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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.3 by root, Sat Feb 4 20:38:29 2006 UTC vs.
Revision 1.137 by root, Fri Jan 5 10:23:05 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;
		8	use Storable;
		9	use Opcode;
		10	use Safe;
		11	use Safe::Hole;
5		12
6	use strict;	13	use Coro 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
7		19
8	our %COMMAND;	20	use Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.31 ();
		23	use YAML::Syck ();
		24	use Time::HiRes;
		25
		26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
		27
		28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		29	$YAML::Syck::ImplicitUnicode = 1;
		30
		31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority
		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
		35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
9	our @EVENT;	39	our @EVENT;
10	our %PROP_TYPE;	40	our $LIBDIR = datadir . "/ext";
11	our %PROP_IDX;	41
		42	our $TICK = MAX_TIME * 1e-6;
		43	our $TICK_WATCHER;
		44	our $NEXT_TICK;
		45	our $NOW;
		46
		47	our %CFG;
		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $RANDOM_MAPS = cf::localdir . "/random";
		55	our %EXT_CORO;
		56
		57	binmode STDOUT;
		58	binmode STDERR;
		59
		60	# read virtual server time, if available
		61	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		62	open my $fh, "<", cf::localdir . "/runtime"
		63	or die "unable to read runtime file: $!";
		64	$RUNTIME = <$fh> + 0.;
		65	}
		66
		67	mkdir cf::localdir;
		68	mkdir cf::localdir . "/" . cf::playerdir;
		69	mkdir cf::localdir . "/" . cf::tmpdir;
		70	mkdir cf::localdir . "/" . cf::uniquedir;
		71	mkdir $RANDOM_MAPS;
		72
		73	# a special map that is always available
		74	our $LINK_MAP;
		75	our $EMERGENCY_POSITION;
		76
		77	#############################################################################
		78
		79	=head2 GLOBAL VARIABLES
		80
		81	=over 4
		82
		83	=item $cf::UPTIME
		84
		85	The timestamp of the server start (so not actually an uptime).
		86
		87	=item $cf::RUNTIME
		88
		89	The time this server has run, starts at 0 and is increased by $cf::TICK on
		90	every server tick.
		91
		92	=item $cf::LIBDIR
		93
		94	The perl library directory, where extensions and cf-specific modules can
		95	be found. It will be added to C<@INC> automatically.
		96
		97	=item $cf::NOW
		98
		99	The time of the last (current) server tick.
		100
		101	=item $cf::TICK
		102
		103	The interval between server ticks, in seconds.
		104
		105	=item %cf::CFG
		106
		107	Configuration for the server, loaded from C</etc/crossfire/config>, or
		108	from wherever your confdir points to.
		109
		110	=back
		111
		112	=cut
12		113
13	BEGIN {	114	BEGIN {
14	@EVENT = map lc, @EVENT;
15
16	*CORE::GLOBAL::warn = sub {	115	*CORE::GLOBAL::warn = sub {
17	my $msg = join "", @_;	116	my $msg = join "", @_;
		117	utf8::encode $msg;
		118
18	$msg .= "\n"	119	$msg .= "\n"
19	unless $msg =~ /\n$/;	120	unless $msg =~ /\n$/;
20		121
21	print STDERR "cfperl: $msg";
22	LOG llevError, "cfperl: $msg";	122	LOG llevError, "cfperl: $msg";
23	};	123	};
24	}	124	}
25		125
26	# generate property mutators	126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
27	sub prop_gen {	127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
28	my ($prefix, $class) = @_;	128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
29		132
		133	# we bless all objects into (empty) derived classes to force a method lookup
		134	# within the Safe compartment.
		135	for my $pkg (qw(
		136	cf::global cf::attachable
		137	cf::object cf::object::player
		138	cf::client cf::player
		139	cf::arch cf::living
		140	cf::map cf::party cf::region
		141	)) {
30	no strict 'refs';	142	no strict 'refs';
31		143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
32	for my $prop (keys %PROP_TYPE) {
33	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
34	my $sub = lc $1;
35
36	my $type = $PROP_TYPE{$prop};
37	my $idx = $PROP_IDX {$prop};
38
39	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
40	$_[0]->get_property ($type, $idx)
41	};
42
43	*{"$class\::set_$sub"} = sub {
44	$_[0]->set_property ($type, $idx, $_[1]);
45	};
46	}
47	}	144	}
48		145
49	# auto-generate most of the API	146	$Event::DIED = sub {
		147	warn "error in event callback: @_";
		148	};
50		149
51	prop_gen OBJECT_PROP => "cf::object";	150	my %ext_pkg;
52	# CFAPI_OBJECT_ANIMATION?
53	prop_gen PLAYER_PROP => "cf::object::player";
54
55	prop_gen MAP_PROP => "cf::map";
56	prop_gen ARCH_PROP => "cf::arch";
57
58	# guessed hierarchies
59
60	@cf::object::player::ISA = 'cf::object';
61	@cf::object::map::ISA = 'cf::object';
62
63	my @exts;	151	my @exts;
64	my @hook;	152	my @hook;
65	my %command;
66		153
67	sub inject_event {	154	=head2 UTILITY FUNCTIONS
		155
		156	=over 4
		157
		158	=cut
		159
		160	use JSON::Syck (); # TODO# replace by JSON::PC once working
		161
		162	=item $ref = cf::from_json $json
		163
		164	Converts a JSON string into the corresponding perl data structure.
		165
		166	=cut
		167
		168	sub from_json($) {
		169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		170	JSON::Syck::Load $_[0]
		171	}
		172
		173	=item $json = cf::to_json $ref
		174
		175	Converts a perl data structure into its JSON representation.
		176
		177	=cut
		178
		179	sub to_json($) {
		180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		181	JSON::Syck::Dump $_[0]
		182	}
		183
		184	=item cf::lock_wait $string
		185
		186	Wait until the given lock is available. See cf::lock_acquire.
		187
		188	=item my $lock = cf::lock_acquire $string
		189
		190	Wait until the given lock is available and then acquires it and returns
		191	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		192	for example when the coroutine gets canceled), the lock is automatically
		193	returned.
		194
		195	Lock names should begin with a unique identifier (for example, cf::map::find
		196	uses map_find and cf::map::load uses map_load).
		197
		198	=cut
		199
		200	our %LOCK;
		201
		202	sub lock_wait($) {
		203	my ($key) = @_;
		204
		205	# wait for lock, if any
		206	while ($LOCK{$key}) {
		207	push @{ $LOCK{$key} }, $Coro::current;
		208	Coro::schedule;
		209	}
		210	}
		211
		212	sub lock_acquire($) {
		213	my ($key) = @_;
		214
		215	# wait, to be sure we are not locked
		216	lock_wait $key;
		217
		218	$LOCK{$key} = [];
		219
		220	Coro::guard {
		221	# wake up all waiters, to be on the safe side
		222	$_->ready for @{ delete $LOCK{$key} };
		223	}
		224	}
		225
		226	=item cf::async { BLOCK }
		227
		228	Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
		229	error instead of exiting the server in case of a problem.
		230
		231	=cut
		232
		233	sub async(&) {
68	my ($data) = @_;	234	my ($cb) = @_;
69		235
70	my $cb = $hook[$data->{event_code}]	236	Coro::async {
		237	eval { $cb->() };
		238	warn $@ if $@;
		239	}
		240	}
		241
		242	sub freeze_mainloop {
		243	return unless $TICK_WATCHER->is_active;
		244
		245	my $guard = Coro::guard { $TICK_WATCHER->start };
		246	$TICK_WATCHER->stop;
		247	$guard
		248	}
		249
		250	=item cf::sync_job { BLOCK }
		251
		252	The design of crossfire+ requires that the main coro ($Coro::main) is
		253	always able to handle events or runnable, as crossfire+ is only partly
		254	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		255
		256	If it must be done, put the blocking parts into C<sync_job>. This will run
		257	the given BLOCK in another coroutine while waiting for the result. The
		258	server will be frozen during this time, so the block should either finish
		259	fast or be very important.
		260
		261	=cut
		262
		263	sub sync_job(&) {
		264	my ($job) = @_;
		265
		266	if ($Coro::current == $Coro::main) {
		267	# this is the main coro, too bad, we have to block
		268	# till the operation succeeds, freezing the server :/
		269
		270	# TODO: use suspend/resume instead
		271	# (but this is cancel-safe)
		272	my $freeze_guard = freeze_mainloop;
		273
		274	my $busy = 1;
		275	my @res;
		276
		277	(Coro::async {
		278	@res = eval { $job->() };
		279	warn $@ if $@;
		280	undef $busy;
		281	})->prio (Coro::PRIO_MAX);
		282
		283	while ($busy) {
		284	Coro::cede_notself;
		285	Event::one_event unless Coro::nready;
		286	}
		287
		288	wantarray ? @res : $res[0]
		289	} else {
		290	# we are in another coroutine, how wonderful, everything just works
		291
		292	$job->()
		293	}
		294	}
		295
		296	=item $coro = cf::coro { BLOCK }
		297
		298	Creates and returns a new coro. This coro is automcatially being canceled
		299	when the extension calling this is being unloaded.
		300
		301	=cut
		302
		303	sub coro(&) {
		304	my $cb = shift;
		305
		306	my $coro = &cf::async ($cb);
		307
		308	$coro->on_destroy (sub {
		309	delete $EXT_CORO{$coro+0};
		310	});
		311	$EXT_CORO{$coro+0} = $coro;
		312
		313	$coro
		314	}
		315
		316	sub write_runtime {
		317	my $runtime = cf::localdir . "/runtime";
		318
		319	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
71	or return;	320	or return;
72		321
73	$_->($data) for values %$cb;	322	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		323	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		324	and return;
74		325
75	()	326	aio_fsync $fh
76	}	327	and return;
77		328
78	sub inject_command {	329	close $fh
79	my ($name, $obj, $params) = @_;	330	or return;
80		331
81	for my $cmd (@{ $command{$name} }) {	332	aio_rename "$runtime~", $runtime
82	$cmd->[1]->($obj, $params);	333	and return;
83	}
84		334
85	-1	335	1
86	}	336	}
		337
		338	=back
		339
		340	=cut
		341
		342	#############################################################################
		343
		344	package cf::path;
		345
		346	sub new {
		347	my ($class, $path, $base) = @_;
		348
		349	$path = $path->as_string if ref $path;
		350
		351	my $self = bless { }, $class;
		352
		353	# {... are special paths that are not touched
		354	# ?xxx/... are special absolute paths
		355	# ?random/... random maps
		356	# /! non-realised random map exit
		357	# /... normal maps
		358	# ~/... per-player maps without a specific player (DO NOT USE)
		359	# ~user/... per-player map of a specific user
		360
		361	if ($path =~ /^{/) {
		362	# fine as it is
		363	} elsif ($path =~ s{^\?random/}{}) {
		364	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		365	$self->{random} = cf::from_json $data;
		366	} else {
		367	if ($path =~ s{^~([^/]+)?}{}) {
		368	$self->{user_rel} = 1;
		369
		370	if (defined $1) {
		371	$self->{user} = $1;
		372	} elsif ($base =~ m{^~([^/]+)/}) {
		373	$self->{user} = $1;
		374	} else {
		375	warn "cannot resolve user-relative path without user <$path,$base>\n";
		376	}
		377	} elsif ($path =~ /^\//) {
		378	# already absolute
		379	} else {
		380	$base =~ s{[^/]+/?$}{};
		381	return $class->new ("$base/$path");
		382	}
		383
		384	for ($path) {
		385	redo if s{/\.?/}{/};
		386	redo if s{/[^/]+/\.\./}{/};
		387	}
		388	}
		389
		390	$self->{path} = $path;
		391
		392	$self
		393	}
		394
		395	# the name / primary key / in-game path
		396	sub as_string {
		397	my ($self) = @_;
		398
		399	$self->{user_rel} ? "~$self->{user}$self->{path}"
		400	: $self->{random} ? "?random/$self->{path}"
		401	: $self->{path}
		402	}
		403
		404	# the displayed name, this is a one way mapping
		405	sub visible_name {
		406	my ($self) = @_;
		407
		408	# if (my $rmp = $self->{random}) {
		409	# # todo: be more intelligent about this
		410	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		411	# } else {
		412	$self->as_string
		413	# }
		414	}
		415
		416	# escape the /'s in the path
		417	sub _escaped_path {
		418	# ∕ is U+2215
		419	(my $path = $_[0]{path}) =~ s/\//∕/g;
		420	$path
		421	}
		422
		423	# the original (read-only) location
		424	sub load_path {
		425	my ($self) = @_;
		426
		427	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		428	}
		429
		430	# the temporary/swap location
		431	sub save_path {
		432	my ($self) = @_;
		433
		434	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		435	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		436	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		437	}
		438
		439	# the unique path, might be eq to save_path
		440	sub uniq_path {
		441	my ($self) = @_;
		442
		443	$self->{user_rel} || $self->{random}
		444	? undef
		445	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		446	}
		447
		448	# return random map parameters, or undef
		449	sub random_map_params {
		450	my ($self) = @_;
		451
		452	$self->{random}
		453	}
		454
		455	# this is somewhat ugly, but style maps do need special treatment
		456	sub is_style_map {
		457	$_[0]{path} =~ m{^/styles/}
		458	}
		459
		460	package cf;
		461
		462	#############################################################################
		463
		464	=head2 ATTACHABLE OBJECTS
		465
		466	Many objects in crossfire are so-called attachable objects. That means you can
		467	attach callbacks/event handlers (a collection of which is called an "attachment")
		468	to it. All such attachable objects support the following methods.
		469
		470	In the following description, CLASS can be any of C<global>, C<object>
		471	C<player>, C<client> or C<map> (i.e. the attachable objects in
		472	crossfire+).
		473
		474	=over 4
		475
		476	=item $attachable->attach ($attachment, key => $value...)
		477
		478	=item $attachable->detach ($attachment)
		479
		480	Attach/detach a pre-registered attachment to a specific object and give it
		481	the specified key/value pairs as arguments.
		482
		483	Example, attach a minesweeper attachment to the given object, making it a
		484	10x10 minesweeper game:
		485
		486	$obj->attach (minesweeper => width => 10, height => 10);
		487
		488	=item $bool = $attachable->attached ($name)
		489
		490	Checks wether the named attachment is currently attached to the object.
		491
		492	=item cf::CLASS->attach ...
		493
		494	=item cf::CLASS->detach ...
		495
		496	Define an anonymous attachment and attach it to all objects of the given
		497	CLASS. See the next function for an explanation of its arguments.
		498
		499	You can attach to global events by using the C<cf::global> class.
		500
		501	Example, log all player logins:
		502
		503	cf::player->attach (
		504	on_login => sub {
		505	my ($pl) = @_;
		506	...
		507	},
		508	);
		509
		510	Example, attach to the jeweler skill:
		511
		512	cf::object->attach (
		513	type => cf::SKILL,
		514	subtype => cf::SK_JEWELER,
		515	on_use_skill => sub {
		516	my ($sk, $ob, $part, $dir, $msg) = @_;
		517	...
		518	},
		519	);
		520
		521	=item cf::CLASS::attachment $name, ...
		522
		523	Register an attachment by C<$name> through which attachable objects of the
		524	given CLASS can refer to this attachment.
		525
		526	Some classes such as crossfire maps and objects can specify attachments
		527	that are attached at load/instantiate time, thus the need for a name.
		528
		529	These calls expect any number of the following handler/hook descriptions:
		530
		531	=over 4
		532
		533	=item prio => $number
		534
		535	Set the priority for all following handlers/hooks (unless overwritten
		536	by another C<prio> setting). Lower priority handlers get executed
		537	earlier. The default priority is C<0>, and many built-in handlers are
		538	registered at priority C<-1000>, so lower priorities should not be used
		539	unless you know what you are doing.
		540
		541	=item type => $type
		542
		543	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		544	given type of objects only (the additional parameter C<subtype> can be
		545	used to further limit to the given subtype).
		546
		547	=item on_I<event> => \&cb
		548
		549	Call the given code reference whenever the named event happens (event is
		550	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		551	handlers are recognised generally depends on the type of object these
		552	handlers attach to).
		553
		554	See F<include/eventinc.h> for the full list of events supported, and their
		555	class.
		556
		557	=item package => package::
		558
		559	Look for sub functions of the name C<< on_I<event> >> in the given
		560	package and register them. Only handlers for eevents supported by the
		561	object/class are recognised.
		562
		563	=back
		564
		565	Example, define an attachment called "sockpuppet" that calls the given
		566	event handler when a monster attacks:
		567
		568	cf::object::attachment sockpuppet =>
		569	on_skill_attack => sub {
		570	my ($self, $victim) = @_;
		571	...
		572	}
		573	}
		574
		575	=item $attachable->valid
		576
		577	Just because you have a perl object does not mean that the corresponding
		578	C-level object still exists. If you try to access an object that has no
		579	valid C counterpart anymore you get an exception at runtime. This method
		580	can be used to test for existence of the C object part without causing an
		581	exception.
		582
		583	=cut
		584
		585	# the following variables are defined in .xs and must not be re-created
		586	our @CB_GLOBAL = (); # registry for all global events
		587	our @CB_ATTACHABLE = (); # registry for all attachables
		588	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		589	our @CB_PLAYER = ();
		590	our @CB_CLIENT = ();
		591	our @CB_TYPE = (); # registry for type (cf-object class) based events
		592	our @CB_MAP = ();
		593
		594	my %attachment;
		595
		596	sub _attach_cb($$$$) {
		597	my ($registry, $event, $prio, $cb) = @_;
		598
		599	use sort 'stable';
		600
		601	$cb = [$prio, $cb];
		602
		603	@{$registry->[$event]} = sort
		604	{ $a->[0] cmp $b->[0] }
		605	@{$registry->[$event] || []}, $cb;
		606	}
		607
		608	# hack
		609	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		610
		611	# attach handles attaching event callbacks
		612	# the only thing the caller has to do is pass the correct
		613	# registry (== where the callback attaches to).
		614	sub _attach {
		615	my ($registry, $klass, @arg) = @_;
		616
		617	my $object_type;
		618	my $prio = 0;
		619	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		620
		621	#TODO: get rid of this hack
		622	if ($attachable_klass{$klass}) {
		623	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		624	}
		625
		626	while (@arg) {
		627	my $type = shift @arg;
		628
		629	if ($type eq "prio") {
		630	$prio = shift @arg;
		631
		632	} elsif ($type eq "type") {
		633	$object_type = shift @arg;
		634	$registry = $CB_TYPE[$object_type] ||= [];
		635
		636	} elsif ($type eq "subtype") {
		637	defined $object_type or Carp::croak "subtype specified without type";
		638	my $object_subtype = shift @arg;
		639	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		640
		641	} elsif ($type eq "package") {
		642	my $pkg = shift @arg;
		643
		644	while (my ($name, $id) = each %cb_id) {
		645	if (my $cb = $pkg->can ($name)) {
		646	_attach_cb $registry, $id, $prio, $cb;
		647	}
		648	}
		649
		650	} elsif (exists $cb_id{$type}) {
		651	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		652
		653	} elsif (ref $type) {
		654	warn "attaching objects not supported, ignoring.\n";
		655
		656	} else {
		657	shift @arg;
		658	warn "attach argument '$type' not supported, ignoring.\n";
		659	}
		660	}
		661	}
		662
		663	sub _object_attach {
		664	my ($obj, $name, %arg) = @_;
		665
		666	return if exists $obj->{_attachment}{$name};
		667
		668	if (my $attach = $attachment{$name}) {
		669	my $registry = $obj->registry;
		670
		671	for (@$attach) {
		672	my ($klass, @attach) = @$_;
		673	_attach $registry, $klass, @attach;
		674	}
		675
		676	$obj->{$name} = \%arg;
		677	} else {
		678	warn "object uses attachment '$name' that is not available, postponing.\n";
		679	}
		680
		681	$obj->{_attachment}{$name} = undef;
		682	}
		683
		684	sub cf::attachable::attach {
		685	if (ref $_[0]) {
		686	_object_attach @_;
		687	} else {
		688	_attach shift->_attach_registry, @_;
		689	}
		690	};
		691
		692	# all those should be optimised
		693	sub cf::attachable::detach {
		694	my ($obj, $name) = @_;
		695
		696	if (ref $obj) {
		697	delete $obj->{_attachment}{$name};
		698	reattach ($obj);
		699	} else {
		700	Carp::croak "cannot, currently, detach class attachments";
		701	}
		702	};
		703
		704	sub cf::attachable::attached {
		705	my ($obj, $name) = @_;
		706
		707	exists $obj->{_attachment}{$name}
		708	}
		709
		710	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		711	eval "#line " . __LINE__ . " 'cf.pm'
		712	sub cf::\L$klass\E::_attach_registry {
		713	(\\\@CB_$klass, KLASS_$klass)
		714	}
		715
		716	sub cf::\L$klass\E::attachment {
		717	my \$name = shift;
		718
		719	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		720	}
		721	";
		722	die if $@;
		723	}
		724
		725	our $override;
		726	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		727
		728	sub override {
		729	$override = 1;
		730	@invoke_results = ();
		731	}
		732
		733	sub do_invoke {
		734	my $event = shift;
		735	my $callbacks = shift;
		736
		737	@invoke_results = ();
		738
		739	local $override;
		740
		741	for (@$callbacks) {
		742	eval { &{$_->[1]} };
		743
		744	if ($@) {
		745	warn "$@";
		746	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		747	override;
		748	}
		749
		750	return 1 if $override;
		751	}
		752
		753	0
		754	}
		755
		756	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		757
		758	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		759
		760	Generate an object-specific event with the given arguments.
		761
		762	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		763	removed in future versions), and there is no public API to access override
		764	results (if you must, access C<@cf::invoke_results> directly).
		765
		766	=back
		767
		768	=cut
		769
		770	#############################################################################
		771	# object support
		772
		773	sub reattach {
		774	# basically do the same as instantiate, without calling instantiate
		775	my ($obj) = @_;
		776
		777	my $registry = $obj->registry;
		778
		779	@$registry = ();
		780
		781	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		782
		783	for my $name (keys %{ $obj->{_attachment} || {} }) {
		784	if (my $attach = $attachment{$name}) {
		785	for (@$attach) {
		786	my ($klass, @attach) = @$_;
		787	_attach $registry, $klass, @attach;
		788	}
		789	} else {
		790	warn "object uses attachment '$name' that is not available, postponing.\n";
		791	}
		792	}
		793	}
		794
		795	cf::attachable->attach (
		796	prio => -1000000,
		797	on_instantiate => sub {
		798	my ($obj, $data) = @_;
		799
		800	$data = from_json $data;
		801
		802	for (@$data) {
		803	my ($name, $args) = @$_;
		804
		805	$obj->attach ($name, %{$args || {} });
		806	}
		807	},
		808	on_reattach => \&reattach,
		809	on_clone => sub {
		810	my ($src, $dst) = @_;
		811
		812	@{$dst->registry} = @{$src->registry};
		813
		814	%$dst = %$src;
		815
		816	%{$dst->{_attachment}} = %{$src->{_attachment}}
		817	if exists $src->{_attachment};
		818	},
		819	);
		820
		821	sub object_freezer_save {
		822	my ($filename, $rdata, $objs) = @_;
		823
		824	sync_job {
		825	if (length $$rdata) {
		826	warn sprintf "saving %s (%d,%d)\n",
		827	$filename, length $$rdata, scalar @$objs;
		828
		829	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		830	chmod SAVE_MODE, $fh;
		831	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		832	aio_fsync $fh;
		833	close $fh;
		834
		835	if (@$objs) {
		836	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		837	chmod SAVE_MODE, $fh;
		838	my $data = Storable::nfreeze { version => 1, objs => $objs };
		839	aio_write $fh, 0, (length $data), $data, 0;
		840	aio_fsync $fh;
		841	close $fh;
		842	aio_rename "$filename.pst~", "$filename.pst";
		843	}
		844	} else {
		845	aio_unlink "$filename.pst";
		846	}
		847
		848	aio_rename "$filename~", $filename;
		849	} else {
		850	warn "FATAL: $filename~: $!\n";
		851	}
		852	} else {
		853	aio_unlink $filename;
		854	aio_unlink "$filename.pst";
		855	}
		856	}
		857	}
		858
		859	sub object_freezer_as_string {
		860	my ($rdata, $objs) = @_;
		861
		862	use Data::Dumper;
		863
		864	$$rdata . Dumper $objs
		865	}
		866
		867	sub object_thawer_load {
		868	my ($filename) = @_;
		869
		870	my ($data, $av);
		871
		872	(aio_load $filename, $data) >= 0
		873	or return;
		874
		875	unless (aio_stat "$filename.pst") {
		876	(aio_load "$filename.pst", $av) >= 0
		877	or return;
		878	$av = eval { (Storable::thaw $av)->{objs} };
		879	}
		880
		881	warn sprintf "loading %s (%d)\n",
		882	$filename, length $data, scalar @{$av || []};#d#
		883	return ($data, $av);
		884	}
		885
		886	#############################################################################
		887	# command handling &c
		888
		889	=item cf::register_command $name => \&callback($ob,$args);
		890
		891	Register a callback for execution when the client sends the user command
		892	$name.
		893
		894	=cut
87		895
88	sub register_command {	896	sub register_command {
89	my ($name, $time, $cb) = @_;	897	my ($name, $cb) = @_;
90		898
91	my $caller = caller;	899	my $caller = caller;
		900	#warn "registering command '$name/$time' to '$caller'";
92		901
93	push @{ $command{$name} }, [$time, $cb, $caller];	902	push @{ $COMMAND{$name} }, [$caller, $cb];
94	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };	903	}
		904
		905	=item cf::register_extcmd $name => \&callback($pl,$packet);
		906
		907	Register a callbackf ro execution when the client sends an extcmd packet.
		908
		909	If the callback returns something, it is sent back as if reply was being
		910	called.
		911
		912	=cut
		913
		914	sub register_extcmd {
		915	my ($name, $cb) = @_;
		916
		917	my $caller = caller;
		918	#warn "registering extcmd '$name' to '$caller'";
		919
		920	$EXTCMD{$name} = [$cb, $caller];
		921	}
		922
		923	cf::player->attach (
		924	on_command => sub {
		925	my ($pl, $name, $params) = @_;
		926
		927	my $cb = $COMMAND{$name}
		928	or return;
		929
		930	for my $cmd (@$cb) {
		931	$cmd->[1]->($pl->ob, $params);
		932	}
		933
		934	cf::override;
		935	},
		936	on_extcmd => sub {
		937	my ($pl, $buf) = @_;
		938
		939	my $msg = eval { from_json $buf };
		940
		941	if (ref $msg) {
		942	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		943	if (my %reply = $cb->[0]->($pl, $msg)) {
		944	$pl->ext_reply ($msg->{msgid}, %reply);
		945	}
		946	}
		947	} else {
		948	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		949	}
		950
		951	cf::override;
		952	},
		953	);
		954
		955	sub register {
		956	my ($base, $pkg) = @_;
		957
		958	#TODO
95	}	959	}
96		960
97	sub load_extension {	961	sub load_extension {
98	my ($path) = @_;	962	my ($path) = @_;
99		963
100	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	964	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		965	my $base = $1;
101	my $pkg = $1;	966	my $pkg = $1;
102	$pkg =~ s/[^[:word:]]/_/g;	967	$pkg =~ s/[^[:word:]]/_/g;
103	$pkg = "cf::ext::$pkg";	968	$pkg = "ext::$pkg";
104		969
105	warn "loading '$path' into '$pkg'\n";	970	warn "loading '$path' into '$pkg'\n";
106		971
107	open my $fh, "<:utf8", $path	972	open my $fh, "<:utf8", $path
108	or die "$path: $!";	973	or die "$path: $!";
…		…
112	. "#line 1 \"$path\"\n{\n"	977	. "#line 1 \"$path\"\n{\n"
113	. (do { local $/; <$fh> })	978	. (do { local $/; <$fh> })
114	. "\n};\n1";	979	. "\n};\n1";
115		980
116	eval $source	981	eval $source
117	or die "$path: $@";	982	or die $@ ? "$path: $@\n"
		983	: "extension disabled.\n";
118		984
119	push @exts, $pkg;	985	push @exts, $pkg;
		986	$ext_pkg{$base} = $pkg;
120		987
121	no strict 'refs';	988	# no strict 'refs';
122
123	# @{"$pkg\::ISA"} = cf::ext::;	989	# @{"$pkg\::ISA"} = ext::;
124		990
125	for my $idx (0 .. $#EVENT) {	991	register $base, $pkg;
126	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
127	warn "registering $EVENT[$idx] hook\n";
128	$hook[$idx]{$pkg} = $ref;
129	}
130	}
131	}	992	}
132		993
133	sub unload_extension {	994	sub unload_extension {
134	my ($pkg) = @_;	995	my ($pkg) = @_;
135		996
136	warn "removing extension $pkg\n";	997	warn "removing extension $pkg\n";
137		998
138	# remove hooks	999	# remove hooks
		1000	#TODO
139	for my $idx (0 .. $#EVENT) {	1001	# for my $idx (0 .. $#PLUGIN_EVENT) {
140	delete $hook[$idx]{$pkg};	1002	# delete $hook[$idx]{$pkg};
141	}	1003	# }
142		1004
143	# remove commands	1005	# remove commands
144	for my $name (keys %command) {	1006	for my $name (keys %COMMAND) {
145	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1007	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
146		1008
147	if (@cb) {	1009	if (@cb) {
148	$command{$name} = \@cb;	1010	$COMMAND{$name} = \@cb;
149	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
150	} else {	1011	} else {
151	delete $command{$name};
152	delete $COMMAND{"$name\000"};	1012	delete $COMMAND{$name};
153	}	1013	}
		1014	}
		1015
		1016	# remove extcmds
		1017	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
		1018	delete $EXTCMD{$name};
		1019	}
		1020
		1021	if (my $cb = $pkg->can ("unload")) {
		1022	eval {
		1023	$cb->($pkg);
		1024	1
		1025	} or warn "$pkg unloaded, but with errors: $@";
154	}	1026	}
155		1027
156	Symbol::delete_package $pkg;	1028	Symbol::delete_package $pkg;
157	}	1029	}
158		1030
159	sub load_extensions {	1031	sub load_extensions {
160	my $LIBDIR = maps_directory "perl";
161
162	for my $ext (<$LIBDIR/*.ext>) {	1032	for my $ext (<$LIBDIR/*.ext>) {
163	next unless -r $ext;	1033	next unless -r $ext;
164	eval {	1034	eval {
165	load_extension $ext;	1035	load_extension $ext;
166	1	1036	1
167	} or warn "$ext not loaded: $@";	1037	} or warn "$ext not loaded: $@";
168	}	1038	}
169	}	1039	}
170		1040
		1041	#############################################################################
		1042	# load/save/clean perl data associated with a map
		1043
		1044	*cf::mapsupport::on_clean = sub {
		1045	my ($map) = @_;
		1046
		1047	my $path = $map->tmpname;
		1048	defined $path or return;
		1049
		1050	unlink "$path.pst";
		1051	};
		1052
		1053	cf::map->attach (prio => -10000, package => cf::mapsupport::);
		1054
		1055	#############################################################################
		1056	# load/save perl data associated with player->ob objects
		1057
		1058	sub all_objects(@) {
		1059	@_, map all_objects ($_->inv), @_
		1060	}
		1061
		1062	# TODO: compatibility cruft, remove when no longer needed
		1063	cf::player->attach (
		1064	on_load => sub {
		1065	my ($pl, $path) = @_;
		1066
		1067	for my $o (all_objects $pl->ob) {
		1068	if (my $value = $o->get_ob_key_value ("_perl_data")) {
		1069	$o->set_ob_key_value ("_perl_data");
		1070
		1071	%$o = %{ Storable::thaw pack "H*", $value };
		1072	}
		1073	}
		1074	},
		1075	);
		1076
		1077	#############################################################################
		1078
		1079	=head2 CORE EXTENSIONS
		1080
		1081	Functions and methods that extend core crossfire objects.
		1082
		1083	=head3 cf::player
		1084
		1085	=over 4
		1086
		1087	=item cf::player::exists $login
		1088
		1089	Returns true when the given account exists.
		1090
		1091	=cut
		1092
		1093	sub cf::player::exists($) {
		1094	cf::player::find $_[0]
		1095	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
		1096	}
		1097
		1098	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1099
		1100	Sends an ext reply to the player.
		1101
		1102	=cut
		1103
		1104	sub cf::player::ext_reply($$$%) {
		1105	my ($self, $id, %msg) = @_;
		1106
		1107	$msg{msgid} = $id;
		1108
		1109	$self->send ("ext " . to_json \%msg);
		1110	}
		1111
		1112	=back
		1113
		1114
		1115	=head3 cf::map
		1116
		1117	=over 4
		1118
		1119	=cut
		1120
		1121	package cf::map;
		1122
		1123	use Fcntl;
		1124	use Coro::AIO;
		1125
		1126	our $MAX_RESET = 3600;
		1127	our $DEFAULT_RESET = 3000;
		1128
		1129	sub generate_random_map {
		1130	my ($path, $rmp) = @_;
		1131
		1132	# mit "rum" bekleckern, nicht
		1133	cf::map::_create_random_map
		1134	$path,
		1135	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1136	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1137	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1138	$rmp->{exit_on_final_map},
		1139	$rmp->{xsize}, $rmp->{ysize},
		1140	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1141	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1142	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1143	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1144	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1145	(cf::region::find $rmp->{region})
		1146	}
		1147
		1148	# and all this just because we cannot iterate over
		1149	# all maps in C++...
		1150	sub change_all_map_light {
		1151	my ($change) = @_;
		1152
		1153	$_->change_map_light ($change)
		1154	for grep $_->outdoor, values %cf::MAP;
		1155	}
		1156
		1157	sub try_load_header($) {
		1158	my ($path) = @_;
		1159
		1160	utf8::encode $path;
		1161	aio_open $path, O_RDONLY, 0
		1162	or return;
		1163
		1164	my $map = cf::map::new
		1165	or return;
		1166
		1167	# for better error messages only, will be overwritten
		1168	$map->path ($path);
		1169
		1170	$map->load_header ($path)
		1171	or return;
		1172
		1173	$map->{load_path} = $path;
		1174
		1175	$map
		1176	}
		1177
		1178	sub find;
		1179	sub find {
		1180	my ($path, $origin) = @_;
		1181
		1182	#warn "find<$path,$origin>\n";#d#
		1183
		1184	$path = new cf::path $path, $origin && $origin->path;
		1185	my $key = $path->as_string;
		1186
		1187	cf::lock_wait "map_find:$key";
		1188
		1189	$cf::MAP{$key} || do {
		1190	my $guard = cf::lock_acquire "map_find:$key";
		1191
		1192	# do it the slow way
		1193	my $map = try_load_header $path->save_path;
		1194
		1195	Coro::cede;
		1196
		1197	if ($map) {
		1198	$map->last_access ((delete $map->{last_access})
		1199	|| $cf::RUNTIME); #d#
		1200	# safety
		1201	$map->{instantiate_time} = $cf::RUNTIME
		1202	if $map->{instantiate_time} > $cf::RUNTIME;
		1203	} else {
		1204	if (my $rmp = $path->random_map_params) {
		1205	$map = generate_random_map $key, $rmp;
		1206	} else {
		1207	$map = try_load_header $path->load_path;
		1208	}
		1209
		1210	$map or return;
		1211
		1212	$map->{load_original} = 1;
		1213	$map->{instantiate_time} = $cf::RUNTIME;
		1214	$map->last_access ($cf::RUNTIME);
		1215	$map->instantiate;
		1216
		1217	# per-player maps become, after loading, normal maps
		1218	$map->per_player (0) if $path->{user_rel};
		1219	}
		1220
		1221	$map->path ($key);
		1222	$map->{path} = $path;
		1223	$map->{last_save} = $cf::RUNTIME;
		1224
		1225	Coro::cede;
		1226
		1227	if ($map->should_reset) {
		1228	$map->reset;
		1229	undef $guard;
		1230	$map = find $path
		1231	or return;
		1232	}
		1233
		1234	$cf::MAP{$key} = $map
		1235	}
		1236	}
		1237
		1238	sub load {
		1239	my ($self) = @_;
		1240
		1241	my $path = $self->{path};
		1242	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1243
		1244	return if $self->in_memory != cf::MAP_SWAPPED;
		1245
		1246	$self->in_memory (cf::MAP_LOADING);
		1247
		1248	$self->alloc;
		1249	$self->load_objects ($self->{load_path}, 1)
		1250	or return;
		1251
		1252	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1253	if delete $self->{load_original};
		1254
		1255	if (my $uniq = $path->uniq_path) {
		1256	utf8::encode $uniq;
		1257	if (aio_open $uniq, O_RDONLY, 0) {
		1258	$self->clear_unique_items;
		1259	$self->load_objects ($uniq, 0);
		1260	}
		1261	}
		1262
		1263	Coro::cede;
		1264
		1265	# now do the right thing for maps
		1266	$self->link_multipart_objects;
		1267
		1268	if ($self->{path}->is_style_map) {
		1269	$self->{deny_save} = 1;
		1270	$self->{deny_reset} = 1;
		1271	} else {
		1272	$self->fix_auto_apply;
		1273	$self->decay_objects;
		1274	$self->update_buttons;
		1275	$self->set_darkness_map;
		1276	$self->difficulty ($self->estimate_difficulty)
		1277	unless $self->difficulty;
		1278	$self->activate;
		1279	}
		1280
		1281	Coro::cede;
		1282
		1283	$self->in_memory (cf::MAP_IN_MEMORY);
		1284	}
		1285
		1286	sub find_sync {
		1287	my ($path, $origin) = @_;
		1288
		1289	cf::sync_job { cf::map::find $path, $origin }
		1290	}
		1291
		1292	sub do_load_sync {
		1293	my ($map) = @_;
		1294
		1295	cf::sync_job { $map->load };
		1296	}
		1297
		1298	sub save {
		1299	my ($self) = @_;
		1300
		1301	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1302
		1303	$self->{last_save} = $cf::RUNTIME;
		1304
		1305	return unless $self->dirty;
		1306
		1307	my $save = $self->{path}->save_path; utf8::encode $save;
		1308	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1309
		1310	$self->{load_path} = $save;
		1311
		1312	return if $self->{deny_save};
		1313
		1314	local $self->{last_access} = $self->last_access;#d#
		1315
		1316	if ($uniq) {
		1317	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1318	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1319	} else {
		1320	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1321	}
		1322	}
		1323
		1324	sub swap_out {
		1325	my ($self) = @_;
		1326
		1327	# save first because save cedes
		1328	$self->save;
		1329
		1330	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1331
		1332	return if $self->players;
		1333	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1334	return if $self->{deny_save};
		1335
		1336	$self->clear;
		1337	$self->in_memory (cf::MAP_SWAPPED);
		1338	}
		1339
		1340	sub reset_at {
		1341	my ($self) = @_;
		1342
		1343	# TODO: safety, remove and allow resettable per-player maps
		1344	return 1e99 if $self->{path}{user_rel};
		1345	return 1e99 if $self->{deny_reset};
		1346
		1347	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1348	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1349
		1350	$time + $to
		1351	}
		1352
		1353	sub should_reset {
		1354	my ($self) = @_;
		1355
		1356	$self->reset_at <= $cf::RUNTIME
		1357	}
		1358
		1359	sub unlink_save {
		1360	my ($self) = @_;
		1361
		1362	utf8::encode (my $save = $self->{path}->save_path);
		1363	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1364	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1365	}
		1366
		1367	sub rename {
		1368	my ($self, $new_path) = @_;
		1369
		1370	$self->unlink_save;
		1371
		1372	delete $cf::MAP{$self->path};
		1373	$self->{path} = new cf::path $new_path;
		1374	$self->path ($self->{path}->as_string);
		1375	$cf::MAP{$self->path} = $self;
		1376
		1377	$self->save;
		1378	}
		1379
		1380	sub reset {
		1381	my ($self) = @_;
		1382
		1383	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1384
		1385	return if $self->players;
		1386	return if $self->{path}{user_rel};#d#
		1387
		1388	warn "resetting map ", $self->path;#d#
		1389
		1390	delete $cf::MAP{$self->path};
		1391
		1392	$_->clear_links_to ($self) for values %cf::MAP;
		1393
		1394	$self->unlink_save;
		1395	$self->destroy;
		1396	}
		1397
		1398	my $nuke_counter = "aaaa";
		1399
		1400	sub nuke {
		1401	my ($self) = @_;
		1402
		1403	$self->{deny_save} = 1;
		1404	$self->reset_timeout (1);
		1405	$self->rename ("{nuke}/" . ($nuke_counter++));
		1406	$self->reset; # polite request, might not happen
		1407	}
		1408
		1409	sub customise_for {
		1410	my ($map, $ob) = @_;
		1411
		1412	if ($map->per_player) {
		1413	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1414	}
		1415
		1416	$map
		1417	}
		1418
		1419	sub emergency_save {
		1420	my $freeze_guard = cf::freeze_mainloop;
		1421
		1422	warn "enter emergency map save\n";
		1423
		1424	cf::sync_job {
		1425	warn "begin emergency map save\n";
		1426	$_->save for values %cf::MAP;
		1427	};
		1428
		1429	warn "end emergency map save\n";
		1430	}
		1431
		1432	package cf;
		1433
		1434	=back
		1435
		1436
		1437	=head3 cf::object::player
		1438
		1439	=over 4
		1440
		1441	=item $player_object->reply ($npc, $msg[, $flags])
		1442
		1443	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
		1444	can be C<undef>. Does the right thing when the player is currently in a
		1445	dialogue with the given NPC character.
		1446
		1447	=cut
		1448
		1449	# rough implementation of a future "reply" method that works
		1450	# with dialog boxes.
		1451	#TODO: the first argument must go, split into a $npc->reply_to ( method
		1452	sub cf::object::player::reply($$$;$) {
		1453	my ($self, $npc, $msg, $flags) = @_;
		1454
		1455	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
		1456
		1457	if ($self->{record_replies}) {
		1458	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		1459	} else {
		1460	$msg = $npc->name . " says: $msg" if $npc;
		1461	$self->message ($msg, $flags);
		1462	}
		1463	}
		1464
		1465	=item $player_object->may ("access")
		1466
		1467	Returns wether the given player is authorized to access resource "access"
		1468	(e.g. "command_wizcast").
		1469
		1470	=cut
		1471
		1472	sub cf::object::player::may {
		1473	my ($self, $access) = @_;
		1474
		1475	$self->flag (cf::FLAG_WIZ) ||
		1476	(ref $cf::CFG{"may_$access"}
		1477	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1478	: $cf::CFG{"may_$access"})
		1479	}
		1480
		1481	=item $player_object->enter_link
		1482
		1483	Freezes the player and moves him/her to a special map (C<{link}>).
		1484
		1485	The player should be reaosnably safe there for short amounts of time. You
		1486	I<MUST> call C<leave_link> as soon as possible, though.
		1487
		1488	=item $player_object->leave_link ($map, $x, $y)
		1489
		1490	Moves the player out of the specila link map onto the given map. If the
		1491	map is not valid (or omitted), the player will be moved back to the
		1492	location he/she was before the call to C<enter_link>, or, if that fails,
		1493	to the emergency map position.
		1494
		1495	Might block.
		1496
		1497	=cut
		1498
		1499	sub cf::object::player::enter_link {
		1500	my ($self) = @_;
		1501
		1502	$self->deactivate_recursive;
		1503
		1504	return if $self->map == $LINK_MAP;
		1505
		1506	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1507	if $self->map;
		1508
		1509	$self->enter_map ($LINK_MAP, 20, 20);
		1510	}
		1511
		1512	sub cf::object::player::leave_link {
		1513	my ($self, $map, $x, $y) = @_;
		1514
		1515	my $link_pos = delete $self->{_link_pos};
		1516
		1517	unless ($map) {
		1518	# restore original map position
		1519	($map, $x, $y) = @{ $link_pos || [] };
		1520	$map = cf::map::find $map;
		1521
		1522	unless ($map) {
		1523	($map, $x, $y) = @$EMERGENCY_POSITION;
		1524	$map = cf::map::find $map
		1525	or die "FATAL: cannot load emergency map\n";
		1526	}
		1527	}
		1528
		1529	($x, $y) = (-1, -1)
		1530	unless (defined $x) && (defined $y);
		1531
		1532	# use -1 or undef as default coordinates, not 0, 0
		1533	($x, $y) = ($map->enter_x, $map->enter_y)
		1534	if $x <=0 && $y <= 0;
		1535
		1536	$map->load;
		1537
		1538	$self->activate_recursive;
		1539	$self->enter_map ($map, $x, $y);
		1540	}
		1541
		1542	cf::player->attach (
		1543	on_logout => sub {
		1544	my ($pl) = @_;
		1545
		1546	# abort map switching before logout
		1547	if ($pl->ob->{_link_pos}) {
		1548	cf::sync_job {
		1549	$pl->ob->leave_link
		1550	};
		1551	}
		1552	},
		1553	on_login => sub {
		1554	my ($pl) = @_;
		1555
		1556	# try to abort aborted map switching on player login :)
		1557	# should happen only on crashes
		1558	if ($pl->ob->{_link_pos}) {
		1559	$pl->ob->enter_link;
		1560	cf::async {
		1561	# we need this sleep as the login has a concurrent enter_exit running
		1562	# and this sleep increases chances of the player not ending up in scorn
		1563	Coro::Timer::sleep 1;
		1564	$pl->ob->leave_link;
		1565	};
		1566	}
		1567	},
		1568	);
		1569
		1570	=item $player_object->goto ($path, $x, $y)
		1571
		1572	=cut
		1573
		1574	sub cf::object::player::goto {
		1575	my ($self, $path, $x, $y) = @_;
		1576
		1577	$self->enter_link;
		1578
		1579	(cf::async {
		1580	$path = new cf::path $path;
		1581
		1582	my $map = cf::map::find $path->as_string;
		1583	$map = $map->customise_for ($self) if $map;
		1584
		1585	# warn "entering ", $map->path, " at ($x, $y)\n"
		1586	# if $map;
		1587
		1588	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1589
		1590	$self->leave_link ($map, $x, $y);
		1591	})->prio (1);
		1592	}
		1593
		1594	=item $player_object->enter_exit ($exit_object)
		1595
		1596	=cut
		1597
		1598	sub parse_random_map_params {
		1599	my ($spec) = @_;
		1600
		1601	my $rmp = { # defaults
		1602	xsize => 10,
		1603	ysize => 10,
		1604	};
		1605
		1606	for (split /\n/, $spec) {
		1607	my ($k, $v) = split /\s+/, $_, 2;
		1608
		1609	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1610	}
		1611
		1612	$rmp
		1613	}
		1614
		1615	sub prepare_random_map {
		1616	my ($exit) = @_;
		1617
		1618	# all this does is basically replace the /! path by
		1619	# a new random map path (?random/...) with a seed
		1620	# that depends on the exit object
		1621
		1622	my $rmp = parse_random_map_params $exit->msg;
		1623
		1624	if ($exit->map) {
		1625	$rmp->{region} = $exit->map->region_name;
		1626	$rmp->{origin_map} = $exit->map->path;
		1627	$rmp->{origin_x} = $exit->x;
		1628	$rmp->{origin_y} = $exit->y;
		1629	}
		1630
		1631	$rmp->{random_seed} ||= $exit->random_seed;
		1632
		1633	my $data = cf::to_json $rmp;
		1634	my $md5 = Digest::MD5::md5_hex $data;
		1635
		1636	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1637	aio_write $fh, 0, (length $data), $data, 0;
		1638
		1639	$exit->slaying ("?random/$md5");
		1640	$exit->msg (undef);
		1641	}
		1642	}
		1643
		1644	sub cf::object::player::enter_exit {
		1645	my ($self, $exit) = @_;
		1646
		1647	return unless $self->type == cf::PLAYER;
		1648
		1649	$self->enter_link;
		1650
		1651	(cf::async {
		1652	$self->deactivate_recursive; # just to be sure
		1653	unless (eval {
		1654	prepare_random_map $exit
		1655	if $exit->slaying eq "/!";
		1656
		1657	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1658	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1659
		1660	1;
		1661	}) {
		1662	$self->message ("Something went wrong deep within the crossfire server. "
		1663	. "I'll try to bring you back to the map you were before. "
		1664	. "Please report this to the dungeon master",
		1665	cf::NDI_UNIQUE | cf::NDI_RED);
		1666
		1667	warn "ERROR in enter_exit: $@";
		1668	$self->leave_link;
		1669	}
		1670	})->prio (1);
		1671	}
		1672
		1673	=head3 cf::client
		1674
		1675	=over 4
		1676
		1677	=item $client->send_drawinfo ($text, $flags)
		1678
		1679	Sends a drawinfo packet to the client. Circumvents output buffering so
		1680	should not be used under normal circumstances.
		1681
		1682	=cut
		1683
		1684	sub cf::client::send_drawinfo {
		1685	my ($self, $text, $flags) = @_;
		1686
		1687	utf8::encode $text;
		1688	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1689	}
		1690
		1691
		1692	=item $success = $client->query ($flags, "text", \&cb)
		1693
		1694	Queues a query to the client, calling the given callback with
		1695	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1696	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1697
		1698	Queries can fail, so check the return code. Or don't, as queries will become
		1699	reliable at some point in the future.
		1700
		1701	=cut
		1702
		1703	sub cf::client::query {
		1704	my ($self, $flags, $text, $cb) = @_;
		1705
		1706	return unless $self->state == ST_PLAYING
		1707	|| $self->state == ST_SETUP
		1708	|| $self->state == ST_CUSTOM;
		1709
		1710	$self->state (ST_CUSTOM);
		1711
		1712	utf8::encode $text;
		1713	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1714
		1715	$self->send_packet ($self->{query_queue}[0][0])
		1716	if @{ $self->{query_queue} } == 1;
		1717	}
		1718
		1719	cf::client->attach (
		1720	on_reply => sub {
		1721	my ($ns, $msg) = @_;
		1722
		1723	# this weird shuffling is so that direct followup queries
		1724	# get handled first
		1725	my $queue = delete $ns->{query_queue}
		1726	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1727
		1728	(shift @$queue)->[1]->($msg);
		1729
		1730	push @{ $ns->{query_queue} }, @$queue;
		1731
		1732	if (@{ $ns->{query_queue} } == @$queue) {
		1733	if (@$queue) {
		1734	$ns->send_packet ($ns->{query_queue}[0][0]);
		1735	} else {
		1736	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1737	}
		1738	}
		1739	},
		1740	);
		1741
		1742	=item $client->coro (\&cb)
		1743
		1744	Create a new coroutine, running the specified callback. The coroutine will
		1745	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1746	or loss of connection).
		1747
		1748	=cut
		1749
		1750	sub cf::client::coro {
		1751	my ($self, $cb) = @_;
		1752
		1753	my $coro = &cf::async ($cb);
		1754
		1755	$coro->on_destroy (sub {
		1756	delete $self->{_coro}{$coro+0};
		1757	});
		1758
		1759	$self->{_coro}{$coro+0} = $coro;
		1760
		1761	$coro
		1762	}
		1763
		1764	cf::client->attach (
		1765	on_destroy => sub {
		1766	my ($ns) = @_;
		1767
		1768	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1769	},
		1770	);
		1771
		1772	=back
		1773
		1774
		1775	=head2 SAFE SCRIPTING
		1776
		1777	Functions that provide a safe environment to compile and execute
		1778	snippets of perl code without them endangering the safety of the server
		1779	itself. Looping constructs, I/O operators and other built-in functionality
		1780	is not available in the safe scripting environment, and the number of
		1781	functions and methods that can be called is greatly reduced.
		1782
		1783	=cut
		1784
		1785	our $safe = new Safe "safe";
		1786	our $safe_hole = new Safe::Hole;
		1787
		1788	$SIG{FPE} = 'IGNORE';
		1789
		1790	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
		1791
		1792	# here we export the classes and methods available to script code
		1793
		1794	=pod
		1795
		1796	The following fucntions and emthods are available within a safe environment:
		1797
		1798	cf::object contr pay_amount pay_player map
		1799	cf::object::player player
		1800	cf::player peaceful
		1801	cf::map trigger
		1802
		1803	=cut
		1804
		1805	for (
		1806	["cf::object" => qw(contr pay_amount pay_player map)],
		1807	["cf::object::player" => qw(player)],
		1808	["cf::player" => qw(peaceful)],
		1809	["cf::map" => qw(trigger)],
		1810	) {
		1811	no strict 'refs';
		1812	my ($pkg, @funs) = @$_;
		1813	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
		1814	for @funs;
		1815	}
		1816
		1817	=over 4
		1818
		1819	=item @retval = safe_eval $code, [var => value, ...]
		1820
		1821	Compiled and executes the given perl code snippet. additional var/value
		1822	pairs result in temporary local (my) scalar variables of the given name
		1823	that are available in the code snippet. Example:
		1824
		1825	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1826
		1827	=cut
		1828
		1829	sub safe_eval($;@) {
		1830	my ($code, %vars) = @_;
		1831
		1832	my $qcode = $code;
		1833	$qcode =~ s/"/‟/g; # not allowed in #line filenames
		1834	$qcode =~ s/\n/\\n/g;
		1835
		1836	local $_;
		1837	local @safe::cf::_safe_eval_args = values %vars;
		1838
		1839	my $eval =
		1840	"do {\n"
		1841	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
		1842	. "#line 0 \"{$qcode}\"\n"
		1843	. $code
		1844	. "\n}"
		1845	;
		1846
		1847	sub_generation_inc;
		1848	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
		1849	sub_generation_inc;
		1850
		1851	if ($@) {
		1852	warn "$@";
		1853	warn "while executing safe code '$code'\n";
		1854	warn "with arguments " . (join " ", %vars) . "\n";
		1855	}
		1856
		1857	wantarray ? @res : $res[0]
		1858	}
		1859
		1860	=item cf::register_script_function $function => $cb
		1861
		1862	Register a function that can be called from within map/npc scripts. The
		1863	function should be reasonably secure and should be put into a package name
		1864	like the extension.
		1865
		1866	Example: register a function that gets called whenever a map script calls
		1867	C<rent::overview>, as used by the C<rent> extension.
		1868
		1869	cf::register_script_function "rent::overview" => sub {
		1870	...
		1871	};
		1872
		1873	=cut
		1874
		1875	sub register_script_function {
		1876	my ($fun, $cb) = @_;
		1877
		1878	no strict 'refs';
		1879	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		1880	}
		1881
		1882	=back
		1883
		1884	=cut
		1885
		1886	#############################################################################
		1887
		1888	=head2 EXTENSION DATABASE SUPPORT
		1889
		1890	Crossfire maintains a very simple database for extension use. It can
		1891	currently store anything that can be serialised using Storable, which
		1892	excludes objects.
		1893
		1894	The parameter C<$family> should best start with the name of the extension
		1895	using it, it should be unique.
		1896
		1897	=over 4
		1898
		1899	=item $hashref = cf::db_get $family
		1900
		1901	Return a hashref for use by the extension C<$family>, which can be
		1902	modified. After modifications, you have to call C<cf::db_dirty> or
		1903	C<cf::db_sync>.
		1904
		1905	=item $value = cf::db_get $family => $key
		1906
		1907	Returns a single value from the database
		1908
		1909	=item cf::db_put $family => $hashref
		1910
		1911	Stores the given family hashref into the database. Updates are delayed, if
		1912	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1913
		1914	=item cf::db_put $family => $key => $value
		1915
		1916	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1917	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1918
		1919	=item cf::db_dirty
		1920
		1921	Marks the database as dirty, to be updated at a later time.
		1922
		1923	=item cf::db_sync
		1924
		1925	Immediately write the database to disk I<if it is dirty>.
		1926
		1927	=cut
		1928
		1929	our $DB;
		1930
		1931	{
		1932	my $path = cf::localdir . "/database.pst";
		1933
		1934	sub db_load() {
		1935	$DB = stat $path ? Storable::retrieve $path : { };
		1936	}
		1937
		1938	my $pid;
		1939
		1940	sub db_save() {
		1941	waitpid $pid, 0 if $pid;
		1942	if (0 == ($pid = fork)) {
		1943	$DB->{_meta}{version} = 1;
		1944	Storable::nstore $DB, "$path~";
		1945	rename "$path~", $path;
		1946	cf::_exit 0 if defined $pid;
		1947	}
		1948	}
		1949
		1950	my $dirty;
		1951
		1952	sub db_sync() {
		1953	db_save if $dirty;
		1954	undef $dirty;
		1955	}
		1956
		1957	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1958	db_sync;
		1959	});
		1960
		1961	sub db_dirty() {
		1962	$dirty = 1;
		1963	$idle->start;
		1964	}
		1965
		1966	sub db_get($;$) {
		1967	@_ >= 2
		1968	? $DB->{$_[0]}{$_[1]}
		1969	: ($DB->{$_[0]} ||= { })
		1970	}
		1971
		1972	sub db_put($$;$) {
		1973	if (@_ >= 3) {
		1974	$DB->{$_[0]}{$_[1]} = $_[2];
		1975	} else {
		1976	$DB->{$_[0]} = $_[1];
		1977	}
		1978	db_dirty;
		1979	}
		1980
		1981	cf::global->attach (
		1982	prio => 10000,
		1983	on_cleanup => sub {
		1984	db_sync;
		1985	},
		1986	);
		1987	}
		1988
		1989	#############################################################################
		1990	# the server's main()
		1991
		1992	sub cfg_load {
		1993	open my $fh, "<:utf8", cf::confdir . "/config"
		1994	or return;
		1995
		1996	local $/;
		1997	*CFG = YAML::Syck::Load <$fh>;
		1998
		1999	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2000
		2001	if (exists $CFG{mlockall}) {
		2002	eval {
		2003	$CFG{mlockall} ? &mlockall : &munlockall
		2004	and die "WARNING: m(un)lockall failed: $!\n";
		2005	};
		2006	warn $@ if $@;
		2007	}
		2008	}
		2009
		2010	sub main {
		2011	# we must not ever block the main coroutine
		2012	local $Coro::idle = sub {
		2013	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2014	(Coro::unblock_sub {
		2015	Event::one_event;
		2016	})->();
		2017	};
		2018
		2019	cfg_load;
		2020	db_load;
		2021	load_extensions;
		2022	Event::loop;
		2023	}
		2024
		2025	#############################################################################
		2026	# initialisation
		2027
		2028	sub reload() {
		2029	# can/must only be called in main
		2030	if ($Coro::current != $Coro::main) {
		2031	warn "can only reload from main coroutine\n";
		2032	return;
		2033	}
		2034
		2035	warn "reloading...";
		2036
		2037	my $guard = freeze_mainloop;
		2038	cf::emergency_save;
		2039
		2040	eval {
		2041	# if anything goes wrong in here, we should simply crash as we already saved
		2042
		2043	# cancel all watchers
		2044	for (Event::all_watchers) {
		2045	$_->cancel if $_->data & WF_AUTOCANCEL;
		2046	}
		2047
		2048	# cancel all extension coros
		2049	$_->cancel for values %EXT_CORO;
		2050	%EXT_CORO = ();
		2051
		2052	# unload all extensions
		2053	for (@exts) {
		2054	warn "unloading <$_>";
		2055	unload_extension $_;
		2056	}
		2057
		2058	# unload all modules loaded from $LIBDIR
		2059	while (my ($k, $v) = each %INC) {
		2060	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2061
		2062	warn "removing <$k>";
		2063	delete $INC{$k};
		2064
		2065	$k =~ s/\.pm$//;
		2066	$k =~ s/\//::/g;
		2067
		2068	if (my $cb = $k->can ("unload_module")) {
		2069	$cb->();
		2070	}
		2071
		2072	Symbol::delete_package $k;
		2073	}
		2074
		2075	# sync database to disk
		2076	cf::db_sync;
		2077	IO::AIO::flush;
		2078
		2079	# get rid of safe::, as good as possible
		2080	Symbol::delete_package "safe::$_"
		2081	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2082
		2083	# remove register_script_function callbacks
		2084	# TODO
		2085
		2086	# unload cf.pm "a bit"
		2087	delete $INC{"cf.pm"};
		2088
		2089	# don't, removes xs symbols, too,
		2090	# and global variables created in xs
		2091	#Symbol::delete_package __PACKAGE__;
		2092
		2093	# reload cf.pm
		2094	warn "reloading cf.pm";
		2095	require cf;
		2096	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2097
		2098	# load config and database again
		2099	cf::cfg_load;
		2100	cf::db_load;
		2101
		2102	# load extensions
		2103	warn "load extensions";
		2104	cf::load_extensions;
		2105
		2106	# reattach attachments to objects
		2107	warn "reattach";
		2108	_global_reattach;
		2109	};
		2110
		2111	if ($@) {
		2112	warn $@;
		2113	warn "error while reloading, exiting.";
		2114	exit 1;
		2115	}
		2116
		2117	warn "reloaded successfully";
		2118	};
		2119
		2120	#############################################################################
		2121
		2122	unless ($LINK_MAP) {
		2123	$LINK_MAP = cf::map::new;
		2124
		2125	$LINK_MAP->width (41);
		2126	$LINK_MAP->height (41);
		2127	$LINK_MAP->alloc;
		2128	$LINK_MAP->path ("{link}");
		2129	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2130	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2131
		2132	# dirty hack because... archetypes are not yet loaded
		2133	Event->timer (
		2134	after => 2,
		2135	cb => sub {
		2136	$_[0]->w->cancel;
		2137
		2138	# provide some exits "home"
		2139	my $exit = cf::object::new "exit";
		2140
		2141	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2142	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2143	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2144
		2145	$LINK_MAP->insert ($exit->clone, 19, 19);
		2146	$LINK_MAP->insert ($exit->clone, 19, 20);
		2147	$LINK_MAP->insert ($exit->clone, 19, 21);
		2148	$LINK_MAP->insert ($exit->clone, 20, 19);
		2149	$LINK_MAP->insert ($exit->clone, 20, 21);
		2150	$LINK_MAP->insert ($exit->clone, 21, 19);
		2151	$LINK_MAP->insert ($exit->clone, 21, 20);
		2152	$LINK_MAP->insert ($exit->clone, 21, 21);
		2153
		2154	$exit->destroy;
		2155	});
		2156
		2157	$LINK_MAP->{deny_save} = 1;
		2158	$LINK_MAP->{deny_reset} = 1;
		2159
		2160	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2161	}
		2162
		2163	register "<global>", __PACKAGE__;
		2164
171	register_command "perl-reload", 0, sub {	2165	register_command "reload" => sub {
172	my ($who, $arg) = @_;	2166	my ($who, $arg) = @_;
173		2167
174	if ($who->flag (FLAG_WIZ)) {	2168	if ($who->flag (FLAG_WIZ)) {
175	$who->message ("reloading...");	2169	$who->message ("start of reload.");
176		2170	reload;
177	warn "reloading...\n";
178	unload_extension $_ for @exts;
179	@exts = 0;
180	load_extensions;
181	warn "reloaded\n";
182
183	$who->message ("reloaded");	2171	$who->message ("end of reload.");
184	} else {
185	$who->message ("Intruder Alert!");
186	}	2172	}
187	};	2173	};
188		2174
189	load_extensions;	2175	unshift @INC, $LIBDIR;
		2176
		2177	$TICK_WATCHER = Event->timer (
		2178	reentrant => 0,
		2179	prio => 0,
		2180	at => $NEXT_TICK || $TICK,
		2181	data => WF_AUTOCANCEL,
		2182	cb => sub {
		2183	cf::server_tick; # one server iteration
		2184	$RUNTIME += $TICK;
		2185	$NEXT_TICK += $TICK;
		2186
		2187	# if we are delayed by four ticks or more, skip them all
		2188	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
		2189
		2190	$TICK_WATCHER->at ($NEXT_TICK);
		2191	$TICK_WATCHER->start;
		2192	},
		2193	);
		2194
		2195	IO::AIO::max_poll_time $TICK * 0.2;
		2196
		2197	Event->io (
		2198	fd => IO::AIO::poll_fileno,
		2199	poll => 'r',
		2200	prio => 5,
		2201	data => WF_AUTOCANCEL,
		2202	cb => \&IO::AIO::poll_cb,
		2203	);
		2204
		2205	Event->timer (
		2206	data => WF_AUTOCANCEL,
		2207	after => 0,
		2208	interval => 10,
		2209	cb => sub {
		2210	(Coro::unblock_sub {
		2211	write_runtime
		2212	or warn "ERROR: unable to write runtime file: $!";
		2213	})->();
		2214	},
		2215	);
		2216
		2217	END { cf::emergency_save }
190		2218
191	1	2219	1
192		2220

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