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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.46 by root, Sun Aug 27 16:15:12 2006 UTC vs.
Revision 1.95 by root, Fri Dec 22 02:04:20 2006 UTC

…		…
5	use Storable;	5	use Storable;
6	use Opcode;	6	use Opcode;
7	use Safe;	7	use Safe;
8	use Safe::Hole;	8	use Safe::Hole;
9		9
		10	use IO::AIO ();
		11	use YAML::Syck ();
10	use Time::HiRes;	12	use Time::HiRes;
11	use Event;	13	use Event;
12	$Event::Eval = 1; # no idea why this is required, but it is	14	$Event::Eval = 1; # no idea why this is required, but it is
13		15
		16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		17	$YAML::Syck::ImplicitUnicode = 1;
		18
14	use strict;	19	use strict;
15		20
		21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		22
16	our %COMMAND = ();	23	our %COMMAND = ();
		24	our %COMMAND_TIME = ();
		25	our %EXTCMD = ();
		26
		27	_init_vars;
		28
17	our @EVENT;	29	our @EVENT;
18	our %PROP_TYPE;	30	our $LIBDIR = datadir . "/ext";
19	our %PROP_IDX;
20	our $LIBDIR = maps_directory "perl";
21		31
22	our $TICK = MAX_TIME * 1e-6;	32	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	33	our $TICK_WATCHER;
24	our $NEXT_TICK;	34	our $NEXT_TICK;
		35
		36	our %CFG;
		37
		38	our $UPTIME; $UPTIME ||= time;
		39
		40	#############################################################################
		41
		42	=head2 GLOBAL VARIABLES
		43
		44	=over 4
		45
		46	=item $cf::UPTIME
		47
		48	The timestamp of the server start (so not actually an uptime).
		49
		50	=item $cf::LIBDIR
		51
		52	The perl library directory, where extensions and cf-specific modules can
		53	be found. It will be added to C<@INC> automatically.
		54
		55	=item $cf::TICK
		56
		57	The interval between server ticks, in seconds.
		58
		59	=item %cf::CFG
		60
		61	Configuration for the server, loaded from C</etc/crossfire/config>, or
		62	from wherever your confdir points to.
		63
		64	=back
		65
		66	=cut
25		67
26	BEGIN {	68	BEGIN {
27	*CORE::GLOBAL::warn = sub {	69	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	70	my $msg = join "", @_;
29	$msg .= "\n"	71	$msg .= "\n"
…		…
32	print STDERR "cfperl: $msg";	74	print STDERR "cfperl: $msg";
33	LOG llevError, "cfperl: $msg";	75	LOG llevError, "cfperl: $msg";
34	};	76	};
35	}	77	}
36		78
37	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
38		80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
39	# generate property mutators	81	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
40	sub prop_gen {	82	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
41	my ($prefix, $class) = @_;	83	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
42
43	no strict 'refs';
44
45	for my $prop (keys %PROP_TYPE) {
46	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
47	my $sub = lc $1;
48
49	my $type = $PROP_TYPE{$prop};
50	my $idx = $PROP_IDX {$prop};
51
52	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
53	$_[0]->get_property ($type, $idx)
54	};
55
56	*{"$class\::set_$sub"} = sub {
57	$_[0]->set_property ($type, $idx, $_[1]);
58	} unless $ignore_set{$prop};
59	}
60	}
61
62	# auto-generate most of the API
63
64	prop_gen OBJECT_PROP => "cf::object";
65	# CFAPI_OBJECT_ANIMATION?
66	prop_gen PLAYER_PROP => "cf::object::player";
67
68	prop_gen MAP_PROP => "cf::map";
69	prop_gen ARCH_PROP => "cf::arch";
70
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		85
73	# we bless all objects into (empty) derived classes to force a method lookup	86	# we bless all objects into (empty) derived classes to force a method lookup
74	# within the Safe compartment.	87	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	88	for my $pkg (qw(
		89	cf::global
		90	cf::object cf::object::player
		91	cf::client cf::player
		92	cf::arch cf::living
		93	cf::map cf::party cf::region
		94	)) {
76	no strict 'refs';	95	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	96	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	97	}
79		98
80	$Event::DIED = sub {	99	$Event::DIED = sub {
…		…
82	};	101	};
83		102
84	my %ext_pkg;	103	my %ext_pkg;
85	my @exts;	104	my @exts;
86	my @hook;	105	my @hook;
87	my %command;
88	my %extcmd;
89		106
90	#############################################################################	107	=head2 UTILITY FUNCTIONS
91	# utility functions	108
		109	=over 4
		110
		111	=cut
92		112
93	use JSON::Syck (); # TODO# replace by JSON::PC once working	113	use JSON::Syck (); # TODO# replace by JSON::PC once working
		114
		115	=item $ref = cf::from_json $json
		116
		117	Converts a JSON string into the corresponding perl data structure.
		118
		119	=cut
94		120
95	sub from_json($) {	121	sub from_json($) {
96	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	122	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
97	JSON::Syck::Load $_[0]	123	JSON::Syck::Load $_[0]
98	}	124	}
99		125
		126	=item $json = cf::to_json $ref
		127
		128	Converts a perl data structure into its JSON representation.
		129
		130	=cut
		131
100	sub to_json($) {	132	sub to_json($) {
101	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
102	JSON::Syck::Dump $_[0]	134	JSON::Syck::Dump $_[0]
103	}	135	}
104		136
		137	=back
		138
		139	=cut
		140
105	#############################################################################	141	#############################################################################
106	# "new" plug-in system
107		142
108	=item $object->attach ($attachment, ...)	143	=head2 ATTACHABLE OBJECTS
109		144
110	Attach a pre-registered attachment to an object.	145	Many objects in crossfire are so-called attachable objects. That means you can
		146	attach callbacks/event handlers (a collection of which is called an "attachment")
		147	to it. All such attachable objects support the following methods.
111		148
112	=item $player->attach ($attachment, ...)	149	In the following description, CLASS can be any of C<global>, C<object>
		150	C<player>, C<client> or C<map> (i.e. the attachable objects in
		151	crossfire+).
113		152
114	Attach a pre-registered attachment to a player.	153	=over 4
115		154
116	=item $map->attach ($attachment, ...) # not yet persistent	155	=item $attachable->attach ($attachment, key => $value...)
117		156
118	Attach a pre-registered attachment to a map.	157	=item $attachable->detach ($attachment)
119		158
120	=item cf::attach_global ...	159	Attach/detach a pre-registered attachment to a specific object and give it
		160	the specified key/value pairs as arguments.
121		161
122	Attach handlers for global events.	162	Example, attach a minesweeper attachment to the given object, making it a
		163	10x10 minesweeper game:
123		164
124	This and all following C<attach_*>-functions expect any number of the	165	$obj->attach (minesweeper => width => 10, height => 10);
125	following handler/hook descriptions:	166
		167	=item $bool = $attachable->attached ($name)
		168
		169	Checks wether the named attachment is currently attached to the object.
		170
		171	=item cf::CLASS->attach ...
		172
		173	=item cf::CLASS->detach ...
		174
		175	Define an anonymous attachment and attach it to all objects of the given
		176	CLASS. See the next function for an explanation of its arguments.
		177
		178	You can attach to global events by using the C<cf::global> class.
		179
		180	Example, log all player logins:
		181
		182	cf::player->attach (
		183	on_login => sub {
		184	my ($pl) = @_;
		185	...
		186	},
		187	);
		188
		189	Example, attach to the jeweler skill:
		190
		191	cf::object->attach (
		192	type => cf::SKILL,
		193	subtype => cf::SK_JEWELER,
		194	on_use_skill => sub {
		195	my ($sk, $ob, $part, $dir, $msg) = @_;
		196	...
		197	},
		198	);
		199
		200	=item cf::CLASS::attachment $name, ...
		201
		202	Register an attachment by C<$name> through which attachable objects of the
		203	given CLASS can refer to this attachment.
		204
		205	Some classes such as crossfire maps and objects can specify attachments
		206	that are attached at load/instantiate time, thus the need for a name.
		207
		208	These calls expect any number of the following handler/hook descriptions:
126		209
127	=over 4	210	=over 4
128		211
129	=item prio => $number	212	=item prio => $number
130		213
…		…
132	by another C<prio> setting). Lower priority handlers get executed	215	by another C<prio> setting). Lower priority handlers get executed
133	earlier. The default priority is C<0>, and many built-in handlers are	216	earlier. The default priority is C<0>, and many built-in handlers are
134	registered at priority C<-1000>, so lower priorities should not be used	217	registered at priority C<-1000>, so lower priorities should not be used
135	unless you know what you are doing.	218	unless you know what you are doing.
136		219
		220	=item type => $type
		221
		222	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		223	given type of objects only (the additional parameter C<subtype> can be
		224	used to further limit to the given subtype).
		225
137	=item on_I<event> => \&cb	226	=item on_I<event> => \&cb
138		227
139	Call the given code reference whenever the named event happens (event is	228	Call the given code reference whenever the named event happens (event is
140	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	229	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
141	handlers are recognised generally depends on the type of object these	230	handlers are recognised generally depends on the type of object these
…		…
150	package and register them. Only handlers for eevents supported by the	239	package and register them. Only handlers for eevents supported by the
151	object/class are recognised.	240	object/class are recognised.
152		241
153	=back	242	=back
154		243
155	=item cf::attach_to_type $object_type, ...	244	Example, define an attachment called "sockpuppet" that calls the given
		245	event handler when a monster attacks:
156		246
157	Attach handlers for a specific object type (e.g. TRANSPORT).	247	cf::object::attachment sockpuppet =>
158		248	on_skill_attack => sub {
159	=item cf::attach_to_objects ...	249	my ($self, $victim) = @_;
160		250	...
161	Attach handlers to all objects. Do not use this except for debugging or	251	}
162	very rare events, as handlers are (obviously) called for I<all> objects in	252	}
163	the game.
164
165	=item cf::attach_to_players ...
166
167	Attach handlers to all players.
168
169	=item cf::attach_to_maps ...
170
171	Attach handlers to all maps.
172
173	=item cf:register_attachment $name, ...
174		253
175	=cut	254	=cut
176		255
177	# the following variables are defined in .xs and must not be re-created	256	# the following variables are defined in .xs and must not be re-created
178	our @CB_GLOBAL = (); # registry for all global events	257	our @CB_GLOBAL = (); # registry for all global events
179	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
180	our @CB_PLAYER = ();	259	our @CB_PLAYER = ();
		260	our @CB_CLIENT = ();
181	our @CB_TYPE = (); # registry for type (cf-object class) based events	261	our @CB_TYPE = (); # registry for type (cf-object class) based events
182	our @CB_MAP = ();	262	our @CB_MAP = ();
183		263
184	my %attachment;	264	my %attachment;
185		265
186	sub _attach_cb($\%$$$) {	266	sub _attach_cb($$$$) {
187	my ($registry, $undo, $event, $prio, $cb) = @_;	267	my ($registry, $event, $prio, $cb) = @_;
188		268
189	use sort 'stable';	269	use sort 'stable';
190		270
191	$cb = [$prio, $cb];	271	$cb = [$prio, $cb];
192		272
193	@{$registry->[$event]} = sort	273	@{$registry->[$event]} = sort
194	{ $a->[0] cmp $b->[0] }	274	{ $a->[0] cmp $b->[0] }
195	@{$registry->[$event] || []}, $cb;	275	@{$registry->[$event] || []}, $cb;
196
197	push @{$undo->{cb}}, [$event, $cb];
198	}	276	}
199		277
200	# attach handles attaching event callbacks	278	# attach handles attaching event callbacks
201	# the only thing the caller has to do is pass the correct	279	# the only thing the caller has to do is pass the correct
202	# registry (== where the callback attaches to).	280	# registry (== where the callback attaches to).
203	sub _attach(\@$@) {	281	sub _attach {
204	my ($registry, $klass, @arg) = @_;	282	my ($registry, $klass, @arg) = @_;
205		283
		284	my $object_type;
206	my $prio = 0;	285	my $prio = 0;
207
208	my %undo = (
209	registry => $registry,
210	cb => [],
211	);
212
213	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
214		287
215	while (@arg) {	288	while (@arg) {
216	my $type = shift @arg;	289	my $type = shift @arg;
217		290
218	if ($type eq "prio") {	291	if ($type eq "prio") {
219	$prio = shift @arg;	292	$prio = shift @arg;
220		293
		294	} elsif ($type eq "type") {
		295	$object_type = shift @arg;
		296	$registry = $CB_TYPE[$object_type] ||= [];
		297
		298	} elsif ($type eq "subtype") {
		299	defined $object_type or Carp::croak "subtype specified without type";
		300	my $object_subtype = shift @arg;
		301	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		302
221	} elsif ($type eq "package") {	303	} elsif ($type eq "package") {
222	my $pkg = shift @arg;	304	my $pkg = shift @arg;
223		305
224	while (my ($name, $id) = each %cb_id) {	306	while (my ($name, $id) = each %cb_id) {
225	if (my $cb = $pkg->can ($name)) {	307	if (my $cb = $pkg->can ($name)) {
226	_attach_cb $registry, %undo, $id, $prio, $cb;	308	_attach_cb $registry, $id, $prio, $cb;
227	}	309	}
228	}	310	}
229		311
230	} elsif (exists $cb_id{$type}) {	312	} elsif (exists $cb_id{$type}) {
231	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	313	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
232		314
233	} elsif (ref $type) {	315	} elsif (ref $type) {
234	warn "attaching objects not supported, ignoring.\n";	316	warn "attaching objects not supported, ignoring.\n";
235		317
236	} else {	318	} else {
237	shift @arg;	319	shift @arg;
238	warn "attach argument '$type' not supported, ignoring.\n";	320	warn "attach argument '$type' not supported, ignoring.\n";
239	}	321	}
240	}	322	}
241
242	\%undo
243	}	323	}
244		324
245	sub _attach_attachment {	325	sub _object_attach {
246	my ($klass, $obj, $name, @args) = q_;	326	my ($obj, $name, %arg) = @_;
247		327
248	my $res;	328	return if exists $obj->{_attachment}{$name};
249		329
250	if (my $attach = $attachment{$name}) {	330	if (my $attach = $attachment{$name}) {
251	my $registry = $obj->registry;	331	my $registry = $obj->registry;
252		332
		333	for (@$attach) {
		334	my ($klass, @attach) = @$_;
253	$res = _attach @$registry, $klass, @$attach;	335	_attach $registry, $klass, @attach;
254
255	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {
256	for (@$cb) {
257	eval { $_->[1]->($obj, @args); };
258	if ($@) {
259	warn "$@";
260	warn "... while processing '$name' instantiate with args <@args>.\n";
261	}
262	}	336	}
263	}	337
		338	$obj->{$name} = \%arg;
264	} else {	339	} else {
265	warn "object uses attachment '$name' that is not available, postponing.\n";	340	warn "object uses attachment '$name' that is not available, postponing.\n";
266	}	341	}
267		342
268	push @{$obj->{_attachment}}, $name;	343	$obj->{_attachment}{$name} = undef;
269
270	$res->{attachment} = $name;
271	$res
272	}	344	}
273		345
274	sub cf::object::attach {	346	sub cf::attachable::attach {
		347	if (ref $_[0]) {
		348	_object_attach @_;
		349	} else {
		350	_attach shift->_attach_registry, @_;
		351	}
		352	};
		353
		354	# all those should be optimised
		355	sub cf::attachable::detach {
275	my ($obj, $name, @args) = @_;	356	my ($obj, $name) = @_;
276		357
277	_attach_attachment KLASS_OBJECT, $obj, $name, @args;	358	if (ref $obj) {
278	}	359	delete $obj->{_attachment}{$name};
		360	reattach ($obj);
		361	} else {
		362	Carp::croak "cannot, currently, detach class attachments";
		363	}
		364	};
279		365
280	sub cf::player::attach {	366	sub cf::attachable::attached {
281	my ($obj, $name, @args) = @_;	367	my ($obj, $name) = @_;
282		368
283	_attach_attachment KLASS_PLAYER, $obj, $name, @args;	369	exists $obj->{_attachment}{$name}
284	}	370	}
285		371
286	sub cf::map::attach {	372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
287	my ($obj, $name, @args) = @_;	373	eval "#line " . __LINE__ . " 'cf.pm'
		374	sub cf::\L$klass\E::_attach_registry {
		375	(\\\@CB_$klass, KLASS_$klass)
		376	}
288		377
289	_attach_attachment KLASS_MAP, $obj, $name, @args;	378	sub cf::\L$klass\E::attachment {
290	}
291
292	sub attach_global {
293	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
294	}
295
296	sub attach_to_type {
297	my $type = shift;
298
299	_attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	379	my \$name = shift;
316		380
317	$attachment{$name} = [@_];	381	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		382	}
		383	";
		384	die if $@;
318	}	385	}
319		386
320	our $override;	387	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	388	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		389
…		…
336	for (@$callbacks) {	403	for (@$callbacks) {
337	eval { &{$_->[1]} };	404	eval { &{$_->[1]} };
338		405
339	if ($@) {	406	if ($@) {
340	warn "$@";	407	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	408	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	409	override;
343	}	410	}
344		411
345	return 1 if $override;	412	return 1 if $override;
346	}	413	}
347		414
348	0	415	0
349	}	416	}
		417
		418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...
		419
		420	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
		421
		422	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
		423
		424	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)
		425
		426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
		427
		428	Generate a global/object/player/map-specific event with the given arguments.
		429
		430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
		431	removed in future versions), and there is no public API to access override
		432	results (if you must, access C<@cf::invoke_results> directly).
		433
		434	=back
		435
		436	=cut
		437
		438	#############################################################################
		439
		440	=head2 METHODS VALID FOR ALL ATTACHABLE OBJECTS
		441
		442	Attachable objects includes objects, players, clients and maps.
		443
		444	=over 4
		445
		446	=item $object->valid
		447
		448	Just because you have a perl object does not mean that the corresponding
		449	C-level object still exists. If you try to access an object that has no
		450	valid C counterpart anymore you get an exception at runtime. This method
		451	can be used to test for existence of the C object part without causing an
		452	exception.
		453
		454	=back
		455
		456	=cut
350		457
351	#############################################################################	458	#############################################################################
352	# object support	459	# object support
353		460
354	sub instantiate {	461	sub instantiate {
…		…
356		463
357	$data = from_json $data;	464	$data = from_json $data;
358		465
359	for (@$data) {	466	for (@$data) {
360	my ($name, $args) = @$_;	467	my ($name, $args) = @$_;
361	attach $obj, $name, @{$args || [] };	468
		469	$obj->attach ($name, %{$args || {} });
362	}	470	}
363	}	471	}
364		472
365	# basically do the same as instantiate, without calling instantiate	473	# basically do the same as instantiate, without calling instantiate
366	sub reattach {	474	sub reattach {
367	warn "reattach<@_>\n";#d#
368	my ($obj) = @_;	475	my ($obj) = @_;
369	my $registry = $obj->registry;	476	my $registry = $obj->registry;
370		477
		478	@$registry = ();
		479
		480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		481
371	for my $name (@{ $obj->{_attachment} }) {	482	for my $name (keys %{ $obj->{_attachment} || {} }) {
372	if (my $attach = $attachment{$name}) {	483	if (my $attach = $attachment{$name}) {
		484	for (@$attach) {
		485	my ($klass, @attach) = @$_;
373	_attach @$registry, KLASS_OBJECT, @$attach;	486	_attach $registry, $klass, @attach;
		487	}
374	} else {	488	} else {
375	warn "object uses attachment '$name' that is not available, postponing.\n";	489	warn "object uses attachment '$name' that is not available, postponing.\n";
376	}	490	}
377	}	491	}
378
379	warn "reattach<@_, $_>\n";
380	}	492	}
381		493
382	sub object_freezer_save {	494	sub object_freezer_save {
383	my ($filename, $objs) = @_;	495	my ($filename, $rdata, $objs) = @_;
384	warn "freeze $filename\n";#d#
385	use Data::Dumper; print Dumper $objs;
386		496
387	$filename .= ".pst";	497	if (length $$rdata) {
		498	warn sprintf "saving %s (%d,%d)\n",
		499	$filename, length $$rdata, scalar @$objs;
388		500
389	if (@$objs) {
390	open my $fh, ">:raw", "$filename~";	501	if (open my $fh, ">:raw", "$filename~") {
391	chmod $fh, SAVE_MODE;	502	chmod SAVE_MODE, $fh;
		503	syswrite $fh, $$rdata;
		504	close $fh;
		505
		506	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		507	chmod SAVE_MODE, $fh;
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	508	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
393	close $fh;	509	close $fh;
		510	rename "$filename.pst~", "$filename.pst";
		511	} else {
		512	unlink "$filename.pst";
		513	}
		514
394	rename "$filename~", $filename;	515	rename "$filename~", $filename;
		516	} else {
		517	warn "FATAL: $filename~: $!\n";
		518	}
395	} else {	519	} else {
396	unlink $filename;	520	unlink $filename;
		521	unlink "$filename.pst";
397	}	522	}
		523	}
		524
		525	sub object_freezer_as_string {
		526	my ($rdata, $objs) = @_;
		527
		528	use Data::Dumper;
		529
		530	$$rdata . Dumper $objs
398	}	531	}
399		532
400	sub object_thawer_load {	533	sub object_thawer_load {
401	my ($filename) = @_;	534	my ($filename) = @_;
402		535
403	warn "thaw $filename\n";#d#	536	local $/;
404		537
		538	my $av;
		539
		540	#TODO: use sysread etc.
		541	if (open my $data, "<:raw:perlio", $filename) {
		542	$data = <$data>;
405	open my $fh, "<:raw:perlio", "$filename.pst"	543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
406	or return;	544	$av = eval { (Storable::thaw <$pst>)->{objs} };
		545	}
		546	return ($data, $av);
		547	}
407		548
408	eval { local $/; (Storable::thaw <$fh>)->{objs} }	549	()
409	}	550	}
410		551
411	attach_to_objects	552	cf::object->attach (
412	prio => -1000000,	553	prio => -1000000,
413	on_clone => sub {	554	on_clone => sub {
414	my ($src, $dst) = @_;	555	my ($src, $dst) = @_;
415		556
416	@{$dst->registry} = @{$src->registry};	557	@{$dst->registry} = @{$src->registry};
417	warn "registry clone ", join ":", @{$src->registry};#d#
418		558
419	%$dst = %$src;	559	%$dst = %$src;
420		560
421	$dst->{_attachment} = [@{ $src->{_attachment} }]	561	%{$dst->{_attachment}} = %{$src->{_attachment}}
422	if exists $src->{_attachment};	562	if exists $src->{_attachment};
423
424	warn "clone<@_>\n";#d#
425	},	563	},
426	;	564	);
427		565
428	#############################################################################	566	#############################################################################
429	# old plug-in events	567	# command handling &c
430		568
431	sub inject_event {	569	=item cf::register_command $name => \&callback($ob,$args);
432	my $extension = shift;
433	my $event_code = shift;
434		570
435	my $cb = $hook[$event_code]{$extension}	571	Register a callback for execution when the client sends the user command
436	or return;	572	$name.
437		573
438	&$cb	574	=cut
439	}
440
441	sub inject_global_event {
442	my $event = shift;
443
444	my $cb = $hook[$event]
445	or return;
446
447	List::Util::max map &$_, values %$cb
448	}
449
450	sub inject_command {
451	my ($name, $obj, $params) = @_;
452
453	for my $cmd (@{ $command{$name} }) {
454	$cmd->[1]->($obj, $params);
455	}
456
457	-1
458	}
459		575
460	sub register_command {	576	sub register_command {
461	my ($name, $time, $cb) = @_;	577	my ($name, $cb) = @_;
462		578
463	my $caller = caller;	579	my $caller = caller;
464	#warn "registering command '$name/$time' to '$caller'";	580	#warn "registering command '$name/$time' to '$caller'";
465		581
466	push @{ $command{$name} }, [$time, $cb, $caller];	582	push @{ $COMMAND{$name} }, [$caller, $cb];
467	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
468	}	583	}
		584
		585	=item cf::register_extcmd $name => \&callback($pl,$packet);
		586
		587	Register a callbackf ro execution when the client sends an extcmd packet.
		588
		589	If the callback returns something, it is sent back as if reply was being
		590	called.
		591
		592	=cut
469		593
470	sub register_extcmd {	594	sub register_extcmd {
471	my ($name, $cb) = @_;	595	my ($name, $cb) = @_;
472		596
473	my $caller = caller;	597	my $caller = caller;
474	#warn "registering extcmd '$name' to '$caller'";	598	#warn "registering extcmd '$name' to '$caller'";
475		599
476	$extcmd{$name} = [$cb, $caller];	600	$EXTCMD{$name} = [$cb, $caller];
477	}	601	}
		602
		603	cf::player->attach (
		604	on_command => sub {
		605	my ($pl, $name, $params) = @_;
		606
		607	my $cb = $COMMAND{$name}
		608	or return;
		609
		610	for my $cmd (@$cb) {
		611	$cmd->[1]->($pl->ob, $params);
		612	}
		613
		614	cf::override;
		615	},
		616	on_extcmd => sub {
		617	my ($pl, $buf) = @_;
		618
		619	my $msg = eval { from_json $buf };
		620
		621	if (ref $msg) {
		622	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		623	if (my %reply = $cb->[0]->($pl, $msg)) {
		624	$pl->ext_reply ($msg->{msgid}, %reply);
		625	}
		626	}
		627	} else {
		628	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		629	}
		630
		631	cf::override;
		632	},
		633	);
478		634
479	sub register {	635	sub register {
480	my ($base, $pkg) = @_;	636	my ($base, $pkg) = @_;
481		637
482	#TODO	638	#TODO
…		…
501	. "#line 1 \"$path\"\n{\n"	657	. "#line 1 \"$path\"\n{\n"
502	. (do { local $/; <$fh> })	658	. (do { local $/; <$fh> })
503	. "\n};\n1";	659	. "\n};\n1";
504		660
505	eval $source	661	eval $source
506	or die "$path: $@";	662	or die $@ ? "$path: $@\n"
		663	: "extension disabled.\n";
507		664
508	push @exts, $pkg;	665	push @exts, $pkg;
509	$ext_pkg{$base} = $pkg;	666	$ext_pkg{$base} = $pkg;
510		667
511	# no strict 'refs';	668	# no strict 'refs';
…		…
524	# for my $idx (0 .. $#PLUGIN_EVENT) {	681	# for my $idx (0 .. $#PLUGIN_EVENT) {
525	# delete $hook[$idx]{$pkg};	682	# delete $hook[$idx]{$pkg};
526	# }	683	# }
527		684
528	# remove commands	685	# remove commands
529	for my $name (keys %command) {	686	for my $name (keys %COMMAND) {
530	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	687	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
531		688
532	if (@cb) {	689	if (@cb) {
533	$command{$name} = \@cb;	690	$COMMAND{$name} = \@cb;
534	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
535	} else {	691	} else {
536	delete $command{$name};
537	delete $COMMAND{"$name\000"};	692	delete $COMMAND{$name};
538	}	693	}
539	}	694	}
540		695
541	# remove extcmds	696	# remove extcmds
542	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	697	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
543	delete $extcmd{$name};	698	delete $EXTCMD{$name};
544	}	699	}
545		700
546	if (my $cb = $pkg->can ("unload")) {	701	if (my $cb = $pkg->can ("unload")) {
547	eval {	702	eval {
548	$cb->($pkg);	703	$cb->($pkg);
…		…
552		707
553	Symbol::delete_package $pkg;	708	Symbol::delete_package $pkg;
554	}	709	}
555		710
556	sub load_extensions {	711	sub load_extensions {
557	my $LIBDIR = maps_directory "perl";
558
559	for my $ext (<$LIBDIR/*.ext>) {	712	for my $ext (<$LIBDIR/*.ext>) {
560	next unless -r $ext;	713	next unless -r $ext;
561	eval {	714	eval {
562	load_extension $ext;	715	load_extension $ext;
563	1	716	1
564	} or warn "$ext not loaded: $@";	717	} or warn "$ext not loaded: $@";
565	}	718	}
566	}	719	}
567		720
568	sub _perl_reload(&) {
569	my ($msg) = @_;
570
571	$msg->("reloading...");
572
573	eval {
574	# 1. cancel all watchers
575	$_->cancel for Event::all_watchers;
576
577	# 2. unload all extensions
578	for (@exts) {
579	$msg->("unloading <$_>");
580	unload_extension $_;
581	}
582
583	# 3. unload all modules loaded from $LIBDIR
584	while (my ($k, $v) = each %INC) {
585	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
586
587	$msg->("removing <$k>");
588	delete $INC{$k};
589
590	$k =~ s/\.pm$//;
591	$k =~ s/\//::/g;
592
593	if (my $cb = $k->can ("unload_module")) {
594	$cb->();
595	}
596
597	Symbol::delete_package $k;
598	}
599
600	# 4. get rid of safe::, as good as possible
601	Symbol::delete_package "safe::$_"
602	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
603
604	# 5. remove register_script_function callbacks
605	# TODO
606
607	# 6. unload cf.pm "a bit"
608	delete $INC{"cf.pm"};
609
610	# don't, removes xs symbols, too,
611	# and global variables created in xs
612	#Symbol::delete_package __PACKAGE__;
613
614	# 7. reload cf.pm
615	$msg->("reloading cf.pm");
616	require cf;
617	};
618	$msg->($@) if $@;
619
620	$msg->("reloaded");
621	};
622
623	sub perl_reload() {
624	_perl_reload {
625	warn $_[0];
626	print "$_[0]\n";
627	};
628	}
629
630	register_command "perl-reload", 0, sub {
631	my ($who, $arg) = @_;
632
633	if ($who->flag (FLAG_WIZ)) {
634	_perl_reload {
635	warn $_[0];
636	$who->message ($_[0]);
637	};
638	}
639	};
640
641	#############################################################################
642	# extcmd framework, basically convert ext <msg>
643	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
644
645	attach_to_players
646	on_extcmd => sub {
647	my ($pl, $buf) = @_;
648
649	my $msg = eval { from_json $buf };
650
651	if (ref $msg) {
652	if (my $cb = $extcmd{$msg->{msgtype}}) {
653	if (my %reply = $cb->[0]->($pl, $msg)) {
654	$pl->ext_reply ($msg->{msgid}, %reply);
655	}
656	}
657	} else {
658	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
659	}
660
661	cf::override;
662	},
663	;
664
665	#############################################################################	721	#############################################################################
666	# load/save/clean perl data associated with a map	722	# load/save/clean perl data associated with a map
667		723
668	*cf::mapsupport::on_clean = sub {	724	*cf::mapsupport::on_clean = sub {
669	my ($map) = @_;	725	my ($map) = @_;
670		726
671	my $path = $map->tmpname;	727	my $path = $map->tmpname;
672	defined $path or return;	728	defined $path or return;
673		729
674	unlink "$path.cfperl";
675	unlink "$path.pst";	730	unlink "$path.pst";
676	};	731	};
677		732
678	*cf::mapsupport::on_swapin =
679	*cf::mapsupport::on_load = sub {
680	my ($map) = @_;
681
682	my $path = $map->tmpname;
683	$path = $map->path unless defined $path;
684
685	open my $fh, "<:raw", "$path.cfperl"
686	or return; # no perl data
687
688	my $data = Storable::thaw do { local $/; <$fh> };
689
690	$data->{version} <= 1
691	or return; # too new
692
693	$map->_set_obs ($data->{obs});
694	};
695
696	attach_to_maps prio => -10000, package => cf::mapsupport::;	733	cf::map->attach (prio => -10000, package => cf::mapsupport::);
697		734
698	#############################################################################	735	#############################################################################
699	# load/save perl data associated with player->ob objects	736	# load/save perl data associated with player->ob objects
700		737
701	sub all_objects(@) {	738	sub all_objects(@) {
702	@_, map all_objects ($_->inv), @_	739	@_, map all_objects ($_->inv), @_
703	}	740	}
704		741
705	attach_to_players	742	# TODO: compatibility cruft, remove when no longer needed
		743	cf::player->attach (
706	on_load => sub {	744	on_load => sub {
707	my ($pl, $path) = @_;	745	my ($pl, $path) = @_;
708		746
709	for my $o (all_objects $pl->ob) {	747	for my $o (all_objects $pl->ob) {
710	if (my $value = $o->get_ob_key_value ("_perl_data")) {	748	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
712		750
713	%$o = %{ Storable::thaw pack "H*", $value };	751	%$o = %{ Storable::thaw pack "H*", $value };
714	}	752	}
715	}	753	}
716	},	754	},
717	;	755	);
718		756
719	#############################################################################	757	#############################################################################
720	# core extensions - in perl	758
		759	=head2 CORE EXTENSIONS
		760
		761	Functions and methods that extend core crossfire objects.
		762
		763	=head3 cf::player
		764
		765	=over 4
721		766
722	=item cf::player::exists $login	767	=item cf::player::exists $login
723		768
724	Returns true when the given account exists.	769	Returns true when the given account exists.
725		770
…		…
728	sub cf::player::exists($) {	773	sub cf::player::exists($) {
729	cf::player::find $_[0]	774	cf::player::find $_[0]
730	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	775	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
731	}	776	}
732		777
		778	=item $player->ext_reply ($msgid, $msgtype, %msg)
		779
		780	Sends an ext reply to the player.
		781
		782	=cut
		783
		784	sub cf::player::ext_reply($$$%) {
		785	my ($self, $id, %msg) = @_;
		786
		787	$msg{msgid} = $id;
		788
		789	$self->send ("ext " . to_json \%msg);
		790	}
		791
		792	=back
		793
		794	=head3 cf::object::player
		795
		796	=over 4
		797
733	=item $player->reply ($npc, $msg[, $flags])	798	=item $player_object->reply ($npc, $msg[, $flags])
734		799
735	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	800	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
736	can be C<undef>. Does the right thing when the player is currently in a	801	can be C<undef>. Does the right thing when the player is currently in a
737	dialogue with the given NPC character.	802	dialogue with the given NPC character.
738		803
739	=cut	804	=cut
740		805
741	# rough implementation of a future "reply" method that works	806	# rough implementation of a future "reply" method that works
742	# with dialog boxes.	807	# with dialog boxes.
		808	#TODO: the first argument must go, split into a $npc->reply_to ( method
743	sub cf::object::player::reply($$$;$) {	809	sub cf::object::player::reply($$$;$) {
744	my ($self, $npc, $msg, $flags) = @_;	810	my ($self, $npc, $msg, $flags) = @_;
745		811
746	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	812	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
747		813
…		…
751	$msg = $npc->name . " says: $msg" if $npc;	817	$msg = $npc->name . " says: $msg" if $npc;
752	$self->message ($msg, $flags);	818	$self->message ($msg, $flags);
753	}	819	}
754	}	820	}
755		821
756	=item $player->ext_reply ($msgid, $msgtype, %msg)	822	=item $player_object->may ("access")
757		823
758	Sends an ext reply to the player.	824	Returns wether the given player is authorized to access resource "access"
		825	(e.g. "command_wizcast").
759		826
760	=cut	827	=cut
761		828
762	sub cf::player::ext_reply($$$%) {	829	sub cf::object::player::may {
763	my ($self, $id, %msg) = @_;	830	my ($self, $access) = @_;
764		831
765	$msg{msgid} = $id;	832	$self->flag (cf::FLAG_WIZ) ||
766		833	(ref $cf::CFG{"may_$access"}
767	$self->send ("ext " . to_json \%msg);	834	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		835	: $cf::CFG{"may_$access"})
768	}	836	}
769		837
770	#############################################################################	838	=head3 cf::client
771	# map scripting support	839
		840	=over 4
		841
		842	=item $client->send_drawinfo ($text, $flags)
		843
		844	Sends a drawinfo packet to the client. Circumvents output buffering so
		845	should not be used under normal circumstances.
		846
		847	=cut
		848
		849	sub cf::client::send_drawinfo {
		850	my ($self, $text, $flags) = @_;
		851
		852	utf8::encode $text;
		853	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		854	}
		855
		856
		857	=item $success = $client->query ($flags, "text", \&cb)
		858
		859	Queues a query to the client, calling the given callback with
		860	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		861	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		862
		863	Queries can fail, so check the return code. Or don't, as queries will become
		864	reliable at some point in the future.
		865
		866	=cut
		867
		868	sub cf::client::query {
		869	my ($self, $flags, $text, $cb) = @_;
		870
		871	return unless $self->state == ST_PLAYING
		872	|| $self->state == ST_SETUP
		873	|| $self->state == ST_CUSTOM;
		874
		875	$self->state (ST_CUSTOM);
		876
		877	utf8::encode $text;
		878	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		879
		880	$self->send_packet ($self->{query_queue}[0][0])
		881	if @{ $self->{query_queue} } == 1;
		882	}
		883
		884	cf::client->attach (
		885	on_reply => sub {
		886	my ($ns, $msg) = @_;
		887
		888	# this weird shuffling is so that direct followup queries
		889	# get handled first
		890	my $queue = delete $ns->{query_queue};
		891
		892	(shift @$queue)->[1]->($msg);
		893
		894	push @{ $ns->{query_queue} }, @$queue;
		895
		896	if (@{ $ns->{query_queue} } == @$queue) {
		897	if (@$queue) {
		898	$ns->send_packet ($ns->{query_queue}[0][0]);
		899	} else {
		900	$ns->state (ST_PLAYING);
		901	}
		902	}
		903	},
		904	);
		905
		906	=back
		907
		908
		909	=head2 SAFE SCRIPTING
		910
		911	Functions that provide a safe environment to compile and execute
		912	snippets of perl code without them endangering the safety of the server
		913	itself. Looping constructs, I/O operators and other built-in functionality
		914	is not available in the safe scripting environment, and the number of
		915	functions and methods that can be called is greatly reduced.
		916
		917	=cut
772		918
773	our $safe = new Safe "safe";	919	our $safe = new Safe "safe";
774	our $safe_hole = new Safe::Hole;	920	our $safe_hole = new Safe::Hole;
775		921
776	$SIG{FPE} = 'IGNORE';	922	$SIG{FPE} = 'IGNORE';
777		923
778	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	924	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
779		925
780	# here we export the classes and methods available to script code	926	# here we export the classes and methods available to script code
781		927
		928	=pod
		929
		930	The following fucntions and emthods are available within a safe environment:
		931
		932	cf::object contr pay_amount pay_player map
		933	cf::object::player player
		934	cf::player peaceful
		935	cf::map trigger
		936
		937	=cut
		938
782	for (	939	for (
783	["cf::object" => qw(contr pay_amount pay_player)],	940	["cf::object" => qw(contr pay_amount pay_player map)],
784	["cf::object::player" => qw(player)],	941	["cf::object::player" => qw(player)],
785	["cf::player" => qw(peaceful)],	942	["cf::player" => qw(peaceful)],
		943	["cf::map" => qw(trigger)],
786	) {	944	) {
787	no strict 'refs';	945	no strict 'refs';
788	my ($pkg, @funs) = @$_;	946	my ($pkg, @funs) = @$_;
789	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	947	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790	for @funs;	948	for @funs;
791	}	949	}
		950
		951	=over 4
		952
		953	=item @retval = safe_eval $code, [var => value, ...]
		954
		955	Compiled and executes the given perl code snippet. additional var/value
		956	pairs result in temporary local (my) scalar variables of the given name
		957	that are available in the code snippet. Example:
		958
		959	my $five = safe_eval '$first + $second', first => 1, second => 4;
		960
		961	=cut
792		962
793	sub safe_eval($;@) {	963	sub safe_eval($;@) {
794	my ($code, %vars) = @_;	964	my ($code, %vars) = @_;
795		965
796	my $qcode = $code;	966	my $qcode = $code;
…		…
819	}	989	}
820		990
821	wantarray ? @res : $res[0]	991	wantarray ? @res : $res[0]
822	}	992	}
823		993
		994	=item cf::register_script_function $function => $cb
		995
		996	Register a function that can be called from within map/npc scripts. The
		997	function should be reasonably secure and should be put into a package name
		998	like the extension.
		999
		1000	Example: register a function that gets called whenever a map script calls
		1001	C<rent::overview>, as used by the C<rent> extension.
		1002
		1003	cf::register_script_function "rent::overview" => sub {
		1004	...
		1005	};
		1006
		1007	=cut
		1008
824	sub register_script_function {	1009	sub register_script_function {
825	my ($fun, $cb) = @_;	1010	my ($fun, $cb) = @_;
826		1011
827	no strict 'refs';	1012	no strict 'refs';
828	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1013	*{"safe::$fun"} = $safe_hole->wrap ($cb);
829	}	1014	}
830		1015
		1016	=back
		1017
		1018	=cut
		1019
		1020	#############################################################################
		1021
		1022	=head2 EXTENSION DATABASE SUPPORT
		1023
		1024	Crossfire maintains a very simple database for extension use. It can
		1025	currently store anything that can be serialised using Storable, which
		1026	excludes objects.
		1027
		1028	The parameter C<$family> should best start with the name of the extension
		1029	using it, it should be unique.
		1030
		1031	=over 4
		1032
		1033	=item $hashref = cf::db_get $family
		1034
		1035	Return a hashref for use by the extension C<$family>, which can be
		1036	modified. After modifications, you have to call C<cf::db_dirty> or
		1037	C<cf::db_sync>.
		1038
		1039	=item $value = cf::db_get $family => $key
		1040
		1041	Returns a single value from the database
		1042
		1043	=item cf::db_put $family => $hashref
		1044
		1045	Stores the given family hashref into the database. Updates are delayed, if
		1046	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1047
		1048	=item cf::db_put $family => $key => $value
		1049
		1050	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1051	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1052
		1053	=item cf::db_dirty
		1054
		1055	Marks the database as dirty, to be updated at a later time.
		1056
		1057	=item cf::db_sync
		1058
		1059	Immediately write the database to disk I<if it is dirty>.
		1060
		1061	=cut
		1062
		1063	our $DB;
		1064
		1065	{
		1066	my $path = cf::localdir . "/database.pst";
		1067
		1068	sub db_load() {
		1069	warn "loading database $path\n";#d# remove later
		1070	$DB = stat $path ? Storable::retrieve $path : { };
		1071	}
		1072
		1073	my $pid;
		1074
		1075	sub db_save() {
		1076	warn "saving database $path\n";#d# remove later
		1077	waitpid $pid, 0 if $pid;
		1078	if (0 == ($pid = fork)) {
		1079	$DB->{_meta}{version} = 1;
		1080	Storable::nstore $DB, "$path~";
		1081	rename "$path~", $path;
		1082	cf::_exit 0 if defined $pid;
		1083	}
		1084	}
		1085
		1086	my $dirty;
		1087
		1088	sub db_sync() {
		1089	db_save if $dirty;
		1090	undef $dirty;
		1091	}
		1092
		1093	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1094	db_sync;
		1095	});
		1096
		1097	sub db_dirty() {
		1098	$dirty = 1;
		1099	$idle->start;
		1100	}
		1101
		1102	sub db_get($;$) {
		1103	@_ >= 2
		1104	? $DB->{$_[0]}{$_[1]}
		1105	: ($DB->{$_[0]} ||= { })
		1106	}
		1107
		1108	sub db_put($$;$) {
		1109	if (@_ >= 3) {
		1110	$DB->{$_[0]}{$_[1]} = $_[2];
		1111	} else {
		1112	$DB->{$_[0]} = $_[1];
		1113	}
		1114	db_dirty;
		1115	}
		1116
		1117	cf::global->attach (
		1118	prio => 10000,
		1119	on_cleanup => sub {
		1120	db_sync;
		1121	},
		1122	);
		1123	}
		1124
831	#############################################################################	1125	#############################################################################
832	# the server's main()	1126	# the server's main()
833		1127
		1128	sub cfg_load {
		1129	open my $fh, "<:utf8", cf::confdir . "/config"
		1130	or return;
		1131
		1132	local $/;
		1133	*CFG = YAML::Syck::Load <$fh>;
		1134	}
		1135
834	sub main {	1136	sub main {
		1137	cfg_load;
		1138	db_load;
		1139	load_extensions;
835	Event::loop;	1140	Event::loop;
836	}	1141	}
837		1142
838	#############################################################################	1143	#############################################################################
839	# initialisation	1144	# initialisation
840		1145
		1146	sub _perl_reload(&) {
		1147	my ($msg) = @_;
		1148
		1149	$msg->("reloading...");
		1150
		1151	eval {
		1152	# cancel all watchers
		1153	for (Event::all_watchers) {
		1154	$_->cancel if $_->data & WF_AUTOCANCEL;
		1155	}
		1156
		1157	# unload all extensions
		1158	for (@exts) {
		1159	$msg->("unloading <$_>");
		1160	unload_extension $_;
		1161	}
		1162
		1163	# unload all modules loaded from $LIBDIR
		1164	while (my ($k, $v) = each %INC) {
		1165	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1166
		1167	$msg->("removing <$k>");
		1168	delete $INC{$k};
		1169
		1170	$k =~ s/\.pm$//;
		1171	$k =~ s/\//::/g;
		1172
		1173	if (my $cb = $k->can ("unload_module")) {
		1174	$cb->();
		1175	}
		1176
		1177	Symbol::delete_package $k;
		1178	}
		1179
		1180	# sync database to disk
		1181	cf::db_sync;
		1182
		1183	# get rid of safe::, as good as possible
		1184	Symbol::delete_package "safe::$_"
		1185	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1186
		1187	# remove register_script_function callbacks
		1188	# TODO
		1189
		1190	# unload cf.pm "a bit"
		1191	delete $INC{"cf.pm"};
		1192
		1193	# don't, removes xs symbols, too,
		1194	# and global variables created in xs
		1195	#Symbol::delete_package __PACKAGE__;
		1196
		1197	# reload cf.pm
		1198	$msg->("reloading cf.pm");
		1199	require cf;
		1200
		1201	# load config and database again
		1202	cf::cfg_load;
		1203	cf::db_load;
		1204
		1205	# load extensions
		1206	$msg->("load extensions");
		1207	cf::load_extensions;
		1208
		1209	# reattach attachments to objects
		1210	$msg->("reattach");
		1211	_global_reattach;
		1212	};
		1213	$msg->($@) if $@;
		1214
		1215	$msg->("reloaded");
		1216	};
		1217
		1218	sub perl_reload() {
		1219	_perl_reload {
		1220	warn $_[0];
		1221	print "$_[0]\n";
		1222	};
		1223	}
		1224
841	register "<global>", __PACKAGE__;	1225	register "<global>", __PACKAGE__;
842		1226
		1227	register_command "perl-reload" => sub {
		1228	my ($who, $arg) = @_;
		1229
		1230	if ($who->flag (FLAG_WIZ)) {
		1231	_perl_reload {
		1232	warn $_[0];
		1233	$who->message ($_[0]);
		1234	};
		1235	}
		1236	};
		1237
843	unshift @INC, $LIBDIR;	1238	unshift @INC, $LIBDIR;
844		1239
845	load_extensions;
846
847	$TICK_WATCHER = Event->timer (	1240	$TICK_WATCHER = Event->timer (
848	prio => 1,	1241	prio => 0,
849	at => $NEXT_TICK || 1,	1242	at => $NEXT_TICK || 1,
		1243	data => WF_AUTOCANCEL,
850	cb => sub {	1244	cb => sub {
851	cf::server_tick; # one server iteration	1245	cf::server_tick; # one server iteration
852		1246
853	my $NOW = Event::time;	1247	my $NOW = Event::time;
854	$NEXT_TICK += $TICK;	1248	$NEXT_TICK += $TICK;
855		1249
856	# if we are delayed by four ticks, skip them all	1250	# if we are delayed by four ticks or more, skip them all
857	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1251	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
858		1252
859	$TICK_WATCHER->at ($NEXT_TICK);	1253	$TICK_WATCHER->at ($NEXT_TICK);
860	$TICK_WATCHER->start;	1254	$TICK_WATCHER->start;
861	},	1255	},
862	);	1256	);
863		1257
		1258	IO::AIO::max_poll_time $TICK * 0.2;
		1259
		1260	Event->io (fd => IO::AIO::poll_fileno,
		1261	poll => 'r',
		1262	prio => 5,
		1263	data => WF_AUTOCANCEL,
		1264	cb => \&IO::AIO::poll_cb);
		1265
864	1	1266	1
865		1267

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