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/* |
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* This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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* |
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* Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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* Copyright (©) 2002 Mark Wedel & Crossfire Development Team |
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* Copyright (©) 1992 Frank Tore Johansen |
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* |
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* Deliantra is free software: you can redistribute it and/or modify it under |
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* the terms of the Affero GNU General Public License as published by the |
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* Free Software Foundation, either version 3 of the License, or (at your |
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* option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the Affero GNU General Public License |
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* and the GNU General Public License along with this program. If not, see |
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* <http://www.gnu.org/licenses/>. |
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* |
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* The authors can be reached via e-mail to <support@deliantra.net> |
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*/ |
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|
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/* Created July 95 to separate skill utilities from actual skills -b.t. */ |
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|
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/* Reconfigured skills code to allow linking of skills to experience |
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* categories. This is done solely through the init_new_exp_system() fctn. |
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* June/July 1995 -b.t. thomas@astro.psu.edu |
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*/ |
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|
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/* July 1995 - Initial associated skills coding. Experience gains |
33 |
* come solely from the use of skills. Overcoming an opponent (in combat, |
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* finding/disarming a trap, stealing from somebeing, etc) gains |
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* experience. Calc_skill_exp() handles the gained experience using |
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* modifications in the skills[] table. - b.t. |
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*/ |
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|
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/* define the following for skills utility debuging */ |
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|
41 |
/* #define SKILL_UTIL_DEBUG */ |
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|
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#include <global.h> |
44 |
#include <object.h> |
45 |
#include <sproto.h> |
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#include <living.h> /* for defs of STR,CON,DEX,etc. -b.t. */ |
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#include <spells.h> |
48 |
|
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const uint8_t skill_flags[NUM_SKILLS] = { |
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0, // SK_NONE |
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# define def(uc, flags) flags, |
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# include "skillinc.h" |
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# undef def |
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}; |
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|
56 |
static int attack_hth (object *pl, int dir, const char *string, object *skill); |
57 |
static int attack_melee_weapon (object *op, int dir, const char *string, object *skill); |
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|
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/* init_skills basically just sets up the skill_names table |
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* above. The index into the array is set up by the |
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* subtypes. |
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*/ |
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void |
64 |
init_skills () |
65 |
{ |
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for_all_archetypes (at) |
67 |
if (at->type == SKILL) |
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{ |
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if (skill_names[at->subtype]) |
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LOG (llevError, "init_skills: multiple skill using same subtype %d, %s, %s\n", |
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at->subtype, &skill_names[at->subtype], &at->skill); |
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else |
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skill_names[at->subtype] = at->skill; |
74 |
} |
75 |
|
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/* This isn't really an error if there is no skill subtype set, but |
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* checking for this may catch some user errors. |
78 |
*/ |
79 |
for (int i = 1; i < NUM_SKILLS; i++) |
80 |
if (!skill_names[i]) |
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LOG (llevError, "init_skills: skill subtype %d doesn't have a name?\n", i); |
82 |
} |
83 |
|
84 |
/* This function goes through the player inventory and sets |
85 |
* up the last_skills[] array in the player object. |
86 |
* the last_skills[] is used to more quickly lookup skills - |
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* mostly used for sending exp. |
88 |
*/ |
89 |
void |
90 |
player::link_skills () |
91 |
{ |
92 |
for (int i = 0; i < NUM_SKILLS; ++i) |
93 |
last_skill_ob [i] = 0; |
94 |
|
95 |
for (object *tmp = ob->inv; tmp; tmp = tmp->below) |
96 |
if (tmp->type == SKILL) |
97 |
{ |
98 |
assert (IN_RANGE_EXC (tmp->subtype, 0, NUM_SKILLS)); |
99 |
|
100 |
if (last_skill_ob [tmp->subtype] != tmp) |
101 |
{ |
102 |
/* This is really a warning, hence no else below */ |
103 |
if (last_skill_ob [tmp->subtype]) |
104 |
LOG (llevError, "Multiple skills with the same subtype? %s, %s\n", |
105 |
&last_skill_ob [tmp->subtype]->skill, &tmp->skill); |
106 |
|
107 |
last_skill_ob [tmp->subtype] = tmp; |
108 |
if (ns) |
109 |
ns->last_skill_exp [tmp->subtype] = -1; |
110 |
} |
111 |
} |
112 |
} |
113 |
|
114 |
static object * |
115 |
find_skill (object *who, shstr_cmp name) |
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{ |
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if (who->chosen_skill |
118 |
&& who->chosen_skill->skill == name |
119 |
&& who->chosen_skill->type == SKILL) |
120 |
return who->chosen_skill; |
121 |
|
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for (object *tmp = who->inv; tmp; tmp = tmp->below) |
123 |
if (tmp->skill == name && tmp->type == SKILL) |
124 |
return splay (tmp); |
125 |
|
126 |
return 0; |
127 |
} |
128 |
|
129 |
object * |
130 |
player::find_skill (shstr_cmp name) const |
131 |
{ |
132 |
// might want to use last_skill_obj at one point, or maybe not |
133 |
return ::find_skill (ob, name); |
134 |
} |
135 |
|
136 |
/* This returns the skill pointer of the given name (the |
137 |
* one that accumulates exp, has the level, etc). |
138 |
* |
139 |
* It is presumed that the player will be needing to actually |
140 |
* use the skill, so thus if use of the skill requires a skill |
141 |
* tool, this code will equip it. |
142 |
*/ |
143 |
object * |
144 |
find_skill_by_name (object *who, shstr_cmp sh) |
145 |
{ |
146 |
object *skill_tool = 0; |
147 |
|
148 |
for (object *tmp = who->inv; tmp; tmp = tmp->below) |
149 |
if (tmp->skill == sh) |
150 |
{ |
151 |
if (tmp->type == SKILL && (tmp->flag [FLAG_CAN_USE_SKILL] || tmp->flag [FLAG_APPLIED])) |
152 |
/* If this is a skill that can be used without applying tool, return it */ |
153 |
return splay (tmp); |
154 |
/* Try to find appropriate skilltool. If the player has one already |
155 |
* applied, we try to keep using that one. |
156 |
*/ |
157 |
else if (tmp->type == SKILL_TOOL && !skill_tool) |
158 |
skill_tool = tmp; |
159 |
} |
160 |
|
161 |
if (!skill_tool) |
162 |
return 0; |
163 |
|
164 |
/* Player has a tool to use the skill. If not applied, apply it - |
165 |
* if not successful, return null. If they do have the skill tool |
166 |
* but not the skill itself, give it to them. |
167 |
*/ |
168 |
object *skill = who->give_skill (skill_tool->skill); |
169 |
|
170 |
if (!skill_tool->flag [FLAG_APPLIED]) |
171 |
if (!who->apply (splay (skill_tool))) |
172 |
return 0; |
173 |
|
174 |
return splay (skill); |
175 |
} |
176 |
|
177 |
object * |
178 |
find_skill_by_name_fuzzy (object *who, const char *name) |
179 |
{ |
180 |
if (name) |
181 |
for (object *tmp = who->inv; tmp; tmp = tmp->below) |
182 |
if ((tmp->type == SKILL || tmp->type == SKILL_TOOL) |
183 |
&& tmp->skill.starts_with (name)) |
184 |
if (object *skop = find_skill_by_name (who, tmp->skill)) |
185 |
return skop; |
186 |
|
187 |
return 0; |
188 |
} |
189 |
|
190 |
/* This returns the skill pointer of the given name (the |
191 |
* one that accumulates exp, has the level, etc). |
192 |
* |
193 |
* It is presumed that the player will be needing to actually |
194 |
* use the skill, so thus if use of the skill requires a skill |
195 |
* tool, this code will equip it. |
196 |
* |
197 |
* This code is basically the same as find_skill_by_name() above, |
198 |
* but instead a skill name, we search by matching number. |
199 |
* this replaces find_skill. |
200 |
*/ |
201 |
object * |
202 |
find_skill_by_number (object *who, int skillno) |
203 |
{ |
204 |
for (object *tmp = who->inv; tmp; tmp = tmp->below) |
205 |
if (tmp->type == SKILL && tmp->subtype == skillno) |
206 |
if (object *skop = find_skill_by_name (who, tmp->skill)) |
207 |
return skop; |
208 |
|
209 |
return 0; |
210 |
} |
211 |
|
212 |
object * |
213 |
object::give_skill (shstr_cmp name, bool can_use) |
214 |
{ |
215 |
object *skill = find_skill (this, name); |
216 |
|
217 |
if (!skill) |
218 |
skill = give_skill_by_name (this, name); |
219 |
|
220 |
if (skill && can_use) |
221 |
skill->flag [FLAG_CAN_USE_SKILL] = true; |
222 |
|
223 |
return skill; |
224 |
} |
225 |
|
226 |
/* do_skill() - Main skills use function-similar in scope to cast_spell(). |
227 |
* We handle all requests for skill use outside of some combat here. |
228 |
* We require a separate routine outside of fire() so as to allow monsters |
229 |
* to utilize skills. Returns 1 on use of skill, otherwise 0. |
230 |
* This is changed (2002-11-30) from the old method that returned |
231 |
* exp - no caller needed that info, but it also prevented the callers |
232 |
* from know if a skill was actually used, as many skills don't |
233 |
* give any exp for their direct use (eg, throwing). |
234 |
* It returns 0 if no skill was used. |
235 |
*/ |
236 |
int |
237 |
do_skill (object *op, object *part, object *skill, int dir, const char *string) |
238 |
{ |
239 |
int success = 0, exp = 0; |
240 |
|
241 |
if (!skill) |
242 |
return 0; |
243 |
|
244 |
/* The code below presumes that the skill points to the object that |
245 |
* holds the exp, level, etc of the skill. So if this is a player |
246 |
* go and try to find the actual real skill pointer, and if the |
247 |
* the player doesn't have a bucket for that, create one. |
248 |
*/ |
249 |
if (skill->type != SKILL && op->type == PLAYER) |
250 |
{ |
251 |
for (object *tmp = op->inv; tmp; tmp = tmp->below) |
252 |
if (tmp->type == SKILL && tmp->skill == skill->skill) |
253 |
{ |
254 |
skill = tmp; |
255 |
goto found; |
256 |
} |
257 |
|
258 |
skill = give_skill_by_name (op, skill->skill); |
259 |
found: ; |
260 |
} |
261 |
|
262 |
// skill, by_whom, on_which_object, which direction, skill_argument |
263 |
if (INVOKE_OBJECT (USE_SKILL, skill, ARG_OBJECT (op), ARG_OBJECT (part), ARG_INT (dir), ARG_STRING (string))) |
264 |
return 0; |
265 |
|
266 |
switch (skill->subtype) |
267 |
{ |
268 |
case SK_LEVITATION: |
269 |
/* Not 100% sure if this will work with new movement code - |
270 |
* the levitation skill has move_type for flying, so when |
271 |
* equipped, that should transfer to player, when not, |
272 |
* shouldn't. |
273 |
*/ |
274 |
if (skill->flag [FLAG_APPLIED]) |
275 |
{ |
276 |
skill->clr_flag (FLAG_APPLIED); |
277 |
new_draw_info (NDI_UNIQUE, 0, op, "You come to earth."); |
278 |
} |
279 |
else |
280 |
{ |
281 |
skill->set_flag (FLAG_APPLIED); |
282 |
new_draw_info (NDI_UNIQUE, 0, op, "You rise into the air!"); |
283 |
} |
284 |
|
285 |
op->update_stats (); |
286 |
success = 1; |
287 |
break; |
288 |
|
289 |
case SK_STEALING: |
290 |
exp = success = steal (op, dir, skill); |
291 |
break; |
292 |
|
293 |
case SK_LOCKPICKING: |
294 |
exp = success = pick_lock (op, dir, skill); |
295 |
break; |
296 |
|
297 |
case SK_HIDING: |
298 |
exp = success = hide (op, skill); |
299 |
break; |
300 |
|
301 |
case SK_JUMPING: |
302 |
exp = success = jump (op, dir, skill); |
303 |
break; |
304 |
|
305 |
case SK_INSCRIPTION: |
306 |
exp = success = write_on_item (op, string, skill); |
307 |
break; |
308 |
|
309 |
case SK_MEDITATION: |
310 |
meditate (op, skill); |
311 |
success = 1; |
312 |
break; |
313 |
/* note that the following 'attack' skills gain exp through hit_player() */ |
314 |
|
315 |
case SK_KARATE: |
316 |
attack_hth (op, dir, "karate-chopped", skill); |
317 |
break; |
318 |
|
319 |
case SK_PUNCHING: |
320 |
attack_hth (op, dir, "punched", skill); |
321 |
break; |
322 |
|
323 |
case SK_FLAME_TOUCH: |
324 |
attack_hth (op, dir, "flamed", skill); |
325 |
break; |
326 |
|
327 |
case SK_SPARK_TOUCH: |
328 |
attack_hth (op, dir, "zapped", skill); |
329 |
break; |
330 |
|
331 |
case SK_SHIVER: |
332 |
attack_hth (op, dir, "froze", skill); |
333 |
break; |
334 |
|
335 |
case SK_ACID_SPLASH: |
336 |
attack_hth (op, dir, "dissolved", skill); |
337 |
break; |
338 |
|
339 |
case SK_POISON_NAIL: |
340 |
attack_hth (op, dir, "injected poison into", skill); |
341 |
break; |
342 |
|
343 |
case SK_CLAWING: |
344 |
attack_hth (op, dir, "clawed", skill); |
345 |
break; |
346 |
|
347 |
case SK_ONE_HANDED_WEAPON: |
348 |
case SK_TWO_HANDED_WEAPON: |
349 |
attack_melee_weapon (op, dir, NULL, skill); |
350 |
break; |
351 |
|
352 |
case SK_FIND_TRAPS: |
353 |
exp = success = find_traps (op, skill); |
354 |
break; |
355 |
|
356 |
case SK_SINGING: |
357 |
exp = success = singing (op, dir, skill); |
358 |
break; |
359 |
|
360 |
case SK_ORATORY: |
361 |
exp = success = use_oratory (op, dir, skill); |
362 |
break; |
363 |
|
364 |
case SK_SMITHERY: |
365 |
case SK_BOWYER: |
366 |
case SK_JEWELER: |
367 |
case SK_ALCHEMY: |
368 |
case SK_THAUMATURGY: |
369 |
case SK_LITERACY: |
370 |
case SK_WOODSMAN: |
371 |
/* first, we try to find a cauldron, and do the alchemy thing. |
372 |
* failing that, we go and identify stuff. |
373 |
*/ |
374 |
{ |
375 |
bool found_cauldron = false; |
376 |
|
377 |
for (object *next, *tmp = GET_MAP_OB (op->map, op->x, op->y); tmp; tmp = next) |
378 |
{ |
379 |
next = tmp->above; |
380 |
|
381 |
if (tmp->flag [FLAG_IS_CAULDRON]) |
382 |
{ |
383 |
found_cauldron = true; |
384 |
|
385 |
if (tmp->skill != skill->skill) |
386 |
{ |
387 |
op->failmsgf ("You can't use the %s with the %s skill!", |
388 |
query_name (tmp), |
389 |
query_name (skill)); |
390 |
break; |
391 |
} |
392 |
|
393 |
attempt_do_alchemy (op, tmp, skill); |
394 |
|
395 |
if (tmp->flag [FLAG_APPLIED]) |
396 |
esrv_send_inventory (op, tmp); |
397 |
} |
398 |
} |
399 |
|
400 |
if (!found_cauldron) |
401 |
exp = success = skill_ident (op, skill); |
402 |
} |
403 |
break; |
404 |
|
405 |
case SK_DET_MAGIC: |
406 |
case SK_DET_CURSE: |
407 |
exp = success = skill_ident (op, skill); |
408 |
break; |
409 |
|
410 |
case SK_DISARM_TRAPS: |
411 |
exp = success = remove_trap (op, dir, skill); |
412 |
break; |
413 |
|
414 |
case SK_THROWING: |
415 |
success = skill_throw (op, part, dir, string, skill); |
416 |
break; |
417 |
|
418 |
case SK_SET_TRAP: |
419 |
new_draw_info (NDI_UNIQUE, 0, op, "This skill is not currently implemented."); |
420 |
break; |
421 |
|
422 |
case SK_USE_MAGIC_ITEM: |
423 |
case SK_MISSILE_WEAPON: |
424 |
new_draw_info (NDI_UNIQUE, 0, op, "There is no special attack for this skill."); |
425 |
break; |
426 |
|
427 |
case SK_PRAYING: |
428 |
success = pray (op, skill); |
429 |
break; |
430 |
|
431 |
case SK_BARGAINING: |
432 |
success = describe_shop (op); |
433 |
break; |
434 |
|
435 |
case SK_SORCERY: |
436 |
case SK_EVOCATION: |
437 |
case SK_PYROMANCY: |
438 |
case SK_SUMMONING: |
439 |
case SK_CLIMBING: |
440 |
new_draw_info (NDI_UNIQUE, 0, op, "This skill is already in effect."); |
441 |
break; |
442 |
|
443 |
case SK_MINING: |
444 |
success = skill_mining (op, part, skill, dir, string); |
445 |
break; |
446 |
|
447 |
case SK_FISHING: |
448 |
success = skill_fishing (op, part, skill, dir, string); |
449 |
break; |
450 |
|
451 |
default: |
452 |
LOG (llevDebug, "%s attempted to use unknown skill: %d\n", query_name (op), op->chosen_skill->stats.sp); |
453 |
break; |
454 |
} |
455 |
|
456 |
/* For players we now update the speed_left from using the skill. |
457 |
* Monsters have no skill use time because of the random nature in |
458 |
* which use_monster_skill is called already simulates this. |
459 |
* If certain skills should take more/less time, that should be |
460 |
* in the code for the skill itself. |
461 |
*/ |
462 |
if (op->type == PLAYER) |
463 |
op->speed_left -= 1.f; |
464 |
|
465 |
/* this is a good place to add experience for successfull use of skills. |
466 |
* Note that add_exp() will figure out player/monster experience |
467 |
* gain problems. |
468 |
*/ |
469 |
|
470 |
if (success && exp) |
471 |
change_exp (op, exp, skill->skill, 0); |
472 |
|
473 |
return success; |
474 |
} |
475 |
|
476 |
/* calc_skill_exp() - calculates amount of experience can be gained for |
477 |
* successfull use of a skill. Returns value of experience gain. |
478 |
* Here we take the view that a player must 'overcome an opponent' |
479 |
* in order to gain experience. Examples include foes killed combat, |
480 |
* finding/disarming a trap, stealing from somebeing, etc. |
481 |
* The gained experience is based primarily on the difference in levels, |
482 |
* exp point value of vanquished foe, the relevent stats of the skill being |
483 |
* used and modifications in the skills[] table. |
484 |
* |
485 |
* For now, monsters and players will be treated differently. Below I give |
486 |
* the algorithm for *PLAYER* experience gain. Monster exp gain is simpler. |
487 |
* Monsters just get 10% of the exp of the opponent. |
488 |
* |
489 |
* players get a ratio, eg, opponent lvl / player level. This is then |
490 |
* multiplied by various things. If simple exp is true, then |
491 |
* this multiplier, include the level difference, is always 1. |
492 |
* This revised method prevents some cases where there are big gaps |
493 |
* in the amount you get just because you are now equal level vs lower |
494 |
* level |
495 |
* who is player/creature that used the skill. |
496 |
* op is the object that was 'defeated'. |
497 |
* skill is the skill used. If no skill is used, it should just |
498 |
* point back to who. |
499 |
* |
500 |
*/ |
501 |
int |
502 |
calc_skill_exp (object *who, object *op, object *skill) |
503 |
{ |
504 |
int op_exp = 0, op_lvl = 0; |
505 |
float base, value, lvl_mult = 0.0; |
506 |
|
507 |
if (!skill) |
508 |
skill = who; |
509 |
|
510 |
/* Oct 95 - where we have an object, I expanded our treatment |
511 |
* to 3 cases: |
512 |
* non-living magic obj, runes and everything else. |
513 |
* |
514 |
* If an object is not alive and magical we set the base exp higher to |
515 |
* help out exp awards for skill_ident skills. Also, if |
516 |
* an item is type RUNE, we give out exp based on stats.Cha |
517 |
* and level (this was the old system) -b.t. |
518 |
*/ |
519 |
if (!op) |
520 |
{ /* no item/creature */ |
521 |
op_lvl = max (1, who->map->difficulty); |
522 |
op_exp = 0; |
523 |
} |
524 |
else if (op->type == RUNE || op->type == TRAP) |
525 |
{ /* all traps. If stats.Cha > 1 we use that |
526 |
* for the amount of experience */ |
527 |
op_exp = op->stats.Cha > 1 ? op->stats.Cha : op->stats.exp; |
528 |
op_lvl = op->level; |
529 |
} |
530 |
else |
531 |
{ /* all other items/living creatures */ |
532 |
op_exp = op->stats.exp; |
533 |
op_lvl = op->level; |
534 |
if (!op->flag [FLAG_ALIVE]) |
535 |
op_lvl += 5 * abs (op->magic); /* for ident/make items */ |
536 |
} |
537 |
|
538 |
if (op_lvl < 1) |
539 |
op_lvl = 1; |
540 |
|
541 |
if (who->type != PLAYER) |
542 |
{ /* for monsters only */ |
543 |
return ((int) (op_exp * 0.1) + 1); /* we add one to insure positive value is returned */ |
544 |
} |
545 |
else |
546 |
{ /* for players */ |
547 |
base = op_exp; |
548 |
/* if skill really is a skill, then we can look at the skill archetype for |
549 |
* bse reward value (exp) and level multiplier factor. |
550 |
*/ |
551 |
if (skill->type == SKILL) |
552 |
{ |
553 |
base += skill->arch->stats.exp; |
554 |
if (settings.simple_exp) |
555 |
{ |
556 |
if (skill->arch->level) |
557 |
lvl_mult = (float) skill->arch->level / 100.0; |
558 |
else |
559 |
lvl_mult = 1.0; /* no adjustment */ |
560 |
} |
561 |
else |
562 |
{ |
563 |
if (skill->level) |
564 |
lvl_mult = ((float) skill->arch->level * (float) op_lvl) / ((float) skill->level * 100.0); |
565 |
else |
566 |
lvl_mult = 1.0; |
567 |
} |
568 |
} |
569 |
else |
570 |
{ |
571 |
/* Don't divide by zero here! */ |
572 |
lvl_mult = (float) op_lvl / (float) max (1, skill->level); |
573 |
} |
574 |
} |
575 |
|
576 |
/* assemble the exp total, and return value */ |
577 |
|
578 |
value = base * lvl_mult; |
579 |
if (value < 1) |
580 |
value = 1; /* Always give at least 1 exp point */ |
581 |
|
582 |
#ifdef SKILL_UTIL_DEBUG |
583 |
LOG (llevDebug, "calc_skill_exp(): who: %s(lvl:%d) op:%s(lvl:%d)\n", who->name, skill->level, op->name, op_lvl); |
584 |
#endif |
585 |
return ((int) value); |
586 |
} |
587 |
|
588 |
/* Learn skill. This inserts the requested skill in the player's |
589 |
* inventory. The skill field of the scroll should have the |
590 |
* exact name of the requested skill. |
591 |
* This one actually teaches the player the skill as something |
592 |
* they can equip. |
593 |
* Return 0 if the player knows the skill, 1 if the |
594 |
* player learns the skill, 2 otherwise. |
595 |
*/ |
596 |
int |
597 |
learn_skill (object *pl, object *scroll) |
598 |
{ |
599 |
if (!scroll->skill) |
600 |
{ |
601 |
LOG (llevError, "skill scroll %s does not have skill pointer set.\n", &scroll->name); |
602 |
return 2; |
603 |
} |
604 |
|
605 |
object *tmp = find_skill (pl, scroll->skill); |
606 |
|
607 |
/* player already knows it */ |
608 |
if (tmp && tmp->flag [FLAG_CAN_USE_SKILL]) |
609 |
return 0; |
610 |
|
611 |
/* now a random change to learn, based on player Int. |
612 |
* give bonus based on level - otherwise stupid characters |
613 |
* might never be able to learn anything. |
614 |
*/ |
615 |
if (random_roll (0, 99, pl, PREFER_LOW) > (learn_spell[pl->stats.Int] + (pl->level / 5))) |
616 |
return 2; /* failure :< */ |
617 |
|
618 |
if (!tmp) |
619 |
tmp = give_skill_by_name (pl, scroll->skill); |
620 |
|
621 |
if (!tmp) |
622 |
{ |
623 |
LOG (llevError, "skill scroll %s does not have valid skill name (%s).\n", &scroll->name, &scroll->skill); |
624 |
return 2; |
625 |
} |
626 |
|
627 |
tmp->set_flag (FLAG_CAN_USE_SKILL); |
628 |
|
629 |
return 1; |
630 |
} |
631 |
|
632 |
/* Gives a percentage clipped to 0% -> 100% of a/b. */ |
633 |
/* Probably belongs in some global utils-type file? */ |
634 |
static int |
635 |
clipped_percent (sint64 a, sint64 b) |
636 |
{ |
637 |
int rv; |
638 |
|
639 |
if (b <= 0) |
640 |
return 0; |
641 |
|
642 |
rv = (int) ((100.0f * ((float) a) / ((float) b)) + 0.5f); |
643 |
|
644 |
if (rv < 0) |
645 |
return 0; |
646 |
else if (rv > 100) |
647 |
return 100; |
648 |
|
649 |
return rv; |
650 |
} |
651 |
|
652 |
/* show_skills() - Meant to allow players to examine |
653 |
* their current skill list. |
654 |
* This shows the amount of exp they have in the skills. |
655 |
* we also include some other non skill related info (god, |
656 |
* max weapon improvments, item power). |
657 |
* Note this function is a bit more complicated becauase we |
658 |
* we want ot sort the skills before printing them. If we |
659 |
* just dumped this as we found it, this would be a bit |
660 |
* simpler. |
661 |
*/ |
662 |
//TODO: egad, do it in perl, do not suffer from the big buffer on stack, make it one single drawinfo. |
663 |
void |
664 |
show_skills (object *pl, const char *search) |
665 |
{ |
666 |
const char *cp; |
667 |
int i, num_skills_found = 0; |
668 |
const char *const periods = ".............................."; // 30 |
669 |
|
670 |
/* Need to have a pointer and use strdup for qsort to work properly */ |
671 |
char skills[NUM_SKILLS][128]; // d'oh |
672 |
|
673 |
object *op = pl->contr->ob; |
674 |
|
675 |
for (object *tmp = op->inv; tmp; tmp = tmp->below) |
676 |
{ |
677 |
if (tmp->type == SKILL) |
678 |
{ |
679 |
if (search && !tmp->name.contains (search)) |
680 |
continue; |
681 |
|
682 |
char buf[30]; |
683 |
|
684 |
/* Basically want to fill this out to 30 spaces with periods */ |
685 |
snprintf (buf, sizeof (buf), "%s%s", &tmp->name, periods); |
686 |
|
687 |
if (settings.permanent_exp_ratio) |
688 |
snprintf (skills[num_skills_found++], sizeof (skills [0]), "%slvl:%3d (xp:%" PRId64 "/%" PRId64 "/%d%%)", |
689 |
buf, tmp->level, tmp->stats.exp, |
690 |
level_exp (tmp->level + 1, op->expmul), clipped_percent (tmp->perm_exp, tmp->stats.exp)); |
691 |
else |
692 |
snprintf (skills[num_skills_found++], sizeof (skills [0]), "%slvl:%3d (xp:%" PRId64 "/%" PRId64 ")", |
693 |
buf, tmp->level, tmp->stats.exp, level_exp (tmp->level + 1, op->expmul)); |
694 |
|
695 |
/* I don't know why some characters get a bunch of skills, but |
696 |
* it sometimes happens (maybe a leftover from bugier earlier code |
697 |
* and those character are still about). In any case, lets handle |
698 |
* it so it doesn't crash the server - otherwise, one character may |
699 |
* crash the server numerous times. |
700 |
*/ |
701 |
if (num_skills_found >= NUM_SKILLS) |
702 |
{ |
703 |
new_draw_info (NDI_RED | NDI_REPLY, 0, op, "Your character has too many skills."); |
704 |
new_draw_info (NDI_RED | NDI_REPLY, 0, op, "Something isn't right - contact the server admin"); |
705 |
break; |
706 |
} |
707 |
} |
708 |
} |
709 |
|
710 |
dynbuf_text &msg = msg_dynbuf; msg.clear (); |
711 |
|
712 |
msg << "T<Player skills:>\n\n"; |
713 |
if (num_skills_found > 1) |
714 |
qsort (skills, num_skills_found, sizeof (skills [0]), (int (*)(const void *, const void *)) std::strcmp); |
715 |
|
716 |
for (i = 0; i < num_skills_found; i++) |
717 |
msg << " C<" << skills [i] << ">\n"; |
718 |
|
719 |
msg << "\nYou can handle " << op->level / 5 + 5 << " weapon improvements.\r"; |
720 |
|
721 |
cp = determine_god (op); |
722 |
msg << "You worship " << (cp ? cp : "no god at current time") << ".\r"; |
723 |
|
724 |
msg << "Your equipped item power is " << (int)op->contr->item_power |
725 |
<< " out of " << int (op->level * settings.item_power_factor) |
726 |
<< ".\n"; |
727 |
|
728 |
pl->contr->infobox (MSG_CHANNEL ("skills"), msg); |
729 |
} |
730 |
|
731 |
/* use_skill() - similar to invoke command, it executes the skill in the |
732 |
* direction that the user is facing. Returns false if we are unable to |
733 |
* change to the requested skill, or were unable to use the skill properly. |
734 |
* This is tricky because skills can have spaces. We basically roll |
735 |
* our own find_skill_by_name so we can try to do better string matching. |
736 |
*/ |
737 |
int |
738 |
use_skill (object *op, const char *string) |
739 |
{ |
740 |
object *skop; |
741 |
size_t len; |
742 |
|
743 |
if (!string) |
744 |
return 0; |
745 |
|
746 |
for (skop = op->inv; skop; skop = skop->below) |
747 |
if ((skop->type == SKILL || skop->type == SKILL_TOOL) |
748 |
&& !strncmp (string, skop->skill, min (strlen (string), strlen (skop->skill)))) |
749 |
{ |
750 |
skop = find_skill_by_name (op, skop->skill); |
751 |
break; |
752 |
} |
753 |
|
754 |
if (!skop) |
755 |
{ |
756 |
op->failmsgf ("Unable to find skill %s.", string); |
757 |
return 0; |
758 |
} |
759 |
|
760 |
if (!(skill_flags [skop->subtype] & SF_USE)) |
761 |
{ |
762 |
op->failmsgf ( |
763 |
"You feel as if you wanted to do something funny, but you can't remember what. " |
764 |
"H<The %s skill cannot be C<use_skill>'ed - maybe you need to C<ready_skill> it, " |
765 |
"use it with some item, or it's always active.>", |
766 |
&skop->skill |
767 |
); |
768 |
return 0; |
769 |
} |
770 |
|
771 |
len = strlen (skop->skill); |
772 |
|
773 |
/* All this logic goes and skips over the skill name to find any |
774 |
* options given to the skill. Its pretty simple - if there |
775 |
* are extra parameters (as deteremined by string length), we |
776 |
* want to skip over any leading spaces. |
777 |
*/ |
778 |
if (len >= strlen (string)) |
779 |
string = NULL; |
780 |
else |
781 |
{ |
782 |
string += len; |
783 |
while (*string == 0x20) |
784 |
string++; |
785 |
|
786 |
if (strlen (string) == 0) |
787 |
string = NULL; |
788 |
} |
789 |
|
790 |
#ifdef SKILL_UTIL_DEBUG |
791 |
LOG (llevDebug, "use_skill() got skill: %s\n", sknum > -1 ? skills[sknum].name : "none"); |
792 |
#endif |
793 |
|
794 |
if (do_skill (op, op, skop, op->facing, string)) |
795 |
return 1; |
796 |
|
797 |
return 0; |
798 |
} |
799 |
|
800 |
static bool |
801 |
hth_skill_p (object *skill) |
802 |
{ |
803 |
return (skill_flags [skill->subtype] & (SF_COMBAT | SF_NEED_ITEM)) == SF_COMBAT; |
804 |
} |
805 |
|
806 |
/* This finds the first unarmed skill the player has, and returns it. |
807 |
*/ |
808 |
static object * |
809 |
find_player_hth_skill (object *op) |
810 |
{ |
811 |
for (object *tmp = op->inv; tmp; tmp = tmp->below) |
812 |
if (tmp->type == SKILL && tmp->flag [FLAG_CAN_USE_SKILL] && hth_skill_p (tmp)) |
813 |
return tmp; |
814 |
|
815 |
return 0; |
816 |
} |
817 |
|
818 |
/* do_skill_attack() - We have got an appropriate opponent from either |
819 |
* move_player_attack() or skill_attack(). In this part we get on with |
820 |
* attacking, take care of messages from the attack and changes in invisible. |
821 |
* Returns true if the attack damaged the opponent. |
822 |
* tmp is the targetted monster. |
823 |
* op is what is attacking |
824 |
* string is passed along to describe what messages to describe |
825 |
* the damage. |
826 |
*/ |
827 |
static int |
828 |
do_skill_attack (object *tmp, object *op, const char *string, object *skill) |
829 |
{ |
830 |
if (INVOKE_OBJECT (SKILL_ATTACK, op, ARG_OBJECT (tmp), ARG_STRING (string), ARG_OBJECT (skill))) |
831 |
return RESULT_INT (0); |
832 |
|
833 |
/* For Players only: if there is no ready weapon, and no "attack" skill |
834 |
* is readied either then try to find a skill for the player to use. |
835 |
* it is presumed that if skill is set, it is a valid attack skill (eg, |
836 |
* the caller should have set it appropriately). We still want to pass |
837 |
* through that code if skill is set to change to the skill. |
838 |
*/ |
839 |
if (player *pl = op->contr) |
840 |
{ |
841 |
if (skill) |
842 |
{ |
843 |
if (!op->apply (skill)) |
844 |
return 0; |
845 |
} |
846 |
else |
847 |
{ |
848 |
if (!pl->combat_ob) |
849 |
{ |
850 |
if (op->flag [FLAG_READY_WEAPON]) |
851 |
{ |
852 |
for (tmp = op->inv; tmp; tmp = tmp->below) |
853 |
if (tmp->type == WEAPON && tmp->flag [FLAG_APPLIED]) |
854 |
break; |
855 |
|
856 |
if (!tmp) |
857 |
LOG (llevError, "Could not find applied weapon on %s\n", &op->name); |
858 |
|
859 |
pl->combat_ob = tmp; |
860 |
} |
861 |
|
862 |
if (!pl->combat_ob) |
863 |
{ |
864 |
/* See if the players chosen skill is a combat skill, and use |
865 |
* it if appropriate. |
866 |
*/ |
867 |
if (op->chosen_skill && hth_skill_p (op->chosen_skill)) |
868 |
skill = op->chosen_skill; |
869 |
else |
870 |
{ |
871 |
skill = find_player_hth_skill (op); |
872 |
|
873 |
if (!skill) |
874 |
new_draw_info (NDI_BLACK, 0, op, "You have no unarmed combat skills!"); |
875 |
} |
876 |
|
877 |
op->apply (skill); |
878 |
} |
879 |
|
880 |
if (!pl->combat_ob) |
881 |
{ |
882 |
LOG (llevError, "Could not find anything to attack on %s\n", &op->name); |
883 |
return 0; |
884 |
} |
885 |
} |
886 |
|
887 |
if (!op->apply (pl->combat_ob)) |
888 |
return 0; |
889 |
} |
890 |
|
891 |
/* lose invisiblity/hiding status for running attacks */ |
892 |
if (pl->tmp_invis) |
893 |
{ |
894 |
pl->tmp_invis = 0; |
895 |
op->invisible = 0; |
896 |
op->flag [FLAG_HIDDEN] = 0; |
897 |
update_object (op, UP_OBJ_CHANGE); |
898 |
} |
899 |
} |
900 |
|
901 |
int success = attack_ob (tmp, op); |
902 |
|
903 |
/* print appropriate messages to the player */ |
904 |
|
905 |
if (success && string && tmp && !tmp->flag [FLAG_FREED]) |
906 |
{ |
907 |
if (op->type == PLAYER) |
908 |
new_draw_info_format (NDI_UNIQUE, 0, op, "You %s %s!", string, query_name (tmp)); |
909 |
else if (tmp->type == PLAYER) |
910 |
new_draw_info_format (NDI_UNIQUE, 0, tmp, "%s %s you!", query_name (op), string); |
911 |
} |
912 |
|
913 |
return success; |
914 |
} |
915 |
|
916 |
/* skill_attack() - Core routine for use when we attack using a skills |
917 |
* system. In essence, this code handles |
918 |
* all skill-based attacks, i.e. hth, missile and melee weapons should be |
919 |
* treated here. If an opponent is already supplied by move_player(), |
920 |
* we move right onto do_skill_attack(), otherwise we find if an |
921 |
* appropriate opponent exists. |
922 |
* |
923 |
* This is called by move_player() and attack_hth() |
924 |
* |
925 |
* Initial implementation by -bt thomas@astro.psu.edu |
926 |
*/ |
927 |
int |
928 |
skill_attack (object *tmp, object *pl, int dir, const char *string, object *skill) |
929 |
{ |
930 |
sint16 tx, ty; |
931 |
maptile *m; |
932 |
int mflags; |
933 |
|
934 |
if (!dir) |
935 |
dir = pl->facing; |
936 |
|
937 |
tx = freearr_x[dir]; |
938 |
ty = freearr_y[dir]; |
939 |
|
940 |
/* If we don't yet have an opponent, find if one exists, and attack. |
941 |
* Legal opponents are the same as outlined in move_player_attack() |
942 |
*/ |
943 |
if (!tmp) |
944 |
{ |
945 |
m = pl->map; |
946 |
tx = pl->x + freearr_x[dir]; |
947 |
ty = pl->y + freearr_y[dir]; |
948 |
|
949 |
mflags = get_map_flags (m, &m, tx, ty, &tx, &ty); |
950 |
if (mflags & P_OUT_OF_MAP) |
951 |
return 0; |
952 |
|
953 |
/* space must be blocked for there to be anything interesting to do */ |
954 |
if (!OB_TYPE_MOVE_BLOCK (pl, GET_MAP_MOVE_BLOCK (m, tx, ty))) |
955 |
return 0; |
956 |
|
957 |
for (tmp = GET_MAP_OB (m, tx, ty); tmp; tmp = tmp->above) |
958 |
if ((tmp->flag [FLAG_ALIVE] && tmp->stats.hp >= 0) || tmp->flag [FLAG_CAN_ROLL] || tmp->type == LOCKED_DOOR) |
959 |
{ |
960 |
/* Don't attack party members */ |
961 |
if ((pl->type == PLAYER && tmp->type == PLAYER) && (pl->contr->party != NULL && pl->contr->party == tmp->contr->party)) |
962 |
return 0; |
963 |
|
964 |
break; |
965 |
} |
966 |
} |
967 |
|
968 |
if (!tmp) |
969 |
{ |
970 |
if (pl->type == PLAYER) |
971 |
new_draw_info (NDI_UNIQUE, 0, pl, "There is nothing to attack!"); |
972 |
|
973 |
return 0; |
974 |
} |
975 |
|
976 |
return do_skill_attack (tmp, pl, string, skill); |
977 |
} |
978 |
|
979 |
/* attack_hth() - this handles all hand-to-hand attacks -b.t. */ |
980 |
|
981 |
/* July 5, 1995 - I broke up attack_hth() into 2 parts. In the first |
982 |
* (attack_hth) we check for weapon use, etc in the second (the new |
983 |
* function skill_attack() we actually attack. |
984 |
*/ |
985 |
static int |
986 |
attack_hth (object *pl, int dir, const char *string, object *skill) |
987 |
{ |
988 |
object *enemy = NULL, *weapon; |
989 |
|
990 |
if (pl->flag [FLAG_READY_WEAPON]) |
991 |
for (weapon = pl->inv; weapon; weapon = weapon->below) |
992 |
{ |
993 |
if (weapon->type == WEAPON && weapon->flag [FLAG_APPLIED]) |
994 |
{ |
995 |
weapon->clr_flag (FLAG_APPLIED); |
996 |
pl->clr_flag (FLAG_READY_WEAPON); |
997 |
pl->update_stats (); |
998 |
if (pl->type == PLAYER) |
999 |
{ |
1000 |
new_draw_info (NDI_UNIQUE, 0, pl, "You unwield your weapon in order to attack."); |
1001 |
esrv_update_item (UPD_FLAGS, pl, weapon); |
1002 |
} |
1003 |
|
1004 |
break; |
1005 |
} |
1006 |
} |
1007 |
|
1008 |
return skill_attack (enemy, pl, dir, string, skill); |
1009 |
} |
1010 |
|
1011 |
/* attack_melee_weapon() - this handles melee weapon attacks -b.t. |
1012 |
* For now we are just checking to see if we have a ready weapon here. |
1013 |
* But there is a real neato possible feature of this scheme which |
1014 |
* bears mentioning: |
1015 |
* Since we are only calling this from do_skill() in the future |
1016 |
* we may make this routine handle 'special' melee weapons attacks |
1017 |
* (like disarming manuever with sai) based on player SK_level and |
1018 |
* weapon type. |
1019 |
*/ |
1020 |
static int |
1021 |
attack_melee_weapon (object *op, int dir, const char *string, object *skill) |
1022 |
{ |
1023 |
|
1024 |
if (!op->flag [FLAG_READY_WEAPON]) |
1025 |
{ |
1026 |
if (op->type == PLAYER) |
1027 |
new_draw_info (NDI_UNIQUE, 0, op, "You have no ready weapon to attack with!"); |
1028 |
|
1029 |
return 0; |
1030 |
} |
1031 |
|
1032 |
return skill_attack (NULL, op, dir, string, skill); |
1033 |
} |
1034 |
|