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Comparing deliantra/server/server/skill_util.C (file contents):
Revision 1.5 by root, Tue Aug 29 08:01:38 2006 UTC vs.
Revision 1.94 by root, Sun Apr 11 00:34:06 2010 UTC

1	/*	1	/*
2	* static char *rcsid_skill_util_c =	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	* "$Id: skill_util.C,v 1.5 2006/08/29 08:01:38 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	/*
6	CrossFire, A Multiplayer game for X-windows
7
8	Copryight (C) 2002 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2002 Mark Wedel & Crossfire Development Team
9	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992 Frank Tore Johansen
10		7	*
11	This program is free software; you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify it under
12	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
13	the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
14	(at your option) any later version.	11	* option) any later version.
15		12	*
16	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,
17	but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
18	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19	GNU General Public License for more details.	16	* GNU General Public License for more details.
20		17	*
21	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
22	along with this program; if not, write to the Free Software	19	* and the GNU General Public License along with this program. If not, see
23	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
24		21	*
25	The author can be reached via e-mail to crossfire-devel@real-time.com	22	* The authors can be reached via e-mail to <support@deliantra.net>
26	*/	23	*/
27		24
28	/* Created July 95 to separate skill utilities from actual skills -b.t. */	25	/* Created July 95 to separate skill utilities from actual skills -b.t. */
29		26
30	/* Reconfigured skills code to allow linking of skills to experience	27	/* Reconfigured skills code to allow linking of skills to experience
31	* categories. This is done solely through the init_new_exp_system() fctn.	28	* categories. This is done solely through the init_new_exp_system() fctn.
…		…
38	* experience. Calc_skill_exp() handles the gained experience using	35	* experience. Calc_skill_exp() handles the gained experience using
39	* modifications in the skills[] table. - b.t.	36	* modifications in the skills[] table. - b.t.
40	*/	37	*/
41		38
42	/* define the following for skills utility debuging */	39	/* define the following for skills utility debuging */
		40
43	/* #define SKILL_UTIL_DEBUG */	41	/* #define SKILL_UTIL_DEBUG */
44
45	#define WANT_UNARMED_SKILLS
46		42
47	#include <global.h>	43	#include <global.h>
48	#include <object.h>	44	#include <object.h>
49	#ifndef __CEXTRACT__
50	#include <sproto.h>	45	#include <sproto.h>
51	#endif
52	#include <living.h> /* for defs of STR,CON,DEX,etc. -b.t.*/	46	#include <living.h> /* for defs of STR,CON,DEX,etc. -b.t. */
53	#include <spells.h>	47	#include <spells.h>
54		48
		49	const uint8_t skill_flags[NUM_SKILLS] = {
		50	0, // SK_NONE
		51	# define def(uc, flags) flags,
		52	# include "skillinc.h"
		53	# undef def
		54	};
		55
55	static int attack_hth(object *pl, int dir, const char *string, object *skill);	56	static int attack_hth (object *pl, int dir, const char *string, object *skill);
56	static int attack_melee_weapon(object *op, int dir, const char *string, object *skill);	57	static int attack_melee_weapon (object *op, int dir, const char *string, object *skill);
57
58	const char *skill_names[NUM_SKILLS];
59		58
60	/* init_skills basically just sets up the skill_names table	59	/* init_skills basically just sets up the skill_names table
61	* above. The index into the array is set up by the	60	* above. The index into the array is set up by the
62	* subtypes.	61	* subtypes.
63	*/	62	*/
64	void init_skills(void) {	63	void
65	int i;	64	init_skills ()
66	archetype *at;	65	{
67		66	for_all_archetypes (at)
68	for (i=0; i<NUM_SKILLS; i++)
69	skill_names[i] = NULL;
70
71	for(at = first_archetype;at!=NULL;at=at->next) {
72	if (at->clone.type == SKILL) {	67	if (at->type == SKILL)
		68	{
73	if (skill_names[at->clone.subtype] != NULL) {	69	if (skill_names[at->subtype])
74	LOG(llevError, "init_skills: multiple skill using same subtype %d, %s, %s\n",	70	LOG (llevError, "init_skills: multiple skill using same subtype %d, %s, %s\n",
75	at->clone.subtype, skill_names[at->clone.subtype], at->clone.skill);	71	at->subtype, &skill_names[at->subtype], &at->skill);
76	} else {	72	else
77	skill_names[at->clone.subtype] = add_refcount(at->clone.skill);	73	skill_names[at->subtype] = at->skill;
78	}
79	}	74	}
80	}
81		75
82	/* This isn't really an error if there is no skill subtype set, but	76	/* This isn't really an error if there is no skill subtype set, but
83	* checking for this may catch some user errors.	77	* checking for this may catch some user errors.
84	*/	78	*/
85	for (i=1; i<NUM_SKILLS; i++) {	79	for (int i = 1; i < NUM_SKILLS; i++)
86	if (!skill_names[i])	80	if (!skill_names[i])
87	LOG(llevError, "init_skills: skill subtype %d doesn't have a name?\n",	81	LOG (llevError, "init_skills: skill subtype %d doesn't have a name?\n", i);
88	i);
89	}
90	}	82	}
91
92		83
93	/* This function goes through the player inventory and sets	84	/* This function goes through the player inventory and sets
94	* up the last_skills[] array in the player object.	85	* up the last_skills[] array in the player object.
95	* the last_skills[] is used to more quickly lookup skills -	86	* the last_skills[] is used to more quickly lookup skills -
96	* mostly used for sending exp.	87	* mostly used for sending exp.
97	*/	88	*/
98	void link_player_skills(object *op)	89	void
		90	player::link_skills ()
99	{	91	{
100	object *tmp;	92	for (int i = 0; i < NUM_SKILLS; ++i)
		93	last_skill_ob [i] = 0;
101		94
102	for (tmp=op->inv; tmp; tmp=tmp->below) {	95	for (object *tmp = ob->inv; tmp; tmp = tmp->below)
103	if (tmp->type == SKILL) {	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	{
104	/* This is really a warning, hence no else below */	102	/* This is really a warning, hence no else below */
105	if (op->contr->last_skill_ob[tmp->subtype] && op->contr->last_skill_ob[tmp->subtype] != tmp) {	103	if (last_skill_ob [tmp->subtype])
106	LOG(llevError,"Multiple skills with the same subtype? %s, %s\n",	104	LOG (llevError, "Multiple skills with the same subtype? %s, %s\n",
107	op->contr->last_skill_ob[tmp->subtype]->skill, tmp->skill);	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;
108	}	110	}
109	if (tmp->subtype >= NUM_SKILLS) {
110	LOG(llevError,"Invalid subtype number %d (range 0-%d)\n",
111	tmp->subtype, NUM_SKILLS);
112	} else {
113	op->contr->last_skill_ob[tmp->subtype] = tmp;
114	op->contr->last_skill_exp[tmp->subtype] = -1;
115	}
116	}	111	}
117	}	112	}
		113
		114	static object *
		115	find_skill (object *who, shstr_cmp name)
		116	{
		117	if (who->chosen_skill
		118	&& who->chosen_skill->skill == name
		119	&& who->chosen_skill->type == SKILL)
		120	return who->chosen_skill;
		121
		122	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 *player::find_skill (shstr_cmp name) const
		130	{
		131	// might want to use last_skill_obj at one point, or maybe not
		132	return ::find_skill (ob, name);
118	}	133	}
119		134
120	/* This returns the skill pointer of the given name (the	135	/* This returns the skill pointer of the given name (the
121	* one that accumlates exp, has the level, etc).	136	* one that accumulates exp, has the level, etc).
122	*	137	*
123	* It is presumed that the player will be needing to actually	138	* It is presumed that the player will be needing to actually
124	* use the skill, so thus if use of the skill requires a skill	139	* use the skill, so thus if use of the skill requires a skill
125	* tool, this code will equip it.	140	* tool, this code will equip it.
126	*/	141	*/
127	object *find_skill_by_name(object *who, const char *name)	142	object *
		143	find_skill_by_name (object *who, shstr_cmp sh)
128	{	144	{
129	object *skill=NULL, *skill_tool=NULL, *tmp;	145	object *skill_tool = 0;
130		146
131	if (!name) return NULL;
132
133	/* We make sure the length of the string in the object is greater
134	* in length than the passed string. Eg, if we have a skill called
135	* 'hi', we don't want to match if the user passed 'high'
136	*/
137	for (tmp=who->inv; tmp!=NULL; tmp=tmp->below) {	147	for (object *tmp = who->inv; tmp; tmp = tmp->below)
138	if (tmp->type == SKILL && !strncasecmp(name, tmp->skill, strlen(name)) &&	148	if (tmp->skill == sh)
139	strlen(tmp->skill) >= strlen(name)) skill = tmp;	149	{
140		150	if (tmp->type == SKILL && (tmp->flag [FLAG_CAN_USE_SKILL] || tmp->flag [FLAG_APPLIED]))
		151	/* If this is a skill that can be used without applying tool, return it */
		152	return splay (tmp);
141	/* Try to find appropriate skilltool. If the player has one already	153	/* Try to find appropriate skilltool. If the player has one already
142	* applied, we try to keep using that one.	154	* applied, we try to keep using that one.
143	*/	155	*/
144	else if (tmp->type == SKILL_TOOL && !strncasecmp(name, tmp->skill, strlen(name)) &&	156	else if (tmp->type == SKILL_TOOL && !skill_tool)
145	strlen(tmp->skill) >= strlen(name)) {
146	if (QUERY_FLAG(tmp, FLAG_APPLIED)) skill_tool = tmp;
147	else if (!skill_tool || !QUERY_FLAG(skill_tool, FLAG_APPLIED))
148	skill_tool = tmp;	157	skill_tool = tmp;
149	}	158	}
150	}
151	/* If this is a skill that can be used without a tool, return it */
152	if (skill && QUERY_FLAG(skill, FLAG_CAN_USE_SKILL)) return skill;
153		159
		160	if (!skill_tool)
		161	return 0;
		162
154	/* Player has a tool to use the skill. IF not applied, apply it -	163	/* Player has a tool to use the skill. If not applied, apply it -
155	* if not successful, return null. If they do have the skill tool	164	* if not successful, return null. If they do have the skill tool
156	* but not the skill itself, give it to them.	165	* but not the skill itself, give it to them.
157	*/	166	*/
158	if (skill_tool) {	167	object *skill = find_skill (who, skill_tool->skill);
159	if (!QUERY_FLAG(skill_tool, FLAG_APPLIED)) {	168
160	if (apply_special(who, skill_tool, 0)) return NULL;
161	}
162	if (!skill) {	169	if (!skill)
163	skill = give_skill_by_name(who, skill_tool->skill);	170	skill = give_skill_by_name (who, skill_tool->skill);
164	link_player_skills(who);	171
165	}	172	if (!skill_tool->flag [FLAG_APPLIED])
		173	if (!who->apply (splay (skill_tool)))
		174	return 0;
		175
		176	return splay (skill);
		177	}
		178
		179	object *
		180	find_skill_by_name_fuzzy (object *who, const char *name)
		181	{
		182	if (name)
		183	for (object *tmp = who->inv; tmp; tmp = tmp->below)
		184	if ((tmp->type == SKILL || tmp->type == SKILL_TOOL)
		185	&& tmp->skill.starts_with (name))
		186	if (object *skop = find_skill_by_name (who, tmp->skill))
166	return skill;	187	return skop;
167	}
168	return NULL;
169	}
170		188
		189	return 0;
		190	}
171		191
172	/* This returns the skill pointer of the given name (the	192	/* This returns the skill pointer of the given name (the
173	* one that accumlates exp, has the level, etc).	193	* one that accumulates exp, has the level, etc).
174	*	194	*
175	* It is presumed that the player will be needing to actually	195	* It is presumed that the player will be needing to actually
176	* use the skill, so thus if use of the skill requires a skill	196	* use the skill, so thus if use of the skill requires a skill
177	* tool, this code will equip it.	197	* tool, this code will equip it.
178	*	198	*
179	* This code is basically the same as find_skill_by_name() above,	199	* This code is basically the same as find_skill_by_name() above,
180	* but instead a skill name, we search by matching number.	200	* but instead a skill name, we search by matching number.
181	* this replaces find_skill.	201	* this replaces find_skill.
182	*/	202	*/
		203	object *
183	object *find_skill_by_number(object *who, int skillno)	204	find_skill_by_number (object *who, int skillno)
184	{	205	{
185	object *skill=NULL, *skill_tool=NULL, *tmp;
186
187	if (skillno < 1 || skillno >= NUM_SKILLS) return NULL;
188
189	for (tmp=who->inv; tmp!=NULL; tmp=tmp->below) {	206	for (object *tmp = who->inv; tmp; tmp = tmp->below)
190	if (tmp->type == SKILL && tmp->subtype == skillno) skill = tmp;
191
192	/* Try to find appropriate skilltool. If the player has one already
193	* applied, we try to keep using that one.
194	*/
195	else if (tmp->type == SKILL_TOOL && tmp->subtype == skillno) {	207	if (tmp->type == SKILL && tmp->subtype == skillno)
196	if (QUERY_FLAG(tmp, FLAG_APPLIED)) skill_tool = tmp;	208	if (object *skop = find_skill_by_name (who, tmp->skill))
197	else if (!skill_tool || !QUERY_FLAG(skill_tool, FLAG_APPLIED))
198	skill_tool = tmp;
199	}
200	}
201	/* If this is a skill that can be used without a tool, return it */
202	if (skill && QUERY_FLAG(skill, FLAG_CAN_USE_SKILL)) return skill;
203
204	/* Player has a tool to use the skill. IF not applied, apply it -
205	* if not successful, return null. If they do have the skill tool
206	* but not the skill itself, give it to them.
207	*/
208	if (skill_tool) {
209	if (!QUERY_FLAG(skill_tool, FLAG_APPLIED)) {
210	if (apply_special(who, skill_tool, 0)) return NULL;
211	}
212	if (!skill) {
213	skill = give_skill_by_name(who, skill_tool->skill);
214	link_player_skills(who);
215	}
216	return skill;	209	return skop;
217	}
218	return NULL;
219	}
220		210
221	/* This changes the objects skill to new_skill.
222	* note that this function doesn't always need to get used -
223	* you can now add skill exp to the player without the chosen_skill being
224	* set. This function is of most interest to players to update
225	* the various range information.
226	* if new_skill is null, this just unapplies the skill.
227	* flag has the current meaning:
228	* 0x1: If set, don't update the range pointer. This is useful when we
229	* need to ready a new skill, but don't want to clobber range.
230	* return 1 on success, 0 on error
231	*/
232
233	int change_skill (object *who, object *new_skill, int flag)
234	{
235	int old_range;
236
237	if ( who->type != PLAYER )
238	return 0;
239
240	old_range = who->contr->shoottype;
241
242	if (who->chosen_skill && who->chosen_skill == new_skill)
243	{
244	/* optimization for changing skill to current skill */
245	if (who->type == PLAYER && !(flag & 0x1))
246	who->contr->shoottype = range_skill;
247	return 1;
248	}
249
250	if (!new_skill || who->chosen_skill)
251	if (who->chosen_skill) apply_special(who, who->chosen_skill, AP_UNAPPLY);
252
253	/* Only goal in this case was to unapply a skill */
254	if (!new_skill) return 0;
255
256	if (apply_special (who, new_skill, AP_APPLY)) {
257	return 0;
258	}
259	if (flag & 0x1)
260	who->contr->shoottype = (rangetype) old_range;
261
262	return 1;	211	return 0;
263	}
264
265	/* This function just clears the chosen_skill and range_skill values
266	* inthe player.
267	*/
268	void clear_skill(object *who)
269	{
270	who->chosen_skill = NULL;
271	CLEAR_FLAG(who, FLAG_READY_SKILL);
272	if (who->type == PLAYER) {
273	who->contr->ranges[range_skill] = NULL;
274	if (who->contr->shoottype == range_skill)
275	who->contr->shoottype = range_none;
276	}
277	}	212	}
278		213
279	/* do_skill() - Main skills use function-similar in scope to cast_spell().	214	/* do_skill() - Main skills use function-similar in scope to cast_spell().
280	* We handle all requests for skill use outside of some combat here.	215	* We handle all requests for skill use outside of some combat here.
281	* We require a separate routine outside of fire() so as to allow monsters	216	* We require a separate routine outside of fire() so as to allow monsters
…		…
284	* exp - no caller needed that info, but it also prevented the callers	219	* exp - no caller needed that info, but it also prevented the callers
285	* from know if a skill was actually used, as many skills don't	220	* from know if a skill was actually used, as many skills don't
286	* give any exp for their direct use (eg, throwing).	221	* give any exp for their direct use (eg, throwing).
287	* It returns 0 if no skill was used.	222	* It returns 0 if no skill was used.
288	*/	223	*/
289		224	int
290	int do_skill (object *op, object *part, object *skill, int dir, const char *string) {	225	do_skill (object *op, object *part, object *skill, int dir, const char *string)
		226	{
291	int success=0, exp=0;	227	int success = 0, exp = 0;
292	int did_alc = 0;
293	object *tmp, *next;
294		228
295	if (!skill) return 0;	229	if (!skill)
		230	return 0;
296		231
297	/* The code below presumes that the skill points to the object that	232	/* The code below presumes that the skill points to the object that
298	* holds the exp, level, etc of the skill. So if this is a player	233	* holds the exp, level, etc of the skill. So if this is a player
299	* go and try to find the actual real skill pointer, and if the	234	* go and try to find the actual real skill pointer, and if the
300	* the player doesn't have a bucket for that, create one.	235	* the player doesn't have a bucket for that, create one.
301	*/	236	*/
302	if (skill->type != SKILL && op->type == PLAYER) {	237	if (skill->type != SKILL && op->type == PLAYER)
		238	{
303	for (tmp = op->inv; tmp!=NULL; tmp=tmp->below) {	239	for (object *tmp = op->inv; tmp; tmp = tmp->below)
304	if (tmp->type == SKILL && tmp->skill == skill->skill) break;	240	if (tmp->type == SKILL && tmp->skill == skill->skill)
305	}	241	{
306	if (!tmp) tmp=give_skill_by_name(op, skill->skill);
307	skill = tmp;	242	skill = tmp;
308	}	243	goto found;
		244	}
309		245
		246	skill = give_skill_by_name (op, skill->skill);
		247	found: ;
		248	}
		249
310	// skill, by_whom, on_which_object, which direction, skill_argument	250	// skill, by_whom, on_which_object, which direction, skill_argument
311	if (INVOKE_OBJECT (USE_SKILL, skill, ARG_OBJECT (op), ARG_OBJECT (part), ARG_INT (dir), ARG_STRING (string)))	251	if (INVOKE_OBJECT (USE_SKILL, skill, ARG_OBJECT (op), ARG_OBJECT (part), ARG_INT (dir), ARG_STRING (string)))
312	return 0;	252	return 0;
313		253
314	switch(skill->subtype) {	254	switch (skill->subtype)
		255	{
315	case SK_LEVITATION:	256	case SK_LEVITATION:
316	/* Not 100% sure if this will work with new movement code -	257	/* Not 100% sure if this will work with new movement code -
317	* the levitation skill has move_type for flying, so when	258	* the levitation skill has move_type for flying, so when
318	* equipped, that should transfer to player, when not,	259	* equipped, that should transfer to player, when not,
319	* shouldn't.	260	* shouldn't.
320	*/	261	*/
321	if(QUERY_FLAG(skill,FLAG_APPLIED)) {	262	if (skill->flag [FLAG_APPLIED])
322	CLEAR_FLAG(skill,FLAG_APPLIED);	263	{
		264	skill->clr_flag (FLAG_APPLIED);
323	new_draw_info(NDI_UNIQUE,0,op,"You come to earth.");	265	new_draw_info (NDI_UNIQUE, 0, op, "You come to earth.");
324	}	266	}
325	else {	267	else
326	SET_FLAG(skill,FLAG_APPLIED);	268	{
		269	skill->set_flag (FLAG_APPLIED);
327	new_draw_info(NDI_UNIQUE,0,op,"You rise into the air!.");	270	new_draw_info (NDI_UNIQUE, 0, op, "You rise into the air!");
328	}	271	}
329	fix_player(op);	272
		273	op->update_stats ();
330	success=1;	274	success = 1;
331	break;	275	break;
332		276
333	case SK_STEALING:	277	case SK_STEALING:
334	exp = success = steal(op, dir, skill);	278	exp = success = steal (op, dir, skill);
335	break;	279	break;
336		280
337	case SK_LOCKPICKING:	281	case SK_LOCKPICKING:
338	exp = success = pick_lock(op, dir, skill);	282	exp = success = pick_lock (op, dir, skill);
339	break;	283	break;
340		284
341	case SK_HIDING:	285	case SK_HIDING:
342	exp = success = hide(op, skill);	286	exp = success = hide (op, skill);
343	break;	287	break;
344		288
345	case SK_JUMPING:	289	case SK_JUMPING:
346	success = jump(op, dir, skill);	290	exp = success = jump (op, dir, skill);
347	break;	291	break;
348		292
349	case SK_INSCRIPTION:	293	case SK_INSCRIPTION:
350	exp = success = write_on_item(op,string, skill);	294	exp = success = write_on_item (op, string, skill);
351	break;	295	break;
352		296
353	case SK_MEDITATION:	297	case SK_MEDITATION:
354	meditate(op, skill);	298	meditate (op, skill);
355	success=1;	299	success = 1;
356	break;	300	break;
357	/* note that the following 'attack' skills gain exp through hit_player() */	301	/* note that the following 'attack' skills gain exp through hit_player() */
358		302
359	case SK_KARATE:	303	case SK_KARATE:
360	(void) attack_hth(op,dir,"karate-chopped", skill);	304	attack_hth (op, dir, "karate-chopped", skill);
361	break;	305	break;
362		306
363	case SK_PUNCHING:	307	case SK_PUNCHING:
364	(void) attack_hth(op,dir,"punched", skill);	308	attack_hth (op, dir, "punched", skill);
365	break;	309	break;
366		310
367	case SK_FLAME_TOUCH:	311	case SK_FLAME_TOUCH:
368	(void) attack_hth(op,dir,"flamed", skill);	312	attack_hth (op, dir, "flamed", skill);
369	break;	313	break;
370		314
371	case SK_SPARK_TOUCH:	315	case SK_SPARK_TOUCH:
372	(void) attack_hth(op,dir,"zapped", skill);	316	attack_hth (op, dir, "zapped", skill);
373	break;	317	break;
374		318
375	case SK_SHIVER:	319	case SK_SHIVER:
376	(void) attack_hth(op,dir,"froze", skill);	320	attack_hth (op, dir, "froze", skill);
377	break;	321	break;
378		322
379	case SK_ACID_SPLASH:	323	case SK_ACID_SPLASH:
380	(void) attack_hth(op,dir,"dissolved", skill);	324	attack_hth (op, dir, "dissolved", skill);
381	break;	325	break;
382		326
383	case SK_POISON_NAIL:	327	case SK_POISON_NAIL:
384	(void) attack_hth(op,dir,"injected poison into", skill);	328	attack_hth (op, dir, "injected poison into", skill);
385	break;	329	break;
386		330
387	case SK_CLAWING:	331	case SK_CLAWING:
388	(void) attack_hth(op,dir,"clawed", skill);	332	attack_hth (op, dir, "clawed", skill);
389	break;	333	break;
390		334
391	case SK_ONE_HANDED_WEAPON:	335	case SK_ONE_HANDED_WEAPON:
392	case SK_TWO_HANDED_WEAPON:	336	case SK_TWO_HANDED_WEAPON:
393	(void) attack_melee_weapon(op,dir,NULL, skill);	337	attack_melee_weapon (op, dir, NULL, skill);
394	break;	338	break;
395		339
396	case SK_FIND_TRAPS:	340	case SK_FIND_TRAPS:
397	exp = success = find_traps(op, skill);	341	exp = success = find_traps (op, skill);
398	break;	342	break;
399		343
400	case SK_SINGING:	344	case SK_SINGING:
401	exp = success = singing(op,dir, skill);	345	exp = success = singing (op, dir, skill);
402	break;	346	break;
403		347
404	case SK_ORATORY:	348	case SK_ORATORY:
405	exp = success = use_oratory(op,dir, skill);	349	exp = success = use_oratory (op, dir, skill);
406	break;	350	break;
407		351
408	case SK_SMITHERY:	352	case SK_SMITHERY:
409	case SK_BOWYER:	353	case SK_BOWYER:
410	case SK_JEWELER:	354	case SK_JEWELER:
411	case SK_ALCHEMY:	355	case SK_ALCHEMY:
412	case SK_THAUMATURGY:	356	case SK_THAUMATURGY:
413	case SK_LITERACY:	357	case SK_LITERACY:
414	case SK_WOODSMAN:	358	case SK_WOODSMAN:
415	/* first, we try to find a cauldron, and do the alchemy thing.	359	/* first, we try to find a cauldron, and do the alchemy thing.
416	* failing that, we go and identify stuff.	360	* failing that, we go and identify stuff.
		361	*/
		362	{
		363	bool found_cauldron = false;
		364
		365	for (object *next, *tmp = GET_MAP_OB (op->map, op->x, op->y); tmp; tmp = next)
417	*/	366	{
418	for (tmp=get_map_ob(op->map, op->x, op->y); tmp != NULL;tmp=next) {
419	next=tmp->above;	367	next = tmp->above;
420	if(QUERY_FLAG(tmp, FLAG_IS_CAULDRON)) {	368
		369	if (tmp->flag [FLAG_IS_CAULDRON])
		370	{
		371	found_cauldron = true;
		372
		373	if (tmp->skill != skill->skill)
		374	{
		375	op->failmsgf ("You can't use the %s with the %s skill!",
		376	query_name (tmp),
		377	query_name (skill));
		378	break;
		379	}
		380
421	attempt_do_alchemy(op, tmp);	381	attempt_do_alchemy (op, tmp, skill);
		382
422	if (QUERY_FLAG(tmp, FLAG_APPLIED))	383	if (tmp->flag [FLAG_APPLIED])
423	esrv_send_inventory(op, tmp);	384	esrv_send_inventory (op, tmp);
424	did_alc=1;
425	}	385	}
426	}	386	}
427	if (did_alc == 0)
428	exp = success = skill_ident(op,skill);
429	break;
430		387
431	case SK_DET_MAGIC:	388	if (!found_cauldron)
432	case SK_DET_CURSE:
433	exp = success = skill_ident(op,skill);	389	exp = success = skill_ident (op, skill);
		390	}
434	break;	391	break;
435		392
		393	case SK_DET_MAGIC:
		394	case SK_DET_CURSE:
		395	exp = success = skill_ident (op, skill);
		396	break;
		397
436	case SK_DISARM_TRAPS:	398	case SK_DISARM_TRAPS:
437	exp = success = remove_trap(op,dir, skill);	399	exp = success = remove_trap (op, dir, skill);
438	break;	400	break;
439		401
440	case SK_THROWING:	402	case SK_THROWING:
441	success = skill_throw(op,part,dir,string, skill);	403	success = skill_throw (op, part, dir, string, skill);
442	break;	404	break;
443		405
444	case SK_SET_TRAP:	406	case SK_SET_TRAP:
445	new_draw_info(NDI_UNIQUE, 0,op,"This skill is not currently implemented.");	407	new_draw_info (NDI_UNIQUE, 0, op, "This skill is not currently implemented.");
446	break;	408	break;
447		409
448	case SK_USE_MAGIC_ITEM:	410	case SK_USE_MAGIC_ITEM:
449	case SK_MISSILE_WEAPON:	411	case SK_MISSILE_WEAPON:
450	new_draw_info(NDI_UNIQUE, 0,op,"There is no special attack for this skill.");	412	new_draw_info (NDI_UNIQUE, 0, op, "There is no special attack for this skill.");
451	break;	413	break;
452		414
453	case SK_PRAYING:	415	case SK_PRAYING:
454	success = pray(op, skill);	416	success = pray (op, skill);
455	break;	417	break;
456		418
457	case SK_BARGAINING:	419	case SK_BARGAINING:
458	success = describe_shop(op);	420	success = describe_shop (op);
459	break;	421	break;
460		422
461	case SK_SORCERY:	423	case SK_SORCERY:
462	case SK_EVOCATION:	424	case SK_EVOCATION:
463	case SK_PYROMANCY:	425	case SK_PYROMANCY:
464	case SK_SUMMONING:	426	case SK_SUMMONING:
465	case SK_CLIMBING:	427	case SK_CLIMBING:
466	new_draw_info(NDI_UNIQUE, 0,op,"This skill is already in effect.");	428	new_draw_info (NDI_UNIQUE, 0, op, "This skill is already in effect.");
467	break;	429	break;
468		430
		431	case SK_MINING:
		432	success = skill_mining (op, part, skill, dir, string);
		433	break;
		434
		435	case SK_FISHING:
		436	success = skill_fishing (op, part, skill, dir, string);
		437	break;
		438
469	default:	439	default:
470	LOG(llevDebug,"%s attempted to use unknown skill: %d\n"	440	LOG (llevDebug, "%s attempted to use unknown skill: %d\n", query_name (op), op->chosen_skill->stats.sp);
471	,query_name(op), op->chosen_skill->stats.sp);
472	break;	441	break;
473	}	442	}
474		443
475	/* For players we now update the speed_left from using the skill.	444	/* For players we now update the speed_left from using the skill.
476	* Monsters have no skill use time because of the random nature in	445	* Monsters have no skill use time because of the random nature in
477	* which use_monster_skill is called already simulates this.	446	* which use_monster_skill is called already simulates this.
478	* If certain skills should take more/less time, that should be	447	* If certain skills should take more/less time, that should be
479	* in the code for the skill itself.	448	* in the code for the skill itself.
480	*/	449	*/
481		450	if (op->type == PLAYER)
482	if(op->type==PLAYER) op->speed_left -= 1.0;	451	op->speed_left -= 1.f;
483		452
484	/* this is a good place to add experience for successfull use of skills.	453	/* this is a good place to add experience for successfull use of skills.
485	* Note that add_exp() will figure out player/monster experience	454	* Note that add_exp() will figure out player/monster experience
486	* gain problems.	455	* gain problems.
487	*/	456	*/
488		457
		458	if (success && exp)
489	if(success && exp) change_exp(op,exp, skill->skill, 0);	459	change_exp (op, exp, skill->skill, 0);
490		460
491	return success;	461	return success;
492	}	462	}
493		463
494	/* calc_skill_exp() - calculates amount of experience can be gained for	464	/* calc_skill_exp() - calculates amount of experience can be gained for
495	* successfull use of a skill. Returns value of experience gain.	465	* successfull use of a skill. Returns value of experience gain.
496	* Here we take the view that a player must 'overcome an opponent'	466	* Here we take the view that a player must 'overcome an opponent'
…		…
514	* op is the object that was 'defeated'.	484	* op is the object that was 'defeated'.
515	* skill is the skill used. If no skill is used, it should just	485	* skill is the skill used. If no skill is used, it should just
516	* point back to who.	486	* point back to who.
517	*	487	*
518	*/	488	*/
519		489	int
520	int calc_skill_exp(object *who, object *op, object *skill) {	490	calc_skill_exp (object *who, object *op, object *skill)
		491	{
521	int op_exp=0,op_lvl= 0;	492	int op_exp = 0, op_lvl = 0;
522	float base,value,lvl_mult=0.0;	493	float base, value, lvl_mult = 0.0;
523		494
524	if (!skill) skill = who;	495	if (!skill)
		496	skill = who;
525		497
526	/* Oct 95 - where we have an object, I expanded our treatment	498	/* Oct 95 - where we have an object, I expanded our treatment
527	* to 3 cases:	499	* to 3 cases:
528	* non-living magic obj, runes and everything else.	500	* non-living magic obj, runes and everything else.
529	*	501	*
530	* If an object is not alive and magical we set the base exp higher to	502	* If an object is not alive and magical we set the base exp higher to
531	* help out exp awards for skill_ident skills. Also, if	503	* help out exp awards for skill_ident skills. Also, if
532	* an item is type RUNE, we give out exp based on stats.Cha	504	* an item is type RUNE, we give out exp based on stats.Cha
533	* and level (this was the old system) -b.t.	505	* and level (this was the old system) -b.t.
534	*/	506	*/
535		507	if (!op)
536	if(!op) { /* no item/creature */	508	{ /* no item/creature */
537	op_lvl= who->map->difficulty < 1 ? 1: who->map->difficulty;	509	op_lvl = max (1, who->map->difficulty);
538	op_exp = 0;	510	op_exp = 0;
539	} else if(op->type==RUNE || op->type==TRAP) { /* all traps. If stats.Cha > 1 we use that	511	}
		512	else if (op->type == RUNE || op->type == TRAP)
		513	{ /* all traps. If stats.Cha > 1 we use that
540	* for the amount of experience */	514	* for the amount of experience */
541	op_exp = op->stats.Cha>1 ? op->stats.Cha : op->stats.exp;	515	op_exp = op->stats.Cha > 1 ? op->stats.Cha : op->stats.exp;
542	op_lvl = op->level;	516	op_lvl = op->level;
543	} else { /* all other items/living creatures */	517	}
		518	else
		519	{ /* all other items/living creatures */
544	op_exp = op->stats.exp;	520	op_exp = op->stats.exp;
545	op_lvl = op->level;	521	op_lvl = op->level;
546	if(!QUERY_FLAG(op,FLAG_ALIVE)) { /* for ident/make items */	522	if (!op->flag [FLAG_ALIVE])
547	op_lvl += 5 * abs(op->magic);	523	op_lvl += 5 * abs (op->magic); /* for ident/make items */
548	}
549	}	524	}
550		525
551	if(op_lvl<1) op_lvl = 1;	526	if (op_lvl < 1)
		527	op_lvl = 1;
552		528
553	if(who->type!=PLAYER) { /* for monsters only */	529	if (who->type != PLAYER)
		530	{ /* for monsters only */
554	return ((int) (op_exp*0.1)+1); /* we add one to insure positive value is returned */	531	return ((int) (op_exp * 0.1) + 1); /* we add one to insure positive value is returned */
		532	}
		533	else
555	} else { /* for players */	534	{ /* for players */
556	base = op_exp;	535	base = op_exp;
557	/* if skill really is a skill, then we can look at the skill archetype for	536	/* if skill really is a skill, then we can look at the skill archetype for
558	* bse reward value (exp) and level multiplier factor.	537	* bse reward value (exp) and level multiplier factor.
559	*/	538	*/
560	if (skill->type == SKILL) {	539	if (skill->type == SKILL)
		540	{
561	base += skill->arch->clone.stats.exp;	541	base += skill->arch->stats.exp;
562	if (settings.simple_exp) {	542	if (settings.simple_exp)
		543	{
563	if (skill->arch->clone.level)	544	if (skill->arch->level)
564	lvl_mult = (float) skill->arch->clone.level / 100.0;	545	lvl_mult = (float) skill->arch->level / 100.0;
565	else	546	else
566	lvl_mult = 1.0; /* no adjustment */	547	lvl_mult = 1.0; /* no adjustment */
567	}	548	}
568	else {	549	else
		550	{
569	if (skill->level)	551	if (skill->level)
570	lvl_mult = ((float) skill->arch->clone.level * (float) op_lvl) / ((float) skill->level * 100.0);	552	lvl_mult = ((float) skill->arch->level * (float) op_lvl) / ((float) skill->level * 100.0);
571	else	553	else
572	lvl_mult = 1.0;	554	lvl_mult = 1.0;
573	}	555	}
574	} else {
575	/* Don't divide by zero here! */
576	lvl_mult = (float) op_lvl / (float) (skill->level?skill->level:1);
577	}	556	}
		557	else
		558	{
		559	/* Don't divide by zero here! */
		560	lvl_mult = (float) op_lvl / (float) max (1, skill->level);
		561	}
578	}	562	}
579		563
580	/* assemble the exp total, and return value */	564	/* assemble the exp total, and return value */
581		565
582	value = base * lvl_mult;	566	value = base * lvl_mult;
		567	if (value < 1)
583	if (value < 1) value=1; /* Always give at least 1 exp point */	568	value = 1; /* Always give at least 1 exp point */
584		569
585	#ifdef SKILL_UTIL_DEBUG	570	#ifdef SKILL_UTIL_DEBUG
586	LOG(llevDebug,"calc_skill_exp(): who: %s(lvl:%d) op:%s(lvl:%d)\n",	571	LOG (llevDebug, "calc_skill_exp(): who: %s(lvl:%d) op:%s(lvl:%d)\n", who->name, skill->level, op->name, op_lvl);
587	who->name,skill->level,op->name,op_lvl);
588	#endif	572	#endif
589	return ( (int) value);	573	return ((int) value);
590	}	574	}
591		575
592	/* Learn skill. This inserts the requested skill in the player's	576	/* Learn skill. This inserts the requested skill in the player's
593	* inventory. The skill field of the scroll should have the	577	* inventory. The skill field of the scroll should have the
594	* exact name of the requested skill.	578	* exact name of the requested skill.
595	* This one actually teaches the player the skill as something	579	* This one actually teaches the player the skill as something
596	* they can equip.	580	* they can equip.
597	* Return 0 if the player knows the skill, 1 if the	581	* Return 0 if the player knows the skill, 1 if the
598	* player learns the skill, 2 otherwise.	582	* player learns the skill, 2 otherwise.
599	*/	583	*/
600
601	int	584	int
602	learn_skill (object *pl, object *scroll) {	585	learn_skill (object *pl, object *scroll)
603	object *tmp;	586	{
604
605	if (!scroll->skill) {	587	if (!scroll->skill)
		588	{
606	LOG(llevError,"skill scroll %s does not have skill pointer set.\n", scroll->name);	589	LOG (llevError, "skill scroll %s does not have skill pointer set.\n", &scroll->name);
607	return 2;	590	return 2;
608	}	591	}
609		592
610	/* can't use find_skill_by_name because we want skills the player knows	593	object *tmp = find_skill (pl, scroll->skill);
611	* but can't use natively.
612	*/
613		594
614	for (tmp=pl->inv; tmp!=NULL; tmp=tmp->below)
615	if (tmp->type == SKILL && !strncasecmp(scroll->skill, tmp->skill, strlen(scroll->skill))) break;
616
617	/* player already knows it */	595	/* player already knows it */
618	if (tmp && QUERY_FLAG(tmp, FLAG_CAN_USE_SKILL)) return 0;	596	if (tmp && tmp->flag [FLAG_CAN_USE_SKILL])
		597	return 0;
619		598
620
621
622	/* now a random change to learn, based on player Int.	599	/* now a random change to learn, based on player Int.
623	* give bonus based on level - otherwise stupid characters	600	* give bonus based on level - otherwise stupid characters
624	* might never be able to learn anything.	601	* might never be able to learn anything.
625	*/	602	*/
626	if(random_roll(0, 99, pl, PREFER_LOW)>(learn_spell[pl->stats.Int] + (pl->level/5)))	603	if (random_roll (0, 99, pl, PREFER_LOW) > (learn_spell[pl->stats.Int] + (pl->level / 5)))
627	return 2; /* failure :< */	604	return 2; /* failure :< */
628		605
629	if (!tmp)	606	if (!tmp)
630	tmp = give_skill_by_name(pl, scroll->skill);	607	tmp = give_skill_by_name (pl, scroll->skill);
631		608
632	if (!tmp) {	609	if (!tmp)
		610	{
633	LOG(llevError,"skill scroll %s does not have valid skill name (%s).\n", scroll->name, scroll->skill);	611	LOG (llevError, "skill scroll %s does not have valid skill name (%s).\n", &scroll->name, &scroll->skill);
634	return 2;	612	return 2;
635	}	613	}
636		614
637	SET_FLAG(tmp, FLAG_CAN_USE_SKILL);	615	tmp->set_flag (FLAG_CAN_USE_SKILL);
638	link_player_skills(pl);	616
639	return 1;	617	return 1;
640	}	618	}
641		619
642	/* Gives a percentage clipped to 0% -> 100% of a/b. */	620	/* Gives a percentage clipped to 0% -> 100% of a/b. */
643	/* Probably belongs in some global utils-type file? */	621	/* Probably belongs in some global utils-type file? */
		622	static int
644	static int clipped_percent(sint64 a, sint64 b)	623	clipped_percent (sint64 a, sint64 b)
645	{	624	{
646	int rv;	625	int rv;
647		626
648	if (b <= 0)	627	if (b <= 0)
649	return 0;	628	return 0;
650		629
651	rv = (int)((100.0f * ((float)a) / ((float)b) ) + 0.5f);	630	rv = (int) ((100.0f * ((float) a) / ((float) b)) + 0.5f);
652		631
653	if (rv < 0)	632	if (rv < 0)
654	return 0;	633	return 0;
655	else if (rv > 100)	634	else if (rv > 100)
656	return 100;	635	return 100;
657		636
658	return rv;	637	return rv;
659	}	638	}
660		639
661	/* show_skills() - Meant to allow players to examine	640	/* show_skills() - Meant to allow players to examine
662	* their current skill list.	641	* their current skill list.
…		…
666	* Note this function is a bit more complicated becauase we	645	* Note this function is a bit more complicated becauase we
667	* we want ot sort the skills before printing them. If we	646	* we want ot sort the skills before printing them. If we
668	* just dumped this as we found it, this would be a bit	647	* just dumped this as we found it, this would be a bit
669	* simpler.	648	* simpler.
670	*/	649	*/
671		650	//TODO: egad, do it in perl, do not suffer from the big buffer on stack, make it one single drawinfo.
		651	void
672	void show_skills(object *op, const char* search) {	652	show_skills (object *pl, const char *search)
673	object *tmp=NULL;	653	{
674	char buf[MAX_BUF];
675	const char *cp;	654	const char *cp;
676	int i,num_skills_found=0;	655	int i, num_skills_found = 0;
677	static const char *const periods = "........................................";	656	const char *const periods = ".............................."; // 30
		657
678	/* Need to have a pointer and use strdup for qsort to work properly */	658	/* Need to have a pointer and use strdup for qsort to work properly */
679	char skills[NUM_SKILLS][MAX_BUF];	659	char skills[NUM_SKILLS][128]; // d'oh
680		660
		661	object *op = pl->contr->ob;
681		662
682	for (tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	663	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		664	{
683	if (tmp->type == SKILL) {	665	if (tmp->type == SKILL)
684	if ( search && strstr(tmp->name,search)==NULL ) continue;	666	{
		667	if (search && !tmp->name.contains (search))
		668	continue;
		669
		670	char buf[30];
		671
685	/* Basically want to fill this out to 40 spaces with periods */	672	/* Basically want to fill this out to 30 spaces with periods */
686	sprintf(buf,"%s%s", tmp->name, periods);	673	snprintf (buf, sizeof (buf), "%s%s", &tmp->name, periods);
687	buf[40] = 0;
688		674
689	if (settings.permanent_exp_ratio) {	675	if (settings.permanent_exp_ratio)
690	#ifdef WIN32
691	sprintf(skills[num_skills_found++],"%slvl:%3d (xp:%I64d/%I64d/%d%%)",	676	snprintf (skills[num_skills_found++], sizeof (skills [0]), "%slvl:%3d (xp:%" PRId64 "/%" PRId64 "/%d%%)",
692	buf,tmp->level,
693	tmp->stats.exp,	677	buf, tmp->level, tmp->stats.exp,
694	level_exp(tmp->level+1, op->expmul),
695	clipped_percent(tmp->perm_exp,tmp->stats.exp));	678	level_exp (tmp->level + 1, op->expmul), clipped_percent (tmp->perm_exp, tmp->stats.exp));
696	#else
697	sprintf(skills[num_skills_found++],"%slvl:%3d (xp:%lld/%lld/%d%%)",
698	buf,tmp->level,
699	tmp->stats.exp,
700	level_exp(tmp->level+1, op->expmul),
701	clipped_percent(tmp->perm_exp,tmp->stats.exp));
702	#endif
703	} else {	679	else
704	#ifdef WIN32
705	sprintf(skills[num_skills_found++], "%slvl:%3d (xp:%I64d/%I64d)",	680	snprintf (skills[num_skills_found++], sizeof (skills [0]), "%slvl:%3d (xp:%" PRId64 "/%" PRId64 ")",
706	buf,tmp->level,
707	tmp->stats.exp,
708	level_exp(tmp->level+1, op->expmul));	681	buf, tmp->level, tmp->stats.exp, level_exp (tmp->level + 1, op->expmul));
709	#else	682
710	sprintf(skills[num_skills_found++], "%slvl:%3d (xp:%lld/%lld)",
711	buf,tmp->level,
712	tmp->stats.exp,
713	level_exp(tmp->level+1, op->expmul));
714	#endif
715	}
716	/* I don't know why some characters get a bunch of skills, but	683	/* I don't know why some characters get a bunch of skills, but
717	* it sometimes happens (maybe a leftover from bugier earlier code	684	* it sometimes happens (maybe a leftover from bugier earlier code
718	* and those character are still about). In any case, lets handle	685	* and those character are still about). In any case, lets handle
719	* it so it doesn't crash the server - otherwise, one character may	686	* it so it doesn't crash the server - otherwise, one character may
720	* crash the server numerous times.	687	* crash the server numerous times.
721	*/	688	*/
722	if (num_skills_found >= NUM_SKILLS) {	689	if (num_skills_found >= NUM_SKILLS)
		690	{
723	new_draw_info(NDI_RED, 0, op, "Your character has too many skills.");	691	new_draw_info (NDI_RED | NDI_REPLY, 0, op, "Your character has too many skills.");
724	new_draw_info(NDI_RED, 0, op, "Something isn't right - contact the server admin");	692	new_draw_info (NDI_RED | NDI_REPLY, 0, op, "Something isn't right - contact the server admin");
725	break;	693	break;
726	}	694	}
727	}	695	}
728	}	696	}
729		697
730	clear_win_info(op);	698	dynbuf_text &msg = msg_dynbuf; msg.clear ();
731	new_draw_info(NDI_UNIQUE, 0,op,"Player skills:");
732	if (num_skills_found > 1) qsort(skills, num_skills_found, MAX_BUF, (int (*)(const void*, const void*))strcmp);
733		699
		700	msg << "T<Player skills:>\n\n";
		701	if (num_skills_found > 1)
		702	qsort (skills, num_skills_found, sizeof (skills [0]), (int (*)(const void *, const void *)) std::strcmp);
		703
734	for (i=0; i<num_skills_found; i++) {	704	for (i = 0; i < num_skills_found; i++)
735	new_draw_info(NDI_UNIQUE, 0, op, skills[i]);	705	msg << " C<" << skills [i] << ">\n";
736	}
737		706
738	new_draw_info_format(NDI_UNIQUE, 0, op,	707	msg << "\nYou can handle " << op->level / 5 + 5 << " weapon improvements.\r";
739	"You can handle %d weapon improvements.",op->level/5+5);
740		708
741	cp = determine_god(op);	709	cp = determine_god (op);
742	new_draw_info_format(NDI_UNIQUE, 0, op,	710	msg << "You worship " << (cp ? cp : "no god at current time") << ".\r";
743	"You worship %s.", cp?cp:"no god at current time");
744		711
745	new_draw_info_format(NDI_UNIQUE,0,op, "Your equipped item power is %d out of %d\n",	712	msg << "Your equipped item power is " << (int)op->contr->item_power
746	op->contr->item_power, (int) (op->level * settings.item_power_factor));	713	<< " out of " << int (op->level * settings.item_power_factor)
		714	<< ".\n";
		715
		716	pl->contr->infobox (MSG_CHANNEL ("skills"), msg);
747	}	717	}
748		718
749	/* use_skill() - similar to invoke command, it executes the skill in the	719	/* use_skill() - similar to invoke command, it executes the skill in the
750	* direction that the user is facing. Returns false if we are unable to	720	* direction that the user is facing. Returns false if we are unable to
751	* change to the requested skill, or were unable to use the skill properly.	721	* change to the requested skill, or were unable to use the skill properly.
752	* This is tricky because skills can have spaces. We basically roll	722	* This is tricky because skills can have spaces. We basically roll
753	* our own find_skill_by_name so we can try to do better string matching.	723	* our own find_skill_by_name so we can try to do better string matching.
754	*/	724	*/
755		725	int
756	int use_skill(object *op, const char *string) {	726	use_skill (object *op, const char *string)
		727	{
757	object *skop;	728	object *skop;
758	size_t len;	729	size_t len;
759		730
760	if (!string) return 0;	731	if (!string)
		732	return 0;
761		733
762	for (skop = op->inv; skop != NULL; skop=skop->below) {	734	for (skop = op->inv; skop; skop = skop->below)
763	if (skop->type == SKILL && QUERY_FLAG(skop, FLAG_CAN_USE_SKILL) &&	735	if ((skop->type == SKILL || skop->type == SKILL_TOOL)
764	!strncasecmp(string, skop->skill, MIN(strlen(string), strlen(skop->skill))))	736	&& !strncmp (string, skop->skill, min (strlen (string), strlen (skop->skill))))
		737	{
		738	skop = find_skill_by_name (op, skop->skill);
765	break;	739	break;
766	else if (skop->type == SKILL_TOOL &&
767	!strncasecmp(string, skop->skill, MIN(strlen(string), strlen(skop->skill))))
768	break;
769	}	740	}
		741
770	if (!skop) {	742	if (!skop)
771	new_draw_info_format(NDI_UNIQUE, 0, op,	743	{
772	"Unable to find skill %s", string);	744	op->failmsgf ("Unable to find skill %s.", string);
773	return 0;	745	return 0;
		746	}
		747
		748	if (!(skill_flags [skop->subtype] & SF_USE))
774	}	749	{
		750	op->failmsgf (
		751	"You feel as if you wanted to do something funny, but you can't remember what. "
		752	"H<The %s skill cannot be C<use_skill>'ed - maybe you need to C<ready_skill> it, "
		753	"use it with some item, or it's always active.>",
		754	&skop->skill
		755	);
		756	return 0;
		757	}
775		758
776	len=strlen(skop->skill);	759	len = strlen (skop->skill);
777		760
778	/* All this logic goes and skips over the skill name to find any	761	/* All this logic goes and skips over the skill name to find any
779	* options given to the skill. Its pretty simple - if there	762	* options given to the skill. Its pretty simple - if there
780	* are extra parameters (as deteremined by string length), we	763	* are extra parameters (as deteremined by string length), we
781	* want to skip over any leading spaces.	764	* want to skip over any leading spaces.
782	*/	765	*/
783	if(len>=strlen(string)) {	766	if (len >= strlen (string))
784	string=NULL;	767	string = NULL;
785	} else {	768	else
		769	{
786	string += len;	770	string += len;
787	while(*string==0x20) string++;	771	while (*string == 0x20)
788	if(strlen(string)==0) string = NULL;	772	string++;
789	}	773
		774	if (strlen (string) == 0)
		775	string = NULL;
790		776	}
		777
791	#ifdef SKILL_UTIL_DEBUG	778	#ifdef SKILL_UTIL_DEBUG
792	LOG(llevDebug,"use_skill() got skill: %s\n",sknum>-1?skills[sknum].name:"none");	779	LOG (llevDebug, "use_skill() got skill: %s\n", sknum > -1 ? skills[sknum].name : "none");
793	#endif	780	#endif
794		781
795	/* Change to the new skill, then execute it. */
796	if(do_skill(op,op,skop, op->facing,string)) return 1;	782	if (do_skill (op, op, skop, op->facing, string))
797
798	return 0;	783	return 1;
799	}
800		784
		785	return 0;
		786	}
801		787
		788	static bool
		789	hth_skill_p (object *skill)
		790	{
		791	return (skill_flags [skill->subtype] & (SF_COMBAT | SF_NEED_ITEM)) == SF_COMBAT;
		792	}
802		793
803	/* This finds the best unarmed skill the player has, and returns	794	/* This finds the first unarmed skill the player has, and returns it.
804	* it. Best can vary a little - we consider clawing to always
805	* be the best for dragons.
806	* This could be more intelligent, eg, look at the skill level
807	* of the skill and go from there (eg, a level 40 puncher is
808	* is probably better than level 1 karate). OTOH, if you
809	* don't bother to set up your skill properly, that is the players
810	* problem (although, it might be nice to have a preferred skill
811	* field the player can set.
812	* Unlike the old code, we don't give out any skills - it is
813	* possible you just don't have any ability to get into unarmed
814	* combat. If everyone race/class should have one, this should
815	* be handled in the starting treasurelists, not in the code.
816	*/	795	*/
		796	static object *
817	static object *find_best_player_hth_skill(object *op)	797	find_player_hth_skill (object *op)
818	{	798	{
819	object *tmp, *best_skill=NULL;
820	int dragon = is_dragon_pl(op), last_skill=sizeof(unarmed_skills), i;
821
822	for (tmp=op->inv; tmp; tmp=tmp->below) {	799	for (object *tmp = op->inv; tmp; tmp = tmp->below)
823	if (tmp->type == SKILL) {	800	if (tmp->type == SKILL && tmp->flag [FLAG_CAN_USE_SKILL] && hth_skill_p (tmp))
824	if (dragon && tmp->subtype == SK_CLAWING) return tmp;	801	return tmp;
825		802
826	/* The order in the array is preferred order. So basically,	803	return 0;
827	* we just cut down the number to search - eg, if we find a skill
828	* early on in flame touch, then we only need to look into the unarmed_array
829	* to the entry before flame touch - don't care about the entries afterward,
830	* because they are infrerior skills.
831	* if we end up finding the best skill (i==0) might as well return
832	* right away - can't get any better than that.
833	*/
834	for (i=0; i<last_skill; i++) {
835	if (tmp->subtype == unarmed_skills[i] && QUERY_FLAG(tmp, FLAG_CAN_USE_SKILL)) {
836	best_skill = tmp;
837	last_skill = i;
838	if (i==0) return best_skill;
839	}
840	}
841	}
842	}
843	return best_skill;
844	}	804	}
845		805
846	/* do_skill_attack() - We have got an appropriate opponent from either	806	/* do_skill_attack() - We have got an appropriate opponent from either
847	* move_player_attack() or skill_attack(). In this part we get on with	807	* move_player_attack() or skill_attack(). In this part we get on with
848	* attacking, take care of messages from the attack and changes in invisible.	808	* attacking, take care of messages from the attack and changes in invisible.
…		…
850	* tmp is the targetted monster.	810	* tmp is the targetted monster.
851	* op is what is attacking	811	* op is what is attacking
852	* string is passed along to describe what messages to describe	812	* string is passed along to describe what messages to describe
853	* the damage.	813	* the damage.
854	*/	814	*/
855		815	static int
856	static int do_skill_attack(object *tmp, object *op, const char *string, object *skill) {	816	do_skill_attack (object *tmp, object *op, const char *string, object *skill)
857	int success;	817	{
		818	if (INVOKE_OBJECT (SKILL_ATTACK, op, ARG_OBJECT (tmp), ARG_STRING (string), ARG_OBJECT (skill)))
		819	return RESULT_INT (0);
858		820
859	/* For Players only: if there is no ready weapon, and no "attack" skill	821	/* For Players only: if there is no ready weapon, and no "attack" skill
860	* is readied either then try to find a skill for the player to use.	822	* is readied either then try to find a skill for the player to use.
861	* it is presumed that if skill is set, it is a valid attack skill (eg,	823	* it is presumed that if skill is set, it is a valid attack skill (eg,
862	* the caller should have set it appropriately). We still want to pass	824	* the caller should have set it appropriately). We still want to pass
863	* through that code if skill is set to change to the skill.	825	* through that code if skill is set to change to the skill.
864	*/	826	*/
865	if(op->type==PLAYER) {	827	if (player *pl = op->contr)
866	if (!QUERY_FLAG(op,FLAG_READY_WEAPON)) {	828	{
867	size_t i;
868
869	if (!skill) {	829	if (skill)
870	/* See if the players chosen skill is a combat skill, and use	830	{
871	* it if appropriate.	831	if (!op->apply (skill))
		832	return 0;
		833	}
		834	else
		835	{
		836	if (!pl->combat_ob)
		837	{
		838	if (op->flag [FLAG_READY_WEAPON])
872	*/	839	{
873	if (op->chosen_skill) {	840	for (tmp = op->inv; tmp; tmp = tmp->below)
874	for (i=0; i<sizeof(unarmed_skills); i++)	841	if (tmp->type == WEAPON && tmp->flag [FLAG_APPLIED])
875	if (op->chosen_skill->subtype == unarmed_skills[i]) {
876	skill = op->chosen_skill;
877	break;	842	break;
878	}	843
		844	if (!tmp)
		845	LOG (llevError, "Could not find applied weapon on %s\n", &op->name);
		846
		847	pl->combat_ob = tmp;
879	}	848	}
880	/* If we didn't find a skill above, look harder for a good skill */	849
881	if (!skill) {	850	if (!pl->combat_ob)
		851	{
		852	/* See if the players chosen skill is a combat skill, and use
		853	* it if appropriate.
		854	*/
		855	if (op->chosen_skill && hth_skill_p (op->chosen_skill))
		856	skill = op->chosen_skill;
		857	else
		858	{
882	skill = find_best_player_hth_skill(op);	859	skill = find_player_hth_skill (op);
883		860
884	if (!skill) {	861	if (!skill)
885	new_draw_info(NDI_BLACK, 0, op, "You have no unarmed combat skills!");	862	new_draw_info (NDI_BLACK, 0, op, "You have no unarmed combat skills!");
886	return 0;
887	}	863	}
		864
		865	op->apply (skill);
		866	}
		867
		868	if (!pl->combat_ob)
		869	{
		870	LOG (llevError, "Could not find anything to attack on %s\n", &op->name);
		871	return 0;
888	}	872	}
889	}	873	}
890	if (skill != op->chosen_skill) {	874
891	/* now try to ready the new skill */	875	if (!op->apply (pl->combat_ob))
892	if(!change_skill(op,skill,0)) { /* oh oh, trouble! */
893	new_draw_info_format(NDI_UNIQUE, 0, tmp, "Couldn't change to skill %s", skill->name);
894	return 0;	876	return 0;
895	}
896	}
897	} else {
898	/* Seen some crashes below where current_weapon is not set,
899	* even though the flag says it is. So if current weapon isn't set,
900	* do some work in trying to find the object to use.
901	*/
902	if (!op->current_weapon) {
903	object *tmp;
904
905	LOG(llevError,"Player %s does not have current weapon set but flag_ready_weapon is set\n",
906	op->name);
907	for (tmp=op->inv; tmp; tmp=tmp->below)
908	if (tmp->type == WEAPON && QUERY_FLAG(tmp, FLAG_APPLIED)) break;
909
910	if (!tmp) {
911	LOG(llevError,"Could not find applied weapon on %s\n",
912	op->name);
913	op->current_weapon=NULL;
914	return 0;
915	} else {
916	op->current_weapon = tmp;
917	}
918	}
919
920	/* Has ready weapon - make sure chosen_skill is set up properly */
921	if (!op->chosen_skill || op->current_weapon->skill != op->chosen_skill->skill) {
922	change_skill(op, find_skill_by_name(op, op->current_weapon->skill), 1);
923	}
924	}	877	}
925	}
926		878
927	/* lose invisiblity/hiding status for running attacks */	879	/* lose invisiblity/hiding status for running attacks */
928		880	if (pl->tmp_invis)
929	if(op->type==PLAYER && op->contr->tmp_invis) {	881	{
930	op->contr->tmp_invis=0;	882	pl->tmp_invis = 0;
931	op->invisible=0;	883	op->invisible = 0;
932	op->hide=0;	884	op->flag [FLAG_HIDDEN] = 0;
933	update_object(op,UP_OBJ_FACE);	885	update_object (op, UP_OBJ_CHANGE);
		886	}
934	}	887	}
935		888
936	success = attack_ob(tmp,op);	889	int success = attack_ob (tmp, op);
937		890
938	/* print appropriate messages to the player */	891	/* print appropriate messages to the player */
939		892
940	if(success && string!=NULL && tmp && !QUERY_FLAG(tmp,FLAG_FREED)) {	893	if (success && string && tmp && !tmp->flag [FLAG_FREED])
		894	{
941	if(op->type==PLAYER)	895	if (op->type == PLAYER)
942	new_draw_info_format(NDI_UNIQUE, 0,op,	896	new_draw_info_format (NDI_UNIQUE, 0, op, "You %s %s!", string, query_name (tmp));
943	"You %s %s!",string,query_name(tmp));
944	else if(tmp->type==PLAYER)	897	else if (tmp->type == PLAYER)
945	new_draw_info_format(NDI_UNIQUE, 0,tmp,	898	new_draw_info_format (NDI_UNIQUE, 0, tmp, "%s %s you!", query_name (op), string);
946	"%s %s you!",query_name(op),string);
947	}	899	}
		900
948	return success;	901	return success;
949	}	902	}
950
951		903
952	/* skill_attack() - Core routine for use when we attack using a skills	904	/* skill_attack() - Core routine for use when we attack using a skills
953	* system. In essence, this code handles	905	* system. In essence, this code handles
954	* all skill-based attacks, ie hth, missile and melee weapons should be	906	* all skill-based attacks, i.e. hth, missile and melee weapons should be
955	* treated here. If an opponent is already supplied by move_player(),	907	* treated here. If an opponent is already supplied by move_player(),
956	* we move right onto do_skill_attack(), otherwise we find if an	908	* we move right onto do_skill_attack(), otherwise we find if an
957	* appropriate opponent exists.	909	* appropriate opponent exists.
958	*	910	*
959	* This is called by move_player() and attack_hth()	911	* This is called by move_player() and attack_hth()
960	*	912	*
961	* Initial implementation by -bt thomas@astro.psu.edu	913	* Initial implementation by -bt thomas@astro.psu.edu
962	*/	914	*/
963		915	int
964	int skill_attack (object *tmp, object *pl, int dir, const char *string, object *skill) {	916	skill_attack (object *tmp, object *pl, int dir, const char *string, object *skill)
		917	{
965	sint16 tx,ty;	918	sint16 tx, ty;
966	mapstruct *m;	919	maptile *m;
967	int mflags;	920	int mflags;
968		921
		922	if (!dir)
969	if(!dir) dir=pl->facing;	923	dir = pl->facing;
		924
970	tx=freearr_x[dir];	925	tx = freearr_x[dir];
971	ty=freearr_y[dir];	926	ty = freearr_y[dir];
972		927
973	/* If we don't yet have an opponent, find if one exists, and attack.	928	/* If we don't yet have an opponent, find if one exists, and attack.
974	* Legal opponents are the same as outlined in move_player_attack()	929	* Legal opponents are the same as outlined in move_player_attack()
975	*/	930	*/
976		931	if (!tmp)
977	if(tmp==NULL) {	932	{
978	m = pl->map;	933	m = pl->map;
979	tx = pl->x + freearr_x[dir];	934	tx = pl->x + freearr_x[dir];
980	ty = pl->y + freearr_y[dir];	935	ty = pl->y + freearr_y[dir];
981		936
982	mflags = get_map_flags(m, &m, tx, ty, &tx, &ty);	937	mflags = get_map_flags (m, &m, tx, ty, &tx, &ty);
983	if (mflags & P_OUT_OF_MAP) return 0;	938	if (mflags & P_OUT_OF_MAP)
984
985	/* space must be blocked for there to be anything interesting to do */
986	if (!OB_TYPE_MOVE_BLOCK(pl, GET_MAP_MOVE_BLOCK(m, tx,ty))) return 0;
987
988	for(tmp=get_map_ob(m, tx, ty); tmp; tmp=tmp->above)
989	if((QUERY_FLAG(tmp,FLAG_ALIVE) && tmp->stats.hp>=0)
990	|| QUERY_FLAG(tmp, FLAG_CAN_ROLL)
991	|| tmp->type==LOCKED_DOOR ) {
992	/* Don't attack party members */
993	if((pl->type==PLAYER && tmp->type==PLAYER) && (pl->contr->party!=NULL
994	&& pl->contr->party==tmp->contr->party))
995	return 0;
996	break;
997	}
998	}
999	if (!tmp) {
1000	if(pl->type==PLAYER)
1001	new_draw_info(NDI_UNIQUE, 0,pl,"There is nothing to attack!");
1002	return 0;	939	return 0;
		940
		941	/* space must be blocked for there to be anything interesting to do */
		942	if (!OB_TYPE_MOVE_BLOCK (pl, GET_MAP_MOVE_BLOCK (m, tx, ty)))
		943	return 0;
		944
		945	for (tmp = GET_MAP_OB (m, tx, ty); tmp; tmp = tmp->above)
		946	if ((tmp->flag [FLAG_ALIVE] && tmp->stats.hp >= 0) || tmp->flag [FLAG_CAN_ROLL] || tmp->type == LOCKED_DOOR)
		947	{
		948	/* Don't attack party members */
		949	if ((pl->type == PLAYER && tmp->type == PLAYER) && (pl->contr->party != NULL && pl->contr->party == tmp->contr->party))
		950	return 0;
		951
		952	break;
		953	}
		954	}
		955
		956	if (!tmp)
1003	}	957	{
		958	if (pl->type == PLAYER)
		959	new_draw_info (NDI_UNIQUE, 0, pl, "There is nothing to attack!");
1004		960
		961	return 0;
		962	}
		963
1005	return do_skill_attack(tmp,pl,string, skill);	964	return do_skill_attack (tmp, pl, string, skill);
1006	}	965	}
1007
1008		966
1009	/* attack_hth() - this handles all hand-to-hand attacks -b.t. */	967	/* attack_hth() - this handles all hand-to-hand attacks -b.t. */
		968
1010	/* July 5, 1995 - I broke up attack_hth() into 2 parts. In the first	969	/* July 5, 1995 - I broke up attack_hth() into 2 parts. In the first
1011	* (attack_hth) we check for weapon use, etc in the second (the new	970	* (attack_hth) we check for weapon use, etc in the second (the new
1012	* function skill_attack() we actually attack.	971	* function skill_attack() we actually attack.
1013	*/	972	*/
1014		973	static int
1015	static int attack_hth(object *pl, int dir, const char *string, object *skill) {	974	attack_hth (object *pl, int dir, const char *string, object *skill)
		975	{
1016	object *enemy=NULL,*weapon;	976	object *enemy = NULL, *weapon;
1017		977
1018	if(QUERY_FLAG(pl, FLAG_READY_WEAPON))	978	if (pl->flag [FLAG_READY_WEAPON])
1019	for(weapon=pl->inv;weapon;weapon=weapon->below) {	979	for (weapon = pl->inv; weapon; weapon = weapon->below)
		980	{
1020	if (weapon->type==WEAPON && QUERY_FLAG(weapon, FLAG_APPLIED)) {	981	if (weapon->type == WEAPON && weapon->flag [FLAG_APPLIED])
1021	CLEAR_FLAG(weapon,FLAG_APPLIED);	982	{
1022	CLEAR_FLAG(pl,FLAG_READY_WEAPON);	983	weapon->clr_flag (FLAG_APPLIED);
1023	fix_player(pl);	984	pl->clr_flag (FLAG_READY_WEAPON);
		985	pl->update_stats ();
1024	if(pl->type==PLAYER) {	986	if (pl->type == PLAYER)
		987	{
1025	new_draw_info(NDI_UNIQUE, 0,pl,"You unwield your weapon in order to attack.");	988	new_draw_info (NDI_UNIQUE, 0, pl, "You unwield your weapon in order to attack.");
1026	esrv_update_item(UPD_FLAGS, pl, weapon);	989	esrv_update_item (UPD_FLAGS, pl, weapon);
1027	}	990	}
		991
1028	break;	992	break;
1029	}	993	}
1030	}	994	}
		995
1031	return skill_attack(enemy,pl,dir,string, skill);	996	return skill_attack (enemy, pl, dir, string, skill);
1032	}	997	}
1033
1034		998
1035	/* attack_melee_weapon() - this handles melee weapon attacks -b.t.	999	/* attack_melee_weapon() - this handles melee weapon attacks -b.t.
1036	* For now we are just checking to see if we have a ready weapon here.	1000	* For now we are just checking to see if we have a ready weapon here.
1037	* But there is a real neato possible feature of this scheme which	1001	* But there is a real neato possible feature of this scheme which
1038	* bears mentioning:	1002	* bears mentioning:
1039	* Since we are only calling this from do_skill() in the future	1003	* Since we are only calling this from do_skill() in the future
1040	* we may make this routine handle 'special' melee weapons attacks	1004	* we may make this routine handle 'special' melee weapons attacks
1041	* (like disarming manuever with sai) based on player SK_level and	1005	* (like disarming manuever with sai) based on player SK_level and
1042	* weapon type.	1006	* weapon type.
1043	*/	1007	*/
1044		1008	static int
1045	static int attack_melee_weapon(object *op, int dir, const char *string, object *skill) {	1009	attack_melee_weapon (object *op, int dir, const char *string, object *skill)
		1010	{
1046		1011
1047	if(!QUERY_FLAG(op, FLAG_READY_WEAPON)) {	1012	if (!op->flag [FLAG_READY_WEAPON])
		1013	{
1048	if(op->type==PLAYER)	1014	if (op->type == PLAYER)
1049	new_draw_info(NDI_UNIQUE, 0,op,"You have no ready weapon to attack with!");	1015	new_draw_info (NDI_UNIQUE, 0, op, "You have no ready weapon to attack with!");
		1016
1050	return 0;	1017	return 0;
1051	}	1018	}
		1019
1052	return skill_attack(NULL,op,dir,string, skill);	1020	return skill_attack (NULL, op, dir, string, skill);
1053
1054	}	1021	}
		1022

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