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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.83 by root, Mon Dec 11 01:30:41 2006 UTC vs.
Revision 1.191 by root, Tue Jan 23 01:05:18 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;
10	use IO::AIO ();	23	use IO::AIO 2.32 ();
11	use YAML::Syck ();	24	use YAML::Syck ();
12	use Time::HiRes;	25	use Time::HiRes;
13	use Event;	26
14	$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
15		30
16	# 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?
17	$YAML::Syck::ImplicitUnicode = 1;	32	$YAML::Syck::ImplicitUnicode = 1;
18		33
19	use strict;	34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		35
21	_init_vars;
22
23	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
24	our @EVENT;	44	our @EVENT;
25	our $LIBDIR = maps_directory "perl";	45	our $LIBDIR = datadir . "/ext";
26		46
27	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
28	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
29	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
30		53
31	our %CFG;	54	our %CFG;
32		55
33	our $uptime;#d#	56	our $UPTIME; $UPTIME ||= time;
34	our $UPTIME;	57	our $RUNTIME;
35	$UPTIME ||= $uptime;#d#	58
36	$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;
37		87
38	#############################################################################	88	#############################################################################
39		89
40	=head2 GLOBAL VARIABLES	90	=head2 GLOBAL VARIABLES
41		91
42	=over 4	92	=over 4
43		93
44	=item $cf::UPTIME	94	=item $cf::UPTIME
45		95
46	The timestamp of the server start (so not actually an uptime).	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.
47		102
48	=item $cf::LIBDIR	103	=item $cf::LIBDIR
49		104
50	The perl library directory, where extensions and cf-specific modules can	105	The perl library directory, where extensions and cf-specific modules can
51	be found. It will be added to C<@INC> automatically.	106	be found. It will be added to C<@INC> automatically.
52		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
53	=item $cf::TICK	112	=item $cf::TICK
54		113
55	The interval between server ticks, in seconds.	114	The interval between server ticks, in seconds.
56		115
57	=item %cf::CFG	116	=item %cf::CFG
58		117
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	118	Configuration for the server, loaded from C</etc/crossfire/config>, or
60	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.
61		127
62	=back	128	=back
63		129
64	=cut	130	=cut
65		131
66	BEGIN {	132	BEGIN {
67	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
69	$msg .= "\n"	137	$msg .= "\n"
70	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
71		139
72	print STDERR "cfperl: $msg";
73	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
74	};	141	};
75	}	142	}
76		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';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
78		150
79	# 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
80	# within the Safe compartment.	152	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
82	no strict 'refs';	160	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	162	}
85		163
86	$Event::DIED = sub {	164	$Event::DIED = sub {
87	warn "error in event callback: @_";	165	warn "error in event callback: @_";
88	};	166	};
89		167
90	my %ext_pkg;
91	my @exts;
92	my @hook;
93	my %command;
94	my %extcmd;
95
96	=head2 UTILITY FUNCTIONS	168	=head2 UTILITY FUNCTIONS
97		169
98	=over 4	170	=over 4
99		171
		172	=item dumpval $ref
		173
100	=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	}
101		194
102	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
103		196
104	=item $ref = cf::from_json $json	197	=item $ref = cf::from_json $json
105		198
…		…
121	sub to_json($) {	214	sub to_json($) {
122	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
123	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
124	}	217	}
125		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 + 90 + 10;
		355	# 10 is the runtime save interval, for a monotonic clock
		356	# 60 allows for the watchdog to kill the server.
		357
		358	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		359	and return;
		360
		361	aio_fsync $fh
		362	and return;
		363
		364	close $fh
		365	or return;
		366
		367	aio_rename "$runtime~", $runtime
		368	and return;
		369
		370	1
		371	}
		372
126	=back	373	=back
127		374
128	=cut	375	=cut
129		376
130	#############################################################################	377	#############################################################################
131		378
132	=head2 EVENTS AND OBJECT ATTACHMENTS	379	=head2 ATTACHABLE OBJECTS
		380
		381	Many objects in crossfire are so-called attachable objects. That means you can
		382	attach callbacks/event handlers (a collection of which is called an "attachment")
		383	to it. All such attachable objects support the following methods.
		384
		385	In the following description, CLASS can be any of C<global>, C<object>
		386	C<player>, C<client> or C<map> (i.e. the attachable objects in
		387	crossfire+).
133		388
134	=over 4	389	=over 4
135		390
136	=item $object->attach ($attachment, key => $value...)
137
138	=item $object->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to an object.
141
142	=item $player->attach ($attachment, key => $value...)
143
144	=item $player->detach ($attachment)
145
146	Attach/detach a pre-registered attachment to a player.
147
148	=item $map->attach ($attachment, key => $value...)	391	=item $attachable->attach ($attachment, key => $value...)
149		392
150	=item $map->detach ($attachment)	393	=item $attachable->detach ($attachment)
151		394
152	Attach/detach a pre-registered attachment to a map.	395	Attach/detach a pre-registered attachment to a specific object and give it
		396	the specified key/value pairs as arguments.
153		397
154	=item $bool = $object->attached ($name)	398	Example, attach a minesweeper attachment to the given object, making it a
		399	10x10 minesweeper game:
155		400
156	=item $bool = $player->attached ($name)	401	$obj->attach (minesweeper => width => 10, height => 10);
157		402
158	=item $bool = $map->attached ($name)	403	=item $bool = $attachable->attached ($name)
159		404
160	Checks wether the named attachment is currently attached to the object.	405	Checks wether the named attachment is currently attached to the object.
161		406
162	=item cf::attach_global ...	407	=item cf::CLASS->attach ...
163		408
164	Attach handlers for global events.	409	=item cf::CLASS->detach ...
165		410
166	This and all following C<attach_*>-functions expect any number of the	411	Define an anonymous attachment and attach it to all objects of the given
167	following handler/hook descriptions:	412	CLASS. See the next function for an explanation of its arguments.
		413
		414	You can attach to global events by using the C<cf::global> class.
		415
		416	Example, log all player logins:
		417
		418	cf::player->attach (
		419	on_login => sub {
		420	my ($pl) = @_;
		421	...
		422	},
		423	);
		424
		425	Example, attach to the jeweler skill:
		426
		427	cf::object->attach (
		428	type => cf::SKILL,
		429	subtype => cf::SK_JEWELER,
		430	on_use_skill => sub {
		431	my ($sk, $ob, $part, $dir, $msg) = @_;
		432	...
		433	},
		434	);
		435
		436	=item cf::CLASS::attachment $name, ...
		437
		438	Register an attachment by C<$name> through which attachable objects of the
		439	given CLASS can refer to this attachment.
		440
		441	Some classes such as crossfire maps and objects can specify attachments
		442	that are attached at load/instantiate time, thus the need for a name.
		443
		444	These calls expect any number of the following handler/hook descriptions:
168		445
169	=over 4	446	=over 4
170		447
171	=item prio => $number	448	=item prio => $number
172		449
…		…
174	by another C<prio> setting). Lower priority handlers get executed	451	by another C<prio> setting). Lower priority handlers get executed
175	earlier. The default priority is C<0>, and many built-in handlers are	452	earlier. The default priority is C<0>, and many built-in handlers are
176	registered at priority C<-1000>, so lower priorities should not be used	453	registered at priority C<-1000>, so lower priorities should not be used
177	unless you know what you are doing.	454	unless you know what you are doing.
178		455
		456	=item type => $type
		457
		458	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		459	given type of objects only (the additional parameter C<subtype> can be
		460	used to further limit to the given subtype).
		461
179	=item on_I<event> => \&cb	462	=item on_I<event> => \&cb
180		463
181	Call the given code reference whenever the named event happens (event is	464	Call the given code reference whenever the named event happens (event is
182	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	465	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
183	handlers are recognised generally depends on the type of object these	466	handlers are recognised generally depends on the type of object these
…		…
192	package and register them. Only handlers for eevents supported by the	475	package and register them. Only handlers for eevents supported by the
193	object/class are recognised.	476	object/class are recognised.
194		477
195	=back	478	=back
196		479
197	=item cf::attach_to_type $object_type, $subtype, ...	480	Example, define an attachment called "sockpuppet" that calls the given
		481	event handler when a monster attacks:
198		482
199	Attach handlers for a specific object type (e.g. TRANSPORT) and	483	cf::object::attachment sockpuppet =>
200	subtype. If C<$subtype> is zero or undef, matches all objects of the given	484	on_skill_attack => sub {
201	type.	485	my ($self, $victim) = @_;
202		486	...
203	=item cf::attach_to_objects ...
204
205	Attach handlers to all objects. Do not use this except for debugging or
206	very rare events, as handlers are (obviously) called for I<all> objects in
207	the game.
208
209	=item cf::attach_to_players ...
210
211	Attach handlers to all players.
212
213	=item cf::attach_to_maps ...
214
215	Attach handlers to all maps.
216
217	=item cf:register_attachment $name, ...
218
219	Register an attachment by name through which objects can refer to this
220	attachment.
221
222	=item cf:register_player_attachment $name, ...
223
224	Register an attachment by name through which players can refer to this
225	attachment.
226
227	=item cf:register_map_attachment $name, ...
228
229	Register an attachment by name through which maps can refer to this
230	attachment.
231
232	=cut
233
234	# the following variables are defined in .xs and must not be re-created
235	our @CB_GLOBAL = (); # registry for all global events
236	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
237	our @CB_PLAYER = ();
238	our @CB_TYPE = (); # registry for type (cf-object class) based events
239	our @CB_MAP = ();
240
241	my %attachment;
242
243	sub _attach_cb($\%$$$) {
244	my ($registry, $undo, $event, $prio, $cb) = @_;
245
246	use sort 'stable';
247
248	$cb = [$prio, $cb];
249
250	@{$registry->[$event]} = sort
251	{ $a->[0] cmp $b->[0] }
252	@{$registry->[$event] || []}, $cb;
253
254	push @{$undo->{cb}}, [$event, $cb];
255	}
256
257	# attach handles attaching event callbacks
258	# the only thing the caller has to do is pass the correct
259	# registry (== where the callback attaches to).
260	sub _attach(\@$@) {
261	my ($registry, $klass, @arg) = @_;
262
263	my $prio = 0;
264
265	my %undo = (
266	registry => $registry,
267	cb => [],
268	);
269
270	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
271
272	while (@arg) {
273	my $type = shift @arg;
274
275	if ($type eq "prio") {
276	$prio = shift @arg;
277
278	} elsif ($type eq "package") {
279	my $pkg = shift @arg;
280
281	while (my ($name, $id) = each %cb_id) {
282	if (my $cb = $pkg->can ($name)) {
283	_attach_cb $registry, %undo, $id, $prio, $cb;
284	}
285	}	487	}
286
287	} elsif (exists $cb_id{$type}) {
288	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
289
290	} elsif (ref $type) {
291	warn "attaching objects not supported, ignoring.\n";
292
293	} else {
294	shift @arg;
295	warn "attach argument '$type' not supported, ignoring.\n";
296	}
297	}
298
299	\%undo
300	}
301
302	sub _attach_attachment {
303	my ($obj, $name, %arg) = @_;
304
305	return if exists $obj->{_attachment}{$name};
306
307	my $res;
308
309	if (my $attach = $attachment{$name}) {
310	my $registry = $obj->registry;
311
312	for (@$attach) {
313	my ($klass, @attach) = @$_;
314	$res = _attach @$registry, $klass, @attach;
315	}
316
317	$obj->{$name} = \%arg;
318	} else {
319	warn "object uses attachment '$name' that is not available, postponing.\n";
320	}
321
322	$obj->{_attachment}{$name} = undef;
323
324	$res->{attachment} = $name;
325	$res
326	}
327
328	*cf::object::attach =
329	*cf::player::attach =
330	*cf::map::attach = sub {
331	my ($obj, $name, %arg) = @_;
332
333	_attach_attachment $obj, $name, %arg;
334	};
335
336	# all those should be optimised
337	*cf::object::detach =
338	*cf::player::detach =
339	*cf::map::detach = sub {
340	my ($obj, $name) = @_;
341
342	delete $obj->{_attachment}{$name};
343	reattach ($obj);
344	};
345
346	*cf::object::attached =
347	*cf::player::attached =
348	*cf::map::attached = sub {
349	my ($obj, $name) = @_;
350
351	exists $obj->{_attachment}{$name}
352	};
353
354	sub attach_global {
355	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
356	}
357
358	sub attach_to_type {
359	my $type = shift;
360	my $subtype = shift;
361
362	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
363	}
364
365	sub attach_to_objects {
366	_attach @CB_OBJECT, KLASS_OBJECT, @_
367	}
368
369	sub attach_to_players {
370	_attach @CB_PLAYER, KLASS_PLAYER, @_
371	}
372
373	sub attach_to_maps {
374	_attach @CB_MAP, KLASS_MAP, @_
375	}
376
377	sub register_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_OBJECT, @_]];
381	}
382
383	sub register_player_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_PLAYER, @_]];
387	}
388
389	sub register_map_attachment {
390	my $name = shift;
391
392	$attachment{$name} = [[KLASS_MAP, @_]];
393	}
394
395	our $override;
396	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
397
398	sub override {
399	$override = 1;
400	@invoke_results = ();
401	}
402
403	sub do_invoke {
404	my $event = shift;
405	my $callbacks = shift;
406
407	@invoke_results = ();
408
409	local $override;
410
411	for (@$callbacks) {
412	eval { &{$_->[1]} };
413
414	if ($@) {
415	warn "$@";
416	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
417	override;
418	}
419
420	return 1 if $override;
421	}
422
423	0	488	}
424	}
425		489
426	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	490	=item $attachable->valid
427
428	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
429
430	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
431
432	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
433
434	Generate a global/object/player/map-specific event with the given arguments.
435
436	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
437	removed in future versions), and there is no public API to access override
438	results (if you must, access C<@cf::invoke_results> directly).
439
440	=back
441
442	=cut
443
444	#############################################################################
445
446	=head2 METHODS VALID FOR ALL CORE OBJECTS
447
448	=over 4
449
450	=item $object->valid, $player->valid, $map->valid
451		491
452	Just because you have a perl object does not mean that the corresponding	492	Just because you have a perl object does not mean that the corresponding
453	C-level object still exists. If you try to access an object that has no	493	C-level object still exists. If you try to access an object that has no
454	valid C counterpart anymore you get an exception at runtime. This method	494	valid C counterpart anymore you get an exception at runtime. This method
455	can be used to test for existence of the C object part without causing an	495	can be used to test for existence of the C object part without causing an
456	exception.	496	exception.
457		497
		498	=cut
		499
		500	# the following variables are defined in .xs and must not be re-created
		501	our @CB_GLOBAL = (); # registry for all global events
		502	our @CB_ATTACHABLE = (); # registry for all attachables
		503	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		504	our @CB_PLAYER = ();
		505	our @CB_CLIENT = ();
		506	our @CB_TYPE = (); # registry for type (cf-object class) based events
		507	our @CB_MAP = ();
		508
		509	my %attachment;
		510
		511	sub cf::attachable::thawer_merge {
		512	# simply override everything except _meta
		513	local $_[0]{_meta};
		514	%{$_[0]} = %{$_[1]};
		515	}
		516
		517	sub _attach_cb($$$$) {
		518	my ($registry, $event, $prio, $cb) = @_;
		519
		520	use sort 'stable';
		521
		522	$cb = [$prio, $cb];
		523
		524	@{$registry->[$event]} = sort
		525	{ $a->[0] cmp $b->[0] }
		526	@{$registry->[$event] || []}, $cb;
		527	}
		528
		529	# hack
		530	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		531
		532	# attach handles attaching event callbacks
		533	# the only thing the caller has to do is pass the correct
		534	# registry (== where the callback attaches to).
		535	sub _attach {
		536	my ($registry, $klass, @arg) = @_;
		537
		538	my $object_type;
		539	my $prio = 0;
		540	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		541
		542	#TODO: get rid of this hack
		543	if ($attachable_klass{$klass}) {
		544	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		545	}
		546
		547	while (@arg) {
		548	my $type = shift @arg;
		549
		550	if ($type eq "prio") {
		551	$prio = shift @arg;
		552
		553	} elsif ($type eq "type") {
		554	$object_type = shift @arg;
		555	$registry = $CB_TYPE[$object_type] ||= [];
		556
		557	} elsif ($type eq "subtype") {
		558	defined $object_type or Carp::croak "subtype specified without type";
		559	my $object_subtype = shift @arg;
		560	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		561
		562	} elsif ($type eq "package") {
		563	my $pkg = shift @arg;
		564
		565	while (my ($name, $id) = each %cb_id) {
		566	if (my $cb = $pkg->can ($name)) {
		567	_attach_cb $registry, $id, $prio, $cb;
		568	}
		569	}
		570
		571	} elsif (exists $cb_id{$type}) {
		572	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		573
		574	} elsif (ref $type) {
		575	warn "attaching objects not supported, ignoring.\n";
		576
		577	} else {
		578	shift @arg;
		579	warn "attach argument '$type' not supported, ignoring.\n";
		580	}
		581	}
		582	}
		583
		584	sub _object_attach {
		585	my ($obj, $name, %arg) = @_;
		586
		587	return if exists $obj->{_attachment}{$name};
		588
		589	if (my $attach = $attachment{$name}) {
		590	my $registry = $obj->registry;
		591
		592	for (@$attach) {
		593	my ($klass, @attach) = @$_;
		594	_attach $registry, $klass, @attach;
		595	}
		596
		597	$obj->{$name} = \%arg;
		598	} else {
		599	warn "object uses attachment '$name' that is not available, postponing.\n";
		600	}
		601
		602	$obj->{_attachment}{$name} = undef;
		603	}
		604
		605	sub cf::attachable::attach {
		606	if (ref $_[0]) {
		607	_object_attach @_;
		608	} else {
		609	_attach shift->_attach_registry, @_;
		610	}
		611	};
		612
		613	# all those should be optimised
		614	sub cf::attachable::detach {
		615	my ($obj, $name) = @_;
		616
		617	if (ref $obj) {
		618	delete $obj->{_attachment}{$name};
		619	reattach ($obj);
		620	} else {
		621	Carp::croak "cannot, currently, detach class attachments";
		622	}
		623	};
		624
		625	sub cf::attachable::attached {
		626	my ($obj, $name) = @_;
		627
		628	exists $obj->{_attachment}{$name}
		629	}
		630
		631	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		632	eval "#line " . __LINE__ . " 'cf.pm'
		633	sub cf::\L$klass\E::_attach_registry {
		634	(\\\@CB_$klass, KLASS_$klass)
		635	}
		636
		637	sub cf::\L$klass\E::attachment {
		638	my \$name = shift;
		639
		640	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		641	}
		642	";
		643	die if $@;
		644	}
		645
		646	our $override;
		647	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		648
		649	sub override {
		650	$override = 1;
		651	@invoke_results = ();
		652	}
		653
		654	sub do_invoke {
		655	my $event = shift;
		656	my $callbacks = shift;
		657
		658	@invoke_results = ();
		659
		660	local $override;
		661
		662	for (@$callbacks) {
		663	eval { &{$_->[1]} };
		664
		665	if ($@) {
		666	warn "$@";
		667	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		668	override;
		669	}
		670
		671	return 1 if $override;
		672	}
		673
		674	0
		675	}
		676
		677	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		678
		679	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		680
		681	Generate an object-specific event with the given arguments.
		682
		683	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		684	removed in future versions), and there is no public API to access override
		685	results (if you must, access C<@cf::invoke_results> directly).
		686
458	=back	687	=back
459		688
460	=cut	689	=cut
461
462	*cf::object::valid =
463	*cf::player::valid =
464	*cf::map::valid = \&cf::_valid;
465		690
466	#############################################################################	691	#############################################################################
467	# object support	692	# object support
468		693
469	sub instantiate {
470	my ($obj, $data) = @_;
471
472	$data = from_json $data;
473
474	for (@$data) {
475	my ($name, $args) = @$_;
476
477	$obj->attach ($name, %{$args || {} });
478	}
479	}
480
481	# basically do the same as instantiate, without calling instantiate
482	sub reattach {	694	sub reattach {
		695	# basically do the same as instantiate, without calling instantiate
483	my ($obj) = @_;	696	my ($obj) = @_;
		697
		698	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		699
484	my $registry = $obj->registry;	700	my $registry = $obj->registry;
485		701
486	@$registry = ();	702	@$registry = ();
487		703
488	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
489		705
490	for my $name (keys %{ $obj->{_attachment} || {} }) {	706	for my $name (keys %{ $obj->{_attachment} || {} }) {
491	if (my $attach = $attachment{$name}) {	707	if (my $attach = $attachment{$name}) {
492	for (@$attach) {	708	for (@$attach) {
493	my ($klass, @attach) = @$_;	709	my ($klass, @attach) = @$_;
494	_attach @$registry, $klass, @attach;	710	_attach $registry, $klass, @attach;
495	}	711	}
496	} else {	712	} else {
497	warn "object uses attachment '$name' that is not available, postponing.\n";	713	warn "object uses attachment '$name' that is not available, postponing.\n";
498	}	714	}
499	}	715	}
500	}	716	}
501		717
502	sub object_freezer_save {	718	cf::attachable->attach (
503	my ($filename, $rdata, $objs) = @_;
504
505	if (length $$rdata) {
506	warn sprintf "saving %s (%d,%d)\n",
507	$filename, length $$rdata, scalar @$objs;
508
509	if (open my $fh, ">:raw", "$filename~") {
510	chmod SAVE_MODE, $fh;
511	syswrite $fh, $$rdata;
512	close $fh;
513
514	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
517	close $fh;
518	rename "$filename.pst~", "$filename.pst";
519	} else {
520	unlink "$filename.pst";
521	}
522
523	rename "$filename~", $filename;
524	} else {
525	warn "FATAL: $filename~: $!\n";
526	}
527	} else {
528	unlink $filename;
529	unlink "$filename.pst";
530	}
531	}
532
533	sub object_freezer_as_string {
534	my ($rdata, $objs) = @_;
535
536	use Data::Dumper;
537
538	$$rdata . Dumper $objs
539	}
540
541	sub object_thawer_load {
542	my ($filename) = @_;
543
544	local $/;
545
546	my $av;
547
548	#TODO: use sysread etc.
549	if (open my $data, "<:raw:perlio", $filename) {
550	$data = <$data>;
551	if (open my $pst, "<:raw:perlio", "$filename.pst") {
552	$av = eval { (Storable::thaw <$pst>)->{objs} };
553	}
554	return ($data, $av);
555	}
556
557	()
558	}
559
560	attach_to_objects
561	prio => -1000000,	719	prio => -1000000,
		720	on_instantiate => sub {
		721	my ($obj, $data) = @_;
		722
		723	$data = from_json $data;
		724
		725	for (@$data) {
		726	my ($name, $args) = @$_;
		727
		728	$obj->attach ($name, %{$args || {} });
		729	}
		730	},
		731	on_reattach => \&reattach,
562	on_clone => sub {	732	on_clone => sub {
563	my ($src, $dst) = @_;	733	my ($src, $dst) = @_;
564		734
565	@{$dst->registry} = @{$src->registry};	735	@{$dst->registry} = @{$src->registry};
566		736
567	%$dst = %$src;	737	%$dst = %$src;
568		738
569	%{$dst->{_attachment}} = %{$src->{_attachment}}	739	%{$dst->{_attachment}} = %{$src->{_attachment}}
570	if exists $src->{_attachment};	740	if exists $src->{_attachment};
571	},	741	},
572	;	742	);
		743
		744	sub object_freezer_save {
		745	my ($filename, $rdata, $objs) = @_;
		746
		747	sync_job {
		748	if (length $$rdata) {
		749	warn sprintf "saving %s (%d,%d)\n",
		750	$filename, length $$rdata, scalar @$objs;
		751
		752	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		753	chmod SAVE_MODE, $fh;
		754	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		755	aio_fsync $fh;
		756	close $fh;
		757
		758	if (@$objs) {
		759	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		760	chmod SAVE_MODE, $fh;
		761	my $data = Storable::nfreeze { version => 1, objs => $objs };
		762	aio_write $fh, 0, (length $data), $data, 0;
		763	aio_fsync $fh;
		764	close $fh;
		765	aio_rename "$filename.pst~", "$filename.pst";
		766	}
		767	} else {
		768	aio_unlink "$filename.pst";
		769	}
		770
		771	aio_rename "$filename~", $filename;
		772	} else {
		773	warn "FATAL: $filename~: $!\n";
		774	}
		775	} else {
		776	aio_unlink $filename;
		777	aio_unlink "$filename.pst";
		778	}
		779	}
		780	}
		781
		782	sub object_freezer_as_string {
		783	my ($rdata, $objs) = @_;
		784
		785	use Data::Dumper;
		786
		787	$$rdata . Dumper $objs
		788	}
		789
		790	sub object_thawer_load {
		791	my ($filename) = @_;
		792
		793	my ($data, $av);
		794
		795	(aio_load $filename, $data) >= 0
		796	or return;
		797
		798	unless (aio_stat "$filename.pst") {
		799	(aio_load "$filename.pst", $av) >= 0
		800	or return;
		801	$av = eval { (Storable::thaw $av)->{objs} };
		802	}
		803
		804	warn sprintf "loading %s (%d)\n",
		805	$filename, length $data, scalar @{$av || []};#d#
		806	return ($data, $av);
		807	}
573		808
574	#############################################################################	809	#############################################################################
575	# old plug-in events	810	# command handling &c
576		811
577	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
578	my $extension = shift;
579	my $event_code = shift;
580		813
581	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
582	or return;	815	$name.
583		816
584	&$cb	817	=cut
585	}
586
587	sub inject_global_event {
588	my $event = shift;
589
590	my $cb = $hook[$event]
591	or return;
592
593	List::Util::max map &$_, values %$cb
594	}
595
596	sub inject_command {
597	my ($name, $obj, $params) = @_;
598
599	for my $cmd (@{ $command{$name} }) {
600	$cmd->[1]->($obj, $params);
601	}
602
603	-1
604	}
605		818
606	sub register_command {	819	sub register_command {
607	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
608		821
609	my $caller = caller;	822	my $caller = caller;
610	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
611		824
612	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
613	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
614	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
615		836
616	sub register_extcmd {	837	sub register_extcmd {
617	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
618		839
619	my $caller = caller;	840	$EXTCMD{$name} = $cb;
620	#warn "registering extcmd '$name' to '$caller'";
621
622	$extcmd{$name} = [$cb, $caller];
623	}	841	}
624		842
625	sub register {	843	cf::player->attach (
626	my ($base, $pkg) = @_;	844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
627		846
628	#TODO	847	my $cb = $COMMAND{$name}
629	}	848	or return;
		849
		850	for my $cmd (@$cb) {
		851	$cmd->[1]->($pl->ob, $params);
		852	}
		853
		854	cf::override;
		855	},
		856	on_extcmd => sub {
		857	my ($pl, $buf) = @_;
		858
		859	my $msg = eval { from_json $buf };
		860
		861	if (ref $msg) {
		862	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		863	if (my %reply = $cb->($pl, $msg)) {
		864	$pl->ext_reply ($msg->{msgid}, %reply);
		865	}
		866	}
		867	} else {
		868	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		869	}
		870
		871	cf::override;
		872	},
		873	);
630		874
631	sub load_extension {	875	sub load_extension {
632	my ($path) = @_;	876	my ($path) = @_;
633		877
634	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
635	my $base = $1;	879	my $base = $1;
636	my $pkg = $1;	880	my $pkg = $1;
637	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
638	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
639		883
640	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
641		885
642	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
643	or die "$path: $!";	887	or die "$path: $!";
644		888
645	my $source =	889	my $source =
646	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
647	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
648	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
649	. "\n};\n1";	893	. "\n};\n1";
650		894
651	eval $source	895	unless (eval $source) {
652	or die $@ ? "$path: $@\n"	896	my $msg = $@ ? "$path: $@\n"
653	: "extension disabled.\n";	897	: "extension disabled.\n";
654		898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
655	push @exts, $pkg;	899	warn $@;
656	$ext_pkg{$base} = $pkg;	900	warn "mandatory extension failed to load, exiting.\n";
657		901	exit 1;
658	# no strict 'refs';	902	}
659	# @{"$pkg\::ISA"} = ext::;	903	die $@;
660
661	register $base, $pkg;
662	}
663
664	sub unload_extension {
665	my ($pkg) = @_;
666
667	warn "removing extension $pkg\n";
668
669	# remove hooks
670	#TODO
671	# for my $idx (0 .. $#PLUGIN_EVENT) {
672	# delete $hook[$idx]{$pkg};
673	# }	904	}
674		905
675	# remove commands	906	push @EXTS, $pkg;
676	for my $name (keys %command) {
677	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
678
679	if (@cb) {
680	$command{$name} = \@cb;
681	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
682	} else {
683	delete $command{$name};
684	delete $COMMAND{"$name\000"};
685	}
686	}
687
688	# remove extcmds
689	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
690	delete $extcmd{$name};
691	}
692
693	if (my $cb = $pkg->can ("unload")) {
694	eval {
695	$cb->($pkg);
696	1
697	} or warn "$pkg unloaded, but with errors: $@";
698	}
699
700	Symbol::delete_package $pkg;
701	}	907	}
702		908
703	sub load_extensions {	909	sub load_extensions {
704	my $LIBDIR = maps_directory "perl";
705
706	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
707	next unless -r $ext;	911	next unless -r $ext;
708	eval {	912	eval {
709	load_extension $ext;	913	load_extension $ext;
710	1	914	1
711	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
712	}	916	}
713	}	917	}
714		918
715	#############################################################################	919	#############################################################################
716	# extcmd framework, basically convert ext <msg>
717	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
718		920
719	attach_to_players	921	=head2 CORE EXTENSIONS
720	on_extcmd => sub {	922
		923	Functions and methods that extend core crossfire objects.
		924
		925	=cut
		926
		927	package cf::player;
		928
		929	use Coro::AIO;
		930
		931	=head3 cf::player
		932
		933	=over 4
		934
		935	=item cf::player::find $login
		936
		937	Returns the given player object, loading it if necessary (might block).
		938
		939	=cut
		940
		941	sub playerdir($) {
		942	cf::localdir
		943	. "/"
		944	. cf::playerdir
		945	. "/"
		946	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		947	}
		948
		949	sub path($) {
		950	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		951
		952	(playerdir $login) . "/$login.pl"
		953	}
		954
		955	sub find_active($) {
		956	$cf::PLAYER{$_[0]}
		957	and $cf::PLAYER{$_[0]}->active
		958	and $cf::PLAYER{$_[0]}
		959	}
		960
		961	sub exists($) {
		962	my ($login) = @_;
		963
		964	$cf::PLAYER{$login}
		965	or cf::sync_job { !aio_stat path $login }
		966	}
		967
		968	sub find($) {
		969	return $cf::PLAYER{$_[0]} || do {
		970	my $login = $_[0];
		971
		972	my $guard = cf::lock_acquire "user_find:$login";
		973
		974	$cf::PLAYER{$_[0]} || do {
		975	my $pl = load_pl path $login
		976	or return;
		977	$cf::PLAYER{$login} = $pl
		978	}
		979	}
		980	}
		981
		982	sub save($) {
		983	my ($pl) = @_;
		984
		985	return if $pl->{deny_save};
		986
		987	my $path = path $pl;
		988	my $guard = cf::lock_acquire "user_save:$path";
		989
		990	return if $pl->{deny_save};
		991
		992	aio_mkdir playerdir $pl, 0770;
		993	$pl->{last_save} = $cf::RUNTIME;
		994
		995	$pl->save_pl ($path);
		996	Coro::cede;
		997	}
		998
		999	sub new($) {
		1000	my ($login) = @_;
		1001
		1002	my $self = create;
		1003
		1004	$self->ob->name ($login);
		1005	$self->{deny_save} = 1;
		1006
		1007	$cf::PLAYER{$login} = $self;
		1008
		1009	$self
		1010	}
		1011
		1012	=item $pl->quit_character
		1013
		1014	Nukes the player without looking back. If logged in, the connection will
		1015	be destroyed. May block for a long time.
		1016
		1017	=cut
		1018
		1019	sub quit_character {
		1020	my ($pl) = @_;
		1021
		1022	$pl->{deny_save} = 1;
		1023	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1024
		1025	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1026	$pl->deactivate;
		1027	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1028	$pl->ns->destroy if $pl->ns;
		1029
		1030	my $path = playerdir $pl;
		1031	my $temp = "$path~$cf::RUNTIME~deleting~";
		1032	aio_rename $path, $temp;
		1033	delete $cf::PLAYER{$pl->ob->name};
		1034	$pl->destroy;
		1035	IO::AIO::aio_rmtree $temp;
		1036	}
		1037
		1038	=item cf::player::list_logins
		1039
		1040	Returns am arrayref of all valid playernames in the system, can take a
		1041	while and may block, so not sync_job-capable, ever.
		1042
		1043	=cut
		1044
		1045	sub list_logins {
		1046	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1047	or return [];
		1048
		1049	my @logins;
		1050
		1051	for my $login (@$dirs) {
		1052	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1053	aio_read $fh, 0, 512, my $buf, 0 or next;
		1054	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1055
		1056	utf8::decode $login;
		1057	push @logins, $login;
		1058	}
		1059
		1060	\@logins
		1061	}
		1062
		1063	=item $player->maps
		1064
		1065	Returns an arrayref of map paths that are private for this
		1066	player. May block.
		1067
		1068	=cut
		1069
		1070	sub maps($) {
		1071	my ($pl) = @_;
		1072
		1073	my $files = aio_readdir playerdir $pl
		1074	or return;
		1075
		1076	my @paths;
		1077
		1078	for (@$files) {
		1079	utf8::decode $_;
		1080	next if /\.(?:pl|pst)$/;
		1081	next unless /^$PATH_SEP/o;
		1082
		1083	s/\.map$//;
		1084	push @paths, "~" . $pl->ob->name . "/" . $_;
		1085	}
		1086
		1087	\@paths
		1088	}
		1089
		1090	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1091
		1092	Sends an ext reply to the player.
		1093
		1094	=cut
		1095
		1096	sub ext_reply($$$%) {
		1097	my ($self, $id, %msg) = @_;
		1098
		1099	$msg{msgid} = $id;
		1100
		1101	$self->send ("ext " . cf::to_json \%msg);
		1102	}
		1103
		1104	package cf;
		1105
		1106	=back
		1107
		1108
		1109	=head3 cf::map
		1110
		1111	=over 4
		1112
		1113	=cut
		1114
		1115	package cf::map;
		1116
		1117	use Fcntl;
		1118	use Coro::AIO;
		1119
		1120	use overload
		1121	'""' => \&as_string,
		1122	fallback => 1;
		1123
		1124	our $MAX_RESET = 3600;
		1125	our $DEFAULT_RESET = 3000;
		1126
		1127	sub generate_random_map {
		1128	my ($self, $rmp) = @_;
		1129	# mit "rum" bekleckern, nicht
		1130	$self->_create_random_map (
		1131	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1132	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1133	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1134	$rmp->{exit_on_final_map},
		1135	$rmp->{xsize}, $rmp->{ysize},
		1136	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1137	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1138	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1139	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1140	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1141	(cf::region::find $rmp->{region}), $rmp->{custom}
		1142	)
		1143	}
		1144
		1145	=item cf::map->register ($regex, $prio)
		1146
		1147	Register a handler for the map path matching the given regex at the
		1148	givne priority (higher is better, built-in handlers have priority 0, the
		1149	default).
		1150
		1151	=cut
		1152
		1153	sub register {
		1154	my (undef, $regex, $prio) = @_;
		1155	my $pkg = caller;
		1156
		1157	no strict;
		1158	push @{"$pkg\::ISA"}, __PACKAGE__;
		1159
		1160	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1161	}
		1162
		1163	# also paths starting with '/'
		1164	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1165
		1166	sub thawer_merge {
		1167	my ($self, $merge) = @_;
		1168
		1169	# we have to keep some variables in memory intact
		1170	local $self->{path};
		1171	local $self->{load_path};
		1172	local $self->{deny_save};
		1173	local $self->{deny_reset};
		1174
		1175	$self->SUPER::thawer_merge ($merge);
		1176	}
		1177
		1178	sub normalise {
		1179	my ($path, $base) = @_;
		1180
		1181	# map plan:
		1182	#
		1183	# /! non-realised random map exit (special hack!)
		1184	# {... are special paths that are not being touched
		1185	# ?xxx/... are special absolute paths
		1186	# ?random/... random maps
		1187	# /... normal maps
		1188	# ~user/... per-player map of a specific user
		1189
		1190	$path =~ s/$PATH_SEP/\//go;
		1191
		1192	# treat it as relative path if it starts with
		1193	# something that looks reasonable
		1194	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1195	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1196
		1197	$base =~ s{[^/]+/?$}{};
		1198	$path = "$base/$path";
		1199	}
		1200
		1201	for ($path) {
		1202	redo if s{//}{/};
		1203	redo if s{/\.?/}{/};
		1204	redo if s{/[^/]+/\.\./}{/};
		1205	}
		1206
		1207	$path
		1208	}
		1209
		1210	sub new_from_path {
		1211	my (undef, $path, $base) = @_;
		1212
		1213	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1214
		1215	$path = normalise $path, $base;
		1216
		1217	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1218	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1219	my $self = bless cf::map::new, $pkg;
		1220	$self->{path} = $path; $self->path ($path);
		1221	$self->init; # pass $1 etc.
		1222	return $self;
		1223	}
		1224	}
		1225
		1226	Carp::carp "unable to resolve path '$path'.";
		1227	()
		1228	}
		1229
		1230	sub init {
		1231	my ($self) = @_;
		1232
		1233	$self
		1234	}
		1235
		1236	sub as_string {
		1237	my ($self) = @_;
		1238
		1239	"$self->{path}"
		1240	}
		1241
		1242	# the displayed name, this is a one way mapping
		1243	sub visible_name {
		1244	&as_string
		1245	}
		1246
		1247	# the original (read-only) location
		1248	sub load_path {
		1249	my ($self) = @_;
		1250
		1251	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1252	}
		1253
		1254	# the temporary/swap location
		1255	sub save_path {
		1256	my ($self) = @_;
		1257
		1258	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1259	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1260	}
		1261
		1262	# the unique path, undef == no special unique path
		1263	sub uniq_path {
		1264	my ($self) = @_;
		1265
		1266	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1267	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1268	}
		1269
		1270	# and all this just because we cannot iterate over
		1271	# all maps in C++...
		1272	sub change_all_map_light {
		1273	my ($change) = @_;
		1274
		1275	$_->change_map_light ($change)
		1276	for grep $_->outdoor, values %cf::MAP;
		1277	}
		1278
		1279	sub unlink_save {
		1280	my ($self) = @_;
		1281
		1282	utf8::encode (my $save = $self->save_path);
		1283	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1284	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1285	}
		1286
		1287	sub load_header_from($) {
		1288	my ($self, $path) = @_;
		1289
		1290	utf8::encode $path;
		1291	aio_open $path, O_RDONLY, 0
		1292	or return;
		1293
		1294	$self->_load_header ($path)
		1295	or return;
		1296
		1297	$self->{load_path} = $path;
		1298
		1299	1
		1300	}
		1301
		1302	sub load_header_orig {
		1303	my ($self) = @_;
		1304
		1305	$self->load_header_from ($self->load_path)
		1306	}
		1307
		1308	sub load_header_temp {
		1309	my ($self) = @_;
		1310
		1311	$self->load_header_from ($self->save_path)
		1312	}
		1313
		1314	sub prepare_temp {
		1315	my ($self) = @_;
		1316
		1317	$self->last_access ((delete $self->{last_access})
		1318	|| $cf::RUNTIME); #d#
		1319	# safety
		1320	$self->{instantiate_time} = $cf::RUNTIME
		1321	if $self->{instantiate_time} > $cf::RUNTIME;
		1322	}
		1323
		1324	sub prepare_orig {
		1325	my ($self) = @_;
		1326
		1327	$self->{load_original} = 1;
		1328	$self->{instantiate_time} = $cf::RUNTIME;
		1329	$self->last_access ($cf::RUNTIME);
		1330	$self->instantiate;
		1331	}
		1332
		1333	sub load_header {
		1334	my ($self) = @_;
		1335
		1336	if ($self->load_header_temp) {
		1337	$self->prepare_temp;
		1338	} else {
		1339	$self->load_header_orig
		1340	or return;
		1341	$self->prepare_orig;
		1342	}
		1343
		1344	1
		1345	}
		1346
		1347	sub find;
		1348	sub find {
		1349	my ($path, $origin) = @_;
		1350
		1351	$path = normalise $path, $origin && $origin->path;
		1352
		1353	cf::lock_wait "map_find:$path";
		1354
		1355	$cf::MAP{$path} || do {
		1356	my $guard = cf::lock_acquire "map_find:$path";
		1357	my $map = new_from_path cf::map $path
		1358	or return;
		1359
		1360	$map->{last_save} = $cf::RUNTIME;
		1361
		1362	$map->load_header
		1363	or return;
		1364
		1365	if ($map->should_reset) {
		1366	# doing this can freeze the server in a sync job, obviously
		1367	#$cf::WAIT_FOR_TICK->wait;
		1368	$map->reset;
		1369	undef $guard;
		1370	$map = find $path
		1371	or return;
		1372	}
		1373
		1374	$cf::MAP{$path} = $map
		1375	}
		1376	}
		1377
		1378	sub pre_load { }
		1379	sub post_load { }
		1380
		1381	sub load {
		1382	my ($self) = @_;
		1383
		1384	my $path = $self->{path};
		1385	my $guard = cf::lock_acquire "map_load:$path";
		1386
		1387	return if $self->in_memory != cf::MAP_SWAPPED;
		1388
		1389	$self->in_memory (cf::MAP_LOADING);
		1390
		1391	$self->alloc;
		1392
		1393	$self->pre_load;
		1394
		1395	$self->_load_objects ($self->{load_path}, 1)
		1396	or return;
		1397
		1398	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1399	if delete $self->{load_original};
		1400
		1401	if (my $uniq = $self->uniq_path) {
		1402	utf8::encode $uniq;
		1403	if (aio_open $uniq, O_RDONLY, 0) {
		1404	$self->clear_unique_items;
		1405	$self->_load_objects ($uniq, 0);
		1406	}
		1407	}
		1408
		1409	Coro::cede;
		1410
		1411	# now do the right thing for maps
		1412	$self->link_multipart_objects;
		1413
		1414	unless ($self->{deny_activate}) {
		1415	$self->decay_objects;
		1416	$self->fix_auto_apply;
		1417	$self->update_buttons;
		1418	Coro::cede;
		1419	$self->set_darkness_map;
		1420	$self->difficulty ($self->estimate_difficulty)
		1421	unless $self->difficulty;
		1422	Coro::cede;
		1423	$self->activate;
		1424	}
		1425
		1426	$self->post_load;
		1427
		1428	$self->in_memory (cf::MAP_IN_MEMORY);
		1429	}
		1430
		1431	sub customise_for {
721	my ($pl, $buf) = @_;	1432	my ($self, $ob) = @_;
722		1433
723	my $msg = eval { from_json $buf };	1434	return find "~" . $ob->name . "/" . $self->{path}
		1435	if $self->per_player;
724		1436
725	if (ref $msg) {	1437	$self
726	if (my $cb = $extcmd{$msg->{msgtype}}) {	1438	}
727	if (my %reply = $cb->[0]->($pl, $msg)) {	1439
728	$pl->ext_reply ($msg->{msgid}, %reply);	1440	# find and load all maps in the 3x3 area around a map
729	}	1441	sub load_diag {
		1442	my ($map) = @_;
		1443
		1444	my @diag; # diagonal neighbours
		1445
		1446	for (0 .. 3) {
		1447	my $neigh = $map->tile_path ($_)
		1448	or next;
		1449	$neigh = find $neigh, $map
		1450	or next;
		1451	$neigh->load;
		1452
		1453	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1454	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1455	}
		1456
		1457	for (@diag) {
		1458	my $neigh = find @$_
		1459	or next;
		1460	$neigh->load;
		1461	}
		1462	}
		1463
		1464	sub find_sync {
		1465	my ($path, $origin) = @_;
		1466
		1467	cf::sync_job { find $path, $origin }
		1468	}
		1469
		1470	sub do_load_sync {
		1471	my ($map) = @_;
		1472
		1473	cf::sync_job { $map->load };
		1474	}
		1475
		1476	our %MAP_PREFETCH;
		1477	our $MAP_PREFETCHER = undef;
		1478
		1479	sub find_async {
		1480	my ($path, $origin) = @_;
		1481
		1482	$path = normalise $path, $origin && $origin->{path};
		1483
		1484	if (my $map = $cf::MAP{$path}) {
		1485	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1486	}
		1487
		1488	undef $MAP_PREFETCH{$path};
		1489	$MAP_PREFETCHER ||= cf::async {
		1490	while (%MAP_PREFETCH) {
		1491	for my $path (keys %MAP_PREFETCH) {
		1492	my $map = find $path
		1493	or next;
		1494	$map->load;
		1495
		1496	delete $MAP_PREFETCH{$path};
730	}	1497	}
		1498	}
		1499	undef $MAP_PREFETCHER;
		1500	};
		1501	$MAP_PREFETCHER->prio (6);
		1502
		1503	()
		1504	}
		1505
		1506	sub save {
		1507	my ($self) = @_;
		1508
		1509	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1510
		1511	$self->{last_save} = $cf::RUNTIME;
		1512
		1513	return unless $self->dirty;
		1514
		1515	my $save = $self->save_path; utf8::encode $save;
		1516	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1517
		1518	$self->{load_path} = $save;
		1519
		1520	return if $self->{deny_save};
		1521
		1522	local $self->{last_access} = $self->last_access;#d#
		1523
		1524	cf::async {
		1525	$_->contr->save for $self->players;
		1526	};
		1527
		1528	if ($uniq) {
		1529	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1530	$self->_save_objects ($uniq, cf::IO_UNIQUES);
731	} else {	1531	} else {
732	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1532	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
733	}
734
735	cf::override;
736	},	1533	}
737	;	1534	}
738		1535
739	#############################################################################	1536	sub swap_out {
740	# load/save/clean perl data associated with a map
741
742	*cf::mapsupport::on_clean = sub {
743	my ($map) = @_;	1537	my ($self) = @_;
744		1538
745	my $path = $map->tmpname;	1539	# save first because save cedes
746	defined $path or return;	1540	$self->save;
747		1541
748	unlink "$path.pst";	1542	my $lock = cf::lock_acquire "map_data:" . $self->path;
749	};
750		1543
751	attach_to_maps prio => -10000, package => cf::mapsupport::;	1544	return if $self->players;
		1545	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1546	return if $self->{deny_save};
752		1547
753	#############################################################################	1548	$self->clear;
754	# load/save perl data associated with player->ob objects	1549	$self->in_memory (cf::MAP_SWAPPED);
755
756	sub all_objects(@) {
757	@_, map all_objects ($_->inv), @_
758	}	1550	}
759		1551
760	# TODO: compatibility cruft, remove when no longer needed	1552	sub reset_at {
761	attach_to_players	1553	my ($self) = @_;
762	on_load => sub {
763	my ($pl, $path) = @_;
764		1554
765	for my $o (all_objects $pl->ob) {	1555	# TODO: safety, remove and allow resettable per-player maps
766	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1556	return 1e99 if $self->isa ("ext::map_per_player");#d#
767	$o->set_ob_key_value ("_perl_data");	1557	return 1e99 if $self->{deny_reset};
768		1558
769	%$o = %{ Storable::thaw pack "H*", $value };	1559	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
770	}	1560	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
771	}	1561
		1562	$time + $to
		1563	}
		1564
		1565	sub should_reset {
		1566	my ($self) = @_;
		1567
		1568	$self->reset_at <= $cf::RUNTIME
		1569	}
		1570
		1571	sub reset {
		1572	my ($self) = @_;
		1573
		1574	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1575
		1576	return if $self->players;
		1577	return if $self->isa ("ext::map_per_player");#d#
		1578
		1579	warn "resetting map ", $self->path;#d#
		1580
		1581	delete $cf::MAP{$self->path};
		1582
		1583	$self->in_memory (cf::MAP_SWAPPED);
		1584	$self->clear;
		1585
		1586	$_->clear_links_to ($self) for values %cf::MAP;
		1587
		1588	$self->unlink_save;
		1589	$self->destroy;
		1590	}
		1591
		1592	my $nuke_counter = "aaaa";
		1593
		1594	sub nuke {
		1595	my ($self) = @_;
		1596
		1597	delete $cf::MAP{$self->path};
		1598
		1599	$self->unlink_save;
		1600
		1601	bless $self, "cf::map";
		1602	delete $self->{deny_reset};
		1603	$self->{deny_save} = 1;
		1604	$self->reset_timeout (1);
		1605	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1606
		1607	$cf::MAP{$self->path} = $self;
		1608
		1609	$self->reset; # polite request, might not happen
		1610	}
		1611
		1612	=item cf::map::unique_maps
		1613
		1614	Returns an arrayref of paths of all shared maps that have
		1615	instantiated unique items. May block.
		1616
		1617	=cut
		1618
		1619	sub unique_maps() {
		1620	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1621	or return;
		1622
		1623	my @paths;
		1624
		1625	for (@$files) {
		1626	utf8::decode $_;
		1627	next if /\.pst$/;
		1628	next unless /^$PATH_SEP/o;
		1629
		1630	s/\.map$//;
		1631	push @paths, $_;
772	},	1632	}
773	;
774		1633
775	#############################################################################	1634	\@paths
		1635	}
776		1636
777	=head2 CORE EXTENSIONS	1637	package cf;
778		1638
779	Functions and methods that extend core crossfire objects.	1639	=back
		1640
		1641	=head3 cf::object
		1642
		1643	=cut
		1644
		1645	package cf::object;
780		1646
781	=over 4	1647	=over 4
782		1648
783	=item cf::player::exists $login	1649	=item $ob->inv_recursive
784		1650
785	Returns true when the given account exists.	1651	Returns the inventory of the object _and_ their inventories, recursively.
786		1652
787	=cut	1653	=cut
788		1654
789	sub cf::player::exists($) {	1655	sub inv_recursive_;
790	cf::player::find $_[0]	1656	sub inv_recursive_ {
791	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1657	map { $_, inv_recursive_ $_->inv } @_
792	}	1658	}
		1659
		1660	sub inv_recursive {
		1661	inv_recursive_ inv $_[0]
		1662	}
		1663
		1664	package cf;
		1665
		1666	=back
		1667
		1668	=head3 cf::object::player
		1669
		1670	=over 4
793		1671
794	=item $player_object->reply ($npc, $msg[, $flags])	1672	=item $player_object->reply ($npc, $msg[, $flags])
795		1673
796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1674	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
797	can be C<undef>. Does the right thing when the player is currently in a	1675	can be C<undef>. Does the right thing when the player is currently in a
…		…
799		1677
800	=cut	1678	=cut
801		1679
802	# rough implementation of a future "reply" method that works	1680	# rough implementation of a future "reply" method that works
803	# with dialog boxes.	1681	# with dialog boxes.
		1682	#TODO: the first argument must go, split into a $npc->reply_to ( method
804	sub cf::object::player::reply($$$;$) {	1683	sub cf::object::player::reply($$$;$) {
805	my ($self, $npc, $msg, $flags) = @_;	1684	my ($self, $npc, $msg, $flags) = @_;
806		1685
807	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1686	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
808		1687
…		…
812	$msg = $npc->name . " says: $msg" if $npc;	1691	$msg = $npc->name . " says: $msg" if $npc;
813	$self->message ($msg, $flags);	1692	$self->message ($msg, $flags);
814	}	1693	}
815	}	1694	}
816		1695
817	=item $player->ext_reply ($msgid, $msgtype, %msg)
818
819	Sends an ext reply to the player.
820
821	=cut
822
823	sub cf::player::ext_reply($$$%) {
824	my ($self, $id, %msg) = @_;
825
826	$msg{msgid} = $id;
827
828	$self->send ("ext " . to_json \%msg);
829	}
830
831	=item $player_object->may ("access")	1696	=item $player_object->may ("access")
832		1697
833	Returns wether the given player is authorized to access resource "access"	1698	Returns wether the given player is authorized to access resource "access"
834	(e.g. "command_wizcast").	1699	(e.g. "command_wizcast").
835		1700
…		…
842	(ref $cf::CFG{"may_$access"}	1707	(ref $cf::CFG{"may_$access"}
843	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1708	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
844	: $cf::CFG{"may_$access"})	1709	: $cf::CFG{"may_$access"})
845	}	1710	}
846		1711
847	=cut	1712	=item $player_object->enter_link
848		1713
849	#############################################################################	1714	Freezes the player and moves him/her to a special map (C<{link}>).
		1715
		1716	The player should be reasonably safe there for short amounts of time. You
		1717	I<MUST> call C<leave_link> as soon as possible, though.
		1718
		1719	Will never block.
		1720
		1721	=item $player_object->leave_link ($map, $x, $y)
		1722
		1723	Moves the player out of the special C<{link}> map onto the specified
		1724	map. If the map is not valid (or omitted), the player will be moved back
		1725	to the location he/she was before the call to C<enter_link>, or, if that
		1726	fails, to the emergency map position.
		1727
		1728	Might block.
		1729
		1730	=cut
		1731
		1732	sub link_map {
		1733	unless ($LINK_MAP) {
		1734	$LINK_MAP = cf::map::find "{link}"
		1735	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1736	$LINK_MAP->load;
		1737	}
		1738
		1739	$LINK_MAP
		1740	}
		1741
		1742	sub cf::object::player::enter_link {
		1743	my ($self) = @_;
		1744
		1745	$self->deactivate_recursive;
		1746
		1747	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1748
		1749	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1750	if $self->map;
		1751
		1752	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1753	}
		1754
		1755	sub cf::object::player::leave_link {
		1756	my ($self, $map, $x, $y) = @_;
		1757
		1758	my $link_pos = delete $self->{_link_pos};
		1759
		1760	unless ($map) {
		1761	# restore original map position
		1762	($map, $x, $y) = @{ $link_pos || [] };
		1763	$map = cf::map::find $map;
		1764
		1765	unless ($map) {
		1766	($map, $x, $y) = @$EMERGENCY_POSITION;
		1767	$map = cf::map::find $map
		1768	or die "FATAL: cannot load emergency map\n";
		1769	}
		1770	}
		1771
		1772	($x, $y) = (-1, -1)
		1773	unless (defined $x) && (defined $y);
		1774
		1775	# use -1 or undef as default coordinates, not 0, 0
		1776	($x, $y) = ($map->enter_x, $map->enter_y)
		1777	if $x <=0 && $y <= 0;
		1778
		1779	$map->load;
		1780	$map->load_diag;
		1781
		1782	return unless $self->contr->active;
		1783	$self->activate_recursive;
		1784	$self->enter_map ($map, $x, $y);
		1785	}
		1786
		1787	cf::player->attach (
		1788	on_logout => sub {
		1789	my ($pl) = @_;
		1790
		1791	# abort map switching before logout
		1792	if ($pl->ob->{_link_pos}) {
		1793	cf::sync_job {
		1794	$pl->ob->leave_link
		1795	};
		1796	}
		1797	},
		1798	on_login => sub {
		1799	my ($pl) = @_;
		1800
		1801	# try to abort aborted map switching on player login :)
		1802	# should happen only on crashes
		1803	if ($pl->ob->{_link_pos}) {
		1804	$pl->ob->enter_link;
		1805	(async {
		1806	# we need this sleep as the login has a concurrent enter_exit running
		1807	# and this sleep increases chances of the player not ending up in scorn
		1808	$pl->ob->reply (undef,
		1809	"There was an internal problem at your last logout, "
		1810	. "the server will try to bring you to your intended destination in a second.",
		1811	cf::NDI_RED);
		1812	Coro::Timer::sleep 1;
		1813	$pl->ob->leave_link;
		1814	})->prio (2);
		1815	}
		1816	},
		1817	);
		1818
		1819	=item $player_object->goto ($path, $x, $y)
		1820
		1821	=cut
		1822
		1823	sub cf::object::player::goto {
		1824	my ($self, $path, $x, $y) = @_;
		1825
		1826	$self->enter_link;
		1827
		1828	(async {
		1829	my $map = cf::map::find $path;
		1830	$map = $map->customise_for ($self) if $map;
		1831
		1832	# warn "entering ", $map->path, " at ($x, $y)\n"
		1833	# if $map;
		1834
		1835	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1836
		1837	$self->leave_link ($map, $x, $y);
		1838	})->prio (1);
		1839	}
		1840
		1841	=item $player_object->enter_exit ($exit_object)
		1842
		1843	=cut
		1844
		1845	sub parse_random_map_params {
		1846	my ($spec) = @_;
		1847
		1848	my $rmp = { # defaults
		1849	xsize => (cf::rndm 15, 40),
		1850	ysize => (cf::rndm 15, 40),
		1851	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1852	#layout => string,
		1853	};
		1854
		1855	for (split /\n/, $spec) {
		1856	my ($k, $v) = split /\s+/, $_, 2;
		1857
		1858	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1859	}
		1860
		1861	$rmp
		1862	}
		1863
		1864	sub prepare_random_map {
		1865	my ($exit) = @_;
		1866
		1867	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1868
		1869	# all this does is basically replace the /! path by
		1870	# a new random map path (?random/...) with a seed
		1871	# that depends on the exit object
		1872
		1873	my $rmp = parse_random_map_params $exit->msg;
		1874
		1875	if ($exit->map) {
		1876	$rmp->{region} = $exit->map->region_name;
		1877	$rmp->{origin_map} = $exit->map->path;
		1878	$rmp->{origin_x} = $exit->x;
		1879	$rmp->{origin_y} = $exit->y;
		1880	}
		1881
		1882	$rmp->{random_seed} ||= $exit->random_seed;
		1883
		1884	my $data = cf::to_json $rmp;
		1885	my $md5 = Digest::MD5::md5_hex $data;
		1886	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1887
		1888	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1889	aio_write $fh, 0, (length $data), $data, 0;
		1890	undef $fh;
		1891	aio_rename "$meta~", $meta;
		1892
		1893	$exit->slaying ("?random/$md5");
		1894	$exit->msg (undef);
		1895	}
		1896	}
		1897
		1898	sub cf::object::player::enter_exit {
		1899	my ($self, $exit) = @_;
		1900
		1901	return unless $self->type == cf::PLAYER;
		1902
		1903	$self->enter_link;
		1904
		1905	(async {
		1906	$self->deactivate_recursive; # just to be sure
		1907	unless (eval {
		1908	prepare_random_map $exit
		1909	if $exit->slaying eq "/!";
		1910
		1911	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1912	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1913
		1914	1;
		1915	}) {
		1916	$self->message ("Something went wrong deep within the crossfire server. "
		1917	. "I'll try to bring you back to the map you were before. "
		1918	. "Please report this to the dungeon master!",
		1919	cf::NDI_UNIQUE | cf::NDI_RED);
		1920
		1921	warn "ERROR in enter_exit: $@";
		1922	$self->leave_link;
		1923	}
		1924	})->prio (1);
		1925	}
		1926
		1927	=head3 cf::client
		1928
		1929	=over 4
		1930
		1931	=item $client->send_drawinfo ($text, $flags)
		1932
		1933	Sends a drawinfo packet to the client. Circumvents output buffering so
		1934	should not be used under normal circumstances.
		1935
		1936	=cut
		1937
		1938	sub cf::client::send_drawinfo {
		1939	my ($self, $text, $flags) = @_;
		1940
		1941	utf8::encode $text;
		1942	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1943	}
		1944
		1945
		1946	=item $success = $client->query ($flags, "text", \&cb)
		1947
		1948	Queues a query to the client, calling the given callback with
		1949	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1950	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1951
		1952	Queries can fail, so check the return code. Or don't, as queries will become
		1953	reliable at some point in the future.
		1954
		1955	=cut
		1956
		1957	sub cf::client::query {
		1958	my ($self, $flags, $text, $cb) = @_;
		1959
		1960	return unless $self->state == ST_PLAYING
		1961	|| $self->state == ST_SETUP
		1962	|| $self->state == ST_CUSTOM;
		1963
		1964	$self->state (ST_CUSTOM);
		1965
		1966	utf8::encode $text;
		1967	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1968
		1969	$self->send_packet ($self->{query_queue}[0][0])
		1970	if @{ $self->{query_queue} } == 1;
		1971	}
		1972
		1973	cf::client->attach (
		1974	on_reply => sub {
		1975	my ($ns, $msg) = @_;
		1976
		1977	# this weird shuffling is so that direct followup queries
		1978	# get handled first
		1979	my $queue = delete $ns->{query_queue}
		1980	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1981
		1982	(shift @$queue)->[1]->($msg);
		1983
		1984	push @{ $ns->{query_queue} }, @$queue;
		1985
		1986	if (@{ $ns->{query_queue} } == @$queue) {
		1987	if (@$queue) {
		1988	$ns->send_packet ($ns->{query_queue}[0][0]);
		1989	} else {
		1990	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1991	}
		1992	}
		1993	},
		1994	);
		1995
		1996	=item $client->async (\&cb)
		1997
		1998	Create a new coroutine, running the specified callback. The coroutine will
		1999	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2000	or loss of connection).
		2001
		2002	=cut
		2003
		2004	sub cf::client::async {
		2005	my ($self, $cb) = @_;
		2006
		2007	my $coro = &Coro::async ($cb);
		2008
		2009	$coro->on_destroy (sub {
		2010	delete $self->{_coro}{$coro+0};
		2011	});
		2012
		2013	$self->{_coro}{$coro+0} = $coro;
		2014
		2015	$coro
		2016	}
		2017
		2018	cf::client->attach (
		2019	on_destroy => sub {
		2020	my ($ns) = @_;
		2021
		2022	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2023	},
		2024	);
		2025
		2026	=back
		2027
850		2028
851	=head2 SAFE SCRIPTING	2029	=head2 SAFE SCRIPTING
852		2030
853	Functions that provide a safe environment to compile and execute	2031	Functions that provide a safe environment to compile and execute
854	snippets of perl code without them endangering the safety of the server	2032	snippets of perl code without them endangering the safety of the server
…		…
869		2047
870	=pod	2048	=pod
871		2049
872	The following fucntions and emthods are available within a safe environment:	2050	The following fucntions and emthods are available within a safe environment:
873		2051
874	cf::object contr pay_amount pay_player	2052	cf::object contr pay_amount pay_player map
875	cf::object::player player	2053	cf::object::player player
876	cf::player peaceful	2054	cf::player peaceful
		2055	cf::map trigger
877		2056
878	=cut	2057	=cut
879		2058
880	for (	2059	for (
881	["cf::object" => qw(contr pay_amount pay_player)],	2060	["cf::object" => qw(contr pay_amount pay_player map)],
882	["cf::object::player" => qw(player)],	2061	["cf::object::player" => qw(player)],
883	["cf::player" => qw(peaceful)],	2062	["cf::player" => qw(peaceful)],
		2063	["cf::map" => qw(trigger)],
884	) {	2064	) {
885	no strict 'refs';	2065	no strict 'refs';
886	my ($pkg, @funs) = @$_;	2066	my ($pkg, @funs) = @$_;
887	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2067	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
888	for @funs;	2068	for @funs;
…		…
1004		2184
1005	{	2185	{
1006	my $path = cf::localdir . "/database.pst";	2186	my $path = cf::localdir . "/database.pst";
1007		2187
1008	sub db_load() {	2188	sub db_load() {
1009	warn "loading database $path\n";#d# remove later
1010	$DB = stat $path ? Storable::retrieve $path : { };	2189	$DB = stat $path ? Storable::retrieve $path : { };
1011	}	2190	}
1012		2191
1013	my $pid;	2192	my $pid;
1014		2193
1015	sub db_save() {	2194	sub db_save() {
1016	warn "saving database $path\n";#d# remove later
1017	waitpid $pid, 0 if $pid;	2195	waitpid $pid, 0 if $pid;
1018	if (0 == ($pid = fork)) {	2196	if (0 == ($pid = fork)) {
1019	$DB->{_meta}{version} = 1;	2197	$DB->{_meta}{version} = 1;
1020	Storable::nstore $DB, "$path~";	2198	Storable::nstore $DB, "$path~";
1021	rename "$path~", $path;	2199	rename "$path~", $path;
…		…
1028	sub db_sync() {	2206	sub db_sync() {
1029	db_save if $dirty;	2207	db_save if $dirty;
1030	undef $dirty;	2208	undef $dirty;
1031	}	2209	}
1032		2210
1033	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2211	my $idle = Event->idle (
1034	db_sync;	2212	reentrant => 0,
		2213	min => 10,
		2214	max => 20,
		2215	repeat => 0,
		2216	data => WF_AUTOCANCEL,
		2217	cb => \&db_sync,
1035	});	2218	);
1036		2219
1037	sub db_dirty() {	2220	sub db_dirty() {
1038	$dirty = 1;	2221	$dirty = 1;
1039	$idle->start;	2222	$idle->start;
1040	}	2223	}
…		…
1052	$DB->{$_[0]} = $_[1];	2235	$DB->{$_[0]} = $_[1];
1053	}	2236	}
1054	db_dirty;	2237	db_dirty;
1055	}	2238	}
1056		2239
1057	attach_global	2240	cf::global->attach (
1058	prio => 10000,	2241	prio => 10000,
1059	on_cleanup => sub {	2242	on_cleanup => sub {
1060	db_sync;	2243	db_sync;
1061	},	2244	},
1062	;	2245	);
1063	}	2246	}
1064		2247
1065	#############################################################################	2248	#############################################################################
1066	# the server's main()	2249	# the server's main()
1067		2250
…		…
1069	open my $fh, "<:utf8", cf::confdir . "/config"	2252	open my $fh, "<:utf8", cf::confdir . "/config"
1070	or return;	2253	or return;
1071		2254
1072	local $/;	2255	local $/;
1073	*CFG = YAML::Syck::Load <$fh>;	2256	*CFG = YAML::Syck::Load <$fh>;
		2257
		2258	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2259
		2260	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2261	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2262
		2263	if (exists $CFG{mlockall}) {
		2264	eval {
		2265	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2266	and die "WARNING: m(un)lockall failed: $!\n";
		2267	};
		2268	warn $@ if $@;
		2269	}
1074	}	2270	}
1075		2271
1076	sub main {	2272	sub main {
		2273	# we must not ever block the main coroutine
		2274	local $Coro::idle = sub {
		2275	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2276	(async {
		2277	Event::one_event;
		2278	})->prio (Coro::PRIO_MAX);
		2279	};
		2280
1077	cfg_load;	2281	cfg_load;
1078	db_load;	2282	db_load;
1079	load_extensions;	2283	load_extensions;
		2284
		2285	$TICK_WATCHER->start;
1080	Event::loop;	2286	Event::loop;
1081	}	2287	}
1082		2288
1083	#############################################################################	2289	#############################################################################
1084	# initialisation	2290	# initialisation and cleanup
1085		2291
		2292	# install some emergency cleanup handlers
		2293	BEGIN {
		2294	for my $signal (qw(INT HUP TERM)) {
		2295	Event->signal (
		2296	reentrant => 0,
		2297	data => WF_AUTOCANCEL,
		2298	signal => $signal,
		2299	prio => 0,
		2300	cb => sub {
		2301	cf::cleanup "SIG$signal";
		2302	},
		2303	);
		2304	}
		2305	}
		2306
		2307	sub emergency_save() {
		2308	my $freeze_guard = cf::freeze_mainloop;
		2309
		2310	warn "enter emergency perl save\n";
		2311
		2312	cf::sync_job {
		2313	# use a peculiar iteration method to avoid tripping on perl
		2314	# refcount bugs in for. also avoids problems with players
		2315	# and maps saved/destroyed asynchronously.
		2316	warn "begin emergency player save\n";
		2317	for my $login (keys %cf::PLAYER) {
		2318	my $pl = $cf::PLAYER{$login} or next;
		2319	$pl->valid or next;
		2320	$pl->save;
		2321	}
		2322	warn "end emergency player save\n";
		2323
		2324	warn "begin emergency map save\n";
		2325	for my $path (keys %cf::MAP) {
		2326	my $map = $cf::MAP{$path} or next;
		2327	$map->valid or next;
		2328	$map->save;
		2329	}
		2330	warn "end emergency map save\n";
		2331	};
		2332
		2333	warn "leave emergency perl save\n";
		2334	}
		2335
1086	sub _perl_reload(&) {	2336	sub reload() {
1087	my ($msg) = @_;	2337	# can/must only be called in main
		2338	if ($Coro::current != $Coro::main) {
		2339	warn "can only reload from main coroutine";
		2340	return;
		2341	}
1088		2342
1089	$msg->("reloading...");	2343	warn "reloading...";
		2344
		2345	warn "cancelling server ticker";
		2346	$TICK_WATCHER->cancel;
		2347
		2348	cf::emergency_save;
1090		2349
1091	eval {	2350	eval {
1092	# cancel all watchers	2351	# if anything goes wrong in here, we should simply crash as we already saved
		2352
		2353	warn "syncing database to disk";
		2354	cf::db_sync;
		2355
		2356	warn "cancelling all WF_AUTOCANCEL watchers";
1093	$_->cancel for Event::all_watchers;	2357	for (Event::all_watchers) {
		2358	$_->cancel if $_->data & WF_AUTOCANCEL;
		2359	}
1094		2360
1095	# unload all extensions	2361	warn "flushing outstanding aio requests";
1096	for (@exts) {	2362	for (;;) {
1097	$msg->("unloading <$_>");	2363	IO::AIO::flush;
1098	unload_extension $_;	2364	Coro::cede;
		2365	last unless IO::AIO::nreqs;
		2366	warn "iterate...";
		2367	}
		2368
		2369	warn "cancelling all extension coros";
		2370	$_->cancel for values %EXT_CORO;
		2371	%EXT_CORO = ();
		2372
		2373	warn "removing commands";
		2374	%COMMAND = ();
		2375
		2376	warn "removing ext commands";
		2377	%EXTCMD = ();
		2378
		2379	warn "unloading/nuking all extensions";
		2380	for my $pkg (@EXTS) {
		2381	warn "... unloading $pkg";
		2382
		2383	if (my $cb = $pkg->can ("unload")) {
		2384	eval {
		2385	$cb->($pkg);
		2386	1
		2387	} or warn "$pkg unloaded, but with errors: $@";
1099	}	2388	}
1100		2389
		2390	warn "... nuking $pkg";
		2391	Symbol::delete_package $pkg;
		2392	}
		2393
1101	# unload all modules loaded from $LIBDIR	2394	warn "unloading all perl modules loaded from $LIBDIR";
1102	while (my ($k, $v) = each %INC) {	2395	while (my ($k, $v) = each %INC) {
1103	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2396	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1104		2397
1105	$msg->("removing <$k>");	2398	warn "... unloading $k";
1106	delete $INC{$k};	2399	delete $INC{$k};
1107		2400
1108	$k =~ s/\.pm$//;	2401	$k =~ s/\.pm$//;
1109	$k =~ s/\//::/g;	2402	$k =~ s/\//::/g;
1110		2403
…		…
1113	}	2406	}
1114		2407
1115	Symbol::delete_package $k;	2408	Symbol::delete_package $k;
1116	}	2409	}
1117		2410
1118	# sync database to disk
1119	cf::db_sync;
1120
1121	# get rid of safe::, as good as possible	2411	warn "getting rid of safe::, as good as possible";
1122	Symbol::delete_package "safe::$_"	2412	Symbol::delete_package "safe::$_"
1123	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2413	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1124		2414
1125	# remove register_script_function callbacks
1126	# TODO
1127
1128	# unload cf.pm "a bit"	2415	warn "unloading cf.pm \"a bit\"";
1129	delete $INC{"cf.pm"};	2416	delete $INC{"cf.pm"};
1130		2417
1131	# don't, removes xs symbols, too,	2418	# don't, removes xs symbols, too,
1132	# and global variables created in xs	2419	# and global variables created in xs
1133	#Symbol::delete_package __PACKAGE__;	2420	#Symbol::delete_package __PACKAGE__;
1134		2421
1135	# reload cf.pm	2422	warn "unload completed, starting to reload now";
		2423
1136	$msg->("reloading cf.pm");	2424	warn "reloading cf.pm";
1137	require cf;	2425	require cf;
		2426	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1138		2427
1139	# load config and database again	2428	warn "loading config and database again";
1140	cf::cfg_load;	2429	cf::cfg_load;
1141	cf::db_load;	2430	cf::db_load;
1142		2431
1143	# load extensions	2432	warn "loading extensions";
1144	$msg->("load extensions");
1145	cf::load_extensions;	2433	cf::load_extensions;
1146		2434
1147	# reattach attachments to objects	2435	warn "reattaching attachments to objects/players";
1148	$msg->("reattach");
1149	_global_reattach;	2436	_global_reattach;
		2437	warn "reattaching attachments to maps";
		2438	reattach $_ for values %MAP;
		2439
		2440	warn "restarting server ticker";
		2441
		2442	$TICK_WATCHER->start;
1150	};	2443	};
1151	$msg->($@) if $@;
1152		2444
1153	$msg->("reloaded");	2445	if ($@) {
		2446	warn $@;
		2447	warn "error while reloading, exiting.";
		2448	exit 1;
		2449	}
		2450
		2451	warn "reloaded";
1154	};	2452	};
1155		2453
1156	sub perl_reload() {	2454	our $RELOAD_WATCHER; # used only during reload
1157	_perl_reload {
1158	warn $_[0];
1159	print "$_[0]\n";
1160	};
1161	}
1162		2455
1163	register_command "perl-reload", 0, sub {	2456	register_command "reload" => sub {
1164	my ($who, $arg) = @_;	2457	my ($who, $arg) = @_;
1165		2458
1166	if ($who->flag (FLAG_WIZ)) {	2459	if ($who->flag (FLAG_WIZ)) {
1167	_perl_reload {	2460	$who->message ("reloading server.");
1168	warn $_[0];	2461
1169	$who->message ($_[0]);	2462	# doing reload synchronously and two reloads happen back-to-back,
		2463	# coro crashes during coro_state_free->destroy here.
		2464
		2465	$RELOAD_WATCHER ||= Event->timer (
		2466	reentrant => 0,
		2467	after => 0,
		2468	data => WF_AUTOCANCEL,
		2469	cb => sub {
		2470	reload;
		2471	undef $RELOAD_WATCHER;
		2472	},
1170	};	2473	);
1171	}	2474	}
1172	};	2475	};
1173		2476
1174	register "<global>", __PACKAGE__;
1175
1176	unshift @INC, $LIBDIR;	2477	unshift @INC, $LIBDIR;
1177		2478
		2479	my $bug_warning = 0;
		2480
1178	$TICK_WATCHER = Event->timer (	2481	$TICK_WATCHER = Event->timer (
		2482	reentrant => 0,
		2483	parked => 1,
1179	prio => 1,	2484	prio => 0,
1180	async => 1,
1181	at => $NEXT_TICK || 1,	2485	at => $NEXT_TICK || $TICK,
		2486	data => WF_AUTOCANCEL,
1182	cb => sub {	2487	cb => sub {
		2488	if ($Coro::current != $Coro::main) {
		2489	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2490	unless ++$bug_warning > 10;
		2491	return;
		2492	}
		2493
		2494	$NOW = Event::time;
		2495
1183	cf::server_tick; # one server iteration	2496	cf::server_tick; # one server iteration
1184		2497	$RUNTIME += $TICK;
1185	my $NOW = Event::time;
1186	$NEXT_TICK += $TICK;	2498	$NEXT_TICK += $TICK;
1187		2499
		2500	$WAIT_FOR_TICK->broadcast;
		2501	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2502
		2503	Event::sweep;
		2504	Coro::cede_notself;
		2505
		2506	# my $AFTER = Event::time;
		2507	# warn $AFTER - $NOW;#d#
		2508
1188	# if we are delayed by four ticks or more, skip them all	2509	# if we are delayed by four ticks or more, skip them all
1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2510	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1190		2511
1191	$TICK_WATCHER->at ($NEXT_TICK);	2512	$TICK_WATCHER->at ($NEXT_TICK);
1192	$TICK_WATCHER->start;	2513	$TICK_WATCHER->start;
1193	},	2514	},
1194	);	2515	);
1195		2516
1196	IO::AIO::max_poll_time $TICK * 0.2;	2517	IO::AIO::max_poll_time $TICK * 0.1;
1197		2518
		2519	undef $Coro::AIO::WATCHER;
		2520	$AIO_POLL_WATCHER = Event->io (
		2521	reentrant => 0,
1198	Event->io (fd => IO::AIO::poll_fileno,	2522	fd => IO::AIO::poll_fileno,
1199	poll => 'r',	2523	poll => 'r',
1200	prio => 5,	2524	prio => 6,
		2525	data => WF_AUTOCANCEL,
1201	cb => \&IO::AIO::poll_cb);	2526	cb => \&IO::AIO::poll_cb,
		2527	);
		2528
		2529	$WRITE_RUNTIME_WATCHER = Event->timer (
		2530	reentrant => 0,
		2531	data => WF_AUTOCANCEL,
		2532	after => 1,
		2533	interval => 10,
		2534	prio => 6, # keep it lowest so it acts like a watchdog
		2535	cb => Coro::unblock_sub {
		2536	write_runtime
		2537	or warn "ERROR: unable to write runtime file: $!";
		2538	},
		2539	);
		2540
		2541	END { cf::emergency_save }
1202		2542
1203	1	2543	1
1204		2544

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