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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.52 by root, Mon Aug 28 16:52:51 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 cf::living)) {	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
179	Register an attachment by name through which objects can refer to this
180	attachment.
181
182	=item cf:register_map_attachment $name, ...
183
184	Register an attachment by name through which maps can refer to this
185	attachment.
186		253
187	=cut	254	=cut
188		255
189	# the following variables are defined in .xs and must not be re-created	256	# the following variables are defined in .xs and must not be re-created
190	our @CB_GLOBAL = (); # registry for all global events	257	our @CB_GLOBAL = (); # registry for all global events
191	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
192	our @CB_PLAYER = ();	259	our @CB_PLAYER = ();
		260	our @CB_CLIENT = ();
193	our @CB_TYPE = (); # registry for type (cf-object class) based events	261	our @CB_TYPE = (); # registry for type (cf-object class) based events
194	our @CB_MAP = ();	262	our @CB_MAP = ();
195		263
196	my %attachment;	264	my %attachment;
197		265
198	sub _attach_cb($\%$$$) {	266	sub _attach_cb($$$$) {
199	my ($registry, $undo, $event, $prio, $cb) = @_;	267	my ($registry, $event, $prio, $cb) = @_;
200		268
201	use sort 'stable';	269	use sort 'stable';
202		270
203	$cb = [$prio, $cb];	271	$cb = [$prio, $cb];
204		272
205	@{$registry->[$event]} = sort	273	@{$registry->[$event]} = sort
206	{ $a->[0] cmp $b->[0] }	274	{ $a->[0] cmp $b->[0] }
207	@{$registry->[$event] || []}, $cb;	275	@{$registry->[$event] || []}, $cb;
208
209	push @{$undo->{cb}}, [$event, $cb];
210	}	276	}
211		277
212	# attach handles attaching event callbacks	278	# attach handles attaching event callbacks
213	# 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
214	# registry (== where the callback attaches to).	280	# registry (== where the callback attaches to).
215	sub _attach(\@$@) {	281	sub _attach {
216	my ($registry, $klass, @arg) = @_;	282	my ($registry, $klass, @arg) = @_;
217		283
		284	my $object_type;
218	my $prio = 0;	285	my $prio = 0;
219
220	my %undo = (
221	registry => $registry,
222	cb => [],
223	);
224
225	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;
226		287
227	while (@arg) {	288	while (@arg) {
228	my $type = shift @arg;	289	my $type = shift @arg;
229		290
230	if ($type eq "prio") {	291	if ($type eq "prio") {
231	$prio = shift @arg;	292	$prio = shift @arg;
232		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
233	} elsif ($type eq "package") {	303	} elsif ($type eq "package") {
234	my $pkg = shift @arg;	304	my $pkg = shift @arg;
235		305
236	while (my ($name, $id) = each %cb_id) {	306	while (my ($name, $id) = each %cb_id) {
237	if (my $cb = $pkg->can ($name)) {	307	if (my $cb = $pkg->can ($name)) {
238	_attach_cb $registry, %undo, $id, $prio, $cb;	308	_attach_cb $registry, $id, $prio, $cb;
239	}	309	}
240	}	310	}
241		311
242	} elsif (exists $cb_id{$type}) {	312	} elsif (exists $cb_id{$type}) {
243	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	313	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
244		314
245	} elsif (ref $type) {	315	} elsif (ref $type) {
246	warn "attaching objects not supported, ignoring.\n";	316	warn "attaching objects not supported, ignoring.\n";
247		317
248	} else {	318	} else {
249	shift @arg;	319	shift @arg;
250	warn "attach argument '$type' not supported, ignoring.\n";	320	warn "attach argument '$type' not supported, ignoring.\n";
251	}	321	}
252	}	322	}
253
254	\%undo
255	}	323	}
256		324
257	sub _attach_attachment {	325	sub _object_attach {
258	my ($obj, $name, %arg) = @_;	326	my ($obj, $name, %arg) = @_;
259		327
260	my $res;	328	return if exists $obj->{_attachment}{$name};
261		329
262	if (my $attach = $attachment{$name}) {	330	if (my $attach = $attachment{$name}) {
263	my $registry = $obj->registry;	331	my $registry = $obj->registry;
264		332
265	for (@$attach) {	333	for (@$attach) {
266	my ($klass, @attach) = @$_;	334	my ($klass, @attach) = @$_;
267	$res = _attach @$registry, $klass, @attach;	335	_attach $registry, $klass, @attach;
268	}	336	}
269		337
270	$obj->{$name} = \%arg;	338	$obj->{$name} = \%arg;
271	} else {	339	} else {
272	warn "object uses attachment '$name' that is not available, postponing.\n";	340	warn "object uses attachment '$name' that is not available, postponing.\n";
273	}	341	}
274		342
275	$obj->{_attachment}{$name} = undef;	343	$obj->{_attachment}{$name} = undef;
276
277	$res->{attachment} = $name;
278	$res
279	}	344	}
280		345
281	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 {
282	my ($obj, $name, %arg) = @_;	356	my ($obj, $name) = @_;
283		357
284	_attach_attachment $obj, $name, %arg;	358	if (ref $obj) {
285	}	359	delete $obj->{_attachment}{$name};
		360	reattach ($obj);
		361	} else {
		362	Carp::croak "cannot, currently, detach class attachments";
		363	}
		364	};
286		365
287	sub cf::player::attach {	366	sub cf::attachable::attached {
288	my ($obj, $name, %arg) = @_;	367	my ($obj, $name) = @_;
289		368
290	_attach_attachment $obj, $name, %arg;	369	exists $obj->{_attachment}{$name}
291	}	370	}
292		371
293	sub cf::map::attach {	372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
294	my ($obj, $name, %arg) = @_;	373	eval "#line " . __LINE__ . " 'cf.pm'
		374	sub cf::\L$klass\E::_attach_registry {
		375	(\\\@CB_$klass, KLASS_$klass)
		376	}
295		377
296	_attach_attachment $obj, $name, %arg;	378	sub cf::\L$klass\E::attachment {
297	}
298
299	sub attach_global {
300	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
301	}
302
303	sub attach_to_type {
304	my $type = shift;
305	my $subtype = shift;
306
307	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
308	}
309
310	sub attach_to_objects {
311	_attach @CB_OBJECT, KLASS_OBJECT, @_
312	}
313
314	sub attach_to_players {
315	_attach @CB_PLAYER, KLASS_PLAYER, @_
316	}
317
318	sub attach_to_maps {
319	_attach @CB_MAP, KLASS_MAP, @_
320	}
321
322	sub register_attachment {
323	my $name = shift;	379	my \$name = shift;
324		380
325	$attachment{$name} = [[KLASS_OBJECT, @_]];
326	}
327
328	sub register_map_attachment {
329	my $name = shift;
330
331	$attachment{$name} = [[KLASS_MAP, @_]];	381	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		382	}
		383	";
		384	die if $@;
332	}	385	}
333		386
334	our $override;	387	our $override;
335	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?
336		389
…		…
350	for (@$callbacks) {	403	for (@$callbacks) {
351	eval { &{$_->[1]} };	404	eval { &{$_->[1]} };
352		405
353	if ($@) {	406	if ($@) {
354	warn "$@";	407	warn "$@";
355	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	408	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
356	override;	409	override;
357	}	410	}
358		411
359	return 1 if $override;	412	return 1 if $override;
360	}	413	}
361		414
362	0	415	0
363	}	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
364		457
365	#############################################################################	458	#############################################################################
366	# object support	459	# object support
367		460
368	sub instantiate {	461	sub instantiate {
…		…
388		481
389	for my $name (keys %{ $obj->{_attachment} || {} }) {	482	for my $name (keys %{ $obj->{_attachment} || {} }) {
390	if (my $attach = $attachment{$name}) {	483	if (my $attach = $attachment{$name}) {
391	for (@$attach) {	484	for (@$attach) {
392	my ($klass, @attach) = @$_;	485	my ($klass, @attach) = @$_;
393	_attach @$registry, $klass, @attach;	486	_attach $registry, $klass, @attach;
394	}	487	}
395	} else {	488	} else {
396	warn "object uses attachment '$name' that is not available, postponing.\n";	489	warn "object uses attachment '$name' that is not available, postponing.\n";
397	}	490	}
398	}	491	}
399	}	492	}
400		493
401	sub object_freezer_save {	494	sub object_freezer_save {
402	my ($filename, $objs) = @_;	495	my ($filename, $rdata, $objs) = @_;
403		496
404	if (@$objs) {	497	if (length $$rdata) {
		498	warn sprintf "saving %s (%d,%d)\n",
		499	$filename, length $$rdata, scalar @$objs;
		500
405	open my $fh, ">:raw", "$filename.pst~";	501	if (open my $fh, ">:raw", "$filename~") {
		502	chmod SAVE_MODE, $fh;
		503	syswrite $fh, $$rdata;
		504	close $fh;
		505
		506	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		507	chmod SAVE_MODE, $fh;
406	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	508	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
407	close $fh;	509	close $fh;
408	chmod SAVE_MODE, "$filename.pst~";
409	rename "$filename.pst~", "$filename.pst";	510	rename "$filename.pst~", "$filename.pst";
		511	} else {
		512	unlink "$filename.pst";
		513	}
		514
		515	rename "$filename~", $filename;
		516	} else {
		517	warn "FATAL: $filename~: $!\n";
		518	}
410	} else {	519	} else {
		520	unlink $filename;
411	unlink "$filename.pst";	521	unlink "$filename.pst";
412	}	522	}
		523	}
413		524
414	chmod SAVE_MODE, "$filename~";	525	sub object_freezer_as_string {
415	rename "$filename~", $filename;	526	my ($rdata, $objs) = @_;
		527
		528	use Data::Dumper;
		529
		530	$$rdata . Dumper $objs
416	}	531	}
417		532
418	sub object_thawer_load {	533	sub object_thawer_load {
419	my ($filename) = @_;	534	my ($filename) = @_;
420		535
		536	local $/;
		537
		538	my $av;
		539
		540	#TODO: use sysread etc.
		541	if (open my $data, "<:raw:perlio", $filename) {
		542	$data = <$data>;
421	open my $fh, "<:raw:perlio", "$filename.pst"	543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
422	or return;	544	$av = eval { (Storable::thaw <$pst>)->{objs} };
		545	}
		546	return ($data, $av);
		547	}
423		548
424	eval { local $/; (Storable::thaw <$fh>)->{objs} }	549	()
425	}	550	}
426		551
427	attach_to_objects	552	cf::object->attach (
428	prio => -1000000,	553	prio => -1000000,
429	on_clone => sub {	554	on_clone => sub {
430	my ($src, $dst) = @_;	555	my ($src, $dst) = @_;
431		556
432	@{$dst->registry} = @{$src->registry};	557	@{$dst->registry} = @{$src->registry};
…		…
434	%$dst = %$src;	559	%$dst = %$src;
435		560
436	%{$dst->{_attachment}} = %{$src->{_attachment}}	561	%{$dst->{_attachment}} = %{$src->{_attachment}}
437	if exists $src->{_attachment};	562	if exists $src->{_attachment};
438	},	563	},
439	;	564	);
440		565
441	#############################################################################	566	#############################################################################
442	# old plug-in events	567	# command handling &c
443		568
444	sub inject_event {	569	=item cf::register_command $name => \&callback($ob,$args);
445	my $extension = shift;
446	my $event_code = shift;
447		570
448	my $cb = $hook[$event_code]{$extension}	571	Register a callback for execution when the client sends the user command
449	or return;	572	$name.
450		573
451	&$cb	574	=cut
452	}
453
454	sub inject_global_event {
455	my $event = shift;
456
457	my $cb = $hook[$event]
458	or return;
459
460	List::Util::max map &$_, values %$cb
461	}
462
463	sub inject_command {
464	my ($name, $obj, $params) = @_;
465
466	for my $cmd (@{ $command{$name} }) {
467	$cmd->[1]->($obj, $params);
468	}
469
470	-1
471	}
472		575
473	sub register_command {	576	sub register_command {
474	my ($name, $time, $cb) = @_;	577	my ($name, $cb) = @_;
475		578
476	my $caller = caller;	579	my $caller = caller;
477	#warn "registering command '$name/$time' to '$caller'";	580	#warn "registering command '$name/$time' to '$caller'";
478		581
479	push @{ $command{$name} }, [$time, $cb, $caller];	582	push @{ $COMMAND{$name} }, [$caller, $cb];
480	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
481	}	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
482		593
483	sub register_extcmd {	594	sub register_extcmd {
484	my ($name, $cb) = @_;	595	my ($name, $cb) = @_;
485		596
486	my $caller = caller;	597	my $caller = caller;
487	#warn "registering extcmd '$name' to '$caller'";	598	#warn "registering extcmd '$name' to '$caller'";
488		599
489	$extcmd{$name} = [$cb, $caller];	600	$EXTCMD{$name} = [$cb, $caller];
490	}	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	);
491		634
492	sub register {	635	sub register {
493	my ($base, $pkg) = @_;	636	my ($base, $pkg) = @_;
494		637
495	#TODO	638	#TODO
…		…
514	. "#line 1 \"$path\"\n{\n"	657	. "#line 1 \"$path\"\n{\n"
515	. (do { local $/; <$fh> })	658	. (do { local $/; <$fh> })
516	. "\n};\n1";	659	. "\n};\n1";
517		660
518	eval $source	661	eval $source
519	or die "$path: $@";	662	or die $@ ? "$path: $@\n"
		663	: "extension disabled.\n";
520		664
521	push @exts, $pkg;	665	push @exts, $pkg;
522	$ext_pkg{$base} = $pkg;	666	$ext_pkg{$base} = $pkg;
523		667
524	# no strict 'refs';	668	# no strict 'refs';
…		…
537	# for my $idx (0 .. $#PLUGIN_EVENT) {	681	# for my $idx (0 .. $#PLUGIN_EVENT) {
538	# delete $hook[$idx]{$pkg};	682	# delete $hook[$idx]{$pkg};
539	# }	683	# }
540		684
541	# remove commands	685	# remove commands
542	for my $name (keys %command) {	686	for my $name (keys %COMMAND) {
543	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	687	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
544		688
545	if (@cb) {	689	if (@cb) {
546	$command{$name} = \@cb;	690	$COMMAND{$name} = \@cb;
547	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
548	} else {	691	} else {
549	delete $command{$name};
550	delete $COMMAND{"$name\000"};	692	delete $COMMAND{$name};
551	}	693	}
552	}	694	}
553		695
554	# remove extcmds	696	# remove extcmds
555	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	697	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
556	delete $extcmd{$name};	698	delete $EXTCMD{$name};
557	}	699	}
558		700
559	if (my $cb = $pkg->can ("unload")) {	701	if (my $cb = $pkg->can ("unload")) {
560	eval {	702	eval {
561	$cb->($pkg);	703	$cb->($pkg);
…		…
565		707
566	Symbol::delete_package $pkg;	708	Symbol::delete_package $pkg;
567	}	709	}
568		710
569	sub load_extensions {	711	sub load_extensions {
570	my $LIBDIR = maps_directory "perl";
571
572	for my $ext (<$LIBDIR/*.ext>) {	712	for my $ext (<$LIBDIR/*.ext>) {
573	next unless -r $ext;	713	next unless -r $ext;
574	eval {	714	eval {
575	load_extension $ext;	715	load_extension $ext;
576	1	716	1
577	} or warn "$ext not loaded: $@";	717	} or warn "$ext not loaded: $@";
578	}	718	}
579	}	719	}
580		720
581	sub _perl_reload(&) {
582	my ($msg) = @_;
583
584	$msg->("reloading...");
585
586	eval {
587	# 1. cancel all watchers
588	$_->cancel for Event::all_watchers;
589
590	# 2. unload all extensions
591	for (@exts) {
592	$msg->("unloading <$_>");
593	unload_extension $_;
594	}
595
596	# 3. unload all modules loaded from $LIBDIR
597	while (my ($k, $v) = each %INC) {
598	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
599
600	$msg->("removing <$k>");
601	delete $INC{$k};
602
603	$k =~ s/\.pm$//;
604	$k =~ s/\//::/g;
605
606	if (my $cb = $k->can ("unload_module")) {
607	$cb->();
608	}
609
610	Symbol::delete_package $k;
611	}
612
613	# 4. get rid of safe::, as good as possible
614	Symbol::delete_package "safe::$_"
615	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
616
617	# 5. remove register_script_function callbacks
618	# TODO
619
620	# 6. unload cf.pm "a bit"
621	delete $INC{"cf.pm"};
622
623	# don't, removes xs symbols, too,
624	# and global variables created in xs
625	#Symbol::delete_package __PACKAGE__;
626
627	# 7. reload cf.pm
628	$msg->("reloading cf.pm");
629	require cf;
630	};
631	$msg->($@) if $@;
632
633	$msg->("reloaded");
634	};
635
636	sub perl_reload() {
637	_perl_reload {
638	warn $_[0];
639	print "$_[0]\n";
640	};
641	}
642
643	register_command "perl-reload", 0, sub {
644	my ($who, $arg) = @_;
645
646	if ($who->flag (FLAG_WIZ)) {
647	_perl_reload {
648	warn $_[0];
649	$who->message ($_[0]);
650	};
651	}
652	};
653
654	#############################################################################
655	# extcmd framework, basically convert ext <msg>
656	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
657
658	attach_to_players
659	on_extcmd => sub {
660	my ($pl, $buf) = @_;
661
662	my $msg = eval { from_json $buf };
663
664	if (ref $msg) {
665	if (my $cb = $extcmd{$msg->{msgtype}}) {
666	if (my %reply = $cb->[0]->($pl, $msg)) {
667	$pl->ext_reply ($msg->{msgid}, %reply);
668	}
669	}
670	} else {
671	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
672	}
673
674	cf::override;
675	},
676	;
677
678	#############################################################################	721	#############################################################################
679	# load/save/clean perl data associated with a map	722	# load/save/clean perl data associated with a map
680		723
681	*cf::mapsupport::on_clean = sub {	724	*cf::mapsupport::on_clean = sub {
682	my ($map) = @_;	725	my ($map) = @_;
…		…
685	defined $path or return;	728	defined $path or return;
686		729
687	unlink "$path.pst";	730	unlink "$path.pst";
688	};	731	};
689		732
690	# old style persistent data, TODO: remove #d#
691	*cf::mapsupport::on_swapin =
692	*cf::mapsupport::on_load = sub {
693	my ($map) = @_;
694
695	my $path = $map->tmpname;
696	$path = $map->path unless defined $path;
697
698	open my $fh, "<:raw", "$path.cfperl"
699	or return; # no perl data
700
701	my $data = Storable::thaw do { local $/; <$fh> };
702
703	$data->{version} <= 1
704	or return; # too new
705
706	$map->_set_obs ($data->{obs});
707	$map->invoke (EVENT_MAP_UPGRADE);
708	};
709
710	attach_to_maps prio => -10000, package => cf::mapsupport::;	733	cf::map->attach (prio => -10000, package => cf::mapsupport::);
711		734
712	#############################################################################	735	#############################################################################
713	# load/save perl data associated with player->ob objects	736	# load/save perl data associated with player->ob objects
714		737
715	sub all_objects(@) {	738	sub all_objects(@) {
716	@_, map all_objects ($_->inv), @_	739	@_, map all_objects ($_->inv), @_
717	}	740	}
718		741
719	attach_to_players	742	# TODO: compatibility cruft, remove when no longer needed
		743	cf::player->attach (
720	on_load => sub {	744	on_load => sub {
721	my ($pl, $path) = @_;	745	my ($pl, $path) = @_;
722		746
723	for my $o (all_objects $pl->ob) {	747	for my $o (all_objects $pl->ob) {
724	if (my $value = $o->get_ob_key_value ("_perl_data")) {	748	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
726		750
727	%$o = %{ Storable::thaw pack "H*", $value };	751	%$o = %{ Storable::thaw pack "H*", $value };
728	}	752	}
729	}	753	}
730	},	754	},
731	;	755	);
732		756
733	#############################################################################	757	#############################################################################
734	# 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
735		766
736	=item cf::player::exists $login	767	=item cf::player::exists $login
737		768
738	Returns true when the given account exists.	769	Returns true when the given account exists.
739		770
…		…
742	sub cf::player::exists($) {	773	sub cf::player::exists($) {
743	cf::player::find $_[0]	774	cf::player::find $_[0]
744	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;
745	}	776	}
746		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
747	=item $player->reply ($npc, $msg[, $flags])	798	=item $player_object->reply ($npc, $msg[, $flags])
748		799
749	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	800	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
750	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
751	dialogue with the given NPC character.	802	dialogue with the given NPC character.
752		803
753	=cut	804	=cut
754		805
755	# rough implementation of a future "reply" method that works	806	# rough implementation of a future "reply" method that works
756	# with dialog boxes.	807	# with dialog boxes.
		808	#TODO: the first argument must go, split into a $npc->reply_to ( method
757	sub cf::object::player::reply($$$;$) {	809	sub cf::object::player::reply($$$;$) {
758	my ($self, $npc, $msg, $flags) = @_;	810	my ($self, $npc, $msg, $flags) = @_;
759		811
760	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	812	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
761		813
…		…
765	$msg = $npc->name . " says: $msg" if $npc;	817	$msg = $npc->name . " says: $msg" if $npc;
766	$self->message ($msg, $flags);	818	$self->message ($msg, $flags);
767	}	819	}
768	}	820	}
769		821
770	=item $player->ext_reply ($msgid, $msgtype, %msg)	822	=item $player_object->may ("access")
771		823
772	Sends an ext reply to the player.	824	Returns wether the given player is authorized to access resource "access"
		825	(e.g. "command_wizcast").
773		826
774	=cut	827	=cut
775		828
776	sub cf::player::ext_reply($$$%) {	829	sub cf::object::player::may {
777	my ($self, $id, %msg) = @_;	830	my ($self, $access) = @_;
778		831
779	$msg{msgid} = $id;	832	$self->flag (cf::FLAG_WIZ) ||
780		833	(ref $cf::CFG{"may_$access"}
781	$self->send ("ext " . to_json \%msg);	834	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		835	: $cf::CFG{"may_$access"})
782	}	836	}
783		837
784	#############################################################################	838	=head3 cf::client
785	# 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
786		918
787	our $safe = new Safe "safe";	919	our $safe = new Safe "safe";
788	our $safe_hole = new Safe::Hole;	920	our $safe_hole = new Safe::Hole;
789		921
790	$SIG{FPE} = 'IGNORE';	922	$SIG{FPE} = 'IGNORE';
791		923
792	$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));
793		925
794	# here we export the classes and methods available to script code	926	# here we export the classes and methods available to script code
795		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
796	for (	939	for (
797	["cf::object" => qw(contr pay_amount pay_player)],	940	["cf::object" => qw(contr pay_amount pay_player map)],
798	["cf::object::player" => qw(player)],	941	["cf::object::player" => qw(player)],
799	["cf::player" => qw(peaceful)],	942	["cf::player" => qw(peaceful)],
		943	["cf::map" => qw(trigger)],
800	) {	944	) {
801	no strict 'refs';	945	no strict 'refs';
802	my ($pkg, @funs) = @$_;	946	my ($pkg, @funs) = @$_;
803	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	947	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
804	for @funs;	948	for @funs;
805	}	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
806		962
807	sub safe_eval($;@) {	963	sub safe_eval($;@) {
808	my ($code, %vars) = @_;	964	my ($code, %vars) = @_;
809		965
810	my $qcode = $code;	966	my $qcode = $code;
…		…
833	}	989	}
834		990
835	wantarray ? @res : $res[0]	991	wantarray ? @res : $res[0]
836	}	992	}
837		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
838	sub register_script_function {	1009	sub register_script_function {
839	my ($fun, $cb) = @_;	1010	my ($fun, $cb) = @_;
840		1011
841	no strict 'refs';	1012	no strict 'refs';
842	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1013	*{"safe::$fun"} = $safe_hole->wrap ($cb);
843	}	1014	}
844		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
845	#############################################################################	1125	#############################################################################
846	# the server's main()	1126	# the server's main()
847		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
848	sub main {	1136	sub main {
		1137	cfg_load;
		1138	db_load;
		1139	load_extensions;
849	Event::loop;	1140	Event::loop;
850	}	1141	}
851		1142
852	#############################################################################	1143	#############################################################################
853	# initialisation	1144	# initialisation
854		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
855	register "<global>", __PACKAGE__;	1225	register "<global>", __PACKAGE__;
856		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
857	unshift @INC, $LIBDIR;	1238	unshift @INC, $LIBDIR;
858		1239
859	load_extensions;
860
861	$TICK_WATCHER = Event->timer (	1240	$TICK_WATCHER = Event->timer (
862	prio => 1,	1241	prio => 0,
863	at => $NEXT_TICK || 1,	1242	at => $NEXT_TICK || 1,
		1243	data => WF_AUTOCANCEL,
864	cb => sub {	1244	cb => sub {
865	cf::server_tick; # one server iteration	1245	cf::server_tick; # one server iteration
866		1246
867	my $NOW = Event::time;	1247	my $NOW = Event::time;
868	$NEXT_TICK += $TICK;	1248	$NEXT_TICK += $TICK;
869		1249
870	# if we are delayed by four ticks, skip them all	1250	# if we are delayed by four ticks or more, skip them all
871	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1251	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
872		1252
873	$TICK_WATCHER->at ($NEXT_TICK);	1253	$TICK_WATCHER->at ($NEXT_TICK);
874	$TICK_WATCHER->start;	1254	$TICK_WATCHER->start;
875	},	1255	},
876	);	1256	);
877		1257
878	_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);
879		1265
880	1	1266	1
881		1267

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