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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC vs.
Revision 1.184 by root, Fri Jan 19 22:47:57 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.4 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
		23	use IO::AIO 2.32 ();
10	use YAML::Syck ();	24	use YAML::Syck ();
11	use Time::HiRes;	25	use Time::HiRes;
12	use Event;	26
13	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
		28
		29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
14		30
15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
16	$YAML::Syck::ImplicitUnicode = 1;	32	$YAML::Syck::ImplicitUnicode = 1;
17		33
18	use strict;	34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
19		35
20	_init_vars;
21
22	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
23	our @EVENT;	44	our @EVENT;
24	our $LIBDIR = maps_directory "perl";	45	our $LIBDIR = datadir . "/ext";
25		46
26	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
27	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
28	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
29		53
30	our %CFG;	54	our %CFG;
31		55
32	our $uptime;	56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
33		58
34	$uptime ||= time;	59	our %PLAYER; # all users
		60	our %MAP; # all maps
		61	our $LINK_MAP; # the special {link} map, which is always available
		62	our $RANDOM_MAPS = cf::localdir . "/random";
		63
		64	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		65	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		66
		67	# used to convert map paths into valid unix filenames by replacing / by ∕
		68	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		69
		70	binmode STDOUT;
		71	binmode STDERR;
		72
		73	# read virtual server time, if available
		74	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		75	open my $fh, "<", cf::localdir . "/runtime"
		76	or die "unable to read runtime file: $!";
		77	$RUNTIME = <$fh> + 0.;
		78	}
		79
		80	mkdir cf::localdir;
		81	mkdir cf::localdir . "/" . cf::playerdir;
		82	mkdir cf::localdir . "/" . cf::tmpdir;
		83	mkdir cf::localdir . "/" . cf::uniquedir;
		84	mkdir $RANDOM_MAPS;
		85
		86	our $EMERGENCY_POSITION;
35		87
36	#############################################################################	88	#############################################################################
37		89
38	=head2 GLOBAL VARIABLES	90	=head2 GLOBAL VARIABLES
39		91
40	=over 4	92	=over 4
		93
		94	=item $cf::UPTIME
		95
		96	The timestamp of the server start (so not actually an uptime).
		97
		98	=item $cf::RUNTIME
		99
		100	The time this server has run, starts at 0 and is increased by $cf::TICK on
		101	every server tick.
41		102
42	=item $cf::LIBDIR	103	=item $cf::LIBDIR
43		104
44	The perl library directory, where extensions and cf-specific modules can	105	The perl library directory, where extensions and cf-specific modules can
45	be found. It will be added to C<@INC> automatically.	106	be found. It will be added to C<@INC> automatically.
46		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
47	=item $cf::TICK	112	=item $cf::TICK
48		113
49	The interval between server ticks, in seconds.	114	The interval between server ticks, in seconds.
50		115
51	=item %cf::CFG	116	=item %cf::CFG
52		117
53	Configuration for the server, loaded from C</etc/crossfire/config>, or	118	Configuration for the server, loaded from C</etc/crossfire/config>, or
54	from wherever your confdir points to.	119	from wherever your confdir points to.
		120
		121	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		122
		123	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		124	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		125	processing has been done. Call C<< ->wait >> on them to maximise the
		126	window of cpu time available, or simply to synchronise to the server tick.
55		127
56	=back	128	=back
57		129
58	=cut	130	=cut
59		131
60	BEGIN {	132	BEGIN {
61	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
62	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
63	$msg .= "\n"	137	$msg .= "\n"
64	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
65		139
66	print STDERR "cfperl: $msg";
67	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
68	};	141	};
69	}	142	}
70		143
		144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		148	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		150
73	# we bless all objects into (empty) derived classes to force a method lookup	151	# we bless all objects into (empty) derived classes to force a method lookup
74	# within the Safe compartment.	152	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
76	no strict 'refs';	160	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	162	}
79		163
80	$Event::DIED = sub {	164	$Event::DIED = sub {
81	warn "error in event callback: @_";	165	warn "error in event callback: @_";
82	};	166	};
83		167
84	my %ext_pkg;
85	my @exts;
86	my @hook;
87	my %command;
88	my %extcmd;
89
90	=head2 UTILITY FUNCTIONS	168	=head2 UTILITY FUNCTIONS
91		169
92	=over 4	170	=over 4
93		171
		172	=item dumpval $ref
		173
94	=cut	174	=cut
		175
		176	sub dumpval {
		177	eval {
		178	local $SIG{__DIE__};
		179	my $d;
		180	if (1) {
		181	$d = new Data::Dumper([$_[0]], ["*var"]);
		182	$d->Terse(1);
		183	$d->Indent(2);
		184	$d->Quotekeys(0);
		185	$d->Useqq(1);
		186	#$d->Bless(...);
		187	$d->Seen($_[1]) if @_ > 1;
		188	$d = $d->Dump();
		189	}
		190	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		191	$d
		192	} || "[unable to dump $_[0]: '$@']";
		193	}
95		194
96	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
97		196
98	=item $ref = cf::from_json $json	197	=item $ref = cf::from_json $json
99		198
…		…
115	sub to_json($) {	214	sub to_json($) {
116	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
117	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
118	}	217	}
119		218
		219	=item cf::lock_wait $string
		220
		221	Wait until the given lock is available. See cf::lock_acquire.
		222
		223	=item my $lock = cf::lock_acquire $string
		224
		225	Wait until the given lock is available and then acquires it and returns
		226	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		227	for example when the coroutine gets canceled), the lock is automatically
		228	returned.
		229
		230	Lock names should begin with a unique identifier (for example, cf::map::find
		231	uses map_find and cf::map::load uses map_load).
		232
		233	=cut
		234
		235	our %LOCK;
		236
		237	sub lock_wait($) {
		238	my ($key) = @_;
		239
		240	# wait for lock, if any
		241	while ($LOCK{$key}) {
		242	push @{ $LOCK{$key} }, $Coro::current;
		243	Coro::schedule;
		244	}
		245	}
		246
		247	sub lock_acquire($) {
		248	my ($key) = @_;
		249
		250	# wait, to be sure we are not locked
		251	lock_wait $key;
		252
		253	$LOCK{$key} = [];
		254
		255	Coro::guard {
		256	# wake up all waiters, to be on the safe side
		257	$_->ready for @{ delete $LOCK{$key} };
		258	}
		259	}
		260
		261	sub freeze_mainloop {
		262	return unless $TICK_WATCHER->is_active;
		263
		264	my $guard = Coro::guard {
		265	$TICK_WATCHER->start;
		266	$WRITE_RUNTIME_WATCHER->start;
		267	};
		268	$WRITE_RUNTIME_WATCHER->stop;
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $runtime = cf::localdir . "/runtime";
		350
		351	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		352	or return;
		353
		354	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		355	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		356	and return;
		357
		358	aio_fsync $fh
		359	and return;
		360
		361	close $fh
		362	or return;
		363
		364	aio_rename "$runtime~", $runtime
		365	and return;
		366
		367	1
		368	}
		369
120	=back	370	=back
121		371
122	=cut	372	=cut
123		373
124	#############################################################################	374	#############################################################################
125		375
126	=head2 EVENTS AND OBJECT ATTACHMENTS	376	=head2 ATTACHABLE OBJECTS
		377
		378	Many objects in crossfire are so-called attachable objects. That means you can
		379	attach callbacks/event handlers (a collection of which is called an "attachment")
		380	to it. All such attachable objects support the following methods.
		381
		382	In the following description, CLASS can be any of C<global>, C<object>
		383	C<player>, C<client> or C<map> (i.e. the attachable objects in
		384	crossfire+).
127		385
128	=over 4	386	=over 4
129		387
130	=item $object->attach ($attachment, key => $value...)
131
132	=item $object->detach ($attachment)
133
134	Attach/detach a pre-registered attachment to an object.
135
136	=item $player->attach ($attachment, key => $value...)
137
138	=item $player->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to a player.
141
142	=item $map->attach ($attachment, key => $value...)	388	=item $attachable->attach ($attachment, key => $value...)
143		389
144	=item $map->detach ($attachment)	390	=item $attachable->detach ($attachment)
145		391
146	Attach/detach a pre-registered attachment to a map.	392	Attach/detach a pre-registered attachment to a specific object and give it
		393	the specified key/value pairs as arguments.
147		394
148	=item $bool = $object->attached ($name)	395	Example, attach a minesweeper attachment to the given object, making it a
		396	10x10 minesweeper game:
149		397
150	=item $bool = $player->attached ($name)	398	$obj->attach (minesweeper => width => 10, height => 10);
151		399
152	=item $bool = $map->attached ($name)	400	=item $bool = $attachable->attached ($name)
153		401
154	Checks wether the named attachment is currently attached to the object.	402	Checks wether the named attachment is currently attached to the object.
155		403
156	=item cf::attach_global ...	404	=item cf::CLASS->attach ...
157		405
158	Attach handlers for global events.	406	=item cf::CLASS->detach ...
159		407
160	This and all following C<attach_*>-functions expect any number of the	408	Define an anonymous attachment and attach it to all objects of the given
161	following handler/hook descriptions:	409	CLASS. See the next function for an explanation of its arguments.
		410
		411	You can attach to global events by using the C<cf::global> class.
		412
		413	Example, log all player logins:
		414
		415	cf::player->attach (
		416	on_login => sub {
		417	my ($pl) = @_;
		418	...
		419	},
		420	);
		421
		422	Example, attach to the jeweler skill:
		423
		424	cf::object->attach (
		425	type => cf::SKILL,
		426	subtype => cf::SK_JEWELER,
		427	on_use_skill => sub {
		428	my ($sk, $ob, $part, $dir, $msg) = @_;
		429	...
		430	},
		431	);
		432
		433	=item cf::CLASS::attachment $name, ...
		434
		435	Register an attachment by C<$name> through which attachable objects of the
		436	given CLASS can refer to this attachment.
		437
		438	Some classes such as crossfire maps and objects can specify attachments
		439	that are attached at load/instantiate time, thus the need for a name.
		440
		441	These calls expect any number of the following handler/hook descriptions:
162		442
163	=over 4	443	=over 4
164		444
165	=item prio => $number	445	=item prio => $number
166		446
…		…
168	by another C<prio> setting). Lower priority handlers get executed	448	by another C<prio> setting). Lower priority handlers get executed
169	earlier. The default priority is C<0>, and many built-in handlers are	449	earlier. The default priority is C<0>, and many built-in handlers are
170	registered at priority C<-1000>, so lower priorities should not be used	450	registered at priority C<-1000>, so lower priorities should not be used
171	unless you know what you are doing.	451	unless you know what you are doing.
172		452
		453	=item type => $type
		454
		455	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		456	given type of objects only (the additional parameter C<subtype> can be
		457	used to further limit to the given subtype).
		458
173	=item on_I<event> => \&cb	459	=item on_I<event> => \&cb
174		460
175	Call the given code reference whenever the named event happens (event is	461	Call the given code reference whenever the named event happens (event is
176	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	462	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
177	handlers are recognised generally depends on the type of object these	463	handlers are recognised generally depends on the type of object these
…		…
186	package and register them. Only handlers for eevents supported by the	472	package and register them. Only handlers for eevents supported by the
187	object/class are recognised.	473	object/class are recognised.
188		474
189	=back	475	=back
190		476
191	=item cf::attach_to_type $object_type, $subtype, ...	477	Example, define an attachment called "sockpuppet" that calls the given
		478	event handler when a monster attacks:
192		479
193	Attach handlers for a specific object type (e.g. TRANSPORT) and	480	cf::object::attachment sockpuppet =>
194	subtype. If C<$subtype> is zero or undef, matches all objects of the given	481	on_skill_attack => sub {
195	type.	482	my ($self, $victim) = @_;
196		483	...
197	=item cf::attach_to_objects ...
198
199	Attach handlers to all objects. Do not use this except for debugging or
200	very rare events, as handlers are (obviously) called for I<all> objects in
201	the game.
202
203	=item cf::attach_to_players ...
204
205	Attach handlers to all players.
206
207	=item cf::attach_to_maps ...
208
209	Attach handlers to all maps.
210
211	=item cf:register_attachment $name, ...
212
213	Register an attachment by name through which objects can refer to this
214	attachment.
215
216	=item cf:register_player_attachment $name, ...
217
218	Register an attachment by name through which players can refer to this
219	attachment.
220
221	=item cf:register_map_attachment $name, ...
222
223	Register an attachment by name through which maps can refer to this
224	attachment.
225
226	=cut
227
228	# the following variables are defined in .xs and must not be re-created
229	our @CB_GLOBAL = (); # registry for all global events
230	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
231	our @CB_PLAYER = ();
232	our @CB_TYPE = (); # registry for type (cf-object class) based events
233	our @CB_MAP = ();
234
235	my %attachment;
236
237	sub _attach_cb($\%$$$) {
238	my ($registry, $undo, $event, $prio, $cb) = @_;
239
240	use sort 'stable';
241
242	$cb = [$prio, $cb];
243
244	@{$registry->[$event]} = sort
245	{ $a->[0] cmp $b->[0] }
246	@{$registry->[$event] || []}, $cb;
247
248	push @{$undo->{cb}}, [$event, $cb];
249	}
250
251	# attach handles attaching event callbacks
252	# the only thing the caller has to do is pass the correct
253	# registry (== where the callback attaches to).
254	sub _attach(\@$@) {
255	my ($registry, $klass, @arg) = @_;
256
257	my $prio = 0;
258
259	my %undo = (
260	registry => $registry,
261	cb => [],
262	);
263
264	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
265
266	while (@arg) {
267	my $type = shift @arg;
268
269	if ($type eq "prio") {
270	$prio = shift @arg;
271
272	} elsif ($type eq "package") {
273	my $pkg = shift @arg;
274
275	while (my ($name, $id) = each %cb_id) {
276	if (my $cb = $pkg->can ($name)) {
277	_attach_cb $registry, %undo, $id, $prio, $cb;
278	}
279	}	484	}
280
281	} elsif (exists $cb_id{$type}) {
282	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
283
284	} elsif (ref $type) {
285	warn "attaching objects not supported, ignoring.\n";
286
287	} else {
288	shift @arg;
289	warn "attach argument '$type' not supported, ignoring.\n";
290	}
291	}
292
293	\%undo
294	}
295
296	sub _attach_attachment {
297	my ($obj, $name, %arg) = @_;
298
299	return if exists $obj->{_attachment}{$name};
300
301	my $res;
302
303	if (my $attach = $attachment{$name}) {
304	my $registry = $obj->registry;
305
306	for (@$attach) {
307	my ($klass, @attach) = @$_;
308	$res = _attach @$registry, $klass, @attach;
309	}
310
311	$obj->{$name} = \%arg;
312	} else {
313	warn "object uses attachment '$name' that is not available, postponing.\n";
314	}
315
316	$obj->{_attachment}{$name} = undef;
317
318	$res->{attachment} = $name;
319	$res
320	}
321
322	*cf::object::attach =
323	*cf::player::attach =
324	*cf::map::attach = sub {
325	my ($obj, $name, %arg) = @_;
326
327	_attach_attachment $obj, $name, %arg;
328	};
329
330	# all those should be optimised
331	*cf::object::detach =
332	*cf::player::detach =
333	*cf::map::detach = sub {
334	my ($obj, $name) = @_;
335
336	delete $obj->{_attachment}{$name};
337	reattach ($obj);
338	};
339
340	*cf::object::attached =
341	*cf::player::attached =
342	*cf::map::attached = sub {
343	my ($obj, $name) = @_;
344
345	exists $obj->{_attachment}{$name}
346	};
347
348	sub attach_global {
349	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
350	}
351
352	sub attach_to_type {
353	my $type = shift;
354	my $subtype = shift;
355
356	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
357	}
358
359	sub attach_to_objects {
360	_attach @CB_OBJECT, KLASS_OBJECT, @_
361	}
362
363	sub attach_to_players {
364	_attach @CB_PLAYER, KLASS_PLAYER, @_
365	}
366
367	sub attach_to_maps {
368	_attach @CB_MAP, KLASS_MAP, @_
369	}
370
371	sub register_attachment {
372	my $name = shift;
373
374	$attachment{$name} = [[KLASS_OBJECT, @_]];
375	}
376
377	sub register_player_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_PLAYER, @_]];
381	}
382
383	sub register_map_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_MAP, @_]];
387	}
388
389	our $override;
390	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
391
392	sub override {
393	$override = 1;
394	@invoke_results = ();
395	}
396
397	sub do_invoke {
398	my $event = shift;
399	my $callbacks = shift;
400
401	@invoke_results = ();
402
403	local $override;
404
405	for (@$callbacks) {
406	eval { &{$_->[1]} };
407
408	if ($@) {
409	warn "$@";
410	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
411	override;
412	}
413
414	return 1 if $override;
415	}
416
417	0	485	}
418	}
419		486
420	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	487	=item $attachable->valid
421
422	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
423
424	=item $bool = $player->invoke (EVENT_PLAYER_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 CORE OBJECTS
441
442	=over 4
443
444	=item $object->valid, $player->valid, $map->valid
445		488
446	Just because you have a perl object does not mean that the corresponding	489	Just because you have a perl object does not mean that the corresponding
447	C-level object still exists. If you try to access an object that has no	490	C-level object still exists. If you try to access an object that has no
448	valid C counterpart anymore you get an exception at runtime. This method	491	valid C counterpart anymore you get an exception at runtime. This method
449	can be used to test for existence of the C object part without causing an	492	can be used to test for existence of the C object part without causing an
450	exception.	493	exception.
451		494
		495	=cut
		496
		497	# the following variables are defined in .xs and must not be re-created
		498	our @CB_GLOBAL = (); # registry for all global events
		499	our @CB_ATTACHABLE = (); # registry for all attachables
		500	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		501	our @CB_PLAYER = ();
		502	our @CB_CLIENT = ();
		503	our @CB_TYPE = (); # registry for type (cf-object class) based events
		504	our @CB_MAP = ();
		505
		506	my %attachment;
		507
		508	sub cf::attachable::thawer_merge {
		509	# simply override everything except _meta
		510	local $_[0]{_meta};
		511	%{$_[0]} = %{$_[1]};
		512	}
		513
		514	sub _attach_cb($$$$) {
		515	my ($registry, $event, $prio, $cb) = @_;
		516
		517	use sort 'stable';
		518
		519	$cb = [$prio, $cb];
		520
		521	@{$registry->[$event]} = sort
		522	{ $a->[0] cmp $b->[0] }
		523	@{$registry->[$event] || []}, $cb;
		524	}
		525
		526	# hack
		527	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		528
		529	# attach handles attaching event callbacks
		530	# the only thing the caller has to do is pass the correct
		531	# registry (== where the callback attaches to).
		532	sub _attach {
		533	my ($registry, $klass, @arg) = @_;
		534
		535	my $object_type;
		536	my $prio = 0;
		537	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		538
		539	#TODO: get rid of this hack
		540	if ($attachable_klass{$klass}) {
		541	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		542	}
		543
		544	while (@arg) {
		545	my $type = shift @arg;
		546
		547	if ($type eq "prio") {
		548	$prio = shift @arg;
		549
		550	} elsif ($type eq "type") {
		551	$object_type = shift @arg;
		552	$registry = $CB_TYPE[$object_type] ||= [];
		553
		554	} elsif ($type eq "subtype") {
		555	defined $object_type or Carp::croak "subtype specified without type";
		556	my $object_subtype = shift @arg;
		557	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		558
		559	} elsif ($type eq "package") {
		560	my $pkg = shift @arg;
		561
		562	while (my ($name, $id) = each %cb_id) {
		563	if (my $cb = $pkg->can ($name)) {
		564	_attach_cb $registry, $id, $prio, $cb;
		565	}
		566	}
		567
		568	} elsif (exists $cb_id{$type}) {
		569	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		570
		571	} elsif (ref $type) {
		572	warn "attaching objects not supported, ignoring.\n";
		573
		574	} else {
		575	shift @arg;
		576	warn "attach argument '$type' not supported, ignoring.\n";
		577	}
		578	}
		579	}
		580
		581	sub _object_attach {
		582	my ($obj, $name, %arg) = @_;
		583
		584	return if exists $obj->{_attachment}{$name};
		585
		586	if (my $attach = $attachment{$name}) {
		587	my $registry = $obj->registry;
		588
		589	for (@$attach) {
		590	my ($klass, @attach) = @$_;
		591	_attach $registry, $klass, @attach;
		592	}
		593
		594	$obj->{$name} = \%arg;
		595	} else {
		596	warn "object uses attachment '$name' that is not available, postponing.\n";
		597	}
		598
		599	$obj->{_attachment}{$name} = undef;
		600	}
		601
		602	sub cf::attachable::attach {
		603	if (ref $_[0]) {
		604	_object_attach @_;
		605	} else {
		606	_attach shift->_attach_registry, @_;
		607	}
		608	};
		609
		610	# all those should be optimised
		611	sub cf::attachable::detach {
		612	my ($obj, $name) = @_;
		613
		614	if (ref $obj) {
		615	delete $obj->{_attachment}{$name};
		616	reattach ($obj);
		617	} else {
		618	Carp::croak "cannot, currently, detach class attachments";
		619	}
		620	};
		621
		622	sub cf::attachable::attached {
		623	my ($obj, $name) = @_;
		624
		625	exists $obj->{_attachment}{$name}
		626	}
		627
		628	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		629	eval "#line " . __LINE__ . " 'cf.pm'
		630	sub cf::\L$klass\E::_attach_registry {
		631	(\\\@CB_$klass, KLASS_$klass)
		632	}
		633
		634	sub cf::\L$klass\E::attachment {
		635	my \$name = shift;
		636
		637	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		638	}
		639	";
		640	die if $@;
		641	}
		642
		643	our $override;
		644	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		645
		646	sub override {
		647	$override = 1;
		648	@invoke_results = ();
		649	}
		650
		651	sub do_invoke {
		652	my $event = shift;
		653	my $callbacks = shift;
		654
		655	@invoke_results = ();
		656
		657	local $override;
		658
		659	for (@$callbacks) {
		660	eval { &{$_->[1]} };
		661
		662	if ($@) {
		663	warn "$@";
		664	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		665	override;
		666	}
		667
		668	return 1 if $override;
		669	}
		670
		671	0
		672	}
		673
		674	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		675
		676	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		677
		678	Generate an object-specific event with the given arguments.
		679
		680	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		681	removed in future versions), and there is no public API to access override
		682	results (if you must, access C<@cf::invoke_results> directly).
		683
452	=back	684	=back
453		685
454	=cut	686	=cut
455
456	*cf::object::valid =
457	*cf::player::valid =
458	*cf::map::valid = \&cf::_valid;
459		687
460	#############################################################################	688	#############################################################################
461	# object support	689	# object support
462		690
463	sub instantiate {
464	my ($obj, $data) = @_;
465
466	$data = from_json $data;
467
468	for (@$data) {
469	my ($name, $args) = @$_;
470
471	$obj->attach ($name, %{$args || {} });
472	}
473	}
474
475	# basically do the same as instantiate, without calling instantiate
476	sub reattach {	691	sub reattach {
		692	# basically do the same as instantiate, without calling instantiate
477	my ($obj) = @_;	693	my ($obj) = @_;
		694
		695	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		696
478	my $registry = $obj->registry;	697	my $registry = $obj->registry;
479		698
480	@$registry = ();	699	@$registry = ();
481		700
482	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	701	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
483		702
484	for my $name (keys %{ $obj->{_attachment} || {} }) {	703	for my $name (keys %{ $obj->{_attachment} || {} }) {
485	if (my $attach = $attachment{$name}) {	704	if (my $attach = $attachment{$name}) {
486	for (@$attach) {	705	for (@$attach) {
487	my ($klass, @attach) = @$_;	706	my ($klass, @attach) = @$_;
488	_attach @$registry, $klass, @attach;	707	_attach $registry, $klass, @attach;
489	}	708	}
490	} else {	709	} else {
491	warn "object uses attachment '$name' that is not available, postponing.\n";	710	warn "object uses attachment '$name' that is not available, postponing.\n";
492	}	711	}
493	}	712	}
494	}	713	}
495		714
496	sub object_freezer_save {	715	cf::attachable->attach (
497	my ($filename, $rdata, $objs) = @_;
498
499	if (length $$rdata) {
500	warn sprintf "saving %s (%d,%d)\n",
501	$filename, length $$rdata, scalar @$objs;
502
503	if (open my $fh, ">:raw", "$filename~") {
504	chmod SAVE_MODE, $fh;
505	syswrite $fh, $$rdata;
506	close $fh;
507
508	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
509	chmod SAVE_MODE, $fh;
510	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
511	close $fh;
512	rename "$filename.pst~", "$filename.pst";
513	} else {
514	unlink "$filename.pst";
515	}
516
517	rename "$filename~", $filename;
518	} else {
519	warn "FATAL: $filename~: $!\n";
520	}
521	} else {
522	unlink $filename;
523	unlink "$filename.pst";
524	}
525	}
526
527	sub object_thawer_load {
528	my ($filename) = @_;
529
530	local $/;
531
532	my $av;
533
534	#TODO: use sysread etc.
535	if (open my $data, "<:raw:perlio", $filename) {
536	$data = <$data>;
537	if (open my $pst, "<:raw:perlio", "$filename.pst") {
538	$av = eval { (Storable::thaw <$pst>)->{objs} };
539	}
540	return ($data, $av);
541	}
542
543	()
544	}
545
546	attach_to_objects
547	prio => -1000000,	716	prio => -1000000,
		717	on_instantiate => sub {
		718	my ($obj, $data) = @_;
		719
		720	$data = from_json $data;
		721
		722	for (@$data) {
		723	my ($name, $args) = @$_;
		724
		725	$obj->attach ($name, %{$args || {} });
		726	}
		727	},
		728	on_reattach => \&reattach,
548	on_clone => sub {	729	on_clone => sub {
549	my ($src, $dst) = @_;	730	my ($src, $dst) = @_;
550		731
551	@{$dst->registry} = @{$src->registry};	732	@{$dst->registry} = @{$src->registry};
552		733
553	%$dst = %$src;	734	%$dst = %$src;
554		735
555	%{$dst->{_attachment}} = %{$src->{_attachment}}	736	%{$dst->{_attachment}} = %{$src->{_attachment}}
556	if exists $src->{_attachment};	737	if exists $src->{_attachment};
557	},	738	},
558	;	739	);
		740
		741	sub object_freezer_save {
		742	my ($filename, $rdata, $objs) = @_;
		743
		744	sync_job {
		745	if (length $$rdata) {
		746	warn sprintf "saving %s (%d,%d)\n",
		747	$filename, length $$rdata, scalar @$objs;
		748
		749	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		750	chmod SAVE_MODE, $fh;
		751	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		752	aio_fsync $fh;
		753	close $fh;
		754
		755	if (@$objs) {
		756	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		757	chmod SAVE_MODE, $fh;
		758	my $data = Storable::nfreeze { version => 1, objs => $objs };
		759	aio_write $fh, 0, (length $data), $data, 0;
		760	aio_fsync $fh;
		761	close $fh;
		762	aio_rename "$filename.pst~", "$filename.pst";
		763	}
		764	} else {
		765	aio_unlink "$filename.pst";
		766	}
		767
		768	aio_rename "$filename~", $filename;
		769	} else {
		770	warn "FATAL: $filename~: $!\n";
		771	}
		772	} else {
		773	aio_unlink $filename;
		774	aio_unlink "$filename.pst";
		775	}
		776	}
		777	}
		778
		779	sub object_freezer_as_string {
		780	my ($rdata, $objs) = @_;
		781
		782	use Data::Dumper;
		783
		784	$$rdata . Dumper $objs
		785	}
		786
		787	sub object_thawer_load {
		788	my ($filename) = @_;
		789
		790	my ($data, $av);
		791
		792	(aio_load $filename, $data) >= 0
		793	or return;
		794
		795	unless (aio_stat "$filename.pst") {
		796	(aio_load "$filename.pst", $av) >= 0
		797	or return;
		798	$av = eval { (Storable::thaw $av)->{objs} };
		799	}
		800
		801	warn sprintf "loading %s (%d)\n",
		802	$filename, length $data, scalar @{$av || []};#d#
		803	return ($data, $av);
		804	}
559		805
560	#############################################################################	806	#############################################################################
561	# old plug-in events	807	# command handling &c
562		808
563	sub inject_event {	809	=item cf::register_command $name => \&callback($ob,$args);
564	my $extension = shift;
565	my $event_code = shift;
566		810
567	my $cb = $hook[$event_code]{$extension}	811	Register a callback for execution when the client sends the user command
568	or return;	812	$name.
569		813
570	&$cb	814	=cut
571	}
572
573	sub inject_global_event {
574	my $event = shift;
575
576	my $cb = $hook[$event]
577	or return;
578
579	List::Util::max map &$_, values %$cb
580	}
581
582	sub inject_command {
583	my ($name, $obj, $params) = @_;
584
585	for my $cmd (@{ $command{$name} }) {
586	$cmd->[1]->($obj, $params);
587	}
588
589	-1
590	}
591		815
592	sub register_command {	816	sub register_command {
593	my ($name, $time, $cb) = @_;	817	my ($name, $cb) = @_;
594		818
595	my $caller = caller;	819	my $caller = caller;
596	#warn "registering command '$name/$time' to '$caller'";	820	#warn "registering command '$name/$time' to '$caller'";
597		821
598	push @{ $command{$name} }, [$time, $cb, $caller];	822	push @{ $COMMAND{$name} }, [$caller, $cb];
599	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
600	}	823	}
		824
		825	=item cf::register_extcmd $name => \&callback($pl,$packet);
		826
		827	Register a callbackf ro execution when the client sends an extcmd packet.
		828
		829	If the callback returns something, it is sent back as if reply was being
		830	called.
		831
		832	=cut
601		833
602	sub register_extcmd {	834	sub register_extcmd {
603	my ($name, $cb) = @_;	835	my ($name, $cb) = @_;
604		836
605	my $caller = caller;	837	$EXTCMD{$name} = $cb;
606	#warn "registering extcmd '$name' to '$caller'";
607
608	$extcmd{$name} = [$cb, $caller];
609	}	838	}
610		839
611	sub register {	840	cf::player->attach (
612	my ($base, $pkg) = @_;	841	on_command => sub {
		842	my ($pl, $name, $params) = @_;
613		843
614	#TODO	844	my $cb = $COMMAND{$name}
615	}	845	or return;
		846
		847	for my $cmd (@$cb) {
		848	$cmd->[1]->($pl->ob, $params);
		849	}
		850
		851	cf::override;
		852	},
		853	on_extcmd => sub {
		854	my ($pl, $buf) = @_;
		855
		856	my $msg = eval { from_json $buf };
		857
		858	if (ref $msg) {
		859	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		860	if (my %reply = $cb->($pl, $msg)) {
		861	$pl->ext_reply ($msg->{msgid}, %reply);
		862	}
		863	}
		864	} else {
		865	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		866	}
		867
		868	cf::override;
		869	},
		870	);
616		871
617	sub load_extension {	872	sub load_extension {
618	my ($path) = @_;	873	my ($path) = @_;
619		874
620	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	875	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
621	my $base = $1;	876	my $base = $1;
622	my $pkg = $1;	877	my $pkg = $1;
623	$pkg =~ s/[^[:word:]]/_/g;	878	$pkg =~ s/[^[:word:]]/_/g;
624	$pkg = "ext::$pkg";	879	$pkg = "ext::$pkg";
625		880
626	warn "loading '$path' into '$pkg'\n";	881	warn "... loading '$path' into '$pkg'\n";
627		882
628	open my $fh, "<:utf8", $path	883	open my $fh, "<:utf8", $path
629	or die "$path: $!";	884	or die "$path: $!";
630		885
631	my $source =	886	my $source =
632	"package $pkg; use strict; use utf8;\n"	887	"package $pkg; use strict; use utf8;\n"
633	. "#line 1 \"$path\"\n{\n"	888	. "#line 1 \"$path\"\n{\n"
634	. (do { local $/; <$fh> })	889	. (do { local $/; <$fh> })
635	. "\n};\n1";	890	. "\n};\n1";
636		891
637	eval $source	892	unless (eval $source) {
638	or die "$path: $@";	893	my $msg = $@ ? "$path: $@\n"
639		894	: "extension disabled.\n";
640	push @exts, $pkg;	895	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
641	$ext_pkg{$base} = $pkg;	896	warn $@;
642		897	warn "mandatory extension failed to load, exiting.\n";
643	# no strict 'refs';	898	exit 1;
644	# @{"$pkg\::ISA"} = ext::;	899	}
645		900	die $@;
646	register $base, $pkg;
647	}
648
649	sub unload_extension {
650	my ($pkg) = @_;
651
652	warn "removing extension $pkg\n";
653
654	# remove hooks
655	#TODO
656	# for my $idx (0 .. $#PLUGIN_EVENT) {
657	# delete $hook[$idx]{$pkg};
658	# }	901	}
659		902
660	# remove commands	903	push @EXTS, $pkg;
661	for my $name (keys %command) {
662	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
663
664	if (@cb) {
665	$command{$name} = \@cb;
666	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
667	} else {
668	delete $command{$name};
669	delete $COMMAND{"$name\000"};
670	}
671	}
672
673	# remove extcmds
674	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
675	delete $extcmd{$name};
676	}
677
678	if (my $cb = $pkg->can ("unload")) {
679	eval {
680	$cb->($pkg);
681	1
682	} or warn "$pkg unloaded, but with errors: $@";
683	}
684
685	Symbol::delete_package $pkg;
686	}	904	}
687		905
688	sub load_extensions {	906	sub load_extensions {
689	my $LIBDIR = maps_directory "perl";
690
691	for my $ext (<$LIBDIR/*.ext>) {	907	for my $ext (<$LIBDIR/*.ext>) {
692	next unless -r $ext;	908	next unless -r $ext;
693	eval {	909	eval {
694	load_extension $ext;	910	load_extension $ext;
695	1	911	1
696	} or warn "$ext not loaded: $@";	912	} or warn "$ext not loaded: $@";
697	}	913	}
698	}	914	}
699		915
700	#############################################################################	916	#############################################################################
701	# extcmd framework, basically convert ext <msg>
702	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
703		917
704	attach_to_players	918	=head2 CORE EXTENSIONS
705	on_extcmd => sub {	919
		920	Functions and methods that extend core crossfire objects.
		921
		922	=cut
		923
		924	package cf::player;
		925
		926	use Coro::AIO;
		927
		928	=head3 cf::player
		929
		930	=over 4
		931
		932	=item cf::player::find $login
		933
		934	Returns the given player object, loading it if necessary (might block).
		935
		936	=cut
		937
		938	sub playerdir($) {
		939	cf::localdir
		940	. "/"
		941	. cf::playerdir
		942	. "/"
		943	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		944	}
		945
		946	sub path($) {
		947	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		948
		949	(playerdir $login) . "/$login.pl"
		950	}
		951
		952	sub find_active($) {
		953	$cf::PLAYER{$_[0]}
		954	and $cf::PLAYER{$_[0]}->active
		955	and $cf::PLAYER{$_[0]}
		956	}
		957
		958	sub exists($) {
		959	my ($login) = @_;
		960
		961	$cf::PLAYER{$login}
		962	or cf::sync_job { !aio_stat path $login }
		963	}
		964
		965	sub find($) {
		966	return $cf::PLAYER{$_[0]} || do {
		967	my $login = $_[0];
		968
		969	my $guard = cf::lock_acquire "user_find:$login";
		970
		971	$cf::PLAYER{$_[0]} || do {
		972	my $pl = load_pl path $login
		973	or return;
		974	$cf::PLAYER{$login} = $pl
		975	}
		976	}
		977	}
		978
		979	sub save($) {
		980	my ($pl) = @_;
		981
		982	return if $pl->{deny_save};
		983
		984	my $path = path $pl;
		985	my $guard = cf::lock_acquire "user_save:$path";
		986
		987	return if $pl->{deny_save};
		988
		989	aio_mkdir playerdir $pl, 0770;
		990	$pl->{last_save} = $cf::RUNTIME;
		991
		992	$pl->save_pl ($path);
		993	Coro::cede;
		994	}
		995
		996	sub new($) {
		997	my ($login) = @_;
		998
		999	my $self = create;
		1000
		1001	$self->ob->name ($login);
		1002	$self->{deny_save} = 1;
		1003
		1004	$cf::PLAYER{$login} = $self;
		1005
		1006	$self
		1007	}
		1008
		1009	=item $pl->quit_character
		1010
		1011	Nukes the player without looking back. If logged in, the connection will
		1012	be destroyed. May block for a long time.
		1013
		1014	=cut
		1015
		1016	sub quit_character {
		1017	my ($pl) = @_;
		1018
		1019	$pl->{deny_save} = 1;
		1020	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1021
		1022	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1023	$pl->deactivate;
		1024	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1025	$pl->ns->destroy if $pl->ns;
		1026
		1027	my $path = playerdir $pl;
		1028	my $temp = "$path~$cf::RUNTIME~deleting~";
		1029	aio_rename $path, $temp;
		1030	delete $cf::PLAYER{$pl->ob->name};
		1031	$pl->destroy;
		1032	IO::AIO::aio_rmtree $temp;
		1033	}
		1034
		1035	=item cf::player::list_logins
		1036
		1037	Returns am arrayref of all valid playernames in the system, can take a
		1038	while and may block, so not sync_job-capable, ever.
		1039
		1040	=cut
		1041
		1042	sub list_logins {
		1043	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1044	or return [];
		1045
		1046	my @logins;
		1047
		1048	for my $login (@$dirs) {
		1049	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1050	aio_read $fh, 0, 512, my $buf, 0 or next;
		1051	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1052
		1053	utf8::decode $login;
		1054	push @logins, $login;
		1055	}
		1056
		1057	\@logins
		1058	}
		1059
		1060	=item $player->maps
		1061
		1062	Returns an arrayref of map paths that are private for this
		1063	player. May block.
		1064
		1065	=cut
		1066
		1067	sub maps($) {
		1068	my ($pl) = @_;
		1069
		1070	my $files = aio_readdir playerdir $pl
		1071	or return;
		1072
		1073	my @paths;
		1074
		1075	for (@$files) {
		1076	utf8::decode $_;
		1077	next if /\.(?:pl|pst)$/;
		1078	next unless /^$PATH_SEP/o;
		1079
		1080	s/\.map$//;
		1081	push @paths, "~" . $pl->ob->name . "/" . $_;
		1082	}
		1083
		1084	\@paths
		1085	}
		1086
		1087	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1088
		1089	Sends an ext reply to the player.
		1090
		1091	=cut
		1092
		1093	sub ext_reply($$$%) {
		1094	my ($self, $id, %msg) = @_;
		1095
		1096	$msg{msgid} = $id;
		1097
		1098	$self->send ("ext " . cf::to_json \%msg);
		1099	}
		1100
		1101	package cf;
		1102
		1103	=back
		1104
		1105
		1106	=head3 cf::map
		1107
		1108	=over 4
		1109
		1110	=cut
		1111
		1112	package cf::map;
		1113
		1114	use Fcntl;
		1115	use Coro::AIO;
		1116
		1117	use overload
		1118	'""' => \&as_string,
		1119	fallback => 1;
		1120
		1121	our $MAX_RESET = 3600;
		1122	our $DEFAULT_RESET = 3000;
		1123
		1124	sub generate_random_map {
		1125	my ($self, $rmp) = @_;
		1126	# mit "rum" bekleckern, nicht
		1127	$self->_create_random_map (
		1128	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1129	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1130	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1131	$rmp->{exit_on_final_map},
		1132	$rmp->{xsize}, $rmp->{ysize},
		1133	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1134	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1135	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1136	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1137	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1138	(cf::region::find $rmp->{region}), $rmp->{custom}
		1139	)
		1140	}
		1141
		1142	sub register {
		1143	my (undef, $regex) = @_;
		1144	my $pkg = caller;
		1145
		1146	no strict;
		1147	push @{"$pkg\::ISA"}, __PACKAGE__;
		1148
		1149	$EXT_MAP{$pkg} = qr<$regex>;
		1150	}
		1151
		1152	# also paths starting with '/'
		1153	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1154
		1155	sub thawer_merge {
		1156	my ($self, $merge) = @_;
		1157
		1158	# we have to keep some variables in memory intact
		1159	local $self->{path};
		1160	local $self->{load_path};
		1161	local $self->{deny_save};
		1162	local $self->{deny_reset};
		1163
		1164	$self->SUPER::thawer_merge ($merge);
		1165	}
		1166
		1167	sub normalise {
		1168	my ($path, $base) = @_;
		1169
		1170	# map plan:
		1171	#
		1172	# /! non-realised random map exit (special hack!)
		1173	# {... are special paths that are not being touched
		1174	# ?xxx/... are special absolute paths
		1175	# ?random/... random maps
		1176	# /... normal maps
		1177	# ~user/... per-player map of a specific user
		1178
		1179	$path =~ s/$PATH_SEP/\//go;
		1180
		1181	# treat it as relative path if it starts with
		1182	# something that looks reasonable
		1183	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1184	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1185
		1186	$base =~ s{[^/]+/?$}{};
		1187	$path = "$base/$path";
		1188	}
		1189
		1190	for ($path) {
		1191	redo if s{//}{/};
		1192	redo if s{/\.?/}{/};
		1193	redo if s{/[^/]+/\.\./}{/};
		1194	}
		1195
		1196	$path
		1197	}
		1198
		1199	sub new_from_path {
		1200	my (undef, $path, $base) = @_;
		1201
		1202	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1203
		1204	$path = normalise $path, $base;
		1205
		1206	for my $pkg (keys %EXT_MAP) {
		1207	if ($path =~ $EXT_MAP{$pkg}) {
		1208	my $self = bless cf::map::new, $pkg;
		1209	$self->{path} = $path; $self->path ($path);
		1210	$self->init; # pass $1 etc.
		1211	return $self;
		1212	}
		1213	}
		1214
		1215	Carp::carp "unable to resolve path '$path'.";
		1216	()
		1217	}
		1218
		1219	sub init {
		1220	my ($self) = @_;
		1221
		1222	$self
		1223	}
		1224
		1225	sub as_string {
		1226	my ($self) = @_;
		1227
		1228	"$self->{path}"
		1229	}
		1230
		1231	# the displayed name, this is a one way mapping
		1232	sub visible_name {
		1233	&as_string
		1234	}
		1235
		1236	# the original (read-only) location
		1237	sub load_path {
		1238	my ($self) = @_;
		1239
		1240	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1241	}
		1242
		1243	# the temporary/swap location
		1244	sub save_path {
		1245	my ($self) = @_;
		1246
		1247	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1248	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1249	}
		1250
		1251	# the unique path, undef == no special unique path
		1252	sub uniq_path {
		1253	my ($self) = @_;
		1254
		1255	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1256	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1257	}
		1258
		1259	# and all this just because we cannot iterate over
		1260	# all maps in C++...
		1261	sub change_all_map_light {
		1262	my ($change) = @_;
		1263
		1264	$_->change_map_light ($change)
		1265	for grep $_->outdoor, values %cf::MAP;
		1266	}
		1267
		1268	sub unlink_save {
		1269	my ($self) = @_;
		1270
		1271	utf8::encode (my $save = $self->save_path);
		1272	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1273	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1274	}
		1275
		1276	sub load_header_from($) {
		1277	my ($self, $path) = @_;
		1278
		1279	utf8::encode $path;
		1280	aio_open $path, O_RDONLY, 0
		1281	or return;
		1282
		1283	$self->_load_header ($path)
		1284	or return;
		1285
		1286	$self->{load_path} = $path;
		1287
		1288	1
		1289	}
		1290
		1291	sub load_orig {
		1292	my ($self) = @_;
		1293
		1294	$self->load_header_from ($self->load_path)
		1295	}
		1296
		1297	sub load_temp {
		1298	my ($self) = @_;
		1299
		1300	$self->load_header_from ($self->save_path)
		1301	}
		1302
		1303	sub load_header {
		1304	my ($self) = @_;
		1305
		1306	if ($self->load_temp) {
		1307	$self->last_access ((delete $self->{last_access})
		1308	|| $cf::RUNTIME); #d#
		1309	# safety
		1310	$self->{instantiate_time} = $cf::RUNTIME
		1311	if $self->{instantiate_time} > $cf::RUNTIME;
		1312	} else {
		1313	$self->load_orig
		1314	or return;
		1315
		1316	$self->{load_original} = 1;
		1317	$self->{instantiate_time} = $cf::RUNTIME;
		1318	$self->last_access ($cf::RUNTIME);
		1319	$self->instantiate;
		1320	}
		1321
		1322	1
		1323	}
		1324
		1325	sub find;
		1326	sub find {
		1327	my ($path, $origin) = @_;
		1328
		1329	$path = normalise $path, $origin && $origin->path;
		1330
		1331	cf::lock_wait "map_find:$path";
		1332
		1333	$cf::MAP{$path} || do {
		1334	my $guard = cf::lock_acquire "map_find:$path";
		1335	my $map = new_from_path cf::map $path
		1336	or return;
		1337
		1338	$map->{last_save} = $cf::RUNTIME;
		1339
		1340	$map->load_header
		1341	or return;
		1342
		1343	if ($map->should_reset) {
		1344	$cf::WAIT_FOR_TICK->wait;
		1345	$map->reset;
		1346	undef $guard;
		1347	$map = find $path
		1348	or return;
		1349	}
		1350
		1351	$cf::MAP{$path} = $map
		1352	}
		1353	}
		1354
		1355	sub load {
		1356	my ($self) = @_;
		1357
		1358	my $path = $self->{path};
		1359	my $guard = cf::lock_acquire "map_load:$path";
		1360
		1361	return if $self->in_memory != cf::MAP_SWAPPED;
		1362
		1363	$self->in_memory (cf::MAP_LOADING);
		1364
		1365	$self->alloc;
		1366	$self->_load_objects ($self->{load_path}, 1)
		1367	or return;
		1368
		1369	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1370	if delete $self->{load_original};
		1371
		1372	if (my $uniq = $self->uniq_path) {
		1373	utf8::encode $uniq;
		1374	if (aio_open $uniq, O_RDONLY, 0) {
		1375	$self->clear_unique_items;
		1376	$self->_load_objects ($uniq, 0);
		1377	}
		1378	}
		1379
		1380	Coro::cede;
		1381
		1382	# now do the right thing for maps
		1383	$self->link_multipart_objects;
		1384
		1385	unless ($self->{deny_activate}) {
		1386	$self->decay_objects;
		1387	$self->fix_auto_apply;
		1388	$self->update_buttons;
		1389	Coro::cede;
		1390	$self->set_darkness_map;
		1391	$self->difficulty ($self->estimate_difficulty)
		1392	unless $self->difficulty;
		1393	Coro::cede;
		1394	$self->activate;
		1395	}
		1396
		1397	$self->in_memory (cf::MAP_IN_MEMORY);
		1398	}
		1399
		1400	sub customise_for {
706	my ($pl, $buf) = @_;	1401	my ($self, $ob) = @_;
707		1402
708	my $msg = eval { from_json $buf };	1403	return find "~" . $ob->name . "/" . $self->{path}
		1404	if $self->per_player;
709		1405
710	if (ref $msg) {	1406	$self
711	if (my $cb = $extcmd{$msg->{msgtype}}) {	1407	}
712	if (my %reply = $cb->[0]->($pl, $msg)) {	1408
713	$pl->ext_reply ($msg->{msgid}, %reply);	1409	# find and load all maps in the 3x3 area around a map
714	}	1410	sub load_diag {
		1411	my ($map) = @_;
		1412
		1413	my @diag; # diagonal neighbours
		1414
		1415	for (0 .. 3) {
		1416	my $neigh = $map->tile_path ($_)
		1417	or next;
		1418	$neigh = find $neigh, $map
		1419	or next;
		1420	$neigh->load;
		1421
		1422	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1423	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1424	}
		1425
		1426	for (@diag) {
		1427	my $neigh = find @$_
		1428	or next;
		1429	$neigh->load;
		1430	}
		1431	}
		1432
		1433	sub find_sync {
		1434	my ($path, $origin) = @_;
		1435
		1436	cf::sync_job { find $path, $origin }
		1437	}
		1438
		1439	sub do_load_sync {
		1440	my ($map) = @_;
		1441
		1442	cf::sync_job { $map->load };
		1443	}
		1444
		1445	our %MAP_PREFETCH;
		1446	our $MAP_PREFETCHER = undef;
		1447
		1448	sub find_async {
		1449	my ($path, $origin) = @_;
		1450
		1451	$path = normalise $path, $origin && $origin->{path};
		1452
		1453	if (my $map = $cf::MAP{$path}) {
		1454	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1455	}
		1456
		1457	undef $MAP_PREFETCH{$path};
		1458	$MAP_PREFETCHER ||= cf::async {
		1459	while (%MAP_PREFETCH) {
		1460	for my $path (keys %MAP_PREFETCH) {
		1461	my $map = find $path
		1462	or next;
		1463	$map->load;
		1464
		1465	delete $MAP_PREFETCH{$path};
715	}	1466	}
		1467	}
		1468	undef $MAP_PREFETCHER;
		1469	};
		1470
		1471	()
		1472	}
		1473
		1474	sub save {
		1475	my ($self) = @_;
		1476
		1477	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1478
		1479	$self->{last_save} = $cf::RUNTIME;
		1480
		1481	return unless $self->dirty;
		1482
		1483	my $save = $self->save_path; utf8::encode $save;
		1484	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1485
		1486	$self->{load_path} = $save;
		1487
		1488	return if $self->{deny_save};
		1489
		1490	local $self->{last_access} = $self->last_access;#d#
		1491
		1492	cf::async {
		1493	$_->contr->save for $self->players;
		1494	};
		1495
		1496	if ($uniq) {
		1497	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1498	$self->_save_objects ($uniq, cf::IO_UNIQUES);
716	} else {	1499	} else {
717	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1500	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
718	}
719
720	cf::override;
721	},	1501	}
722	;	1502	}
723		1503
724	#############################################################################	1504	sub swap_out {
725	# load/save/clean perl data associated with a map
726
727	*cf::mapsupport::on_clean = sub {
728	my ($map) = @_;	1505	my ($self) = @_;
729		1506
730	my $path = $map->tmpname;	1507	# save first because save cedes
731	defined $path or return;	1508	$self->save;
732		1509
733	unlink "$path.pst";	1510	my $lock = cf::lock_acquire "map_data:" . $self->path;
734	};
735		1511
736	attach_to_maps prio => -10000, package => cf::mapsupport::;	1512	return if $self->players;
		1513	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1514	return if $self->{deny_save};
737		1515
738	#############################################################################	1516	$self->clear;
739	# load/save perl data associated with player->ob objects	1517	$self->in_memory (cf::MAP_SWAPPED);
740
741	sub all_objects(@) {
742	@_, map all_objects ($_->inv), @_
743	}	1518	}
744		1519
745	# TODO: compatibility cruft, remove when no longer needed	1520	sub reset_at {
746	attach_to_players	1521	my ($self) = @_;
747	on_load => sub {
748	my ($pl, $path) = @_;
749		1522
750	for my $o (all_objects $pl->ob) {	1523	# TODO: safety, remove and allow resettable per-player maps
751	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1524	return 1e99 if $self->isa ("ext::map_per_player");#d#
752	$o->set_ob_key_value ("_perl_data");	1525	return 1e99 if $self->{deny_reset};
753		1526
754	%$o = %{ Storable::thaw pack "H*", $value };	1527	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
755	}	1528	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
756	}	1529
		1530	$time + $to
		1531	}
		1532
		1533	sub should_reset {
		1534	my ($self) = @_;
		1535
		1536	$self->reset_at <= $cf::RUNTIME
		1537	}
		1538
		1539	sub reset {
		1540	my ($self) = @_;
		1541
		1542	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1543
		1544	return if $self->players;
		1545	return if $self->isa ("ext::map_per_player");#d#
		1546
		1547	warn "resetting map ", $self->path;#d#
		1548
		1549	delete $cf::MAP{$self->path};
		1550
		1551	$self->in_memory (cf::MAP_SWAPPED);
		1552	$self->clear;
		1553
		1554	$_->clear_links_to ($self) for values %cf::MAP;
		1555
		1556	$self->unlink_save;
		1557	$self->destroy;
		1558	}
		1559
		1560	my $nuke_counter = "aaaa";
		1561
		1562	sub nuke {
		1563	my ($self) = @_;
		1564
		1565	delete $cf::MAP{$self->path};
		1566
		1567	$self->unlink_save;
		1568
		1569	bless $self, "cf::map";
		1570	delete $self->{deny_reset};
		1571	$self->{deny_save} = 1;
		1572	$self->reset_timeout (1);
		1573	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1574
		1575	$cf::MAP{$self->path} = $self;
		1576
		1577	$self->reset; # polite request, might not happen
		1578	}
		1579
		1580	=item cf::map::unique_maps
		1581
		1582	Returns an arrayref of paths of all shared maps that have
		1583	instantiated unique items. May block.
		1584
		1585	=cut
		1586
		1587	sub unique_maps() {
		1588	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1589	or return;
		1590
		1591	my @paths;
		1592
		1593	for (@$files) {
		1594	utf8::decode $_;
		1595	next if /\.pst$/;
		1596	next unless /^$PATH_SEP/o;
		1597
		1598	s/\.map$//;
		1599	push @paths, $_;
757	},	1600	}
758	;
759		1601
760	#############################################################################	1602	\@paths
		1603	}
761		1604
762	=head2 CORE EXTENSIONS	1605	package cf;
763		1606
764	Functions and methods that extend core crossfire objects.	1607	=back
		1608
		1609	=head3 cf::object
		1610
		1611	=cut
		1612
		1613	package cf::object;
765		1614
766	=over 4	1615	=over 4
767		1616
768	=item cf::player::exists $login	1617	=item $ob->inv_recursive
769		1618
770	Returns true when the given account exists.	1619	Returns the inventory of the object _and_ their inventories, recursively.
771		1620
772	=cut	1621	=cut
773		1622
774	sub cf::player::exists($) {	1623	sub inv_recursive_;
775	cf::player::find $_[0]	1624	sub inv_recursive_ {
776	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1625	map { $_, inv_recursive_ $_->inv } @_
777	}	1626	}
778		1627
		1628	sub inv_recursive {
		1629	inv_recursive_ inv $_[0]
		1630	}
		1631
		1632	package cf;
		1633
		1634	=back
		1635
		1636	=head3 cf::object::player
		1637
		1638	=over 4
		1639
779	=item $object->reply ($npc, $msg[, $flags])	1640	=item $player_object->reply ($npc, $msg[, $flags])
780		1641
781	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1642	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
782	can be C<undef>. Does the right thing when the player is currently in a	1643	can be C<undef>. Does the right thing when the player is currently in a
783	dialogue with the given NPC character.	1644	dialogue with the given NPC character.
784		1645
785	=cut	1646	=cut
786		1647
787	# rough implementation of a future "reply" method that works	1648	# rough implementation of a future "reply" method that works
788	# with dialog boxes.	1649	# with dialog boxes.
		1650	#TODO: the first argument must go, split into a $npc->reply_to ( method
789	sub cf::object::player::reply($$$;$) {	1651	sub cf::object::player::reply($$$;$) {
790	my ($self, $npc, $msg, $flags) = @_;	1652	my ($self, $npc, $msg, $flags) = @_;
791		1653
792	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1654	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
793		1655
…		…
797	$msg = $npc->name . " says: $msg" if $npc;	1659	$msg = $npc->name . " says: $msg" if $npc;
798	$self->message ($msg, $flags);	1660	$self->message ($msg, $flags);
799	}	1661	}
800	}	1662	}
801		1663
802	=item $player->ext_reply ($msgid, $msgtype, %msg)	1664	=item $player_object->may ("access")
803		1665
804	Sends an ext reply to the player.	1666	Returns wether the given player is authorized to access resource "access"
		1667	(e.g. "command_wizcast").
805		1668
806	=cut	1669	=cut
807		1670
808	sub cf::player::ext_reply($$$%) {	1671	sub cf::object::player::may {
		1672	my ($self, $access) = @_;
		1673
		1674	$self->flag (cf::FLAG_WIZ) ||
		1675	(ref $cf::CFG{"may_$access"}
		1676	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1677	: $cf::CFG{"may_$access"})
		1678	}
		1679
		1680	=item $player_object->enter_link
		1681
		1682	Freezes the player and moves him/her to a special map (C<{link}>).
		1683
		1684	The player should be reasonably safe there for short amounts of time. You
		1685	I<MUST> call C<leave_link> as soon as possible, though.
		1686
		1687	Will never block.
		1688
		1689	=item $player_object->leave_link ($map, $x, $y)
		1690
		1691	Moves the player out of the special C<{link}> map onto the specified
		1692	map. If the map is not valid (or omitted), the player will be moved back
		1693	to the location he/she was before the call to C<enter_link>, or, if that
		1694	fails, to the emergency map position.
		1695
		1696	Might block.
		1697
		1698	=cut
		1699
		1700	sub link_map {
		1701	unless ($LINK_MAP) {
		1702	$LINK_MAP = cf::map::find "{link}"
		1703	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1704	$LINK_MAP->load;
		1705	}
		1706
		1707	$LINK_MAP
		1708	}
		1709
		1710	sub cf::object::player::enter_link {
		1711	my ($self) = @_;
		1712
		1713	$self->deactivate_recursive;
		1714
		1715	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1716
		1717	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1718	if $self->map;
		1719
		1720	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1721	}
		1722
		1723	sub cf::object::player::leave_link {
		1724	my ($self, $map, $x, $y) = @_;
		1725
		1726	my $link_pos = delete $self->{_link_pos};
		1727
		1728	unless ($map) {
		1729	# restore original map position
		1730	($map, $x, $y) = @{ $link_pos || [] };
		1731	$map = cf::map::find $map;
		1732
		1733	unless ($map) {
		1734	($map, $x, $y) = @$EMERGENCY_POSITION;
		1735	$map = cf::map::find $map
		1736	or die "FATAL: cannot load emergency map\n";
		1737	}
		1738	}
		1739
		1740	($x, $y) = (-1, -1)
		1741	unless (defined $x) && (defined $y);
		1742
		1743	# use -1 or undef as default coordinates, not 0, 0
		1744	($x, $y) = ($map->enter_x, $map->enter_y)
		1745	if $x <=0 && $y <= 0;
		1746
		1747	$map->load;
		1748	$map->load_diag;
		1749
		1750	return unless $self->contr->active;
		1751	$self->activate_recursive;
		1752	$self->enter_map ($map, $x, $y);
		1753	}
		1754
		1755	cf::player->attach (
		1756	on_logout => sub {
		1757	my ($pl) = @_;
		1758
		1759	# abort map switching before logout
		1760	if ($pl->ob->{_link_pos}) {
		1761	cf::sync_job {
		1762	$pl->ob->leave_link
		1763	};
		1764	}
		1765	},
		1766	on_login => sub {
		1767	my ($pl) = @_;
		1768
		1769	# try to abort aborted map switching on player login :)
		1770	# should happen only on crashes
		1771	if ($pl->ob->{_link_pos}) {
		1772	$pl->ob->enter_link;
		1773	(async {
		1774	# we need this sleep as the login has a concurrent enter_exit running
		1775	# and this sleep increases chances of the player not ending up in scorn
		1776	$pl->ob->reply (undef,
		1777	"There was an internal problem at your last logout, "
		1778	. "the server will try to bring you to your intended destination in a second.",
		1779	cf::NDI_RED);
		1780	Coro::Timer::sleep 1;
		1781	$pl->ob->leave_link;
		1782	})->prio (2);
		1783	}
		1784	},
		1785	);
		1786
		1787	=item $player_object->goto ($path, $x, $y)
		1788
		1789	=cut
		1790
		1791	sub cf::object::player::goto {
		1792	my ($self, $path, $x, $y) = @_;
		1793
		1794	$self->enter_link;
		1795
		1796	(async {
		1797	my $map = cf::map::find $path;
		1798	$map = $map->customise_for ($self) if $map;
		1799
		1800	# warn "entering ", $map->path, " at ($x, $y)\n"
		1801	# if $map;
		1802
		1803	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1804
		1805	$self->leave_link ($map, $x, $y);
		1806	})->prio (1);
		1807	}
		1808
		1809	=item $player_object->enter_exit ($exit_object)
		1810
		1811	=cut
		1812
		1813	sub parse_random_map_params {
		1814	my ($spec) = @_;
		1815
		1816	my $rmp = { # defaults
		1817	xsize => (cf::rndm 15, 40),
		1818	ysize => (cf::rndm 15, 40),
		1819	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1820	#layout => string,
		1821	};
		1822
		1823	for (split /\n/, $spec) {
		1824	my ($k, $v) = split /\s+/, $_, 2;
		1825
		1826	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1827	}
		1828
		1829	$rmp
		1830	}
		1831
		1832	sub prepare_random_map {
		1833	my ($exit) = @_;
		1834
		1835	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1836
		1837	# all this does is basically replace the /! path by
		1838	# a new random map path (?random/...) with a seed
		1839	# that depends on the exit object
		1840
		1841	my $rmp = parse_random_map_params $exit->msg;
		1842
		1843	if ($exit->map) {
		1844	$rmp->{region} = $exit->map->region_name;
		1845	$rmp->{origin_map} = $exit->map->path;
		1846	$rmp->{origin_x} = $exit->x;
		1847	$rmp->{origin_y} = $exit->y;
		1848	}
		1849
		1850	$rmp->{random_seed} ||= $exit->random_seed;
		1851
		1852	my $data = cf::to_json $rmp;
		1853	my $md5 = Digest::MD5::md5_hex $data;
		1854	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1855
		1856	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1857	aio_write $fh, 0, (length $data), $data, 0;
		1858	undef $fh;
		1859	aio_rename "$meta~", $meta;
		1860
		1861	$exit->slaying ("?random/$md5");
		1862	$exit->msg (undef);
		1863	}
		1864	}
		1865
		1866	sub cf::object::player::enter_exit {
809	my ($self, $id, %msg) = @_;	1867	my ($self, $exit) = @_;
810		1868
811	$msg{msgid} = $id;	1869	return unless $self->type == cf::PLAYER;
812		1870
813	$self->send ("ext " . to_json \%msg);	1871	$self->enter_link;
		1872
		1873	(async {
		1874	$self->deactivate_recursive; # just to be sure
		1875	unless (eval {
		1876	prepare_random_map $exit
		1877	if $exit->slaying eq "/!";
		1878
		1879	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1880	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1881
		1882	1;
		1883	}) {
		1884	$self->message ("Something went wrong deep within the crossfire server. "
		1885	. "I'll try to bring you back to the map you were before. "
		1886	. "Please report this to the dungeon master!",
		1887	cf::NDI_UNIQUE | cf::NDI_RED);
		1888
		1889	warn "ERROR in enter_exit: $@";
		1890	$self->leave_link;
		1891	}
		1892	})->prio (1);
814	}	1893	}
		1894
		1895	=head3 cf::client
		1896
		1897	=over 4
		1898
		1899	=item $client->send_drawinfo ($text, $flags)
		1900
		1901	Sends a drawinfo packet to the client. Circumvents output buffering so
		1902	should not be used under normal circumstances.
		1903
		1904	=cut
		1905
		1906	sub cf::client::send_drawinfo {
		1907	my ($self, $text, $flags) = @_;
		1908
		1909	utf8::encode $text;
		1910	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1911	}
		1912
		1913
		1914	=item $success = $client->query ($flags, "text", \&cb)
		1915
		1916	Queues a query to the client, calling the given callback with
		1917	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1918	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1919
		1920	Queries can fail, so check the return code. Or don't, as queries will become
		1921	reliable at some point in the future.
		1922
		1923	=cut
		1924
		1925	sub cf::client::query {
		1926	my ($self, $flags, $text, $cb) = @_;
		1927
		1928	return unless $self->state == ST_PLAYING
		1929	|| $self->state == ST_SETUP
		1930	|| $self->state == ST_CUSTOM;
		1931
		1932	$self->state (ST_CUSTOM);
		1933
		1934	utf8::encode $text;
		1935	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1936
		1937	$self->send_packet ($self->{query_queue}[0][0])
		1938	if @{ $self->{query_queue} } == 1;
		1939	}
		1940
		1941	cf::client->attach (
		1942	on_reply => sub {
		1943	my ($ns, $msg) = @_;
		1944
		1945	# this weird shuffling is so that direct followup queries
		1946	# get handled first
		1947	my $queue = delete $ns->{query_queue}
		1948	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1949
		1950	(shift @$queue)->[1]->($msg);
		1951
		1952	push @{ $ns->{query_queue} }, @$queue;
		1953
		1954	if (@{ $ns->{query_queue} } == @$queue) {
		1955	if (@$queue) {
		1956	$ns->send_packet ($ns->{query_queue}[0][0]);
		1957	} else {
		1958	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1959	}
		1960	}
		1961	},
		1962	);
		1963
		1964	=item $client->async (\&cb)
		1965
		1966	Create a new coroutine, running the specified callback. The coroutine will
		1967	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1968	or loss of connection).
		1969
		1970	=cut
		1971
		1972	sub cf::client::async {
		1973	my ($self, $cb) = @_;
		1974
		1975	my $coro = &Coro::async ($cb);
		1976
		1977	$coro->on_destroy (sub {
		1978	delete $self->{_coro}{$coro+0};
		1979	});
		1980
		1981	$self->{_coro}{$coro+0} = $coro;
		1982
		1983	$coro
		1984	}
		1985
		1986	cf::client->attach (
		1987	on_destroy => sub {
		1988	my ($ns) = @_;
		1989
		1990	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1991	},
		1992	);
815		1993
816	=back	1994	=back
817		1995
818	=cut
819
820	#############################################################################
821		1996
822	=head2 SAFE SCRIPTING	1997	=head2 SAFE SCRIPTING
823		1998
824	Functions that provide a safe environment to compile and execute	1999	Functions that provide a safe environment to compile and execute
825	snippets of perl code without them endangering the safety of the server	2000	snippets of perl code without them endangering the safety of the server
826	itself. Looping constructs, I/O operators and other built-in functionality	2001	itself. Looping constructs, I/O operators and other built-in functionality
827	is not available in the safe scripting environment, and the number of	2002	is not available in the safe scripting environment, and the number of
828	functions and methods that cna be called is greatly reduced.	2003	functions and methods that can be called is greatly reduced.
829		2004
830	=cut	2005	=cut
831		2006
832	our $safe = new Safe "safe";	2007	our $safe = new Safe "safe";
833	our $safe_hole = new Safe::Hole;	2008	our $safe_hole = new Safe::Hole;
…		…
840		2015
841	=pod	2016	=pod
842		2017
843	The following fucntions and emthods are available within a safe environment:	2018	The following fucntions and emthods are available within a safe environment:
844		2019
845	cf::object contr pay_amount pay_player	2020	cf::object contr pay_amount pay_player map
846	cf::object::player player	2021	cf::object::player player
847	cf::player peaceful	2022	cf::player peaceful
		2023	cf::map trigger
848		2024
849	=cut	2025	=cut
850		2026
851	for (	2027	for (
852	["cf::object" => qw(contr pay_amount pay_player)],	2028	["cf::object" => qw(contr pay_amount pay_player map)],
853	["cf::object::player" => qw(player)],	2029	["cf::object::player" => qw(player)],
854	["cf::player" => qw(peaceful)],	2030	["cf::player" => qw(peaceful)],
		2031	["cf::map" => qw(trigger)],
855	) {	2032	) {
856	no strict 'refs';	2033	no strict 'refs';
857	my ($pkg, @funs) = @$_;	2034	my ($pkg, @funs) = @$_;
858	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2035	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
859	for @funs;	2036	for @funs;
…		…
969		2146
970	Immediately write the database to disk I<if it is dirty>.	2147	Immediately write the database to disk I<if it is dirty>.
971		2148
972	=cut	2149	=cut
973		2150
		2151	our $DB;
		2152
974	{	2153	{
975	my $db;
976	my $path = cf::localdir . "/database.pst";	2154	my $path = cf::localdir . "/database.pst";
977		2155
978	sub db_load() {	2156	sub db_load() {
979	warn "loading database $path\n";#d# remove later
980	$db = stat $path ? Storable::retrieve $path : { };	2157	$DB = stat $path ? Storable::retrieve $path : { };
981	}	2158	}
982		2159
983	my $pid;	2160	my $pid;
984		2161
985	sub db_save() {	2162	sub db_save() {
986	warn "saving database $path\n";#d# remove later
987	waitpid $pid, 0 if $pid;	2163	waitpid $pid, 0 if $pid;
988	if (0 == ($pid = fork)) {	2164	if (0 == ($pid = fork)) {
989	$db->{_meta}{version} = 1;	2165	$DB->{_meta}{version} = 1;
990	Storable::nstore $db, "$path~";	2166	Storable::nstore $DB, "$path~";
991	rename "$path~", $path;	2167	rename "$path~", $path;
992	cf::_exit 0 if defined $pid;	2168	cf::_exit 0 if defined $pid;
993	}	2169	}
994	}	2170	}
995		2171
…		…
998	sub db_sync() {	2174	sub db_sync() {
999	db_save if $dirty;	2175	db_save if $dirty;
1000	undef $dirty;	2176	undef $dirty;
1001	}	2177	}
1002		2178
1003	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2179	my $idle = Event->idle (min => 10, max => 20, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1004	db_sync;	2180	db_sync;
1005	});	2181	});
1006		2182
1007	sub db_dirty() {	2183	sub db_dirty() {
1008	$dirty = 1;	2184	$dirty = 1;
1009	$idle->start;	2185	$idle->start;
1010	}	2186	}
1011		2187
1012	sub db_get($;$) {	2188	sub db_get($;$) {
1013	@_ >= 2	2189	@_ >= 2
1014	? $db->{$_[0]}{$_[1]}	2190	? $DB->{$_[0]}{$_[1]}
1015	: ($db->{$_[0]} ||= { })	2191	: ($DB->{$_[0]} ||= { })
1016	}	2192	}
1017		2193
1018	sub db_put($$;$) {	2194	sub db_put($$;$) {
1019	if (@_ >= 3) {	2195	if (@_ >= 3) {
1020	$db->{$_[0]}{$_[1]} = $_[2];	2196	$DB->{$_[0]}{$_[1]} = $_[2];
1021	} else {	2197	} else {
1022	$db->{$_[0]} = $_[1];	2198	$DB->{$_[0]} = $_[1];
1023	}	2199	}
1024	db_dirty;	2200	db_dirty;
1025	}	2201	}
1026		2202
1027	attach_global	2203	cf::global->attach (
1028	prio => 10000,	2204	prio => 10000,
1029	on_cleanup => sub {	2205	on_cleanup => sub {
1030	db_sync;	2206	db_sync;
1031	},	2207	},
1032	;	2208	);
1033	}	2209	}
1034		2210
1035	#############################################################################	2211	#############################################################################
1036	# the server's main()	2212	# the server's main()
1037		2213
…		…
1039	open my $fh, "<:utf8", cf::confdir . "/config"	2215	open my $fh, "<:utf8", cf::confdir . "/config"
1040	or return;	2216	or return;
1041		2217
1042	local $/;	2218	local $/;
1043	*CFG = YAML::Syck::Load <$fh>;	2219	*CFG = YAML::Syck::Load <$fh>;
		2220
		2221	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2222
		2223	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2224	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2225
		2226	if (exists $CFG{mlockall}) {
		2227	eval {
		2228	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2229	and die "WARNING: m(un)lockall failed: $!\n";
		2230	};
		2231	warn $@ if $@;
		2232	}
1044	}	2233	}
1045		2234
1046	sub main {	2235	sub main {
		2236	# we must not ever block the main coroutine
		2237	local $Coro::idle = sub {
		2238	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2239	(async {
		2240	Event::one_event;
		2241	})->prio (Coro::PRIO_MAX);
		2242	};
		2243
1047	cfg_load;	2244	cfg_load;
1048	db_load;	2245	db_load;
1049	load_extensions;	2246	load_extensions;
		2247
		2248	$TICK_WATCHER->start;
1050	Event::loop;	2249	Event::loop;
1051	}	2250	}
1052		2251
1053	#############################################################################	2252	#############################################################################
1054	# initialisation	2253	# initialisation and cleanup
1055		2254
		2255	# install some emergency cleanup handlers
		2256	BEGIN {
		2257	for my $signal (qw(INT HUP TERM)) {
		2258	Event->signal (
		2259	data => WF_AUTOCANCEL,
		2260	signal => $signal,
		2261	cb => sub {
		2262	cf::cleanup "SIG$signal";
		2263	},
		2264	);
		2265	}
		2266	}
		2267
		2268	sub emergency_save() {
		2269	my $freeze_guard = cf::freeze_mainloop;
		2270
		2271	warn "enter emergency perl save\n";
		2272
		2273	cf::sync_job {
		2274	# use a peculiar iteration method to avoid tripping on perl
		2275	# refcount bugs in for. also avoids problems with players
		2276	# and maps saved/destroyed asynchronously.
		2277	warn "begin emergency player save\n";
		2278	for my $login (keys %cf::PLAYER) {
		2279	my $pl = $cf::PLAYER{$login} or next;
		2280	$pl->valid or next;
		2281	$pl->save;
		2282	}
		2283	warn "end emergency player save\n";
		2284
		2285	warn "begin emergency map save\n";
		2286	for my $path (keys %cf::MAP) {
		2287	my $map = $cf::MAP{$path} or next;
		2288	$map->valid or next;
		2289	$map->save;
		2290	}
		2291	warn "end emergency map save\n";
		2292	};
		2293
		2294	warn "leave emergency perl save\n";
		2295	}
		2296
1056	sub _perl_reload(&) {	2297	sub reload() {
1057	my ($msg) = @_;	2298	# can/must only be called in main
		2299	if ($Coro::current != $Coro::main) {
		2300	warn "can only reload from main coroutine";
		2301	return;
		2302	}
1058		2303
1059	$msg->("reloading...");	2304	warn "reloading...";
		2305
		2306	warn "cancelling server ticker";
		2307	$TICK_WATCHER->cancel;
		2308
		2309	cf::emergency_save;
1060		2310
1061	eval {	2311	eval {
1062	# cancel all watchers	2312	# if anything goes wrong in here, we should simply crash as we already saved
		2313
		2314	warn "syncing database to disk";
		2315	cf::db_sync;
		2316
		2317	warn "cancelling all WF_AUTOCANCEL watchers";
1063	$_->cancel for Event::all_watchers;	2318	for (Event::all_watchers) {
		2319	$_->cancel if $_->data & WF_AUTOCANCEL;
		2320	}
1064		2321
1065	# unload all extensions	2322	warn "flushing outstanding aio requests";
1066	for (@exts) {	2323	for (;;) {
1067	$msg->("unloading <$_>");	2324	IO::AIO::flush;
1068	unload_extension $_;	2325	Coro::cede;
		2326	last unless IO::AIO::nreqs;
		2327	warn "iterate...";
		2328	}
		2329
		2330	warn "cancelling all extension coros";
		2331	$_->cancel for values %EXT_CORO;
		2332	%EXT_CORO = ();
		2333
		2334	warn "removing commands";
		2335	%COMMAND = ();
		2336
		2337	warn "removing ext commands";
		2338	%EXTCMD = ();
		2339
		2340	warn "unloading/nuking all extensions";
		2341	for my $pkg (@EXTS) {
		2342	warn "... unloading $pkg";
		2343
		2344	if (my $cb = $pkg->can ("unload")) {
		2345	eval {
		2346	$cb->($pkg);
		2347	1
		2348	} or warn "$pkg unloaded, but with errors: $@";
1069	}	2349	}
1070		2350
		2351	warn "... nuking $pkg";
		2352	Symbol::delete_package $pkg;
		2353	}
		2354
1071	# unload all modules loaded from $LIBDIR	2355	warn "unloading all perl modules loaded from $LIBDIR";
1072	while (my ($k, $v) = each %INC) {	2356	while (my ($k, $v) = each %INC) {
1073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2357	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1074		2358
1075	$msg->("removing <$k>");	2359	warn "... unloading $k";
1076	delete $INC{$k};	2360	delete $INC{$k};
1077		2361
1078	$k =~ s/\.pm$//;	2362	$k =~ s/\.pm$//;
1079	$k =~ s/\//::/g;	2363	$k =~ s/\//::/g;
1080		2364
…		…
1083	}	2367	}
1084		2368
1085	Symbol::delete_package $k;	2369	Symbol::delete_package $k;
1086	}	2370	}
1087		2371
1088	# sync database to disk
1089	cf::db_sync;
1090
1091	# get rid of safe::, as good as possible	2372	warn "getting rid of safe::, as good as possible";
1092	Symbol::delete_package "safe::$_"	2373	Symbol::delete_package "safe::$_"
1093	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2374	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1094		2375
1095	# remove register_script_function callbacks
1096	# TODO
1097
1098	# unload cf.pm "a bit"	2376	warn "unloading cf.pm \"a bit\"";
1099	delete $INC{"cf.pm"};	2377	delete $INC{"cf.pm"};
1100		2378
1101	# don't, removes xs symbols, too,	2379	# don't, removes xs symbols, too,
1102	# and global variables created in xs	2380	# and global variables created in xs
1103	#Symbol::delete_package __PACKAGE__;	2381	#Symbol::delete_package __PACKAGE__;
1104		2382
1105	# reload cf.pm	2383	warn "unload completed, starting to reload now";
		2384
1106	$msg->("reloading cf.pm");	2385	warn "reloading cf.pm";
1107	require cf;	2386	require cf;
		2387	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1108		2388
1109	# load config and database again	2389	warn "loading config and database again";
1110	cf::cfg_load;	2390	cf::cfg_load;
1111	cf::db_load;	2391	cf::db_load;
1112		2392
1113	# load extensions	2393	warn "loading extensions";
1114	$msg->("load extensions");
1115	cf::load_extensions;	2394	cf::load_extensions;
1116		2395
1117	# reattach attachments to objects	2396	warn "reattaching attachments to objects/players";
1118	$msg->("reattach");
1119	_global_reattach;	2397	_global_reattach;
		2398	warn "reattaching attachments to maps";
		2399	reattach $_ for values %MAP;
		2400
		2401	warn "restarting server ticker";
		2402
		2403	$TICK_WATCHER->start;
1120	};	2404	};
1121	$msg->($@) if $@;
1122		2405
1123	$msg->("reloaded");	2406	if ($@) {
		2407	warn $@;
		2408	warn "error while reloading, exiting.";
		2409	exit 1;
		2410	}
		2411
		2412	warn "reloaded";
1124	};	2413	};
1125		2414
1126	sub perl_reload() {	2415	our $RELOAD_WATCHER; # used only during reload
1127	_perl_reload {
1128	warn $_[0];
1129	print "$_[0]\n";
1130	};
1131	}
1132		2416
1133	register_command "perl-reload", 0, sub {	2417	register_command "reload" => sub {
1134	my ($who, $arg) = @_;	2418	my ($who, $arg) = @_;
1135		2419
1136	if ($who->flag (FLAG_WIZ)) {	2420	if ($who->flag (FLAG_WIZ)) {
1137	_perl_reload {	2421	$who->message ("reloading server.");
1138	warn $_[0];	2422
1139	$who->message ($_[0]);	2423	# doing reload synchronously and two reloads happen back-to-back,
		2424	# coro crashes during coro_state_free->destroy here.
		2425
		2426	$RELOAD_WATCHER ||= Event->timer (after => 0, data => WF_AUTOCANCEL, cb => sub {
		2427	reload;
		2428	undef $RELOAD_WATCHER;
1140	};	2429	});
1141	}	2430	}
1142	};	2431	};
1143		2432
1144	register "<global>", __PACKAGE__;
1145
1146	unshift @INC, $LIBDIR;	2433	unshift @INC, $LIBDIR;
1147		2434
		2435	my $bug_warning = 0;
		2436
1148	$TICK_WATCHER = Event->timer (	2437	$TICK_WATCHER = Event->timer (
		2438	reentrant => 0,
		2439	parked => 1,
1149	prio => 1,	2440	prio => 0,
1150	at => $NEXT_TICK || 1,	2441	at => $NEXT_TICK || $TICK,
		2442	data => WF_AUTOCANCEL,
1151	cb => sub {	2443	cb => sub {
		2444	if ($Coro::current != $Coro::main) {
		2445	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2446	unless ++$bug_warning > 10;
		2447	return;
		2448	}
		2449
		2450	$NOW = Event::time;
		2451
1152	cf::server_tick; # one server iteration	2452	cf::server_tick; # one server iteration
1153		2453	$RUNTIME += $TICK;
1154	my $NOW = Event::time;
1155	$NEXT_TICK += $TICK;	2454	$NEXT_TICK += $TICK;
1156		2455
		2456	$WAIT_FOR_TICK->broadcast;
		2457	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2458
1157	# if we are delayed by four ticks, skip them all	2459	# if we are delayed by four ticks or more, skip them all
1158	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2460	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1159		2461
1160	$TICK_WATCHER->at ($NEXT_TICK);	2462	$TICK_WATCHER->at ($NEXT_TICK);
1161	$TICK_WATCHER->start;	2463	$TICK_WATCHER->start;
1162	},	2464	},
1163	);	2465	);
1164		2466
		2467	IO::AIO::max_poll_time $TICK * 0.2;
		2468
		2469	$AIO_POLL_WATCHER = Event->io (
		2470	fd => IO::AIO::poll_fileno,
		2471	poll => 'r',
		2472	prio => 5,
		2473	data => WF_AUTOCANCEL,
		2474	cb => \&IO::AIO::poll_cb,
		2475	);
		2476
		2477	$WRITE_RUNTIME_WATCHER = Event->timer (
		2478	data => WF_AUTOCANCEL,
		2479	after => 1,
		2480	interval => 10,
		2481	cb => Coro::unblock_sub {
		2482	write_runtime
		2483	or warn "ERROR: unable to write runtime file: $!";
		2484	},
		2485	);
		2486
		2487	END { cf::emergency_save }
		2488
1165	1	2489	1
1166		2490

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