);
		558
		559	victim->stats.sp = max (0, victim->stats.sp - sp_reduce);
		560
603	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, symptom->msg);	561	new_draw_info (NDI_UNIQUE \| NDI_RED, 0, victim, symptom->msg);
604		562
605	return 1;	563	return 1;
606	}	564	}
607		565
…		…
616	infect_object (victim, disease, 0);	574	infect_object (victim, disease, 0);
617		575
618	return 1;	576	return 1;
619	}	577	}
620		578
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" */	579	/* do the cure disease stuff, from the spell "cure disease" */
633	int	580	int
634	cure_disease (object sufferer, object caster)	581	cure_disease (object sufferer, object caster, object *spell)
635	{	582	{
636	object disease, next;	583	object disease, next;
637	int casting_level;
638	int cure = 0;	584	int cure = 0;
639		585
640	if (caster)
641	casting_level = caster->level;
642	else
643	casting_level = 1000; /* if null caster, CURE all. */	586	int casting_level = caster ? caster->level : 1000; /* if null caster, CURE all. */
644		587
645	for (disease = sufferer->inv; disease; disease = next)	588	for (disease = sufferer->inv; disease; disease = next)
646	{	589	{
647	next = disease->below;	590	next = disease->below;
648		591
…		…
656	if ((casting_level >= disease->level) \|\| (!(random_roll (0, (disease->level - casting_level - 1), caster, PREFER_LOW))))	599	if ((casting_level >= disease->level) \|\| (!(random_roll (0, (disease->level - casting_level - 1), caster, PREFER_LOW))))
657	{	600	{
658	remove_symptoms (disease);	601	remove_symptoms (disease);
659	cure = 1;	602	cure = 1;
660		603
661	if (caster)	604	if (caster && spell)
662	change_exp (caster, disease->stats.exp, caster->chosen_skill ? caster->chosen_skill->skill : (const char *) 0, 0);	605	change_exp (caster, disease->stats.exp, spell->skill, SK_EXP_SKILL_ONLY);
663		606
664	disease->destroy ();	607	disease->destroy ();
665	}	608	}
666	}	609	}
667	}	610	}
…		…
676	}	619	}
677		620
678	return 1;	621	return 1;
679	}	622	}
680		623
		624	#if 0 // unused, but seems interesting
681	/* reduces disease progression: reduce_symptoms	625	/* reduces disease progression: reduce_symptoms
682	* return true if we actually reduce a disease.	626	* return true if we actually reduce a disease.
683	*/	627	*/
684		628	static int
685	int
686	reduce_symptoms (object *sufferer, int reduction)	629	reduce_symptoms (object *sufferer, int reduction)
687	{	630	{
688	object *walk;	631	object *walk;
689	int success = 0;	632	int success = 0;
690		633
…		…
693	if (walk->type == SYMPTOM)	636	if (walk->type == SYMPTOM)
694	{	637	{
695	if (walk->value > 0)	638	if (walk->value > 0)
696	{	639	{
697	success = 1;	640	success = 1;
698	walk->value = MAX (0, walk->value - 2 * reduction);	641	walk->value = max (0, walk->value - 2 * reduction);
699	/* give the disease time to modify this symptom,	642	/* give the disease time to modify this symptom,
700	* and reduce its severity. */	643	* and reduce its severity. */
701	walk->speed_left = 0;	644	walk->speed_left = 0;
702	}	645	}
703	}	646	}
704	}	647	}
		648
705	if (success)	649	if (success)
706	new_draw_info (NDI_UNIQUE, 0, sufferer, "Your illness seems less severe.");	650	new_draw_info (NDI_UNIQUE, 0, sufferer, "Your illness seems less severe.");
		651
707	return success;	652	return success;
708	}	653	}
		654	#endif

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Comparing deliantra/server/server/disease.C (file contents): Revision 1.28 by root, Tue Jul 10 05:51:38 2007 UTC vs. Revision 1.68 by root, Sun May 1 16:58:17 2011 UTC

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Comparing deliantra/server/server/disease.C (file contents):
Revision 1.28 by root, Tue Jul 10 05:51:38 2007 UTC vs.
Revision 1.68 by root, Sun May 1 16:58:17 2011 UTC