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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.63 by root, Fri Sep 8 17:41:41 2006 UTC vs.
Revision 1.99 by root, Sat Dec 23 05:25:35 2006 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro;
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18
		19	use IO::AIO 2.3;
		20	use YAML::Syck ();
10	use Time::HiRes;	21	use Time::HiRes;
11	use Event;	22
12	$Event::Eval = 1; # no idea why this is required, but it is	23	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		24
14	use strict;	25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		26	$YAML::Syck::ImplicitUnicode = 1;
		27
		28	$Coro::main->prio (Coro::PRIO_MIN);
		29
		30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		31
		32	our %COMMAND = ();
		33	our %COMMAND_TIME = ();
		34	our %EXTCMD = ();
15		35
16	_init_vars;	36	_init_vars;
17		37
18	our %COMMAND = ();
19	our @EVENT;	38	our @EVENT;
20	our $LIBDIR = maps_directory "perl";	39	our $LIBDIR = datadir . "/ext";
21		40
22	our $TICK = MAX_TIME * 1e-6;	41	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	42	our $TICK_WATCHER;
24	our $NEXT_TICK;	43	our $NEXT_TICK;
		44
		45	our %CFG;
		46
		47	our $UPTIME; $UPTIME ||= time;
		48
		49	#############################################################################
		50
		51	=head2 GLOBAL VARIABLES
		52
		53	=over 4
		54
		55	=item $cf::UPTIME
		56
		57	The timestamp of the server start (so not actually an uptime).
		58
		59	=item $cf::LIBDIR
		60
		61	The perl library directory, where extensions and cf-specific modules can
		62	be found. It will be added to C<@INC> automatically.
		63
		64	=item $cf::TICK
		65
		66	The interval between server ticks, in seconds.
		67
		68	=item %cf::CFG
		69
		70	Configuration for the server, loaded from C</etc/crossfire/config>, or
		71	from wherever your confdir points to.
		72
		73	=back
		74
		75	=cut
25		76
26	BEGIN {	77	BEGIN {
27	*CORE::GLOBAL::warn = sub {	78	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	79	my $msg = join "", @_;
29	$msg .= "\n"	80	$msg .= "\n"
…		…
32	print STDERR "cfperl: $msg";	83	print STDERR "cfperl: $msg";
33	LOG llevError, "cfperl: $msg";	84	LOG llevError, "cfperl: $msg";
34	};	85	};
35	}	86	}
36		87
		88	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		89	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		90	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		91	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		92	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
37	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	93	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
38		94
39	# we bless all objects into (empty) derived classes to force a method lookup	95	# we bless all objects into (empty) derived classes to force a method lookup
40	# within the Safe compartment.	96	# within the Safe compartment.
41	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	97	for my $pkg (qw(
		98	cf::global
		99	cf::object cf::object::player
		100	cf::client cf::player
		101	cf::arch cf::living
		102	cf::map cf::party cf::region
		103	)) {
42	no strict 'refs';	104	no strict 'refs';
43	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	105	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
44	}	106	}
45		107
46	$Event::DIED = sub {	108	$Event::DIED = sub {
…		…
48	};	110	};
49		111
50	my %ext_pkg;	112	my %ext_pkg;
51	my @exts;	113	my @exts;
52	my @hook;	114	my @hook;
53	my %command;
54	my %extcmd;
55		115
56	#############################################################################	116	=head2 UTILITY FUNCTIONS
57	# utility functions	117
		118	=over 4
		119
		120	=cut
58		121
59	use JSON::Syck (); # TODO# replace by JSON::PC once working	122	use JSON::Syck (); # TODO# replace by JSON::PC once working
		123
		124	=item $ref = cf::from_json $json
		125
		126	Converts a JSON string into the corresponding perl data structure.
		127
		128	=cut
60		129
61	sub from_json($) {	130	sub from_json($) {
62	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	131	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
63	JSON::Syck::Load $_[0]	132	JSON::Syck::Load $_[0]
64	}	133	}
65		134
		135	=item $json = cf::to_json $ref
		136
		137	Converts a perl data structure into its JSON representation.
		138
		139	=cut
		140
66	sub to_json($) {	141	sub to_json($) {
67	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	142	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
68	JSON::Syck::Dump $_[0]	143	JSON::Syck::Dump $_[0]
69	}	144	}
70		145
		146	=back
		147
		148	=cut
		149
71	#############################################################################	150	#############################################################################
72	# "new" plug-in system
73		151
74	=head3 EVENTS AND OBJECT ATTACHMENTS	152	=head2 ATTACHABLE OBJECTS
		153
		154	Many objects in crossfire are so-called attachable objects. That means you can
		155	attach callbacks/event handlers (a collection of which is called an "attachment")
		156	to it. All such attachable objects support the following methods.
		157
		158	In the following description, CLASS can be any of C<global>, C<object>
		159	C<player>, C<client> or C<map> (i.e. the attachable objects in
		160	crossfire+).
75		161
76	=over 4	162	=over 4
77		163
78	=item $object->attach ($attachment, key => $value...)
79
80	=item $object->detach ($attachment)
81
82	Attach/detach a pre-registered attachment to an object.
83
84	=item $player->attach ($attachment, key => $value...)
85
86	=item $player->detach ($attachment)
87
88	Attach/detach a pre-registered attachment to a player.
89
90	=item $map->attach ($attachment, key => $value...)	164	=item $attachable->attach ($attachment, key => $value...)
91		165
92	=item $map->detach ($attachment)	166	=item $attachable->detach ($attachment)
93		167
94	Attach/detach a pre-registered attachment to a map.	168	Attach/detach a pre-registered attachment to a specific object and give it
		169	the specified key/value pairs as arguments.
95		170
96	=item $bool = $object->attached ($name)	171	Example, attach a minesweeper attachment to the given object, making it a
		172	10x10 minesweeper game:
97		173
98	=item $bool = $player->attached ($name)	174	$obj->attach (minesweeper => width => 10, height => 10);
99		175
100	=item $bool = $map->attached ($name)	176	=item $bool = $attachable->attached ($name)
101		177
102	Checks wether the named attachment is currently attached to the object.	178	Checks wether the named attachment is currently attached to the object.
103		179
104	=item cf::attach_global ...	180	=item cf::CLASS->attach ...
105		181
106	Attach handlers for global events.	182	=item cf::CLASS->detach ...
107		183
108	This and all following C<attach_*>-functions expect any number of the	184	Define an anonymous attachment and attach it to all objects of the given
109	following handler/hook descriptions:	185	CLASS. See the next function for an explanation of its arguments.
		186
		187	You can attach to global events by using the C<cf::global> class.
		188
		189	Example, log all player logins:
		190
		191	cf::player->attach (
		192	on_login => sub {
		193	my ($pl) = @_;
		194	...
		195	},
		196	);
		197
		198	Example, attach to the jeweler skill:
		199
		200	cf::object->attach (
		201	type => cf::SKILL,
		202	subtype => cf::SK_JEWELER,
		203	on_use_skill => sub {
		204	my ($sk, $ob, $part, $dir, $msg) = @_;
		205	...
		206	},
		207	);
		208
		209	=item cf::CLASS::attachment $name, ...
		210
		211	Register an attachment by C<$name> through which attachable objects of the
		212	given CLASS can refer to this attachment.
		213
		214	Some classes such as crossfire maps and objects can specify attachments
		215	that are attached at load/instantiate time, thus the need for a name.
		216
		217	These calls expect any number of the following handler/hook descriptions:
110		218
111	=over 4	219	=over 4
112		220
113	=item prio => $number	221	=item prio => $number
114		222
…		…
116	by another C<prio> setting). Lower priority handlers get executed	224	by another C<prio> setting). Lower priority handlers get executed
117	earlier. The default priority is C<0>, and many built-in handlers are	225	earlier. The default priority is C<0>, and many built-in handlers are
118	registered at priority C<-1000>, so lower priorities should not be used	226	registered at priority C<-1000>, so lower priorities should not be used
119	unless you know what you are doing.	227	unless you know what you are doing.
120		228
		229	=item type => $type
		230
		231	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		232	given type of objects only (the additional parameter C<subtype> can be
		233	used to further limit to the given subtype).
		234
121	=item on_I<event> => \&cb	235	=item on_I<event> => \&cb
122		236
123	Call the given code reference whenever the named event happens (event is	237	Call the given code reference whenever the named event happens (event is
124	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	238	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
125	handlers are recognised generally depends on the type of object these	239	handlers are recognised generally depends on the type of object these
…		…
134	package and register them. Only handlers for eevents supported by the	248	package and register them. Only handlers for eevents supported by the
135	object/class are recognised.	249	object/class are recognised.
136		250
137	=back	251	=back
138		252
139	=item cf::attach_to_type $object_type, $subtype, ...	253	Example, define an attachment called "sockpuppet" that calls the given
		254	event handler when a monster attacks:
140		255
141	Attach handlers for a specific object type (e.g. TRANSPORT) and	256	cf::object::attachment sockpuppet =>
142	subtype. If C<$subtype> is zero or undef, matches all objects of the given	257	on_skill_attack => sub {
143	type.	258	my ($self, $victim) = @_;
144		259	...
145	=item cf::attach_to_objects ...
146
147	Attach handlers to all objects. Do not use this except for debugging or
148	very rare events, as handlers are (obviously) called for I<all> objects in
149	the game.
150
151	=item cf::attach_to_players ...
152
153	Attach handlers to all players.
154
155	=item cf::attach_to_maps ...
156
157	Attach handlers to all maps.
158
159	=item cf:register_attachment $name, ...
160
161	Register an attachment by name through which objects can refer to this
162	attachment.
163
164	=item cf:register_player_attachment $name, ...
165
166	Register an attachment by name through which players can refer to this
167	attachment.
168
169	=item cf:register_map_attachment $name, ...
170
171	Register an attachment by name through which maps can refer to this
172	attachment.
173
174	=cut
175
176	# the following variables are defined in .xs and must not be re-created
177	our @CB_GLOBAL = (); # registry for all global events
178	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
179	our @CB_PLAYER = ();
180	our @CB_TYPE = (); # registry for type (cf-object class) based events
181	our @CB_MAP = ();
182
183	my %attachment;
184
185	sub _attach_cb($\%$$$) {
186	my ($registry, $undo, $event, $prio, $cb) = @_;
187
188	use sort 'stable';
189
190	$cb = [$prio, $cb];
191
192	@{$registry->[$event]} = sort
193	{ $a->[0] cmp $b->[0] }
194	@{$registry->[$event] || []}, $cb;
195
196	push @{$undo->{cb}}, [$event, $cb];
197	}
198
199	# attach handles attaching event callbacks
200	# the only thing the caller has to do is pass the correct
201	# registry (== where the callback attaches to).
202	sub _attach(\@$@) {
203	my ($registry, $klass, @arg) = @_;
204
205	my $prio = 0;
206
207	my %undo = (
208	registry => $registry,
209	cb => [],
210	);
211
212	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
213
214	while (@arg) {
215	my $type = shift @arg;
216
217	if ($type eq "prio") {
218	$prio = shift @arg;
219
220	} elsif ($type eq "package") {
221	my $pkg = shift @arg;
222
223	while (my ($name, $id) = each %cb_id) {
224	if (my $cb = $pkg->can ($name)) {
225	_attach_cb $registry, %undo, $id, $prio, $cb;
226	}
227	}	260	}
228
229	} elsif (exists $cb_id{$type}) {
230	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
231
232	} elsif (ref $type) {
233	warn "attaching objects not supported, ignoring.\n";
234
235	} else {
236	shift @arg;
237	warn "attach argument '$type' not supported, ignoring.\n";
238	}
239	}
240
241	\%undo
242	}
243
244	sub _attach_attachment {
245	my ($obj, $name, %arg) = @_;
246
247	return if exists $obj->{_attachment}{$name};
248
249	my $res;
250
251	if (my $attach = $attachment{$name}) {
252	my $registry = $obj->registry;
253
254	for (@$attach) {
255	my ($klass, @attach) = @$_;
256	$res = _attach @$registry, $klass, @attach;
257	}
258
259	$obj->{$name} = \%arg;
260	} else {
261	warn "object uses attachment '$name' that is not available, postponing.\n";
262	}
263
264	$obj->{_attachment}{$name} = undef;
265
266	$res->{attachment} = $name;
267	$res
268	}
269
270	*cf::object::attach =
271	*cf::player::attach =
272	*cf::map::attach = sub {
273	my ($obj, $name, %arg) = @_;
274
275	_attach_attachment $obj, $name, %arg;
276	};
277
278	# all those should be optimised
279	*cf::object::detach =
280	*cf::player::detach =
281	*cf::map::detach = sub {
282	my ($obj, $name) = @_;
283
284	delete $obj->{_attachment}{$name};
285	reattach ($obj);
286	};
287
288	*cf::object::attached =
289	*cf::player::attached =
290	*cf::map::attached = sub {
291	my ($obj, $name) = @_;
292
293	exists $obj->{_attachment}{$name}
294	};
295
296	sub attach_global {
297	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
298	}
299
300	sub attach_to_type {
301	my $type = shift;
302	my $subtype = shift;
303
304	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
305	}
306
307	sub attach_to_objects {
308	_attach @CB_OBJECT, KLASS_OBJECT, @_
309	}
310
311	sub attach_to_players {
312	_attach @CB_PLAYER, KLASS_PLAYER, @_
313	}
314
315	sub attach_to_maps {
316	_attach @CB_MAP, KLASS_MAP, @_
317	}
318
319	sub register_attachment {
320	my $name = shift;
321
322	$attachment{$name} = [[KLASS_OBJECT, @_]];
323	}
324
325	sub register_player_attachment {
326	my $name = shift;
327
328	$attachment{$name} = [[KLASS_PLAYER, @_]];
329	}
330
331	sub register_map_attachment {
332	my $name = shift;
333
334	$attachment{$name} = [[KLASS_MAP, @_]];
335	}
336
337	our $override;
338	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
339
340	sub override {
341	$override = 1;
342	@invoke_results = ();
343	}
344
345	sub do_invoke {
346	my $event = shift;
347	my $callbacks = shift;
348
349	@invoke_results = ();
350
351	local $override;
352
353	for (@$callbacks) {
354	eval { &{$_->[1]} };
355
356	if ($@) {
357	warn "$@";
358	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";
359	override;
360	}
361
362	return 1 if $override;
363	}
364
365	0	261	}
366	}
367		262
368	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	263	=item $attachable->valid
369
370	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
371
372	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
373
374	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
375
376	Generate a global/object/player/map-specific event with the given arguments.
377
378	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
379	removed in future versions), and there is no public API to access override
380	results (if you must, access C<@cf::invoke_results> directly).
381
382	=back
383
384	=head2 methods valid for all pointers
385
386	=over 4
387
388	=item $object->valid
389
390	=item $player->valid
391
392	=item $map->valid
393		264
394	Just because you have a perl object does not mean that the corresponding	265	Just because you have a perl object does not mean that the corresponding
395	C-level object still exists. If you try to access an object that has no	266	C-level object still exists. If you try to access an object that has no
396	valid C counterpart anymore you get an exception at runtime. This method	267	valid C counterpart anymore you get an exception at runtime. This method
397	can be used to test for existence of the C object part without causing an	268	can be used to test for existence of the C object part without causing an
398	exception.	269	exception.
399		270
		271	=cut
		272
		273	# the following variables are defined in .xs and must not be re-created
		274	our @CB_GLOBAL = (); # registry for all global events
		275	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		276	our @CB_PLAYER = ();
		277	our @CB_CLIENT = ();
		278	our @CB_TYPE = (); # registry for type (cf-object class) based events
		279	our @CB_MAP = ();
		280
		281	my %attachment;
		282
		283	sub _attach_cb($$$$) {
		284	my ($registry, $event, $prio, $cb) = @_;
		285
		286	use sort 'stable';
		287
		288	$cb = [$prio, $cb];
		289
		290	@{$registry->[$event]} = sort
		291	{ $a->[0] cmp $b->[0] }
		292	@{$registry->[$event] || []}, $cb;
		293	}
		294
		295	# attach handles attaching event callbacks
		296	# the only thing the caller has to do is pass the correct
		297	# registry (== where the callback attaches to).
		298	sub _attach {
		299	my ($registry, $klass, @arg) = @_;
		300
		301	my $object_type;
		302	my $prio = 0;
		303	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		304
		305	while (@arg) {
		306	my $type = shift @arg;
		307
		308	if ($type eq "prio") {
		309	$prio = shift @arg;
		310
		311	} elsif ($type eq "type") {
		312	$object_type = shift @arg;
		313	$registry = $CB_TYPE[$object_type] ||= [];
		314
		315	} elsif ($type eq "subtype") {
		316	defined $object_type or Carp::croak "subtype specified without type";
		317	my $object_subtype = shift @arg;
		318	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		319
		320	} elsif ($type eq "package") {
		321	my $pkg = shift @arg;
		322
		323	while (my ($name, $id) = each %cb_id) {
		324	if (my $cb = $pkg->can ($name)) {
		325	_attach_cb $registry, $id, $prio, $cb;
		326	}
		327	}
		328
		329	} elsif (exists $cb_id{$type}) {
		330	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		331
		332	} elsif (ref $type) {
		333	warn "attaching objects not supported, ignoring.\n";
		334
		335	} else {
		336	shift @arg;
		337	warn "attach argument '$type' not supported, ignoring.\n";
		338	}
		339	}
		340	}
		341
		342	sub _object_attach {
		343	my ($obj, $name, %arg) = @_;
		344
		345	return if exists $obj->{_attachment}{$name};
		346
		347	if (my $attach = $attachment{$name}) {
		348	my $registry = $obj->registry;
		349
		350	for (@$attach) {
		351	my ($klass, @attach) = @$_;
		352	_attach $registry, $klass, @attach;
		353	}
		354
		355	$obj->{$name} = \%arg;
		356	} else {
		357	warn "object uses attachment '$name' that is not available, postponing.\n";
		358	}
		359
		360	$obj->{_attachment}{$name} = undef;
		361	}
		362
		363	sub cf::attachable::attach {
		364	if (ref $_[0]) {
		365	_object_attach @_;
		366	} else {
		367	_attach shift->_attach_registry, @_;
		368	}
		369	};
		370
		371	# all those should be optimised
		372	sub cf::attachable::detach {
		373	my ($obj, $name) = @_;
		374
		375	if (ref $obj) {
		376	delete $obj->{_attachment}{$name};
		377	reattach ($obj);
		378	} else {
		379	Carp::croak "cannot, currently, detach class attachments";
		380	}
		381	};
		382
		383	sub cf::attachable::attached {
		384	my ($obj, $name) = @_;
		385
		386	exists $obj->{_attachment}{$name}
		387	}
		388
		389	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
		390	eval "#line " . __LINE__ . " 'cf.pm'
		391	sub cf::\L$klass\E::_attach_registry {
		392	(\\\@CB_$klass, KLASS_$klass)
		393	}
		394
		395	sub cf::\L$klass\E::attachment {
		396	my \$name = shift;
		397
		398	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		399	}
		400	";
		401	die if $@;
		402	}
		403
		404	our $override;
		405	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		406
		407	sub override {
		408	$override = 1;
		409	@invoke_results = ();
		410	}
		411
		412	sub do_invoke {
		413	my $event = shift;
		414	my $callbacks = shift;
		415
		416	@invoke_results = ();
		417
		418	local $override;
		419
		420	for (@$callbacks) {
		421	eval { &{$_->[1]} };
		422
		423	if ($@) {
		424	warn "$@";
		425	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		426	override;
		427	}
		428
		429	return 1 if $override;
		430	}
		431
		432	0
		433	}
		434
		435	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		436
		437	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		438
		439	Generate an object-specific event with the given arguments.
		440
		441	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		442	removed in future versions), and there is no public API to access override
		443	results (if you must, access C<@cf::invoke_results> directly).
		444
400	=back	445	=back
401		446
402	=cut	447	=cut
403
404	*cf::object::valid =
405	*cf::player::valid =
406	*cf::map::valid = \&cf::_valid;
407		448
408	#############################################################################	449	#############################################################################
409	# object support	450	# object support
410		451
411	sub instantiate {	452	sub instantiate {
…		…
431		472
432	for my $name (keys %{ $obj->{_attachment} || {} }) {	473	for my $name (keys %{ $obj->{_attachment} || {} }) {
433	if (my $attach = $attachment{$name}) {	474	if (my $attach = $attachment{$name}) {
434	for (@$attach) {	475	for (@$attach) {
435	my ($klass, @attach) = @$_;	476	my ($klass, @attach) = @$_;
436	_attach @$registry, $klass, @attach;	477	_attach $registry, $klass, @attach;
437	}	478	}
438	} else {	479	} else {
439	warn "object uses attachment '$name' that is not available, postponing.\n";	480	warn "object uses attachment '$name' that is not available, postponing.\n";
440	}	481	}
441	}	482	}
…		…
470	unlink $filename;	511	unlink $filename;
471	unlink "$filename.pst";	512	unlink "$filename.pst";
472	}	513	}
473	}	514	}
474		515
		516	sub object_freezer_as_string {
		517	my ($rdata, $objs) = @_;
		518
		519	use Data::Dumper;
		520
		521	$$rdata . Dumper $objs
		522	}
		523
475	sub object_thawer_load {	524	sub object_thawer_load {
476	my ($filename) = @_;	525	my ($filename) = @_;
477		526
478	local $/;	527	local $/;
479		528
…		…
489	}	538	}
490		539
491	()	540	()
492	}	541	}
493		542
494	attach_to_objects	543	cf::object->attach (
495	prio => -1000000,	544	prio => -1000000,
496	on_clone => sub {	545	on_clone => sub {
497	my ($src, $dst) = @_;	546	my ($src, $dst) = @_;
498		547
499	@{$dst->registry} = @{$src->registry};	548	@{$dst->registry} = @{$src->registry};
…		…
501	%$dst = %$src;	550	%$dst = %$src;
502		551
503	%{$dst->{_attachment}} = %{$src->{_attachment}}	552	%{$dst->{_attachment}} = %{$src->{_attachment}}
504	if exists $src->{_attachment};	553	if exists $src->{_attachment};
505	},	554	},
506	;	555	);
507		556
508	#############################################################################	557	#############################################################################
509	# old plug-in events	558	# command handling &c
510		559
511	sub inject_event {	560	=item cf::register_command $name => \&callback($ob,$args);
512	my $extension = shift;
513	my $event_code = shift;
514		561
515	my $cb = $hook[$event_code]{$extension}	562	Register a callback for execution when the client sends the user command
516	or return;	563	$name.
517		564
518	&$cb	565	=cut
519	}
520
521	sub inject_global_event {
522	my $event = shift;
523
524	my $cb = $hook[$event]
525	or return;
526
527	List::Util::max map &$_, values %$cb
528	}
529
530	sub inject_command {
531	my ($name, $obj, $params) = @_;
532
533	for my $cmd (@{ $command{$name} }) {
534	$cmd->[1]->($obj, $params);
535	}
536
537	-1
538	}
539		566
540	sub register_command {	567	sub register_command {
541	my ($name, $time, $cb) = @_;	568	my ($name, $cb) = @_;
542		569
543	my $caller = caller;	570	my $caller = caller;
544	#warn "registering command '$name/$time' to '$caller'";	571	#warn "registering command '$name/$time' to '$caller'";
545		572
546	push @{ $command{$name} }, [$time, $cb, $caller];	573	push @{ $COMMAND{$name} }, [$caller, $cb];
547	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
548	}	574	}
		575
		576	=item cf::register_extcmd $name => \&callback($pl,$packet);
		577
		578	Register a callbackf ro execution when the client sends an extcmd packet.
		579
		580	If the callback returns something, it is sent back as if reply was being
		581	called.
		582
		583	=cut
549		584
550	sub register_extcmd {	585	sub register_extcmd {
551	my ($name, $cb) = @_;	586	my ($name, $cb) = @_;
552		587
553	my $caller = caller;	588	my $caller = caller;
554	#warn "registering extcmd '$name' to '$caller'";	589	#warn "registering extcmd '$name' to '$caller'";
555		590
556	$extcmd{$name} = [$cb, $caller];	591	$EXTCMD{$name} = [$cb, $caller];
557	}	592	}
		593
		594	cf::player->attach (
		595	on_command => sub {
		596	my ($pl, $name, $params) = @_;
		597
		598	my $cb = $COMMAND{$name}
		599	or return;
		600
		601	for my $cmd (@$cb) {
		602	$cmd->[1]->($pl->ob, $params);
		603	}
		604
		605	cf::override;
		606	},
		607	on_extcmd => sub {
		608	my ($pl, $buf) = @_;
		609
		610	my $msg = eval { from_json $buf };
		611
		612	if (ref $msg) {
		613	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		614	if (my %reply = $cb->[0]->($pl, $msg)) {
		615	$pl->ext_reply ($msg->{msgid}, %reply);
		616	}
		617	}
		618	} else {
		619	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		620	}
		621
		622	cf::override;
		623	},
		624	);
558		625
559	sub register {	626	sub register {
560	my ($base, $pkg) = @_;	627	my ($base, $pkg) = @_;
561		628
562	#TODO	629	#TODO
…		…
581	. "#line 1 \"$path\"\n{\n"	648	. "#line 1 \"$path\"\n{\n"
582	. (do { local $/; <$fh> })	649	. (do { local $/; <$fh> })
583	. "\n};\n1";	650	. "\n};\n1";
584		651
585	eval $source	652	eval $source
586	or die "$path: $@";	653	or die $@ ? "$path: $@\n"
		654	: "extension disabled.\n";
587		655
588	push @exts, $pkg;	656	push @exts, $pkg;
589	$ext_pkg{$base} = $pkg;	657	$ext_pkg{$base} = $pkg;
590		658
591	# no strict 'refs';	659	# no strict 'refs';
…		…
604	# for my $idx (0 .. $#PLUGIN_EVENT) {	672	# for my $idx (0 .. $#PLUGIN_EVENT) {
605	# delete $hook[$idx]{$pkg};	673	# delete $hook[$idx]{$pkg};
606	# }	674	# }
607		675
608	# remove commands	676	# remove commands
609	for my $name (keys %command) {	677	for my $name (keys %COMMAND) {
610	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	678	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
611		679
612	if (@cb) {	680	if (@cb) {
613	$command{$name} = \@cb;	681	$COMMAND{$name} = \@cb;
614	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
615	} else {	682	} else {
616	delete $command{$name};
617	delete $COMMAND{"$name\000"};	683	delete $COMMAND{$name};
618	}	684	}
619	}	685	}
620		686
621	# remove extcmds	687	# remove extcmds
622	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	688	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
623	delete $extcmd{$name};	689	delete $EXTCMD{$name};
624	}	690	}
625		691
626	if (my $cb = $pkg->can ("unload")) {	692	if (my $cb = $pkg->can ("unload")) {
627	eval {	693	eval {
628	$cb->($pkg);	694	$cb->($pkg);
…		…
632		698
633	Symbol::delete_package $pkg;	699	Symbol::delete_package $pkg;
634	}	700	}
635		701
636	sub load_extensions {	702	sub load_extensions {
637	my $LIBDIR = maps_directory "perl";
638
639	for my $ext (<$LIBDIR/*.ext>) {	703	for my $ext (<$LIBDIR/*.ext>) {
640	next unless -r $ext;	704	next unless -r $ext;
641	eval {	705	eval {
642	load_extension $ext;	706	load_extension $ext;
643	1	707	1
644	} or warn "$ext not loaded: $@";	708	} or warn "$ext not loaded: $@";
645	}	709	}
646	}	710	}
647		711
648	sub _perl_reload(&) {
649	my ($msg) = @_;
650
651	$msg->("reloading...");
652
653	eval {
654	# 1. cancel all watchers
655	$_->cancel for Event::all_watchers;
656
657	# 2. unload all extensions
658	for (@exts) {
659	$msg->("unloading <$_>");
660	unload_extension $_;
661	}
662
663	# 3. unload all modules loaded from $LIBDIR
664	while (my ($k, $v) = each %INC) {
665	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
666
667	$msg->("removing <$k>");
668	delete $INC{$k};
669
670	$k =~ s/\.pm$//;
671	$k =~ s/\//::/g;
672
673	if (my $cb = $k->can ("unload_module")) {
674	$cb->();
675	}
676
677	Symbol::delete_package $k;
678	}
679
680	# 4. get rid of safe::, as good as possible
681	Symbol::delete_package "safe::$_"
682	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
683
684	# 5. remove register_script_function callbacks
685	# TODO
686
687	# 6. unload cf.pm "a bit"
688	delete $INC{"cf.pm"};
689
690	# don't, removes xs symbols, too,
691	# and global variables created in xs
692	#Symbol::delete_package __PACKAGE__;
693
694	# 7. reload cf.pm
695	$msg->("reloading cf.pm");
696	require cf;
697
698	$msg->("load extensions");
699	cf::load_extensions;
700
701	$msg->("reattach");
702	_global_reattach;
703	};
704	$msg->($@) if $@;
705
706	$msg->("reloaded");
707	};
708
709	sub perl_reload() {
710	_perl_reload {
711	warn $_[0];
712	print "$_[0]\n";
713	};
714	}
715
716	register_command "perl-reload", 0, sub {
717	my ($who, $arg) = @_;
718
719	if ($who->flag (FLAG_WIZ)) {
720	_perl_reload {
721	warn $_[0];
722	$who->message ($_[0]);
723	};
724	}
725	};
726
727	#############################################################################
728	# extcmd framework, basically convert ext <msg>
729	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
730
731	attach_to_players
732	on_extcmd => sub {
733	my ($pl, $buf) = @_;
734
735	my $msg = eval { from_json $buf };
736
737	if (ref $msg) {
738	if (my $cb = $extcmd{$msg->{msgtype}}) {
739	if (my %reply = $cb->[0]->($pl, $msg)) {
740	$pl->ext_reply ($msg->{msgid}, %reply);
741	}
742	}
743	} else {
744	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
745	}
746
747	cf::override;
748	},
749	;
750
751	#############################################################################	712	#############################################################################
752	# load/save/clean perl data associated with a map	713	# load/save/clean perl data associated with a map
753		714
754	*cf::mapsupport::on_clean = sub {	715	*cf::mapsupport::on_clean = sub {
755	my ($map) = @_;	716	my ($map) = @_;
…		…
758	defined $path or return;	719	defined $path or return;
759		720
760	unlink "$path.pst";	721	unlink "$path.pst";
761	};	722	};
762		723
763	attach_to_maps prio => -10000, package => cf::mapsupport::;	724	cf::map->attach (prio => -10000, package => cf::mapsupport::);
764		725
765	#############################################################################	726	#############################################################################
766	# load/save perl data associated with player->ob objects	727	# load/save perl data associated with player->ob objects
767		728
768	sub all_objects(@) {	729	sub all_objects(@) {
769	@_, map all_objects ($_->inv), @_	730	@_, map all_objects ($_->inv), @_
770	}	731	}
771		732
772	# TODO: compatibility cruft, remove when no longer needed	733	# TODO: compatibility cruft, remove when no longer needed
773	attach_to_players	734	cf::player->attach (
774	on_load => sub {	735	on_load => sub {
775	my ($pl, $path) = @_;	736	my ($pl, $path) = @_;
776		737
777	for my $o (all_objects $pl->ob) {	738	for my $o (all_objects $pl->ob) {
778	if (my $value = $o->get_ob_key_value ("_perl_data")) {	739	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
780		741
781	%$o = %{ Storable::thaw pack "H*", $value };	742	%$o = %{ Storable::thaw pack "H*", $value };
782	}	743	}
783	}	744	}
784	},	745	},
785	;	746	);
786		747
787	#############################################################################	748	#############################################################################
788	# core extensions - in perl	749
		750	=head2 CORE EXTENSIONS
		751
		752	Functions and methods that extend core crossfire objects.
		753
		754	=head3 cf::player
		755
		756	=over 4
789		757
790	=item cf::player::exists $login	758	=item cf::player::exists $login
791		759
792	Returns true when the given account exists.	760	Returns true when the given account exists.
793		761
…		…
796	sub cf::player::exists($) {	764	sub cf::player::exists($) {
797	cf::player::find $_[0]	765	cf::player::find $_[0]
798	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	766	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
799	}	767	}
800		768
		769	=item $player->ext_reply ($msgid, $msgtype, %msg)
		770
		771	Sends an ext reply to the player.
		772
		773	=cut
		774
		775	sub cf::player::ext_reply($$$%) {
		776	my ($self, $id, %msg) = @_;
		777
		778	$msg{msgid} = $id;
		779
		780	$self->send ("ext " . to_json \%msg);
		781	}
		782
		783	=back
		784
		785	=head3 cf::object::player
		786
		787	=over 4
		788
801	=item $player->reply ($npc, $msg[, $flags])	789	=item $player_object->reply ($npc, $msg[, $flags])
802		790
803	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
804	can be C<undef>. Does the right thing when the player is currently in a	792	can be C<undef>. Does the right thing when the player is currently in a
805	dialogue with the given NPC character.	793	dialogue with the given NPC character.
806		794
807	=cut	795	=cut
808		796
809	# rough implementation of a future "reply" method that works	797	# rough implementation of a future "reply" method that works
810	# with dialog boxes.	798	# with dialog boxes.
		799	#TODO: the first argument must go, split into a $npc->reply_to ( method
811	sub cf::object::player::reply($$$;$) {	800	sub cf::object::player::reply($$$;$) {
812	my ($self, $npc, $msg, $flags) = @_;	801	my ($self, $npc, $msg, $flags) = @_;
813		802
814	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	803	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
815		804
…		…
819	$msg = $npc->name . " says: $msg" if $npc;	808	$msg = $npc->name . " says: $msg" if $npc;
820	$self->message ($msg, $flags);	809	$self->message ($msg, $flags);
821	}	810	}
822	}	811	}
823		812
824	=item $player->ext_reply ($msgid, $msgtype, %msg)	813	=item $player_object->may ("access")
825		814
826	Sends an ext reply to the player.	815	Returns wether the given player is authorized to access resource "access"
		816	(e.g. "command_wizcast").
827		817
828	=cut	818	=cut
829		819
830	sub cf::player::ext_reply($$$%) {	820	sub cf::object::player::may {
		821	my ($self, $access) = @_;
		822
		823	$self->flag (cf::FLAG_WIZ) ||
		824	(ref $cf::CFG{"may_$access"}
		825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		826	: $cf::CFG{"may_$access"})
		827	}
		828
		829	=head3 cf::client
		830
		831	=over 4
		832
		833	=item $client->send_drawinfo ($text, $flags)
		834
		835	Sends a drawinfo packet to the client. Circumvents output buffering so
		836	should not be used under normal circumstances.
		837
		838	=cut
		839
		840	sub cf::client::send_drawinfo {
		841	my ($self, $text, $flags) = @_;
		842
		843	utf8::encode $text;
		844	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		845	}
		846
		847
		848	=item $success = $client->query ($flags, "text", \&cb)
		849
		850	Queues a query to the client, calling the given callback with
		851	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		852	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		853
		854	Queries can fail, so check the return code. Or don't, as queries will become
		855	reliable at some point in the future.
		856
		857	=cut
		858
		859	sub cf::client::query {
		860	my ($self, $flags, $text, $cb) = @_;
		861
		862	return unless $self->state == ST_PLAYING
		863	|| $self->state == ST_SETUP
		864	|| $self->state == ST_CUSTOM;
		865
		866	$self->state (ST_CUSTOM);
		867
		868	utf8::encode $text;
		869	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		870
		871	$self->send_packet ($self->{query_queue}[0][0])
		872	if @{ $self->{query_queue} } == 1;
		873	}
		874
		875	cf::client->attach (
		876	on_reply => sub {
		877	my ($ns, $msg) = @_;
		878
		879	# this weird shuffling is so that direct followup queries
		880	# get handled first
		881	my $queue = delete $ns->{query_queue};
		882
		883	(shift @$queue)->[1]->($msg);
		884
		885	push @{ $ns->{query_queue} }, @$queue;
		886
		887	if (@{ $ns->{query_queue} } == @$queue) {
		888	if (@$queue) {
		889	$ns->send_packet ($ns->{query_queue}[0][0]);
		890	} else {
		891	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		892	}
		893	}
		894	},
		895	);
		896
		897	=item $client->coro (\&cb)
		898
		899	Create a new coroutine, running the specified callback. The coroutine will
		900	be automatically cancelled when the client gets destroyed (e.g. on logout,
		901	or loss of connection).
		902
		903	=cut
		904
		905	sub cf::client::coro {
831	my ($self, $id, %msg) = @_;	906	my ($self, $cb) = @_;
832		907
833	$msg{msgid} = $id;	908	my $coro; $coro = async {
		909	eval {
		910	$cb->();
		911	};
		912	warn $@ if $@;
		913	delete $self->{_coro}{$coro+0};
		914	};
834		915
835	$self->send ("ext " . to_json \%msg);	916	$self->{_coro}{$coro+0} = $coro;
836	}	917	}
837		918
838	#############################################################################	919	cf::client->attach (
839	# map scripting support	920	on_destroy => sub {
		921	my ($ns) = @_;
		922
		923	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		924	},
		925	);
		926
		927	=back
		928
		929
		930	=head2 SAFE SCRIPTING
		931
		932	Functions that provide a safe environment to compile and execute
		933	snippets of perl code without them endangering the safety of the server
		934	itself. Looping constructs, I/O operators and other built-in functionality
		935	is not available in the safe scripting environment, and the number of
		936	functions and methods that can be called is greatly reduced.
		937
		938	=cut
840		939
841	our $safe = new Safe "safe";	940	our $safe = new Safe "safe";
842	our $safe_hole = new Safe::Hole;	941	our $safe_hole = new Safe::Hole;
843		942
844	$SIG{FPE} = 'IGNORE';	943	$SIG{FPE} = 'IGNORE';
845		944
846	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	945	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
847		946
848	# here we export the classes and methods available to script code	947	# here we export the classes and methods available to script code
849		948
		949	=pod
		950
		951	The following fucntions and emthods are available within a safe environment:
		952
		953	cf::object contr pay_amount pay_player map
		954	cf::object::player player
		955	cf::player peaceful
		956	cf::map trigger
		957
		958	=cut
		959
850	for (	960	for (
851	["cf::object" => qw(contr pay_amount pay_player)],	961	["cf::object" => qw(contr pay_amount pay_player map)],
852	["cf::object::player" => qw(player)],	962	["cf::object::player" => qw(player)],
853	["cf::player" => qw(peaceful)],	963	["cf::player" => qw(peaceful)],
		964	["cf::map" => qw(trigger)],
854	) {	965	) {
855	no strict 'refs';	966	no strict 'refs';
856	my ($pkg, @funs) = @$_;	967	my ($pkg, @funs) = @$_;
857	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	968	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
858	for @funs;	969	for @funs;
859	}	970	}
		971
		972	=over 4
		973
		974	=item @retval = safe_eval $code, [var => value, ...]
		975
		976	Compiled and executes the given perl code snippet. additional var/value
		977	pairs result in temporary local (my) scalar variables of the given name
		978	that are available in the code snippet. Example:
		979
		980	my $five = safe_eval '$first + $second', first => 1, second => 4;
		981
		982	=cut
860		983
861	sub safe_eval($;@) {	984	sub safe_eval($;@) {
862	my ($code, %vars) = @_;	985	my ($code, %vars) = @_;
863		986
864	my $qcode = $code;	987	my $qcode = $code;
…		…
887	}	1010	}
888		1011
889	wantarray ? @res : $res[0]	1012	wantarray ? @res : $res[0]
890	}	1013	}
891		1014
		1015	=item cf::register_script_function $function => $cb
		1016
		1017	Register a function that can be called from within map/npc scripts. The
		1018	function should be reasonably secure and should be put into a package name
		1019	like the extension.
		1020
		1021	Example: register a function that gets called whenever a map script calls
		1022	C<rent::overview>, as used by the C<rent> extension.
		1023
		1024	cf::register_script_function "rent::overview" => sub {
		1025	...
		1026	};
		1027
		1028	=cut
		1029
892	sub register_script_function {	1030	sub register_script_function {
893	my ($fun, $cb) = @_;	1031	my ($fun, $cb) = @_;
894		1032
895	no strict 'refs';	1033	no strict 'refs';
896	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1034	*{"safe::$fun"} = $safe_hole->wrap ($cb);
897	}	1035	}
898		1036
		1037	=back
		1038
		1039	=cut
		1040
		1041	#############################################################################
		1042
		1043	=head2 EXTENSION DATABASE SUPPORT
		1044
		1045	Crossfire maintains a very simple database for extension use. It can
		1046	currently store anything that can be serialised using Storable, which
		1047	excludes objects.
		1048
		1049	The parameter C<$family> should best start with the name of the extension
		1050	using it, it should be unique.
		1051
		1052	=over 4
		1053
		1054	=item $hashref = cf::db_get $family
		1055
		1056	Return a hashref for use by the extension C<$family>, which can be
		1057	modified. After modifications, you have to call C<cf::db_dirty> or
		1058	C<cf::db_sync>.
		1059
		1060	=item $value = cf::db_get $family => $key
		1061
		1062	Returns a single value from the database
		1063
		1064	=item cf::db_put $family => $hashref
		1065
		1066	Stores the given family hashref into the database. Updates are delayed, if
		1067	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1068
		1069	=item cf::db_put $family => $key => $value
		1070
		1071	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1072	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1073
		1074	=item cf::db_dirty
		1075
		1076	Marks the database as dirty, to be updated at a later time.
		1077
		1078	=item cf::db_sync
		1079
		1080	Immediately write the database to disk I<if it is dirty>.
		1081
		1082	=cut
		1083
		1084	our $DB;
		1085
		1086	{
		1087	my $path = cf::localdir . "/database.pst";
		1088
		1089	sub db_load() {
		1090	warn "loading database $path\n";#d# remove later
		1091	$DB = stat $path ? Storable::retrieve $path : { };
		1092	}
		1093
		1094	my $pid;
		1095
		1096	sub db_save() {
		1097	warn "saving database $path\n";#d# remove later
		1098	waitpid $pid, 0 if $pid;
		1099	if (0 == ($pid = fork)) {
		1100	$DB->{_meta}{version} = 1;
		1101	Storable::nstore $DB, "$path~";
		1102	rename "$path~", $path;
		1103	cf::_exit 0 if defined $pid;
		1104	}
		1105	}
		1106
		1107	my $dirty;
		1108
		1109	sub db_sync() {
		1110	db_save if $dirty;
		1111	undef $dirty;
		1112	}
		1113
		1114	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1115	db_sync;
		1116	});
		1117
		1118	sub db_dirty() {
		1119	$dirty = 1;
		1120	$idle->start;
		1121	}
		1122
		1123	sub db_get($;$) {
		1124	@_ >= 2
		1125	? $DB->{$_[0]}{$_[1]}
		1126	: ($DB->{$_[0]} ||= { })
		1127	}
		1128
		1129	sub db_put($$;$) {
		1130	if (@_ >= 3) {
		1131	$DB->{$_[0]}{$_[1]} = $_[2];
		1132	} else {
		1133	$DB->{$_[0]} = $_[1];
		1134	}
		1135	db_dirty;
		1136	}
		1137
		1138	cf::global->attach (
		1139	prio => 10000,
		1140	on_cleanup => sub {
		1141	db_sync;
		1142	},
		1143	);
		1144	}
		1145
899	#############################################################################	1146	#############################################################################
900	# the server's main()	1147	# the server's main()
901		1148
		1149	sub cfg_load {
		1150	open my $fh, "<:utf8", cf::confdir . "/config"
		1151	or return;
		1152
		1153	local $/;
		1154	*CFG = YAML::Syck::Load <$fh>;
		1155	}
		1156
902	sub main {	1157	sub main {
		1158	cfg_load;
		1159	db_load;
903	load_extensions;	1160	load_extensions;
904	Event::loop;	1161	Event::loop;
905	}	1162	}
906		1163
907	#############################################################################	1164	#############################################################################
908	# initialisation	1165	# initialisation
909		1166
		1167	sub _perl_reload(&) {
		1168	my ($msg) = @_;
		1169
		1170	$msg->("reloading...");
		1171
		1172	eval {
		1173	# cancel all watchers
		1174	for (Event::all_watchers) {
		1175	$_->cancel if $_->data & WF_AUTOCANCEL;
		1176	}
		1177
		1178	# unload all extensions
		1179	for (@exts) {
		1180	$msg->("unloading <$_>");
		1181	unload_extension $_;
		1182	}
		1183
		1184	# unload all modules loaded from $LIBDIR
		1185	while (my ($k, $v) = each %INC) {
		1186	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1187
		1188	$msg->("removing <$k>");
		1189	delete $INC{$k};
		1190
		1191	$k =~ s/\.pm$//;
		1192	$k =~ s/\//::/g;
		1193
		1194	if (my $cb = $k->can ("unload_module")) {
		1195	$cb->();
		1196	}
		1197
		1198	Symbol::delete_package $k;
		1199	}
		1200
		1201	# sync database to disk
		1202	cf::db_sync;
		1203
		1204	# get rid of safe::, as good as possible
		1205	Symbol::delete_package "safe::$_"
		1206	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1207
		1208	# remove register_script_function callbacks
		1209	# TODO
		1210
		1211	# unload cf.pm "a bit"
		1212	delete $INC{"cf.pm"};
		1213
		1214	# don't, removes xs symbols, too,
		1215	# and global variables created in xs
		1216	#Symbol::delete_package __PACKAGE__;
		1217
		1218	# reload cf.pm
		1219	$msg->("reloading cf.pm");
		1220	require cf;
		1221
		1222	# load config and database again
		1223	cf::cfg_load;
		1224	cf::db_load;
		1225
		1226	# load extensions
		1227	$msg->("load extensions");
		1228	cf::load_extensions;
		1229
		1230	# reattach attachments to objects
		1231	$msg->("reattach");
		1232	_global_reattach;
		1233	};
		1234	$msg->($@) if $@;
		1235
		1236	$msg->("reloaded");
		1237	};
		1238
		1239	sub perl_reload() {
		1240	_perl_reload {
		1241	warn $_[0];
		1242	print "$_[0]\n";
		1243	};
		1244	}
		1245
910	register "<global>", __PACKAGE__;	1246	register "<global>", __PACKAGE__;
911		1247
		1248	register_command "perl-reload" => sub {
		1249	my ($who, $arg) = @_;
		1250
		1251	if ($who->flag (FLAG_WIZ)) {
		1252	_perl_reload {
		1253	warn $_[0];
		1254	$who->message ($_[0]);
		1255	};
		1256	}
		1257	};
		1258
912	unshift @INC, $LIBDIR;	1259	unshift @INC, $LIBDIR;
913		1260
914	$TICK_WATCHER = Event->timer (	1261	$TICK_WATCHER = Event->timer (
915	prio => 1,	1262	prio => 0,
916	at => $NEXT_TICK || 1,	1263	at => $NEXT_TICK || 1,
		1264	data => WF_AUTOCANCEL,
917	cb => sub {	1265	cb => sub {
918	cf::server_tick; # one server iteration	1266	cf::server_tick; # one server iteration
919		1267
920	my $NOW = Event::time;	1268	my $NOW = Event::time;
921	$NEXT_TICK += $TICK;	1269	$NEXT_TICK += $TICK;
922		1270
923	# if we are delayed by four ticks, skip them all	1271	# if we are delayed by four ticks or more, skip them all
924	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1272	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
925		1273
926	$TICK_WATCHER->at ($NEXT_TICK);	1274	$TICK_WATCHER->at ($NEXT_TICK);
927	$TICK_WATCHER->start;	1275	$TICK_WATCHER->start;
928	},	1276	},
929	);	1277	);
930		1278
		1279	IO::AIO::max_poll_time $TICK * 0.2;
		1280
		1281	Event->io (fd => IO::AIO::poll_fileno,
		1282	poll => 'r',
		1283	prio => 5,
		1284	data => WF_AUTOCANCEL,
		1285	cb => \&IO::AIO::poll_cb);
		1286
931	1	1287	1
932		1288

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