[ViewVC] Diff of: cvs/deliantra/server/server/spell

Comparing deliantra/server/server/spell_util.C (file contents):
Revision 1.70 by root, Sun May 4 18:24:11 2008 UTC vs.
Revision 1.99 by root, Mon Oct 12 14:00:59 2009 UTC

…		…
1	/*	1	/*
2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*	3	*
4	* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Deliantra team	4	* Copyright (©) 2005,2006,2007,2008,2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	* Copyright (©) 2001,2007 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2001,2007 Mark Wedel & Crossfire Development Team
6	* Copyright (©) 1992,2007 Frank Tore Johansen	6	* Copyright (©) 1992,2007 Frank Tore Johansen
7	*	7	*
8	* Deliantra 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 <support@deliantra.net>	22	* The authors can be reached via e-mail to <support@deliantra.net>
22	*/	23	*/
23		24
24	#include <global.h>	25	#include <global.h>
33	/* This returns a random spell from 'ob'. If skill is set, then	34	/* This returns a random spell from 'ob'. If skill is set, then
34	* the spell must be of this skill, it can be NULL in which case all	35	* the spell must be of this skill, it can be NULL in which case all
35	* matching spells are used.	36	* matching spells are used.
36	*/	37	*/
37	object *	38	object *
38	find_random_spell_in_ob (object ob, const char skill)	39	find_random_spell_in_ob (object *ob, shstr_cmp skill)
39	{	40	{
40	int k = 0, s;	41	int k = 0, s;
41	object *tmp;
42		42
43	for (tmp = ob->inv; tmp; tmp = tmp->below)	43	for (object *tmp = ob->inv; tmp; tmp = tmp->below)
44	if (tmp->type == SPELL && (!skill \|\| tmp->skill == skill))	44	if (tmp->type == SPELL && (!skill \|\| tmp->skill == skill))
45	k++;	45	k++;
46		46
47	/* No spells, no need to progess further */	47	/* No spells, no need to progess further */
48	if (!k)	48	if (!k)
49	return NULL;	49	return NULL;
50		50
51	s = RANDOM () % k;	51	s = rndm (k);
52		52
53	for (tmp = ob->inv; tmp; tmp = tmp->below)	53	for (object *tmp = ob->inv; tmp; tmp = tmp->below)
54	if (tmp->type == SPELL && (!skill \|\| tmp->skill == skill))	54	if (tmp->type == SPELL && (!skill \|\| tmp->skill == skill))
55	{
56	if (!s)	55	if (!s)
57	return tmp;	56	return tmp;
58	else	57	else
59	s--;	58	s--;
60	}	59
61	/* Should never get here, but just in case */	60	/* Should never get here, but just in case */
62	return NULL;	61	return 0;
63	}	62	}
64		63
65	/* Relatively simple function that gets used a lot.	64	/* Relatively simple function that gets used a lot.
66	* Basically, it sets up the skill pointer for the spell being	65	* Basically, it sets up the skill pointer for the spell being
67	* cast. If op is really casting the spell, then the skill	66	* cast. If op is really casting the spell, then the skill
…		…
87	{	86	{
88	if (spob->other_arch)	87	if (spob->other_arch)
89	map->insert (arch_to_object (spob->other_arch), x, y, originator);	88	map->insert (arch_to_object (spob->other_arch), x, y, originator);
90	}	89	}
91		90
92	/*	91	static int
93	* This function takes a caster and spell and presents the	92	attuned_bonus (object caster, object spell, int level)
94	* effective level the caster needs to be to cast the spell.
95	* basically, it just adjusts the spell->level with attuned/repelled
96	* spellpaths. Was called path_level_mod.
97	*
98	* caster is person casting the spell.
99	* spell is the spell object.
100	* Returns modified level.
101	*/
102	int
103	min_casting_level (object caster, object spell)
104	{	93	{
105	if (caster->path_denied & spell->path_attuned)	94	// compute the attuned/repelled bonus
106	return 1;	95	// attuned only increases up to 2 times the original level (i.e. bonus <= level) */
107		96	// repell has no such quarrels
108	int new_level = spell->level	97	return (caster->path_attuned & spell->path_attuned ? min (level, +ATTUNE_REPELL) : 0)
109	+ (caster->path_repelled & spell->path_attuned ? +8 : 0)	98	+ (caster->path_repelled & spell->path_attuned ? -ATTUNE_REPELL : 0);
110	+ (caster->path_attuned & spell->path_attuned ? -8 : 0);
111
112	return max (1, new_level);
113	}	99	}
114		100
115	/* This function returns the effective level the spell	101	/* This function returns the effective level the spell
116	* is being cast at.	102	* is being cast at.
117	* Note that I changed the repelled/attuned bonus to 2 from 5.
118	* This is because the new code compares casting_level against
119	* min_caster_level, so the difference is effectively 4
120	*/	103	*/
121	int	104	int
122	caster_level (object caster, object spell)	105	casting_level (object caster, object spell)
123	{	106	{
124	int level = caster->level;	107	int level = caster->level;
125		108
126	/* if a rod is fired by a player, take the use_magic_item skill in consideration. */	109	/* if a rod is fired by a player, take the use_magic_item skill in consideration. */
127	if (caster->type == ROD && caster->env && caster->env->type == PLAYER)	110	if (caster->type == ROD && caster->env && caster->env->type == PLAYER)
…		…
129	object *skill = find_skill_by_number (caster->env, SK_USE_MAGIC_ITEM);	112	object *skill = find_skill_by_number (caster->env, SK_USE_MAGIC_ITEM);
130	int sk_level = skill ? skill->level : 1;	113	int sk_level = skill ? skill->level : 1;
131		114
132	level = min (level, sk_level + level / 10 + 1);	115	level = min (level, sk_level + level / 10 + 1);
133	}	116	}
134	else if (caster->type == PLAYER && spell->skill) /* If this is a player, try to find the matching skill */	117	else if (caster->type == PLAYER) /* If this is a player, try to find the matching skill */
135	for (int i = 0; i < NUM_SKILLS; i++)	118	if (object *skill = caster->contr->find_skill (spell->skill))
136	if (caster->contr->last_skill_ob[i] && caster->contr->last_skill_ob[i]->skill == spell->skill)	119	level = skill->level;
137	{
138	level = caster->contr->last_skill_ob[i]->level;
139	break;
140	}
141		120
142	/* Got valid caster level. Now adjust for attunement */	121	int bonus = attuned_bonus (caster, spell, level);
143	level += caster->path_repelled & spell->path_attuned ? -8 : 0;	122
144	level += caster->path_attuned & spell->path_attuned ? +8 : 0;	123	level += bonus;
		124
		125	// now scale the effective level from the startinglevel..100 range to 1..100
		126	if (level < 100)
		127	level = lerp (level, (int)spell->level, 100, 1, 100);
145		128
146	/* Always make this at least 1. If this is zero, we get divide by zero	129	/* Always make this at least 1. If this is zero, we get divide by zero
147	* errors in various places.	130	* errors in various places.
148	*/	131	*/
149	return max (level, 1);	132	return clamp (level, 1, settings.max_level);
150	}	133	}
151		134
152	/* The following function scales the spellpoint cost of	135	/* The following function scales the spellpoint cost of
153	* a spell by it's increased effectiveness. Some of the	136	* a spell by it's increased effectiveness. Some of the
154	* lower level spells become incredibly vicious at high	137	* lower level spells become incredibly vicious at high
…		…
158	* caster is what is casting the spell, can be op.	141	* caster is what is casting the spell, can be op.
159	* spell is the spell object.	142	* spell is the spell object.
160	* Note that it is now possible for a spell to cost both grace and	143	* Note that it is now possible for a spell to cost both grace and
161	* mana. In that case, we return which ever value is higher.	144	* mana. In that case, we return which ever value is higher.
162	*/	145	*/
163
164	sint16	146	sint16
165	SP_level_spellpoint_cost (object caster, object spell, int flags)	147	SP_level_spellpoint_cost (object caster, object spell, int flags)
166	{	148	{
167	int sp, grace, level = caster_level (caster, spell);	149	int sp, grace, level = casting_level (caster, spell);
168		150
169	if (settings.spellpoint_level_depend == TRUE)	151	if (settings.spellpoint_level_depend == TRUE)
170	{	152	{
171	if (spell->stats.sp && spell->stats.maxsp)	153	if (spell->stats.sp && spell->stats.maxsp)
172	{	154	{
…		…
212	LOG (llevError, "SP_level_spellpoint_cost: Unknown flags passed: %d\n", flags);	194	LOG (llevError, "SP_level_spellpoint_cost: Unknown flags passed: %d\n", flags);
213	return 0;	195	return 0;
214	}	196	}
215	}	197	}
216		198
		199	/*
		200	* Return the effective casting level of the spell.
		201	* To make spells independent of their starting level, this function
		202	* scales the range spellstartlevel .. 100 into the range 1..100
		203	*/
		204	static int
		205	SP_casting_level (object caster, object spell)
		206	{
		207	return casting_level (caster, spell);
		208	}
		209
217	/* SP_level_dam_adjust: Returns adjusted damage based on the caster.	210	/* SP_level_dam_adjust: Returns adjusted damage based on the caster.
218	* spob is the spell we are adjusting.	211	* spob is the spell we are adjusting.
219	*/	212	*/
220	int	213	int
221	SP_level_dam_adjust (object caster, object spob)	214	SP_level_dam_adjust (object caster, object spob)
222	{	215	{
223	if (!spob->dam_modifier)	216	if (!spob->dam_modifier)
224	return 0;	217	return 0;
225		218
226	int level = caster_level (caster, spob);
227	return max (0, level - min_casting_level (caster, spob)) / spob->dam_modifier;	219	return SP_casting_level (caster, spob) / spob->dam_modifier;
228	}	220	}
229		221
230	/* Adjust the strength of the spell based on level.	222	/* Adjust the strength of the spell based on level.
231	* This is basically the same as SP_level_dam_adjust above,	223	* This is basically the same as SP_level_dam_adjust above,
232	* but instead looks at the level_modifier value.	224	* but instead looks at the level_modifier value.
…		…
235	SP_level_duration_adjust (object caster, object spob)	227	SP_level_duration_adjust (object caster, object spob)
236	{	228	{
237	if (!spob->duration_modifier)	229	if (!spob->duration_modifier)
238	return 0;	230	return 0;
239		231
240	int level = caster_level (caster, spob);
241	return max (0, level - min_casting_level (caster, spob)) / spob->duration_modifier;	232	return SP_casting_level (caster, spob) / spob->duration_modifier;
242	}	233	}
243		234
244	/* Adjust the strength of the spell based on level.	235	/* Adjust the strength of the spell based on level.
245	* This is basically the same as SP_level_dam_adjust above,	236	* This is basically the same as SP_level_dam_adjust above,
246	* but instead looks at the level_modifier value.	237	* but instead looks at the level_modifier value.
…		…
249	SP_level_range_adjust (object caster, object spob)	240	SP_level_range_adjust (object caster, object spob)
250	{	241	{
251	if (!spob->range_modifier)	242	if (!spob->range_modifier)
252	return 0;	243	return 0;
253		244
254	int level = caster_level (caster, spob);
255	return (level - min_casting_level (caster, spob)) / spob->range_modifier;	245	return SP_casting_level (caster, spob) / spob->range_modifier;
256	}	246	}
257		247
258	/* Checks to see if player knows the spell. If the name is the same	248	/* Checks to see if player knows the spell. If the name is the same
259	* as an existing spell, we presume they know it.	249	* as an existing spell, we presume they know it.
260	* returns 1 if they know the spell, 0 if they don't.	250	* returns 1 if they know the spell, 0 if they don't.
261	*/	251	*/
262	object *	252	object *
263	check_spell_known (object op, const char name)	253	check_spell_known (object *op, shstr_cmp name)
264	{	254	{
265	object *spop;	255	object *spop;
266		256
267	for (spop = op->inv; spop; spop = spop->below)	257	for (spop = op->inv; spop; spop = spop->below)
268	if (spop->type == SPELL && !strcmp (spop->name, name))	258	if (spop->type == SPELL && spop->name == name)
269	return spop;	259	return spop;
270		260
271	return NULL;	261	return 0;
272	}	262	}
273
274		263
275	/*	264	/*
276	* Look at object 'op' and see if they know the spell	265	* Look at object 'op' and see if they know the spell
277	* spname. This is pretty close to check_spell_known	266	* spname. This is pretty close to check_spell_known
278	* above, but it uses a looser matching mechanism.	267	* above, but it uses a looser matching mechanism.
279	* returns the matching spell object, or NULL.	268	* returns the matching spell object, or NULL.
280	* If we match multiple spells but don't get an	269	* If we match multiple spells but don't get an
281	* exact match, we also return NULL.	270	* exact match, we also return NULL.
282	*/	271	*/
283
284	object *	272	object *
285	lookup_spell_by_name (object op, const char spname)	273	lookup_spell_by_name (object op, const char spname)
286	{	274	{
287	object spob1 = NULL, spob2 = NULL, *spob;	275	object spob1 = 0, spob2 = 0;
288	int nummatch = 0;	276	int nummatch = 0;
289		277
290	if (spname == NULL)	278	if (!spname)
291	return NULL;	279	return 0;
292		280
293	/* Try to find the spell. We store the results in spob1	281	/* Try to find the spell. We store the results in spob1
294	* and spob2 - spob1 is only taking the length of	282	* and spob2 - spob1 is only taking the length of
295	* the past spname, spob2 uses the length of the spell name.	283	* the past spname, spob2 uses the length of the spell name.
296	*/	284	*/
297	for (spob = op->inv; spob; spob = spob->below)	285	for (object *spob = op->inv; spob; spob = spob->below)
298	{	286	{
299	if (spob->type == SPELL)	287	if (spob->type == SPELL)
300	{	288	{
		289	// TODO: WTF?
301	if (!strncmp (spob->name, spname, strlen (spname)))	290	if (!strncmp (spob->name, spname, strlen (spname)))
302	{	291	{
303	nummatch++;	292	nummatch++;
304	spob1 = spob;	293	spob1 = spob;
305	}	294	}
…		…
310	* fall into this category). It shouldn't be hard to	299	* fall into this category). It shouldn't be hard to
311	* make sure spell names don't overlap in that fashion.	300	* make sure spell names don't overlap in that fashion.
312	*/	301	*/
313	if (spob2)	302	if (spob2)
314	LOG (llevError, "Found multiple spells with overlapping base names: %s, %s\n", &spob2->name, &spob->name);	303	LOG (llevError, "Found multiple spells with overlapping base names: %s, %s\n", &spob2->name, &spob->name);
		304
315	spob2 = spob;	305	spob2 = spob;
316	}	306	}
317	}	307	}
318	}	308	}
319	/* if we have best match, return it. Otherwise, if we have one match	309	/* if we have best match, return it. Otherwise, if we have one match
320	* on the loser match, return that, otehrwise null	310	* on the loser match, return that, otehrwise null
321	*/	311	*/
322	if (spob2)	312	if (spob2)
323	return spob2;	313	return spob2;
		314
324	if (spob1 && nummatch == 1)	315	if (spob1 && nummatch == 1)
325	return spob1;	316	return spob1;
		317
326	return NULL;	318	return NULL;
327	}	319	}
328		320
329	/* reflwall - decides weither the (spell-)object sp_op will	321	/* reflwall - decides weither the (spell-)object sp_op will
330	* be reflected from the given mapsquare. Returns 1 if true.	322	* be reflected from the given mapsquare. Returns 1 if true.
…		…
334	* eg, updated for tiled maps.	326	* eg, updated for tiled maps.
335	*/	327	*/
336	int	328	int
337	reflwall (maptile m, int x, int y, object sp_op)	329	reflwall (maptile m, int x, int y, object sp_op)
338	{	330	{
339	object *op;
340
341	if (OUT_OF_REAL_MAP (m, x, y))	331	if (OUT_OF_REAL_MAP (m, x, y))
342	return 0;	332	return 0;
		333
343	for (op = GET_MAP_OB (m, x, y); op != NULL; op = op->above)	334	for (object *op = GET_MAP_OB (m, x, y); op; op = op->above)
344	if (QUERY_FLAG (op, FLAG_REFL_SPELL)	335	if (QUERY_FLAG (op, FLAG_REFL_SPELL)
345	&& (!QUERY_FLAG (op, FLAG_ALIVE)	336	&& (!QUERY_FLAG (op, FLAG_ALIVE)
346	\|\| (rndm (0, 99)) < 90 - (sp_op->level / 10)))	337	\|\| (rndm (0, 99)) < 90 - (sp_op->level / 10)))
347	return 1;	338	return 1;
348		339
…		…
378	dir ? 0 : INS_BELOW_ORIGINATOR);	369	dir ? 0 : INS_BELOW_ORIGINATOR);
379		370
380	return dir;	371	return dir;
381	}	372	}
382		373
		374	static bool
		375	mergable_owner (object o1, object o2)
		376	{
		377	if (o1 == o2)
		378	return 1;
		379
		380	if (!o1 \|\| !o2)
		381	return 0;
		382
		383	if (o1->flag [FLAG_FRIENDLY] != o1->flag [FLAG_FRIENDLY])
		384	return 0;
		385
		386	if (o1->is_player () \|\| o2->is_player ())
		387	return 0;
		388
		389	return 1;
		390	}
		391
383	/* Returns true if it is ok to put spell *op on the space/may provided.	392	/* Returns true if it is ok to put spell *op on the space/may provided.
384	* immune_stop is basically the attacktype of the spell (why	393	* immune_stop is basically the attacktype of the spell (why
385	* passed as a different value, not sure of). If immune_stop	394	* passed as a different value, not sure of). If immune_stop
386	* has the AT_MAGIC bit set, and there is a counterwall	395	* has the AT_MAGIC bit set, and there is a counterwall
387	* on the space, the object doesn't get placed. if immune stop	396	* on the space, the object doesn't get placed. if immune stop
388	* does not have AT_MAGIC, then counterwalls do not effect the spell.	397	* does not have AT_MAGIC, then counterwalls do not effect the spell.
389	*
390	*/	398	*/
391	int	399	int
392	ok_to_put_more (maptile m, sint16 x, sint16 y, object op, int immune_stop)	400	ok_to_put_more (maptile m, sint16 x, sint16 y, object op, int immune_stop)
393	{	401	{
394	if (!xy_normalise (m, x, y))	402	if (!xy_normalise (m, x, y))
395	return 0;	403	return 0;
396		404
397	mapspace &ms = m->at (x, y);	405	mapspace &ms = m->at (x, y);
		406	ms.update ();
398		407
399	if (OB_TYPE_MOVE_BLOCK (op, ms.move_block))	408	if (OB_TYPE_MOVE_BLOCK (op, ms.move_block))
400	return 0;	409	return 0;
		410
		411	int max_effects = 5; // max. number of similar spells per mapspace
401		412
402	for (object *tmp = ms.bot; tmp; tmp = tmp->above)	413	for (object *tmp = ms.bot; tmp; tmp = tmp->above)
403	{	414	{
404	/* If there is a counterspell on the space, and this	415	/* If there is a counterspell on the space, and this
405	* object is using magic, don't progress. I believe we could	416	* object is using magic, don't progress. I believe we could
…		…
424	// (and those shouldn't go away from	435	// (and those shouldn't go away from
425	// sanctuary) see also: permanent lava	436	// sanctuary) see also: permanent lava
426	&& (immune_stop & AT_MAGIC))	437	&& (immune_stop & AT_MAGIC))
427	return 0;	438	return 0;
428		439
429	/* This is to prevent 'out of control' spells. Basically, this
430	* limits one spell effect per space per spell. This is definately
431	* needed for performance reasons, and just for playability I believe.
432	* there are no such things as multispaced spells right now, so
433	* we don't need to worry about the head.
434	*/
435	if ((tmp->stats.maxhp == op->stats.maxhp) && (tmp->type == op->type) && (tmp->subtype == op->subtype))
436	return 0;
437
438	/*
439	* Combine similar spell effects into one spell effect. Needed for
440	* performance reasons with meteor swarm and the like, but also for
441	* playability reasons.
442	*/
443	if (tmp->arch == op->arch /* no harm if not comparing by name here */
444	&& tmp->type == op->type	440	if (tmp->type == op->type)
445	&& tmp->subtype == op->subtype
446	&& tmp->owner == op->owner
447	&& ((tmp->subtype == SP_EXPLOSION) \|\| (tmp->subtype == SP_CONE && tmp->stats.sp == op->stats.sp)))
448	{	441	{
449	tmp->stats.dam = MAX (tmp->stats.dam, op->stats.dam);	442	if (tmp->subtype == op->subtype
450	tmp->range = MAX (tmp->range, op->range);	443	&& tmp->arch == op->arch /* no harm if not comparing by name here */)
451	tmp->duration = MAX (tmp->duration, op->duration);	444	{
		445	/* This is to prevent 'out of control' spells. Basically, this
		446	* limits one spell effect per space per spell. This is definately
		447	* needed for performance reasons, and just for playability I believe.
		448	* there are no such things as multispaced spells right now, so
		449	* we don't need to worry about the head.
		450	*/
		451	if (tmp->stats.maxhp == op->stats.maxhp)
		452	return 0;
		453
		454	/*
		455	* Combine similar spell effects into one spell effect. Needed for
		456	* performance reasons with meteor swarm and the like, but also for
		457	* playability reasons.
		458	*/
		459	if (((tmp->subtype == SP_EXPLOSION) \|\| (tmp->subtype == SP_CONE && tmp->stats.sp == op->stats.sp)))
		460	if (mergable_owner (tmp, op))
		461	{
		462	// if same owner, then combine, but reduce advantage of multiple spells
		463	max_it (tmp->stats.dam, op->stats.dam);
		464	max_it (tmp->range , op->range);
		465	max_it (tmp->duration , op->duration);
		466	return 0;
		467	}
		468	}
		469
		470	// if there are too many spell effects on this space,
		471	// then don't allow more of them, for performance reasons.
		472	if (tmp->type == SPELL_EFFECT
		473	&& !--max_effects)
452	return 0;	474	return 0;
453	}	475	}
454		476
455	/* Perhaps we should also put checks in for no magic and unholy	477	/* Perhaps we should also put checks in for no magic and unholy
456	* ground to prevent it from moving along?	478	* ground to prevent it from moving along?
457	*/	479	*/
…		…
472	* returns 0 on failure, 1 on success.	494	* returns 0 on failure, 1 on success.
473	*/	495	*/
474	int	496	int
475	fire_arch_from_position (object op, object caster, sint16 x, sint16 y, int dir, object *spell)	497	fire_arch_from_position (object op, object caster, sint16 x, sint16 y, int dir, object *spell)
476	{	498	{
477	object *tmp;
478	int mflags;
479	maptile *m;
480
481	if (spell->other_arch == NULL)	499	if (!spell->other_arch)
482	return 0;	500	return 0;
483		501
484	m = op->map;	502	object *tmp = spell->other_arch->instance ();
485	mflags = get_map_flags (m, &m, x, y, &x, &y);
486	if (mflags & P_OUT_OF_MAP)
487	{
488	return 0;
489	}
490		503
491	tmp = arch_to_object (spell->other_arch);	504	if (!tmp)
492
493	if (tmp == NULL)
494	return 0;	505	return 0;
495
496	if (OB_TYPE_MOVE_BLOCK (tmp, GET_MAP_MOVE_BLOCK (m, x, y)))
497	{
498	new_draw_info (NDI_UNIQUE, 0, op, "You can't cast the spell on top of a wall!\n");
499	tmp->destroy ();
500	return 0;
501	}
502		506
503	tmp->stats.dam = spell->stats.dam + SP_level_dam_adjust (caster, spell);	507	tmp->stats.dam = spell->stats.dam + SP_level_dam_adjust (caster, spell);
504	tmp->duration = spell->duration + SP_level_duration_adjust (caster, spell);	508	tmp->duration = spell->duration + SP_level_duration_adjust (caster, spell);
505	/* code in time.c uses food for some things, duration for others */	509	/* code in time.c uses food for some things, duration for others */
506	tmp->stats.food = tmp->duration;	510	tmp->stats.food = tmp->duration;
507	tmp->range = spell->range + SP_level_range_adjust (caster, spell);	511	tmp->range = spell->range + SP_level_range_adjust (caster, spell);
508	tmp->attacktype = spell->attacktype;	512	tmp->attacktype = spell->attacktype;
509	tmp->x = x;
510	tmp->y = y;
511	tmp->direction = dir;	513	tmp->direction = dir;
512	if (op->owner != NULL)
513	tmp->set_owner (op);	514	tmp->set_owner (op);
514	else
515	tmp->set_owner (op);
516	tmp->level = caster_level (caster, spell);	515	tmp->level = casting_level (caster, spell);
517	set_spell_skill (op, caster, spell, tmp);	516	set_spell_skill (op, caster, spell, tmp);
518		517
519	/* needed for AT_HOLYWORD,AT_GODPOWER stuff */	518	/* needed for AT_HOLYWORD,AT_GODPOWER stuff */
520	if (tmp->attacktype & AT_HOLYWORD \|\| tmp->attacktype & AT_GODPOWER)	519	if (tmp->attacktype & AT_HOLYWORD \|\| tmp->attacktype & AT_GODPOWER)
521	{
522	if (!tailor_god_spell (tmp, op))	520	if (!tailor_god_spell (tmp, op))
523	return 0;	521	return 0;
524	}	522
525	if (QUERY_FLAG (tmp, FLAG_IS_TURNABLE))	523	if (QUERY_FLAG (tmp, FLAG_IS_TURNABLE))
526	SET_ANIMATION (tmp, dir);	524	SET_ANIMATION (tmp, dir);
527		525
528	if ((tmp = insert_ob_in_map (tmp, m, op, 0)))	526	if ((tmp = op->map->insert (tmp, x, y, op)))
529	move_spell_effect (tmp);	527	move_spell_effect (tmp);
530		528
531	return 1;	529	return 1;
532	}	530	}
533		531
…		…
588	if (!tmp)	586	if (!tmp)
589	tmp = op->ms ().player ();	587	tmp = op->ms ().player ();
590		588
591	return tmp;	589	return tmp;
592	}	590	}
593
594
595		591
596	/* raytrace:	592	/* raytrace:
597	* spell_find_dir(map, x, y, exclude) will search first the center square	593	* spell_find_dir(map, x, y, exclude) will search first the center square
598	* then some close squares in the given map at the given coordinates for	594	* then some close squares in the given map at the given coordinates for
599	* live objects.	595	* live objects.
…		…
602	* monsters/generators only. If not, the spell will hunt players only.	598	* monsters/generators only. If not, the spell will hunt players only.
603	* It returns the direction toward the first/closest live object if it finds	599	* It returns the direction toward the first/closest live object if it finds
604	* any, otherwise -1.	600	* any, otherwise -1.
605	* note that exclude can be NULL, in which case all bets are off.	601	* note that exclude can be NULL, in which case all bets are off.
606	*/	602	*/
607
608	int	603	int
609	spell_find_dir (maptile m, int x, int y, object exclude)	604	spell_find_dir (maptile m, int x, int y, object exclude)
610	{	605	{
611	int i, max = SIZEOFFREE;	606	int i, max = SIZEOFFREE;
612	sint16 nx, ny;	607	sint16 nx, ny;
…		…
709	* Note that this is not used by any spells (summon evil monsters	704	* Note that this is not used by any spells (summon evil monsters
710	* use to call this, but best I can tell, that spell/ability was	705	* use to call this, but best I can tell, that spell/ability was
711	* never used. This is however used by various failures on the	706	* never used. This is however used by various failures on the
712	* players part (alchemy, reincarnation, etc)	707	* players part (alchemy, reincarnation, etc)
713	*/	708	*/
714
715	int	709	int
716	summon_hostile_monsters (object op, int n, const char monstername)	710	summon_hostile_monsters (object op, int n, const char monstername)
717	{	711	{
718	int i;	712	int i;
719		713
…		…
784	{	778	{
785	SET_ANIMATION (op, ATTACKS[i].face);	779	SET_ANIMATION (op, ATTACKS[i].face);
786	}	780	}
787	}	781	}
788		782
789
790	/* prayer_failure: This is called when a player fails	783	/* prayer_failure: This is called when a player fails
791	* at casting a prayer.	784	* at casting a prayer.
792	* op is the player.	785	* op is the player.
793	* failure is basically how much grace they had.	786	* failure is basically how much grace they had.
794	* power is how much grace the spell would normally take to cast.	787	* power is how much grace the spell would normally take to cast.
795	*/	788	*/
796
797	void	789	void
798	prayer_failure (object *op, int failure, int power)	790	prayer_failure (object *op, int failure, int power)
799	{	791	{
800	const char *godname;	792	const char *godname;
801	object *tmp;	793	object *tmp;
…		…
896	}	888	}
897	}	889	}
898	}	890	}
899		891
900	int	892	int
901	cast_party_spell (object op, object caster, int dir, object spell_ob, char stringarg)	893	cast_party_spell (object op, object caster, int dir, object spell_ob, char spellparam)
902	{	894	{
903	int success;
904	object *spell;
905
906	if (!spell_ob->other_arch)	895	if (!spell_ob->other_arch)
907	{	896	{
908	LOG (llevError, "cast_party_spell: empty other arch\n");	897	LOG (llevError, "cast_party_spell: empty other arch\n");
909	return 0;	898	return 0;
910	}	899	}
911		900
912	spell = arch_to_object (spell_ob->other_arch);	901	object *spell = arch_to_object (spell_ob->other_arch);
913		902
914	/* Always cast spell on caster */	903	/* Always cast spell on caster */
915	success = cast_spell (op, caster, dir, spell, stringarg);	904	int success = cast_spell (op, caster, dir, spell, spellparam);
916		905
917	if (caster->contr->party == NULL)	906	if (!op->contr \|\| !op->contr->party)
918	{	907	{
919	spell->remove ();	908	spell->remove ();
920	return success;	909	return success;
921	}	910	}
922		911
923	for_all_players (pl)	912	for_all_players (pl)
924	if ((pl->ob->contr->party == caster->contr->party) && (on_same_map (pl->ob, caster)))	913	if ((pl->ob->contr->party == op->contr->party)
		914	&& on_same_map (pl->ob, op)
		915	&& pl->ob != op)
925	cast_spell (pl->ob, caster, pl->ob->facing, spell, stringarg);	916	cast_spell (pl->ob, caster, pl->ob->facing, spell, spellparam);
926		917
927	spell->remove ();	918	spell->remove ();
928	return success;	919	return success;
929	}	920	}
930		921
…		…
936	* same as op.	927	* same as op.
937	* dir is the direction to cast in. Note in some cases, if the spell	928	* dir is the direction to cast in. Note in some cases, if the spell
938	* is self only, dir really doesn't make a difference.	929	* is self only, dir really doesn't make a difference.
939	* spell_ob is the spell object that is being cast. From that,	930	* spell_ob is the spell object that is being cast. From that,
940	* we can determine what to do.	931	* we can determine what to do.
941	* stringarg is any options that are being used. It can be NULL. Almost	932	* spellparam is any options that are being used. It can be NULL. Almost
942	* certainly, only players will set it. It is basically used as optional	933	* certainly, only players will set it. It is basically used as optional
943	* parameters to a spell (eg, item to create, information for marking runes,	934	* parameters to a spell (eg, item to create, information for marking runes,
944	* etc.	935	* etc.
945	* returns 1 on successful cast, or 0 on error. These values should really	936	* returns 1 on successful cast, or 0 on error. These values should really
946	* be swapped, so that 0 is successful, and non zero is failure, with a code	937	* be swapped, so that 0 is successful, and non zero is failure, with a code
…		…
954	* if it is a player casting the spell (op->type == PLAYER, op == caster),	945	* if it is a player casting the spell (op->type == PLAYER, op == caster),
955	* this function will decrease the mana/grace appropriately. For other	946	* this function will decrease the mana/grace appropriately. For other
956	* objects, the caller should do what it considers appropriate.	947	* objects, the caller should do what it considers appropriate.
957	*/	948	*/
958	int	949	int
959	cast_spell (object op, object caster, int dir, object spell_ob, char stringarg)	950	cast_spell (object op, object caster, int dir, object spell_ob, char spellparam)
960	{	951	{
961	const char *godname;	952	const char *godname;
962	int success = 0, cast_level = 0;	953	int success = 0;
963	object *skill = NULL;	954	object *skill = NULL;
964		955
965	if (!spell_ob)	956	if (!spell_ob)
966	{	957	{
967	LOG (llevError, "cast_spell: null spell object passed\n");	958	LOG (llevError, "cast_spell: null spell object passed\n");
…		…
996	* need to have the right skill pointer passed, so we need to	987	* need to have the right skill pointer passed, so we need to
997	* at least process that code.	988	* at least process that code.
998	*/	989	*/
999	if (op->type == PLAYER && op == caster)	990	if (op->type == PLAYER && op == caster)
1000	{	991	{
1001	cast_level = caster_level (caster, spell_ob);
1002
1003	if (spell_ob->skill)	992	if (spell_ob->skill)
1004	{	993	{
1005	skill = find_skill_by_name (op, spell_ob->skill);	994	skill = find_skill_by_name (op, spell_ob->skill);
1006		995
1007	if (!skill)	996	if (!skill)
1008	{	997	{
1009	op->failmsg (format ("You need the skill %s to cast %s! "	998	op->failmsg (format ("You need the skill %s to cast %s! "
1010	"H<You either need to learn the skill via a skill scroll "	999	"H<You either need to learn the skill via a skill scroll "
1011	"or you need to wear a talisman or holy symbol.>",	1000	"or you need to wear a talisman or holy symbol.>",
1012	&spell_ob->skill, &spell_ob->name));	1001	&spell_ob->skill, &spell_ob->name));
1013	return 0;	1002	return 0;
1014	}	1003	}
1015		1004
1016	int casting_level = min_casting_level (op, spell_ob);	1005	const char *msg = "";
1017		1006
1018	if (casting_level > cast_level && !QUERY_FLAG (op, FLAG_WIZ))	1007	int caster_level = skill->level;
		1008
		1009	if (op->path_attuned & spell_ob->path_attuned)
		1010	{
		1011	caster_level += min (caster_level, ATTUNE_REPELL);
		1012	msg = " (attuned)";
		1013	}
		1014
		1015	if (op->path_repelled & spell_ob->path_attuned)
		1016	{
		1017	caster_level -= ATTUNE_REPELL; // negative is ok
		1018	msg = " (repelled)";
		1019	}
		1020
		1021	if (spell_ob->level > caster_level)
1019	{	1022	{
1020	op->failmsg (format ("You lack enough skill to cast that spell! "	1023	op->failmsg (format ("You lack enough skill to cast that spell! "
1021	"H<Your cast level is %d, but level %d is required. Maybe you are repelled?>",	1024	"H<Your effective cast level is %d%s, but level %d is required.>",
1022	cast_level, casting_level));	1025	caster_level, msg, spell_ob->level));
		1026	if (!op->is_wiz ())
1023	return 0;	1027	return 0;
1024	}	1028	}
1025	}	1029	}
1026		1030
1027	/* If the caster is the wiz, they don't ever fail, and don't have	1031	/* If the caster is the wiz, they don't ever fail, and don't have
1028	* to have sufficient grace/mana.	1032	* to have sufficient grace/mana.
1029	*/	1033	*/
1030	if (!QUERY_FLAG (op, FLAG_WIZ))	1034	if (!QUERY_FLAG (op, FLAG_WIZCAST))
1031	{	1035	{
1032	if (SP_level_spellpoint_cost (caster, spell_ob, SPELL_MANA) &&	1036	if (SP_level_spellpoint_cost (caster, spell_ob, SPELL_MANA) &&
1033	SP_level_spellpoint_cost (caster, spell_ob, SPELL_MANA) > op->stats.sp)	1037	SP_level_spellpoint_cost (caster, spell_ob, SPELL_MANA) > op->stats.sp)
1034	{	1038	{
1035	op->failmsg ("You don't have enough mana!");	1039	op->failmsg ("You don't have enough mana!");
…		…
1158	}	1162	}
1159		1163
1160	op->change_skill (skill); /* needed for proper exp credit */	1164	op->change_skill (skill); /* needed for proper exp credit */
1161	}	1165	}
1162		1166
1163	if (INVOKE_OBJECT (CAST_SPELL, spell_ob, ARG_OBJECT (op), ARG_OBJECT (caster), ARG_INT (dir), ARG_STRING (stringarg)))	1167	if (INVOKE_OBJECT (CAST_SPELL, spell_ob, ARG_OBJECT (op), ARG_OBJECT (caster), ARG_INT (dir), ARG_STRING (spellparam)))
1164	return RESULT_INT (0);	1168	return RESULT_INT (0);
1165		1169
1166	switch (spell_ob->subtype)	1170	switch (spell_ob->subtype)
1167	{	1171	{
1168	/* The order of case statements is same as the order they show up	1172	/* The order of case statements is same as the order they show up
1169	* in in spells.h.	1173	* in spells.h.
1170	*/	1174	*/
1171	case SP_RAISE_DEAD:	1175	case SP_RAISE_DEAD:
1172	success = cast_raise_dead_spell (op, caster, spell_ob, dir, stringarg);	1176	success = cast_raise_dead_spell (op, caster, spell_ob, dir, spellparam);
1173	break;	1177	break;
1174		1178
1175	case SP_RUNE:	1179	case SP_RUNE:
1176	success = write_rune (op, caster, spell_ob, dir, stringarg);	1180	success = write_rune (op, caster, spell_ob, dir, spellparam);
1177	break;	1181	break;
1178		1182
1179	case SP_MAKE_MARK:	1183	case SP_MAKE_MARK:
1180	success = write_mark (op, spell_ob, stringarg);	1184	success = write_mark (op, spell_ob, spellparam);
1181	break;	1185	break;
1182		1186
1183	case SP_BOLT:	1187	case SP_BOLT:
1184	success = fire_bolt (op, caster, dir, spell_ob, skill);	1188	success = fire_bolt (op, caster, dir, spell_ob, skill);
1185	break;	1189	break;
…		…
1203	case SP_SMITE:	1207	case SP_SMITE:
1204	success = cast_smite_spell (op, caster, dir, spell_ob);	1208	success = cast_smite_spell (op, caster, dir, spell_ob);
1205	break;	1209	break;
1206		1210
1207	case SP_MAGIC_MISSILE:	1211	case SP_MAGIC_MISSILE:
1208	success = fire_arch_from_position (op, caster, op->x + freearr_x[dir], op->y + freearr_y[dir], dir, spell_ob);	1212	success = fire_arch_from_position (op, caster, op->x, op->y, dir, spell_ob);
1209	break;	1213	break;
1210		1214
1211	case SP_SUMMON_GOLEM:	1215	case SP_SUMMON_GOLEM:
1212	success = summon_golem (op, caster, dir, spell_ob);	1216	success = summon_golem (op, caster, dir, spell_ob);
1213	break;	1217	break;
1214		1218
1215	case SP_DIMENSION_DOOR:	1219	case SP_DIMENSION_DOOR:
1216	/* dimension door needs the actual caster, because that is what is	1220	/* dimension door needs the actual caster, because that is what is
1217	* moved.	1221	* moved.
1218	*/	1222	*/
1219	success = dimension_door (op, caster, spell_ob, dir);	1223	success = dimension_door (op, caster, spell_ob, dir, spellparam);
1220	break;	1224	break;
1221		1225
1222	case SP_MAGIC_MAPPING:	1226	case SP_MAGIC_MAPPING:
1223	if (op->type == PLAYER)	1227	if (op->type == PLAYER)
1224	{	1228	{
…		…
1257	case SP_HEALING:	1261	case SP_HEALING:
1258	success = cast_heal (op, caster, spell_ob, dir);	1262	success = cast_heal (op, caster, spell_ob, dir);
1259	break;	1263	break;
1260		1264
1261	case SP_CREATE_FOOD:	1265	case SP_CREATE_FOOD:
1262	success = cast_create_food (op, caster, spell_ob, dir, stringarg);	1266	success = cast_create_food (op, caster, spell_ob, dir, spellparam);
1263	break;	1267	break;
1264		1268
1265	case SP_EARTH_TO_DUST:	1269	case SP_EARTH_TO_DUST:
1266	success = cast_earth_to_dust (op, caster, spell_ob);	1270	success = cast_earth_to_dust (op, caster, spell_ob);
1267	break;	1271	break;
…		…
1277	case SP_CURSE:	1281	case SP_CURSE:
1278	success = cast_curse (op, caster, spell_ob, dir);	1282	success = cast_curse (op, caster, spell_ob, dir);
1279	break;	1283	break;
1280		1284
1281	case SP_SUMMON_MONSTER:	1285	case SP_SUMMON_MONSTER:
1282	success = summon_object (op, caster, spell_ob, dir, stringarg);	1286	success = summon_object (op, caster, spell_ob, dir, spellparam);
1283	break;	1287	break;
1284		1288
1285	case SP_CHARGING:	1289	case SP_CHARGING:
1286	success = recharge (op, caster, spell_ob);	1290	success = recharge (op, caster, spell_ob);
1287	break;	1291	break;
…		…
1324	{	1328	{
1325	op->failmsg (format ("You lack the proper attunement to cast %s!", &spell_ob->name));	1329	op->failmsg (format ("You lack the proper attunement to cast %s!", &spell_ob->name));
1326	success = 0;	1330	success = 0;
1327	}	1331	}
1328	else	1332	else
1329	success = fire_arch_from_position (op, caster, op->x + freearr_x[dir], op->y + freearr_y[dir], dir, spell_ob);	1333	success = fire_arch_from_position (op, caster, op->x, op->y, dir, spell_ob);
1330	break;	1334	break;
1331		1335
1332	case SP_SWARM:	1336	case SP_SWARM:
1333	success = fire_swarm (op, caster, spell_ob, dir);	1337	success = fire_swarm (op, caster, spell_ob, dir);
1334	break;	1338	break;
…		…
1341	/* in rune.c */	1345	/* in rune.c */
1342	success = dispel_rune (op, caster, spell_ob, skill, dir);	1346	success = dispel_rune (op, caster, spell_ob, skill, dir);
1343	break;	1347	break;
1344		1348
1345	case SP_CREATE_MISSILE:	1349	case SP_CREATE_MISSILE:
1346	success = cast_create_missile (op, caster, spell_ob, dir, stringarg);	1350	success = cast_create_missile (op, caster, spell_ob, dir, spellparam);
1347	break;	1351	break;
1348		1352
1349	case SP_CONSECRATE:	1353	case SP_CONSECRATE:
1350	success = cast_consecrate (op, caster, spell_ob);	1354	success = cast_consecrate (op, caster, spell_ob);
1351	break;	1355	break;
…		…
1373	case SP_AURA:	1377	case SP_AURA:
1374	success = create_aura (op, caster, spell_ob);	1378	success = create_aura (op, caster, spell_ob);
1375	break;	1379	break;
1376		1380
1377	case SP_PARTY_SPELL:	1381	case SP_PARTY_SPELL:
1378	success = cast_party_spell (op, caster, dir, spell_ob, stringarg);	1382	success = cast_party_spell (op, caster, dir, spell_ob, spellparam);
1379	break;	1383	break;
1380		1384
1381	default:	1385	default:
1382	LOG (llevError, "cast_spell: Unhandled spell subtype %d\n", spell_ob->subtype);	1386	LOG (llevError, "cast_spell: Unhandled spell subtype %d\n", spell_ob->subtype);
1383	}	1387	}
…		…
1460	check_bullet (op);	1464	check_bullet (op);
1461	return;	1465	return;
1462	}	1466	}
1463	}	1467	}
1464		1468
1465	/* This is called by move_apply. Basically, if someone	1469	/* This is called by move_apply. Basically, if someone
1466	* moves onto a spell effect and the walk_on or fly_on flags	1470	* moves onto a spell effect and the walk_on or fly_on flags
1467	* are set, this is called. This should only be called for	1471	* are set, this is called. This should only be called for
1468	* objects of the appropraite type.	1472	* objects of the appropriate type.
1469	*/	1473	*/
1470	void	1474	void
1471	apply_spell_effect (object spell, object victim)	1475	apply_spell_effect (object spell, object victim)
1472	{	1476	{
1473	switch (spell->subtype)	1477	switch (spell->subtype)
…		…
1479		1483
1480	case SP_MAGIC_MISSILE:	1484	case SP_MAGIC_MISSILE:
1481	if (QUERY_FLAG (victim, FLAG_ALIVE))	1485	if (QUERY_FLAG (victim, FLAG_ALIVE))
1482	{	1486	{
1483	hit_player (victim, spell->stats.dam, spell, spell->attacktype, 1);	1487	hit_player (victim, spell->stats.dam, spell, spell->attacktype, 1);
1484
1485	if (!spell->destroyed ())
1486	spell->destroy ();	1488	spell->destroy ();
1487	}	1489	}
1488	break;	1490	break;
1489		1491
1490	case SP_MOVING_BALL:	1492	case SP_MOVING_BALL:
1491	if (QUERY_FLAG (victim, FLAG_ALIVE))	1493	if (QUERY_FLAG (victim, FLAG_ALIVE))
1492	hit_player (victim, spell->stats.dam, spell, spell->attacktype, 1);	1494	hit_player (victim, spell->stats.dam, spell, spell->attacktype, 1);
1493	else if (victim->materialname)	1495	else if (victim->materialname)
1494	save_throw_object (victim, spell->attacktype, spell);	1496	save_throw_object (victim, spell->attacktype, spell);
1495	break;
1496	}
1497	}
1498		1497
		1498	break;
		1499	}
		1500	}
		1501
		1502	/**
		1503	* This function will let a fireball explode at the position of
		1504	* the victim with a specific maximum level.
		1505	*/
		1506	void
		1507	create_exploding_ball_at (object *victim, int level)
		1508	{
		1509	object *ball = get_archetype (EXPLODING_FIREBALL);
		1510	ball->dam_modifier = random_roll (1, level, victim, PREFER_LOW) / 5 + 1;
		1511	ball->stats.maxhp = random_roll (1, level, victim, PREFER_LOW) / 10 + 2;
		1512	ball->insert_at (victim);
		1513	}

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Comparing deliantra/server/server/spell_util.C (file contents): Revision 1.70 by root, Sun May 4 18:24:11 2008 UTC vs. Revision 1.99 by root, Mon Oct 12 14:00:59 2009 UTC

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Comparing deliantra/server/server/spell_util.C (file contents):
Revision 1.70 by root, Sun May 4 18:24:11 2008 UTC vs.
Revision 1.99 by root, Mon Oct 12 14:00:59 2009 UTC