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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.84 by root, Mon Dec 11 02:54:57 2006 UTC vs.
Revision 1.188 by root, Sat Jan 20 23:30:16 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; $UPTIME ||= time;	56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
		58
		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;
34		87
35	#############################################################################	88	#############################################################################
36		89
37	=head2 GLOBAL VARIABLES	90	=head2 GLOBAL VARIABLES
38		91
39	=over 4	92	=over 4
40		93
41	=item $cf::UPTIME	94	=item $cf::UPTIME
42		95
43	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.
44		102
45	=item $cf::LIBDIR	103	=item $cf::LIBDIR
46		104
47	The perl library directory, where extensions and cf-specific modules can	105	The perl library directory, where extensions and cf-specific modules can
48	be found. It will be added to C<@INC> automatically.	106	be found. It will be added to C<@INC> automatically.
49		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
50	=item $cf::TICK	112	=item $cf::TICK
51		113
52	The interval between server ticks, in seconds.	114	The interval between server ticks, in seconds.
53		115
54	=item %cf::CFG	116	=item %cf::CFG
55		117
56	Configuration for the server, loaded from C</etc/crossfire/config>, or	118	Configuration for the server, loaded from C</etc/crossfire/config>, or
57	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.
58		127
59	=back	128	=back
60		129
61	=cut	130	=cut
62		131
63	BEGIN {	132	BEGIN {
64	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
65	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
66	$msg .= "\n"	137	$msg .= "\n"
67	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
68		139
69	print STDERR "cfperl: $msg";
70	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
71	};	141	};
72	}	142	}
73		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';
74	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
75		150
76	# 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
77	# within the Safe compartment.	152	# within the Safe compartment.
78	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
79	no strict 'refs';	160	no strict 'refs';
80	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
81	}	162	}
82		163
83	$Event::DIED = sub {	164	$Event::DIED = sub {
84	warn "error in event callback: @_";	165	warn "error in event callback: @_";
85	};	166	};
86		167
87	my %ext_pkg;
88	my @exts;
89	my @hook;
90	my %command;
91	my %extcmd;
92
93	=head2 UTILITY FUNCTIONS	168	=head2 UTILITY FUNCTIONS
94		169
95	=over 4	170	=over 4
96		171
		172	=item dumpval $ref
		173
97	=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	}
98		194
99	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
100		196
101	=item $ref = cf::from_json $json	197	=item $ref = cf::from_json $json
102		198
…		…
118	sub to_json($) {	214	sub to_json($) {
119	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
120	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
121	}	217	}
122		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
123	=back	373	=back
124		374
125	=cut	375	=cut
126		376
127	#############################################################################	377	#############################################################################
128		378
129	=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+).
130		388
131	=over 4	389	=over 4
132		390
133	=item $object->attach ($attachment, key => $value...)
134
135	=item $object->detach ($attachment)
136
137	Attach/detach a pre-registered attachment to an object.
138
139	=item $player->attach ($attachment, key => $value...)
140
141	=item $player->detach ($attachment)
142
143	Attach/detach a pre-registered attachment to a player.
144
145	=item $map->attach ($attachment, key => $value...)	391	=item $attachable->attach ($attachment, key => $value...)
146		392
147	=item $map->detach ($attachment)	393	=item $attachable->detach ($attachment)
148		394
149	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.
150		397
151	=item $bool = $object->attached ($name)	398	Example, attach a minesweeper attachment to the given object, making it a
		399	10x10 minesweeper game:
152		400
153	=item $bool = $player->attached ($name)	401	$obj->attach (minesweeper => width => 10, height => 10);
154		402
155	=item $bool = $map->attached ($name)	403	=item $bool = $attachable->attached ($name)
156		404
157	Checks wether the named attachment is currently attached to the object.	405	Checks wether the named attachment is currently attached to the object.
158		406
159	=item cf::attach_global ...	407	=item cf::CLASS->attach ...
160		408
161	Attach handlers for global events.	409	=item cf::CLASS->detach ...
162		410
163	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
164	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:
165		445
166	=over 4	446	=over 4
167		447
168	=item prio => $number	448	=item prio => $number
169		449
…		…
171	by another C<prio> setting). Lower priority handlers get executed	451	by another C<prio> setting). Lower priority handlers get executed
172	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
173	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
174	unless you know what you are doing.	454	unless you know what you are doing.
175		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
176	=item on_I<event> => \&cb	462	=item on_I<event> => \&cb
177		463
178	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
179	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
180	handlers are recognised generally depends on the type of object these	466	handlers are recognised generally depends on the type of object these
…		…
189	package and register them. Only handlers for eevents supported by the	475	package and register them. Only handlers for eevents supported by the
190	object/class are recognised.	476	object/class are recognised.
191		477
192	=back	478	=back
193		479
194	=item cf::attach_to_type $object_type, $subtype, ...	480	Example, define an attachment called "sockpuppet" that calls the given
		481	event handler when a monster attacks:
195		482
196	Attach handlers for a specific object type (e.g. TRANSPORT) and	483	cf::object::attachment sockpuppet =>
197	subtype. If C<$subtype> is zero or undef, matches all objects of the given	484	on_skill_attack => sub {
198	type.	485	my ($self, $victim) = @_;
199		486	...
200	=item cf::attach_to_objects ...
201
202	Attach handlers to all objects. Do not use this except for debugging or
203	very rare events, as handlers are (obviously) called for I<all> objects in
204	the game.
205
206	=item cf::attach_to_players ...
207
208	Attach handlers to all players.
209
210	=item cf::attach_to_maps ...
211
212	Attach handlers to all maps.
213
214	=item cf:register_attachment $name, ...
215
216	Register an attachment by name through which objects can refer to this
217	attachment.
218
219	=item cf:register_player_attachment $name, ...
220
221	Register an attachment by name through which players can refer to this
222	attachment.
223
224	=item cf:register_map_attachment $name, ...
225
226	Register an attachment by name through which maps can refer to this
227	attachment.
228
229	=cut
230
231	# the following variables are defined in .xs and must not be re-created
232	our @CB_GLOBAL = (); # registry for all global events
233	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
234	our @CB_PLAYER = ();
235	our @CB_TYPE = (); # registry for type (cf-object class) based events
236	our @CB_MAP = ();
237
238	my %attachment;
239
240	sub _attach_cb($\%$$$) {
241	my ($registry, $undo, $event, $prio, $cb) = @_;
242
243	use sort 'stable';
244
245	$cb = [$prio, $cb];
246
247	@{$registry->[$event]} = sort
248	{ $a->[0] cmp $b->[0] }
249	@{$registry->[$event] || []}, $cb;
250
251	push @{$undo->{cb}}, [$event, $cb];
252	}
253
254	# attach handles attaching event callbacks
255	# the only thing the caller has to do is pass the correct
256	# registry (== where the callback attaches to).
257	sub _attach(\@$@) {
258	my ($registry, $klass, @arg) = @_;
259
260	my $prio = 0;
261
262	my %undo = (
263	registry => $registry,
264	cb => [],
265	);
266
267	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
268
269	while (@arg) {
270	my $type = shift @arg;
271
272	if ($type eq "prio") {
273	$prio = shift @arg;
274
275	} elsif ($type eq "package") {
276	my $pkg = shift @arg;
277
278	while (my ($name, $id) = each %cb_id) {
279	if (my $cb = $pkg->can ($name)) {
280	_attach_cb $registry, %undo, $id, $prio, $cb;
281	}
282	}	487	}
283
284	} elsif (exists $cb_id{$type}) {
285	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
286
287	} elsif (ref $type) {
288	warn "attaching objects not supported, ignoring.\n";
289
290	} else {
291	shift @arg;
292	warn "attach argument '$type' not supported, ignoring.\n";
293	}
294	}
295
296	\%undo
297	}
298
299	sub _attach_attachment {
300	my ($obj, $name, %arg) = @_;
301
302	return if exists $obj->{_attachment}{$name};
303
304	my $res;
305
306	if (my $attach = $attachment{$name}) {
307	my $registry = $obj->registry;
308
309	for (@$attach) {
310	my ($klass, @attach) = @$_;
311	$res = _attach @$registry, $klass, @attach;
312	}
313
314	$obj->{$name} = \%arg;
315	} else {
316	warn "object uses attachment '$name' that is not available, postponing.\n";
317	}
318
319	$obj->{_attachment}{$name} = undef;
320
321	$res->{attachment} = $name;
322	$res
323	}
324
325	*cf::object::attach =
326	*cf::player::attach =
327	*cf::map::attach = sub {
328	my ($obj, $name, %arg) = @_;
329
330	_attach_attachment $obj, $name, %arg;
331	};
332
333	# all those should be optimised
334	*cf::object::detach =
335	*cf::player::detach =
336	*cf::map::detach = sub {
337	my ($obj, $name) = @_;
338
339	delete $obj->{_attachment}{$name};
340	reattach ($obj);
341	};
342
343	*cf::object::attached =
344	*cf::player::attached =
345	*cf::map::attached = sub {
346	my ($obj, $name) = @_;
347
348	exists $obj->{_attachment}{$name}
349	};
350
351	sub attach_global {
352	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
353	}
354
355	sub attach_to_type {
356	my $type = shift;
357	my $subtype = shift;
358
359	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
360	}
361
362	sub attach_to_objects {
363	_attach @CB_OBJECT, KLASS_OBJECT, @_
364	}
365
366	sub attach_to_players {
367	_attach @CB_PLAYER, KLASS_PLAYER, @_
368	}
369
370	sub attach_to_maps {
371	_attach @CB_MAP, KLASS_MAP, @_
372	}
373
374	sub register_attachment {
375	my $name = shift;
376
377	$attachment{$name} = [[KLASS_OBJECT, @_]];
378	}
379
380	sub register_player_attachment {
381	my $name = shift;
382
383	$attachment{$name} = [[KLASS_PLAYER, @_]];
384	}
385
386	sub register_map_attachment {
387	my $name = shift;
388
389	$attachment{$name} = [[KLASS_MAP, @_]];
390	}
391
392	our $override;
393	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
394
395	sub override {
396	$override = 1;
397	@invoke_results = ();
398	}
399
400	sub do_invoke {
401	my $event = shift;
402	my $callbacks = shift;
403
404	@invoke_results = ();
405
406	local $override;
407
408	for (@$callbacks) {
409	eval { &{$_->[1]} };
410
411	if ($@) {
412	warn "$@";
413	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
414	override;
415	}
416
417	return 1 if $override;
418	}
419
420	0	488	}
421	}
422		489
423	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	490	=item $attachable->valid
424
425	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
426
427	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
428
429	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
430
431	Generate a global/object/player/map-specific event with the given arguments.
432
433	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
434	removed in future versions), and there is no public API to access override
435	results (if you must, access C<@cf::invoke_results> directly).
436
437	=back
438
439	=cut
440
441	#############################################################################
442
443	=head2 METHODS VALID FOR ALL CORE OBJECTS
444
445	=over 4
446
447	=item $object->valid, $player->valid, $map->valid
448		491
449	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
450	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
451	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
452	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
453	exception.	496	exception.
454		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
455	=back	687	=back
456		688
457	=cut	689	=cut
458
459	*cf::object::valid =
460	*cf::player::valid =
461	*cf::map::valid = \&cf::_valid;
462		690
463	#############################################################################	691	#############################################################################
464	# object support	692	# object support
465		693
466	sub instantiate {
467	my ($obj, $data) = @_;
468
469	$data = from_json $data;
470
471	for (@$data) {
472	my ($name, $args) = @$_;
473
474	$obj->attach ($name, %{$args || {} });
475	}
476	}
477
478	# basically do the same as instantiate, without calling instantiate
479	sub reattach {	694	sub reattach {
		695	# basically do the same as instantiate, without calling instantiate
480	my ($obj) = @_;	696	my ($obj) = @_;
		697
		698	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		699
481	my $registry = $obj->registry;	700	my $registry = $obj->registry;
482		701
483	@$registry = ();	702	@$registry = ();
484		703
485	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
486		705
487	for my $name (keys %{ $obj->{_attachment} || {} }) {	706	for my $name (keys %{ $obj->{_attachment} || {} }) {
488	if (my $attach = $attachment{$name}) {	707	if (my $attach = $attachment{$name}) {
489	for (@$attach) {	708	for (@$attach) {
490	my ($klass, @attach) = @$_;	709	my ($klass, @attach) = @$_;
491	_attach @$registry, $klass, @attach;	710	_attach $registry, $klass, @attach;
492	}	711	}
493	} else {	712	} else {
494	warn "object uses attachment '$name' that is not available, postponing.\n";	713	warn "object uses attachment '$name' that is not available, postponing.\n";
495	}	714	}
496	}	715	}
497	}	716	}
498		717
499	sub object_freezer_save {	718	cf::attachable->attach (
500	my ($filename, $rdata, $objs) = @_;
501
502	if (length $$rdata) {
503	warn sprintf "saving %s (%d,%d)\n",
504	$filename, length $$rdata, scalar @$objs;
505
506	if (open my $fh, ">:raw", "$filename~") {
507	chmod SAVE_MODE, $fh;
508	syswrite $fh, $$rdata;
509	close $fh;
510
511	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
514	close $fh;
515	rename "$filename.pst~", "$filename.pst";
516	} else {
517	unlink "$filename.pst";
518	}
519
520	rename "$filename~", $filename;
521	} else {
522	warn "FATAL: $filename~: $!\n";
523	}
524	} else {
525	unlink $filename;
526	unlink "$filename.pst";
527	}
528	}
529
530	sub object_freezer_as_string {
531	my ($rdata, $objs) = @_;
532
533	use Data::Dumper;
534
535	$$rdata . Dumper $objs
536	}
537
538	sub object_thawer_load {
539	my ($filename) = @_;
540
541	local $/;
542
543	my $av;
544
545	#TODO: use sysread etc.
546	if (open my $data, "<:raw:perlio", $filename) {
547	$data = <$data>;
548	if (open my $pst, "<:raw:perlio", "$filename.pst") {
549	$av = eval { (Storable::thaw <$pst>)->{objs} };
550	}
551	return ($data, $av);
552	}
553
554	()
555	}
556
557	attach_to_objects
558	prio => -1000000,	719	prio => -1000000,
		720	on_instantiate => sub {
		721	my ($obj, $data) = @_;
		722
		723	$data = from_json $data;
		724
		725	for (@$data) {
		726	my ($name, $args) = @$_;
		727
		728	$obj->attach ($name, %{$args || {} });
		729	}
		730	},
		731	on_reattach => \&reattach,
559	on_clone => sub {	732	on_clone => sub {
560	my ($src, $dst) = @_;	733	my ($src, $dst) = @_;
561		734
562	@{$dst->registry} = @{$src->registry};	735	@{$dst->registry} = @{$src->registry};
563		736
564	%$dst = %$src;	737	%$dst = %$src;
565		738
566	%{$dst->{_attachment}} = %{$src->{_attachment}}	739	%{$dst->{_attachment}} = %{$src->{_attachment}}
567	if exists $src->{_attachment};	740	if exists $src->{_attachment};
568	},	741	},
569	;	742	);
		743
		744	sub object_freezer_save {
		745	my ($filename, $rdata, $objs) = @_;
		746
		747	sync_job {
		748	if (length $$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	}
570		808
571	#############################################################################	809	#############################################################################
572	# old plug-in events	810	# command handling &c
573		811
574	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
575	my $extension = shift;
576	my $event_code = shift;
577		813
578	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
579	or return;	815	$name.
580		816
581	&$cb	817	=cut
582	}
583
584	sub inject_global_event {
585	my $event = shift;
586
587	my $cb = $hook[$event]
588	or return;
589
590	List::Util::max map &$_, values %$cb
591	}
592
593	sub inject_command {
594	my ($name, $obj, $params) = @_;
595
596	for my $cmd (@{ $command{$name} }) {
597	$cmd->[1]->($obj, $params);
598	}
599
600	-1
601	}
602		818
603	sub register_command {	819	sub register_command {
604	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
605		821
606	my $caller = caller;	822	my $caller = caller;
607	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
608		824
609	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
610	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
611	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
612		836
613	sub register_extcmd {	837	sub register_extcmd {
614	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
615		839
616	my $caller = caller;	840	$EXTCMD{$name} = $cb;
617	#warn "registering extcmd '$name' to '$caller'";
618
619	$extcmd{$name} = [$cb, $caller];
620	}	841	}
621		842
622	sub register {	843	cf::player->attach (
623	my ($base, $pkg) = @_;	844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
624		846
625	#TODO	847	my $cb = $COMMAND{$name}
626	}	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	);
627		874
628	sub load_extension {	875	sub load_extension {
629	my ($path) = @_;	876	my ($path) = @_;
630		877
631	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
632	my $base = $1;	879	my $base = $1;
633	my $pkg = $1;	880	my $pkg = $1;
634	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
635	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
636		883
637	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
638		885
639	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
640	or die "$path: $!";	887	or die "$path: $!";
641		888
642	my $source =	889	my $source =
643	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
644	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
645	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
646	. "\n};\n1";	893	. "\n};\n1";
647		894
648	eval $source	895	unless (eval $source) {
649	or die $@ ? "$path: $@\n"	896	my $msg = $@ ? "$path: $@\n"
650	: "extension disabled.\n";	897	: "extension disabled.\n";
651		898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
652	push @exts, $pkg;	899	warn $@;
653	$ext_pkg{$base} = $pkg;	900	warn "mandatory extension failed to load, exiting.\n";
654		901	exit 1;
655	# no strict 'refs';	902	}
656	# @{"$pkg\::ISA"} = ext::;	903	die $@;
657
658	register $base, $pkg;
659	}
660
661	sub unload_extension {
662	my ($pkg) = @_;
663
664	warn "removing extension $pkg\n";
665
666	# remove hooks
667	#TODO
668	# for my $idx (0 .. $#PLUGIN_EVENT) {
669	# delete $hook[$idx]{$pkg};
670	# }	904	}
671		905
672	# remove commands	906	push @EXTS, $pkg;
673	for my $name (keys %command) {
674	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
675
676	if (@cb) {
677	$command{$name} = \@cb;
678	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
679	} else {
680	delete $command{$name};
681	delete $COMMAND{"$name\000"};
682	}
683	}
684
685	# remove extcmds
686	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
687	delete $extcmd{$name};
688	}
689
690	if (my $cb = $pkg->can ("unload")) {
691	eval {
692	$cb->($pkg);
693	1
694	} or warn "$pkg unloaded, but with errors: $@";
695	}
696
697	Symbol::delete_package $pkg;
698	}	907	}
699		908
700	sub load_extensions {	909	sub load_extensions {
701	my $LIBDIR = maps_directory "perl";
702
703	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
704	next unless -r $ext;	911	next unless -r $ext;
705	eval {	912	eval {
706	load_extension $ext;	913	load_extension $ext;
707	1	914	1
708	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
709	}	916	}
710	}	917	}
711		918
712	#############################################################################	919	#############################################################################
713	# extcmd framework, basically convert ext <msg>
714	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
715		920
716	attach_to_players	921	=head2 CORE EXTENSIONS
717	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 {
718	my ($pl, $buf) = @_;	1432	my ($self, $ob) = @_;
719		1433
720	my $msg = eval { from_json $buf };	1434	return find "~" . $ob->name . "/" . $self->{path}
		1435	if $self->per_player;
721		1436
722	if (ref $msg) {	1437	$self
723	if (my $cb = $extcmd{$msg->{msgtype}}) {	1438	}
724	if (my %reply = $cb->[0]->($pl, $msg)) {	1439
725	$pl->ext_reply ($msg->{msgid}, %reply);	1440	# find and load all maps in the 3x3 area around a map
726	}	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};
727	}	1497	}
		1498	}
		1499	undef $MAP_PREFETCHER;
		1500	};
		1501
		1502	()
		1503	}
		1504
		1505	sub save {
		1506	my ($self) = @_;
		1507
		1508	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1509
		1510	$self->{last_save} = $cf::RUNTIME;
		1511
		1512	return unless $self->dirty;
		1513
		1514	my $save = $self->save_path; utf8::encode $save;
		1515	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1516
		1517	$self->{load_path} = $save;
		1518
		1519	return if $self->{deny_save};
		1520
		1521	local $self->{last_access} = $self->last_access;#d#
		1522
		1523	cf::async {
		1524	$_->contr->save for $self->players;
		1525	};
		1526
		1527	if ($uniq) {
		1528	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1529	$self->_save_objects ($uniq, cf::IO_UNIQUES);
728	} else {	1530	} else {
729	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1531	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
730	}
731
732	cf::override;
733	},	1532	}
734	;	1533	}
735		1534
736	#############################################################################	1535	sub swap_out {
737	# load/save/clean perl data associated with a map
738
739	*cf::mapsupport::on_clean = sub {
740	my ($map) = @_;	1536	my ($self) = @_;
741		1537
742	my $path = $map->tmpname;	1538	# save first because save cedes
743	defined $path or return;	1539	$self->save;
744		1540
745	unlink "$path.pst";	1541	my $lock = cf::lock_acquire "map_data:" . $self->path;
746	};
747		1542
748	attach_to_maps prio => -10000, package => cf::mapsupport::;	1543	return if $self->players;
		1544	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1545	return if $self->{deny_save};
749		1546
750	#############################################################################	1547	$self->clear;
751	# load/save perl data associated with player->ob objects	1548	$self->in_memory (cf::MAP_SWAPPED);
752
753	sub all_objects(@) {
754	@_, map all_objects ($_->inv), @_
755	}	1549	}
756		1550
757	# TODO: compatibility cruft, remove when no longer needed	1551	sub reset_at {
758	attach_to_players	1552	my ($self) = @_;
759	on_load => sub {
760	my ($pl, $path) = @_;
761		1553
762	for my $o (all_objects $pl->ob) {	1554	# TODO: safety, remove and allow resettable per-player maps
763	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1555	return 1e99 if $self->isa ("ext::map_per_player");#d#
764	$o->set_ob_key_value ("_perl_data");	1556	return 1e99 if $self->{deny_reset};
765		1557
766	%$o = %{ Storable::thaw pack "H*", $value };	1558	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
767	}	1559	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
768	}	1560
		1561	$time + $to
		1562	}
		1563
		1564	sub should_reset {
		1565	my ($self) = @_;
		1566
		1567	$self->reset_at <= $cf::RUNTIME
		1568	}
		1569
		1570	sub reset {
		1571	my ($self) = @_;
		1572
		1573	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1574
		1575	return if $self->players;
		1576	return if $self->isa ("ext::map_per_player");#d#
		1577
		1578	warn "resetting map ", $self->path;#d#
		1579
		1580	delete $cf::MAP{$self->path};
		1581
		1582	$self->in_memory (cf::MAP_SWAPPED);
		1583	$self->clear;
		1584
		1585	$_->clear_links_to ($self) for values %cf::MAP;
		1586
		1587	$self->unlink_save;
		1588	$self->destroy;
		1589	}
		1590
		1591	my $nuke_counter = "aaaa";
		1592
		1593	sub nuke {
		1594	my ($self) = @_;
		1595
		1596	delete $cf::MAP{$self->path};
		1597
		1598	$self->unlink_save;
		1599
		1600	bless $self, "cf::map";
		1601	delete $self->{deny_reset};
		1602	$self->{deny_save} = 1;
		1603	$self->reset_timeout (1);
		1604	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1605
		1606	$cf::MAP{$self->path} = $self;
		1607
		1608	$self->reset; # polite request, might not happen
		1609	}
		1610
		1611	=item cf::map::unique_maps
		1612
		1613	Returns an arrayref of paths of all shared maps that have
		1614	instantiated unique items. May block.
		1615
		1616	=cut
		1617
		1618	sub unique_maps() {
		1619	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1620	or return;
		1621
		1622	my @paths;
		1623
		1624	for (@$files) {
		1625	utf8::decode $_;
		1626	next if /\.pst$/;
		1627	next unless /^$PATH_SEP/o;
		1628
		1629	s/\.map$//;
		1630	push @paths, $_;
769	},	1631	}
770	;
771		1632
772	#############################################################################	1633	\@paths
		1634	}
773		1635
774	=head2 CORE EXTENSIONS	1636	package cf;
775		1637
776	Functions and methods that extend core crossfire objects.	1638	=back
		1639
		1640	=head3 cf::object
		1641
		1642	=cut
		1643
		1644	package cf::object;
777		1645
778	=over 4	1646	=over 4
779		1647
780	=item cf::player::exists $login	1648	=item $ob->inv_recursive
781		1649
782	Returns true when the given account exists.	1650	Returns the inventory of the object _and_ their inventories, recursively.
783		1651
784	=cut	1652	=cut
785		1653
786	sub cf::player::exists($) {	1654	sub inv_recursive_;
787	cf::player::find $_[0]	1655	sub inv_recursive_ {
788	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1656	map { $_, inv_recursive_ $_->inv } @_
789	}	1657	}
		1658
		1659	sub inv_recursive {
		1660	inv_recursive_ inv $_[0]
		1661	}
		1662
		1663	package cf;
		1664
		1665	=back
		1666
		1667	=head3 cf::object::player
		1668
		1669	=over 4
790		1670
791	=item $player_object->reply ($npc, $msg[, $flags])	1671	=item $player_object->reply ($npc, $msg[, $flags])
792		1672
793	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1673	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
794	can be C<undef>. Does the right thing when the player is currently in a	1674	can be C<undef>. Does the right thing when the player is currently in a
…		…
796		1676
797	=cut	1677	=cut
798		1678
799	# rough implementation of a future "reply" method that works	1679	# rough implementation of a future "reply" method that works
800	# with dialog boxes.	1680	# with dialog boxes.
		1681	#TODO: the first argument must go, split into a $npc->reply_to ( method
801	sub cf::object::player::reply($$$;$) {	1682	sub cf::object::player::reply($$$;$) {
802	my ($self, $npc, $msg, $flags) = @_;	1683	my ($self, $npc, $msg, $flags) = @_;
803		1684
804	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1685	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
805		1686
…		…
809	$msg = $npc->name . " says: $msg" if $npc;	1690	$msg = $npc->name . " says: $msg" if $npc;
810	$self->message ($msg, $flags);	1691	$self->message ($msg, $flags);
811	}	1692	}
812	}	1693	}
813		1694
814	=item $player->ext_reply ($msgid, $msgtype, %msg)
815
816	Sends an ext reply to the player.
817
818	=cut
819
820	sub cf::player::ext_reply($$$%) {
821	my ($self, $id, %msg) = @_;
822
823	$msg{msgid} = $id;
824
825	$self->send ("ext " . to_json \%msg);
826	}
827
828	=item $player_object->may ("access")	1695	=item $player_object->may ("access")
829		1696
830	Returns wether the given player is authorized to access resource "access"	1697	Returns wether the given player is authorized to access resource "access"
831	(e.g. "command_wizcast").	1698	(e.g. "command_wizcast").
832		1699
…		…
839	(ref $cf::CFG{"may_$access"}	1706	(ref $cf::CFG{"may_$access"}
840	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1707	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
841	: $cf::CFG{"may_$access"})	1708	: $cf::CFG{"may_$access"})
842	}	1709	}
843		1710
844	=cut	1711	=item $player_object->enter_link
845		1712
846	#############################################################################	1713	Freezes the player and moves him/her to a special map (C<{link}>).
		1714
		1715	The player should be reasonably safe there for short amounts of time. You
		1716	I<MUST> call C<leave_link> as soon as possible, though.
		1717
		1718	Will never block.
		1719
		1720	=item $player_object->leave_link ($map, $x, $y)
		1721
		1722	Moves the player out of the special C<{link}> map onto the specified
		1723	map. If the map is not valid (or omitted), the player will be moved back
		1724	to the location he/she was before the call to C<enter_link>, or, if that
		1725	fails, to the emergency map position.
		1726
		1727	Might block.
		1728
		1729	=cut
		1730
		1731	sub link_map {
		1732	unless ($LINK_MAP) {
		1733	$LINK_MAP = cf::map::find "{link}"
		1734	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1735	$LINK_MAP->load;
		1736	}
		1737
		1738	$LINK_MAP
		1739	}
		1740
		1741	sub cf::object::player::enter_link {
		1742	my ($self) = @_;
		1743
		1744	$self->deactivate_recursive;
		1745
		1746	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1747
		1748	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1749	if $self->map;
		1750
		1751	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1752	}
		1753
		1754	sub cf::object::player::leave_link {
		1755	my ($self, $map, $x, $y) = @_;
		1756
		1757	my $link_pos = delete $self->{_link_pos};
		1758
		1759	unless ($map) {
		1760	# restore original map position
		1761	($map, $x, $y) = @{ $link_pos || [] };
		1762	$map = cf::map::find $map;
		1763
		1764	unless ($map) {
		1765	($map, $x, $y) = @$EMERGENCY_POSITION;
		1766	$map = cf::map::find $map
		1767	or die "FATAL: cannot load emergency map\n";
		1768	}
		1769	}
		1770
		1771	($x, $y) = (-1, -1)
		1772	unless (defined $x) && (defined $y);
		1773
		1774	# use -1 or undef as default coordinates, not 0, 0
		1775	($x, $y) = ($map->enter_x, $map->enter_y)
		1776	if $x <=0 && $y <= 0;
		1777
		1778	$map->load;
		1779	$map->load_diag;
		1780
		1781	return unless $self->contr->active;
		1782	$self->activate_recursive;
		1783	$self->enter_map ($map, $x, $y);
		1784	}
		1785
		1786	cf::player->attach (
		1787	on_logout => sub {
		1788	my ($pl) = @_;
		1789
		1790	# abort map switching before logout
		1791	if ($pl->ob->{_link_pos}) {
		1792	cf::sync_job {
		1793	$pl->ob->leave_link
		1794	};
		1795	}
		1796	},
		1797	on_login => sub {
		1798	my ($pl) = @_;
		1799
		1800	# try to abort aborted map switching on player login :)
		1801	# should happen only on crashes
		1802	if ($pl->ob->{_link_pos}) {
		1803	$pl->ob->enter_link;
		1804	(async {
		1805	# we need this sleep as the login has a concurrent enter_exit running
		1806	# and this sleep increases chances of the player not ending up in scorn
		1807	$pl->ob->reply (undef,
		1808	"There was an internal problem at your last logout, "
		1809	. "the server will try to bring you to your intended destination in a second.",
		1810	cf::NDI_RED);
		1811	Coro::Timer::sleep 1;
		1812	$pl->ob->leave_link;
		1813	})->prio (2);
		1814	}
		1815	},
		1816	);
		1817
		1818	=item $player_object->goto ($path, $x, $y)
		1819
		1820	=cut
		1821
		1822	sub cf::object::player::goto {
		1823	my ($self, $path, $x, $y) = @_;
		1824
		1825	$self->enter_link;
		1826
		1827	(async {
		1828	my $map = cf::map::find $path;
		1829	$map = $map->customise_for ($self) if $map;
		1830
		1831	# warn "entering ", $map->path, " at ($x, $y)\n"
		1832	# if $map;
		1833
		1834	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1835
		1836	$self->leave_link ($map, $x, $y);
		1837	})->prio (1);
		1838	}
		1839
		1840	=item $player_object->enter_exit ($exit_object)
		1841
		1842	=cut
		1843
		1844	sub parse_random_map_params {
		1845	my ($spec) = @_;
		1846
		1847	my $rmp = { # defaults
		1848	xsize => (cf::rndm 15, 40),
		1849	ysize => (cf::rndm 15, 40),
		1850	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1851	#layout => string,
		1852	};
		1853
		1854	for (split /\n/, $spec) {
		1855	my ($k, $v) = split /\s+/, $_, 2;
		1856
		1857	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1858	}
		1859
		1860	$rmp
		1861	}
		1862
		1863	sub prepare_random_map {
		1864	my ($exit) = @_;
		1865
		1866	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1867
		1868	# all this does is basically replace the /! path by
		1869	# a new random map path (?random/...) with a seed
		1870	# that depends on the exit object
		1871
		1872	my $rmp = parse_random_map_params $exit->msg;
		1873
		1874	if ($exit->map) {
		1875	$rmp->{region} = $exit->map->region_name;
		1876	$rmp->{origin_map} = $exit->map->path;
		1877	$rmp->{origin_x} = $exit->x;
		1878	$rmp->{origin_y} = $exit->y;
		1879	}
		1880
		1881	$rmp->{random_seed} ||= $exit->random_seed;
		1882
		1883	my $data = cf::to_json $rmp;
		1884	my $md5 = Digest::MD5::md5_hex $data;
		1885	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1886
		1887	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1888	aio_write $fh, 0, (length $data), $data, 0;
		1889	undef $fh;
		1890	aio_rename "$meta~", $meta;
		1891
		1892	$exit->slaying ("?random/$md5");
		1893	$exit->msg (undef);
		1894	}
		1895	}
		1896
		1897	sub cf::object::player::enter_exit {
		1898	my ($self, $exit) = @_;
		1899
		1900	return unless $self->type == cf::PLAYER;
		1901
		1902	$self->enter_link;
		1903
		1904	(async {
		1905	$self->deactivate_recursive; # just to be sure
		1906	unless (eval {
		1907	prepare_random_map $exit
		1908	if $exit->slaying eq "/!";
		1909
		1910	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1911	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1912
		1913	1;
		1914	}) {
		1915	$self->message ("Something went wrong deep within the crossfire server. "
		1916	. "I'll try to bring you back to the map you were before. "
		1917	. "Please report this to the dungeon master!",
		1918	cf::NDI_UNIQUE | cf::NDI_RED);
		1919
		1920	warn "ERROR in enter_exit: $@";
		1921	$self->leave_link;
		1922	}
		1923	})->prio (1);
		1924	}
		1925
		1926	=head3 cf::client
		1927
		1928	=over 4
		1929
		1930	=item $client->send_drawinfo ($text, $flags)
		1931
		1932	Sends a drawinfo packet to the client. Circumvents output buffering so
		1933	should not be used under normal circumstances.
		1934
		1935	=cut
		1936
		1937	sub cf::client::send_drawinfo {
		1938	my ($self, $text, $flags) = @_;
		1939
		1940	utf8::encode $text;
		1941	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1942	}
		1943
		1944
		1945	=item $success = $client->query ($flags, "text", \&cb)
		1946
		1947	Queues a query to the client, calling the given callback with
		1948	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1949	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1950
		1951	Queries can fail, so check the return code. Or don't, as queries will become
		1952	reliable at some point in the future.
		1953
		1954	=cut
		1955
		1956	sub cf::client::query {
		1957	my ($self, $flags, $text, $cb) = @_;
		1958
		1959	return unless $self->state == ST_PLAYING
		1960	|| $self->state == ST_SETUP
		1961	|| $self->state == ST_CUSTOM;
		1962
		1963	$self->state (ST_CUSTOM);
		1964
		1965	utf8::encode $text;
		1966	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1967
		1968	$self->send_packet ($self->{query_queue}[0][0])
		1969	if @{ $self->{query_queue} } == 1;
		1970	}
		1971
		1972	cf::client->attach (
		1973	on_reply => sub {
		1974	my ($ns, $msg) = @_;
		1975
		1976	# this weird shuffling is so that direct followup queries
		1977	# get handled first
		1978	my $queue = delete $ns->{query_queue}
		1979	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1980
		1981	(shift @$queue)->[1]->($msg);
		1982
		1983	push @{ $ns->{query_queue} }, @$queue;
		1984
		1985	if (@{ $ns->{query_queue} } == @$queue) {
		1986	if (@$queue) {
		1987	$ns->send_packet ($ns->{query_queue}[0][0]);
		1988	} else {
		1989	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1990	}
		1991	}
		1992	},
		1993	);
		1994
		1995	=item $client->async (\&cb)
		1996
		1997	Create a new coroutine, running the specified callback. The coroutine will
		1998	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1999	or loss of connection).
		2000
		2001	=cut
		2002
		2003	sub cf::client::async {
		2004	my ($self, $cb) = @_;
		2005
		2006	my $coro = &Coro::async ($cb);
		2007
		2008	$coro->on_destroy (sub {
		2009	delete $self->{_coro}{$coro+0};
		2010	});
		2011
		2012	$self->{_coro}{$coro+0} = $coro;
		2013
		2014	$coro
		2015	}
		2016
		2017	cf::client->attach (
		2018	on_destroy => sub {
		2019	my ($ns) = @_;
		2020
		2021	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2022	},
		2023	);
		2024
		2025	=back
		2026
847		2027
848	=head2 SAFE SCRIPTING	2028	=head2 SAFE SCRIPTING
849		2029
850	Functions that provide a safe environment to compile and execute	2030	Functions that provide a safe environment to compile and execute
851	snippets of perl code without them endangering the safety of the server	2031	snippets of perl code without them endangering the safety of the server
…		…
866		2046
867	=pod	2047	=pod
868		2048
869	The following fucntions and emthods are available within a safe environment:	2049	The following fucntions and emthods are available within a safe environment:
870		2050
871	cf::object contr pay_amount pay_player	2051	cf::object contr pay_amount pay_player map
872	cf::object::player player	2052	cf::object::player player
873	cf::player peaceful	2053	cf::player peaceful
		2054	cf::map trigger
874		2055
875	=cut	2056	=cut
876		2057
877	for (	2058	for (
878	["cf::object" => qw(contr pay_amount pay_player)],	2059	["cf::object" => qw(contr pay_amount pay_player map)],
879	["cf::object::player" => qw(player)],	2060	["cf::object::player" => qw(player)],
880	["cf::player" => qw(peaceful)],	2061	["cf::player" => qw(peaceful)],
		2062	["cf::map" => qw(trigger)],
881	) {	2063	) {
882	no strict 'refs';	2064	no strict 'refs';
883	my ($pkg, @funs) = @$_;	2065	my ($pkg, @funs) = @$_;
884	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2066	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
885	for @funs;	2067	for @funs;
…		…
1001		2183
1002	{	2184	{
1003	my $path = cf::localdir . "/database.pst";	2185	my $path = cf::localdir . "/database.pst";
1004		2186
1005	sub db_load() {	2187	sub db_load() {
1006	warn "loading database $path\n";#d# remove later
1007	$DB = stat $path ? Storable::retrieve $path : { };	2188	$DB = stat $path ? Storable::retrieve $path : { };
1008	}	2189	}
1009		2190
1010	my $pid;	2191	my $pid;
1011		2192
1012	sub db_save() {	2193	sub db_save() {
1013	warn "saving database $path\n";#d# remove later
1014	waitpid $pid, 0 if $pid;	2194	waitpid $pid, 0 if $pid;
1015	if (0 == ($pid = fork)) {	2195	if (0 == ($pid = fork)) {
1016	$DB->{_meta}{version} = 1;	2196	$DB->{_meta}{version} = 1;
1017	Storable::nstore $DB, "$path~";	2197	Storable::nstore $DB, "$path~";
1018	rename "$path~", $path;	2198	rename "$path~", $path;
…		…
1025	sub db_sync() {	2205	sub db_sync() {
1026	db_save if $dirty;	2206	db_save if $dirty;
1027	undef $dirty;	2207	undef $dirty;
1028	}	2208	}
1029		2209
1030	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2210	my $idle = Event->idle (min => 10, max => 20, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1031	db_sync;	2211	db_sync;
1032	});	2212	});
1033		2213
1034	sub db_dirty() {	2214	sub db_dirty() {
1035	$dirty = 1;	2215	$dirty = 1;
…		…
1049	$DB->{$_[0]} = $_[1];	2229	$DB->{$_[0]} = $_[1];
1050	}	2230	}
1051	db_dirty;	2231	db_dirty;
1052	}	2232	}
1053		2233
1054	attach_global	2234	cf::global->attach (
1055	prio => 10000,	2235	prio => 10000,
1056	on_cleanup => sub {	2236	on_cleanup => sub {
1057	db_sync;	2237	db_sync;
1058	},	2238	},
1059	;	2239	);
1060	}	2240	}
1061		2241
1062	#############################################################################	2242	#############################################################################
1063	# the server's main()	2243	# the server's main()
1064		2244
…		…
1066	open my $fh, "<:utf8", cf::confdir . "/config"	2246	open my $fh, "<:utf8", cf::confdir . "/config"
1067	or return;	2247	or return;
1068		2248
1069	local $/;	2249	local $/;
1070	*CFG = YAML::Syck::Load <$fh>;	2250	*CFG = YAML::Syck::Load <$fh>;
		2251
		2252	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2253
		2254	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2255	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2256
		2257	if (exists $CFG{mlockall}) {
		2258	eval {
		2259	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2260	and die "WARNING: m(un)lockall failed: $!\n";
		2261	};
		2262	warn $@ if $@;
		2263	}
1071	}	2264	}
1072		2265
1073	sub main {	2266	sub main {
		2267	# we must not ever block the main coroutine
		2268	local $Coro::idle = sub {
		2269	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2270	(async {
		2271	Event::one_event;
		2272	})->prio (Coro::PRIO_MAX);
		2273	};
		2274
1074	cfg_load;	2275	cfg_load;
1075	db_load;	2276	db_load;
1076	load_extensions;	2277	load_extensions;
		2278
		2279	$TICK_WATCHER->start;
1077	Event::loop;	2280	Event::loop;
1078	}	2281	}
1079		2282
1080	#############################################################################	2283	#############################################################################
1081	# initialisation	2284	# initialisation and cleanup
1082		2285
		2286	# install some emergency cleanup handlers
		2287	BEGIN {
		2288	for my $signal (qw(INT HUP TERM)) {
		2289	Event->signal (
		2290	data => WF_AUTOCANCEL,
		2291	signal => $signal,
		2292	cb => sub {
		2293	cf::cleanup "SIG$signal";
		2294	},
		2295	);
		2296	}
		2297	}
		2298
		2299	sub emergency_save() {
		2300	my $freeze_guard = cf::freeze_mainloop;
		2301
		2302	warn "enter emergency perl save\n";
		2303
		2304	cf::sync_job {
		2305	# use a peculiar iteration method to avoid tripping on perl
		2306	# refcount bugs in for. also avoids problems with players
		2307	# and maps saved/destroyed asynchronously.
		2308	warn "begin emergency player save\n";
		2309	for my $login (keys %cf::PLAYER) {
		2310	my $pl = $cf::PLAYER{$login} or next;
		2311	$pl->valid or next;
		2312	$pl->save;
		2313	}
		2314	warn "end emergency player save\n";
		2315
		2316	warn "begin emergency map save\n";
		2317	for my $path (keys %cf::MAP) {
		2318	my $map = $cf::MAP{$path} or next;
		2319	$map->valid or next;
		2320	$map->save;
		2321	}
		2322	warn "end emergency map save\n";
		2323	};
		2324
		2325	warn "leave emergency perl save\n";
		2326	}
		2327
1083	sub _perl_reload(&) {	2328	sub reload() {
1084	my ($msg) = @_;	2329	# can/must only be called in main
		2330	if ($Coro::current != $Coro::main) {
		2331	warn "can only reload from main coroutine";
		2332	return;
		2333	}
1085		2334
1086	$msg->("reloading...");	2335	warn "reloading...";
		2336
		2337	warn "cancelling server ticker";
		2338	$TICK_WATCHER->cancel;
		2339
		2340	cf::emergency_save;
1087		2341
1088	eval {	2342	eval {
1089	# cancel all watchers	2343	# if anything goes wrong in here, we should simply crash as we already saved
		2344
		2345	warn "syncing database to disk";
		2346	cf::db_sync;
		2347
		2348	warn "cancelling all WF_AUTOCANCEL watchers";
1090	$_->cancel for Event::all_watchers;	2349	for (Event::all_watchers) {
		2350	$_->cancel if $_->data & WF_AUTOCANCEL;
		2351	}
1091		2352
1092	# unload all extensions	2353	warn "flushing outstanding aio requests";
1093	for (@exts) {	2354	for (;;) {
1094	$msg->("unloading <$_>");	2355	IO::AIO::flush;
1095	unload_extension $_;	2356	Coro::cede;
		2357	last unless IO::AIO::nreqs;
		2358	warn "iterate...";
		2359	}
		2360
		2361	warn "cancelling all extension coros";
		2362	$_->cancel for values %EXT_CORO;
		2363	%EXT_CORO = ();
		2364
		2365	warn "removing commands";
		2366	%COMMAND = ();
		2367
		2368	warn "removing ext commands";
		2369	%EXTCMD = ();
		2370
		2371	warn "unloading/nuking all extensions";
		2372	for my $pkg (@EXTS) {
		2373	warn "... unloading $pkg";
		2374
		2375	if (my $cb = $pkg->can ("unload")) {
		2376	eval {
		2377	$cb->($pkg);
		2378	1
		2379	} or warn "$pkg unloaded, but with errors: $@";
1096	}	2380	}
1097		2381
		2382	warn "... nuking $pkg";
		2383	Symbol::delete_package $pkg;
		2384	}
		2385
1098	# unload all modules loaded from $LIBDIR	2386	warn "unloading all perl modules loaded from $LIBDIR";
1099	while (my ($k, $v) = each %INC) {	2387	while (my ($k, $v) = each %INC) {
1100	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2388	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1101		2389
1102	$msg->("removing <$k>");	2390	warn "... unloading $k";
1103	delete $INC{$k};	2391	delete $INC{$k};
1104		2392
1105	$k =~ s/\.pm$//;	2393	$k =~ s/\.pm$//;
1106	$k =~ s/\//::/g;	2394	$k =~ s/\//::/g;
1107		2395
…		…
1110	}	2398	}
1111		2399
1112	Symbol::delete_package $k;	2400	Symbol::delete_package $k;
1113	}	2401	}
1114		2402
1115	# sync database to disk
1116	cf::db_sync;
1117
1118	# get rid of safe::, as good as possible	2403	warn "getting rid of safe::, as good as possible";
1119	Symbol::delete_package "safe::$_"	2404	Symbol::delete_package "safe::$_"
1120	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2405	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1121		2406
1122	# remove register_script_function callbacks
1123	# TODO
1124
1125	# unload cf.pm "a bit"	2407	warn "unloading cf.pm \"a bit\"";
1126	delete $INC{"cf.pm"};	2408	delete $INC{"cf.pm"};
1127		2409
1128	# don't, removes xs symbols, too,	2410	# don't, removes xs symbols, too,
1129	# and global variables created in xs	2411	# and global variables created in xs
1130	#Symbol::delete_package __PACKAGE__;	2412	#Symbol::delete_package __PACKAGE__;
1131		2413
1132	# reload cf.pm	2414	warn "unload completed, starting to reload now";
		2415
1133	$msg->("reloading cf.pm");	2416	warn "reloading cf.pm";
1134	require cf;	2417	require cf;
		2418	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1135		2419
1136	# load config and database again	2420	warn "loading config and database again";
1137	cf::cfg_load;	2421	cf::cfg_load;
1138	cf::db_load;	2422	cf::db_load;
1139		2423
1140	# load extensions	2424	warn "loading extensions";
1141	$msg->("load extensions");
1142	cf::load_extensions;	2425	cf::load_extensions;
1143		2426
1144	# reattach attachments to objects	2427	warn "reattaching attachments to objects/players";
1145	$msg->("reattach");
1146	_global_reattach;	2428	_global_reattach;
		2429	warn "reattaching attachments to maps";
		2430	reattach $_ for values %MAP;
		2431
		2432	warn "restarting server ticker";
		2433
		2434	$TICK_WATCHER->start;
1147	};	2435	};
1148	$msg->($@) if $@;
1149		2436
1150	$msg->("reloaded");	2437	if ($@) {
		2438	warn $@;
		2439	warn "error while reloading, exiting.";
		2440	exit 1;
		2441	}
		2442
		2443	warn "reloaded";
1151	};	2444	};
1152		2445
1153	sub perl_reload() {	2446	our $RELOAD_WATCHER; # used only during reload
1154	_perl_reload {
1155	warn $_[0];
1156	print "$_[0]\n";
1157	};
1158	}
1159		2447
1160	register_command "perl-reload", 0, sub {	2448	register_command "reload" => sub {
1161	my ($who, $arg) = @_;	2449	my ($who, $arg) = @_;
1162		2450
1163	if ($who->flag (FLAG_WIZ)) {	2451	if ($who->flag (FLAG_WIZ)) {
1164	_perl_reload {	2452	$who->message ("reloading server.");
1165	warn $_[0];	2453
1166	$who->message ($_[0]);	2454	# doing reload synchronously and two reloads happen back-to-back,
		2455	# coro crashes during coro_state_free->destroy here.
		2456
		2457	$RELOAD_WATCHER ||= Event->timer (after => 0, data => WF_AUTOCANCEL, cb => sub {
		2458	reload;
		2459	undef $RELOAD_WATCHER;
1167	};	2460	});
1168	}	2461	}
1169	};	2462	};
1170		2463
1171	register "<global>", __PACKAGE__;
1172
1173	unshift @INC, $LIBDIR;	2464	unshift @INC, $LIBDIR;
1174		2465
		2466	my $bug_warning = 0;
		2467
1175	$TICK_WATCHER = Event->timer (	2468	$TICK_WATCHER = Event->timer (
		2469	reentrant => 0,
		2470	parked => 1,
1176	prio => 1,	2471	prio => 0,
1177	async => 1,
1178	at => $NEXT_TICK || 1,	2472	at => $NEXT_TICK || $TICK,
		2473	data => WF_AUTOCANCEL,
1179	cb => sub {	2474	cb => sub {
		2475	if ($Coro::current != $Coro::main) {
		2476	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2477	unless ++$bug_warning > 10;
		2478	return;
		2479	}
		2480
		2481	$NOW = Event::time;
		2482
1180	cf::server_tick; # one server iteration	2483	cf::server_tick; # one server iteration
1181		2484	$RUNTIME += $TICK;
1182	my $NOW = Event::time;
1183	$NEXT_TICK += $TICK;	2485	$NEXT_TICK += $TICK;
1184		2486
		2487	$WAIT_FOR_TICK->broadcast;
		2488	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2489
1185	# if we are delayed by four ticks or more, skip them all	2490	# if we are delayed by four ticks or more, skip them all
1186	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2491	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1187		2492
1188	$TICK_WATCHER->at ($NEXT_TICK);	2493	$TICK_WATCHER->at ($NEXT_TICK);
1189	$TICK_WATCHER->start;	2494	$TICK_WATCHER->start;
1190	},	2495	},
1191	);	2496	);
1192		2497
1193	IO::AIO::max_poll_time $TICK * 0.2;	2498	IO::AIO::max_poll_time $TICK * 0.2;
1194		2499
		2500	$AIO_POLL_WATCHER = Event->io (
1195	Event->io (fd => IO::AIO::poll_fileno,	2501	fd => IO::AIO::poll_fileno,
1196	poll => 'r',	2502	poll => 'r',
1197	prio => 5,	2503	prio => 5,
		2504	data => WF_AUTOCANCEL,
1198	cb => \&IO::AIO::poll_cb);	2505	cb => \&IO::AIO::poll_cb,
		2506	);
		2507
		2508	$WRITE_RUNTIME_WATCHER = Event->timer (
		2509	data => WF_AUTOCANCEL,
		2510	after => 1,
		2511	interval => 10,
		2512	prio => 6, # keep it lowest so it acts like a watchdog
		2513	cb => Coro::unblock_sub {
		2514	write_runtime
		2515	or warn "ERROR: unable to write runtime file: $!";
		2516	},
		2517	);
		2518
		2519	END { cf::emergency_save }
1199		2520
1200	1	2521	1
1201		2522

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