server/pod/events.pod

=head1 DELIANTRA PLUG-IN EVENTS

This document briefly describes each plug-in event. It is also used to
generate the event-list itself, so is always complete. Be careful wehn
changing it, though.

=head2 NOTATION

the event description below uses a variant of the forth stack notation -
an opening parenthesis followed by the type of each parameter, optionally
followed by two dashes and the returning parameters. If the latter is
missing, the event will be invoked but cannot change wether the event gets
processed.

If it is specified (even if no return values are supported), a plug-in
can override (e.g. using C<cf::override> in Perl) event processing,
basically short-circuiting it. For example, if you override from within a
player BIRTH event, nothing much will happen with respect to the built-in
processing, but if you override from within a player TELL event, the tell
will be ignored (presumably your plug-in took care of it).


=head2 ATTACHABLE EVENTS

No time to document this, screw me.

=head3 instantiate (object init-args...)

An object was instantiated.

For objects, this event occurs when a map is loaded for the first time
when it was instantiated from an archetype, or when the object was created
dynamically. The arguments are as specified in the C<attach> attribute of
the object or archetype.

This is useful to initialise any per-object state you might need.

=head3 reattach (object)

Invoked whenever attachments/plug-ins need to get reattached to the
object. This usually happens when it was loaded from disk, or when the
server was reloaded. This event will only be generated if the object has
attachments.

=head3 clone (object destination)

An object with _attached plugin_ is cloned, that is, a copy was made. The
copy automatically has all attachments the original object had. The perl
variables get copied in a shallow way (references are shared between
instances). If this is not the behaviour you need, you have to adjust the
B<destination> object as you see fit.

=head3 destroy (object -- )

Invoked when the deliantra object gets destroyed, and only when the object
has a handler for this event. This event can occur many times, as its
called when the in-memory object is destroyed, not when the object itself
dies.


=head2 OBJECT EVENTS

Object events always relate to a specific object, which is always the
first argument. Not all events get generated for every object, some are
specific to an object type.

=head3 add_bonus (item creator difficulty max_magic flags -- )

A basic item has been created (e.g. for shops, monsters drops etc.)
that needs bonus values applied. The B<creator> object is a template
object that can be used to inherit stuff (and can be NULL). Flags is a
combination of GT_ENVIRONMENT (???) or GT_STARTEQUIP (set FLAG_STARTEQUIP
on item or set its value to 0) or GT_MINIMAL (???)

When overriden, built-in bonus generation is skipped, otherwise
treasure generation continues as it would without this hook.

In general, if flags != 0 or creator != 0 you should just return and leave
item generation to the standard code.

=head3 remove (object -- )

Invoked before the object is removed from its environment.

=head3 insert (object -- )

Called after the object was inserted into a container or map.

=head3 tick (object -- )

Invoked whenever the object "ticks", i.e. has positive B<speed_left>. Only
during ticks should an objetc process any movement or other events.

=head3 kill (object hitter -- )

Invoked whenever an object was killed (hp < 0 caused by an attack) and is
about to get removed. Overriding processing will skip removal, but to do
this successfully you have to keep the object from dieing, otherwise the
event gets invoked again and again.

=head3 apply (object who -- applytype)

Invoked whenever the object is being applied in some way. The applytype is one of:

=head3 auto_apply (object)

Invoked whenever the object is automatically applied (as for example shop tiles
are on map instantiation). See also the 'auto_apply' flag to enforce auto apply on
any object.

=over 4

=item B<0> player or monster can't apply objects of that type

=item B<1> has been applied, or there was an error applying the object

=item B<2> objects of that type can't be applied if not in inventory

=back

=head3 throw (object thrower)

Invoked when an B<object> is thrown by B<thrower>.

=head3 stop (object -- )

Invoked when a thrown B<object> (arrow, other stuff) hits something and is
thus being "stopped".

=head3 can_apply (who object -- reason)

=head3 can_be_applied (object who -- reason)

Check wether the B<object> can be applied/readied/etc. by the
object B<who> and return reason otherwise. Reason is a bitset composed of
C<CAN_APPLY_*>-flags.

=head3 be_ready (object who -- success)

=head3 ready (who object -- success)

Invoked whenever an B<object> is being applied by object B<who>. See
I<can_apply> for an alternative if you just want to check wether something
can apply an object.

=head3 be_unready (object who -- deleted)

=head3 unready (who object -- deleted)

Unwield/unapply/unready the given spell/weapon/skill/etc. B<object>,
currently applied by B<who>. If your override, make sure you give 'who'
(if it is a player) an indication of whats wrong. Must return true if the
object was freed.

=head3 use_skill (skill who part direction stringarg -- )

Invoked whenever a skill is used by somebody or something.

=head3 cast_spell (spell owner casting_object direction stringarg -- )

Invoked whenever a given spell is cast by B<casting_object> (used by
B<owner>).

=head3 drop (object who -- )

Invoked whenever an item gets dropped by somebody, e.g. as a result of a
drop command.

=head3 drop_on (floor object who -- )

Invoked whenever some B<object> is being dropped on the B<floor> object.

=head3 say (object player message)

Invoked whenever the I<object> can hear a B<message> being said by
B<player> in its vicinity.

=head3 monster_move (monster enemy -- )

Invoked whenever the B<monster> tries to move, just after B<enemy> and
other parameters have been determined, but before movement is actually
executed.

=head3 attack (object hitter -- damage)

Object gets attacked by somebody - when overriden, should return the
damage that has been dealt.

=head3 skill_attack (attacker victim message skill -- success)

Invoked whenever an B<attacker> attacks B<victim> using a B<skill> (skill
cna be C<undef>). B<message> is the message that describes the attack when
damage is done.

=head3 weapon_attack (weapon hitter victim)

Invoked whenever an object is used as a B<weapon> by B<hitter> to attack
B<victim>.

=head3 inscribe_note (book pl message skill -- )

Used whenever a book gets inscribed with a message.

=head3 trigger (object who -- )

Invoked whenever a lever-like B<object> has been activated/triggered in some
(manual) way.

=head3 move_trigger (object victim originator -- )

Invoked whenever a trap-like B<object> has been activated, usually by
moving onto it. This includes not just traps, but also buttons, holes,
signs and similar stuff.

=head3 open (container who -- )

Invoked whenever a container gets opened. When overriden, the container will not
get opened, but you must tell op about the reason.

=head3 close (container who -- )

Invoked whenever a container gets closed. When overriden, the container
will not get closed, but you must tell op about the reason. This event
is not crash-safe, i.e. containers might be closed due to a server crash
without this event being invoked.


=head2 GLOBAL EVENTS

Global events have no relation to specific objects.

=head3 cleanup ()

Called when the server is cleaning up, just before it calls exit.

=head3 clock ()

Is invoked on every server tick, usually every 0.12 seconds.

=head3 resource_update ()

Is invoked after each time the server reloads its resources, which is
usually one of the earliest things it does when starting up.


=head2 PLAYER EVENTS

Player events always have a player object as first argument.

=head3 birth (player)

Invoked as very first thing after creating a player.

=head3 quit (player)

Invoked wheneever a player quits, before actually removing him/her.

=head3 kick (player params -- )

Invoked when the given player is being kicked, before the kick is
executed.

=head3 load (player -- )

Invoked whenever a player has been loaded from disk, but before
actual login.

=head3 save (player -- )

Invoked just before a player gets serialised.

=head3 save_done (player -- )

Invoked just after a player was serialised.

=head3 connect (player -- )

Invoked just after the player object was connected to a client.

=head3 disconnect (player -- )

Invoked just before the player gets disconnected from the client.

=head3 login (player)

Invoked whenever a player logs in.

=head3 logout (player cleanly -- )

Invoked whenever a player logs out, gets disconnected etc.

=head3 death (player)

Invoked whenever a player dies, before the death actually gets processed.

=head3 map_change (player newmap x y -- )

Invoked before a player moves from one map to another, can override the movement.

=head3 region_change (player newregion oldregion -- )

Invoked when a player entered a new region. Cannot be overriden.

=head3 command (player command args -- time)

Execute a user command send by the client. Programmable plug-ins usually
handle this event internally.

=head3 extcmd (player string)

Invoked whenever a client issues the C<extcmd> protocol command.
Programmable plug-ins usually handle this event internally.

=head3 move (player direction -- )

Called whenever the player is supposed to move or attack. The handler
must handle the cases of speed_left or weapon_sp_left being negative,
fire being on, is responsible for decreaseing the speed_left value
on successful moves etc. etc.. When overriden, must return a boolean
indicating wether a move could be effected.

=head3 pray_altar (player altar skill -- )

Invoked whenever the B<player> prays over an B<altar>, using the given B<skill>.

=head3 tell (player name message -- )

Invoked whenever the player uses the B<tell> or B<reply> command, before
it gets processed.

=head3 told (player player message -- )

Invoked right before a message is being told to a player using B<tell> or
B<reply>.

=head3 say (player message --)

=head3 chat (player message --)

=head3 shout (player message --)

Invoked whenever the player uses the B<say>, B<chat> or B<shout> command,
before it gets processed.


=head2 MAP EVENTS

These events are generally dependent on a map and thus all have a map
as first argument.

=head3 instantiate (map)

Original B<map> has been loaded (e.g. on first use, or after a map
reset).

=head3 swapin (map)

Invoked when a previously swapped-out temporary B<map> has been loaded again.

=head3 swapout (map)

Invoked after a B<map> has been swapped out to disk.

=head3 reset (map)

Invoked when a B<map> gets reset.

=head3 clean (map)

Invoked when a temporary B<map> gets deleted on-disk.

=head3 enter (map player x y -- )

Invoked whenever a player tries to enter the B<map>, while he/she is still
on the old map. Overriding means the player won't be able to enter, and,
if newmap/x/y are given, will be redirected to that map instead.

=head3 leave (map player -- )

Invoked whenever a player tries to leave the B<map>. Overriding means the
player won't be able to leave.

=head3 trigger (map connection state -- )

Invoked whenever something activates a B<connection> on the B<map>. If B<state>
is true the connection was 'state' and if false it is 'released'.


=head2 CLIENT EVENTS

These events are very similar to player events, but they are might be
handled asynchronously as soon as the command reaches the server, even when
the player hasn't logged in yet (meaning there is no player yet).

=head3 connect (client -- )

Called as soon as a new connection to the server is established. Should
not be overriden.

=head3 setup (client string -- )

Client sent the setup command to negotiate parameters. Handling is
mandatory and done by F<login.ext>.

=head3 addme (client -- )

The client sent an addme, thus ending the initial handshaking. Handling is mandatory
and done by F<login.ext>.

=head3 reply (client replystring -- )

Called when the client submits a reply in the ST_CUSTOM state. Usually
handled internally by language plugins.

=head3 exticmd (client string -- )

Like C<extcmd>, but can be called before a player has logged in.

Programmable plug-ins usually handle this event internally.

Revision:	1.26
Committed:	Mon Jul 14 10:26:43 2008 UTC (15 years, 10 months ago) by elmex
Branch:	MAIN
Changes since 1.25:	+6 -0 lines
Log Message:	added auto_apply event and shop ring attachments
#	User	Rev	Content
1	root	1.23	=head1 DELIANTRA PLUG-IN EVENTS
2	pippijn	1.1
3			This document briefly describes each plug-in event. It is also used to
4			generate the event-list itself, so is always complete. Be careful wehn
5			changing it, though.
6
7			=head2 NOTATION
8
9			the event description below uses a variant of the forth stack notation -
10			an opening parenthesis followed by the type of each parameter, optionally
11			followed by two dashes and the returning parameters. If the latter is
12			missing, the event will be invoked but cannot change wether the event gets
13			processed.
14
15			If it is specified (even if no return values are supported), a plug-in
16			can override (e.g. using C<cf::override> in Perl) event processing,
17			basically short-circuiting it. For example, if you override from within a
18			player BIRTH event, nothing much will happen with respect to the built-in
19			processing, but if you override from within a player TELL event, the tell
20			will be ignored (presumably your plug-in took care of it).
21
22
23	root	1.12	=head2 ATTACHABLE EVENTS
24	pippijn	1.1
25	root	1.12	No time to document this, screw me.
26	pippijn	1.1
27			=head3 instantiate (object init-args...)
28
29	root	1.12	An object was instantiated.
30
31			For objects, this event occurs when a map is loaded for the first time
32			when it was instantiated from an archetype, or when the object was created
33	pippijn	1.1	dynamically. The arguments are as specified in the C<attach> attribute of
34			the object or archetype.
35
36			This is useful to initialise any per-object state you might need.
37
38			=head3 reattach (object)
39
40			Invoked whenever attachments/plug-ins need to get reattached to the
41			object. This usually happens when it was loaded from disk, or when the
42			server was reloaded. This event will only be generated if the object has
43			attachments.
44
45			=head3 clone (object destination)
46
47	root	1.12	An object with _attached plugin_ is cloned, that is, a copy was made. The
48			copy automatically has all attachments the original object had. The perl
49			variables get copied in a shallow way (references are shared between
50			instances). If this is not the behaviour you need, you have to adjust the
51			B<destination> object as you see fit.
52
53			=head3 destroy (object -- )
54
55	root	1.23	Invoked when the deliantra object gets destroyed, and only when the object
56	root	1.12	has a handler for this event. This event can occur many times, as its
57			called when the in-memory object is destroyed, not when the object itself
58			dies.
59
60
61			=head2 OBJECT EVENTS
62
63			Object events always relate to a specific object, which is always the
64			first argument. Not all events get generated for every object, some are
65			specific to an object type.
66	pippijn	1.1
67	root	1.20	=head3 add_bonus (item creator difficulty max_magic flags -- )
68	root	1.6
69			A basic item has been created (e.g. for shops, monsters drops etc.)
70			that needs bonus values applied. The B<creator> object is a template
71			object that can be used to inherit stuff (and can be NULL). Flags is a
72			combination of GT_ENVIRONMENT (???) or GT_STARTEQUIP (set FLAG_STARTEQUIP
73			on item or set its value to 0) or GT_MINIMAL (???)
74
75			When overriden, built-in bonus generation is skipped, otherwise
76			treasure generation continues as it would without this hook.
77
78			In general, if flags != 0 or creator != 0 you should just return and leave
79			item generation to the standard code.
80
81	root	1.12	=head3 remove (object -- )
82
83			Invoked before the object is removed from its environment.
84
85			=head3 insert (object -- )
86	pippijn	1.1
87	root	1.12	Called after the object was inserted into a container or map.
88	pippijn	1.1
89	root	1.12	=head3 tick (object -- )
90	pippijn	1.1
91			Invoked whenever the object "ticks", i.e. has positive B<speed_left>. Only
92			during ticks should an objetc process any movement or other events.
93
94			=head3 kill (object hitter -- )
95
96	root	1.25	Invoked whenever an object was killed (hp < 0 caused by an attack) and is
97			about to get removed. Overriding processing will skip removal, but to do
98			this successfully you have to keep the object from dieing, otherwise the
99			event gets invoked again and again.
100	pippijn	1.1
101			=head3 apply (object who -- applytype)
102
103			Invoked whenever the object is being applied in some way. The applytype is one of:
104
105	elmex	1.26	=head3 auto_apply (object)
106
107			Invoked whenever the object is automatically applied (as for example shop tiles
108			are on map instantiation). See also the 'auto_apply' flag to enforce auto apply on
109			any object.
110
111	pippijn	1.1	=over 4
112
113			=item B<0> player or monster can't apply objects of that type
114
115			=item B<1> has been applied, or there was an error applying the object
116
117			=item B<2> objects of that type can't be applied if not in inventory
118
119			=back
120
121			=head3 throw (object thrower)
122
123			Invoked when an B<object> is thrown by B<thrower>.
124
125			=head3 stop (object -- )
126
127			Invoked when a thrown B<object> (arrow, other stuff) hits something and is
128			thus being "stopped".
129
130			=head3 can_apply (who object -- reason)
131
132			=head3 can_be_applied (object who -- reason)
133
134			Check wether the B<object> can be applied/readied/etc. by the
135			object B<who> and return reason otherwise. Reason is a bitset composed of
136			C<CAN_APPLY_*>-flags.
137
138			=head3 be_ready (object who -- success)
139
140			=head3 ready (who object -- success)
141
142			Invoked whenever an B<object> is being applied by object B<who>. See
143			I<can_apply> for an alternative if you just want to check wether something
144			can apply an object.
145
146			=head3 be_unready (object who -- deleted)
147
148			=head3 unready (who object -- deleted)
149
150			Unwield/unapply/unready the given spell/weapon/skill/etc. B<object>,
151			currently applied by B<who>. If your override, make sure you give 'who'
152			(if it is a player) an indication of whats wrong. Must return true if the
153			object was freed.
154
155	root	1.19	=head3 use_skill (skill who part direction stringarg -- )
156	pippijn	1.1
157			Invoked whenever a skill is used by somebody or something.
158
159	root	1.19	=head3 cast_spell (spell owner casting_object direction stringarg -- )
160	pippijn	1.1
161			Invoked whenever a given spell is cast by B<casting_object> (used by
162			B<owner>).
163
164			=head3 drop (object who -- )
165
166			Invoked whenever an item gets dropped by somebody, e.g. as a result of a
167			drop command.
168
169			=head3 drop_on (floor object who -- )
170
171			Invoked whenever some B<object> is being dropped on the B<floor> object.
172
173			=head3 say (object player message)
174
175			Invoked whenever the I<object> can hear a B<message> being said by
176			B<player> in its vicinity.
177
178			=head3 monster_move (monster enemy -- )
179
180			Invoked whenever the B<monster> tries to move, just after B<enemy> and
181			other parameters have been determined, but before movement is actually
182			executed.
183
184			=head3 attack (object hitter -- damage)
185
186			Object gets attacked by somebody - when overriden, should return the
187			damage that has been dealt.
188
189			=head3 skill_attack (attacker victim message skill -- success)
190
191			Invoked whenever an B<attacker> attacks B<victim> using a B<skill> (skill
192			cna be C<undef>). B<message> is the message that describes the attack when
193			damage is done.
194
195			=head3 weapon_attack (weapon hitter victim)
196
197			Invoked whenever an object is used as a B<weapon> by B<hitter> to attack
198			B<victim>.
199
200			=head3 inscribe_note (book pl message skill -- )
201
202			Used whenever a book gets inscribed with a message.
203
204			=head3 trigger (object who -- )
205
206			Invoked whenever a lever-like B<object> has been activated/triggered in some
207			(manual) way.
208
209			=head3 move_trigger (object victim originator -- )
210
211			Invoked whenever a trap-like B<object> has been activated, usually by
212			moving onto it. This includes not just traps, but also buttons, holes,
213			signs and similar stuff.
214
215	root	1.15	=head3 open (container who -- )
216
217			Invoked whenever a container gets opened. When overriden, the container will not
218			get opened, but you must tell op about the reason.
219
220	pippijn	1.1	=head3 close (container who -- )
221
222	root	1.15	Invoked whenever a container gets closed. When overriden, the container
223			will not get closed, but you must tell op about the reason. This event
224			is not crash-safe, i.e. containers might be closed due to a server crash
225			without this event being invoked.
226	pippijn	1.1
227
228			=head2 GLOBAL EVENTS
229
230			Global events have no relation to specific objects.
231
232	root	1.3	=head3 cleanup ()
233
234			Called when the server is cleaning up, just before it calls exit.
235
236	root	1.24	=head3 clock ()
237	pippijn	1.1
238			Is invoked on every server tick, usually every 0.12 seconds.
239
240	root	1.24	=head3 resource_update ()
241
242			Is invoked after each time the server reloads its resources, which is
243			usually one of the earliest things it does when starting up.
244
245	root	1.3
246	pippijn	1.1	=head2 PLAYER EVENTS
247
248			Player events always have a player object as first argument.
249
250			=head3 birth (player)
251
252			Invoked as very first thing after creating a player.
253
254			=head3 quit (player)
255
256			Invoked wheneever a player quits, before actually removing him/her.
257
258			=head3 kick (player params -- )
259
260	root	1.14	Invoked when the given player is being kicked, before the kick is
261			executed.
262	pippijn	1.1
263	root	1.14	=head3 load (player -- )
264	pippijn	1.1
265			Invoked whenever a player has been loaded from disk, but before
266			actual login.
267
268	root	1.14	=head3 save (player -- )
269	pippijn	1.1
270	root	1.14	Invoked just before a player gets serialised.
271	pippijn	1.1
272	root	1.14	=head3 save_done (player -- )
273	root	1.13
274	root	1.14	Invoked just after a player was serialised.
275	root	1.13
276			=head3 connect (player -- )
277
278			Invoked just after the player object was connected to a client.
279
280			=head3 disconnect (player -- )
281
282			Invoked just before the player gets disconnected from the client.
283
284	pippijn	1.1	=head3 login (player)
285
286			Invoked whenever a player logs in.
287
288	root	1.21	=head3 logout (player cleanly -- )
289	pippijn	1.1
290			Invoked whenever a player logs out, gets disconnected etc.
291
292			=head3 death (player)
293
294			Invoked whenever a player dies, before the death actually gets processed.
295
296	root	1.4	=head3 map_change (player newmap x y -- )
297	pippijn	1.1
298	root	1.4	Invoked before a player moves from one map to another, can override the movement.
299	pippijn	1.1
300	root	1.22	=head3 region_change (player newregion oldregion -- )
301
302			Invoked when a player entered a new region. Cannot be overriden.
303
304	root	1.7	=head3 command (player command args -- time)
305
306			Execute a user command send by the client. Programmable plug-ins usually
307			handle this event internally.
308
309	pippijn	1.1	=head3 extcmd (player string)
310
311	root	1.7	Invoked whenever a client issues the C<extcmd> protocol command.
312			Programmable plug-ins usually handle this event internally.
313	pippijn	1.1
314			=head3 move (player direction -- )
315
316	root	1.18	Called whenever the player is supposed to move or attack. The handler
317			must handle the cases of speed_left or weapon_sp_left being negative,
318			fire being on, is responsible for decreaseing the speed_left value
319			on successful moves etc. etc.. When overriden, must return a boolean
320			indicating wether a move could be effected.
321
322	pippijn	1.1	=head3 pray_altar (player altar skill -- )
323
324			Invoked whenever the B<player> prays over an B<altar>, using the given B<skill>.
325
326			=head3 tell (player name message -- )
327
328			Invoked whenever the player uses the B<tell> or B<reply> command, before
329			it gets processed.
330
331	pippijn	1.16	=head3 told (player player message -- )
332
333			Invoked right before a message is being told to a player using B<tell> or
334			B<reply>.
335
336	pippijn	1.1	=head3 say (player message --)
337
338			=head3 chat (player message --)
339
340			=head3 shout (player message --)
341
342			Invoked whenever the player uses the B<say>, B<chat> or B<shout> command,
343			before it gets processed.
344
345
346			=head2 MAP EVENTS
347
348			These events are generally dependent on a map and thus all have a map
349			as first argument.
350
351			=head3 instantiate (map)
352
353			Original B<map> has been loaded (e.g. on first use, or after a map
354			reset).
355
356			=head3 swapin (map)
357
358			Invoked when a previously swapped-out temporary B<map> has been loaded again.
359
360			=head3 swapout (map)
361
362			Invoked after a B<map> has been swapped out to disk.
363
364			=head3 reset (map)
365
366			Invoked when a B<map> gets reset.
367
368			=head3 clean (map)
369
370			Invoked when a temporary B<map> gets deleted on-disk.
371
372	root	1.4	=head3 enter (map player x y -- )
373	pippijn	1.1
374	root	1.4	Invoked whenever a player tries to enter the B<map>, while he/she is still
375	root	1.5	on the old map. Overriding means the player won't be able to enter, and,
376			if newmap/x/y are given, will be redirected to that map instead.
377	pippijn	1.1
378	root	1.4	=head3 leave (map player -- )
379	pippijn	1.1
380	root	1.4	Invoked whenever a player tries to leave the B<map>. Overriding means the
381			player won't be able to leave.
382	pippijn	1.1
383	root	1.9	=head3 trigger (map connection state -- )
384	pippijn	1.1
385			Invoked whenever something activates a B<connection> on the B<map>. If B<state>
386			is true the connection was 'state' and if false it is 'released'.
387	root	1.5
388	root	1.8
389			=head2 CLIENT EVENTS
390
391			These events are very similar to player events, but they are might be
392			handled asynchronously as soon as the command reaches the server, even when
393			the player hasn't logged in yet (meaning there is no player yet).
394
395	root	1.9	=head3 connect (client -- )
396
397			Called as soon as a new connection to the server is established. Should
398			not be overriden.
399
400	root	1.17	=head3 setup (client string -- )
401
402			Client sent the setup command to negotiate parameters. Handling is
403			mandatory and done by F<login.ext>.
404
405	root	1.9	=head3 addme (client -- )
406
407	root	1.17	The client sent an addme, thus ending the initial handshaking. Handling is mandatory
408			and done by F<login.ext>.
409	root	1.9
410	root	1.10	=head3 reply (client replystring -- )
411
412			Called when the client submits a reply in the ST_CUSTOM state. Usually
413			handled internally by language plugins.
414
415	root	1.9	=head3 exticmd (client string -- )
416	root	1.8
417			Like C<extcmd>, but can be called before a player has logged in.
418
419			Programmable plug-ins usually handle this event internally.
420