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/cvs/deliantra/server/server/skill_util.C

Comparing deliantra/server/server/skill_util.C (file contents):
Revision 1.1 by elmex, Sun Aug 13 17:16:04 2006 UTC vs.
Revision 1.65 by root, Mon Sep 22 05:45:55 2008 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 1.1 2006/08/13 17:16:04 elmex Exp $";	3	*
4	*/	4	* Copyright (©) 2005,2006,2007,2008 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 (©) 2002,2007 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	* Deliantra 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		21	* The authors can be reached via e-mail to <support@deliantra.net>
25	The author can be reached via e-mail to crossfire-devel@real-time.com
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, ev=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	// elmex: do a special case here. most times we only want to capture player skills?	276	// skill, by_whom, on_which_object, which direction, skill_argument
311	if (op->type==PLAYER)	277	if (INVOKE_OBJECT (USE_SKILL, skill, ARG_OBJECT (op), ARG_OBJECT (part), ARG_INT (dir), ARG_STRING (string)))
312	ev = execute_global_event(EVENT_PLAYER_USE_SKILL, op, part, skill, dir, string);
313	else
314	ev = execute_global_event(EVENT_MONSTER_USE_SKILL, op, part, skill, dir, string);
315
316	if (ev)
317	return 0;	278	return 0;
318		279
319	switch(skill->subtype) {	280	switch (skill->subtype)
		281	{
320	case SK_LEVITATION:	282	case SK_LEVITATION:
321	/* Not 100% sure if this will work with new movement code -	283	/* Not 100% sure if this will work with new movement code -
322	* the levitation skill has move_type for flying, so when	284	* the levitation skill has move_type for flying, so when
323	* equipped, that should transfer to player, when not,	285	* equipped, that should transfer to player, when not,
324	* shouldn't.	286	* shouldn't.
325	*/	287	*/
326	if(QUERY_FLAG(skill,FLAG_APPLIED)) {	288	if (QUERY_FLAG (skill, FLAG_APPLIED))
		289	{
327	CLEAR_FLAG(skill,FLAG_APPLIED);	290	CLEAR_FLAG (skill, FLAG_APPLIED);
328	new_draw_info(NDI_UNIQUE,0,op,"You come to earth.");	291	new_draw_info (NDI_UNIQUE, 0, op, "You come to earth.");
329	}	292	}
330	else {	293	else
		294	{
331	SET_FLAG(skill,FLAG_APPLIED);	295	SET_FLAG (skill, FLAG_APPLIED);
332	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!");
333	}	297	}
334	fix_player(op);	298
		299	op->update_stats ();
335	success=1;	300	success = 1;
336	break;	301	break;
337		302
338	case SK_STEALING:	303	case SK_STEALING:
339	exp = success = steal(op, dir, skill);	304	exp = success = steal (op, dir, skill);
340	break;	305	break;
341		306
342	case SK_LOCKPICKING:	307	case SK_LOCKPICKING:
343	exp = success = pick_lock(op, dir, skill);	308	exp = success = pick_lock (op, dir, skill);
344	break;	309	break;
345		310
346	case SK_HIDING:	311	case SK_HIDING:
347	exp = success = hide(op, skill);	312	exp = success = hide (op, skill);
348	break;	313	break;
349		314
350	case SK_JUMPING:	315	case SK_JUMPING:
351	success = jump(op, dir, skill);	316	exp = success = jump (op, dir, skill);
352	break;	317	break;
353		318
354	case SK_INSCRIPTION:	319	case SK_INSCRIPTION:
355	exp = success = write_on_item(op,string, skill);	320	exp = success = write_on_item (op, string, skill);
356	break;	321	break;
357		322
358	case SK_MEDITATION:	323	case SK_MEDITATION:
359	meditate(op, skill);	324	meditate (op, skill);
360	success=1;	325	success = 1;
361	break;	326	break;
362	/* note that the following 'attack' skills gain exp through hit_player() */	327	/* note that the following 'attack' skills gain exp through hit_player() */
363		328
364	case SK_KARATE:	329	case SK_KARATE:
365	(void) attack_hth(op,dir,"karate-chopped", skill);	330	attack_hth (op, dir, "karate-chopped", skill);
366	break;	331	break;
367		332
368	case SK_PUNCHING:	333	case SK_PUNCHING:
369	(void) attack_hth(op,dir,"punched", skill);	334	attack_hth (op, dir, "punched", skill);
370	break;	335	break;
371		336
372	case SK_FLAME_TOUCH:	337	case SK_FLAME_TOUCH:
373	(void) attack_hth(op,dir,"flamed", skill);	338	attack_hth (op, dir, "flamed", skill);
374	break;	339	break;
375		340
376	case SK_SPARK_TOUCH:	341	case SK_SPARK_TOUCH:
377	(void) attack_hth(op,dir,"zapped", skill);	342	attack_hth (op, dir, "zapped", skill);
378	break;	343	break;
379		344
380	case SK_SHIVER:	345	case SK_SHIVER:
381	(void) attack_hth(op,dir,"froze", skill);	346	attack_hth (op, dir, "froze", skill);
382	break;	347	break;
383		348
384	case SK_ACID_SPLASH:	349	case SK_ACID_SPLASH:
385	(void) attack_hth(op,dir,"dissolved", skill);	350	attack_hth (op, dir, "dissolved", skill);
386	break;	351	break;
387		352
388	case SK_POISON_NAIL:	353	case SK_POISON_NAIL:
389	(void) attack_hth(op,dir,"injected poison into", skill);	354	attack_hth (op, dir, "injected poison into", skill);
390	break;	355	break;
391		356
392	case SK_CLAWING:	357	case SK_CLAWING:
393	(void) attack_hth(op,dir,"clawed", skill);	358	attack_hth (op, dir, "clawed", skill);
394	break;	359	break;
395		360
396	case SK_ONE_HANDED_WEAPON:	361	case SK_ONE_HANDED_WEAPON:
397	case SK_TWO_HANDED_WEAPON:	362	case SK_TWO_HANDED_WEAPON:
398	(void) attack_melee_weapon(op,dir,NULL, skill);	363	attack_melee_weapon (op, dir, NULL, skill);
399	break;	364	break;
400		365
401	case SK_FIND_TRAPS:	366	case SK_FIND_TRAPS:
402	exp = success = find_traps(op, skill);	367	exp = success = find_traps (op, skill);
403	break;	368	break;
404		369
405	case SK_SINGING:	370	case SK_SINGING:
406	exp = success = singing(op,dir, skill);	371	exp = success = singing (op, dir, skill);
407	break;	372	break;
408		373
409	case SK_ORATORY:	374	case SK_ORATORY:
410	exp = success = use_oratory(op,dir, skill);	375	exp = success = use_oratory (op, dir, skill);
411	break;	376	break;
412		377
413	case SK_SMITHERY:	378	case SK_SMITHERY:
414	case SK_BOWYER:	379	case SK_BOWYER:
415	case SK_JEWELER:	380	case SK_JEWELER:
416	case SK_ALCHEMY:	381	case SK_ALCHEMY:
417	case SK_THAUMATURGY:	382	case SK_THAUMATURGY:
418	case SK_LITERACY:	383	case SK_LITERACY:
419	case SK_WOODSMAN:	384	case SK_WOODSMAN:
420	/* 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.
421	* failing that, we go and identify stuff.	386	* failing that, we go and identify stuff.
422	*/	387	*/
423	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)
424	next=tmp->above;	389	{
		390	next = tmp->above;
		391
425	if(QUERY_FLAG(tmp, FLAG_IS_CAULDRON)) {	392	if (QUERY_FLAG (tmp, FLAG_IS_CAULDRON))
		393	{
426	attempt_do_alchemy(op, tmp);	394	attempt_do_alchemy (op, tmp);
		395
427	if (QUERY_FLAG(tmp, FLAG_APPLIED))	396	if (QUERY_FLAG (tmp, FLAG_APPLIED))
428	esrv_send_inventory(op, tmp);	397	esrv_send_inventory (op, tmp);
429	did_alc=1;	398
430	}	399	did_alc = 1;
431	}	400	}
		401	}
		402
432	if (did_alc == 0)	403	if (did_alc == 0)
433	exp = success = skill_ident(op,skill);	404	exp = success = skill_ident (op, skill);
		405
434	break;	406	break;
435		407
436	case SK_DET_MAGIC:	408	case SK_DET_MAGIC:
437	case SK_DET_CURSE:	409	case SK_DET_CURSE:
438	exp = success = skill_ident(op,skill);	410	exp = success = skill_ident (op, skill);
439	break;	411	break;
440		412
441	case SK_DISARM_TRAPS:	413	case SK_DISARM_TRAPS:
442	exp = success = remove_trap(op,dir, skill);	414	exp = success = remove_trap (op, dir, skill);
443	break;	415	break;
444		416
445	case SK_THROWING:	417	case SK_THROWING:
446	success = skill_throw(op,part,dir,string, skill);	418	success = skill_throw (op, part, dir, string, skill);
447	break;	419	break;
448		420
449	case SK_SET_TRAP:	421	case SK_SET_TRAP:
450	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.");
451	break;	423	break;
452		424
453	case SK_USE_MAGIC_ITEM:	425	case SK_USE_MAGIC_ITEM:
454	case SK_MISSILE_WEAPON:	426	case SK_MISSILE_WEAPON:
455	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.");
456	break;	428	break;
457		429
458	case SK_PRAYING:	430	case SK_PRAYING:
459	success = pray(op, skill);	431	success = pray (op, skill);
460	break;	432	break;
461		433
462	case SK_BARGAINING:	434	case SK_BARGAINING:
463	success = describe_shop(op);	435	success = describe_shop (op);
464	break;	436	break;
465		437
466	case SK_SORCERY:	438	case SK_SORCERY:
467	case SK_EVOCATION:	439	case SK_EVOCATION:
468	case SK_PYROMANCY:	440	case SK_PYROMANCY:
469	case SK_SUMMONING:	441	case SK_SUMMONING:
470	case SK_CLIMBING:	442	case SK_CLIMBING:
471	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.");
472	break;	444	break;
473		445
474	default:	446	default:
475	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);
476	,query_name(op), op->chosen_skill->stats.sp);
477	break;	448	break;
478	}	449	}
479		450
480	/* 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.
481	* 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
482	* which use_monster_skill is called already simulates this.	453	* which use_monster_skill is called already simulates this.
483	* If certain skills should take more/less time, that should be	454	* If certain skills should take more/less time, that should be
484	* in the code for the skill itself.	455	* in the code for the skill itself.
485	*/	456	*/
486		457	if (op->type == PLAYER)
487	if(op->type==PLAYER) op->speed_left -= 1.0;	458	op->speed_left -= 1.f;
488		459
489	/* this is a good place to add experience for successfull use of skills.	460	/* this is a good place to add experience for successfull use of skills.
490	* Note that add_exp() will figure out player/monster experience	461	* Note that add_exp() will figure out player/monster experience
491	* gain problems.	462	* gain problems.
492	*/	463	*/
493		464
		465	if (success && exp)
494	if(success && exp) change_exp(op,exp, skill->skill, 0);	466	change_exp (op, exp, skill->skill, 0);
495		467
496	return success;	468	return success;
497	}	469	}
498		470
499	/* calc_skill_exp() - calculates amount of experience can be gained for	471	/* calc_skill_exp() - calculates amount of experience can be gained for
500	* successfull use of a skill. Returns value of experience gain.	472	* successfull use of a skill. Returns value of experience gain.
501	* Here we take the view that a player must 'overcome an opponent'	473	* Here we take the view that a player must 'overcome an opponent'
…		…
519	* op is the object that was 'defeated'.	491	* op is the object that was 'defeated'.
520	* skill is the skill used. If no skill is used, it should just	492	* skill is the skill used. If no skill is used, it should just
521	* point back to who.	493	* point back to who.
522	*	494	*
523	*/	495	*/
524		496	int
525	int calc_skill_exp(object *who, object *op, object *skill) {	497	calc_skill_exp (object *who, object *op, object *skill)
		498	{
526	int op_exp=0,op_lvl= 0;	499	int op_exp = 0, op_lvl = 0;
527	float base,value,lvl_mult=0.0;	500	float base, value, lvl_mult = 0.0;
528		501
529	if (!skill) skill = who;	502	if (!skill)
		503	skill = who;
530		504
531	/* Oct 95 - where we have an object, I expanded our treatment	505	/* Oct 95 - where we have an object, I expanded our treatment
532	* to 3 cases:	506	* to 3 cases:
533	* non-living magic obj, runes and everything else.	507	* non-living magic obj, runes and everything else.
534	*	508	*
535	* If an object is not alive and magical we set the base exp higher to	509	* If an object is not alive and magical we set the base exp higher to
536	* help out exp awards for skill_ident skills. Also, if	510	* help out exp awards for skill_ident skills. Also, if
537	* an item is type RUNE, we give out exp based on stats.Cha	511	* an item is type RUNE, we give out exp based on stats.Cha
538	* and level (this was the old system) -b.t.	512	* and level (this was the old system) -b.t.
539	*/	513	*/
540		514	if (!op)
541	if(!op) { /* no item/creature */	515	{ /* no item/creature */
542	op_lvl= who->map->difficulty < 1 ? 1: who->map->difficulty;	516	op_lvl = max (1, who->map->difficulty);
543	op_exp = 0;	517	op_exp = 0;
544	} else if(op->type==RUNE || op->type==TRAP) { /* all traps. If stats.Cha > 1 we use that	518	}
545	* for the amount of experience */	519	else if (op->type == RUNE || op->type == TRAP)
		520	{ /* all traps. If stats.Cha > 1 we use that
		521	* for the amount of experience */
546	op_exp = op->stats.Cha>1 ? op->stats.Cha : op->stats.exp;	522	op_exp = op->stats.Cha > 1 ? op->stats.Cha : op->stats.exp;
547	op_lvl = op->level;	523	op_lvl = op->level;
548	} else { /* all other items/living creatures */	524	}
		525	else
		526	{ /* all other items/living creatures */
549	op_exp = op->stats.exp;	527	op_exp = op->stats.exp;
550	op_lvl = op->level;	528	op_lvl = op->level;
551	if(!QUERY_FLAG(op,FLAG_ALIVE)) { /* for ident/make items */	529	if (!QUERY_FLAG (op, FLAG_ALIVE))
552	op_lvl += 5 * abs(op->magic);	530	op_lvl += 5 * abs (op->magic); /* for ident/make items */
553	}
554	}	531	}
555		532
556	if(op_lvl<1) op_lvl = 1;	533	if (op_lvl < 1)
		534	op_lvl = 1;
557		535
558	if(who->type!=PLAYER) { /* for monsters only */	536	if (who->type != PLAYER)
		537	{ /* for monsters only */
559	return ((int) (op_exp*0.1)+1); /* we add one to insure positive value is returned */	538	return ((int) (op_exp * 0.1) + 1); /* we add one to insure positive value is returned */
		539	}
		540	else
560	} else { /* for players */	541	{ /* for players */
561	base = op_exp;	542	base = op_exp;
562	/* if skill really is a skill, then we can look at the skill archetype for	543	/* if skill really is a skill, then we can look at the skill archetype for
563	* bse reward value (exp) and level multiplier factor.	544	* bse reward value (exp) and level multiplier factor.
564	*/	545	*/
565	if (skill->type == SKILL) {	546	if (skill->type == SKILL)
		547	{
566	base += skill->arch->clone.stats.exp;	548	base += skill->arch->stats.exp;
567	if (settings.simple_exp) {	549	if (settings.simple_exp)
568	if (skill->arch->clone.level)	550	{
		551	if (skill->arch->level)
569	lvl_mult = (float) skill->arch->clone.level / 100.0;	552	lvl_mult = (float) skill->arch->level / 100.0;
570	else	553	else
571	lvl_mult = 1.0; /* no adjustment */	554	lvl_mult = 1.0; /* no adjustment */
572	}	555	}
573	else {	556	else
574	if (skill->level)	557	{
		558	if (skill->level)
575	lvl_mult = ((float) skill->arch->clone.level * (float) op_lvl) / ((float) skill->level * 100.0);	559	lvl_mult = ((float) skill->arch->level * (float) op_lvl) / ((float) skill->level * 100.0);
576	else	560	else
577	lvl_mult = 1.0;	561	lvl_mult = 1.0;
578	}	562	}
579	} else {	563	}
		564	else
		565	{
580	/* Don't divide by zero here! */	566	/* Don't divide by zero here! */
581	lvl_mult = (float) op_lvl / (float) (skill->level?skill->level:1);	567	lvl_mult = (float) op_lvl / (float) max (1, skill->level);
582	}	568	}
583	}	569	}
584		570
585	/* assemble the exp total, and return value */	571	/* assemble the exp total, and return value */
586		572
587	value = base * lvl_mult;	573	value = base * lvl_mult;
		574	if (value < 1)
588	if (value < 1) value=1; /* Always give at least 1 exp point */	575	value = 1; /* Always give at least 1 exp point */
589		576
590	#ifdef SKILL_UTIL_DEBUG	577	#ifdef SKILL_UTIL_DEBUG
591	LOG(llevDebug,"calc_skill_exp(): who: %s(lvl:%d) op:%s(lvl:%d)\n",	578	LOG (llevDebug, "calc_skill_exp(): who: %s(lvl:%d) op:%s(lvl:%d)\n", who->name, skill->level, op->name, op_lvl);
592	who->name,skill->level,op->name,op_lvl);
593	#endif	579	#endif
594	return ( (int) value);	580	return ((int) value);
595	}	581	}
596		582
597	/* Learn skill. This inserts the requested skill in the player's	583	/* Learn skill. This inserts the requested skill in the player's
598	* inventory. The skill field of the scroll should have the	584	* inventory. The skill field of the scroll should have the
599	* exact name of the requested skill.	585	* exact name of the requested skill.
600	* This one actually teaches the player the skill as something	586	* This one actually teaches the player the skill as something
601	* they can equip.	587	* they can equip.
602	* Return 0 if the player knows the skill, 1 if the	588	* Return 0 if the player knows the skill, 1 if the
603	* player learns the skill, 2 otherwise.	589	* player learns the skill, 2 otherwise.
604	*/	590	*/
605
606	int	591	int
607	learn_skill (object *pl, object *scroll) {	592	learn_skill (object *pl, object *scroll)
608	object *tmp;	593	{
609
610	if (!scroll->skill) {	594	if (!scroll->skill)
		595	{
611	LOG(llevError,"skill scroll %s does not have skill pointer set.\n", scroll->name);	596	LOG (llevError, "skill scroll %s does not have skill pointer set.\n", &scroll->name);
612	return 2;	597	return 2;
613	}	598	}
614		599
615	/* can't use find_skill_by_name because we want skills the player knows	600	object *tmp = find_skill (pl, scroll->skill);
616	* but can't use natively.
617	*/
618		601
619	for (tmp=pl->inv; tmp!=NULL; tmp=tmp->below)
620	if (tmp->type == SKILL && !strncasecmp(scroll->skill, tmp->skill, strlen(scroll->skill))) break;
621
622	/* player already knows it */	602	/* player already knows it */
623	if (tmp && QUERY_FLAG(tmp, FLAG_CAN_USE_SKILL)) return 0;	603	if (tmp && QUERY_FLAG (tmp, FLAG_CAN_USE_SKILL))
		604	return 0;
624		605
625
626
627	/* now a random change to learn, based on player Int.	606	/* now a random change to learn, based on player Int.
628	* give bonus based on level - otherwise stupid characters	607	* give bonus based on level - otherwise stupid characters
629	* might never be able to learn anything.	608	* might never be able to learn anything.
630	*/	609	*/
631	if(random_roll(0, 99, pl, PREFER_LOW)>(learn_spell[pl->stats.Int] + (pl->level/5)))	610	if (random_roll (0, 99, pl, PREFER_LOW) > (learn_spell[pl->stats.Int] + (pl->level / 5)))
632	return 2; /* failure :< */	611	return 2; /* failure :< */
633		612
634	if (!tmp)	613	if (!tmp)
635	tmp = give_skill_by_name(pl, scroll->skill);	614	tmp = give_skill_by_name (pl, scroll->skill);
636		615
637	if (!tmp) {	616	if (!tmp)
		617	{
638	LOG(llevError,"skill scroll %s does not have valid skill name (%s).\n", scroll->name, scroll->skill);	618	LOG (llevError, "skill scroll %s does not have valid skill name (%s).\n", &scroll->name, &scroll->skill);
639	return 2;	619	return 2;
640	}	620	}
641		621
642	SET_FLAG(tmp, FLAG_CAN_USE_SKILL);	622	SET_FLAG (tmp, FLAG_CAN_USE_SKILL);
643	link_player_skills(pl);	623	link_player_skills (pl);
644	return 1;	624	return 1;
645	}	625	}
646		626
647	/* Gives a percentage clipped to 0% -> 100% of a/b. */	627	/* Gives a percentage clipped to 0% -> 100% of a/b. */
648	/* Probably belongs in some global utils-type file? */	628	/* Probably belongs in some global utils-type file? */
		629	static int
649	static int clipped_percent(sint64 a, sint64 b)	630	clipped_percent (sint64 a, sint64 b)
650	{	631	{
651	int rv;	632	int rv;
652		633
653	if (b <= 0)	634	if (b <= 0)
654	return 0;	635	return 0;
655		636
656	rv = (int)((100.0f * ((float)a) / ((float)b) ) + 0.5f);	637	rv = (int) ((100.0f * ((float) a) / ((float) b)) + 0.5f);
657		638
658	if (rv < 0)	639	if (rv < 0)
659	return 0;	640	return 0;
660	else if (rv > 100)	641	else if (rv > 100)
661	return 100;	642	return 100;
662		643
663	return rv;	644	return rv;
664	}	645	}
665		646
666	/* show_skills() - Meant to allow players to examine	647	/* show_skills() - Meant to allow players to examine
667	* their current skill list.	648	* their current skill list.
…		…
671	* Note this function is a bit more complicated becauase we	652	* Note this function is a bit more complicated becauase we
672	* we want ot sort the skills before printing them. If we	653	* we want ot sort the skills before printing them. If we
673	* just dumped this as we found it, this would be a bit	654	* just dumped this as we found it, this would be a bit
674	* simpler.	655	* simpler.
675	*/	656	*/
676		657	//TODO: egad, do it in perl, do not suffer from the big buffer on stack, make it one single drawinfo.
		658	void
677	void show_skills(object *op, const char* search) {	659	show_skills (object *op, const char *search)
678	object *tmp=NULL;	660	{
679	char buf[MAX_BUF];
680	const char *cp;	661	const char *cp;
681	int i,num_skills_found=0;	662	int i, num_skills_found = 0;
682	static const char *const periods = "........................................";	663	const char *const periods = ".............................."; // 30
		664
683	/* Need to have a pointer and use strdup for qsort to work properly */	665	/* Need to have a pointer and use strdup for qsort to work properly */
684	char skills[NUM_SKILLS][MAX_BUF];	666	char skills[NUM_SKILLS][128]; // d'oh
685		667
686
687	for (tmp=op->inv; tmp!=NULL; tmp=tmp->below) {	668	for (object *tmp = op->inv; tmp; tmp = tmp->below)
		669	{
688	if (tmp->type == SKILL) {	670	if (tmp->type == SKILL)
689	if ( search && strstr(tmp->name,search)==NULL ) continue;	671	{
		672	if (search && !strstr (tmp->name, search))
		673	continue;
		674
		675	char buf[30];
		676
690	/* Basically want to fill this out to 40 spaces with periods */	677	/* Basically want to fill this out to 30 spaces with periods */
691	sprintf(buf,"%s%s", tmp->name, periods);	678	snprintf (buf, sizeof (buf), "%s%s", &tmp->name, periods);
692	buf[40] = 0;
693		679
694	if (settings.permanent_exp_ratio) {	680	if (settings.permanent_exp_ratio)
695	#ifdef WIN32	681	snprintf (skills[num_skills_found++], sizeof (skills [0]), "%slvl:%3d (xp:%" PRId64 "/%" PRId64 "/%d%%)",
696	sprintf(skills[num_skills_found++],"%slvl:%3d (xp:%I64d/%I64d/%d%%)",	682	buf, tmp->level, tmp->stats.exp,
697	buf,tmp->level,	683	level_exp (tmp->level + 1, op->expmul), clipped_percent (tmp->perm_exp, tmp->stats.exp));
698	tmp->stats.exp,	684	else
699	level_exp(tmp->level+1, op->expmul),	685	snprintf (skills[num_skills_found++], sizeof (skills [0]), "%slvl:%3d (xp:%" PRId64 "/%" PRId64 ")",
700	clipped_percent(tmp->perm_exp,tmp->stats.exp));	686	buf, tmp->level, tmp->stats.exp, level_exp (tmp->level + 1, op->expmul));
701	#else	687
702	sprintf(skills[num_skills_found++],"%slvl:%3d (xp:%lld/%lld/%d%%)",
703	buf,tmp->level,
704	tmp->stats.exp,
705	level_exp(tmp->level+1, op->expmul),
706	clipped_percent(tmp->perm_exp,tmp->stats.exp));
707	#endif
708	} else {
709	#ifdef WIN32
710	sprintf(skills[num_skills_found++], "%slvl:%3d (xp:%I64d/%I64d)",
711	buf,tmp->level,
712	tmp->stats.exp,
713	level_exp(tmp->level+1, op->expmul));
714	#else
715	sprintf(skills[num_skills_found++], "%slvl:%3d (xp:%lld/%lld)",
716	buf,tmp->level,
717	tmp->stats.exp,
718	level_exp(tmp->level+1, op->expmul));
719	#endif
720	}
721	/* I don't know why some characters get a bunch of skills, but	688	/* I don't know why some characters get a bunch of skills, but
722	* it sometimes happens (maybe a leftover from bugier earlier code	689	* it sometimes happens (maybe a leftover from bugier earlier code
723	* and those character are still about). In any case, lets handle	690	* and those character are still about). In any case, lets handle
724	* it so it doesn't crash the server - otherwise, one character may	691	* it so it doesn't crash the server - otherwise, one character may
725	* crash the server numerous times.	692	* crash the server numerous times.
726	*/	693	*/
727	if (num_skills_found >= NUM_SKILLS) {	694	if (num_skills_found >= NUM_SKILLS)
		695	{
728	new_draw_info(NDI_RED, 0, op, "Your character has too many skills.");	696	new_draw_info (NDI_RED, 0, op, "Your character has too many skills.");
729	new_draw_info(NDI_RED, 0, op, "Something isn't right - contact the server admin");	697	new_draw_info (NDI_RED, 0, op, "Something isn't right - contact the server admin");
730	break;	698	break;
		699	}
		700	}
731	}	701	}
732	}
733	}
734		702
735	clear_win_info(op);	703	dynbuf_text msg (4096, 1024);
736	new_draw_info(NDI_UNIQUE, 0,op,"Player skills:");
737	if (num_skills_found > 1) qsort(skills, num_skills_found, MAX_BUF, (int (*)(const void*, const void*))strcmp);
738		704
		705	msg << "T<Player skills:>\n\n";
		706	if (num_skills_found > 1)
		707	qsort (skills, num_skills_found, sizeof (skills [0]), (int (*)(const void *, const void *)) std::strcmp);
		708
739	for (i=0; i<num_skills_found; i++) {	709	for (i = 0; i < num_skills_found; i++)
740	new_draw_info(NDI_UNIQUE, 0, op, skills[i]);	710	msg << " C<" << skills [i] << ">\n";
741	}
742		711
743	new_draw_info_format(NDI_UNIQUE, 0, op,	712	msg << "\nYou can handle " << op->level / 5 + 5 << " weapon improvements.\r";
744	"You can handle %d weapon improvements.",op->level/5+5);
745		713
746	cp = determine_god(op);	714	cp = determine_god (op);
747	new_draw_info_format(NDI_UNIQUE, 0, op,	715	msg << "You worship " << (cp ? cp : "no god at current time") << ".\r";
748	"You worship %s.", cp?cp:"no god at current time");
749		716
750	new_draw_info_format(NDI_UNIQUE,0,op, "Your equipped item power is %d out of %d\n",	717	msg << "Your equipped item power is " << (int)op->contr->item_power
751	op->contr->item_power, (int) (op->level * settings.item_power_factor));	718	<< " out of " << int (op->level * settings.item_power_factor)
		719	<< ".\n";
		720
		721	op->contr->infobox (MSG_CHANNEL ("skills"), msg);
752	}	722	}
753		723
754	/* use_skill() - similar to invoke command, it executes the skill in the	724	/* use_skill() - similar to invoke command, it executes the skill in the
755	* direction that the user is facing. Returns false if we are unable to	725	* direction that the user is facing. Returns false if we are unable to
756	* change to the requested skill, or were unable to use the skill properly.	726	* change to the requested skill, or were unable to use the skill properly.
757	* This is tricky because skills can have spaces. We basically roll	727	* This is tricky because skills can have spaces. We basically roll
758	* our own find_skill_by_name so we can try to do better string matching.	728	* our own find_skill_by_name so we can try to do better string matching.
759	*/	729	*/
760		730	int
761	int use_skill(object *op, const char *string) {	731	use_skill (object *op, const char *string)
		732	{
762	object *skop;	733	object *skop;
763	size_t len;	734	size_t len;
764		735
765	if (!string) return 0;	736	if (!string)
		737	return 0;
766		738
767	for (skop = op->inv; skop != NULL; skop=skop->below) {	739	for (skop = op->inv; skop; skop = skop->below)
768	if (skop->type == SKILL && QUERY_FLAG(skop, FLAG_CAN_USE_SKILL) &&	740	{
		741	if (skop->type == SKILL
		742	&& QUERY_FLAG (skop, FLAG_CAN_USE_SKILL)
769	!strncasecmp(string, skop->skill, MIN(strlen(string), strlen(skop->skill))))	743	&& !strncasecmp (string, skop->skill, MIN (strlen (string), (size_t) strlen (skop->skill))))
770	break;	744	break;
771	else if (skop->type == SKILL_TOOL &&	745	else if (skop->type == SKILL_TOOL
772	!strncasecmp(string, skop->skill, MIN(strlen(string), strlen(skop->skill))))	746	&& !strncasecmp (string, skop->skill, MIN (strlen (string), (size_t) strlen (skop->skill))))
773	break;	747	break;
774	}	748	}
		749
775	if (!skop) {	750	if (!skop)
776	new_draw_info_format(NDI_UNIQUE, 0, op,
777	"Unable to find skill %s", string);
778	return 0;
779	}	751	{
		752	new_draw_info_format (NDI_UNIQUE, 0, op, "Unable to find skill %s", string);
		753	return 0;
		754	}
780		755
781	len=strlen(skop->skill);	756	len = strlen (skop->skill);
782		757
783	/* All this logic goes and skips over the skill name to find any	758	/* All this logic goes and skips over the skill name to find any
784	* options given to the skill. Its pretty simple - if there	759	* options given to the skill. Its pretty simple - if there
785	* are extra parameters (as deteremined by string length), we	760	* are extra parameters (as deteremined by string length), we
786	* want to skip over any leading spaces.	761	* want to skip over any leading spaces.
787	*/	762	*/
788	if(len>=strlen(string)) {	763	if (len >= strlen (string))
789	string=NULL;	764	string = NULL;
790	} else {	765	else
791	string += len;
792	while(*string==0x20) string++;
793	if(strlen(string)==0) string = NULL;
794	}	766	{
		767	string += len;
		768	while (*string == 0x20)
		769	string++;
		770
		771	if (strlen (string) == 0)
		772	string = NULL;
795		773	}
		774
796	#ifdef SKILL_UTIL_DEBUG	775	#ifdef SKILL_UTIL_DEBUG
797	LOG(llevDebug,"use_skill() got skill: %s\n",sknum>-1?skills[sknum].name:"none");	776	LOG (llevDebug, "use_skill() got skill: %s\n", sknum > -1 ? skills[sknum].name : "none");
798	#endif	777	#endif
799		778
800	/* Change to the new skill, then execute it. */
801	if(do_skill(op,op,skop, op->facing,string)) return 1;	779	if (do_skill (op, op, skop, op->facing, string))
802
803	return 0;	780	return 1;
804	}
805		781
		782	return 0;
		783	}
806		784
		785	static bool
		786	hth_skill_p (object *skill)
		787	{
		788	return (skill_flags [skill->subtype] & (SF_COMBAT | SF_NEED_WEAPON)) == SF_COMBAT;
		789	}
807		790
808	/* This finds the best unarmed skill the player has, and returns	791	/* This finds the first unarmed skill the player has, and returns it.
809	* it. Best can vary a little - we consider clawing to always
810	* be the best for dragons.
811	* This could be more intelligent, eg, look at the skill level
812	* of the skill and go from there (eg, a level 40 puncher is
813	* is probably better than level 1 karate). OTOH, if you
814	* don't bother to set up your skill properly, that is the players
815	* problem (although, it might be nice to have a preferred skill
816	* field the player can set.
817	* Unlike the old code, we don't give out any skills - it is
818	* possible you just don't have any ability to get into unarmed
819	* combat. If everyone race/class should have one, this should
820	* be handled in the starting treasurelists, not in the code.
821	*/	792	*/
		793	static object *
822	static object *find_best_player_hth_skill(object *op)	794	find_player_hth_skill (object *op)
823	{	795	{
824	object *tmp, *best_skill=NULL;
825	int dragon = is_dragon_pl(op), last_skill=sizeof(unarmed_skills), i;
826
827	for (tmp=op->inv; tmp; tmp=tmp->below) {	796	for (object *tmp = op->inv; tmp; tmp = tmp->below)
828	if (tmp->type == SKILL) {	797	if (tmp->type == SKILL && QUERY_FLAG (tmp, FLAG_CAN_USE_SKILL) && hth_skill_p (tmp))
829	if (dragon && tmp->subtype == SK_CLAWING) return tmp;	798	return tmp;
830		799
831	/* The order in the array is preferred order. So basically,	800	return 0;
832	* we just cut down the number to search - eg, if we find a skill
833	* early on in flame touch, then we only need to look into the unarmed_array
834	* to the entry before flame touch - don't care about the entries afterward,
835	* because they are infrerior skills.
836	* if we end up finding the best skill (i==0) might as well return
837	* right away - can't get any better than that.
838	*/
839	for (i=0; i<last_skill; i++) {
840	if (tmp->subtype == unarmed_skills[i] && QUERY_FLAG(tmp, FLAG_CAN_USE_SKILL)) {
841	best_skill = tmp;
842	last_skill = i;
843	if (i==0) return best_skill;
844	}
845	}
846	}
847	}
848	return best_skill;
849	}	801	}
850		802
851	/* do_skill_attack() - We have got an appropriate opponent from either	803	/* do_skill_attack() - We have got an appropriate opponent from either
852	* move_player_attack() or skill_attack(). In this part we get on with	804	* move_player_attack() or skill_attack(). In this part we get on with
853	* attacking, take care of messages from the attack and changes in invisible.	805	* attacking, take care of messages from the attack and changes in invisible.
…		…
855	* tmp is the targetted monster.	807	* tmp is the targetted monster.
856	* op is what is attacking	808	* op is what is attacking
857	* string is passed along to describe what messages to describe	809	* string is passed along to describe what messages to describe
858	* the damage.	810	* the damage.
859	*/	811	*/
860		812	static int
861	static int do_skill_attack(object *tmp, object *op, const char *string, object *skill) {	813	do_skill_attack (object *tmp, object *op, const char *string, object *skill)
862	int success;	814	{
		815	if (INVOKE_OBJECT (SKILL_ATTACK, op, ARG_OBJECT (tmp), ARG_STRING (string), ARG_OBJECT (skill)))
		816	return RESULT_INT (0);
863		817
864	/* For Players only: if there is no ready weapon, and no "attack" skill	818	/* For Players only: if there is no ready weapon, and no "attack" skill
865	* is readied either then try to find a skill for the player to use.	819	* is readied either then try to find a skill for the player to use.
866	* it is presumed that if skill is set, it is a valid attack skill (eg,	820	* it is presumed that if skill is set, it is a valid attack skill (eg,
867	* the caller should have set it appropriately). We still want to pass	821	* the caller should have set it appropriately). We still want to pass
868	* through that code if skill is set to change to the skill.	822	* through that code if skill is set to change to the skill.
869	*/	823	*/
870	if(op->type==PLAYER) {	824	if (player *pl = op->contr)
871	if (!QUERY_FLAG(op,FLAG_READY_WEAPON)) {	825	{
872	size_t i;
873
874	if (!skill) {	826	if (skill)
		827	op->change_skill (skill);
		828	else
		829	{
		830	if (!pl->combat_ob)
		831	{
		832	if (QUERY_FLAG (op, FLAG_READY_WEAPON))
		833	{
		834	for (tmp = op->inv; tmp; tmp = tmp->below)
		835	if (tmp->type == WEAPON && QUERY_FLAG (tmp, FLAG_APPLIED))
		836	break;
		837
		838	if (!tmp)
		839	LOG (llevError, "Could not find applied weapon on %s\n", &op->name);
		840
		841	pl->combat_ob = tmp;
		842	}
		843
		844	if (!pl->combat_ob)
		845	{
875	/* See if the players chosen skill is a combat skill, and use	846	/* See if the players chosen skill is a combat skill, and use
876	* it if appropriate.	847	* it if appropriate.
877	*/	848	*/
878	if (op->chosen_skill) {	849	if (op->chosen_skill && hth_skill_p (op->chosen_skill))
879	for (i=0; i<sizeof(unarmed_skills); i++)
880	if (op->chosen_skill->subtype == unarmed_skills[i]) {
881	skill = op->chosen_skill;	850	skill = op->chosen_skill;
882	break;	851	else
883	}	852	{
884	}
885	/* If we didn't find a skill above, look harder for a good skill */
886	if (!skill) {
887	skill = find_best_player_hth_skill(op);	853	skill = find_player_hth_skill (op);
888	// if ((skill = execute_global_event(EVENT_FIND_UNARMED_SKILL, op)) <= 0) {	854
		855	if (!skill)
		856	new_draw_info (NDI_BLACK, 0, op, "You have no unarmed combat skills!");
889	// }	857	}
890		858
891	if (!skill) {	859	if (skill)
892	new_draw_info(NDI_BLACK, 0, op, "You have no unarmed combat skills!");	860	{
893	return 0;	861	op->change_skill (0);
894	}	862	apply_special (op, skill, AP_APPLY);
895	}	863	}
896	}	864	}
897	if (skill != op->chosen_skill) {
898	/* now try to ready the new skill */
899	if(!change_skill(op,skill,0)) { /* oh oh, trouble! */
900	new_draw_info_format(NDI_UNIQUE, 0, tmp, "Couldn't change to skill %s", skill->name);
901	return 0;
902	}
903	}
904	} else {
905	/* Seen some crashes below where current_weapon is not set,
906	* even though the flag says it is. So if current weapon isn't set,
907	* do some work in trying to find the object to use.
908	*/
909	if (!op->current_weapon) {
910	object *tmp;
911		865
912	LOG(llevError,"Player %s does not have current weapon set but flag_ready_weapon is set\n",	866	if (!pl->combat_ob)
913	op->name);	867	{
914	for (tmp=op->inv; tmp; tmp=tmp->below)	868	LOG (llevError, "Could not find anything to attack on %s\n", &op->name);
915	if (tmp->type == WEAPON && QUERY_FLAG(tmp, FLAG_APPLIED)) break;	869	return 0;
		870	}
		871	}
916		872
917	if (op->current_weapon_script)	873	if (!op->change_weapon (pl->combat_ob))
918	FREE_AND_CLEAR_STR(op->current_weapon_script);	874	return 0;
919	if (!tmp) {	875	}
920	LOG(llevError,"Could not find applied weapon on %s\n",
921	op->name);
922	op->current_weapon=NULL;
923	return 0;
924	} else {
925	op->current_weapon = tmp;
926	op->current_weapon_script=add_string(query_name(tmp));
927	}
928	}
929		876
930	/* Has ready weapon - make sure chosen_skill is set up properly */
931	if (!op->chosen_skill || op->current_weapon->skill != op->chosen_skill->skill) {
932	change_skill(op, find_skill_by_name(op, op->current_weapon->skill), 1);
933	}
934	}
935	}
936
937	/* lose invisiblity/hiding status for running attacks */	877	/* lose invisiblity/hiding status for running attacks */
938		878	if (pl->tmp_invis)
939	if(op->type==PLAYER && op->contr->tmp_invis) {	879	{
940	op->contr->tmp_invis=0;	880	pl->tmp_invis = 0;
941	op->invisible=0;	881	op->invisible = 0;
942	op->hide=0;	882	op->hide = 0;
943	update_object(op,UP_OBJ_FACE);	883	update_object (op, UP_OBJ_CHANGE);
		884	}
944	}	885	}
945		886
946	success = attack_ob(tmp,op);	887	int success = attack_ob (tmp, op);
947		888
948	/* print appropriate messages to the player */	889	/* print appropriate messages to the player */
949		890
950	if(success && string!=NULL && tmp && !QUERY_FLAG(tmp,FLAG_FREED)) {	891	if (success && string && tmp && !QUERY_FLAG (tmp, FLAG_FREED))
		892	{
951	if(op->type==PLAYER)	893	if (op->type == PLAYER)
952	new_draw_info_format(NDI_UNIQUE, 0,op,	894	new_draw_info_format (NDI_UNIQUE, 0, op, "You %s %s!", string, query_name (tmp));
953	"You %s %s!",string,query_name(tmp));
954	else if(tmp->type==PLAYER)	895	else if (tmp->type == PLAYER)
955	new_draw_info_format(NDI_UNIQUE, 0,tmp,	896	new_draw_info_format (NDI_UNIQUE, 0, tmp, "%s %s you!", query_name (op), string);
956	"%s %s you!",query_name(op),string);
957	}	897	}
		898
958	return success;	899	return success;
959	}	900	}
960
961		901
962	/* skill_attack() - Core routine for use when we attack using a skills	902	/* skill_attack() - Core routine for use when we attack using a skills
963	* system. In essence, this code handles	903	* system. In essence, this code handles
964	* all skill-based attacks, ie hth, missile and melee weapons should be	904	* all skill-based attacks, i.e. hth, missile and melee weapons should be
965	* treated here. If an opponent is already supplied by move_player(),	905	* treated here. If an opponent is already supplied by move_player(),
966	* we move right onto do_skill_attack(), otherwise we find if an	906	* we move right onto do_skill_attack(), otherwise we find if an
967	* appropriate opponent exists.	907	* appropriate opponent exists.
968	*	908	*
969	* This is called by move_player() and attack_hth()	909	* This is called by move_player() and attack_hth()
970	*	910	*
971	* Initial implementation by -bt thomas@astro.psu.edu	911	* Initial implementation by -bt thomas@astro.psu.edu
972	*/	912	*/
973		913	int
974	int skill_attack (object *tmp, object *pl, int dir, const char *string, object *skill) {	914	skill_attack (object *tmp, object *pl, int dir, const char *string, object *skill)
		915	{
975	sint16 tx,ty;	916	sint16 tx, ty;
976	mapstruct *m;	917	maptile *m;
977	int mflags;	918	int mflags;
978		919
		920	if (!dir)
979	if(!dir) dir=pl->facing;	921	dir = pl->facing;
		922
980	tx=freearr_x[dir];	923	tx = freearr_x[dir];
981	ty=freearr_y[dir];	924	ty = freearr_y[dir];
982		925
983	/* If we don't yet have an opponent, find if one exists, and attack.	926	/* If we don't yet have an opponent, find if one exists, and attack.
984	* Legal opponents are the same as outlined in move_player_attack()	927	* Legal opponents are the same as outlined in move_player_attack()
985	*/	928	*/
986		929	if (!tmp)
987	if(tmp==NULL) {	930	{
988	m = pl->map;	931	m = pl->map;
989	tx = pl->x + freearr_x[dir];	932	tx = pl->x + freearr_x[dir];
990	ty = pl->y + freearr_y[dir];	933	ty = pl->y + freearr_y[dir];
991		934
992	mflags = get_map_flags(m, &m, tx, ty, &tx, &ty);	935	mflags = get_map_flags (m, &m, tx, ty, &tx, &ty);
993	if (mflags & P_OUT_OF_MAP) return 0;	936	if (mflags & P_OUT_OF_MAP)
		937	return 0;
994		938
995	/* space must be blocked for there to be anything interesting to do */	939	/* space must be blocked for there to be anything interesting to do */
996	if (!OB_TYPE_MOVE_BLOCK(pl, GET_MAP_MOVE_BLOCK(m, tx,ty))) return 0;	940	if (!OB_TYPE_MOVE_BLOCK (pl, GET_MAP_MOVE_BLOCK (m, tx, ty)))
		941	return 0;
997		942
998	for(tmp=get_map_ob(m, tx, ty); tmp; tmp=tmp->above)	943	for (tmp = GET_MAP_OB (m, tx, ty); tmp; tmp = tmp->above)
999	if((QUERY_FLAG(tmp,FLAG_ALIVE) && tmp->stats.hp>=0)	944	if ((QUERY_FLAG (tmp, FLAG_ALIVE) && tmp->stats.hp >= 0) || QUERY_FLAG (tmp, FLAG_CAN_ROLL) || tmp->type == LOCKED_DOOR)
1000	|| QUERY_FLAG(tmp, FLAG_CAN_ROLL)	945	{
1001	|| tmp->type==LOCKED_DOOR ) {
1002	/* Don't attack party members */	946	/* Don't attack party members */
1003	if((pl->type==PLAYER && tmp->type==PLAYER) && (pl->contr->party!=NULL	947	if ((pl->type == PLAYER && tmp->type == PLAYER) && (pl->contr->party != NULL && pl->contr->party == tmp->contr->party))
1004	&& pl->contr->party==tmp->contr->party))	948	return 0;
1005	return 0;	949
1006	break;	950	break;
		951	}
1007	}	952	}
1008	}	953
1009	if (!tmp) {	954	if (!tmp)
		955	{
1010	if(pl->type==PLAYER)	956	if (pl->type == PLAYER)
1011	new_draw_info(NDI_UNIQUE, 0,pl,"There is nothing to attack!");	957	new_draw_info (NDI_UNIQUE, 0, pl, "There is nothing to attack!");
1012	return 0;
1013	}
1014		958
		959	return 0;
		960	}
		961
1015	return do_skill_attack(tmp,pl,string, skill);	962	return do_skill_attack (tmp, pl, string, skill);
1016	}	963	}
1017
1018		964
1019	/* attack_hth() - this handles all hand-to-hand attacks -b.t. */	965	/* attack_hth() - this handles all hand-to-hand attacks -b.t. */
		966
1020	/* July 5, 1995 - I broke up attack_hth() into 2 parts. In the first	967	/* July 5, 1995 - I broke up attack_hth() into 2 parts. In the first
1021	* (attack_hth) we check for weapon use, etc in the second (the new	968	* (attack_hth) we check for weapon use, etc in the second (the new
1022	* function skill_attack() we actually attack.	969	* function skill_attack() we actually attack.
1023	*/	970	*/
1024		971	static int
1025	static int attack_hth(object *pl, int dir, const char *string, object *skill) {	972	attack_hth (object *pl, int dir, const char *string, object *skill)
		973	{
1026	object *enemy=NULL,*weapon;	974	object *enemy = NULL, *weapon;
1027		975
1028	if(QUERY_FLAG(pl, FLAG_READY_WEAPON))	976	if (QUERY_FLAG (pl, FLAG_READY_WEAPON))
1029	for(weapon=pl->inv;weapon;weapon=weapon->below) {	977	for (weapon = pl->inv; weapon; weapon = weapon->below)
		978	{
1030	if (weapon->type==WEAPON && QUERY_FLAG(weapon, FLAG_APPLIED)) {	979	if (weapon->type == WEAPON && QUERY_FLAG (weapon, FLAG_APPLIED))
		980	{
1031	CLEAR_FLAG(weapon,FLAG_APPLIED);	981	CLEAR_FLAG (weapon, FLAG_APPLIED);
1032	CLEAR_FLAG(pl,FLAG_READY_WEAPON);	982	CLEAR_FLAG (pl, FLAG_READY_WEAPON);
1033	fix_player(pl);	983	pl->update_stats ();
1034	if(pl->type==PLAYER) {	984	if (pl->type == PLAYER)
		985	{
1035	new_draw_info(NDI_UNIQUE, 0,pl,"You unwield your weapon in order to attack.");	986	new_draw_info (NDI_UNIQUE, 0, pl, "You unwield your weapon in order to attack.");
1036	esrv_update_item(UPD_FLAGS, pl, weapon);	987	esrv_update_item (UPD_FLAGS, pl, weapon);
1037	}	988	}
1038	break;	989
		990	break;
		991	}
1039	}	992	}
1040	}	993
1041	return skill_attack(enemy,pl,dir,string, skill);	994	return skill_attack (enemy, pl, dir, string, skill);
1042	}	995	}
1043
1044		996
1045	/* attack_melee_weapon() - this handles melee weapon attacks -b.t.	997	/* attack_melee_weapon() - this handles melee weapon attacks -b.t.
1046	* For now we are just checking to see if we have a ready weapon here.	998	* For now we are just checking to see if we have a ready weapon here.
1047	* But there is a real neato possible feature of this scheme which	999	* But there is a real neato possible feature of this scheme which
1048	* bears mentioning:	1000	* bears mentioning:
1049	* Since we are only calling this from do_skill() in the future	1001	* Since we are only calling this from do_skill() in the future
1050	* we may make this routine handle 'special' melee weapons attacks	1002	* we may make this routine handle 'special' melee weapons attacks
1051	* (like disarming manuever with sai) based on player SK_level and	1003	* (like disarming manuever with sai) based on player SK_level and
1052	* weapon type.	1004	* weapon type.
1053	*/	1005	*/
1054		1006	static int
1055	static int attack_melee_weapon(object *op, int dir, const char *string, object *skill) {	1007	attack_melee_weapon (object *op, int dir, const char *string, object *skill)
		1008	{
1056		1009
1057	if(!QUERY_FLAG(op, FLAG_READY_WEAPON)) {	1010	if (!QUERY_FLAG (op, FLAG_READY_WEAPON))
		1011	{
1058	if(op->type==PLAYER)	1012	if (op->type == PLAYER)
1059	new_draw_info(NDI_UNIQUE, 0,op,"You have no ready weapon to attack with!");	1013	new_draw_info (NDI_UNIQUE, 0, op, "You have no ready weapon to attack with!");
1060	return 0;	1014
		1015	return 0;
1061	}	1016	}
		1017
1062	return skill_attack(NULL,op,dir,string, skill);	1018	return skill_attack (NULL, op, dir, string, skill);
1063
1064	}	1019	}
		1020

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