| 1 |
=begin comment |
| 2 |
|
| 3 |
This file is part of Deliantra, the Roguelike Realtime MMORPG. |
| 4 |
|
| 5 |
Copyright (©) 2005,2006,2007,2008,2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
| 6 |
|
| 7 |
Deliantra is free software: you can redistribute it and/or modify it under |
| 8 |
the terms of the Affero GNU General Public License as published by the |
| 9 |
Free Software Foundation, either version 3 of the License, or (at your |
| 10 |
option) any later version. |
| 11 |
|
| 12 |
This program is distributed in the hope that it will be useful, |
| 13 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 |
GNU General Public License for more details. |
| 16 |
|
| 17 |
You should have received a copy of the Affero GNU General Public License |
| 18 |
and the GNU General Public License along with this program. If not, see |
| 19 |
<http://www.gnu.org/licenses/>. |
| 20 |
|
| 21 |
The authors can be reached via e-mail to <support@deliantra.net> |
| 22 |
|
| 23 |
=end comment |
| 24 |
|
| 25 |
=head1 DELIANTRA PLUG-IN EVENTS |
| 26 |
|
| 27 |
This document briefly describes each plug-in event. It is also used to |
| 28 |
generate the event-list itself, so is always complete. Be careful wehn |
| 29 |
changing it, though. |
| 30 |
|
| 31 |
=head2 NOTATION |
| 32 |
|
| 33 |
The event description below uses a variant of the forth stack notation - |
| 34 |
an opening parenthesis followed by the type of each parameter, optionally |
| 35 |
followed by two dashes and the returning parameters. If the latter part is |
| 36 |
missing, the event will be invoked but cannot change wether the event gets |
| 37 |
processed. |
| 38 |
|
| 39 |
Return values are given by overriding (in Perl by calling C<cf::override>) |
| 40 |
with the return values, which will both stop further event processing and |
| 41 |
tell the caller that it wants to override normal processing. |
| 42 |
|
| 43 |
Even if no return values are supported, a plug-in can override (e.g. using |
| 44 |
C<cf::override> in Perl) event processing, basically short-circuiting |
| 45 |
it. For example, if you override from within a player BIRTH event, |
| 46 |
nothing much will happen with respect to the built-in processing, but if |
| 47 |
you override from within a player TELL event, the tell will be ignored |
| 48 |
(presumably your plug-in took care of it). |
| 49 |
|
| 50 |
|
| 51 |
=head2 ATTACHABLE EVENTS |
| 52 |
|
| 53 |
No time to document this, screw me. |
| 54 |
|
| 55 |
=head3 instantiate (object init-args...) |
| 56 |
|
| 57 |
An object was instantiated. |
| 58 |
|
| 59 |
For objects, this event occurs when a map is loaded for the first time |
| 60 |
when it was instantiated from an archetype, or when the object was created |
| 61 |
dynamically. The arguments are as specified in the C<attach> attribute of |
| 62 |
the object or archetype. |
| 63 |
|
| 64 |
This is useful to initialise any per-object state you might need. |
| 65 |
|
| 66 |
=head3 reattach (object) |
| 67 |
|
| 68 |
Invoked whenever attachments/plug-ins need to get reattached to the |
| 69 |
object. This usually happens when it was loaded from disk, or when the |
| 70 |
server was reloaded. This event will only be generated if the object has |
| 71 |
attachments. |
| 72 |
|
| 73 |
=head3 clone (object destination) |
| 74 |
|
| 75 |
An object with _attached plugin_ is cloned, that is, a copy was made. The |
| 76 |
copy automatically has all attachments the original object had. The perl |
| 77 |
variables get copied in a shallow way (references are shared between |
| 78 |
instances). If this is not the behaviour you need, you have to adjust the |
| 79 |
B<destination> object as you see fit. |
| 80 |
|
| 81 |
=head3 destroy (object -- ) |
| 82 |
|
| 83 |
Invoked when the deliantra object gets destroyed, and only when the object |
| 84 |
has a handler for this event. This event can occur many times, as its |
| 85 |
called when the in-memory object is destroyed, not when the object itself |
| 86 |
dies. |
| 87 |
|
| 88 |
|
| 89 |
=head2 OBJECT EVENTS |
| 90 |
|
| 91 |
Object events always relate to a specific object, which is always the |
| 92 |
first argument. Not all events get generated for every object, some are |
| 93 |
specific to an object type. |
| 94 |
|
| 95 |
=head3 add_bonus (item creator difficulty max_magic flags -- ) |
| 96 |
|
| 97 |
A basic item has been created (e.g. for shops, monsters drops etc.) |
| 98 |
that needs bonus values applied. The B<creator> object is a template |
| 99 |
object that can be used to inherit stuff (and can be NULL). Flags is a |
| 100 |
combination of GT_ENVIRONMENT (???) or GT_STARTEQUIP (set FLAG_STARTEQUIP |
| 101 |
on item or set its value to 0) or GT_MINIMAL (???) |
| 102 |
|
| 103 |
When overriden, built-in bonus generation is skipped, otherwise |
| 104 |
treasure generation continues as it would without this hook. |
| 105 |
|
| 106 |
In general, if flags != 0 or creator != 0 you should just return and leave |
| 107 |
item generation to the standard code. |
| 108 |
|
| 109 |
=head3 remove (object -- ) |
| 110 |
|
| 111 |
Invoked before the object is removed from its environment. |
| 112 |
|
| 113 |
=head3 insert (object -- ) |
| 114 |
|
| 115 |
Called after the object was inserted into a container or map. |
| 116 |
|
| 117 |
=head3 tick (object -- ) |
| 118 |
|
| 119 |
Invoked whenever the object "ticks", i.e. has positive B<speed_left>. Only |
| 120 |
during ticks should an objetc process any movement or other events. |
| 121 |
|
| 122 |
=head3 kill (object hitter -- ) |
| 123 |
|
| 124 |
Invoked whenever an object was killed (hp < 0 caused by an attack) and is |
| 125 |
about to get removed. Overriding processing will skip removal, but to do |
| 126 |
this successfully you have to keep the object from dieing, otherwise the |
| 127 |
event gets invoked again and again. |
| 128 |
|
| 129 |
=head3 apply (object who -- applytype) |
| 130 |
|
| 131 |
Invoked whenever the object is being applied in some way. The applytype is one of: |
| 132 |
|
| 133 |
=over 4 |
| 134 |
|
| 135 |
=item B<0> player or monster can't apply objects of that type |
| 136 |
|
| 137 |
=item B<1> has been applied, or there was an error applying the object |
| 138 |
|
| 139 |
=item B<2> objects of that type can't be applied if not in inventory |
| 140 |
|
| 141 |
=back |
| 142 |
|
| 143 |
=head3 reset (object) |
| 144 |
|
| 145 |
Invoked whenever the object is initialised on a map after it was |
| 146 |
loaded. This can be used to emulate shop-floor behaviour for example. |
| 147 |
|
| 148 |
=head3 throw (object thrower) |
| 149 |
|
| 150 |
Invoked when an B<object> is thrown by B<thrower>. |
| 151 |
|
| 152 |
=head3 stop (object -- ) |
| 153 |
|
| 154 |
Invoked when a thrown B<object> (arrow, other stuff) hits something and is |
| 155 |
thus being "stopped". |
| 156 |
|
| 157 |
=head3 can_apply (who object -- reason) |
| 158 |
|
| 159 |
=head3 can_be_applied (object who -- reason) |
| 160 |
|
| 161 |
Check wether the B<object> can be applied/readied/etc. by the |
| 162 |
object B<who> and return reason otherwise. Reason is a bitset composed of |
| 163 |
C<CAN_APPLY_*>-flags. |
| 164 |
|
| 165 |
=head3 be_ready (object who -- success) |
| 166 |
|
| 167 |
=head3 ready (who object -- success) |
| 168 |
|
| 169 |
Invoked whenever an B<object> is being applied by object B<who>. See |
| 170 |
I<can_apply> for an alternative if you just want to check wether something |
| 171 |
can apply an object. |
| 172 |
|
| 173 |
=head3 be_unready (object who -- deleted) |
| 174 |
|
| 175 |
=head3 unready (who object -- deleted) |
| 176 |
|
| 177 |
Unwield/unapply/unready the given spell/weapon/skill/etc. B<object>, |
| 178 |
currently applied by B<who>. If your override, make sure you give 'who' |
| 179 |
(if it is a player) an indication of whats wrong. Must return true if the |
| 180 |
object was freed. |
| 181 |
|
| 182 |
=head3 use_skill (skill who part direction stringarg -- ) |
| 183 |
|
| 184 |
Invoked whenever a skill is used by somebody or something. |
| 185 |
|
| 186 |
=head3 cast_spell (spell owner casting_object direction stringarg -- ) |
| 187 |
|
| 188 |
Invoked whenever a given spell is cast by B<casting_object> (used by |
| 189 |
B<owner>). |
| 190 |
|
| 191 |
=head3 drop (object who -- ) |
| 192 |
|
| 193 |
Invoked whenever an item gets dropped by somebody, e.g. as a result of a |
| 194 |
drop command. |
| 195 |
|
| 196 |
=head3 drop_on (floor object who -- ) |
| 197 |
|
| 198 |
Invoked whenever some B<object> is being dropped on the B<floor> object. |
| 199 |
|
| 200 |
=head3 say (object player message) |
| 201 |
|
| 202 |
Invoked whenever the I<object> can hear a B<message> being said by |
| 203 |
B<player> in its vicinity. |
| 204 |
|
| 205 |
=head3 monster_move (monster enemy -- ) |
| 206 |
|
| 207 |
Invoked whenever the B<monster> tries to move, just after B<enemy> and |
| 208 |
other parameters have been determined, but before movement is actually |
| 209 |
executed. |
| 210 |
|
| 211 |
=head3 attack (object hitter -- damage) |
| 212 |
|
| 213 |
Object gets attacked by somebody - when overriden, should return the |
| 214 |
damage that has been dealt. |
| 215 |
|
| 216 |
=head3 skill_attack (attacker victim message skill -- success) |
| 217 |
|
| 218 |
Invoked whenever an B<attacker> attacks B<victim> using a B<skill> (skill |
| 219 |
can be C<undef>). B<message> is the message that describes the attack when |
| 220 |
damage is done. |
| 221 |
|
| 222 |
=head3 weapon_attack (weapon hitter victim) |
| 223 |
|
| 224 |
Invoked whenever an object is used as a B<weapon> by B<hitter> to attack |
| 225 |
B<victim>. |
| 226 |
|
| 227 |
=head3 inscribe_note (book pl message skill -- ) |
| 228 |
|
| 229 |
Used whenever a book gets inscribed with a message. |
| 230 |
|
| 231 |
=head3 trigger (object who -- ) |
| 232 |
|
| 233 |
Invoked whenever a lever-like B<object> has been activated/triggered in some |
| 234 |
(manual) way. |
| 235 |
|
| 236 |
=head3 move_trigger (object victim originator -- ) |
| 237 |
|
| 238 |
Invoked whenever a trap-like B<object> has been activated, usually by |
| 239 |
moving onto it. This includes not just traps, but also buttons, holes, |
| 240 |
signs and similar stuff. |
| 241 |
|
| 242 |
=head3 open (container who -- ) |
| 243 |
|
| 244 |
Invoked whenever a container gets opened. When overriden, the container will not |
| 245 |
get opened, but you must tell op about the reason. |
| 246 |
|
| 247 |
=head3 close (container who -- ) |
| 248 |
|
| 249 |
Invoked whenever a container gets closed. When overriden, the container |
| 250 |
will not get closed, but you must tell op about the reason. This event |
| 251 |
is not crash-safe, i.e. containers might be closed due to a server crash |
| 252 |
without this event being invoked. |
| 253 |
|
| 254 |
=head3 blocked_move (self who -- do_blocked) |
| 255 |
|
| 256 |
Invoked when an C<who> tries to move to the same space as C<self>, |
| 257 |
C<self>'s C<move_block> causes blocked movement for C<who> and nothing |
| 258 |
else explicitly allows movement to this space. |
| 259 |
|
| 260 |
Should return true when C<who> is blocked, i.e., should not be allowed to |
| 261 |
move onto C<self>. |
| 262 |
|
| 263 |
When not overriding, normal blocked_move (blocked_link) processing will |
| 264 |
happen. |
| 265 |
|
| 266 |
|
| 267 |
=head2 GLOBAL EVENTS |
| 268 |
|
| 269 |
Global events have no relation to specific objects. |
| 270 |
|
| 271 |
=head3 cleanup () |
| 272 |
|
| 273 |
Called when the server is cleaning up, just before it calls exit. |
| 274 |
|
| 275 |
=head3 clock () |
| 276 |
|
| 277 |
Is invoked on every server tick, usually every 0.12 seconds. |
| 278 |
|
| 279 |
=head3 resource_update () |
| 280 |
|
| 281 |
Is invoked after each time the server reloads its resources, which is |
| 282 |
usually one of the earliest things it does when starting up. |
| 283 |
|
| 284 |
|
| 285 |
=head2 PLAYER EVENTS |
| 286 |
|
| 287 |
Player events always have a player object as first argument. |
| 288 |
|
| 289 |
=head3 birth (player) |
| 290 |
|
| 291 |
Invoked as very first thing after creating a player. |
| 292 |
|
| 293 |
=head3 quit (player) |
| 294 |
|
| 295 |
Invoked wheneever a player quits, before actually removing him/her. |
| 296 |
|
| 297 |
=head3 kick (player params -- ) |
| 298 |
|
| 299 |
Invoked when the given player is being kicked, before the kick is |
| 300 |
executed. |
| 301 |
|
| 302 |
=head3 load (player -- ) |
| 303 |
|
| 304 |
Invoked whenever after a player has been loaded from disk, but before |
| 305 |
actual activation/login. |
| 306 |
|
| 307 |
=head3 save (player -- ) |
| 308 |
|
| 309 |
Invoked just before a player gets serialised. |
| 310 |
|
| 311 |
=head3 save_done (player -- ) |
| 312 |
|
| 313 |
Invoked just after a player was serialised. |
| 314 |
|
| 315 |
=head3 connect (player -- ) |
| 316 |
|
| 317 |
Invoked just after the player object was connected to a client. |
| 318 |
|
| 319 |
=head3 disconnect (player -- ) |
| 320 |
|
| 321 |
Invoked just before the player gets disconnected from the client. |
| 322 |
|
| 323 |
=head3 login (player) |
| 324 |
|
| 325 |
Invoked whenever a player logs in. |
| 326 |
|
| 327 |
=head3 logout (player cleanly -- ) |
| 328 |
|
| 329 |
Invoked whenever a player logs out, gets disconnected etc. |
| 330 |
|
| 331 |
=head3 death (player) |
| 332 |
|
| 333 |
Invoked whenever a player dies, before the death actually gets processed. |
| 334 |
|
| 335 |
=head3 map_change (player newmap x y -- ) |
| 336 |
|
| 337 |
Invoked before a player moves from one map to another, can override the movement. |
| 338 |
|
| 339 |
=head3 region_change (player newregion oldregion -- ) |
| 340 |
|
| 341 |
Invoked when a player entered a new region. Cannot be overriden. |
| 342 |
|
| 343 |
=head3 command (player command args -- time) |
| 344 |
|
| 345 |
Execute a user command sent by the client - this is invoked for I<all> |
| 346 |
command,s so should not normally be hooked. |
| 347 |
|
| 348 |
=head3 unknown_command (player command args -- time) |
| 349 |
|
| 350 |
Execute a user command sent by the client that isn't known to the |
| 351 |
server. Programmable plug-ins usually handle this event internally. |
| 352 |
|
| 353 |
=head3 extcmd (player string) |
| 354 |
|
| 355 |
Invoked whenever a client issues the C<extcmd> protocol command. |
| 356 |
Programmable plug-ins usually handle this event internally. |
| 357 |
|
| 358 |
=head3 move (player direction -- ) |
| 359 |
|
| 360 |
Called whenever the player is supposed to move or attack. The handler |
| 361 |
must handle the cases of speed_left or weapon_sp_left being negative, |
| 362 |
fire being on, is responsible for decreaseing the speed_left value |
| 363 |
on successful moves etc. etc.. When overriden, must return a boolean |
| 364 |
indicating wether a move could be effected. |
| 365 |
|
| 366 |
=head3 pray_altar (player altar skill -- ) |
| 367 |
|
| 368 |
Invoked whenever the B<player> prays over an B<altar>, using the given B<skill>. |
| 369 |
|
| 370 |
=head3 tell (player name message -- ) |
| 371 |
|
| 372 |
Invoked whenever the player uses the B<tell> or B<reply> command, before |
| 373 |
it gets processed. |
| 374 |
|
| 375 |
=head3 told (player player message -- ) |
| 376 |
|
| 377 |
Invoked right before a message is being told to a player using B<tell> or |
| 378 |
B<reply>. |
| 379 |
|
| 380 |
=head3 say (player message --) |
| 381 |
|
| 382 |
=head3 chat (player message --) |
| 383 |
|
| 384 |
=head3 shout (player message --) |
| 385 |
|
| 386 |
Invoked whenever the player uses the B<say>, B<chat> or B<shout> command, |
| 387 |
before it gets processed. |
| 388 |
|
| 389 |
=head3 build (player builder map x y checkok --) |
| 390 |
|
| 391 |
Players tries to build using C<builder> at (map+x+y). Is invoked after |
| 392 |
the usual map sanity checks, so the coordinates are valid. The boolean |
| 393 |
C<checkok> is true only if the build code thinks it is "ok" to build at |
| 394 |
that space, and normally you should only build when it is true. |
| 395 |
|
| 396 |
|
| 397 |
=head2 MAP EVENTS |
| 398 |
|
| 399 |
These events are generally dependent on a map and thus all have a map |
| 400 |
as first argument. |
| 401 |
|
| 402 |
=head3 instantiate (map) |
| 403 |
|
| 404 |
Original B<map> has been loaded (e.g. on first use, or after a map |
| 405 |
reset). |
| 406 |
|
| 407 |
=head3 swapin (map) |
| 408 |
|
| 409 |
Invoked when a previously swapped-out temporary B<map> has been loaded again. |
| 410 |
|
| 411 |
=head3 swapout (map) |
| 412 |
|
| 413 |
Invoked after a B<map> has been swapped out to disk. |
| 414 |
|
| 415 |
=head3 reset (map) |
| 416 |
|
| 417 |
Invoked when a B<map> gets reset. |
| 418 |
|
| 419 |
=head3 clean (map) |
| 420 |
|
| 421 |
Invoked when a temporary B<map> gets deleted on-disk. |
| 422 |
|
| 423 |
=head3 enter (map player x y -- ) |
| 424 |
|
| 425 |
Invoked whenever a player tries to enter the B<map>, while he/she is still |
| 426 |
on the old map. Overriding means the player won't be able to enter, and, |
| 427 |
if newmap/x/y are given, will be redirected to that map instead. |
| 428 |
|
| 429 |
=head3 leave (map player -- ) |
| 430 |
|
| 431 |
Invoked whenever a player tries to leave the B<map>. Overriding means the |
| 432 |
player won't be able to leave. |
| 433 |
|
| 434 |
=head3 trigger (map connection state what? who? -- ) |
| 435 |
|
| 436 |
Invoked whenever something activates a B<connection> on the B<map>. If B<state> |
| 437 |
is true the connection was 'state' and if false it is 'released'. |
| 438 |
|
| 439 |
|
| 440 |
=head2 CLIENT EVENTS |
| 441 |
|
| 442 |
These events are very similar to player events, but they are might be |
| 443 |
handled asynchronously as soon as the command reaches the server, even when |
| 444 |
the player hasn't logged in yet (meaning there is no player yet). |
| 445 |
|
| 446 |
=head3 connect (client -- ) |
| 447 |
|
| 448 |
Called as soon as a new connection to the server is established and the |
| 449 |
socket has been configured. |
| 450 |
|
| 451 |
=head3 version (client string -- ) |
| 452 |
|
| 453 |
Called as soon as the version command from the client is received |
| 454 |
(normally the very first command sent). |
| 455 |
|
| 456 |
=head3 setup (client string -- ) |
| 457 |
|
| 458 |
Client sent the setup command to negotiate parameters. Handling is |
| 459 |
mandatory and done by F<login.ext>. |
| 460 |
|
| 461 |
=head3 addme (client -- ) |
| 462 |
|
| 463 |
The client sent an addme, thus ending the initial handshaking. Handling is mandatory |
| 464 |
and done by F<login.ext>. |
| 465 |
|
| 466 |
=head3 reply (client replystring -- ) |
| 467 |
|
| 468 |
Called when the client submits a reply in the ST_CUSTOM state. Usually |
| 469 |
handled internally by language plugins. |
| 470 |
|
| 471 |
=head3 exticmd (client string -- ) |
| 472 |
|
| 473 |
Like C<extcmd>, but can be called before a player has logged in. |
| 474 |
|
| 475 |
Programmable plug-ins usually handle this event internally. |
| 476 |
|
| 477 |
=head3 client_destroy (client -- ) |
| 478 |
|
| 479 |
Invoked when the client gets destroyed. |
| 480 |
|
| 481 |
|
