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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.49 by root, Sun Aug 27 17:59:26 2006 UTC vs.
Revision 1.188 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;
		23	use IO::AIO 2.32 ();
		24	use YAML::Syck ();
10	use Time::HiRes;	25	use Time::HiRes;
11	use Event;	26
12	$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
13		28
14	use strict;	29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	_reload_1;	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
17		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
18	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
19	our @EVENT;	44	our @EVENT;
20	our %PROP_TYPE;	45	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		46
24	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
26	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
		53
		54	our %CFG;
		55
		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;
		87
		88	#############################################################################
		89
		90	=head2 GLOBAL VARIABLES
		91
		92	=over 4
		93
		94	=item $cf::UPTIME
		95
		96	The timestamp of the server start (so not actually an uptime).
		97
		98	=item $cf::RUNTIME
		99
		100	The time this server has run, starts at 0 and is increased by $cf::TICK on
		101	every server tick.
		102
		103	=item $cf::LIBDIR
		104
		105	The perl library directory, where extensions and cf-specific modules can
		106	be found. It will be added to C<@INC> automatically.
		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
		112	=item $cf::TICK
		113
		114	The interval between server ticks, in seconds.
		115
		116	=item %cf::CFG
		117
		118	Configuration for the server, loaded from C</etc/crossfire/config>, or
		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.
		127
		128	=back
		129
		130	=cut
27		131
28	BEGIN {	132	BEGIN {
29	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
31	$msg .= "\n"	137	$msg .= "\n"
32	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
33		139
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
36	};	141	};
37	}	142	}
38		143
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	148	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		150
75	# 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
76	# within the Safe compartment.	152	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
78	no strict 'refs';	160	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	162	}
81		163
82	$Event::DIED = sub {	164	$Event::DIED = sub {
83	warn "error in event callback: @_";	165	warn "error in event callback: @_";
84	};	166	};
85		167
86	my %ext_pkg;	168	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		169
92	#############################################################################	170	=over 4
93	# utility functions	171
		172	=item dumpval $ref
		173
		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	}
94		194
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
		196
		197	=item $ref = cf::from_json $json
		198
		199	Converts a JSON string into the corresponding perl data structure.
		200
		201	=cut
96		202
97	sub from_json($) {	203	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	204	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	205	JSON::Syck::Load $_[0]
100	}	206	}
101		207
		208	=item $json = cf::to_json $ref
		209
		210	Converts a perl data structure into its JSON representation.
		211
		212	=cut
		213
102	sub to_json($) {	214	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
105	}	217	}
106		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
		373	=back
		374
		375	=cut
		376
107	#############################################################################	377	#############################################################################
108	# "new" plug-in system
109		378
		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+).
		388
		389	=over 4
		390
110	=item $object->attach ($attachment, key => $value...)	391	=item $attachable->attach ($attachment, key => $value...)
111		392
112	Attach a pre-registered attachment to an object.	393	=item $attachable->detach ($attachment)
113		394
114	=item $player->attach ($attachment, key => $value...)	395	Attach/detach a pre-registered attachment to a specific object and give it
		396	the specified key/value pairs as arguments.
115		397
116	Attach a pre-registered attachment to a player.	398	Example, attach a minesweeper attachment to the given object, making it a
		399	10x10 minesweeper game:
117		400
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	401	$obj->attach (minesweeper => width => 10, height => 10);
119		402
120	Attach a pre-registered attachment to a map.	403	=item $bool = $attachable->attached ($name)
121		404
122	=item cf::attach_global ...	405	Checks wether the named attachment is currently attached to the object.
123		406
124	Attach handlers for global events.	407	=item cf::CLASS->attach ...
125		408
126	This and all following C<attach_*>-functions expect any number of the	409	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	410
		411	Define an anonymous attachment and attach it to all objects of the given
		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:
128		445
129	=over 4	446	=over 4
130		447
131	=item prio => $number	448	=item prio => $number
132		449
…		…
134	by another C<prio> setting). Lower priority handlers get executed	451	by another C<prio> setting). Lower priority handlers get executed
135	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
136	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
137	unless you know what you are doing.	454	unless you know what you are doing.
138		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
139	=item on_I<event> => \&cb	462	=item on_I<event> => \&cb
140		463
141	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
142	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
143	handlers are recognised generally depends on the type of object these	466	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	475	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	476	object/class are recognised.
154		477
155	=back	478	=back
156		479
157	=item cf::attach_to_type $object_type, $subtype, ...	480	Example, define an attachment called "sockpuppet" that calls the given
		481	event handler when a monster attacks:
158		482
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	483	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	484	on_skill_attack => sub {
161	type.	485	my ($self, $victim) = @_;
		486	...
		487	}
		488	}
162		489
163	=item cf::attach_to_objects ...	490	=item $attachable->valid
164		491
165	Attach handlers to all objects. Do not use this except for debugging or	492	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	493	C-level object still exists. If you try to access an object that has no
167	the game.	494	valid C counterpart anymore you get an exception at runtime. This method
168		495	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	496	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		497
179	=cut	498	=cut
180		499
181	# the following variables are defined in .xs and must not be re-created	500	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	501	our @CB_GLOBAL = (); # registry for all global events
		502	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	503	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	504	our @CB_PLAYER = ();
		505	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	506	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	507	our @CB_MAP = ();
187		508
188	my %attachment;	509	my %attachment;
189		510
		511	sub cf::attachable::thawer_merge {
		512	# simply override everything except _meta
		513	local $_[0]{_meta};
		514	%{$_[0]} = %{$_[1]};
		515	}
		516
190	sub _attach_cb($\%$$$) {	517	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	518	my ($registry, $event, $prio, $cb) = @_;
192		519
193	use sort 'stable';	520	use sort 'stable';
194		521
195	$cb = [$prio, $cb];	522	$cb = [$prio, $cb];
196		523
197	@{$registry->[$event]} = sort	524	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	525	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	526	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	527	}
		528
		529	# hack
		530	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		531
204	# attach handles attaching event callbacks	532	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	533	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	534	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	535	sub _attach {
208	my ($registry, $klass, @arg) = @_;	536	my ($registry, $klass, @arg) = @_;
209		537
		538	my $object_type;
210	my $prio = 0;	539	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	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	}
218		546
219	while (@arg) {	547	while (@arg) {
220	my $type = shift @arg;	548	my $type = shift @arg;
221		549
222	if ($type eq "prio") {	550	if ($type eq "prio") {
223	$prio = shift @arg;	551	$prio = shift @arg;
224		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
225	} elsif ($type eq "package") {	562	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	563	my $pkg = shift @arg;
227		564
228	while (my ($name, $id) = each %cb_id) {	565	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	566	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	567	_attach_cb $registry, $id, $prio, $cb;
231	}	568	}
232	}	569	}
233		570
234	} elsif (exists $cb_id{$type}) {	571	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	572	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		573
237	} elsif (ref $type) {	574	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	575	warn "attaching objects not supported, ignoring.\n";
239		576
240	} else {	577	} else {
241	shift @arg;	578	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	579	warn "attach argument '$type' not supported, ignoring.\n";
243	}	580	}
244	}	581	}
245
246	\%undo
247	}	582	}
248		583
249	sub _attach_attachment {	584	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	585	my ($obj, $name, %arg) = @_;
251		586
252	my $res;	587	return if exists $obj->{_attachment}{$name};
253		588
254	if (my $attach = $attachment{$name}) {	589	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	590	my $registry = $obj->registry;
256		591
257	for (@$attach) {	592	for (@$attach) {
258	my ($klass, @attach) = @$_;	593	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	594	_attach $registry, $klass, @attach;
260	}	595	}
261		596
262	$obj->{$name} = \%arg;	597	$obj->{$name} = \%arg;
263	} else {	598	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	599	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	600	}
266		601
267	push @{$obj->{_attachment}}, $name;	602	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	603	}
272		604
273	sub cf::object::attach {	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 {
274	my ($obj, $name, %arg) = @_;	615	my ($obj, $name) = @_;
275		616
276	_attach_attachment $obj, $name, %arg;	617	if (ref $obj) {
277	}	618	delete $obj->{_attachment}{$name};
		619	reattach ($obj);
		620	} else {
		621	Carp::croak "cannot, currently, detach class attachments";
		622	}
		623	};
278		624
279	sub cf::player::attach {	625	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	626	my ($obj, $name) = @_;
281		627
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	628	exists $obj->{_attachment}{$name}
283	}	629	}
284		630
285	sub cf::map::attach {	631	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	632	eval "#line " . __LINE__ . " 'cf.pm'
		633	sub cf::\L$klass\E::_attach_registry {
		634	(\\\@CB_$klass, KLASS_$klass)
		635	}
287		636
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	637	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	638	my \$name = shift;
316		639
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	640	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		641	}
		642	";
		643	die if $@;
318	}	644	}
319		645
320	our $override;	646	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	647	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		648
…		…
336	for (@$callbacks) {	662	for (@$callbacks) {
337	eval { &{$_->[1]} };	663	eval { &{$_->[1]} };
338		664
339	if ($@) {	665	if ($@) {
340	warn "$@";	666	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	667	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	668	override;
343	}	669	}
344		670
345	return 1 if $override;	671	return 1 if $override;
346	}	672	}
347		673
348	0	674	0
349	}	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
		687	=back
		688
		689	=cut
350		690
351	#############################################################################	691	#############################################################################
352	# object support	692	# object support
353		693
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361
362	$obj->attach ($name, %{$args || {} });
363	}
364	}
365
366	# basically do the same as instantiate, without calling instantiate
367	sub reattach {	694	sub reattach {
		695	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	696	my ($obj) = @_;
		697
		698	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		699
369	my $registry = $obj->registry;	700	my $registry = $obj->registry;
370		701
371	@$registry = ();	702	@$registry = ();
372		703
373	delete $obj->{_attachment} unless @{ $obj->{_attachment} || [] };	704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		705
375	for my $name (@{ $obj->{_attachment} || [] }) {	706	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	707	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	708	for (@$attach) {
378	my ($klass, @attach) = @$_;	709	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	710	_attach $registry, $klass, @attach;
380	}	711	}
381	} else {	712	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	713	warn "object uses attachment '$name' that is not available, postponing.\n";
383	}	714	}
384	}	715	}
385	}	716	}
386		717
		718	cf::attachable->attach (
		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,
		732	on_clone => sub {
		733	my ($src, $dst) = @_;
		734
		735	@{$dst->registry} = @{$src->registry};
		736
		737	%$dst = %$src;
		738
		739	%{$dst->{_attachment}} = %{$src->{_attachment}}
		740	if exists $src->{_attachment};
		741	},
		742	);
		743
387	sub object_freezer_save {	744	sub object_freezer_save {
388	my ($filename, $objs) = @_;	745	my ($filename, $rdata, $objs) = @_;
389		746
390	$filename .= ".pst";	747	sync_job {
		748	if (length $$rdata) {
		749	warn sprintf "saving %s (%d,%d)\n",
		750	$filename, length $$rdata, scalar @$objs;
391		751
392	if (@$objs) {	752	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
393	open my $fh, ">:raw", "$filename~";	753	chmod SAVE_MODE, $fh;
394	chmod $fh, SAVE_MODE;	754	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
395	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	755	aio_fsync $fh;
396	close $fh;	756	close $fh;
		757
		758	if (@$objs) {
		759	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		760	chmod SAVE_MODE, $fh;
		761	my $data = Storable::nfreeze { version => 1, objs => $objs };
		762	aio_write $fh, 0, (length $data), $data, 0;
		763	aio_fsync $fh;
		764	close $fh;
		765	aio_rename "$filename.pst~", "$filename.pst";
		766	}
		767	} else {
		768	aio_unlink "$filename.pst";
		769	}
		770
397	rename "$filename~", $filename;	771	aio_rename "$filename~", $filename;
		772	} else {
		773	warn "FATAL: $filename~: $!\n";
		774	}
398	} else {	775	} else {
399	unlink $filename;	776	aio_unlink $filename;
		777	aio_unlink "$filename.pst";
		778	}
400	}	779	}
		780	}
		781
		782	sub object_freezer_as_string {
		783	my ($rdata, $objs) = @_;
		784
		785	use Data::Dumper;
		786
		787	$$rdata . Dumper $objs
401	}	788	}
402		789
403	sub object_thawer_load {	790	sub object_thawer_load {
404	my ($filename) = @_;	791	my ($filename) = @_;
405		792
406	open my $fh, "<:raw:perlio", "$filename.pst"	793	my ($data, $av);
		794
		795	(aio_load $filename, $data) >= 0
407	or return;	796	or return;
408		797
409	eval { local $/; (Storable::thaw <$fh>)->{objs} }	798	unless (aio_stat "$filename.pst") {
410	}	799	(aio_load "$filename.pst", $av) >= 0
411		800	or return;
412	attach_to_objects	801	$av = eval { (Storable::thaw $av)->{objs} };
413	prio => -1000000,
414	on_clone => sub {
415	my ($src, $dst) = @_;
416
417	@{$dst->registry} = @{$src->registry};
418
419	%$dst = %$src;
420
421	$dst->{_attachment} = [@{ $src->{_attachment} }]
422	if exists $src->{_attachment};
423	},	802	}
424	;	803
		804	warn sprintf "loading %s (%d)\n",
		805	$filename, length $data, scalar @{$av || []};#d#
		806	return ($data, $av);
		807	}
425		808
426	#############################################################################	809	#############################################################################
427	# old plug-in events	810	# command handling &c
428		811
429	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
430	my $extension = shift;
431	my $event_code = shift;
432		813
433	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
434	or return;	815	$name.
435		816
436	&$cb	817	=cut
437	}
438
439	sub inject_global_event {
440	my $event = shift;
441
442	my $cb = $hook[$event]
443	or return;
444
445	List::Util::max map &$_, values %$cb
446	}
447
448	sub inject_command {
449	my ($name, $obj, $params) = @_;
450
451	for my $cmd (@{ $command{$name} }) {
452	$cmd->[1]->($obj, $params);
453	}
454
455	-1
456	}
457		818
458	sub register_command {	819	sub register_command {
459	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
460		821
461	my $caller = caller;	822	my $caller = caller;
462	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
463		824
464	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
465	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
466	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
467		836
468	sub register_extcmd {	837	sub register_extcmd {
469	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
470		839
471	my $caller = caller;	840	$EXTCMD{$name} = $cb;
472	#warn "registering extcmd '$name' to '$caller'";
473
474	$extcmd{$name} = [$cb, $caller];
475	}	841	}
476		842
477	sub register {	843	cf::player->attach (
478	my ($base, $pkg) = @_;	844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
479		846
480	#TODO	847	my $cb = $COMMAND{$name}
481	}	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	);
482		874
483	sub load_extension {	875	sub load_extension {
484	my ($path) = @_;	876	my ($path) = @_;
485		877
486	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
487	my $base = $1;	879	my $base = $1;
488	my $pkg = $1;	880	my $pkg = $1;
489	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
490	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
491		883
492	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
493		885
494	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
495	or die "$path: $!";	887	or die "$path: $!";
496		888
497	my $source =	889	my $source =
498	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
499	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
500	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
501	. "\n};\n1";	893	. "\n};\n1";
502		894
503	eval $source	895	unless (eval $source) {
504	or die "$path: $@";	896	my $msg = $@ ? "$path: $@\n"
505		897	: "extension disabled.\n";
506	push @exts, $pkg;	898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
507	$ext_pkg{$base} = $pkg;	899	warn $@;
508		900	warn "mandatory extension failed to load, exiting.\n";
509	# no strict 'refs';	901	exit 1;
510	# @{"$pkg\::ISA"} = ext::;	902	}
511		903	die $@;
512	register $base, $pkg;
513	}
514
515	sub unload_extension {
516	my ($pkg) = @_;
517
518	warn "removing extension $pkg\n";
519
520	# remove hooks
521	#TODO
522	# for my $idx (0 .. $#PLUGIN_EVENT) {
523	# delete $hook[$idx]{$pkg};
524	# }	904	}
525		905
526	# remove commands	906	push @EXTS, $pkg;
527	for my $name (keys %command) {
528	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
529
530	if (@cb) {
531	$command{$name} = \@cb;
532	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
533	} else {
534	delete $command{$name};
535	delete $COMMAND{"$name\000"};
536	}
537	}
538
539	# remove extcmds
540	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
541	delete $extcmd{$name};
542	}
543
544	if (my $cb = $pkg->can ("unload")) {
545	eval {
546	$cb->($pkg);
547	1
548	} or warn "$pkg unloaded, but with errors: $@";
549	}
550
551	Symbol::delete_package $pkg;
552	}	907	}
553		908
554	sub load_extensions {	909	sub load_extensions {
555	my $LIBDIR = maps_directory "perl";
556
557	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
558	next unless -r $ext;	911	next unless -r $ext;
559	eval {	912	eval {
560	load_extension $ext;	913	load_extension $ext;
561	1	914	1
562	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
563	}	916	}
564	}	917	}
565		918
566	sub _perl_reload(&) {	919	#############################################################################
		920
		921	=head2 CORE EXTENSIONS
		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 {
		1432	my ($self, $ob) = @_;
		1433
		1434	return find "~" . $ob->name . "/" . $self->{path}
		1435	if $self->per_player;
		1436
		1437	$self
		1438	}
		1439
		1440	# find and load all maps in the 3x3 area around a map
		1441	sub load_diag {
567	my ($msg) = @_;	1442	my ($map) = @_;
568		1443
569	$msg->("reloading...");	1444	my @diag; # diagonal neighbours
570		1445
571	eval {	1446	for (0 .. 3) {
572	# 1. cancel all watchers	1447	my $neigh = $map->tile_path ($_)
573	$_->cancel for Event::all_watchers;	1448	or next;
		1449	$neigh = find $neigh, $map
		1450	or next;
		1451	$neigh->load;
574		1452
575	# 2. unload all extensions	1453	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
576	for (@exts) {	1454	[$neigh->tile_path (($_ + 1) % 4), $neigh];
577	$msg->("unloading <$_>");	1455	}
578	unload_extension $_;
579	}
580		1456
581	# 3. unload all modules loaded from $LIBDIR	1457	for (@diag) {
582	while (my ($k, $v) = each %INC) {	1458	my $neigh = find @$_
583	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1459	or next;
		1460	$neigh->load;
		1461	}
		1462	}
584		1463
585	$msg->("removing <$k>");	1464	sub find_sync {
586	delete $INC{$k};	1465	my ($path, $origin) = @_;
587		1466
588	$k =~ s/\.pm$//;	1467	cf::sync_job { find $path, $origin }
589	$k =~ s/\//::/g;	1468	}
590		1469
591	if (my $cb = $k->can ("unload_module")) {	1470	sub do_load_sync {
592	$cb->();	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};
593	}	1497	}
594
595	Symbol::delete_package $k;
596	}
597
598	# 4. get rid of safe::, as good as possible
599	Symbol::delete_package "safe::$_"
600	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
601
602	# 5. remove register_script_function callbacks
603	# TODO
604		1498	}
605	# 6. unload cf.pm "a bit"	1499	undef $MAP_PREFETCHER;
606	delete $INC{"cf.pm"};
607
608	# don't, removes xs symbols, too,
609	# and global variables created in xs
610	#Symbol::delete_package __PACKAGE__;
611
612	# 7. reload cf.pm
613	$msg->("reloading cf.pm");
614	require cf;
615	};	1500	};
616	$msg->($@) if $@;
617		1501
618	$msg->("reloaded");	1502	()
619	};	1503	}
620		1504
621	sub perl_reload() {	1505	sub save {
622	_perl_reload {	1506	my ($self) = @_;
623	warn $_[0];	1507
624	print "$_[0]\n";	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;
625	};	1525	};
626	}
627		1526
628	register_command "perl-reload", 0, sub {	1527	if ($uniq) {
629	my ($who, $arg) = @_;	1528	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
630		1529	$self->_save_objects ($uniq, cf::IO_UNIQUES);
631	if ($who->flag (FLAG_WIZ)) {
632	_perl_reload {
633	warn $_[0];
634	$who->message ($_[0]);
635	};
636	}
637	};
638
639	#############################################################################
640	# extcmd framework, basically convert ext <msg>
641	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
642
643	attach_to_players
644	on_extcmd => sub {
645	my ($pl, $buf) = @_;
646
647	my $msg = eval { from_json $buf };
648
649	if (ref $msg) {
650	if (my $cb = $extcmd{$msg->{msgtype}}) {
651	if (my %reply = $cb->[0]->($pl, $msg)) {
652	$pl->ext_reply ($msg->{msgid}, %reply);
653	}
654	}
655	} else {	1530	} else {
656	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);
657	}
658
659	cf::override;
660	},	1532	}
661	;	1533	}
662		1534
663	#############################################################################	1535	sub swap_out {
664	# load/save/clean perl data associated with a map
665
666	*cf::mapsupport::on_clean = sub {
667	my ($map) = @_;	1536	my ($self) = @_;
668		1537
669	my $path = $map->tmpname;	1538	# save first because save cedes
670	defined $path or return;	1539	$self->save;
671		1540
672	unlink "$path.cfperl";	1541	my $lock = cf::lock_acquire "map_data:" . $self->path;
673	unlink "$path.pst";
674	};
675		1542
676	*cf::mapsupport::on_swapin =	1543	return if $self->players;
677	*cf::mapsupport::on_load = sub {	1544	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1545	return if $self->{deny_save};
		1546
		1547	$self->clear;
		1548	$self->in_memory (cf::MAP_SWAPPED);
		1549	}
		1550
		1551	sub reset_at {
678	my ($map) = @_;	1552	my ($self) = @_;
679		1553
680	my $path = $map->tmpname;	1554	# TODO: safety, remove and allow resettable per-player maps
681	$path = $map->path unless defined $path;	1555	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1556	return 1e99 if $self->{deny_reset};
682		1557
683	open my $fh, "<:raw", "$path.cfperl"	1558	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
684	or return; # no perl data	1559	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
685		1560
686	my $data = Storable::thaw do { local $/; <$fh> };	1561	$time + $to
		1562	}
687		1563
688	$data->{version} <= 1	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
689	or return; # too new	1620	or return;
690		1621
691	$map->_set_obs ($data->{obs});	1622	my @paths;
692	};
693		1623
694	attach_to_maps prio => -10000, package => cf::mapsupport::;	1624	for (@$files) {
		1625	utf8::decode $_;
		1626	next if /\.pst$/;
		1627	next unless /^$PATH_SEP/o;
695		1628
696	#############################################################################	1629	s/\.map$//;
697	# load/save perl data associated with player->ob objects	1630	push @paths, $_;
698
699	sub all_objects(@) {
700	@_, map all_objects ($_->inv), @_
701	}
702
703	attach_to_players
704	on_load => sub {
705	my ($pl, $path) = @_;
706
707	for my $o (all_objects $pl->ob) {
708	if (my $value = $o->get_ob_key_value ("_perl_data")) {
709	$o->set_ob_key_value ("_perl_data");
710
711	%$o = %{ Storable::thaw pack "H*", $value };
712	}
713	}
714	},	1631	}
715	;
716		1632
717	#############################################################################	1633	\@paths
718	# core extensions - in perl
719
720	=item cf::player::exists $login
721
722	Returns true when the given account exists.
723
724	=cut
725
726	sub cf::player::exists($) {
727	cf::player::find $_[0]
728	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
729	}	1634	}
730		1635
		1636	package cf;
		1637
		1638	=back
		1639
		1640	=head3 cf::object
		1641
		1642	=cut
		1643
		1644	package cf::object;
		1645
		1646	=over 4
		1647
		1648	=item $ob->inv_recursive
		1649
		1650	Returns the inventory of the object _and_ their inventories, recursively.
		1651
		1652	=cut
		1653
		1654	sub inv_recursive_;
		1655	sub inv_recursive_ {
		1656	map { $_, inv_recursive_ $_->inv } @_
		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
		1670
731	=item $player->reply ($npc, $msg[, $flags])	1671	=item $player_object->reply ($npc, $msg[, $flags])
732		1672
733	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>
734	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
735	dialogue with the given NPC character.	1675	dialogue with the given NPC character.
736		1676
737	=cut	1677	=cut
738		1678
739	# rough implementation of a future "reply" method that works	1679	# rough implementation of a future "reply" method that works
740	# with dialog boxes.	1680	# with dialog boxes.
		1681	#TODO: the first argument must go, split into a $npc->reply_to ( method
741	sub cf::object::player::reply($$$;$) {	1682	sub cf::object::player::reply($$$;$) {
742	my ($self, $npc, $msg, $flags) = @_;	1683	my ($self, $npc, $msg, $flags) = @_;
743		1684
744	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1685	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
745		1686
…		…
749	$msg = $npc->name . " says: $msg" if $npc;	1690	$msg = $npc->name . " says: $msg" if $npc;
750	$self->message ($msg, $flags);	1691	$self->message ($msg, $flags);
751	}	1692	}
752	}	1693	}
753		1694
754	=item $player->ext_reply ($msgid, $msgtype, %msg)	1695	=item $player_object->may ("access")
755		1696
756	Sends an ext reply to the player.	1697	Returns wether the given player is authorized to access resource "access"
		1698	(e.g. "command_wizcast").
757		1699
758	=cut	1700	=cut
759		1701
760	sub cf::player::ext_reply($$$%) {	1702	sub cf::object::player::may {
		1703	my ($self, $access) = @_;
		1704
		1705	$self->flag (cf::FLAG_WIZ) ||
		1706	(ref $cf::CFG{"may_$access"}
		1707	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1708	: $cf::CFG{"may_$access"})
		1709	}
		1710
		1711	=item $player_object->enter_link
		1712
		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	$exit->msg (undef);
		1894	}
		1895	}
		1896
		1897	sub cf::object::player::enter_exit {
761	my ($self, $id, %msg) = @_;	1898	my ($self, $exit) = @_;
762		1899
763	$msg{msgid} = $id;	1900	return unless $self->type == cf::PLAYER;
764		1901
765	$self->send ("ext " . to_json \%msg);	1902	$self->enter_link;
766	}
767		1903
768	#############################################################################	1904	(async {
769	# map scripting support	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
		2027
		2028	=head2 SAFE SCRIPTING
		2029
		2030	Functions that provide a safe environment to compile and execute
		2031	snippets of perl code without them endangering the safety of the server
		2032	itself. Looping constructs, I/O operators and other built-in functionality
		2033	is not available in the safe scripting environment, and the number of
		2034	functions and methods that can be called is greatly reduced.
		2035
		2036	=cut
770		2037
771	our $safe = new Safe "safe";	2038	our $safe = new Safe "safe";
772	our $safe_hole = new Safe::Hole;	2039	our $safe_hole = new Safe::Hole;
773		2040
774	$SIG{FPE} = 'IGNORE';	2041	$SIG{FPE} = 'IGNORE';
775		2042
776	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2043	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
777		2044
778	# here we export the classes and methods available to script code	2045	# here we export the classes and methods available to script code
779		2046
		2047	=pod
		2048
		2049	The following fucntions and emthods are available within a safe environment:
		2050
		2051	cf::object contr pay_amount pay_player map
		2052	cf::object::player player
		2053	cf::player peaceful
		2054	cf::map trigger
		2055
		2056	=cut
		2057
780	for (	2058	for (
781	["cf::object" => qw(contr pay_amount pay_player)],	2059	["cf::object" => qw(contr pay_amount pay_player map)],
782	["cf::object::player" => qw(player)],	2060	["cf::object::player" => qw(player)],
783	["cf::player" => qw(peaceful)],	2061	["cf::player" => qw(peaceful)],
		2062	["cf::map" => qw(trigger)],
784	) {	2063	) {
785	no strict 'refs';	2064	no strict 'refs';
786	my ($pkg, @funs) = @$_;	2065	my ($pkg, @funs) = @$_;
787	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2066	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
788	for @funs;	2067	for @funs;
789	}	2068	}
		2069
		2070	=over 4
		2071
		2072	=item @retval = safe_eval $code, [var => value, ...]
		2073
		2074	Compiled and executes the given perl code snippet. additional var/value
		2075	pairs result in temporary local (my) scalar variables of the given name
		2076	that are available in the code snippet. Example:
		2077
		2078	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2079
		2080	=cut
790		2081
791	sub safe_eval($;@) {	2082	sub safe_eval($;@) {
792	my ($code, %vars) = @_;	2083	my ($code, %vars) = @_;
793		2084
794	my $qcode = $code;	2085	my $qcode = $code;
…		…
817	}	2108	}
818		2109
819	wantarray ? @res : $res[0]	2110	wantarray ? @res : $res[0]
820	}	2111	}
821		2112
		2113	=item cf::register_script_function $function => $cb
		2114
		2115	Register a function that can be called from within map/npc scripts. The
		2116	function should be reasonably secure and should be put into a package name
		2117	like the extension.
		2118
		2119	Example: register a function that gets called whenever a map script calls
		2120	C<rent::overview>, as used by the C<rent> extension.
		2121
		2122	cf::register_script_function "rent::overview" => sub {
		2123	...
		2124	};
		2125
		2126	=cut
		2127
822	sub register_script_function {	2128	sub register_script_function {
823	my ($fun, $cb) = @_;	2129	my ($fun, $cb) = @_;
824		2130
825	no strict 'refs';	2131	no strict 'refs';
826	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2132	*{"safe::$fun"} = $safe_hole->wrap ($cb);
827	}	2133	}
828		2134
		2135	=back
		2136
		2137	=cut
		2138
		2139	#############################################################################
		2140
		2141	=head2 EXTENSION DATABASE SUPPORT
		2142
		2143	Crossfire maintains a very simple database for extension use. It can
		2144	currently store anything that can be serialised using Storable, which
		2145	excludes objects.
		2146
		2147	The parameter C<$family> should best start with the name of the extension
		2148	using it, it should be unique.
		2149
		2150	=over 4
		2151
		2152	=item $hashref = cf::db_get $family
		2153
		2154	Return a hashref for use by the extension C<$family>, which can be
		2155	modified. After modifications, you have to call C<cf::db_dirty> or
		2156	C<cf::db_sync>.
		2157
		2158	=item $value = cf::db_get $family => $key
		2159
		2160	Returns a single value from the database
		2161
		2162	=item cf::db_put $family => $hashref
		2163
		2164	Stores the given family hashref into the database. Updates are delayed, if
		2165	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2166
		2167	=item cf::db_put $family => $key => $value
		2168
		2169	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2170	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2171
		2172	=item cf::db_dirty
		2173
		2174	Marks the database as dirty, to be updated at a later time.
		2175
		2176	=item cf::db_sync
		2177
		2178	Immediately write the database to disk I<if it is dirty>.
		2179
		2180	=cut
		2181
		2182	our $DB;
		2183
		2184	{
		2185	my $path = cf::localdir . "/database.pst";
		2186
		2187	sub db_load() {
		2188	$DB = stat $path ? Storable::retrieve $path : { };
		2189	}
		2190
		2191	my $pid;
		2192
		2193	sub db_save() {
		2194	waitpid $pid, 0 if $pid;
		2195	if (0 == ($pid = fork)) {
		2196	$DB->{_meta}{version} = 1;
		2197	Storable::nstore $DB, "$path~";
		2198	rename "$path~", $path;
		2199	cf::_exit 0 if defined $pid;
		2200	}
		2201	}
		2202
		2203	my $dirty;
		2204
		2205	sub db_sync() {
		2206	db_save if $dirty;
		2207	undef $dirty;
		2208	}
		2209
		2210	my $idle = Event->idle (min => 10, max => 20, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2211	db_sync;
		2212	});
		2213
		2214	sub db_dirty() {
		2215	$dirty = 1;
		2216	$idle->start;
		2217	}
		2218
		2219	sub db_get($;$) {
		2220	@_ >= 2
		2221	? $DB->{$_[0]}{$_[1]}
		2222	: ($DB->{$_[0]} ||= { })
		2223	}
		2224
		2225	sub db_put($$;$) {
		2226	if (@_ >= 3) {
		2227	$DB->{$_[0]}{$_[1]} = $_[2];
		2228	} else {
		2229	$DB->{$_[0]} = $_[1];
		2230	}
		2231	db_dirty;
		2232	}
		2233
		2234	cf::global->attach (
		2235	prio => 10000,
		2236	on_cleanup => sub {
		2237	db_sync;
		2238	},
		2239	);
		2240	}
		2241
829	#############################################################################	2242	#############################################################################
830	# the server's main()	2243	# the server's main()
831		2244
		2245	sub cfg_load {
		2246	open my $fh, "<:utf8", cf::confdir . "/config"
		2247	or return;
		2248
		2249	local $/;
		2250	*CFG = YAML::Syck::Load <$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	}
		2264	}
		2265
832	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
		2275	cfg_load;
		2276	db_load;
		2277	load_extensions;
		2278
		2279	$TICK_WATCHER->start;
833	Event::loop;	2280	Event::loop;
834	}	2281	}
835		2282
836	#############################################################################	2283	#############################################################################
837	# initialisation	2284	# initialisation and cleanup
838		2285
839	register "<global>", __PACKAGE__;	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	$map->save;
		2321	}
		2322	warn "end emergency map save\n";
		2323	};
		2324
		2325	warn "leave emergency perl save\n";
		2326	}
		2327
		2328	sub reload() {
		2329	# can/must only be called in main
		2330	if ($Coro::current != $Coro::main) {
		2331	warn "can only reload from main coroutine";
		2332	return;
		2333	}
		2334
		2335	warn "reloading...";
		2336
		2337	warn "cancelling server ticker";
		2338	$TICK_WATCHER->cancel;
		2339
		2340	cf::emergency_save;
		2341
		2342	eval {
		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";
		2349	for (Event::all_watchers) {
		2350	$_->cancel if $_->data & WF_AUTOCANCEL;
		2351	}
		2352
		2353	warn "flushing outstanding aio requests";
		2354	for (;;) {
		2355	IO::AIO::flush;
		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: $@";
		2380	}
		2381
		2382	warn "... nuking $pkg";
		2383	Symbol::delete_package $pkg;
		2384	}
		2385
		2386	warn "unloading all perl modules loaded from $LIBDIR";
		2387	while (my ($k, $v) = each %INC) {
		2388	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2389
		2390	warn "... unloading $k";
		2391	delete $INC{$k};
		2392
		2393	$k =~ s/\.pm$//;
		2394	$k =~ s/\//::/g;
		2395
		2396	if (my $cb = $k->can ("unload_module")) {
		2397	$cb->();
		2398	}
		2399
		2400	Symbol::delete_package $k;
		2401	}
		2402
		2403	warn "getting rid of safe::, as good as possible";
		2404	Symbol::delete_package "safe::$_"
		2405	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2406
		2407	warn "unloading cf.pm \"a bit\"";
		2408	delete $INC{"cf.pm"};
		2409
		2410	# don't, removes xs symbols, too,
		2411	# and global variables created in xs
		2412	#Symbol::delete_package __PACKAGE__;
		2413
		2414	warn "unload completed, starting to reload now";
		2415
		2416	warn "reloading cf.pm";
		2417	require cf;
		2418	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2419
		2420	warn "loading config and database again";
		2421	cf::cfg_load;
		2422	cf::db_load;
		2423
		2424	warn "loading extensions";
		2425	cf::load_extensions;
		2426
		2427	warn "reattaching attachments to objects/players";
		2428	_global_reattach;
		2429	warn "reattaching attachments to maps";
		2430	reattach $_ for values %MAP;
		2431
		2432	warn "restarting server ticker";
		2433
		2434	$TICK_WATCHER->start;
		2435	};
		2436
		2437	if ($@) {
		2438	warn $@;
		2439	warn "error while reloading, exiting.";
		2440	exit 1;
		2441	}
		2442
		2443	warn "reloaded";
		2444	};
		2445
		2446	our $RELOAD_WATCHER; # used only during reload
		2447
		2448	register_command "reload" => sub {
		2449	my ($who, $arg) = @_;
		2450
		2451	if ($who->flag (FLAG_WIZ)) {
		2452	$who->message ("reloading server.");
		2453
		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;
		2460	});
		2461	}
		2462	};
840		2463
841	unshift @INC, $LIBDIR;	2464	unshift @INC, $LIBDIR;
842		2465
843	load_extensions;	2466	my $bug_warning = 0;
844		2467
845	$TICK_WATCHER = Event->timer (	2468	$TICK_WATCHER = Event->timer (
		2469	reentrant => 0,
		2470	parked => 1,
846	prio => 1,	2471	prio => 0,
847	at => $NEXT_TICK || 1,	2472	at => $NEXT_TICK || $TICK,
		2473	data => WF_AUTOCANCEL,
848	cb => sub {	2474	cb => sub {
		2475	if ($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
849	cf::server_tick; # one server iteration	2483	cf::server_tick; # one server iteration
850		2484	$RUNTIME += $TICK;
851	my $NOW = Event::time;
852	$NEXT_TICK += $TICK;	2485	$NEXT_TICK += $TICK;
853		2486
		2487	$WAIT_FOR_TICK->broadcast;
		2488	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2489
854	# if we are delayed by four ticks, skip them all	2490	# if we are delayed by four ticks or more, skip them all
855	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2491	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
856		2492
857	$TICK_WATCHER->at ($NEXT_TICK);	2493	$TICK_WATCHER->at ($NEXT_TICK);
858	$TICK_WATCHER->start;	2494	$TICK_WATCHER->start;
859	},	2495	},
860	);	2496	);
861		2497
862	_reload_2;	2498	IO::AIO::max_poll_time $TICK * 0.2;
		2499
		2500	$AIO_POLL_WATCHER = Event->io (
		2501	fd => IO::AIO::poll_fileno,
		2502	poll => 'r',
		2503	prio => 5,
		2504	data => WF_AUTOCANCEL,
		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 }
863		2520
864	1	2521	1
865		2522

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