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Comparing deliantra/server/server/skill_util.C (file contents):
Revision 1.4 by root, Tue Aug 29 05:03:55 2006 UTC vs.
Revision 1.58 by root, Sun Jul 1 05:00:20 2007 UTC

1	/*	1	/*
2	* static char *rcsid_skill_util_c =	2	* This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
3	* "$Id: skill_util.C,v 1.4 2006/08/29 05:03:55 root Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
5	/*
6	CrossFire, A Multiplayer game for X-windows
7
8	Copryight (C) 2002 Mark Wedel & Crossfire Development Team	5	* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
9	Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992,2007 Frank Tore Johansen
10		7	*
11	This program is free software; you can redistribute it and/or modify	8	* Crossfire TRT is free software: you can redistribute it and/or modify
12	it under the terms of the GNU General Public License as published by	9	* it under the terms of the GNU General Public License as published by
13	the Free Software Foundation; either version 2 of the License, or	10	* the Free Software Foundation, either version 3 of the License, or
14	(at your option) any later version.	11	* (at your 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 GNU General Public License
22	along with this program; if not, write to the Free Software	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
23	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	*
24
25	The author can be reached via e-mail to crossfire-devel@real-time.com	21	* The authors can be reached via e-mail to <crossfire@schmorp.de>
26	*/	22	*/
27		23
28	/* Created July 95 to separate skill utilities from actual skills -b.t. */	24	/* Created July 95 to separate skill utilities from actual skills -b.t. */
29		25
30	/* Reconfigured skills code to allow linking of skills to experience	26	/* Reconfigured skills code to allow linking of skills to experience
31	* categories. This is done solely through the init_new_exp_system() fctn.	27	* categories. This is done solely through the init_new_exp_system() fctn.
…		…
38	* experience. Calc_skill_exp() handles the gained experience using	34	* experience. Calc_skill_exp() handles the gained experience using
39	* modifications in the skills[] table. - b.t.	35	* modifications in the skills[] table. - b.t.
40	*/	36	*/
41		37
42	/* define the following for skills utility debuging */	38	/* define the following for skills utility debuging */
		39
43	/* #define SKILL_UTIL_DEBUG */	40	/* #define SKILL_UTIL_DEBUG */
44
45	#define WANT_UNARMED_SKILLS
46		41
47	#include <global.h>	42	#include <global.h>
48	#include <object.h>	43	#include <object.h>
49	#ifndef __CEXTRACT__
50	#include <sproto.h>	44	#include <sproto.h>
51	#endif
52	#include <living.h> /* for defs of STR,CON,DEX,etc. -b.t.*/	45	#include <living.h> /* for defs of STR,CON,DEX,etc. -b.t. */
53	#include <spells.h>	46	#include <spells.h>
54		47
		48	const uint8_t skill_flags[NUM_SKILLS] = {
		49	0, // SK_NONE
		50	# define def(uc, flags) flags,
		51	# include "skillinc.h"
		52	# undef def
		53	};
		54
55	static int attack_hth(object *pl, int dir, const char *string, object *skill);	55	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);	56	static int attack_melee_weapon (object *op, int dir, const char *string, object *skill);
57
58	const char *skill_names[NUM_SKILLS];
59		57
60	/* init_skills basically just sets up the skill_names table	58	/* init_skills basically just sets up the skill_names table
61	* above. The index into the array is set up by the	59	* above. The index into the array is set up by the
62	* subtypes.	60	* subtypes.
63	*/	61	*/
		62	void
64	void init_skills(void) {	63	init_skills (void)
65	int i;	64	{
66	archetype *at;	65	for_all_archetypes (at)
67
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) {	66	if (at->type == SKILL)
		67	{
73	if (skill_names[at->clone.subtype] != NULL) {	68	if (skill_names[at->subtype])
74	LOG(llevError, "init_skills: multiple skill using same subtype %d, %s, %s\n",	69	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);	70	at->subtype, &skill_names[at->subtype], &at->skill);
76	} else {	71	else
77	skill_names[at->clone.subtype] = add_refcount(at->clone.skill);	72	skill_names[at->subtype] = at->skill;
78	}
79	}
80	}	73	}
81		74
82	/* This isn't really an error if there is no skill subtype set, but	75	/* This isn't really an error if there is no skill subtype set, but
83	* checking for this may catch some user errors.	76	* checking for this may catch some user errors.
84	*/	77	*/
85	for (i=1; i<NUM_SKILLS; i++) {	78	for (int i = 1; i < NUM_SKILLS; i++)
86	if (!skill_names[i])	79	if (!skill_names[i])
87	LOG(llevError, "init_skills: skill subtype %d doesn't have a name?\n",	80	LOG (llevError, "init_skills: skill subtype %d doesn't have a name?\n", i);
88	i);
89	}
90	}	81	}
91
92		82
93	/* This function goes through the player inventory and sets	83	/* This function goes through the player inventory and sets
94	* up the last_skills[] array in the player object.	84	* up the last_skills[] array in the player object.
95	* the last_skills[] is used to more quickly lookup skills -	85	* the last_skills[] is used to more quickly lookup skills -
96	* mostly used for sending exp.	86	* mostly used for sending exp.
97	*/	87	*/
		88	void
98	void link_player_skills(object *op)	89	link_player_skills (object *op)
99	{	90	{
100	object *tmp;
101
102	for (tmp=op->inv; tmp; tmp=tmp->below) {	91	for (object *tmp = op->inv; tmp; tmp = tmp->below)
103	if (tmp->type == SKILL) {	92	if (tmp->type == SKILL)
		93	{
104	/* This is really a warning, hence no else below */	94	/* 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) {	95	if (op->contr->last_skill_ob[tmp->subtype] && op->contr->last_skill_ob[tmp->subtype] != tmp)
106	LOG(llevError,"Multiple skills with the same subtype? %s, %s\n",	96	LOG (llevError, "Multiple skills with the same subtype? %s, %s\n",
107	op->contr->last_skill_ob[tmp->subtype]->skill, tmp->skill);	97	&op->contr->last_skill_ob[tmp->subtype]->skill, &tmp->skill);
108	}	98
109	if (tmp->subtype >= NUM_SKILLS) {	99	if (tmp->subtype >= NUM_SKILLS)
110	LOG(llevError,"Invalid subtype number %d (range 0-%d)\n",	100	LOG (llevError, "Invalid subtype number %d (range 0-%d)\n", tmp->subtype, NUM_SKILLS);
111	tmp->subtype, NUM_SKILLS);	101	else
112	} else {	102	{
113	op->contr->last_skill_ob[tmp->subtype] = tmp;	103	op->contr->last_skill_ob[tmp->subtype] = tmp;
114	op->contr->last_skill_exp[tmp->subtype] = -1;	104	op->contr->ns->last_skill_exp[tmp->subtype] = -1; //TODO: this should go
115	}	105	}
116	}
117	}	106	}
		107	}
		108
		109	static object *
		110	find_skill (object *who, const shstr &sh)
		111	{
		112	for (object *tmp = who->inv; tmp; tmp = tmp->below)
		113	if (tmp->skill == sh && tmp->type == SKILL)
		114	return tmp;
		115
		116	return 0;
118	}	117	}
119		118
120	/* This returns the skill pointer of the given name (the	119	/* This returns the skill pointer of the given name (the
121	* one that accumlates exp, has the level, etc).	120	* one that accumulates exp, has the level, etc).
122	*	121	*
123	* It is presumed that the player will be needing to actually	122	* 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	123	* use the skill, so thus if use of the skill requires a skill
125	* tool, this code will equip it.	124	* tool, this code will equip it.
126	*/	125	*/
		126	object *
127	object *find_skill_by_name(object *who, const char *name)	127	find_skill_by_name (object *who, const shstr &sh)
128	{	128	{
129	object *skill=NULL, *skill_tool=NULL, *tmp;	129	object *skill_tool = 0;
130		130
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) {	131	for (object *tmp = who->inv; tmp; tmp = tmp->below)
138	if (tmp->type == SKILL && !strncasecmp(name, tmp->skill, strlen(name)) &&	132	if (tmp->skill == sh)
139	strlen(tmp->skill) >= strlen(name)) skill = tmp;	133	{
140		134	if (tmp->type == SKILL && (tmp->flag [FLAG_CAN_USE_SKILL] || tmp->flag [FLAG_APPLIED]))
		135	/* If this is a skill that can be used without applying tool, return it */
		136	return splay (tmp);
141	/* Try to find appropriate skilltool. If the player has one already	137	/* Try to find appropriate skilltool. If the player has one already
142	* applied, we try to keep using that one.	138	* applied, we try to keep using that one.
143	*/	139	*/
144	else if (tmp->type == SKILL_TOOL && !strncasecmp(name, tmp->skill, strlen(name)) &&	140	else if (tmp->type == SKILL_TOOL && !skill_tool)
145	strlen(tmp->skill) >= strlen(name)) {	141	skill_tool = tmp;
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;
149	}
150	}	142	}
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		143
		144	if (!skill_tool)
		145	return 0;
		146
154	/* Player has a tool to use the skill. IF not applied, apply it -	147	/* 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	148	* if not successful, return null. If they do have the skill tool
156	* but not the skill itself, give it to them.	149	* but not the skill itself, give it to them.
157	*/	150	*/
158	if (skill_tool) {	151	object *skill = find_skill (who, skill_tool->skill);
159	if (!QUERY_FLAG(skill_tool, FLAG_APPLIED)) {	152
160	if (apply_special(who, skill_tool, 0)) return NULL;
161	}
162	if (!skill) {	153	if (!skill)
		154	{
163	skill = give_skill_by_name(who, skill_tool->skill);	155	skill = give_skill_by_name (who, skill_tool->skill);
164	link_player_skills(who);	156	link_player_skills (who);
165	}
166	return skill;
167	}	157	}
		158
		159	if (!skill_tool->flag [FLAG_APPLIED])
		160	if (apply_special (who, splay (skill_tool), AP_APPLY | AP_NO_READY))
		161	return 0;
		162
		163	return splay (skill);
		164	}
		165
		166	object *
		167	find_skill_by_name (object *who, const char *name)
		168	{
		169	if (!name)
168	return NULL;	170	return 0;
169	}
170		171
		172	for (object *tmp = who->inv; tmp; tmp = tmp->below)
		173	if ((tmp->type == SKILL || tmp->type == SKILL_TOOL)
		174	&& tmp->skill.begins_with (name))
		175	if (object *skop = find_skill_by_name (who, tmp->skill))
		176	return skop;
		177
		178	return 0;
		179	}
171		180
172	/* This returns the skill pointer of the given name (the	181	/* This returns the skill pointer of the given name (the
173	* one that accumlates exp, has the level, etc).	182	* one that accumulates exp, has the level, etc).
174	*	183	*
175	* It is presumed that the player will be needing to actually	184	* 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	185	* use the skill, so thus if use of the skill requires a skill
177	* tool, this code will equip it.	186	* tool, this code will equip it.
178	*	187	*
179	* This code is basically the same as find_skill_by_name() above,	188	* This code is basically the same as find_skill_by_name() above,
180	* but instead a skill name, we search by matching number.	189	* but instead a skill name, we search by matching number.
181	* this replaces find_skill.	190	* this replaces find_skill.
182	*/	191	*/
		192	object *
183	object *find_skill_by_number(object *who, int skillno)	193	find_skill_by_number (object *who, int skillno)
184	{	194	{
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) {	195	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) {	196	if (tmp->type == SKILL && tmp->subtype == skillno)
196	if (QUERY_FLAG(tmp, FLAG_APPLIED)) skill_tool = tmp;	197	if (object *skop = find_skill_by_name (who, tmp->skill))
197	else if (!skill_tool || !QUERY_FLAG(skill_tool, FLAG_APPLIED))	198	return skop;
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		199
204	/* Player has a tool to use the skill. IF not applied, apply it -	200	return 0;
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;
217	}
218	return NULL;
219	}	201	}
220		202
221	/* This changes the objects skill to new_skill.	203	/* This changes the objects chosen_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	204	* return 1 on success, 0 on error
231	*/	205	*/
232		206	bool
233	int change_skill (object *who, object *new_skill, int flag)	207	object::change_skill (object *new_skill)
234	{	208	{
235	int old_range;
236
237	if ( who->type != PLAYER )	209	if (type != PLAYER)
238	return 0;	210	return 0;
239
240	old_range = who->contr->shoottype;
241		211
242	if (who->chosen_skill && who->chosen_skill == new_skill)	212	// optimise this supposedly common case
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)	213	if (new_skill == 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;	214	return 1;
263	}
264		215
265	/* This function just clears the chosen_skill and range_skill values	216	if (chosen_skill)
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	}	217	{
		218	chosen_skill->flag [FLAG_APPLIED] = false;
		219	change_abil (this, chosen_skill);
		220	}
		221
		222	chosen_skill = new_skill;
		223
		224	if (chosen_skill)
		225	{
		226	chosen_skill->flag [FLAG_APPLIED] = true;
		227	change_abil (this, chosen_skill);
		228	}
		229
		230	// always clear current weapon, as the selected skill could
		231	// conflict with the current weapon skill, which would go
		232	// undetected and exp would be given to the wrong skill.
		233	current_weapon = 0;
		234
		235	update_stats ();
		236	return 1;
277	}	237	}
278		238
279	/* do_skill() - Main skills use function-similar in scope to cast_spell().	239	/* 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.	240	* 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	241	* 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	244	* 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	245	* from know if a skill was actually used, as many skills don't
286	* give any exp for their direct use (eg, throwing).	246	* give any exp for their direct use (eg, throwing).
287	* It returns 0 if no skill was used.	247	* It returns 0 if no skill was used.
288	*/	248	*/
289		249	int
290	int do_skill (object *op, object *part, object *skill, int dir, const char *string) {	250	do_skill (object *op, object *part, object *skill, int dir, const char *string)
		251	{
291	int success=0, exp=0;	252	int success = 0, exp = 0;
292	int did_alc = 0;	253	int did_alc = 0;
293	object *tmp, *next;
294		254
295	if (!skill) return 0;	255	if (!skill)
		256	return 0;
296		257
297	/* The code below presumes that the skill points to the object that	258	/* 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	259	* 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	260	* 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.	261	* the player doesn't have a bucket for that, create one.
301	*/	262	*/
302	if (skill->type != SKILL && op->type == PLAYER) {	263	if (skill->type != SKILL && op->type == PLAYER)
		264	{
303	for (tmp = op->inv; tmp!=NULL; tmp=tmp->below) {	265	for (object *tmp = op->inv; tmp; tmp = tmp->below)
304	if (tmp->type == SKILL && tmp->skill == skill->skill) break;	266	if (tmp->type == SKILL && tmp->skill == skill->skill)
305	}	267	{
		268	skill = tmp;
		269	goto found;
		270	}
		271
306	if (!tmp) tmp=give_skill_by_name(op, skill->skill);	272	skill = give_skill_by_name (op, skill->skill);
307	skill = tmp;	273	found: ;
308	}	274	}
309		275
310	// skill, by_whom, on_which_object, which direction, skill_argument	276	// 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)))	277	if (INVOKE_OBJECT (USE_SKILL, skill, ARG_OBJECT (op), ARG_OBJECT (part), ARG_INT (dir), ARG_STRING (string)))
312	return 0;	278	return 0;
313		279
314	switch(skill->subtype) {	280	switch (skill->subtype)
		281	{
315	case SK_LEVITATION:	282	case SK_LEVITATION:
316	/* Not 100% sure if this will work with new movement code -	283	/* Not 100% sure if this will work with new movement code -
317	* the levitation skill has move_type for flying, so when	284	* the levitation skill has move_type for flying, so when
318	* equipped, that should transfer to player, when not,	285	* equipped, that should transfer to player, when not,
319	* shouldn't.	286	* shouldn't.
320	*/	287	*/
321	if(QUERY_FLAG(skill,FLAG_APPLIED)) {	288	if (QUERY_FLAG (skill, FLAG_APPLIED))
		289	{
322	CLEAR_FLAG(skill,FLAG_APPLIED);	290	CLEAR_FLAG (skill, FLAG_APPLIED);
323	new_draw_info(NDI_UNIQUE,0,op,"You come to earth.");	291	new_draw_info (NDI_UNIQUE, 0, op, "You come to earth.");
324	}	292	}
325	else {	293	else
		294	{
326	SET_FLAG(skill,FLAG_APPLIED);	295	SET_FLAG (skill, FLAG_APPLIED);
327	new_draw_info(NDI_UNIQUE,0,op,"You rise into the air!.");	296	new_draw_info (NDI_UNIQUE, 0, op, "You rise into the air!.");
328	}	297	}
329	fix_player(op);	298
		299	op->update_stats ();
330	success=1;	300	success = 1;
331	break;	301	break;
332		302
333	case SK_STEALING:	303	case SK_STEALING:
334	exp = success = steal(op, dir, skill);	304	exp = success = steal (op, dir, skill);
335	break;	305	break;
336		306
337	case SK_LOCKPICKING:	307	case SK_LOCKPICKING:
338	exp = success = pick_lock(op, dir, skill);	308	exp = success = pick_lock (op, dir, skill);
339	break;	309	break;
340		310
341	case SK_HIDING:	311	case SK_HIDING:
342	exp = success = hide(op, skill);	312	exp = success = hide (op, skill);
343	break;	313	break;
344		314
345	case SK_JUMPING:	315	case SK_JUMPING:
346	success = jump(op, dir, skill);	316	success = jump (op, dir, skill);
347	break;	317	break;
348		318
349	case SK_INSCRIPTION:	319	case SK_INSCRIPTION:
350	exp = success = write_on_item(op,string, skill);	320	exp = success = write_on_item (op, string, skill);
351	break;	321	break;
352		322
353	case SK_MEDITATION:	323	case SK_MEDITATION:
354	meditate(op, skill);	324	meditate (op, skill);
355	success=1;	325	success = 1;
356	break;	326	break;
357	/* note that the following 'attack' skills gain exp through hit_player() */	327	/* note that the following 'attack' skills gain exp through hit_player() */
358		328
359	case SK_KARATE:	329	case SK_KARATE:
360	(void) attack_hth(op,dir,"karate-chopped", skill);	330	attack_hth (op, dir, "karate-chopped", skill);
361	break;	331	break;
362		332
363	case SK_PUNCHING:	333	case SK_PUNCHING:
364	(void) attack_hth(op,dir,"punched", skill);	334	attack_hth (op, dir, "punched", skill);
365	break;	335	break;
366		336
367	case SK_FLAME_TOUCH:	337	case SK_FLAME_TOUCH:
368	(void) attack_hth(op,dir,"flamed", skill);	338	attack_hth (op, dir, "flamed", skill);
369	break;	339	break;
370		340
371	case SK_SPARK_TOUCH:	341	case SK_SPARK_TOUCH:
372	(void) attack_hth(op,dir,"zapped", skill);	342	attack_hth (op, dir, "zapped", skill);
373	break;	343	break;
374		344
375	case SK_SHIVER:	345	case SK_SHIVER:
376	(void) attack_hth(op,dir,"froze", skill);	346	attack_hth (op, dir, "froze", skill);
377	break;	347	break;
378		348
379	case SK_ACID_SPLASH:	349	case SK_ACID_SPLASH:
380	(void) attack_hth(op,dir,"dissolved", skill);	350	attack_hth (op, dir, "dissolved", skill);
381	break;	351	break;
382		352
383	case SK_POISON_NAIL:	353	case SK_POISON_NAIL:
384	(void) attack_hth(op,dir,"injected poison into", skill);	354	attack_hth (op, dir, "injected poison into", skill);
385	break;	355	break;
386		356
387	case SK_CLAWING:	357	case SK_CLAWING:
388	(void) attack_hth(op,dir,"clawed", skill);	358	attack_hth (op, dir, "clawed", skill);
389	break;	359	break;
390		360
391	case SK_ONE_HANDED_WEAPON:	361	case SK_ONE_HANDED_WEAPON:
392	case SK_TWO_HANDED_WEAPON:	362	case SK_TWO_HANDED_WEAPON:
393	(void) attack_melee_weapon(op,dir,NULL, skill);	363	attack_melee_weapon (op, dir, NULL, skill);
394	break;	364	break;
395		365
396	case SK_FIND_TRAPS:	366	case SK_FIND_TRAPS:
397	exp = success = find_traps(op, skill);	367	exp = success = find_traps (op, skill);
398	break;	368	break;
399		369
400	case SK_SINGING:	370	case SK_SINGING:
401	exp = success = singing(op,dir, skill);	371	exp = success = singing (op, dir, skill);
402	break;	372	break;
403		373
404	case SK_ORATORY:	374	case SK_ORATORY:
405	exp = success = use_oratory(op,dir, skill);	375	exp = success = use_oratory (op, dir, skill);
406	break;	376	break;
407		377
408	case SK_SMITHERY:	378	case SK_SMITHERY:
409	case SK_BOWYER:	379	case SK_BOWYER:
410	case SK_JEWELER:	380	case SK_JEWELER:
411	case SK_ALCHEMY:	381	case SK_ALCHEMY:
412	case SK_THAUMATURGY:	382	case SK_THAUMATURGY:
413	case SK_LITERACY:	383	case SK_LITERACY:
414	case SK_WOODSMAN:	384	case SK_WOODSMAN:
415	/* first, we try to find a cauldron, and do the alchemy thing.	385	/* first, we try to find a cauldron, and do the alchemy thing.
416	* failing that, we go and identify stuff.	386	* failing that, we go and identify stuff.
417	*/	387	*/
418	for (tmp=get_map_ob(op->map, op->x, op->y); tmp != NULL;tmp=next) {	388	for (object *next, *tmp = GET_MAP_OB (op->map, op->x, op->y); tmp; tmp = next)
419	next=tmp->above;	389	{
		390	next = tmp->above;
		391
420	if(QUERY_FLAG(tmp, FLAG_IS_CAULDRON)) {	392	if (QUERY_FLAG (tmp, FLAG_IS_CAULDRON))
		393	{
421	attempt_do_alchemy(op, tmp);	394	attempt_do_alchemy (op, tmp);
		395
422	if (QUERY_FLAG(tmp, FLAG_APPLIED))	396	if (QUERY_FLAG (tmp, FLAG_APPLIED))
423	esrv_send_inventory(op, tmp);	397	esrv_send_inventory (op, tmp);
424	did_alc=1;	398
425	}	399	did_alc = 1;
426	}	400	}
		401	}
		402
427	if (did_alc == 0)	403	if (did_alc == 0)
428	exp = success = skill_ident(op,skill);	404	exp = success = skill_ident (op, skill);
		405
429	break;	406	break;
430		407
431	case SK_DET_MAGIC:	408	case SK_DET_MAGIC:
432	case SK_DET_CURSE:	409	case SK_DET_CURSE:
433	exp = success = skill_ident(op,skill);	410	exp = success = skill_ident (op, skill);
434	break;	411	break;
435		412
436	case SK_DISARM_TRAPS:	413	case SK_DISARM_TRAPS:
437	exp = success = remove_trap(op,dir, skill);	414	exp = success = remove_trap (op, dir, skill);
438	break;	415	break;
439		416
440	case SK_THROWING:	417	case SK_THROWING:
441	success = skill_throw(op,part,dir,string, skill);	418	success = skill_throw (op, part, dir, string, skill);
442	break;	419	break;
443		420
444	case SK_SET_TRAP:	421	case SK_SET_TRAP:
445	new_draw_info(NDI_UNIQUE, 0,op,"This skill is not currently implemented.");	422	new_draw_info (NDI_UNIQUE, 0, op, "This skill is not currently implemented.");
446	break;	423	break;
447		424
448	case SK_USE_MAGIC_ITEM:	425	case SK_USE_MAGIC_ITEM:
449	case SK_MISSILE_WEAPON:	426	case SK_MISSILE_WEAPON:
450	new_draw_info(NDI_UNIQUE, 0,op,"There is no special attack for this skill.");	427	new_draw_info (NDI_UNIQUE, 0, op, "There is no special attack for this skill.");
451	break;	428	break;
452		429
453	case SK_PRAYING:	430	case SK_PRAYING:
454	success = pray(op, skill);	431	success = pray (op, skill);
455	break;	432	break;
456		433
457	case SK_BARGAINING:	434	case SK_BARGAINING:
458	success = describe_shop(op);	435	success = describe_shop (op);
459	break;	436	break;
460		437
461	case SK_SORCERY:	438	case SK_SORCERY:
462	case SK_EVOCATION:	439	case SK_EVOCATION:
463	case SK_PYROMANCY:	440	case SK_PYROMANCY:
464	case SK_SUMMONING:	441	case SK_SUMMONING:
465	case SK_CLIMBING:	442	case SK_CLIMBING:
466	new_draw_info(NDI_UNIQUE, 0,op,"This skill is already in effect.");	443	new_draw_info (NDI_UNIQUE, 0, op, "This skill is already in effect.");
467	break;	444	break;
468		445
469	default:	446	default:
470	LOG(llevDebug,"%s attempted to use unknown skill: %d\n"	447	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;	448	break;
473	}	449	}
474		450
475	/* For players we now update the speed_left from using the skill.	451	/* 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	452	* Monsters have no skill use time because of the random nature in
477	* which use_monster_skill is called already simulates this.	453	* which use_monster_skill is called already simulates this.
478	* If certain skills should take more/less time, that should be	454	* If certain skills should take more/less time, that should be
479	* in the code for the skill itself.	455	* in the code for the skill itself.
480	*/	456	*/
481
482	if(op->type==PLAYER) op->speed_left -= 1.0;
483		457
		458	if (op->type == PLAYER)
		459	op->speed_left -= 1.f;
		460
484	/* this is a good place to add experience for successfull use of skills.	461	/* this is a good place to add experience for successfull use of skills.
485	* Note that add_exp() will figure out player/monster experience	462	* Note that add_exp() will figure out player/monster experience
486	* gain problems.	463	* gain problems.
487	*/	464	*/
488		465
		466	if (success && exp)
489	if(success && exp) change_exp(op,exp, skill->skill, 0);	467	change_exp (op, exp, skill->skill, 0);
490		468
491	return success;	469	return success;
492	}	470	}
493		471
494	/* calc_skill_exp() - calculates amount of experience can be gained for	472	/* calc_skill_exp() - calculates amount of experience can be gained for
495	* successfull use of a skill. Returns value of experience gain.	473	* successfull use of a skill. Returns value of experience gain.
496	* Here we take the view that a player must 'overcome an opponent'	474	* Here we take the view that a player must 'overcome an opponent'
…		…
514	* op is the object that was 'defeated'.	492	* op is the object that was 'defeated'.
515	* skill is the skill used. If no skill is used, it should just	493	* skill is the skill used. If no skill is used, it should just
516	* point back to who.	494	* point back to who.
517	*	495	*
518	*/	496	*/
519		497	int
520	int calc_skill_exp(object *who, object *op, object *skill) {	498	calc_skill_exp (object *who, object *op, object *skill)
		499	{
521	int op_exp=0,op_lvl= 0;	500	int op_exp = 0, op_lvl = 0;
522	float base,value,lvl_mult=0.0;	501	float base, value, lvl_mult = 0.0;
523		502
524	if (!skill) skill = who;	503	if (!skill)
		504	skill = who;
525		505
526	/* Oct 95 - where we have an object, I expanded our treatment	506	/* Oct 95 - where we have an object, I expanded our treatment
527	* to 3 cases:	507	* to 3 cases:
528	* non-living magic obj, runes and everything else.	508	* non-living magic obj, runes and everything else.
529	*	509	*
530	* If an object is not alive and magical we set the base exp higher to	510	* 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	511	* help out exp awards for skill_ident skills. Also, if
532	* an item is type RUNE, we give out exp based on stats.Cha	512	* an item is type RUNE, we give out exp based on stats.Cha
533	* and level (this was the old system) -b.t.	513	* and level (this was the old system) -b.t.
534	*/	514	*/
535		515
536	if(!op) { /* no item/creature */	516	if (!op)
		517	{ /* no item/creature */
537	op_lvl= who->map->difficulty < 1 ? 1: who->map->difficulty;	518	op_lvl = who->map->difficulty < 1 ? 1 : who->map->difficulty;
538	op_exp = 0;	519	op_exp = 0;
539	} else if(op->type==RUNE || op->type==TRAP) { /* all traps. If stats.Cha > 1 we use that	520	}
540	* for the amount of experience */	521	else if (op->type == RUNE || op->type == TRAP)
		522	{ /* all traps. If stats.Cha > 1 we use that
		523	* for the amount of experience */
541	op_exp = op->stats.Cha>1 ? op->stats.Cha : op->stats.exp;	524	op_exp = op->stats.Cha > 1 ? op->stats.Cha : op->stats.exp;
542	op_lvl = op->level;	525	op_lvl = op->level;
543	} else { /* all other items/living creatures */	526	}
		527	else
		528	{ /* all other items/living creatures */
544	op_exp = op->stats.exp;	529	op_exp = op->stats.exp;
545	op_lvl = op->level;	530	op_lvl = op->level;
546	if(!QUERY_FLAG(op,FLAG_ALIVE)) { /* for ident/make items */	531	if (!QUERY_FLAG (op, FLAG_ALIVE))
		532	{ /* for ident/make items */
547	op_lvl += 5 * abs(op->magic);	533	op_lvl += 5 * abs (op->magic);
548	}	534	}
549	}	535	}
550		536
551	if(op_lvl<1) op_lvl = 1;	537	if (op_lvl < 1)
		538	op_lvl = 1;
552		539
553	if(who->type!=PLAYER) { /* for monsters only */	540	if (who->type != PLAYER)
		541	{ /* for monsters only */
554	return ((int) (op_exp*0.1)+1); /* we add one to insure positive value is returned */	542	return ((int) (op_exp * 0.1) + 1); /* we add one to insure positive value is returned */
		543	}
		544	else
555	} else { /* for players */	545	{ /* for players */
556	base = op_exp;	546	base = op_exp;
557	/* if skill really is a skill, then we can look at the skill archetype for	547	/* if skill really is a skill, then we can look at the skill archetype for
558	* bse reward value (exp) and level multiplier factor.	548	* bse reward value (exp) and level multiplier factor.
559	*/	549	*/
560	if (skill->type == SKILL) {	550	if (skill->type == SKILL)
		551	{
561	base += skill->arch->clone.stats.exp;	552	base += skill->arch->stats.exp;
562	if (settings.simple_exp) {	553	if (settings.simple_exp)
563	if (skill->arch->clone.level)	554	{
		555	if (skill->arch->level)
564	lvl_mult = (float) skill->arch->clone.level / 100.0;	556	lvl_mult = (float) skill->arch->level / 100.0;
565	else	557	else
566	lvl_mult = 1.0; /* no adjustment */	558	lvl_mult = 1.0; /* no adjustment */
567	}	559	}
568	else {	560	else
569	if (skill->level)	561	{
		562	if (skill->level)
570	lvl_mult = ((float) skill->arch->clone.level * (float) op_lvl) / ((float) skill->level * 100.0);	563	lvl_mult = ((float) skill->arch->level * (float) op_lvl) / ((float) skill->level * 100.0);
571	else	564	else
572	lvl_mult = 1.0;	565	lvl_mult = 1.0;
573	}	566	}
574	} else {	567	}
		568	else
		569	{
575	/* Don't divide by zero here! */	570	/* Don't divide by zero here! */
576	lvl_mult = (float) op_lvl / (float) (skill->level?skill->level:1);	571	lvl_mult = (float) op_lvl / (float) (skill->level ? skill->level : 1);
577	}	572	}
578	}	573	}
579		574
580	/* assemble the exp total, and return value */	575	/* assemble the exp total, and return value */
581		576
582	value = base * lvl_mult;	577	value = base * lvl_mult;
		578	if (value < 1)
583	if (value < 1) value=1; /* Always give at least 1 exp point */	579	value = 1; /* Always give at least 1 exp point */
584		580
585	#ifdef SKILL_UTIL_DEBUG	581	#ifdef SKILL_UTIL_DEBUG
586	LOG(llevDebug,"calc_skill_exp(): who: %s(lvl:%d) op:%s(lvl:%d)\n",	582	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	583	#endif
589	return ( (int) value);	584	return ((int) value);
590	}	585	}
591		586
592	/* Learn skill. This inserts the requested skill in the player's	587	/* Learn skill. This inserts the requested skill in the player's
593	* inventory. The skill field of the scroll should have the	588	* inventory. The skill field of the scroll should have the
594	* exact name of the requested skill.	589	* exact name of the requested skill.
595	* This one actually teaches the player the skill as something	590	* This one actually teaches the player the skill as something
596	* they can equip.	591	* they can equip.
597	* Return 0 if the player knows the skill, 1 if the	592	* Return 0 if the player knows the skill, 1 if the
598	* player learns the skill, 2 otherwise.	593	* player learns the skill, 2 otherwise.
599	*/	594	*/
600
601	int	595	int
602	learn_skill (object *pl, object *scroll) {	596	learn_skill (object *pl, object *scroll)
603	object *tmp;	597	{
604
605	if (!scroll->skill) {	598	if (!scroll->skill)
		599	{
606	LOG(llevError,"skill scroll %s does not have skill pointer set.\n", scroll->name);	600	LOG (llevError, "skill scroll %s does not have skill pointer set.\n", &scroll->name);
607	return 2;	601	return 2;
608	}	602	}
609		603
610	/* can't use find_skill_by_name because we want skills the player knows	604	object *tmp = find_skill (pl, scroll->skill);
611	* but can't use natively.
612	*/
613		605
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 */	606	/* player already knows it */
618	if (tmp && QUERY_FLAG(tmp, FLAG_CAN_USE_SKILL)) return 0;	607	if (tmp && QUERY_FLAG (tmp, FLAG_CAN_USE_SKILL))
		608	return 0;
619		609
620
621
622	/* now a random change to learn, based on player Int.	610	/* now a random change to learn, based on player Int.
623	* give bonus based on level - otherwise stupid characters	611	* give bonus based on level - otherwise stupid characters
624	* might never be able to learn anything.	612	* might never be able to learn anything.
625	*/	613	*/
626	if(random_roll(0, 99, pl, PREFER_LOW)>(learn_spell[pl->stats.Int] + (pl->level/5)))	614	if (random_roll (0, 99, pl, PREFER_LOW) > (learn_spell[pl->stats.Int] + (pl->level / 5)))
627	return 2; /* failure :< */	615	return 2; /* failure :< */
628		616
629	if (!tmp)	617	if (!tmp)
630	tmp = give_skill_by_name(pl, scroll->skill);	618	tmp = give_skill_by_name (pl, scroll->skill);
631		619
632	if (!tmp) {	620	if (!tmp)
		621	{
633	LOG(llevError,"skill scroll %s does not have valid skill name (%s).\n", scroll->name, scroll->skill);	622	LOG (llevError, "skill scroll %s does not have valid skill name (%s).\n", &scroll->name, &scroll->skill);
634	return 2;	623	return 2;
635	}	624	}
636		625
637	SET_FLAG(tmp, FLAG_CAN_USE_SKILL);	626	SET_FLAG (tmp, FLAG_CAN_USE_SKILL);
638	link_player_skills(pl);	627	link_player_skills (pl);
639	return 1;	628	return 1;
640	}	629	}
641		630
642	/* Gives a percentage clipped to 0% -> 100% of a/b. */	631	/* Gives a percentage clipped to 0% -> 100% of a/b. */
643	/* Probably belongs in some global utils-type file? */	632	/* Probably belongs in some global utils-type file? */
		633	static int
644	static int clipped_percent(sint64 a, sint64 b)	634	clipped_percent (sint64 a, sint64 b)
645	{	635	{
646	int rv;	636	int rv;
647		637
648	if (b <= 0)	638	if (b <= 0)
649	return 0;	639	return 0;
650		640
651	rv = (int)((100.0f * ((float)a) / ((float)b) ) + 0.5f);	641	rv = (int) ((100.0f * ((float) a) / ((float) b)) + 0.5f);
652		642
653	if (rv < 0)	643	if (rv < 0)
654	return 0;	644	return 0;
655	else if (rv > 100)	645	else if (rv > 100)
656	return 100;	646	return 100;
657		647
658	return rv;	648	return rv;
659	}	649	}
660		650
661	/* show_skills() - Meant to allow players to examine	651	/* show_skills() - Meant to allow players to examine
662	* their current skill list.	652	* their current skill list.
…		…
666	* Note this function is a bit more complicated becauase we	656	* Note this function is a bit more complicated becauase we
667	* we want ot sort the skills before printing them. If we	657	* we want ot sort the skills before printing them. If we
668	* just dumped this as we found it, this would be a bit	658	* just dumped this as we found it, this would be a bit
669	* simpler.	659	* simpler.
670	*/	660	*/
671		661	//TODO: egad, do it in perl, do not suffer from the big buffer on stack, make it one single drawinfo.
		662	void
672	void show_skills(object *op, const char* search) {	663	show_skills (object *op, const char *search)
		664	{
673	object *tmp=NULL;	665	object *tmp = NULL;
674	char buf[MAX_BUF];	666	char buf[MAX_BUF];
675	const char *cp;	667	const char *cp;
676	int i,num_skills_found=0;	668	int i, num_skills_found = 0;
677	static const char *const periods = "........................................";	669	static const char *const periods = "........................................";
		670
678	/* Need to have a pointer and use strdup for qsort to work properly */	671	/* Need to have a pointer and use strdup for qsort to work properly */
679	char skills[NUM_SKILLS][MAX_BUF];	672	char skills[NUM_SKILLS][MAX_BUF];
680		673
681
682	for (tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	674	for (tmp = op->inv; tmp != NULL; tmp = tmp->below)
		675	{
683	if (tmp->type == SKILL) {	676	if (tmp->type == SKILL)
		677	{
684	if ( search && strstr(tmp->name,search)==NULL ) continue;	678	if (search && strstr (tmp->name, search) == NULL)
		679	continue;
685	/* Basically want to fill this out to 40 spaces with periods */	680	/* Basically want to fill this out to 40 spaces with periods */
686	sprintf(buf,"%s%s", tmp->name, periods);	681	sprintf (buf, "%s%s", &tmp->name, periods);
687	buf[40] = 0;	682	buf[40] = 0;
688		683
689	if (settings.permanent_exp_ratio) {	684	if (settings.permanent_exp_ratio)
690	#ifdef WIN32
691	sprintf(skills[num_skills_found++],"%slvl:%3d (xp:%I64d/%I64d/%d%%)",	685	sprintf (skills[num_skills_found++], "%slvl:%3d (xp:%" PRId64 "/%" PRId64 "/%d%%)",
692	buf,tmp->level,	686	buf, tmp->level, tmp->stats.exp,
693	tmp->stats.exp,	687	level_exp (tmp->level + 1, op->expmul), clipped_percent (tmp->perm_exp, tmp->stats.exp));
694	level_exp(tmp->level+1, op->expmul),	688	else
695	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 {
704	#ifdef WIN32
705	sprintf(skills[num_skills_found++], "%slvl:%3d (xp:%I64d/%I64d)",	689	sprintf (skills[num_skills_found++], "%slvl:%3d (xp:%" PRId64 "/%" PRId64 ")",
706	buf,tmp->level,	690	buf, tmp->level, tmp->stats.exp, level_exp (tmp->level + 1, op->expmul));
707	tmp->stats.exp,	691
708	level_exp(tmp->level+1, op->expmul));
709	#else
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	692	/* I don't know why some characters get a bunch of skills, but
717	* it sometimes happens (maybe a leftover from bugier earlier code	693	* it sometimes happens (maybe a leftover from bugier earlier code
718	* and those character are still about). In any case, lets handle	694	* and those character are still about). In any case, lets handle
719	* it so it doesn't crash the server - otherwise, one character may	695	* it so it doesn't crash the server - otherwise, one character may
720	* crash the server numerous times.	696	* crash the server numerous times.
721	*/	697	*/
722	if (num_skills_found >= NUM_SKILLS) {	698	if (num_skills_found >= NUM_SKILLS)
		699	{
723	new_draw_info(NDI_RED, 0, op, "Your character has too many skills.");	700	new_draw_info (NDI_RED, 0, op, "Your character has too many skills.");
724	new_draw_info(NDI_RED, 0, op, "Something isn't right - contact the server admin");	701	new_draw_info (NDI_RED, 0, op, "Something isn't right - contact the server admin");
725	break;	702	break;
		703	}
		704	}
726	}	705	}
727	}
728	}
729		706
730	clear_win_info(op);
731	new_draw_info(NDI_UNIQUE, 0,op,"Player skills:");	707	new_draw_info (NDI_UNIQUE, 0, op, "Player skills:");
		708	if (num_skills_found > 1)
732	if (num_skills_found > 1) qsort(skills, num_skills_found, MAX_BUF, (int (*)(const void*, const void*))strcmp);	709	qsort (skills, num_skills_found, MAX_BUF, (int (*)(const void *, const void *)) std::strcmp);
733		710
734	for (i=0; i<num_skills_found; i++) {	711	for (i = 0; i < num_skills_found; i++)
735	new_draw_info(NDI_UNIQUE, 0, op, skills[i]);	712	new_draw_info (NDI_UNIQUE, 0, op, skills[i]);
736	}
737		713
738	new_draw_info_format(NDI_UNIQUE, 0, op,	714	new_draw_info_format (NDI_UNIQUE, 0, op, "You can handle %d weapon improvements.", op->level / 5 + 5);
739	"You can handle %d weapon improvements.",op->level/5+5);
740		715
741	cp = determine_god(op);	716	cp = determine_god (op);
742	new_draw_info_format(NDI_UNIQUE, 0, op,	717	new_draw_info_format (NDI_UNIQUE, 0, op, "You worship %s.", cp ? cp : "no god at current time");
743	"You worship %s.", cp?cp:"no god at current time");
744		718
745	new_draw_info_format(NDI_UNIQUE,0,op, "Your equipped item power is %d out of %d\n",	719	new_draw_info_format (NDI_UNIQUE, 0, op, "Your equipped item power is %d out of %d\n",
746	op->contr->item_power, (int) (op->level * settings.item_power_factor));	720	op->contr->item_power, (int) (op->level * settings.item_power_factor));
747	}	721	}
748		722
749	/* use_skill() - similar to invoke command, it executes the skill in the	723	/* 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	724	* 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.	725	* 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	726	* 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.	727	* our own find_skill_by_name so we can try to do better string matching.
754	*/	728	*/
755		729	int
756	int use_skill(object *op, const char *string) {	730	use_skill (object *op, const char *string)
		731	{
757	object *skop;	732	object *skop;
758	size_t len;	733	size_t len;
759		734
760	if (!string) return 0;	735	if (!string)
		736	return 0;
761		737
762	for (skop = op->inv; skop != NULL; skop=skop->below) {	738	for (skop = op->inv; skop; skop = skop->below)
763	if (skop->type == SKILL && QUERY_FLAG(skop, FLAG_CAN_USE_SKILL) &&	739	{
		740	if (skop->type == SKILL
		741	&& QUERY_FLAG (skop, FLAG_CAN_USE_SKILL)
764	!strncasecmp(string, skop->skill, MIN(strlen(string), strlen(skop->skill))))	742	&& !strncasecmp (string, skop->skill, MIN (strlen (string), (size_t) strlen (skop->skill))))
765	break;	743	break;
766	else if (skop->type == SKILL_TOOL &&	744	else if (skop->type == SKILL_TOOL
767	!strncasecmp(string, skop->skill, MIN(strlen(string), strlen(skop->skill))))	745	&& !strncasecmp (string, skop->skill, MIN (strlen (string), (size_t) strlen (skop->skill))))
768	break;	746	break;
769	}	747	}
		748
770	if (!skop) {	749	if (!skop)
771	new_draw_info_format(NDI_UNIQUE, 0, op,
772	"Unable to find skill %s", string);
773	return 0;
774	}	750	{
		751	new_draw_info_format (NDI_UNIQUE, 0, op, "Unable to find skill %s", string);
		752	return 0;
		753	}
775		754
776	len=strlen(skop->skill);	755	len = strlen (skop->skill);
777		756
778	/* All this logic goes and skips over the skill name to find any	757	/* All this logic goes and skips over the skill name to find any
779	* options given to the skill. Its pretty simple - if there	758	* options given to the skill. Its pretty simple - if there
780	* are extra parameters (as deteremined by string length), we	759	* are extra parameters (as deteremined by string length), we
781	* want to skip over any leading spaces.	760	* want to skip over any leading spaces.
782	*/	761	*/
783	if(len>=strlen(string)) {	762	if (len >= strlen (string))
784	string=NULL;	763	string = NULL;
785	} else {	764	else
786	string += len;
787	while(*string==0x20) string++;
788	if(strlen(string)==0) string = NULL;
789	}	765	{
		766	string += len;
		767	while (*string == 0x20)
		768	string++;
		769
		770	if (strlen (string) == 0)
		771	string = NULL;
790		772	}
		773
791	#ifdef SKILL_UTIL_DEBUG	774	#ifdef SKILL_UTIL_DEBUG
792	LOG(llevDebug,"use_skill() got skill: %s\n",sknum>-1?skills[sknum].name:"none");	775	LOG (llevDebug, "use_skill() got skill: %s\n", sknum > -1 ? skills[sknum].name : "none");
793	#endif	776	#endif
794		777
795	/* Change to the new skill, then execute it. */
796	if(do_skill(op,op,skop, op->facing,string)) return 1;	778	if (do_skill (op, op, skop, op->facing, string))
797
798	return 0;	779	return 1;
799	}
800		780
		781	return 0;
		782	}
801		783
		784	static bool
		785	hth_skill_p (object *skill)
		786	{
		787	return (skill_flags [skill->subtype] & (SF_COMBAT | SF_NEED_WEAPON)) == SF_COMBAT;
		788	}
802		789
803	/* This finds the best unarmed skill the player has, and returns	790	/* 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	*/	791	*/
		792	static object *
817	static object *find_best_player_hth_skill(object *op)	793	find_player_hth_skill (object *op)
818	{	794	{
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) {	795	for (object *tmp = op->inv; tmp; tmp = tmp->below)
823	if (tmp->type == SKILL) {	796	if (tmp->type == SKILL && QUERY_FLAG (tmp, FLAG_CAN_USE_SKILL) && hth_skill_p (tmp))
824	if (dragon && tmp->subtype == SK_CLAWING) return tmp;	797	return tmp;
825		798
826	/* The order in the array is preferred order. So basically,	799	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	}	800	}
845		801
846	/* do_skill_attack() - We have got an appropriate opponent from either	802	/* 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	803	* 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.	804	* attacking, take care of messages from the attack and changes in invisible.
…		…
850	* tmp is the targetted monster.	806	* tmp is the targetted monster.
851	* op is what is attacking	807	* op is what is attacking
852	* string is passed along to describe what messages to describe	808	* string is passed along to describe what messages to describe
853	* the damage.	809	* the damage.
854	*/	810	*/
855		811	static int
856	static int do_skill_attack(object *tmp, object *op, const char *string, object *skill) {	812	do_skill_attack (object *tmp, object *op, const char *string, object *skill)
857	int success;	813	{
		814	if (INVOKE_OBJECT (SKILL_ATTACK, op, ARG_OBJECT (tmp), ARG_STRING (string), ARG_OBJECT (skill)))
		815	return RESULT_INT (0);
858		816
859	/* For Players only: if there is no ready weapon, and no "attack" skill	817	/* 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.	818	* 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,	819	* 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	820	* 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.	821	* through that code if skill is set to change to the skill.
864	*/	822	*/
865	if(op->type==PLAYER) {	823	if (player *pl = op->contr)
		824	{
		825	if (!pl->combat_ob)
		826	{
866	if (!QUERY_FLAG(op,FLAG_READY_WEAPON)) {	827	if (QUERY_FLAG (op, FLAG_READY_WEAPON))
867	size_t i;	828	{
		829	for (tmp = op->inv; tmp; tmp = tmp->below)
		830	if (tmp->type == WEAPON && QUERY_FLAG (tmp, FLAG_APPLIED))
		831	break;
868		832
869	if (!skill) {	833	if (!tmp)
		834	LOG (llevError, "Could not find applied weapon on %s\n", &op->name);
		835
		836	pl->combat_ob = tmp;
		837	}
		838
		839	if (!pl->combat_ob)
		840	{
		841	if (!skill)
		842	{
870	/* See if the players chosen skill is a combat skill, and use	843	/* See if the players chosen skill is a combat skill, and use
871	* it if appropriate.	844	* it if appropriate.
872	*/	845	*/
873	if (op->chosen_skill) {	846	if (op->chosen_skill && hth_skill_p (op->chosen_skill))
874	for (i=0; i<sizeof(unarmed_skills); i++)
875	if (op->chosen_skill->subtype == unarmed_skills[i]) {
876	skill = op->chosen_skill;	847	skill = op->chosen_skill;
877	break;	848	else
878	}	849	{
879	}
880	/* If we didn't find a skill above, look harder for a good skill */
881	if (!skill) {
882	skill = find_best_player_hth_skill(op);	850	skill = find_player_hth_skill (op);
883		851
884	if (!skill) {	852	if (!skill)
885	new_draw_info(NDI_BLACK, 0, op, "You have no unarmed combat skills!");	853	new_draw_info (NDI_BLACK, 0, op, "You have no unarmed combat skills!");
886	return 0;	854	}
887	}	855	}
888	}	856
889	}	857	if (skill)
890	if (skill != op->chosen_skill) {	858	{
891	/* now try to ready the new skill */	859	op->change_skill (0);
892	if(!change_skill(op,skill,0)) { /* oh oh, trouble! */	860	apply_special (op, skill, AP_APPLY);
893	new_draw_info_format(NDI_UNIQUE, 0, tmp, "Couldn't change to skill %s", skill->name);	861	}
		862	}
		863
		864	if (!pl->combat_ob)
		865	{
		866	LOG (llevError, "Could not find anything to attack on %s\n", &op->name);
		867	return 0;
		868	}
		869	}
		870
		871	if (!op->change_weapon (pl->combat_ob))
894	return 0;	872	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		873
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	}
925	}
926
927	/* lose invisiblity/hiding status for running attacks */	874	/* lose invisiblity/hiding status for running attacks */
928		875	if (pl->tmp_invis)
929	if(op->type==PLAYER && op->contr->tmp_invis) {	876	{
930	op->contr->tmp_invis=0;	877	pl->tmp_invis = 0;
931	op->invisible=0;	878	op->invisible = 0;
932	op->hide=0;	879	op->hide = 0;
933	update_object(op,UP_OBJ_FACE);	880	update_object (op, UP_OBJ_CHANGE);
		881	}
934	}	882	}
935		883
936	success = attack_ob(tmp,op);	884	int success = attack_ob (tmp, op);
937		885
938	/* print appropriate messages to the player */	886	/* print appropriate messages to the player */
939		887
940	if(success && string!=NULL && tmp && !QUERY_FLAG(tmp,FLAG_FREED)) {	888	if (success && string && tmp && !QUERY_FLAG (tmp, FLAG_FREED))
		889	{
941	if(op->type==PLAYER)	890	if (op->type == PLAYER)
942	new_draw_info_format(NDI_UNIQUE, 0,op,	891	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)	892	else if (tmp->type == PLAYER)
945	new_draw_info_format(NDI_UNIQUE, 0,tmp,	893	new_draw_info_format (NDI_UNIQUE, 0, tmp, "%s %s you!", query_name (op), string);
946	"%s %s you!",query_name(op),string);
947	}	894	}
		895
948	return success;	896	return success;
949	}	897	}
950
951		898
952	/* skill_attack() - Core routine for use when we attack using a skills	899	/* skill_attack() - Core routine for use when we attack using a skills
953	* system. In essence, this code handles	900	* system. In essence, this code handles
954	* all skill-based attacks, ie hth, missile and melee weapons should be	901	* all skill-based attacks, ie hth, missile and melee weapons should be
955	* treated here. If an opponent is already supplied by move_player(),	902	* treated here. If an opponent is already supplied by move_player(),
…		…
958	*	905	*
959	* This is called by move_player() and attack_hth()	906	* This is called by move_player() and attack_hth()
960	*	907	*
961	* Initial implementation by -bt thomas@astro.psu.edu	908	* Initial implementation by -bt thomas@astro.psu.edu
962	*/	909	*/
963		910	int
964	int skill_attack (object *tmp, object *pl, int dir, const char *string, object *skill) {	911	skill_attack (object *tmp, object *pl, int dir, const char *string, object *skill)
		912	{
965	sint16 tx,ty;	913	sint16 tx, ty;
966	mapstruct *m;	914	maptile *m;
967	int mflags;	915	int mflags;
968		916
		917	if (!dir)
969	if(!dir) dir=pl->facing;	918	dir = pl->facing;
		919
970	tx=freearr_x[dir];	920	tx = freearr_x[dir];
971	ty=freearr_y[dir];	921	ty = freearr_y[dir];
972		922
973	/* If we don't yet have an opponent, find if one exists, and attack.	923	/* 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()	924	* Legal opponents are the same as outlined in move_player_attack()
975	*/	925	*/
976		926	if (!tmp)
977	if(tmp==NULL) {	927	{
978	m = pl->map;	928	m = pl->map;
979	tx = pl->x + freearr_x[dir];	929	tx = pl->x + freearr_x[dir];
980	ty = pl->y + freearr_y[dir];	930	ty = pl->y + freearr_y[dir];
981		931
982	mflags = get_map_flags(m, &m, tx, ty, &tx, &ty);	932	mflags = get_map_flags (m, &m, tx, ty, &tx, &ty);
983	if (mflags & P_OUT_OF_MAP) return 0;	933	if (mflags & P_OUT_OF_MAP)
		934	return 0;
984		935
985	/* space must be blocked for there to be anything interesting to do */	936	/* 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;	937	if (!OB_TYPE_MOVE_BLOCK (pl, GET_MAP_MOVE_BLOCK (m, tx, ty)))
		938	return 0;
987		939
988	for(tmp=get_map_ob(m, tx, ty); tmp; tmp=tmp->above)	940	for (tmp = GET_MAP_OB (m, tx, ty); tmp; tmp = tmp->above)
989	if((QUERY_FLAG(tmp,FLAG_ALIVE) && tmp->stats.hp>=0)	941	if ((QUERY_FLAG (tmp, FLAG_ALIVE) && tmp->stats.hp >= 0) || QUERY_FLAG (tmp, FLAG_CAN_ROLL) || tmp->type == LOCKED_DOOR)
990	|| QUERY_FLAG(tmp, FLAG_CAN_ROLL)	942	{
991	|| tmp->type==LOCKED_DOOR ) {
992	/* Don't attack party members */	943	/* Don't attack party members */
993	if((pl->type==PLAYER && tmp->type==PLAYER) && (pl->contr->party!=NULL	944	if ((pl->type == PLAYER && tmp->type == PLAYER) && (pl->contr->party != NULL && pl->contr->party == tmp->contr->party))
994	&& pl->contr->party==tmp->contr->party))	945	return 0;
995	return 0;	946
996	break;	947	break;
		948	}
997	}	949	}
998	}	950
999	if (!tmp) {	951	if (!tmp)
		952	{
1000	if(pl->type==PLAYER)	953	if (pl->type == PLAYER)
1001	new_draw_info(NDI_UNIQUE, 0,pl,"There is nothing to attack!");	954	new_draw_info (NDI_UNIQUE, 0, pl, "There is nothing to attack!");
1002	return 0;
1003	}
1004		955
		956	return 0;
		957	}
		958
1005	return do_skill_attack(tmp,pl,string, skill);	959	return do_skill_attack (tmp, pl, string, skill);
1006	}	960	}
1007
1008		961
1009	/* attack_hth() - this handles all hand-to-hand attacks -b.t. */	962	/* attack_hth() - this handles all hand-to-hand attacks -b.t. */
		963
1010	/* July 5, 1995 - I broke up attack_hth() into 2 parts. In the first	964	/* 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	965	* (attack_hth) we check for weapon use, etc in the second (the new
1012	* function skill_attack() we actually attack.	966	* function skill_attack() we actually attack.
1013	*/	967	*/
1014		968	static int
1015	static int attack_hth(object *pl, int dir, const char *string, object *skill) {	969	attack_hth (object *pl, int dir, const char *string, object *skill)
		970	{
1016	object *enemy=NULL,*weapon;	971	object *enemy = NULL, *weapon;
1017		972
1018	if(QUERY_FLAG(pl, FLAG_READY_WEAPON))	973	if (QUERY_FLAG (pl, FLAG_READY_WEAPON))
1019	for(weapon=pl->inv;weapon;weapon=weapon->below) {	974	for (weapon = pl->inv; weapon; weapon = weapon->below)
		975	{
1020	if (weapon->type==WEAPON && QUERY_FLAG(weapon, FLAG_APPLIED)) {	976	if (weapon->type == WEAPON && QUERY_FLAG (weapon, FLAG_APPLIED))
		977	{
1021	CLEAR_FLAG(weapon,FLAG_APPLIED);	978	CLEAR_FLAG (weapon, FLAG_APPLIED);
1022	CLEAR_FLAG(pl,FLAG_READY_WEAPON);	979	CLEAR_FLAG (pl, FLAG_READY_WEAPON);
1023	fix_player(pl);	980	pl->update_stats ();
1024	if(pl->type==PLAYER) {	981	if (pl->type == PLAYER)
		982	{
1025	new_draw_info(NDI_UNIQUE, 0,pl,"You unwield your weapon in order to attack.");	983	new_draw_info (NDI_UNIQUE, 0, pl, "You unwield your weapon in order to attack.");
1026	esrv_update_item(UPD_FLAGS, pl, weapon);	984	esrv_update_item (UPD_FLAGS, pl, weapon);
1027	}	985	}
1028	break;	986
		987	break;
		988	}
1029	}	989	}
1030	}	990
1031	return skill_attack(enemy,pl,dir,string, skill);	991	return skill_attack (enemy, pl, dir, string, skill);
1032	}	992	}
1033
1034		993
1035	/* attack_melee_weapon() - this handles melee weapon attacks -b.t.	994	/* 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.	995	* 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	996	* But there is a real neato possible feature of this scheme which
1038	* bears mentioning:	997	* bears mentioning:
1039	* Since we are only calling this from do_skill() in the future	998	* Since we are only calling this from do_skill() in the future
1040	* we may make this routine handle 'special' melee weapons attacks	999	* we may make this routine handle 'special' melee weapons attacks
1041	* (like disarming manuever with sai) based on player SK_level and	1000	* (like disarming manuever with sai) based on player SK_level and
1042	* weapon type.	1001	* weapon type.
1043	*/	1002	*/
1044		1003	static int
1045	static int attack_melee_weapon(object *op, int dir, const char *string, object *skill) {	1004	attack_melee_weapon (object *op, int dir, const char *string, object *skill)
		1005	{
1046		1006
1047	if(!QUERY_FLAG(op, FLAG_READY_WEAPON)) {	1007	if (!QUERY_FLAG (op, FLAG_READY_WEAPON))
		1008	{
1048	if(op->type==PLAYER)	1009	if (op->type == PLAYER)
1049	new_draw_info(NDI_UNIQUE, 0,op,"You have no ready weapon to attack with!");	1010	new_draw_info (NDI_UNIQUE, 0, op, "You have no ready weapon to attack with!");
1050	return 0;	1011
		1012	return 0;
1051	}	1013	}
		1014
1052	return skill_attack(NULL,op,dir,string, skill);	1015	return skill_attack (NULL, op, dir, string, skill);
1053
1054	}	1016	}
		1017

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