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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.49 by root, Sun Aug 27 17:59:26 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
16	_reload_1;	21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
17		22
18	our %COMMAND = ();	23	our %COMMAND = ();
		24	our %COMMAND_TIME = ();
		25	our %EXTCMD = ();
		26
		27	_init_vars;
		28
19	our @EVENT;	29	our @EVENT;
20	our %PROP_TYPE;	30	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		31
24	our $TICK = MAX_TIME * 1e-6;	32	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	33	our $TICK_WATCHER;
26	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
27		67
28	BEGIN {	68	BEGIN {
29	*CORE::GLOBAL::warn = sub {	69	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	70	my $msg = join "", @_;
31	$msg .= "\n"	71	$msg .= "\n"
…		…
34	print STDERR "cfperl: $msg";	74	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	75	LOG llevError, "cfperl: $msg";
36	};	76	};
37	}	77	}
38		78
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	81	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	82	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	83	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		85
75	# 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
76	# within the Safe compartment.	87	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	88	for my $pkg (qw(
		89	cf::global
		90	cf::object cf::object::player
		91	cf::client cf::player
		92	cf::arch cf::living
		93	cf::map cf::party cf::region
		94	)) {
78	no strict 'refs';	95	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	96	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	97	}
81		98
82	$Event::DIED = sub {	99	$Event::DIED = sub {
…		…
84	};	101	};
85		102
86	my %ext_pkg;	103	my %ext_pkg;
87	my @exts;	104	my @exts;
88	my @hook;	105	my @hook;
89	my %command;
90	my %extcmd;
91		106
92	#############################################################################	107	=head2 UTILITY FUNCTIONS
93	# utility functions	108
		109	=over 4
		110
		111	=cut
94		112
95	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 $json
		116
		117	Converts a JSON string into the corresponding perl data structure.
		118
		119	=cut
96		120
97	sub from_json($) {	121	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	122	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	123	JSON::Syck::Load $_[0]
100	}	124	}
101		125
		126	=item $json = cf::to_json $ref
		127
		128	Converts a perl data structure into its JSON representation.
		129
		130	=cut
		131
102	sub to_json($) {	132	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	134	JSON::Syck::Dump $_[0]
105	}	135	}
106		136
		137	=back
		138
		139	=cut
		140
107	#############################################################################	141	#############################################################################
108	# "new" plug-in system
109		142
		143	=head2 ATTACHABLE OBJECTS
		144
		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.
		148
		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+).
		152
		153	=over 4
		154
110	=item $object->attach ($attachment, key => $value...)	155	=item $attachable->attach ($attachment, key => $value...)
111		156
112	Attach a pre-registered attachment to an object.	157	=item $attachable->detach ($attachment)
113		158
114	=item $player->attach ($attachment, key => $value...)	159	Attach/detach a pre-registered attachment to a specific object and give it
		160	the specified key/value pairs as arguments.
115		161
116	Attach a pre-registered attachment to a player.	162	Example, attach a minesweeper attachment to the given object, making it a
		163	10x10 minesweeper game:
117		164
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	165	$obj->attach (minesweeper => width => 10, height => 10);
119		166
120	Attach a pre-registered attachment to a map.	167	=item $bool = $attachable->attached ($name)
121		168
122	=item cf::attach_global ...	169	Checks wether the named attachment is currently attached to the object.
123		170
124	Attach handlers for global events.	171	=item cf::CLASS->attach ...
125		172
126	This and all following C<attach_*>-functions expect any number of the	173	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	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:
128		209
129	=over 4	210	=over 4
130		211
131	=item prio => $number	212	=item prio => $number
132		213
…		…
134	by another C<prio> setting). Lower priority handlers get executed	215	by another C<prio> setting). Lower priority handlers get executed
135	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
136	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
137	unless you know what you are doing.	218	unless you know what you are doing.
138		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
139	=item on_I<event> => \&cb	226	=item on_I<event> => \&cb
140		227
141	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
142	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
143	handlers are recognised generally depends on the type of object these	230	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	239	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	240	object/class are recognised.
154		241
155	=back	242	=back
156		243
157	=item cf::attach_to_type $object_type, $subtype, ...	244	Example, define an attachment called "sockpuppet" that calls the given
		245	event handler when a monster attacks:
158		246
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	247	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	248	on_skill_attack => sub {
161	type.	249	my ($self, $victim) = @_;
162		250	...
163	=item cf::attach_to_objects ...	251	}
164		252	}
165	Attach handlers to all objects. Do not use this except for debugging or
166	very rare events, as handlers are (obviously) called for I<all> objects in
167	the game.
168
169	=item cf::attach_to_players ...
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		253
179	=cut	254	=cut
180		255
181	# the following variables are defined in .xs and must not be re-created	256	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	257	our @CB_GLOBAL = (); # registry for all global events
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	259	our @CB_PLAYER = ();
		260	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	261	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	262	our @CB_MAP = ();
187		263
188	my %attachment;	264	my %attachment;
189		265
190	sub _attach_cb($\%$$$) {	266	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	267	my ($registry, $event, $prio, $cb) = @_;
192		268
193	use sort 'stable';	269	use sort 'stable';
194		270
195	$cb = [$prio, $cb];	271	$cb = [$prio, $cb];
196		272
197	@{$registry->[$event]} = sort	273	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	274	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	275	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	276	}
203		277
204	# attach handles attaching event callbacks	278	# attach handles attaching event callbacks
205	# 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
206	# registry (== where the callback attaches to).	280	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	281	sub _attach {
208	my ($registry, $klass, @arg) = @_;	282	my ($registry, $klass, @arg) = @_;
209		283
		284	my $object_type;
210	my $prio = 0;	285	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	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;
218		287
219	while (@arg) {	288	while (@arg) {
220	my $type = shift @arg;	289	my $type = shift @arg;
221		290
222	if ($type eq "prio") {	291	if ($type eq "prio") {
223	$prio = shift @arg;	292	$prio = shift @arg;
224		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
225	} elsif ($type eq "package") {	303	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	304	my $pkg = shift @arg;
227		305
228	while (my ($name, $id) = each %cb_id) {	306	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	307	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	308	_attach_cb $registry, $id, $prio, $cb;
231	}	309	}
232	}	310	}
233		311
234	} elsif (exists $cb_id{$type}) {	312	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	313	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		314
237	} elsif (ref $type) {	315	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	316	warn "attaching objects not supported, ignoring.\n";
239		317
240	} else {	318	} else {
241	shift @arg;	319	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	320	warn "attach argument '$type' not supported, ignoring.\n";
243	}	321	}
244	}	322	}
245
246	\%undo
247	}	323	}
248		324
249	sub _attach_attachment {	325	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	326	my ($obj, $name, %arg) = @_;
251		327
252	my $res;	328	return if exists $obj->{_attachment}{$name};
253		329
254	if (my $attach = $attachment{$name}) {	330	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	331	my $registry = $obj->registry;
256		332
257	for (@$attach) {	333	for (@$attach) {
258	my ($klass, @attach) = @$_;	334	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	335	_attach $registry, $klass, @attach;
260	}	336	}
261		337
262	$obj->{$name} = \%arg;	338	$obj->{$name} = \%arg;
263	} else {	339	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	340	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	341	}
266		342
267	push @{$obj->{_attachment}}, $name;	343	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	344	}
272		345
273	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 {
274	my ($obj, $name, %arg) = @_;	356	my ($obj, $name) = @_;
275		357
276	_attach_attachment $obj, $name, %arg;	358	if (ref $obj) {
277	}	359	delete $obj->{_attachment}{$name};
		360	reattach ($obj);
		361	} else {
		362	Carp::croak "cannot, currently, detach class attachments";
		363	}
		364	};
278		365
279	sub cf::player::attach {	366	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	367	my ($obj, $name) = @_;
281		368
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	369	exists $obj->{_attachment}{$name}
283	}	370	}
284		371
285	sub cf::map::attach {	372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	373	eval "#line " . __LINE__ . " 'cf.pm'
		374	sub cf::\L$klass\E::_attach_registry {
		375	(\\\@CB_$klass, KLASS_$klass)
		376	}
287		377
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	378	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, 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} = [[KLASS_OBJECT, @_]];	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 {
…		…
368	my ($obj) = @_;	475	my ($obj) = @_;
369	my $registry = $obj->registry;	476	my $registry = $obj->registry;
370		477
371	@$registry = ();	478	@$registry = ();
372		479
373	delete $obj->{_attachment} unless @{ $obj->{_attachment} || [] };	480	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		481
375	for my $name (@{ $obj->{_attachment} || [] }) {	482	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	483	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	484	for (@$attach) {
378	my ($klass, @attach) = @$_;	485	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	486	_attach $registry, $klass, @attach;
380	}	487	}
381	} else {	488	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	489	warn "object uses attachment '$name' that is not available, postponing.\n";
383	}	490	}
384	}	491	}
385	}	492	}
386		493
387	sub object_freezer_save {	494	sub object_freezer_save {
388	my ($filename, $objs) = @_;	495	my ($filename, $rdata, $objs) = @_;
389		496
390	$filename .= ".pst";	497	if (length $$rdata) {
		498	warn sprintf "saving %s (%d,%d)\n",
		499	$filename, length $$rdata, scalar @$objs;
391		500
392	if (@$objs) {
393	open my $fh, ">:raw", "$filename~";	501	if (open my $fh, ">:raw", "$filename~") {
394	chmod $fh, SAVE_MODE;	502	chmod SAVE_MODE, $fh;
		503	syswrite $fh, $$rdata;
		504	close $fh;
		505
		506	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		507	chmod SAVE_MODE, $fh;
395	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	508	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
396	close $fh;	509	close $fh;
		510	rename "$filename.pst~", "$filename.pst";
		511	} else {
		512	unlink "$filename.pst";
		513	}
		514
397	rename "$filename~", $filename;	515	rename "$filename~", $filename;
		516	} else {
		517	warn "FATAL: $filename~: $!\n";
		518	}
398	} else {	519	} else {
399	unlink $filename;	520	unlink $filename;
		521	unlink "$filename.pst";
400	}	522	}
		523	}
		524
		525	sub object_freezer_as_string {
		526	my ($rdata, $objs) = @_;
		527
		528	use Data::Dumper;
		529
		530	$$rdata . Dumper $objs
401	}	531	}
402		532
403	sub object_thawer_load {	533	sub object_thawer_load {
404	my ($filename) = @_;	534	my ($filename) = @_;
405		535
		536	local $/;
		537
		538	my $av;
		539
		540	#TODO: use sysread etc.
		541	if (open my $data, "<:raw:perlio", $filename) {
		542	$data = <$data>;
406	open my $fh, "<:raw:perlio", "$filename.pst"	543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
407	or return;	544	$av = eval { (Storable::thaw <$pst>)->{objs} };
		545	}
		546	return ($data, $av);
		547	}
408		548
409	eval { local $/; (Storable::thaw <$fh>)->{objs} }	549	()
410	}	550	}
411		551
412	attach_to_objects	552	cf::object->attach (
413	prio => -1000000,	553	prio => -1000000,
414	on_clone => sub {	554	on_clone => sub {
415	my ($src, $dst) = @_;	555	my ($src, $dst) = @_;
416		556
417	@{$dst->registry} = @{$src->registry};	557	@{$dst->registry} = @{$src->registry};
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	},	563	},
424	;	564	);
425		565
426	#############################################################################	566	#############################################################################
427	# old plug-in events	567	# command handling &c
428		568
429	sub inject_event {	569	=item cf::register_command $name => \&callback($ob,$args);
430	my $extension = shift;
431	my $event_code = shift;
432		570
433	my $cb = $hook[$event_code]{$extension}	571	Register a callback for execution when the client sends the user command
434	or return;	572	$name.
435		573
436	&$cb	574	=cut
437	}
438
439	sub inject_global_event {
440	my $event = shift;
441
442	my $cb = $hook[$event]
443	or return;
444
445	List::Util::max map &$_, values %$cb
446	}
447
448	sub inject_command {
449	my ($name, $obj, $params) = @_;
450
451	for my $cmd (@{ $command{$name} }) {
452	$cmd->[1]->($obj, $params);
453	}
454
455	-1
456	}
457		575
458	sub register_command {	576	sub register_command {
459	my ($name, $time, $cb) = @_;	577	my ($name, $cb) = @_;
460		578
461	my $caller = caller;	579	my $caller = caller;
462	#warn "registering command '$name/$time' to '$caller'";	580	#warn "registering command '$name/$time' to '$caller'";
463		581
464	push @{ $command{$name} }, [$time, $cb, $caller];	582	push @{ $COMMAND{$name} }, [$caller, $cb];
465	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
466	}	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
467		593
468	sub register_extcmd {	594	sub register_extcmd {
469	my ($name, $cb) = @_;	595	my ($name, $cb) = @_;
470		596
471	my $caller = caller;	597	my $caller = caller;
472	#warn "registering extcmd '$name' to '$caller'";	598	#warn "registering extcmd '$name' to '$caller'";
473		599
474	$extcmd{$name} = [$cb, $caller];	600	$EXTCMD{$name} = [$cb, $caller];
475	}	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	);
476		634
477	sub register {	635	sub register {
478	my ($base, $pkg) = @_;	636	my ($base, $pkg) = @_;
479		637
480	#TODO	638	#TODO
…		…
499	. "#line 1 \"$path\"\n{\n"	657	. "#line 1 \"$path\"\n{\n"
500	. (do { local $/; <$fh> })	658	. (do { local $/; <$fh> })
501	. "\n};\n1";	659	. "\n};\n1";
502		660
503	eval $source	661	eval $source
504	or die "$path: $@";	662	or die $@ ? "$path: $@\n"
		663	: "extension disabled.\n";
505		664
506	push @exts, $pkg;	665	push @exts, $pkg;
507	$ext_pkg{$base} = $pkg;	666	$ext_pkg{$base} = $pkg;
508		667
509	# no strict 'refs';	668	# no strict 'refs';
…		…
522	# for my $idx (0 .. $#PLUGIN_EVENT) {	681	# for my $idx (0 .. $#PLUGIN_EVENT) {
523	# delete $hook[$idx]{$pkg};	682	# delete $hook[$idx]{$pkg};
524	# }	683	# }
525		684
526	# remove commands	685	# remove commands
527	for my $name (keys %command) {	686	for my $name (keys %COMMAND) {
528	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	687	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
529		688
530	if (@cb) {	689	if (@cb) {
531	$command{$name} = \@cb;	690	$COMMAND{$name} = \@cb;
532	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
533	} else {	691	} else {
534	delete $command{$name};
535	delete $COMMAND{"$name\000"};	692	delete $COMMAND{$name};
536	}	693	}
537	}	694	}
538		695
539	# remove extcmds	696	# remove extcmds
540	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	697	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
541	delete $extcmd{$name};	698	delete $EXTCMD{$name};
542	}	699	}
543		700
544	if (my $cb = $pkg->can ("unload")) {	701	if (my $cb = $pkg->can ("unload")) {
545	eval {	702	eval {
546	$cb->($pkg);	703	$cb->($pkg);
…		…
550		707
551	Symbol::delete_package $pkg;	708	Symbol::delete_package $pkg;
552	}	709	}
553		710
554	sub load_extensions {	711	sub load_extensions {
555	my $LIBDIR = maps_directory "perl";
556
557	for my $ext (<$LIBDIR/*.ext>) {	712	for my $ext (<$LIBDIR/*.ext>) {
558	next unless -r $ext;	713	next unless -r $ext;
559	eval {	714	eval {
560	load_extension $ext;	715	load_extension $ext;
561	1	716	1
562	} or warn "$ext not loaded: $@";	717	} or warn "$ext not loaded: $@";
563	}	718	}
564	}	719	}
565		720
566	sub _perl_reload(&) {
567	my ($msg) = @_;
568
569	$msg->("reloading...");
570
571	eval {
572	# 1. cancel all watchers
573	$_->cancel for Event::all_watchers;
574
575	# 2. unload all extensions
576	for (@exts) {
577	$msg->("unloading <$_>");
578	unload_extension $_;
579	}
580
581	# 3. unload all modules loaded from $LIBDIR
582	while (my ($k, $v) = each %INC) {
583	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
584
585	$msg->("removing <$k>");
586	delete $INC{$k};
587
588	$k =~ s/\.pm$//;
589	$k =~ s/\//::/g;
590
591	if (my $cb = $k->can ("unload_module")) {
592	$cb->();
593	}
594
595	Symbol::delete_package $k;
596	}
597
598	# 4. get rid of safe::, as good as possible
599	Symbol::delete_package "safe::$_"
600	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
601
602	# 5. remove register_script_function callbacks
603	# TODO
604
605	# 6. unload cf.pm "a bit"
606	delete $INC{"cf.pm"};
607
608	# don't, removes xs symbols, too,
609	# and global variables created in xs
610	#Symbol::delete_package __PACKAGE__;
611
612	# 7. reload cf.pm
613	$msg->("reloading cf.pm");
614	require cf;
615	};
616	$msg->($@) if $@;
617
618	$msg->("reloaded");
619	};
620
621	sub perl_reload() {
622	_perl_reload {
623	warn $_[0];
624	print "$_[0]\n";
625	};
626	}
627
628	register_command "perl-reload", 0, sub {
629	my ($who, $arg) = @_;
630
631	if ($who->flag (FLAG_WIZ)) {
632	_perl_reload {
633	warn $_[0];
634	$who->message ($_[0]);
635	};
636	}
637	};
638
639	#############################################################################
640	# extcmd framework, basically convert ext <msg>
641	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
642
643	attach_to_players
644	on_extcmd => sub {
645	my ($pl, $buf) = @_;
646
647	my $msg = eval { from_json $buf };
648
649	if (ref $msg) {
650	if (my $cb = $extcmd{$msg->{msgtype}}) {
651	if (my %reply = $cb->[0]->($pl, $msg)) {
652	$pl->ext_reply ($msg->{msgid}, %reply);
653	}
654	}
655	} else {
656	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
657	}
658
659	cf::override;
660	},
661	;
662
663	#############################################################################	721	#############################################################################
664	# load/save/clean perl data associated with a map	722	# load/save/clean perl data associated with a map
665		723
666	*cf::mapsupport::on_clean = sub {	724	*cf::mapsupport::on_clean = sub {
667	my ($map) = @_;	725	my ($map) = @_;
668		726
669	my $path = $map->tmpname;	727	my $path = $map->tmpname;
670	defined $path or return;	728	defined $path or return;
671		729
672	unlink "$path.cfperl";
673	unlink "$path.pst";	730	unlink "$path.pst";
674	};	731	};
675		732
676	*cf::mapsupport::on_swapin =
677	*cf::mapsupport::on_load = sub {
678	my ($map) = @_;
679
680	my $path = $map->tmpname;
681	$path = $map->path unless defined $path;
682
683	open my $fh, "<:raw", "$path.cfperl"
684	or return; # no perl data
685
686	my $data = Storable::thaw do { local $/; <$fh> };
687
688	$data->{version} <= 1
689	or return; # too new
690
691	$map->_set_obs ($data->{obs});
692	};
693
694	attach_to_maps prio => -10000, package => cf::mapsupport::;	733	cf::map->attach (prio => -10000, package => cf::mapsupport::);
695		734
696	#############################################################################	735	#############################################################################
697	# load/save perl data associated with player->ob objects	736	# load/save perl data associated with player->ob objects
698		737
699	sub all_objects(@) {	738	sub all_objects(@) {
700	@_, map all_objects ($_->inv), @_	739	@_, map all_objects ($_->inv), @_
701	}	740	}
702		741
703	attach_to_players	742	# TODO: compatibility cruft, remove when no longer needed
		743	cf::player->attach (
704	on_load => sub {	744	on_load => sub {
705	my ($pl, $path) = @_;	745	my ($pl, $path) = @_;
706		746
707	for my $o (all_objects $pl->ob) {	747	for my $o (all_objects $pl->ob) {
708	if (my $value = $o->get_ob_key_value ("_perl_data")) {	748	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
710		750
711	%$o = %{ Storable::thaw pack "H*", $value };	751	%$o = %{ Storable::thaw pack "H*", $value };
712	}	752	}
713	}	753	}
714	},	754	},
715	;	755	);
716		756
717	#############################################################################	757	#############################################################################
718	# 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
719		766
720	=item cf::player::exists $login	767	=item cf::player::exists $login
721		768
722	Returns true when the given account exists.	769	Returns true when the given account exists.
723		770
…		…
726	sub cf::player::exists($) {	773	sub cf::player::exists($) {
727	cf::player::find $_[0]	774	cf::player::find $_[0]
728	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;
729	}	776	}
730		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
731	=item $player->reply ($npc, $msg[, $flags])	798	=item $player_object->reply ($npc, $msg[, $flags])
732		799
733	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	800	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
734	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
735	dialogue with the given NPC character.	802	dialogue with the given NPC character.
736		803
737	=cut	804	=cut
738		805
739	# rough implementation of a future "reply" method that works	806	# rough implementation of a future "reply" method that works
740	# with dialog boxes.	807	# with dialog boxes.
		808	#TODO: the first argument must go, split into a $npc->reply_to ( method
741	sub cf::object::player::reply($$$;$) {	809	sub cf::object::player::reply($$$;$) {
742	my ($self, $npc, $msg, $flags) = @_;	810	my ($self, $npc, $msg, $flags) = @_;
743		811
744	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	812	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
745		813
…		…
749	$msg = $npc->name . " says: $msg" if $npc;	817	$msg = $npc->name . " says: $msg" if $npc;
750	$self->message ($msg, $flags);	818	$self->message ($msg, $flags);
751	}	819	}
752	}	820	}
753		821
754	=item $player->ext_reply ($msgid, $msgtype, %msg)	822	=item $player_object->may ("access")
755		823
756	Sends an ext reply to the player.	824	Returns wether the given player is authorized to access resource "access"
		825	(e.g. "command_wizcast").
757		826
758	=cut	827	=cut
759		828
760	sub cf::player::ext_reply($$$%) {	829	sub cf::object::player::may {
761	my ($self, $id, %msg) = @_;	830	my ($self, $access) = @_;
762		831
763	$msg{msgid} = $id;	832	$self->flag (cf::FLAG_WIZ) ||
764		833	(ref $cf::CFG{"may_$access"}
765	$self->send ("ext " . to_json \%msg);	834	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		835	: $cf::CFG{"may_$access"})
766	}	836	}
767		837
768	#############################################################################	838	=head3 cf::client
769	# 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
770		918
771	our $safe = new Safe "safe";	919	our $safe = new Safe "safe";
772	our $safe_hole = new Safe::Hole;	920	our $safe_hole = new Safe::Hole;
773		921
774	$SIG{FPE} = 'IGNORE';	922	$SIG{FPE} = 'IGNORE';
775		923
776	$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));
777		925
778	# here we export the classes and methods available to script code	926	# here we export the classes and methods available to script code
779		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
780	for (	939	for (
781	["cf::object" => qw(contr pay_amount pay_player)],	940	["cf::object" => qw(contr pay_amount pay_player map)],
782	["cf::object::player" => qw(player)],	941	["cf::object::player" => qw(player)],
783	["cf::player" => qw(peaceful)],	942	["cf::player" => qw(peaceful)],
		943	["cf::map" => qw(trigger)],
784	) {	944	) {
785	no strict 'refs';	945	no strict 'refs';
786	my ($pkg, @funs) = @$_;	946	my ($pkg, @funs) = @$_;
787	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	947	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
788	for @funs;	948	for @funs;
789	}	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
790		962
791	sub safe_eval($;@) {	963	sub safe_eval($;@) {
792	my ($code, %vars) = @_;	964	my ($code, %vars) = @_;
793		965
794	my $qcode = $code;	966	my $qcode = $code;
…		…
817	}	989	}
818		990
819	wantarray ? @res : $res[0]	991	wantarray ? @res : $res[0]
820	}	992	}
821		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
822	sub register_script_function {	1009	sub register_script_function {
823	my ($fun, $cb) = @_;	1010	my ($fun, $cb) = @_;
824		1011
825	no strict 'refs';	1012	no strict 'refs';
826	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1013	*{"safe::$fun"} = $safe_hole->wrap ($cb);
827	}	1014	}
828		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
829	#############################################################################	1125	#############################################################################
830	# the server's main()	1126	# the server's main()
831		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
832	sub main {	1136	sub main {
		1137	cfg_load;
		1138	db_load;
		1139	load_extensions;
833	Event::loop;	1140	Event::loop;
834	}	1141	}
835		1142
836	#############################################################################	1143	#############################################################################
837	# initialisation	1144	# initialisation
838		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
839	register "<global>", __PACKAGE__;	1225	register "<global>", __PACKAGE__;
840		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
841	unshift @INC, $LIBDIR;	1238	unshift @INC, $LIBDIR;
842		1239
843	load_extensions;
844
845	$TICK_WATCHER = Event->timer (	1240	$TICK_WATCHER = Event->timer (
846	prio => 1,	1241	prio => 0,
847	at => $NEXT_TICK || 1,	1242	at => $NEXT_TICK || 1,
		1243	data => WF_AUTOCANCEL,
848	cb => sub {	1244	cb => sub {
849	cf::server_tick; # one server iteration	1245	cf::server_tick; # one server iteration
850		1246
851	my $NOW = Event::time;	1247	my $NOW = Event::time;
852	$NEXT_TICK += $TICK;	1248	$NEXT_TICK += $TICK;
853		1249
854	# if we are delayed by four ticks, skip them all	1250	# if we are delayed by four ticks or more, skip them all
855	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1251	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
856		1252
857	$TICK_WATCHER->at ($NEXT_TICK);	1253	$TICK_WATCHER->at ($NEXT_TICK);
858	$TICK_WATCHER->start;	1254	$TICK_WATCHER->start;
859	},	1255	},
860	);	1256	);
861		1257
862	_reload_2;	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);
863		1265
864	1	1266	1
865		1267

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