1 |
/* |
2 |
* This file is part of Deliantra, the Roguelike Realtime MMORPG. |
3 |
* |
4 |
* Copyright (©) 2005,2006,2007,2008,2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
5 |
* Copyright (©) 2001,2007 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 |
9 |
* it under the terms of the GNU General Public License as published by |
10 |
* the Free Software Foundation, either version 3 of the License, or |
11 |
* (at your 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 GNU General Public License |
19 |
* along with this program. If not, see <http://www.gnu.org/licenses/>. |
20 |
* |
21 |
* The authors can be reached via e-mail to <support@deliantra.net> |
22 |
*/ |
23 |
|
24 |
#include <global.h> |
25 |
#include <spells.h> |
26 |
#include <object.h> |
27 |
#include <errno.h> |
28 |
#include <sproto.h> |
29 |
#include <sounds.h> |
30 |
|
31 |
extern char *spell_mapping[]; |
32 |
|
33 |
/* 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 |
* matching spells are used. |
36 |
*/ |
37 |
object * |
38 |
find_random_spell_in_ob (object *ob, shstr_cmp skill) |
39 |
{ |
40 |
int k = 0, s; |
41 |
|
42 |
for (object *tmp = ob->inv; tmp; tmp = tmp->below) |
43 |
if (tmp->type == SPELL && (!skill || tmp->skill == skill)) |
44 |
k++; |
45 |
|
46 |
/* No spells, no need to progess further */ |
47 |
if (!k) |
48 |
return NULL; |
49 |
|
50 |
s = rndm (k); |
51 |
|
52 |
for (object *tmp = ob->inv; tmp; tmp = tmp->below) |
53 |
if (tmp->type == SPELL && (!skill || tmp->skill == skill)) |
54 |
if (!s) |
55 |
return tmp; |
56 |
else |
57 |
s--; |
58 |
|
59 |
/* Should never get here, but just in case */ |
60 |
return 0; |
61 |
} |
62 |
|
63 |
/* Relatively simple function that gets used a lot. |
64 |
* Basically, it sets up the skill pointer for the spell being |
65 |
* cast. If op is really casting the spell, then the skill |
66 |
* is whatever skill the spell requires. |
67 |
* if instead caster (rod, horn, wand, etc) is casting the skill, |
68 |
* then they get exp for the skill that you need to use for |
69 |
* that object (use magic device). |
70 |
*/ |
71 |
void |
72 |
set_spell_skill (object *op, object *caster, object *spob, object *dest) |
73 |
{ |
74 |
if (caster == op && spob->skill) |
75 |
dest->skill = spob->skill; |
76 |
else |
77 |
dest->skill = caster->skill; |
78 |
} |
79 |
|
80 |
/* pretty basic function - basically just takes |
81 |
* an object, sets the x,y, and calls insert_ob_in_map |
82 |
*/ |
83 |
void |
84 |
spell_effect (object *spob, int x, int y, maptile *map, object *originator) |
85 |
{ |
86 |
if (spob->other_arch) |
87 |
map->insert (arch_to_object (spob->other_arch), x, y, originator); |
88 |
} |
89 |
|
90 |
static int |
91 |
attuned_bonus (object *caster, object *spell, int level) |
92 |
{ |
93 |
// compute the attuned/repelled bonus |
94 |
// attuned only increases up to 2 times the original level (i.e. bonus <= level) */ |
95 |
// repell has no such quarrels |
96 |
return (caster->path_attuned & spell->path_attuned ? min (level, +ATTUNE_REPELL) : 0) |
97 |
+ (caster->path_repelled & spell->path_attuned ? -ATTUNE_REPELL : 0); |
98 |
} |
99 |
|
100 |
/* This function returns the effective level the spell |
101 |
* is being cast at. |
102 |
*/ |
103 |
int |
104 |
casting_level (object *caster, object *spell) |
105 |
{ |
106 |
int level = caster->level; |
107 |
|
108 |
/* if a rod is fired by a player, take the use_magic_item skill in consideration. */ |
109 |
if (caster->type == ROD && caster->env && caster->env->type == PLAYER) |
110 |
{ |
111 |
object *skill = find_skill_by_number (caster->env, SK_USE_MAGIC_ITEM); |
112 |
int sk_level = skill ? skill->level : 1; |
113 |
|
114 |
level = min (level, sk_level + level / 10 + 1); |
115 |
} |
116 |
else if (caster->type == PLAYER) /* If this is a player, try to find the matching skill */ |
117 |
if (object *skill = caster->contr->find_skill (spell->skill)) |
118 |
level = skill->level; |
119 |
|
120 |
int bonus = attuned_bonus (caster, spell, level); |
121 |
|
122 |
level += bonus; |
123 |
|
124 |
// now scale the effective level from the startinglevel..100 range to 1..100 |
125 |
if (level < 100) |
126 |
level = lerp (level, (int)spell->level, 100, 1, 100); |
127 |
|
128 |
/* Always make this at least 1. If this is zero, we get divide by zero |
129 |
* errors in various places. |
130 |
*/ |
131 |
return clamp (level, 1, settings.max_level); |
132 |
} |
133 |
|
134 |
/* The following function scales the spellpoint cost of |
135 |
* a spell by it's increased effectiveness. Some of the |
136 |
* lower level spells become incredibly vicious at high |
137 |
* levels. Very cheap mass destruction. This function is |
138 |
* intended to keep the sp cost related to the effectiveness. |
139 |
* op is the player/monster |
140 |
* caster is what is casting the spell, can be op. |
141 |
* spell is the spell object. |
142 |
* Note that it is now possible for a spell to cost both grace and |
143 |
* mana. In that case, we return which ever value is higher. |
144 |
*/ |
145 |
sint16 |
146 |
SP_level_spellpoint_cost (object *caster, object *spell, int flags) |
147 |
{ |
148 |
int sp, grace, level = casting_level (caster, spell); |
149 |
|
150 |
if (settings.spellpoint_level_depend == TRUE) |
151 |
{ |
152 |
if (spell->stats.sp && spell->stats.maxsp) |
153 |
{ |
154 |
sp = (int) (spell->stats.sp * (1.0 + MAX (0, (float) (level - spell->level) / (float) spell->stats.maxsp))); |
155 |
} |
156 |
else |
157 |
sp = spell->stats.sp; |
158 |
|
159 |
sp *= (int) PATH_SP_MULT (caster, spell); |
160 |
if (!sp && spell->stats.sp) |
161 |
sp = 1; |
162 |
|
163 |
if (spell->stats.grace && spell->stats.maxgrace) |
164 |
{ |
165 |
grace = (int) (spell->stats.grace * (1.0 + MAX (0, (float) (level - spell->level) / (float) spell->stats.maxgrace))); |
166 |
} |
167 |
else |
168 |
grace = spell->stats.grace; |
169 |
|
170 |
grace *= (int) PATH_SP_MULT (caster, spell); |
171 |
if (spell->stats.grace && !grace) |
172 |
grace = 1; |
173 |
} |
174 |
else |
175 |
{ |
176 |
sp = (int) (spell->stats.sp * PATH_SP_MULT (caster, spell)); |
177 |
if (spell->stats.sp && !sp) |
178 |
sp = 1; |
179 |
|
180 |
grace = (int) (spell->stats.grace * PATH_SP_MULT (caster, spell)); |
181 |
if (spell->stats.grace && !grace) |
182 |
grace = 1; |
183 |
} |
184 |
|
185 |
if (flags == SPELL_HIGHEST) |
186 |
return MAX (sp, grace); |
187 |
else if (flags == SPELL_GRACE) |
188 |
return grace; |
189 |
else if (flags == SPELL_MANA) |
190 |
return sp; |
191 |
else |
192 |
{ |
193 |
LOG (llevError, "SP_level_spellpoint_cost: Unknown flags passed: %d\n", flags); |
194 |
return 0; |
195 |
} |
196 |
} |
197 |
|
198 |
/* |
199 |
* Return the effective casting level of the spell. |
200 |
* To make spells independent of their starting level, this function |
201 |
* scales the range spellstartlevel .. 100 into the range 1..100 |
202 |
*/ |
203 |
static int |
204 |
SP_casting_level (object *caster, object *spell) |
205 |
{ |
206 |
return casting_level (caster, spell); |
207 |
} |
208 |
|
209 |
/* SP_level_dam_adjust: Returns adjusted damage based on the caster. |
210 |
* spob is the spell we are adjusting. |
211 |
*/ |
212 |
int |
213 |
SP_level_dam_adjust (object *caster, object *spob) |
214 |
{ |
215 |
if (!spob->dam_modifier) |
216 |
return 0; |
217 |
|
218 |
return SP_casting_level (caster, spob) / spob->dam_modifier; |
219 |
} |
220 |
|
221 |
/* Adjust the strength of the spell based on level. |
222 |
* This is basically the same as SP_level_dam_adjust above, |
223 |
* but instead looks at the level_modifier value. |
224 |
*/ |
225 |
int |
226 |
SP_level_duration_adjust (object *caster, object *spob) |
227 |
{ |
228 |
if (!spob->duration_modifier) |
229 |
return 0; |
230 |
|
231 |
return SP_casting_level (caster, spob) / spob->duration_modifier; |
232 |
} |
233 |
|
234 |
/* Adjust the strength of the spell based on level. |
235 |
* This is basically the same as SP_level_dam_adjust above, |
236 |
* but instead looks at the level_modifier value. |
237 |
*/ |
238 |
int |
239 |
SP_level_range_adjust (object *caster, object *spob) |
240 |
{ |
241 |
if (!spob->range_modifier) |
242 |
return 0; |
243 |
|
244 |
return SP_casting_level (caster, spob) / spob->range_modifier; |
245 |
} |
246 |
|
247 |
/* Checks to see if player knows the spell. If the name is the same |
248 |
* as an existing spell, we presume they know it. |
249 |
* returns 1 if they know the spell, 0 if they don't. |
250 |
*/ |
251 |
object * |
252 |
check_spell_known (object *op, shstr_cmp name) |
253 |
{ |
254 |
object *spop; |
255 |
|
256 |
for (spop = op->inv; spop; spop = spop->below) |
257 |
if (spop->type == SPELL && spop->name == name) |
258 |
return spop; |
259 |
|
260 |
return 0; |
261 |
} |
262 |
|
263 |
/* |
264 |
* Look at object 'op' and see if they know the spell |
265 |
* spname. This is pretty close to check_spell_known |
266 |
* above, but it uses a looser matching mechanism. |
267 |
* returns the matching spell object, or NULL. |
268 |
* If we match multiple spells but don't get an |
269 |
* exact match, we also return NULL. |
270 |
*/ |
271 |
object * |
272 |
lookup_spell_by_name (object *op, const char *spname) |
273 |
{ |
274 |
object *spob1 = 0, *spob2 = 0; |
275 |
int nummatch = 0; |
276 |
|
277 |
if (!spname) |
278 |
return 0; |
279 |
|
280 |
/* Try to find the spell. We store the results in spob1 |
281 |
* and spob2 - spob1 is only taking the length of |
282 |
* the past spname, spob2 uses the length of the spell name. |
283 |
*/ |
284 |
for (object *spob = op->inv; spob; spob = spob->below) |
285 |
{ |
286 |
if (spob->type == SPELL) |
287 |
{ |
288 |
// TODO: WTF? |
289 |
if (!strncmp (spob->name, spname, strlen (spname))) |
290 |
{ |
291 |
nummatch++; |
292 |
spob1 = spob; |
293 |
} |
294 |
else if (!strncmp (spob->name, spname, strlen (spob->name))) |
295 |
{ |
296 |
/* if spells have ambiguous names, it makes matching |
297 |
* really difficult. (eg, fire and fireball would |
298 |
* fall into this category). It shouldn't be hard to |
299 |
* make sure spell names don't overlap in that fashion. |
300 |
*/ |
301 |
if (spob2) |
302 |
LOG (llevError, "Found multiple spells with overlapping base names: %s, %s\n", &spob2->name, &spob->name); |
303 |
|
304 |
spob2 = spob; |
305 |
} |
306 |
} |
307 |
} |
308 |
/* if we have best match, return it. Otherwise, if we have one match |
309 |
* on the loser match, return that, otehrwise null |
310 |
*/ |
311 |
if (spob2) |
312 |
return spob2; |
313 |
|
314 |
if (spob1 && nummatch == 1) |
315 |
return spob1; |
316 |
|
317 |
return NULL; |
318 |
} |
319 |
|
320 |
/* reflwall - decides weither the (spell-)object sp_op will |
321 |
* be reflected from the given mapsquare. Returns 1 if true. |
322 |
* (Note that for living creatures there is a small chance that |
323 |
* reflect_spell fails.) |
324 |
* Caller should be sure it passes us valid map coordinates |
325 |
* eg, updated for tiled maps. |
326 |
*/ |
327 |
int |
328 |
reflwall (maptile *m, int x, int y, object *sp_op) |
329 |
{ |
330 |
if (OUT_OF_REAL_MAP (m, x, y)) |
331 |
return 0; |
332 |
|
333 |
for (object *op = GET_MAP_OB (m, x, y); op; op = op->above) |
334 |
if (QUERY_FLAG (op, FLAG_REFL_SPELL) |
335 |
&& (!QUERY_FLAG (op, FLAG_ALIVE) |
336 |
|| (rndm (0, 99)) < 90 - (sp_op->level / 10))) |
337 |
return 1; |
338 |
|
339 |
return 0; |
340 |
} |
341 |
|
342 |
/* cast_create_object: creates object new_op in direction dir |
343 |
* or if that is blocked, beneath the player (op). |
344 |
* we pass 'caster', but don't use it for anything. |
345 |
* This is really just a simple wrapper function . |
346 |
* returns the direction that the object was actually placed |
347 |
* in. |
348 |
*/ |
349 |
int |
350 |
cast_create_obj (object *op, object *caster, object *new_op, int dir) |
351 |
{ |
352 |
maptile *m; |
353 |
sint16 sx, sy; |
354 |
|
355 |
if (dir && |
356 |
((get_map_flags (op->map, &m, op->x + freearr_x[dir], op->y + freearr_y[dir], &sx, &sy) & P_OUT_OF_MAP) || |
357 |
OB_TYPE_MOVE_BLOCK (op, GET_MAP_MOVE_BLOCK (m, sx, sy)))) |
358 |
{ |
359 |
new_draw_info (NDI_UNIQUE, 0, op, "Something is in the way."); |
360 |
new_draw_info (NDI_UNIQUE, 0, op, "You cast it at your feet."); |
361 |
dir = 0; |
362 |
} |
363 |
|
364 |
SET_FLAG (new_op, FLAG_IDENTIFIED); |
365 |
op->map->insert (new_op, |
366 |
op->x + freearr_x[dir], op->y + freearr_y[dir], |
367 |
op, |
368 |
dir ? 0 : INS_BELOW_ORIGINATOR); |
369 |
|
370 |
return dir; |
371 |
} |
372 |
|
373 |
static bool |
374 |
mergable_owner (object *o1, object *o2) |
375 |
{ |
376 |
if (o1 == o2) |
377 |
return 1; |
378 |
|
379 |
if (!o1 || !o2) |
380 |
return 0; |
381 |
|
382 |
if (o1->flag [FLAG_FRIENDLY] != o1->flag [FLAG_FRIENDLY]) |
383 |
return 0; |
384 |
|
385 |
if (o1->is_player () || o2->is_player ()) |
386 |
return 0; |
387 |
|
388 |
return 1; |
389 |
} |
390 |
|
391 |
/* Returns true if it is ok to put spell *op on the space/may provided. |
392 |
* immune_stop is basically the attacktype of the spell (why |
393 |
* passed as a different value, not sure of). If immune_stop |
394 |
* has the AT_MAGIC bit set, and there is a counterwall |
395 |
* on the space, the object doesn't get placed. if immune stop |
396 |
* does not have AT_MAGIC, then counterwalls do not effect the spell. |
397 |
*/ |
398 |
int |
399 |
ok_to_put_more (maptile *m, sint16 x, sint16 y, object *op, int immune_stop) |
400 |
{ |
401 |
if (!xy_normalise (m, x, y)) |
402 |
return 0; |
403 |
|
404 |
mapspace &ms = m->at (x, y); |
405 |
ms.update (); |
406 |
|
407 |
if (OB_TYPE_MOVE_BLOCK (op, ms.move_block)) |
408 |
return 0; |
409 |
|
410 |
int max_effects = 5; // max. number of similar spells per mapspace |
411 |
|
412 |
for (object *tmp = ms.bot; tmp; tmp = tmp->above) |
413 |
{ |
414 |
/* If there is a counterspell on the space, and this |
415 |
* object is using magic, don't progress. I believe we could |
416 |
* leave this out and let in progress, and other areas of the code |
417 |
* will then remove it, but that would seem to to use more |
418 |
* resources, and may not work as well if a player is standing |
419 |
* on top of a counterwall spell (may hit the player before being |
420 |
* removed.) On the other hand, it may be more dramatic for the |
421 |
* spell to actually hit the counterwall and be sucked up. |
422 |
*/ |
423 |
if ((tmp->attacktype & AT_COUNTERSPELL) |
424 |
&& !QUERY_FLAG (tmp, FLAG_MONSTER) |
425 |
&& (tmp->type != PLAYER) |
426 |
&& (tmp->type != WEAPON) |
427 |
&& (tmp->type != BOW) |
428 |
&& (tmp->type != ARROW) |
429 |
&& (tmp->type != GOLEM) |
430 |
&& !QUERY_FLAG (tmp, FLAG_IS_FLOOR) // XXX: |
431 |
// we special case floor here because there |
432 |
// are sometimes spell effect floors |
433 |
// which are used to inflict damage |
434 |
// (and those shouldn't go away from |
435 |
// sanctuary) see also: permanent lava |
436 |
&& (immune_stop & AT_MAGIC)) |
437 |
return 0; |
438 |
|
439 |
if (tmp->type == op->type) |
440 |
{ |
441 |
if (tmp->subtype == op->subtype |
442 |
&& tmp->arch == op->arch /* no harm if not comparing by name here */) |
443 |
{ |
444 |
/* This is to prevent 'out of control' spells. Basically, this |
445 |
* limits one spell effect per space per spell. This is definately |
446 |
* needed for performance reasons, and just for playability I believe. |
447 |
* there are no such things as multispaced spells right now, so |
448 |
* we don't need to worry about the head. |
449 |
*/ |
450 |
if (tmp->stats.maxhp == op->stats.maxhp) |
451 |
return 0; |
452 |
|
453 |
/* |
454 |
* Combine similar spell effects into one spell effect. Needed for |
455 |
* performance reasons with meteor swarm and the like, but also for |
456 |
* playability reasons. |
457 |
*/ |
458 |
if (((tmp->subtype == SP_EXPLOSION) || (tmp->subtype == SP_CONE && tmp->stats.sp == op->stats.sp))) |
459 |
if (mergable_owner (tmp, op)) |
460 |
{ |
461 |
// if same owner, then combine, but reduce advantage of multiple spells |
462 |
max_it (tmp->stats.dam, op->stats.dam); |
463 |
max_it (tmp->range , op->range); |
464 |
max_it (tmp->duration , op->duration); |
465 |
return 0; |
466 |
} |
467 |
} |
468 |
|
469 |
// if there are too many spell effects on this space, |
470 |
// then don't allow more of them, for performance reasons. |
471 |
if (tmp->type == SPELL_EFFECT |
472 |
&& !--max_effects) |
473 |
return 0; |
474 |
} |
475 |
|
476 |
/* Perhaps we should also put checks in for no magic and unholy |
477 |
* ground to prevent it from moving along? |
478 |
*/ |
479 |
} |
480 |
|
481 |
/* If it passes the above tests, it must be OK */ |
482 |
return 1; |
483 |
} |
484 |
|
485 |
/* fire_arch_from_position: fires an archetype. |
486 |
* op: person firing the object. |
487 |
* caster: object casting the spell. |
488 |
* x, y: where to fire the spell (note, it then uses op->map for the map |
489 |
* for these coordinates, which is probably a really bad idea. |
490 |
* dir: direction to fire in. |
491 |
* spell: spell that is being fired. It uses other_arch for the archetype |
492 |
* to fire. |
493 |
* returns 0 on failure, 1 on success. |
494 |
*/ |
495 |
int |
496 |
fire_arch_from_position (object *op, object *caster, sint16 x, sint16 y, int dir, object *spell) |
497 |
{ |
498 |
if (!spell->other_arch) |
499 |
return 0; |
500 |
|
501 |
object *tmp = spell->other_arch->instance (); |
502 |
|
503 |
if (!tmp) |
504 |
return 0; |
505 |
|
506 |
tmp->stats.dam = spell->stats.dam + SP_level_dam_adjust (caster, spell); |
507 |
tmp->duration = spell->duration + SP_level_duration_adjust (caster, spell); |
508 |
/* code in time.c uses food for some things, duration for others */ |
509 |
tmp->stats.food = tmp->duration; |
510 |
tmp->range = spell->range + SP_level_range_adjust (caster, spell); |
511 |
tmp->attacktype = spell->attacktype; |
512 |
tmp->direction = dir; |
513 |
tmp->set_owner (op); |
514 |
tmp->level = casting_level (caster, spell); |
515 |
set_spell_skill (op, caster, spell, tmp); |
516 |
|
517 |
/* needed for AT_HOLYWORD,AT_GODPOWER stuff */ |
518 |
if (tmp->attacktype & AT_HOLYWORD || tmp->attacktype & AT_GODPOWER) |
519 |
if (!tailor_god_spell (tmp, op)) |
520 |
return 0; |
521 |
|
522 |
if (QUERY_FLAG (tmp, FLAG_IS_TURNABLE)) |
523 |
SET_ANIMATION (tmp, dir); |
524 |
|
525 |
if ((tmp = op->map->insert (tmp, x, y, op))) |
526 |
move_spell_effect (tmp); |
527 |
|
528 |
return 1; |
529 |
} |
530 |
|
531 |
/***************************************************************************** |
532 |
* |
533 |
* Code related to rods - perhaps better located in another file? |
534 |
* |
535 |
****************************************************************************/ |
536 |
void |
537 |
regenerate_rod (object *rod) |
538 |
{ |
539 |
if (rod->stats.hp < rod->stats.maxhp) |
540 |
rod->stats.hp = min (rod->stats.maxhp, rod->stats.hp + 1 + rod->stats.maxhp / 10); |
541 |
} |
542 |
|
543 |
void |
544 |
drain_rod_charge (object *rod) |
545 |
{ |
546 |
rod->stats.hp -= SP_level_spellpoint_cost (rod, rod->inv, SPELL_HIGHEST); |
547 |
} |
548 |
|
549 |
/* this function is commonly used to find a friendly target for |
550 |
* spells such as heal or protection or armour |
551 |
* op is what is looking for the target (which can be a player), |
552 |
* dir is the direction we are looking in. Return object found, or |
553 |
* NULL if no good object. |
554 |
*/ |
555 |
object * |
556 |
find_target_for_friendly_spell (object *op, int dir) |
557 |
{ |
558 |
object *tmp; |
559 |
|
560 |
/* I don't really get this block - if op isn't a player or rune, |
561 |
* we then make the owner of this object the target. |
562 |
* The owner could very well be no where near op. |
563 |
*/ |
564 |
if (op->type != PLAYER && op->type != RUNE) |
565 |
{ |
566 |
tmp = op->owner; |
567 |
/* If the owner does not exist, or is not a monster, than apply the spell |
568 |
* to the caster. |
569 |
*/ |
570 |
if (!tmp || !QUERY_FLAG (tmp, FLAG_MONSTER)) |
571 |
tmp = op; |
572 |
} |
573 |
else |
574 |
{ |
575 |
maptile *m = op->map; |
576 |
sint16 x = op->x + freearr_x[dir]; |
577 |
sint16 y = op->y + freearr_y[dir]; |
578 |
|
579 |
tmp = xy_normalise (m, x, y) |
580 |
? m->at (x, y).player () |
581 |
: 0; |
582 |
} |
583 |
|
584 |
/* didn't find a player there, look in current square for a player */ |
585 |
if (!tmp) |
586 |
tmp = op->ms ().player (); |
587 |
|
588 |
return tmp; |
589 |
} |
590 |
|
591 |
/* raytrace: |
592 |
* spell_find_dir(map, x, y, exclude) will search first the center square |
593 |
* then some close squares in the given map at the given coordinates for |
594 |
* live objects. |
595 |
* It will not consider the object given as exclude (= caster) among possible |
596 |
* live objects. If the caster is a player, the spell will go after |
597 |
* monsters/generators only. If not, the spell will hunt players only. |
598 |
* It returns the direction toward the first/closest live object if it finds |
599 |
* any, otherwise -1. |
600 |
* note that exclude can be NULL, in which case all bets are off. |
601 |
*/ |
602 |
int |
603 |
spell_find_dir (maptile *m, int x, int y, object *exclude) |
604 |
{ |
605 |
int i, max = SIZEOFFREE; |
606 |
sint16 nx, ny; |
607 |
int owner_type = 0, mflags; |
608 |
object *tmp; |
609 |
maptile *mp; |
610 |
|
611 |
if (exclude && exclude->head) |
612 |
exclude = exclude->head; |
613 |
if (exclude && exclude->type) |
614 |
owner_type = exclude->type; |
615 |
|
616 |
for (i = rndm (1, 8); i < max; i++) |
617 |
{ |
618 |
nx = x + freearr_x[i]; |
619 |
ny = y + freearr_y[i]; |
620 |
mp = m; |
621 |
mflags = get_map_flags (m, &mp, nx, ny, &nx, &ny); |
622 |
if (mflags & (P_OUT_OF_MAP | P_BLOCKSVIEW)) |
623 |
continue; |
624 |
|
625 |
tmp = GET_MAP_OB (mp, nx, ny); |
626 |
|
627 |
while (tmp != NULL && (((owner_type == PLAYER && |
628 |
!QUERY_FLAG (tmp, FLAG_MONSTER) && !QUERY_FLAG (tmp, FLAG_GENERATOR)) || |
629 |
(owner_type != PLAYER && tmp->type != PLAYER)) || (tmp == exclude || (tmp->head && tmp->head == exclude)))) |
630 |
tmp = tmp->above; |
631 |
|
632 |
if (tmp != NULL && can_see_monsterP (m, x, y, i)) |
633 |
return freedir[i]; |
634 |
} |
635 |
return -1; /* flag for "keep going the way you were" */ |
636 |
} |
637 |
|
638 |
/* put_a_monster: puts a monster named monstername near by |
639 |
* op. This creates the treasures for the monsters, and |
640 |
* also deals with multipart monsters properly. |
641 |
*/ |
642 |
void |
643 |
put_a_monster (object *op, const char *monstername) |
644 |
{ |
645 |
object *tmp, *head = NULL, *prev = NULL; |
646 |
archetype *at; |
647 |
int dir; |
648 |
|
649 |
/* Handle cases where we are passed a bogus mosntername */ |
650 |
|
651 |
if ((at = archetype::find (monstername)) == NULL) |
652 |
return; |
653 |
|
654 |
/* find a free square nearby |
655 |
* first we check the closest square for free squares |
656 |
*/ |
657 |
|
658 |
dir = find_first_free_spot (at, op->map, op->x, op->y); |
659 |
if (dir != -1) |
660 |
{ |
661 |
/* This is basically grabbed for generate monster. Fixed 971225 to |
662 |
* insert multipart monsters properly |
663 |
*/ |
664 |
//TODO: use expand_tail + ... |
665 |
while (at != NULL) |
666 |
{ |
667 |
tmp = arch_to_object (at); |
668 |
tmp->x = op->x + freearr_x[dir] + at->x; |
669 |
tmp->y = op->y + freearr_y[dir] + at->y; |
670 |
tmp->map = op->map; |
671 |
if (head) |
672 |
{ |
673 |
tmp->head = head; |
674 |
prev->more = tmp; |
675 |
} |
676 |
|
677 |
if (!head) |
678 |
head = tmp; |
679 |
|
680 |
prev = tmp; |
681 |
|
682 |
at = (archetype *)at->more; |
683 |
} |
684 |
|
685 |
if (head->randomitems) |
686 |
create_treasure (head->randomitems, head, GT_INVISIBLE, op->map->difficulty, 0); |
687 |
|
688 |
insert_ob_in_map (head, op->map, op, 0); |
689 |
|
690 |
/* thought it'd be cool to insert a burnout, too. */ |
691 |
op->map->insert (archetype::get (shstr_burnout), op->x + freearr_x[dir], op->y + freearr_y[dir], op); |
692 |
} |
693 |
} |
694 |
|
695 |
/* peterm: function which summons hostile monsters and |
696 |
* places them in nearby squares. |
697 |
* op is the summoner. |
698 |
* n is the number of monsters. |
699 |
* monstername is the name of the monster. |
700 |
* returns the number of monsters, which is basically n. |
701 |
* it should really see how many it successfully replaced and |
702 |
* return that instead. |
703 |
* Note that this is not used by any spells (summon evil monsters |
704 |
* use to call this, but best I can tell, that spell/ability was |
705 |
* never used. This is however used by various failures on the |
706 |
* players part (alchemy, reincarnation, etc) |
707 |
*/ |
708 |
int |
709 |
summon_hostile_monsters (object *op, int n, const char *monstername) |
710 |
{ |
711 |
int i; |
712 |
|
713 |
for (i = 0; i < n; i++) |
714 |
put_a_monster (op, monstername); |
715 |
|
716 |
return n; |
717 |
} |
718 |
|
719 |
|
720 |
/* Some local definitions for shuffle-attack */ |
721 |
struct attacktype_shuffle |
722 |
{ |
723 |
int attacktype; |
724 |
int face; |
725 |
} ATTACKS[22] = |
726 |
{ |
727 |
{ AT_PHYSICAL, 0}, |
728 |
{ AT_PHYSICAL, 0}, /*face = explosion */ |
729 |
{ AT_PHYSICAL, 0}, |
730 |
{ AT_MAGIC, 1}, |
731 |
{ AT_MAGIC, 1}, /* face = last-burnout */ |
732 |
{ AT_MAGIC, 1}, |
733 |
{ AT_FIRE, 2}, |
734 |
{ AT_FIRE, 2}, /* face = fire.... */ |
735 |
{ AT_FIRE, 2}, |
736 |
{ AT_ELECTRICITY, 3}, |
737 |
{ AT_ELECTRICITY, 3}, /* ball_lightning */ |
738 |
{ AT_ELECTRICITY, 3}, |
739 |
{ AT_COLD, 4}, |
740 |
{ AT_COLD, 4}, /* face=icestorm */ |
741 |
{ AT_COLD, 4}, |
742 |
{ AT_CONFUSION, 5}, |
743 |
{ AT_POISON, 7}, |
744 |
{ AT_POISON, 7}, /* face = acid sphere. generator */ |
745 |
{ AT_POISON, 7}, /* poisoncloud face */ |
746 |
{ AT_SLOW, 8}, |
747 |
{ AT_PARALYZE, 9}, |
748 |
{ AT_FEAR, 10}, |
749 |
}; |
750 |
|
751 |
/* shuffle_attack: peterm |
752 |
* This routine shuffles the attack of op to one of the |
753 |
* ones in the list. It does this at random. It also |
754 |
* chooses a face appropriate to the attack that is |
755 |
* being committed by that square at the moment. |
756 |
* right now it's being used by color spray and create pool of |
757 |
* chaos. |
758 |
* This could really be a better implementation - the |
759 |
* faces and attacktypes above are hardcoded, which is never |
760 |
* good. The faces refer to faces in the animation sequence. |
761 |
* Not sure how to do better - but not having it hardcoded |
762 |
* would be nice. |
763 |
* I also fixed a bug here in that attacktype was |= - |
764 |
* to me, that would be that it would quickly get all |
765 |
* attacktypes, which probably wasn't the intent. MSW 2003-06-03 |
766 |
*/ |
767 |
void |
768 |
shuffle_attack (object *op, int change_face) |
769 |
{ |
770 |
int i; |
771 |
|
772 |
i = rndm (0, 21); |
773 |
|
774 |
op->attacktype = ATTACKS[i].attacktype | AT_MAGIC; |
775 |
|
776 |
if (change_face) |
777 |
{ |
778 |
SET_ANIMATION (op, ATTACKS[i].face); |
779 |
} |
780 |
} |
781 |
|
782 |
/* prayer_failure: This is called when a player fails |
783 |
* at casting a prayer. |
784 |
* op is the player. |
785 |
* failure is basically how much grace they had. |
786 |
* power is how much grace the spell would normally take to cast. |
787 |
*/ |
788 |
void |
789 |
prayer_failure (object *op, int failure, int power) |
790 |
{ |
791 |
const char *godname; |
792 |
object *tmp; |
793 |
|
794 |
if (!strcmp ((godname = determine_god (op)), "none")) |
795 |
godname = "Your spirit"; |
796 |
|
797 |
if (failure <= -20 && failure > -40) /* wonder */ |
798 |
{ |
799 |
new_draw_info_format (NDI_UNIQUE, 0, op, "%s gives a sign to renew your faith.", godname); |
800 |
tmp = get_archetype (SPELL_WONDER); |
801 |
cast_cone (op, op, 0, tmp); |
802 |
tmp->destroy (); |
803 |
} |
804 |
|
805 |
else if (failure <= -40 && failure > -60) /* confusion */ |
806 |
{ |
807 |
new_draw_info (NDI_UNIQUE, 0, op, "Your diety touches your mind!"); |
808 |
confuse_player (op, op, 99); |
809 |
} |
810 |
else if (failure <= -60 && failure > -150) /* paralysis */ |
811 |
{ |
812 |
new_draw_info_format (NDI_UNIQUE, 0, op, "%s requires you to pray NOW.", godname); |
813 |
new_draw_info (NDI_UNIQUE, 0, op, "You comply, ignoring all else."); |
814 |
paralyze_player (op, op, 99); |
815 |
} |
816 |
else if (failure <= -150) /* blast the immediate area */ |
817 |
{ |
818 |
tmp = get_archetype (GOD_POWER); |
819 |
new_draw_info_format (NDI_UNIQUE, 0, op, "%s smites you!", godname); |
820 |
cast_magic_storm (op, tmp, power); |
821 |
} |
822 |
} |
823 |
|
824 |
/* |
825 |
* spell_failure() handles the various effects for differing degrees |
826 |
* of failure badness. |
827 |
* op is the player that failed. |
828 |
* failure is a random value of how badly you failed. |
829 |
* power is how many spellpoints you'd normally need for the spell. |
830 |
* skill is the skill you'd need to cast the spell. |
831 |
*/ |
832 |
|
833 |
void |
834 |
spell_failure (object *op, int failure, int power, object *skill) |
835 |
{ |
836 |
object *tmp; |
837 |
|
838 |
if (settings.spell_failure_effects == FALSE) |
839 |
return; |
840 |
|
841 |
if (failure <= -20 && failure > -40) /* wonder */ |
842 |
{ |
843 |
new_draw_info (NDI_UNIQUE, 0, op, "Your spell causes an unexpected effect."); |
844 |
tmp = get_archetype (SPELL_WONDER); |
845 |
cast_cone (op, op, 0, tmp); |
846 |
tmp->destroy (); |
847 |
} |
848 |
|
849 |
else if (failure <= -40 && failure > -60) /* confusion */ |
850 |
{ |
851 |
new_draw_info (NDI_UNIQUE, 0, op, "Your magic recoils on you, making you confused!"); |
852 |
confuse_player (op, op, 99); |
853 |
} |
854 |
else if (failure <= -60 && failure > -80) /* paralysis */ |
855 |
{ |
856 |
new_draw_info (NDI_UNIQUE, 0, op, "Your magic stuns you!"); |
857 |
paralyze_player (op, op, 99); |
858 |
} |
859 |
else if (failure <= -80) /* blast the immediate area */ |
860 |
{ |
861 |
object *tmp; |
862 |
|
863 |
/* Safety check to make sure we don't get any mana storms in scorn */ |
864 |
if (get_map_flags (op->map, NULL, op->x, op->y, NULL, NULL) & P_NO_MAGIC) |
865 |
{ |
866 |
new_draw_info (NDI_UNIQUE, 0, op, "The magic warps and you are turned inside out!"); |
867 |
hit_player (op, 9998, op, AT_INTERNAL, 1); |
868 |
|
869 |
} |
870 |
else |
871 |
{ |
872 |
new_draw_info (NDI_UNIQUE, 0, op, "You lose control of the mana! The uncontrolled magic blasts you!"); |
873 |
tmp = get_archetype (LOOSE_MANA); |
874 |
tmp->level = skill->level; |
875 |
|
876 |
/* increase the area of destruction a little for more powerful spells */ |
877 |
tmp->range += isqrt (power); |
878 |
|
879 |
if (power > 25) |
880 |
tmp->stats.dam = 25 + isqrt (power); |
881 |
else |
882 |
tmp->stats.dam = power; /* nasty recoils! */ |
883 |
|
884 |
tmp->stats.maxhp = tmp->count; |
885 |
|
886 |
tmp->insert_at (op); |
887 |
} |
888 |
} |
889 |
} |
890 |
|
891 |
int |
892 |
cast_party_spell (object *op, object *caster, int dir, object *spell_ob, char *stringarg) |
893 |
{ |
894 |
int success; |
895 |
object *spell; |
896 |
|
897 |
if (!spell_ob->other_arch) |
898 |
{ |
899 |
LOG (llevError, "cast_party_spell: empty other arch\n"); |
900 |
return 0; |
901 |
} |
902 |
|
903 |
spell = arch_to_object (spell_ob->other_arch); |
904 |
|
905 |
/* Always cast spell on caster */ |
906 |
success = cast_spell (op, caster, dir, spell, stringarg); |
907 |
|
908 |
if (caster->contr->party == NULL) |
909 |
{ |
910 |
spell->remove (); |
911 |
return success; |
912 |
} |
913 |
|
914 |
for_all_players (pl) |
915 |
if ((pl->ob->contr->party == caster->contr->party) && (on_same_map (pl->ob, caster))) |
916 |
cast_spell (pl->ob, caster, pl->ob->facing, spell, stringarg); |
917 |
|
918 |
spell->remove (); |
919 |
return success; |
920 |
} |
921 |
|
922 |
/* This is where the main dispatch when someone casts a spell. |
923 |
* |
924 |
* op is the creature that is owner of the object that is casting the spell - |
925 |
* eg, the player or monster. |
926 |
* caster is the actual object (wand, potion) casting the spell. can be |
927 |
* same as op. |
928 |
* dir is the direction to cast in. Note in some cases, if the spell |
929 |
* is self only, dir really doesn't make a difference. |
930 |
* spell_ob is the spell object that is being cast. From that, |
931 |
* we can determine what to do. |
932 |
* stringarg is any options that are being used. It can be NULL. Almost |
933 |
* certainly, only players will set it. It is basically used as optional |
934 |
* parameters to a spell (eg, item to create, information for marking runes, |
935 |
* etc. |
936 |
* returns 1 on successful cast, or 0 on error. These values should really |
937 |
* be swapped, so that 0 is successful, and non zero is failure, with a code |
938 |
* of what it failed. |
939 |
* |
940 |
* Note that this function is really a dispatch routine that calls other |
941 |
* functions - it just blindly returns what ever value those functions |
942 |
* return. So if your writing a new function that is called from this, |
943 |
* it shoudl also return 1 on success, 0 on failure. |
944 |
* |
945 |
* if it is a player casting the spell (op->type == PLAYER, op == caster), |
946 |
* this function will decrease the mana/grace appropriately. For other |
947 |
* objects, the caller should do what it considers appropriate. |
948 |
*/ |
949 |
int |
950 |
cast_spell (object *op, object *caster, int dir, object *spell_ob, char *stringarg) |
951 |
{ |
952 |
const char *godname; |
953 |
int success = 0; |
954 |
object *skill = NULL; |
955 |
|
956 |
if (!spell_ob) |
957 |
{ |
958 |
LOG (llevError, "cast_spell: null spell object passed\n"); |
959 |
return 0; |
960 |
} |
961 |
|
962 |
if (!strcmp ((godname = determine_god (op)), "none")) |
963 |
godname = "A random spirit"; |
964 |
|
965 |
/* the caller should set caster to op if appropriate */ |
966 |
if (!caster) |
967 |
{ |
968 |
LOG (llevError, "cast_spell: null caster object passed\n"); |
969 |
return 0; |
970 |
} |
971 |
|
972 |
/* if caster is a spell casting object, this normally shouldn't be |
973 |
* an issue, because they don't have any spellpaths set up. |
974 |
*/ |
975 |
if (caster->path_denied & spell_ob->path_attuned && !QUERY_FLAG (caster, FLAG_WIZCAST)) |
976 |
{ |
977 |
new_draw_info (NDI_UNIQUE, 0, op, "That spell path is denied to you."); |
978 |
return 0; |
979 |
} |
980 |
|
981 |
/* if it is a player casting the spell, and they are really casting it |
982 |
* (vs it coming from a wand, scroll, or whatever else), do some |
983 |
* checks. We let monsters do special things - eg, they |
984 |
* don't need the skill, bypass level checks, etc. The monster function |
985 |
* should take care of that. |
986 |
* Remove the wiz check here and move it further down - some spells |
987 |
* need to have the right skill pointer passed, so we need to |
988 |
* at least process that code. |
989 |
*/ |
990 |
if (op->type == PLAYER && op == caster) |
991 |
{ |
992 |
if (spell_ob->skill) |
993 |
{ |
994 |
skill = find_skill_by_name (op, spell_ob->skill); |
995 |
|
996 |
if (!skill) |
997 |
{ |
998 |
op->failmsg (format ("You need the skill %s to cast %s! " |
999 |
"H<You either need to learn the skill via a skill scroll " |
1000 |
"or you need to wear a talisman or holy symbol.>", |
1001 |
&spell_ob->skill, &spell_ob->name)); |
1002 |
return 0; |
1003 |
} |
1004 |
|
1005 |
const char *msg = ""; |
1006 |
|
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) |
1022 |
{ |
1023 |
op->failmsg (format ("You lack enough skill to cast that spell! " |
1024 |
"H<Your effective cast level is %d%s, but level %d is required.>", |
1025 |
caster_level, msg, spell_ob->level)); |
1026 |
if (!op->is_wiz ()) |
1027 |
return 0; |
1028 |
} |
1029 |
} |
1030 |
|
1031 |
/* If the caster is the wiz, they don't ever fail, and don't have |
1032 |
* to have sufficient grace/mana. |
1033 |
*/ |
1034 |
if (!QUERY_FLAG (op, FLAG_WIZCAST)) |
1035 |
{ |
1036 |
if (SP_level_spellpoint_cost (caster, spell_ob, SPELL_MANA) && |
1037 |
SP_level_spellpoint_cost (caster, spell_ob, SPELL_MANA) > op->stats.sp) |
1038 |
{ |
1039 |
op->failmsg ("You don't have enough mana!"); |
1040 |
return 0; |
1041 |
} |
1042 |
|
1043 |
if (SP_level_spellpoint_cost (caster, spell_ob, SPELL_GRACE) && |
1044 |
SP_level_spellpoint_cost (caster, spell_ob, SPELL_GRACE) > op->stats.grace) |
1045 |
{ |
1046 |
if (random_roll (0, op->stats.Wis - 1, op, PREFER_HIGH) + op->stats.grace - |
1047 |
10 * SP_level_spellpoint_cost (caster, spell_ob, SPELL_GRACE) / op->stats.maxgrace > 0) |
1048 |
op->statusmsg (format ("%s grants your prayer, though you are unworthy.", godname)); |
1049 |
else |
1050 |
{ |
1051 |
prayer_failure (op, op->stats.grace, SP_level_spellpoint_cost (caster, spell_ob, SPELL_GRACE) - op->stats.grace); |
1052 |
op->failmsg (format ("%s ignores your prayer.", godname)); |
1053 |
return 0; |
1054 |
} |
1055 |
} |
1056 |
|
1057 |
/* player/monster is trying to cast the spell. might fumble it */ |
1058 |
if (spell_ob->stats.grace && random_roll (0, 99, op, PREFER_HIGH) < |
1059 |
(spell_ob->level / (float) MAX (1, op->level) * cleric_chance[op->stats.Wis])) |
1060 |
{ |
1061 |
op->contr->play_sound (sound_find ("fumble_spell")); |
1062 |
op->failmsg ("You fumble the prayer."); |
1063 |
|
1064 |
op->stats.grace -= random_roll (1, SP_level_spellpoint_cost (caster, spell_ob, SPELL_GRACE), op, PREFER_LOW); |
1065 |
return 0; |
1066 |
} |
1067 |
else if (spell_ob->stats.sp) |
1068 |
{ |
1069 |
int failure = random_roll (0, 199, op, PREFER_HIGH) - op->contr->encumbrance + op->level - spell_ob->level + 35; |
1070 |
|
1071 |
if (failure < 0) |
1072 |
{ |
1073 |
op->failmsg ("You bungle the spell because you have too much heavy equipment in use."); |
1074 |
if (settings.spell_failure_effects == TRUE) |
1075 |
spell_failure (op, failure, SP_level_spellpoint_cost (caster, spell_ob, SPELL_MANA), skill); |
1076 |
|
1077 |
op->stats.sp -= random_roll (0, SP_level_spellpoint_cost (caster, spell_ob, SPELL_MANA), op, PREFER_LOW); |
1078 |
return 0; |
1079 |
} |
1080 |
} |
1081 |
} |
1082 |
} |
1083 |
|
1084 |
int mflags = op->ms ().flags (); |
1085 |
|
1086 |
/* See if we can cast a spell here. If the caster and op are |
1087 |
* not alive, then this would mean that the mapmaker put the |
1088 |
* objects on the space - presume that they know what they are |
1089 |
* doing. |
1090 |
*/ |
1091 |
|
1092 |
if ((mflags & P_SAFE) && !QUERY_FLAG (op, FLAG_WIZCAST)) // There is _ABSOLUTELY_ no magic allowed here (except wizards :-)! |
1093 |
{ |
1094 |
op->failmsg ("This ground is sacred! The gods prevent any magical effects done by you here!"); |
1095 |
return 0; |
1096 |
} |
1097 |
|
1098 |
if ((spell_ob->type == SPELL) |
1099 |
&& (caster->type != POTION) |
1100 |
&& !QUERY_FLAG (op, FLAG_WIZCAST) |
1101 |
&& (QUERY_FLAG (caster, FLAG_ALIVE) |
1102 |
|| QUERY_FLAG (op, FLAG_ALIVE)) |
1103 |
&& (((mflags & P_NO_MAGIC) && spell_ob->stats.sp) || ((mflags & P_NO_CLERIC) && spell_ob->stats.grace))) |
1104 |
{ |
1105 |
if (op->type != PLAYER) |
1106 |
return 0; |
1107 |
|
1108 |
if ((mflags & P_NO_CLERIC) && spell_ob->stats.grace) |
1109 |
op->failmsg (format ("This ground is unholy! %s ignores you.", godname)); |
1110 |
else if (object *item = op->contr->ranged_ob) |
1111 |
{ |
1112 |
if (item->type == SPELL) |
1113 |
op->failmsg ("Something blocks your spellcasting."); |
1114 |
else if (item->type == SCROLL) |
1115 |
op->failmsg ("Something blocks the magic of your scroll."); |
1116 |
else |
1117 |
op->failmsg ("Something blocks the magic of your item."); |
1118 |
} |
1119 |
else |
1120 |
op->failmsg ("Something blocks the spell!"); |
1121 |
|
1122 |
return 0; |
1123 |
} |
1124 |
|
1125 |
/* Take into account how long it takes to cast the spell. |
1126 |
* if the player is casting it, then we use the time in |
1127 |
* the spell object. If it is a spell object, have it |
1128 |
* take two ticks. Things that cast spells on the players |
1129 |
* behalf (eg, altars, and whatever else) shouldn't cost |
1130 |
* the player any time. |
1131 |
* Ignore casting time for firewalls |
1132 |
*/ |
1133 |
if (caster == op && caster->type != FIREWALL) |
1134 |
{ |
1135 |
op->speed_left -= spell_ob->casting_time * PATH_TIME_MULT (op, spell_ob) * FABS (op->speed); |
1136 |
/* Other portions of the code may also decrement the speed of the player, so |
1137 |
* put a lower limit so that the player isn't stuck here too long |
1138 |
*/ |
1139 |
if ((spell_ob->casting_time > 0) && op->speed_left < -spell_ob->casting_time * PATH_TIME_MULT (op, spell_ob) * FABS (op->speed)) |
1140 |
op->speed_left = -spell_ob->casting_time * PATH_TIME_MULT (op, spell_ob) * FABS (op->speed); |
1141 |
} |
1142 |
else if (caster->type == WAND || caster->type == HORN || caster->type == ROD || caster->type == POTION || caster->type == SCROLL) |
1143 |
op->speed_left -= 2 * FABS (op->speed); |
1144 |
|
1145 |
if (op->type == PLAYER && op == caster) |
1146 |
{ |
1147 |
op->stats.grace -= SP_level_spellpoint_cost (caster, spell_ob, SPELL_GRACE); |
1148 |
op->stats.sp -= SP_level_spellpoint_cost (caster, spell_ob, SPELL_MANA); |
1149 |
} |
1150 |
|
1151 |
/* We want to try to find the skill to properly credit exp. |
1152 |
* for spell casting objects, the exp goes to the skill the casting |
1153 |
* object requires. |
1154 |
*/ |
1155 |
if (op != caster && !skill && caster->skill) |
1156 |
{ |
1157 |
skill = find_skill_by_name (op, caster->skill); |
1158 |
if (!skill) |
1159 |
{ |
1160 |
op->failmsg (format ("You lack the skill %s to use the %s!", &caster->skill, query_name (caster))); |
1161 |
return 0; |
1162 |
} |
1163 |
|
1164 |
op->change_skill (skill); /* needed for proper exp credit */ |
1165 |
} |
1166 |
|
1167 |
if (INVOKE_OBJECT (CAST_SPELL, spell_ob, ARG_OBJECT (op), ARG_OBJECT (caster), ARG_INT (dir), ARG_STRING (stringarg))) |
1168 |
return RESULT_INT (0); |
1169 |
|
1170 |
switch (spell_ob->subtype) |
1171 |
{ |
1172 |
/* The order of case statements is same as the order they show up |
1173 |
* in spells.h. |
1174 |
*/ |
1175 |
case SP_RAISE_DEAD: |
1176 |
success = cast_raise_dead_spell (op, caster, spell_ob, dir, stringarg); |
1177 |
break; |
1178 |
|
1179 |
case SP_RUNE: |
1180 |
success = write_rune (op, caster, spell_ob, dir, stringarg); |
1181 |
break; |
1182 |
|
1183 |
case SP_MAKE_MARK: |
1184 |
success = write_mark (op, spell_ob, stringarg); |
1185 |
break; |
1186 |
|
1187 |
case SP_BOLT: |
1188 |
success = fire_bolt (op, caster, dir, spell_ob, skill); |
1189 |
break; |
1190 |
|
1191 |
case SP_BULLET: |
1192 |
success = fire_bullet (op, caster, dir, spell_ob); |
1193 |
break; |
1194 |
|
1195 |
case SP_CONE: |
1196 |
success = cast_cone (op, caster, dir, spell_ob); |
1197 |
break; |
1198 |
|
1199 |
case SP_BOMB: |
1200 |
success = create_bomb (op, caster, dir, spell_ob); |
1201 |
break; |
1202 |
|
1203 |
case SP_WONDER: |
1204 |
success = cast_wonder (op, caster, dir, spell_ob); |
1205 |
break; |
1206 |
|
1207 |
case SP_SMITE: |
1208 |
success = cast_smite_spell (op, caster, dir, spell_ob); |
1209 |
break; |
1210 |
|
1211 |
case SP_MAGIC_MISSILE: |
1212 |
success = fire_arch_from_position (op, caster, op->x, op->y, dir, spell_ob); |
1213 |
break; |
1214 |
|
1215 |
case SP_SUMMON_GOLEM: |
1216 |
success = summon_golem (op, caster, dir, spell_ob); |
1217 |
break; |
1218 |
|
1219 |
case SP_DIMENSION_DOOR: |
1220 |
/* dimension door needs the actual caster, because that is what is |
1221 |
* moved. |
1222 |
*/ |
1223 |
success = dimension_door (op, caster, spell_ob, dir); |
1224 |
break; |
1225 |
|
1226 |
case SP_MAGIC_MAPPING: |
1227 |
if (op->type == PLAYER) |
1228 |
{ |
1229 |
spell_effect (spell_ob, op->x, op->y, op->map, op); |
1230 |
draw_magic_map (op); |
1231 |
success = 1; |
1232 |
} |
1233 |
else |
1234 |
success = 0; |
1235 |
break; |
1236 |
|
1237 |
case SP_MAGIC_WALL: |
1238 |
success = magic_wall (op, caster, dir, spell_ob); |
1239 |
break; |
1240 |
|
1241 |
case SP_DESTRUCTION: |
1242 |
success = cast_destruction (op, caster, spell_ob); |
1243 |
break; |
1244 |
|
1245 |
case SP_PERCEIVE_SELF: |
1246 |
success = perceive_self (op); |
1247 |
break; |
1248 |
|
1249 |
case SP_WORD_OF_RECALL: |
1250 |
success = cast_word_of_recall (op, caster, spell_ob); |
1251 |
break; |
1252 |
|
1253 |
case SP_INVISIBLE: |
1254 |
success = cast_invisible (op, caster, spell_ob); |
1255 |
break; |
1256 |
|
1257 |
case SP_PROBE: |
1258 |
success = probe (op, caster, spell_ob, dir); |
1259 |
break; |
1260 |
|
1261 |
case SP_HEALING: |
1262 |
success = cast_heal (op, caster, spell_ob, dir); |
1263 |
break; |
1264 |
|
1265 |
case SP_CREATE_FOOD: |
1266 |
success = cast_create_food (op, caster, spell_ob, dir, stringarg); |
1267 |
break; |
1268 |
|
1269 |
case SP_EARTH_TO_DUST: |
1270 |
success = cast_earth_to_dust (op, caster, spell_ob); |
1271 |
break; |
1272 |
|
1273 |
case SP_CHANGE_ABILITY: |
1274 |
success = cast_change_ability (op, caster, spell_ob, dir, 0); |
1275 |
break; |
1276 |
|
1277 |
case SP_BLESS: |
1278 |
success = cast_bless (op, caster, spell_ob, dir); |
1279 |
break; |
1280 |
|
1281 |
case SP_CURSE: |
1282 |
success = cast_curse (op, caster, spell_ob, dir); |
1283 |
break; |
1284 |
|
1285 |
case SP_SUMMON_MONSTER: |
1286 |
success = summon_object (op, caster, spell_ob, dir, stringarg); |
1287 |
break; |
1288 |
|
1289 |
case SP_CHARGING: |
1290 |
success = recharge (op, caster, spell_ob); |
1291 |
break; |
1292 |
|
1293 |
case SP_POLYMORPH: |
1294 |
#ifdef NO_POLYMORPH |
1295 |
/* Not great, but at least provide feedback so if players do have |
1296 |
* polymorph (ie, find it as a preset item or left over from before |
1297 |
* it was disabled), they get some feedback. |
1298 |
*/ |
1299 |
op->failmsg ("The spell fizzles!"); |
1300 |
success = 0; |
1301 |
#else |
1302 |
success = cast_polymorph (op, caster, spell_ob, dir); |
1303 |
#endif |
1304 |
break; |
1305 |
|
1306 |
case SP_ALCHEMY: |
1307 |
success = alchemy (op, caster, spell_ob); |
1308 |
break; |
1309 |
|
1310 |
case SP_REMOVE_CURSE: |
1311 |
success = remove_curse (op, caster, spell_ob); |
1312 |
break; |
1313 |
|
1314 |
case SP_IDENTIFY: |
1315 |
success = cast_identify (op, caster, spell_ob); |
1316 |
break; |
1317 |
|
1318 |
case SP_DETECTION: |
1319 |
success = cast_detection (op, caster, spell_ob, skill); |
1320 |
break; |
1321 |
|
1322 |
case SP_MOOD_CHANGE: |
1323 |
success = mood_change (op, caster, spell_ob); |
1324 |
break; |
1325 |
|
1326 |
case SP_MOVING_BALL: |
1327 |
if (spell_ob->path_repelled && (spell_ob->path_repelled & caster->path_attuned) != spell_ob->path_repelled) |
1328 |
{ |
1329 |
op->failmsg (format ("You lack the proper attunement to cast %s!", &spell_ob->name)); |
1330 |
success = 0; |
1331 |
} |
1332 |
else |
1333 |
success = fire_arch_from_position (op, caster, op->x, op->y, dir, spell_ob); |
1334 |
break; |
1335 |
|
1336 |
case SP_SWARM: |
1337 |
success = fire_swarm (op, caster, spell_ob, dir); |
1338 |
break; |
1339 |
|
1340 |
case SP_CHANGE_MANA: |
1341 |
success = cast_transfer (op, caster, spell_ob, dir); |
1342 |
break; |
1343 |
|
1344 |
case SP_DISPEL_RUNE: |
1345 |
/* in rune.c */ |
1346 |
success = dispel_rune (op, caster, spell_ob, skill, dir); |
1347 |
break; |
1348 |
|
1349 |
case SP_CREATE_MISSILE: |
1350 |
success = cast_create_missile (op, caster, spell_ob, dir, stringarg); |
1351 |
break; |
1352 |
|
1353 |
case SP_CONSECRATE: |
1354 |
success = cast_consecrate (op, caster, spell_ob); |
1355 |
break; |
1356 |
|
1357 |
case SP_ANIMATE_WEAPON: |
1358 |
success = animate_weapon (op, caster, spell_ob, dir); |
1359 |
break; |
1360 |
|
1361 |
case SP_LIGHT: |
1362 |
success = cast_light (op, caster, spell_ob, dir); |
1363 |
break; |
1364 |
|
1365 |
case SP_CHANGE_MAP_LIGHT: |
1366 |
success = cast_change_map_lightlevel (op, caster, spell_ob); |
1367 |
break; |
1368 |
|
1369 |
case SP_FAERY_FIRE: |
1370 |
success = cast_destruction (op, caster, spell_ob); |
1371 |
break; |
1372 |
|
1373 |
case SP_CAUSE_DISEASE: |
1374 |
success = cast_cause_disease (op, caster, spell_ob, dir); |
1375 |
break; |
1376 |
|
1377 |
case SP_AURA: |
1378 |
success = create_aura (op, caster, spell_ob); |
1379 |
break; |
1380 |
|
1381 |
case SP_PARTY_SPELL: |
1382 |
success = cast_party_spell (op, caster, dir, spell_ob, stringarg); |
1383 |
break; |
1384 |
|
1385 |
default: |
1386 |
LOG (llevError, "cast_spell: Unhandled spell subtype %d\n", spell_ob->subtype); |
1387 |
} |
1388 |
|
1389 |
op->play_sound ( |
1390 |
success |
1391 |
? spell_ob->sound |
1392 |
? spell_ob->sound |
1393 |
: sound_find ("spell_success") |
1394 |
: sound_find ("fumble_spell") |
1395 |
); |
1396 |
|
1397 |
return success; |
1398 |
} |
1399 |
|
1400 |
/* This is called from time.c/process_object(). That function |
1401 |
* calls this for any SPELL_EFFECT type objects. This function |
1402 |
* then dispatches them to the appropriate specific routines. |
1403 |
*/ |
1404 |
void |
1405 |
move_spell_effect (object *op) |
1406 |
{ |
1407 |
switch (op->subtype) |
1408 |
{ |
1409 |
case SP_BOLT: |
1410 |
move_bolt (op); |
1411 |
break; |
1412 |
|
1413 |
case SP_BULLET: |
1414 |
move_bullet (op); |
1415 |
break; |
1416 |
|
1417 |
case SP_EXPLOSION: |
1418 |
explosion (op); |
1419 |
break; |
1420 |
|
1421 |
case SP_CONE: |
1422 |
move_cone (op); |
1423 |
break; |
1424 |
|
1425 |
case SP_BOMB: |
1426 |
animate_bomb (op); |
1427 |
break; |
1428 |
|
1429 |
case SP_MAGIC_MISSILE: |
1430 |
move_missile (op); |
1431 |
break; |
1432 |
|
1433 |
case SP_WORD_OF_RECALL: |
1434 |
execute_word_of_recall (op); |
1435 |
break; |
1436 |
|
1437 |
case SP_MOVING_BALL: |
1438 |
move_ball_spell (op); |
1439 |
break; |
1440 |
|
1441 |
case SP_SWARM: |
1442 |
move_swarm_spell (op); |
1443 |
break; |
1444 |
|
1445 |
case SP_AURA: |
1446 |
move_aura (op); |
1447 |
break; |
1448 |
} |
1449 |
} |
1450 |
|
1451 |
/* this checks to see if something special should happen if |
1452 |
* something runs into the object. |
1453 |
*/ |
1454 |
void |
1455 |
check_spell_effect (object *op) |
1456 |
{ |
1457 |
switch (op->subtype) |
1458 |
{ |
1459 |
case SP_BOLT: |
1460 |
move_bolt (op); |
1461 |
return; |
1462 |
|
1463 |
case SP_BULLET: |
1464 |
check_bullet (op); |
1465 |
return; |
1466 |
} |
1467 |
} |
1468 |
|
1469 |
/* This is called by move_apply. Basically, if someone |
1470 |
* moves onto a spell effect and the walk_on or fly_on flags |
1471 |
* are set, this is called. This should only be called for |
1472 |
* objects of the appropriate type. |
1473 |
*/ |
1474 |
void |
1475 |
apply_spell_effect (object *spell, object *victim) |
1476 |
{ |
1477 |
switch (spell->subtype) |
1478 |
{ |
1479 |
case SP_CONE: |
1480 |
if (QUERY_FLAG (victim, FLAG_ALIVE) && spell->speed && spell->attacktype) |
1481 |
hit_player (victim, spell->stats.dam, spell, spell->attacktype, 0); |
1482 |
break; |
1483 |
|
1484 |
case SP_MAGIC_MISSILE: |
1485 |
if (QUERY_FLAG (victim, FLAG_ALIVE)) |
1486 |
{ |
1487 |
hit_player (victim, spell->stats.dam, spell, spell->attacktype, 1); |
1488 |
spell->destroy (); |
1489 |
} |
1490 |
break; |
1491 |
|
1492 |
case SP_MOVING_BALL: |
1493 |
if (QUERY_FLAG (victim, FLAG_ALIVE)) |
1494 |
hit_player (victim, spell->stats.dam, spell, spell->attacktype, 1); |
1495 |
else if (victim->materialname) |
1496 |
save_throw_object (victim, spell->attacktype, spell); |
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 |
} |