ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/deliantra/server/lib/cf.pm

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.3 by root, Sat Feb 4 20:38:29 2006 UTC vs.
Revision 1.132 by root, Thu Jan 4 01:35:56 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 $FREEZE;
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO;
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76	our $EMERGENCY_POSITION;
		77
		78	#############################################################################
		79
		80	=head2 GLOBAL VARIABLES
		81
		82	=over 4
		83
		84	=item $cf::UPTIME
		85
		86	The timestamp of the server start (so not actually an uptime).
		87
		88	=item $cf::RUNTIME
		89
		90	The time this server has run, starts at 0 and is increased by $cf::TICK on
		91	every server tick.
		92
		93	=item $cf::LIBDIR
		94
		95	The perl library directory, where extensions and cf-specific modules can
		96	be found. It will be added to C<@INC> automatically.
		97
		98	=item $cf::NOW
		99
		100	The time of the last (current) server tick.
		101
		102	=item $cf::TICK
		103
		104	The interval between server ticks, in seconds.
		105
		106	=item %cf::CFG
		107
		108	Configuration for the server, loaded from C</etc/crossfire/config>, or
		109	from wherever your confdir points to.
		110
		111	=back
		112
		113	=cut
12		114
13	BEGIN {	115	BEGIN {
14	@EVENT = map lc, @EVENT;
15
16	*CORE::GLOBAL::warn = sub {	116	*CORE::GLOBAL::warn = sub {
17	my $msg = join "", @_;	117	my $msg = join "", @_;
		118	utf8::encode $msg;
		119
18	$msg .= "\n"	120	$msg .= "\n"
19	unless $msg =~ /\n$/;	121	unless $msg =~ /\n$/;
20		122
21	print STDERR "cfperl: $msg";
22	LOG llevError, "cfperl: $msg";	123	LOG llevError, "cfperl: $msg";
23	};	124	};
24	}	125	}
25		126
26	# generate property mutators	127	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
27	sub prop_gen {	128	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
28	my ($prefix, $class) = @_;	129	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		130	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		131	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		132	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
29		133
		134	# we bless all objects into (empty) derived classes to force a method lookup
		135	# within the Safe compartment.
		136	for my $pkg (qw(
		137	cf::global cf::attachable
		138	cf::object cf::object::player
		139	cf::client cf::player
		140	cf::arch cf::living
		141	cf::map cf::party cf::region
		142	)) {
30	no strict 'refs';	143	no strict 'refs';
31		144	@{"safe::$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	}	145	}
48		146
49	# auto-generate most of the API	147	$Event::DIED = sub {
		148	warn "error in event callback: @_";
		149	};
50		150
51	prop_gen OBJECT_PROP => "cf::object";	151	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;	152	my @exts;
64	my @hook;	153	my @hook;
65	my %command;
66		154
67	sub inject_event {	155	=head2 UTILITY FUNCTIONS
		156
		157	=over 4
		158
		159	=cut
		160
		161	use JSON::Syck (); # TODO# replace by JSON::PC once working
		162
		163	=item $ref = cf::from_json $json
		164
		165	Converts a JSON string into the corresponding perl data structure.
		166
		167	=cut
		168
		169	sub from_json($) {
		170	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		171	JSON::Syck::Load $_[0]
		172	}
		173
		174	=item $json = cf::to_json $ref
		175
		176	Converts a perl data structure into its JSON representation.
		177
		178	=cut
		179
		180	sub to_json($) {
		181	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		182	JSON::Syck::Dump $_[0]
		183	}
		184
		185	=item my $guard = cf::guard { BLOCK }
		186
		187	Run the given callback when the guard object gets destroyed (useful for
		188	coroutine cancellations).
		189
		190	You can call C<< ->cancel >> on the guard object to stop the block from
		191	being executed.
		192
		193	=cut
		194
		195	sub guard(&) {
		196	bless \(my $cb = $_[0]), cf::guard::;
		197	}
		198
		199	sub cf::guard::cancel {
		200	${$_[0]} = sub { };
		201	}
		202
		203	sub cf::guard::DESTROY {
		204	${$_[0]}->();
		205	}
		206
		207	=item cf::lock_wait $string
		208
		209	Wait until the given lock is available. See cf::lock_acquire.
		210
		211	=item my $lock = cf::lock_acquire $string
		212
		213	Wait until the given lock is available and then acquires it and returns
		214	a guard object. If the guard object gets destroyed (goes out of scope,
		215	for example when the coroutine gets canceled), the lock is automatically
		216	returned.
		217
		218	Lock names should begin with a unique identifier (for example, find_map
		219	uses map_find and load_map uses map_load).
		220
		221	=cut
		222
		223	our %LOCK;
		224
		225	sub lock_wait($) {
		226	my ($key) = @_;
		227
		228	# wait for lock, if any
		229	while ($LOCK{$key}) {
		230	push @{ $LOCK{$key} }, $Coro::current;
		231	Coro::schedule;
		232	}
		233	}
		234
		235	sub lock_acquire($) {
		236	my ($key) = @_;
		237
		238	# wait, to be sure we are not locked
		239	lock_wait $key;
		240
		241	$LOCK{$key} = [];
		242
		243	cf::guard {
		244	# wake up all waiters, to be on the safe side
		245	$_->ready for @{ delete $LOCK{$key} };
		246	}
		247	}
		248
		249	=item cf::async { BLOCK }
		250
		251	Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
		252	error instead of exiting the server in case of a problem.
		253
		254	=cut
		255
		256	sub async(&) {
68	my ($data) = @_;	257	my ($cb) = @_;
69		258
70	my $cb = $hook[$data->{event_code}]	259	Coro::async {
		260	eval { $cb->() };
		261	warn $@ if $@;
		262	}
		263	}
		264
		265	=item cf::sync_job { BLOCK }
		266
		267	The design of crossfire+ requires that the main coro ($Coro::main) is
		268	always able to handle events or runnable, as crossfire+ is only partly
		269	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		270
		271	If it must be done, put the blocking parts into C<sync_job>. This will run
		272	the given BLOCK in another coroutine while waiting for the result. The
		273	server will be frozen during this time, so the block should either finish
		274	fast or be very important.
		275
		276	=cut
		277
		278	sub sync_job(&) {
		279	my ($job) = @_;
		280
		281	if ($Coro::current == $Coro::main) {
		282	# this is the main coro, too bad, we have to block
		283	# till the operation succeeds, freezing the server :/
		284
		285	# TODO: use suspend/resume instead
		286	# (but this is cancel-safe)
		287	local $FREEZE = 1;
		288
		289	my $busy = 1;
		290	my @res;
		291
		292	(Coro::async {
		293	@res = eval { $job->() };
		294	warn $@ if $@;
		295	undef $busy;
		296	})->prio (Coro::PRIO_MAX);
		297
		298	while ($busy) {
		299	Coro::cede_notself;
		300	Event::one_event unless Coro::nready;
		301	}
		302
		303	wantarray ? @res : $res[0]
		304	} else {
		305	# we are in another coroutine, how wonderful, everything just works
		306
		307	$job->()
		308	}
		309	}
		310
		311	=item $coro = cf::coro { BLOCK }
		312
		313	Creates and returns a new coro. This coro is automcatially being canceled
		314	when the extension calling this is being unloaded.
		315
		316	=cut
		317
		318	sub coro(&) {
		319	my $cb = shift;
		320
		321	my $coro = &cf::async ($cb);
		322
		323	$coro->on_destroy (sub {
		324	delete $EXT_CORO{$coro+0};
		325	});
		326	$EXT_CORO{$coro+0} = $coro;
		327
		328	$coro
		329	}
		330
		331	sub write_runtime {
		332	my $runtime = cf::localdir . "/runtime";
		333
		334	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
71	or return;	335	or return;
72		336
73	$_->($data) for values %$cb;	337	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		338	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		339	and return;
74		340
75	()	341	aio_fsync $fh
76	}	342	and return;
77		343
78	sub inject_command {	344	close $fh
79	my ($name, $obj, $params) = @_;	345	or return;
80		346
81	for my $cmd (@{ $command{$name} }) {	347	aio_rename "$runtime~", $runtime
82	$cmd->[1]->($obj, $params);	348	and return;
83	}
84		349
85	-1	350	1
86	}	351	}
		352
		353	=back
		354
		355	=cut
		356
		357	#############################################################################
		358
		359	package cf::path;
		360
		361	sub new {
		362	my ($class, $path, $base) = @_;
		363
		364	$path = $path->as_string if ref $path;
		365
		366	my $self = bless { }, $class;
		367
		368	# {... are special paths that are not touched
		369	# ?xxx/... are special absolute paths
		370	# ?random/... random maps
		371	# /! non-realised random map exit
		372	# /... normal maps
		373	# ~/... per-player maps without a specific player (DO NOT USE)
		374	# ~user/... per-player map of a specific user
		375
		376	if ($path =~ /^{/) {
		377	# fine as it is
		378	} elsif ($path =~ s{^\?random/}{}) {
		379	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		380	$self->{random} = cf::from_json $data;
		381	} else {
		382	if ($path =~ s{^~([^/]+)?}{}) {
		383	$self->{user_rel} = 1;
		384
		385	if (defined $1) {
		386	$self->{user} = $1;
		387	} elsif ($base =~ m{^~([^/]+)/}) {
		388	$self->{user} = $1;
		389	} else {
		390	warn "cannot resolve user-relative path without user <$path,$base>\n";
		391	}
		392	} elsif ($path =~ /^\//) {
		393	# already absolute
		394	} else {
		395	$base =~ s{[^/]+/?$}{};
		396	return $class->new ("$base/$path");
		397	}
		398
		399	for ($path) {
		400	redo if s{/\.?/}{/};
		401	redo if s{/[^/]+/\.\./}{/};
		402	}
		403	}
		404
		405	$self->{path} = $path;
		406
		407	$self
		408	}
		409
		410	# the name / primary key / in-game path
		411	sub as_string {
		412	my ($self) = @_;
		413
		414	$self->{user_rel} ? "~$self->{user}$self->{path}"
		415	: $self->{random} ? "?random/$self->{path}"
		416	: $self->{path}
		417	}
		418
		419	# the displayed name, this is a one way mapping
		420	sub visible_name {
		421	my ($self) = @_;
		422
		423	# if (my $rmp = $self->{random}) {
		424	# # todo: be more intelligent about this
		425	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		426	# } else {
		427	$self->as_string
		428	# }
		429	}
		430
		431	# escape the /'s in the path
		432	sub _escaped_path {
		433	# ∕ is U+2215
		434	(my $path = $_[0]{path}) =~ s/\//∕/g;
		435	$path
		436	}
		437
		438	# the original (read-only) location
		439	sub load_path {
		440	my ($self) = @_;
		441
		442	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		443	}
		444
		445	# the temporary/swap location
		446	sub save_path {
		447	my ($self) = @_;
		448
		449	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		450	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		451	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		452	}
		453
		454	# the unique path, might be eq to save_path
		455	sub uniq_path {
		456	my ($self) = @_;
		457
		458	$self->{user_rel} || $self->{random}
		459	? undef
		460	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		461	}
		462
		463	# return random map parameters, or undef
		464	sub random_map_params {
		465	my ($self) = @_;
		466
		467	$self->{random}
		468	}
		469
		470	# this is somewhat ugly, but style maps do need special treatment
		471	sub is_style_map {
		472	$_[0]{path} =~ m{^/styles/}
		473	}
		474
		475	package cf;
		476
		477	#############################################################################
		478
		479	=head2 ATTACHABLE OBJECTS
		480
		481	Many objects in crossfire are so-called attachable objects. That means you can
		482	attach callbacks/event handlers (a collection of which is called an "attachment")
		483	to it. All such attachable objects support the following methods.
		484
		485	In the following description, CLASS can be any of C<global>, C<object>
		486	C<player>, C<client> or C<map> (i.e. the attachable objects in
		487	crossfire+).
		488
		489	=over 4
		490
		491	=item $attachable->attach ($attachment, key => $value...)
		492
		493	=item $attachable->detach ($attachment)
		494
		495	Attach/detach a pre-registered attachment to a specific object and give it
		496	the specified key/value pairs as arguments.
		497
		498	Example, attach a minesweeper attachment to the given object, making it a
		499	10x10 minesweeper game:
		500
		501	$obj->attach (minesweeper => width => 10, height => 10);
		502
		503	=item $bool = $attachable->attached ($name)
		504
		505	Checks wether the named attachment is currently attached to the object.
		506
		507	=item cf::CLASS->attach ...
		508
		509	=item cf::CLASS->detach ...
		510
		511	Define an anonymous attachment and attach it to all objects of the given
		512	CLASS. See the next function for an explanation of its arguments.
		513
		514	You can attach to global events by using the C<cf::global> class.
		515
		516	Example, log all player logins:
		517
		518	cf::player->attach (
		519	on_login => sub {
		520	my ($pl) = @_;
		521	...
		522	},
		523	);
		524
		525	Example, attach to the jeweler skill:
		526
		527	cf::object->attach (
		528	type => cf::SKILL,
		529	subtype => cf::SK_JEWELER,
		530	on_use_skill => sub {
		531	my ($sk, $ob, $part, $dir, $msg) = @_;
		532	...
		533	},
		534	);
		535
		536	=item cf::CLASS::attachment $name, ...
		537
		538	Register an attachment by C<$name> through which attachable objects of the
		539	given CLASS can refer to this attachment.
		540
		541	Some classes such as crossfire maps and objects can specify attachments
		542	that are attached at load/instantiate time, thus the need for a name.
		543
		544	These calls expect any number of the following handler/hook descriptions:
		545
		546	=over 4
		547
		548	=item prio => $number
		549
		550	Set the priority for all following handlers/hooks (unless overwritten
		551	by another C<prio> setting). Lower priority handlers get executed
		552	earlier. The default priority is C<0>, and many built-in handlers are
		553	registered at priority C<-1000>, so lower priorities should not be used
		554	unless you know what you are doing.
		555
		556	=item type => $type
		557
		558	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		559	given type of objects only (the additional parameter C<subtype> can be
		560	used to further limit to the given subtype).
		561
		562	=item on_I<event> => \&cb
		563
		564	Call the given code reference whenever the named event happens (event is
		565	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		566	handlers are recognised generally depends on the type of object these
		567	handlers attach to).
		568
		569	See F<include/eventinc.h> for the full list of events supported, and their
		570	class.
		571
		572	=item package => package::
		573
		574	Look for sub functions of the name C<< on_I<event> >> in the given
		575	package and register them. Only handlers for eevents supported by the
		576	object/class are recognised.
		577
		578	=back
		579
		580	Example, define an attachment called "sockpuppet" that calls the given
		581	event handler when a monster attacks:
		582
		583	cf::object::attachment sockpuppet =>
		584	on_skill_attack => sub {
		585	my ($self, $victim) = @_;
		586	...
		587	}
		588	}
		589
		590	=item $attachable->valid
		591
		592	Just because you have a perl object does not mean that the corresponding
		593	C-level object still exists. If you try to access an object that has no
		594	valid C counterpart anymore you get an exception at runtime. This method
		595	can be used to test for existence of the C object part without causing an
		596	exception.
		597
		598	=cut
		599
		600	# the following variables are defined in .xs and must not be re-created
		601	our @CB_GLOBAL = (); # registry for all global events
		602	our @CB_ATTACHABLE = (); # registry for all attachables
		603	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		604	our @CB_PLAYER = ();
		605	our @CB_CLIENT = ();
		606	our @CB_TYPE = (); # registry for type (cf-object class) based events
		607	our @CB_MAP = ();
		608
		609	my %attachment;
		610
		611	sub _attach_cb($$$$) {
		612	my ($registry, $event, $prio, $cb) = @_;
		613
		614	use sort 'stable';
		615
		616	$cb = [$prio, $cb];
		617
		618	@{$registry->[$event]} = sort
		619	{ $a->[0] cmp $b->[0] }
		620	@{$registry->[$event] || []}, $cb;
		621	}
		622
		623	# hack
		624	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		625
		626	# attach handles attaching event callbacks
		627	# the only thing the caller has to do is pass the correct
		628	# registry (== where the callback attaches to).
		629	sub _attach {
		630	my ($registry, $klass, @arg) = @_;
		631
		632	my $object_type;
		633	my $prio = 0;
		634	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		635
		636	#TODO: get rid of this hack
		637	if ($attachable_klass{$klass}) {
		638	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		639	}
		640
		641	while (@arg) {
		642	my $type = shift @arg;
		643
		644	if ($type eq "prio") {
		645	$prio = shift @arg;
		646
		647	} elsif ($type eq "type") {
		648	$object_type = shift @arg;
		649	$registry = $CB_TYPE[$object_type] ||= [];
		650
		651	} elsif ($type eq "subtype") {
		652	defined $object_type or Carp::croak "subtype specified without type";
		653	my $object_subtype = shift @arg;
		654	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		655
		656	} elsif ($type eq "package") {
		657	my $pkg = shift @arg;
		658
		659	while (my ($name, $id) = each %cb_id) {
		660	if (my $cb = $pkg->can ($name)) {
		661	_attach_cb $registry, $id, $prio, $cb;
		662	}
		663	}
		664
		665	} elsif (exists $cb_id{$type}) {
		666	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		667
		668	} elsif (ref $type) {
		669	warn "attaching objects not supported, ignoring.\n";
		670
		671	} else {
		672	shift @arg;
		673	warn "attach argument '$type' not supported, ignoring.\n";
		674	}
		675	}
		676	}
		677
		678	sub _object_attach {
		679	my ($obj, $name, %arg) = @_;
		680
		681	return if exists $obj->{_attachment}{$name};
		682
		683	if (my $attach = $attachment{$name}) {
		684	my $registry = $obj->registry;
		685
		686	for (@$attach) {
		687	my ($klass, @attach) = @$_;
		688	_attach $registry, $klass, @attach;
		689	}
		690
		691	$obj->{$name} = \%arg;
		692	} else {
		693	warn "object uses attachment '$name' that is not available, postponing.\n";
		694	}
		695
		696	$obj->{_attachment}{$name} = undef;
		697	}
		698
		699	sub cf::attachable::attach {
		700	if (ref $_[0]) {
		701	_object_attach @_;
		702	} else {
		703	_attach shift->_attach_registry, @_;
		704	}
		705	};
		706
		707	# all those should be optimised
		708	sub cf::attachable::detach {
		709	my ($obj, $name) = @_;
		710
		711	if (ref $obj) {
		712	delete $obj->{_attachment}{$name};
		713	reattach ($obj);
		714	} else {
		715	Carp::croak "cannot, currently, detach class attachments";
		716	}
		717	};
		718
		719	sub cf::attachable::attached {
		720	my ($obj, $name) = @_;
		721
		722	exists $obj->{_attachment}{$name}
		723	}
		724
		725	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		726	eval "#line " . __LINE__ . " 'cf.pm'
		727	sub cf::\L$klass\E::_attach_registry {
		728	(\\\@CB_$klass, KLASS_$klass)
		729	}
		730
		731	sub cf::\L$klass\E::attachment {
		732	my \$name = shift;
		733
		734	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		735	}
		736	";
		737	die if $@;
		738	}
		739
		740	our $override;
		741	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		742
		743	sub override {
		744	$override = 1;
		745	@invoke_results = ();
		746	}
		747
		748	sub do_invoke {
		749	my $event = shift;
		750	my $callbacks = shift;
		751
		752	@invoke_results = ();
		753
		754	local $override;
		755
		756	for (@$callbacks) {
		757	eval { &{$_->[1]} };
		758
		759	if ($@) {
		760	warn "$@";
		761	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		762	override;
		763	}
		764
		765	return 1 if $override;
		766	}
		767
		768	0
		769	}
		770
		771	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		772
		773	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		774
		775	Generate an object-specific event with the given arguments.
		776
		777	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		778	removed in future versions), and there is no public API to access override
		779	results (if you must, access C<@cf::invoke_results> directly).
		780
		781	=back
		782
		783	=cut
		784
		785	#############################################################################
		786	# object support
		787
		788	sub reattach {
		789	# basically do the same as instantiate, without calling instantiate
		790	my ($obj) = @_;
		791
		792	my $registry = $obj->registry;
		793
		794	@$registry = ();
		795
		796	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		797
		798	for my $name (keys %{ $obj->{_attachment} || {} }) {
		799	if (my $attach = $attachment{$name}) {
		800	for (@$attach) {
		801	my ($klass, @attach) = @$_;
		802	_attach $registry, $klass, @attach;
		803	}
		804	} else {
		805	warn "object uses attachment '$name' that is not available, postponing.\n";
		806	}
		807	}
		808	}
		809
		810	cf::attachable->attach (
		811	prio => -1000000,
		812	on_instantiate => sub {
		813	my ($obj, $data) = @_;
		814
		815	$data = from_json $data;
		816
		817	for (@$data) {
		818	my ($name, $args) = @$_;
		819
		820	$obj->attach ($name, %{$args || {} });
		821	}
		822	},
		823	on_reattach => \&reattach,
		824	on_clone => sub {
		825	my ($src, $dst) = @_;
		826
		827	@{$dst->registry} = @{$src->registry};
		828
		829	%$dst = %$src;
		830
		831	%{$dst->{_attachment}} = %{$src->{_attachment}}
		832	if exists $src->{_attachment};
		833	},
		834	);
		835
		836	sub object_freezer_save {
		837	my ($filename, $rdata, $objs) = @_;
		838
		839	sync_job {
		840	if (length $$rdata) {
		841	warn sprintf "saving %s (%d,%d)\n",
		842	$filename, length $$rdata, scalar @$objs;
		843
		844	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		845	chmod SAVE_MODE, $fh;
		846	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		847	aio_fsync $fh;
		848	close $fh;
		849
		850	if (@$objs) {
		851	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		852	chmod SAVE_MODE, $fh;
		853	my $data = Storable::nfreeze { version => 1, objs => $objs };
		854	aio_write $fh, 0, (length $data), $data, 0;
		855	aio_fsync $fh;
		856	close $fh;
		857	aio_rename "$filename.pst~", "$filename.pst";
		858	}
		859	} else {
		860	aio_unlink "$filename.pst";
		861	}
		862
		863	aio_rename "$filename~", $filename;
		864	} else {
		865	warn "FATAL: $filename~: $!\n";
		866	}
		867	} else {
		868	aio_unlink $filename;
		869	aio_unlink "$filename.pst";
		870	}
		871	}
		872	}
		873
		874	sub object_freezer_as_string {
		875	my ($rdata, $objs) = @_;
		876
		877	use Data::Dumper;
		878
		879	$$rdata . Dumper $objs
		880	}
		881
		882	sub object_thawer_load {
		883	my ($filename) = @_;
		884
		885	my ($data, $av);
		886
		887	(aio_load $filename, $data) >= 0
		888	or return;
		889
		890	unless (aio_stat "$filename.pst") {
		891	(aio_load "$filename.pst", $av) >= 0
		892	or return;
		893	$av = eval { (Storable::thaw $av)->{objs} };
		894	}
		895
		896	warn sprintf "loading %s (%d)\n",
		897	$filename, length $data, scalar @{$av || []};#d#
		898	return ($data, $av);
		899	}
		900
		901	#############################################################################
		902	# command handling &c
		903
		904	=item cf::register_command $name => \&callback($ob,$args);
		905
		906	Register a callback for execution when the client sends the user command
		907	$name.
		908
		909	=cut
87		910
88	sub register_command {	911	sub register_command {
89	my ($name, $time, $cb) = @_;	912	my ($name, $cb) = @_;
90		913
91	my $caller = caller;	914	my $caller = caller;
		915	#warn "registering command '$name/$time' to '$caller'";
92		916
93	push @{ $command{$name} }, [$time, $cb, $caller];	917	push @{ $COMMAND{$name} }, [$caller, $cb];
94	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };	918	}
		919
		920	=item cf::register_extcmd $name => \&callback($pl,$packet);
		921
		922	Register a callbackf ro execution when the client sends an extcmd packet.
		923
		924	If the callback returns something, it is sent back as if reply was being
		925	called.
		926
		927	=cut
		928
		929	sub register_extcmd {
		930	my ($name, $cb) = @_;
		931
		932	my $caller = caller;
		933	#warn "registering extcmd '$name' to '$caller'";
		934
		935	$EXTCMD{$name} = [$cb, $caller];
		936	}
		937
		938	cf::player->attach (
		939	on_command => sub {
		940	my ($pl, $name, $params) = @_;
		941
		942	my $cb = $COMMAND{$name}
		943	or return;
		944
		945	for my $cmd (@$cb) {
		946	$cmd->[1]->($pl->ob, $params);
		947	}
		948
		949	cf::override;
		950	},
		951	on_extcmd => sub {
		952	my ($pl, $buf) = @_;
		953
		954	my $msg = eval { from_json $buf };
		955
		956	if (ref $msg) {
		957	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		958	if (my %reply = $cb->[0]->($pl, $msg)) {
		959	$pl->ext_reply ($msg->{msgid}, %reply);
		960	}
		961	}
		962	} else {
		963	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		964	}
		965
		966	cf::override;
		967	},
		968	);
		969
		970	sub register {
		971	my ($base, $pkg) = @_;
		972
		973	#TODO
95	}	974	}
96		975
97	sub load_extension {	976	sub load_extension {
98	my ($path) = @_;	977	my ($path) = @_;
99		978
100	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	979	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		980	my $base = $1;
101	my $pkg = $1;	981	my $pkg = $1;
102	$pkg =~ s/[^[:word:]]/_/g;	982	$pkg =~ s/[^[:word:]]/_/g;
103	$pkg = "cf::ext::$pkg";	983	$pkg = "ext::$pkg";
104		984
105	warn "loading '$path' into '$pkg'\n";	985	warn "loading '$path' into '$pkg'\n";
106		986
107	open my $fh, "<:utf8", $path	987	open my $fh, "<:utf8", $path
108	or die "$path: $!";	988	or die "$path: $!";
…		…
112	. "#line 1 \"$path\"\n{\n"	992	. "#line 1 \"$path\"\n{\n"
113	. (do { local $/; <$fh> })	993	. (do { local $/; <$fh> })
114	. "\n};\n1";	994	. "\n};\n1";
115		995
116	eval $source	996	eval $source
117	or die "$path: $@";	997	or die $@ ? "$path: $@\n"
		998	: "extension disabled.\n";
118		999
119	push @exts, $pkg;	1000	push @exts, $pkg;
		1001	$ext_pkg{$base} = $pkg;
120		1002
121	no strict 'refs';	1003	# no strict 'refs';
122
123	# @{"$pkg\::ISA"} = cf::ext::;	1004	# @{"$pkg\::ISA"} = ext::;
124		1005
125	for my $idx (0 .. $#EVENT) {	1006	register $base, $pkg;
126	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
127	warn "registering $EVENT[$idx] hook\n";
128	$hook[$idx]{$pkg} = $ref;
129	}
130	}
131	}	1007	}
132		1008
133	sub unload_extension {	1009	sub unload_extension {
134	my ($pkg) = @_;	1010	my ($pkg) = @_;
135		1011
136	warn "removing extension $pkg\n";	1012	warn "removing extension $pkg\n";
137		1013
138	# remove hooks	1014	# remove hooks
		1015	#TODO
139	for my $idx (0 .. $#EVENT) {	1016	# for my $idx (0 .. $#PLUGIN_EVENT) {
140	delete $hook[$idx]{$pkg};	1017	# delete $hook[$idx]{$pkg};
141	}	1018	# }
142		1019
143	# remove commands	1020	# remove commands
144	for my $name (keys %command) {	1021	for my $name (keys %COMMAND) {
145	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1022	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
146		1023
147	if (@cb) {	1024	if (@cb) {
148	$command{$name} = \@cb;	1025	$COMMAND{$name} = \@cb;
149	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
150	} else {	1026	} else {
151	delete $command{$name};
152	delete $COMMAND{"$name\000"};	1027	delete $COMMAND{$name};
153	}	1028	}
		1029	}
		1030
		1031	# remove extcmds
		1032	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
		1033	delete $EXTCMD{$name};
		1034	}
		1035
		1036	if (my $cb = $pkg->can ("unload")) {
		1037	eval {
		1038	$cb->($pkg);
		1039	1
		1040	} or warn "$pkg unloaded, but with errors: $@";
154	}	1041	}
155		1042
156	Symbol::delete_package $pkg;	1043	Symbol::delete_package $pkg;
157	}	1044	}
158		1045
159	sub load_extensions {	1046	sub load_extensions {
160	my $LIBDIR = maps_directory "perl";
161
162	for my $ext (<$LIBDIR/*.ext>) {	1047	for my $ext (<$LIBDIR/*.ext>) {
163	next unless -r $ext;	1048	next unless -r $ext;
164	eval {	1049	eval {
165	load_extension $ext;	1050	load_extension $ext;
166	1	1051	1
167	} or warn "$ext not loaded: $@";	1052	} or warn "$ext not loaded: $@";
168	}	1053	}
169	}	1054	}
170		1055
		1056	#############################################################################
		1057	# load/save/clean perl data associated with a map
		1058
		1059	*cf::mapsupport::on_clean = sub {
		1060	my ($map) = @_;
		1061
		1062	my $path = $map->tmpname;
		1063	defined $path or return;
		1064
		1065	unlink "$path.pst";
		1066	};
		1067
		1068	cf::map->attach (prio => -10000, package => cf::mapsupport::);
		1069
		1070	#############################################################################
		1071	# load/save perl data associated with player->ob objects
		1072
		1073	sub all_objects(@) {
		1074	@_, map all_objects ($_->inv), @_
		1075	}
		1076
		1077	# TODO: compatibility cruft, remove when no longer needed
		1078	cf::player->attach (
		1079	on_load => sub {
		1080	my ($pl, $path) = @_;
		1081
		1082	for my $o (all_objects $pl->ob) {
		1083	if (my $value = $o->get_ob_key_value ("_perl_data")) {
		1084	$o->set_ob_key_value ("_perl_data");
		1085
		1086	%$o = %{ Storable::thaw pack "H*", $value };
		1087	}
		1088	}
		1089	},
		1090	);
		1091
		1092	#############################################################################
		1093
		1094	=head2 CORE EXTENSIONS
		1095
		1096	Functions and methods that extend core crossfire objects.
		1097
		1098	=head3 cf::player
		1099
		1100	=over 4
		1101
		1102	=item cf::player::exists $login
		1103
		1104	Returns true when the given account exists.
		1105
		1106	=cut
		1107
		1108	sub cf::player::exists($) {
		1109	cf::player::find $_[0]
		1110	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
		1111	}
		1112
		1113	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1114
		1115	Sends an ext reply to the player.
		1116
		1117	=cut
		1118
		1119	sub cf::player::ext_reply($$$%) {
		1120	my ($self, $id, %msg) = @_;
		1121
		1122	$msg{msgid} = $id;
		1123
		1124	$self->send ("ext " . to_json \%msg);
		1125	}
		1126
		1127	=back
		1128
		1129
		1130	=head3 cf::map
		1131
		1132	=over 4
		1133
		1134	=cut
		1135
		1136	package cf::map;
		1137
		1138	use Fcntl;
		1139	use Coro::AIO;
		1140
		1141	our $MAX_RESET = 7200;
		1142	our $DEFAULT_RESET = 3600;
		1143
		1144	sub generate_random_map {
		1145	my ($path, $rmp) = @_;
		1146
		1147	# mit "rum" bekleckern, nicht
		1148	cf::map::_create_random_map
		1149	$path,
		1150	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1151	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1152	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1153	$rmp->{exit_on_final_map},
		1154	$rmp->{xsize}, $rmp->{ysize},
		1155	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1156	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1157	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1158	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1159	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1160	(cf::region::find $rmp->{region})
		1161	}
		1162
		1163	# and all this just because we cannot iterate over
		1164	# all maps in C++...
		1165	sub change_all_map_light {
		1166	my ($change) = @_;
		1167
		1168	$_->change_map_light ($change)
		1169	for grep $_->outdoor, values %cf::MAP;
		1170	}
		1171
		1172	sub try_load_header($) {
		1173	my ($path) = @_;
		1174
		1175	utf8::encode $path;
		1176	aio_open $path, O_RDONLY, 0
		1177	or return;
		1178
		1179	my $map = cf::map::new
		1180	or return;
		1181
		1182	$map->load_header ($path)
		1183	or return;
		1184
		1185	$map->{load_path} = $path;
		1186
		1187	$map
		1188	}
		1189
		1190	sub find_map;
		1191	sub find_map {
		1192	my ($path, $origin) = @_;
		1193
		1194	#warn "find_map<$path,$origin>\n";#d#
		1195
		1196	$path = new cf::path $path, $origin && $origin->path;
		1197	my $key = $path->as_string;
		1198
		1199	cf::lock_wait "map_find:$key";
		1200
		1201	$cf::MAP{$key} || do {
		1202	my $guard = cf::lock_acquire "map_find:$key";
		1203
		1204	# do it the slow way
		1205	my $map = try_load_header $path->save_path;
		1206
		1207	if ($map) {
		1208	$map->last_access ((delete $map->{last_access})
		1209	|| $cf::RUNTIME); #d#
		1210	# safety
		1211	$map->{instantiate_time} = $cf::RUNTIME
		1212	if $map->{instantiate_time} > $cf::RUNTIME;
		1213	} else {
		1214	if (my $rmp = $path->random_map_params) {
		1215	$map = generate_random_map $key, $rmp;
		1216	} else {
		1217	$map = try_load_header $path->load_path;
		1218	}
		1219
		1220	$map or return;
		1221
		1222	$map->{load_original} = 1;
		1223	$map->{instantiate_time} = $cf::RUNTIME;
		1224	$map->last_access ($cf::RUNTIME);
		1225	$map->instantiate;
		1226
		1227	# per-player maps become, after loading, normal maps
		1228	$map->per_player (0) if $path->{user_rel};
		1229	}
		1230
		1231	$map->path ($key);
		1232	$map->{path} = $path;
		1233	$map->{last_save} = $cf::RUNTIME;
		1234
		1235	if ($map->should_reset) {
		1236	$map->reset;
		1237	undef $guard;
		1238	$map = find_map $path
		1239	or return;
		1240	}
		1241
		1242	$cf::MAP{$key} = $map
		1243	}
		1244	}
		1245
		1246	sub load {
		1247	my ($self) = @_;
		1248
		1249	my $path = $self->{path};
		1250	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1251
		1252	return if $self->in_memory != cf::MAP_SWAPPED;
		1253
		1254	$self->in_memory (cf::MAP_LOADING);
		1255
		1256	$self->alloc;
		1257	$self->load_objects ($self->{load_path}, 1)
		1258	or return;
		1259
		1260	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1261	if delete $self->{load_original};
		1262
		1263	if (my $uniq = $path->uniq_path) {
		1264	utf8::encode $uniq;
		1265	if (aio_open $uniq, O_RDONLY, 0) {
		1266	$self->clear_unique_items;
		1267	$self->load_objects ($uniq, 0);
		1268	}
		1269	}
		1270
		1271	# now do the right thing for maps
		1272	$self->link_multipart_objects;
		1273
		1274	if ($self->{path}->is_style_map) {
		1275	$self->{deny_save} = 1;
		1276	$self->{deny_reset} = 1;
		1277	} else {
		1278	$self->fix_auto_apply;
		1279	$self->decay_objects;
		1280	$self->update_buttons;
		1281	$self->set_darkness_map;
		1282	$self->difficulty ($self->estimate_difficulty)
		1283	unless $self->difficulty;
		1284	$self->activate;
		1285	}
		1286
		1287	$self->in_memory (cf::MAP_IN_MEMORY);
		1288	}
		1289
		1290	sub load_map_sync {
		1291	my ($path, $origin) = @_;
		1292
		1293	#warn "load_map_sync<$path, $origin>\n";#d#
		1294
		1295	cf::sync_job {
		1296	my $map = cf::map::find_map $path, $origin
		1297	or return;
		1298	$map->load;
		1299	$map
		1300	}
		1301	}
		1302
		1303	sub save {
		1304	my ($self) = @_;
		1305
		1306	$self->{last_save} = $cf::RUNTIME;
		1307
		1308	return unless $self->dirty;
		1309
		1310	my $save = $self->{path}->save_path; utf8::encode $save;
		1311	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1312
		1313	$self->{load_path} = $save;
		1314
		1315	return if $self->{deny_save};
		1316
		1317	local $self->{last_access} = $self->last_access;#d#
		1318
		1319	if ($uniq) {
		1320	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1321	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1322	} else {
		1323	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1324	}
		1325	}
		1326
		1327	sub swap_out {
		1328	my ($self) = @_;
		1329
		1330	# save first because save cedes
		1331	$self->save;
		1332
		1333	return if $self->players;
		1334	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1335	return if $self->{deny_save};
		1336
		1337	$self->clear;
		1338	$self->in_memory (cf::MAP_SWAPPED);
		1339	}
		1340
		1341	sub reset_at {
		1342	my ($self) = @_;
		1343
		1344	# TODO: safety, remove and allow resettable per-player maps
		1345	return 1e99 if $self->{path}{user_rel};
		1346	return 1e99 if $self->{deny_reset};
		1347
		1348	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1349	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1350
		1351	$time + $to
		1352	}
		1353
		1354	sub should_reset {
		1355	my ($self) = @_;
		1356
		1357	$self->reset_at <= $cf::RUNTIME
		1358	}
		1359
		1360	sub unlink_save {
		1361	my ($self) = @_;
		1362
		1363	utf8::encode (my $save = $self->{path}->save_path);
		1364	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1365	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1366	}
		1367
		1368	sub rename {
		1369	my ($self, $new_path) = @_;
		1370
		1371	$self->unlink_save;
		1372
		1373	delete $cf::MAP{$self->path};
		1374	$self->{path} = new cf::path $new_path;
		1375	$self->path ($self->{path}->as_string);
		1376	$cf::MAP{$self->path} = $self;
		1377
		1378	$self->save;
		1379	}
		1380
		1381	sub reset {
		1382	my ($self) = @_;
		1383
		1384	return if $self->players;
		1385	return if $self->{path}{user_rel};#d#
		1386
		1387	warn "resetting map ", $self->path;#d#
		1388
		1389	delete $cf::MAP{$self->path};
		1390
		1391	$_->clear_links_to ($self) for values %cf::MAP;
		1392
		1393	$self->unlink_save;
		1394	$self->destroy;
		1395	}
		1396
		1397	my $nuke_counter = "aaaa";
		1398
		1399	sub nuke {
		1400	my ($self) = @_;
		1401
		1402	$self->{deny_save} = 1;
		1403	$self->reset_timeout (1);
		1404	$self->rename ("{nuke}/" . ($nuke_counter++));
		1405	$self->reset; # polite request, might not happen
		1406	}
		1407
		1408	sub customise_for {
		1409	my ($map, $ob) = @_;
		1410
		1411	if ($map->per_player) {
		1412	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1413	}
		1414
		1415	$map
		1416	}
		1417
		1418	sub emergency_save {
		1419	local $cf::FREEZE = 1;
		1420
		1421	warn "enter emergency map save\n";
		1422
		1423	cf::sync_job {
		1424	warn "begin emergency map save\n";
		1425	$_->save for values %cf::MAP;
		1426	};
		1427
		1428	warn "end emergency map save\n";
		1429	}
		1430
		1431	package cf;
		1432
		1433	=back
		1434
		1435
		1436	=head3 cf::object::player
		1437
		1438	=over 4
		1439
		1440	=item $player_object->reply ($npc, $msg[, $flags])
		1441
		1442	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
		1443	can be C<undef>. Does the right thing when the player is currently in a
		1444	dialogue with the given NPC character.
		1445
		1446	=cut
		1447
		1448	# rough implementation of a future "reply" method that works
		1449	# with dialog boxes.
		1450	#TODO: the first argument must go, split into a $npc->reply_to ( method
		1451	sub cf::object::player::reply($$$;$) {
		1452	my ($self, $npc, $msg, $flags) = @_;
		1453
		1454	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
		1455
		1456	if ($self->{record_replies}) {
		1457	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		1458	} else {
		1459	$msg = $npc->name . " says: $msg" if $npc;
		1460	$self->message ($msg, $flags);
		1461	}
		1462	}
		1463
		1464	=item $player_object->may ("access")
		1465
		1466	Returns wether the given player is authorized to access resource "access"
		1467	(e.g. "command_wizcast").
		1468
		1469	=cut
		1470
		1471	sub cf::object::player::may {
		1472	my ($self, $access) = @_;
		1473
		1474	$self->flag (cf::FLAG_WIZ) ||
		1475	(ref $cf::CFG{"may_$access"}
		1476	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1477	: $cf::CFG{"may_$access"})
		1478	}
		1479
		1480	=item $player_object->enter_link
		1481
		1482	Freezes the player and moves him/her to a special map (C<{link}>).
		1483
		1484	The player should be reaosnably safe there for short amounts of time. You
		1485	I<MUST> call C<leave_link> as soon as possible, though.
		1486
		1487	=item $player_object->leave_link ($map, $x, $y)
		1488
		1489	Moves the player out of the specila link map onto the given map. If the
		1490	map is not valid (or omitted), the player will be moved back to the
		1491	location he/she was before the call to C<enter_link>, or, if that fails,
		1492	to the emergency map position.
		1493
		1494	Might block.
		1495
		1496	=cut
		1497
		1498	sub cf::object::player::enter_link {
		1499	my ($self) = @_;
		1500
		1501	$self->deactivate_recursive;
		1502
		1503	return if $self->map == $LINK_MAP;
		1504
		1505	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1506	if $self->map;
		1507
		1508	$self->enter_map ($LINK_MAP, 20, 20);
		1509	}
		1510
		1511	sub cf::object::player::leave_link {
		1512	my ($self, $map, $x, $y) = @_;
		1513
		1514	my $link_pos = delete $self->{_link_pos};
		1515
		1516	unless ($map) {
		1517	# restore original map position
		1518	($map, $x, $y) = @{ $link_pos || [] };
		1519	$map = cf::map::find_map $map;
		1520
		1521	unless ($map) {
		1522	($map, $x, $y) = @$EMERGENCY_POSITION;
		1523	$map = cf::map::find_map $map
		1524	or die "FATAL: cannot load emergency map\n";
		1525	}
		1526	}
		1527
		1528	($x, $y) = (-1, -1)
		1529	unless (defined $x) && (defined $y);
		1530
		1531	# use -1 or undef as default coordinates, not 0, 0
		1532	($x, $y) = ($map->enter_x, $map->enter_y)
		1533	if $x <=0 && $y <= 0;
		1534
		1535	$map->load;
		1536
		1537	$self->activate_recursive;
		1538	$self->enter_map ($map, $x, $y);
		1539	}
		1540
		1541	cf::player->attach (
		1542	on_logout => sub {
		1543	my ($pl) = @_;
		1544
		1545	# abort map switching before logout
		1546	if ($pl->ob->{_link_pos}) {
		1547	cf::sync_job {
		1548	$pl->ob->leave_link
		1549	};
		1550	}
		1551	},
		1552	on_login => sub {
		1553	my ($pl) = @_;
		1554
		1555	# try to abort aborted map switching on player login :)
		1556	# should happen only on crashes
		1557	if ($pl->ob->{_link_pos}) {
		1558	$pl->ob->enter_link;
		1559	cf::async {
		1560	# we need this sleep as the login has a concurrent enter_exit running
		1561	# and this sleep increases chances of the player not ending up in scorn
		1562	Coro::Timer::sleep 1;
		1563	$pl->ob->leave_link;
		1564	};
		1565	}
		1566	},
		1567	);
		1568
		1569	=item $player_object->goto_map ($path, $x, $y)
		1570
		1571	=cut
		1572
		1573	sub cf::object::player::goto_map {
		1574	my ($self, $path, $x, $y) = @_;
		1575
		1576	$self->enter_link;
		1577
		1578	(cf::async {
		1579	$path = new cf::path $path;
		1580
		1581	my $map = cf::map::find_map $path->as_string;
		1582	$map = $map->customise_for ($self) if $map;
		1583
		1584	# warn "entering ", $map->path, " at ($x, $y)\n"
		1585	# if $map;
		1586
		1587	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1588
		1589	$self->leave_link ($map, $x, $y);
		1590	})->prio (1);
		1591	}
		1592
		1593	=item $player_object->enter_exit ($exit_object)
		1594
		1595	=cut
		1596
		1597	sub parse_random_map_params {
		1598	my ($spec) = @_;
		1599
		1600	my $rmp = { # defaults
		1601	xsize => 10,
		1602	ysize => 10,
		1603	};
		1604
		1605	for (split /\n/, $spec) {
		1606	my ($k, $v) = split /\s+/, $_, 2;
		1607
		1608	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1609	}
		1610
		1611	$rmp
		1612	}
		1613
		1614	sub prepare_random_map {
		1615	my ($exit) = @_;
		1616
		1617	# all this does is basically replace the /! path by
		1618	# a new random map path (?random/...) with a seed
		1619	# that depends on the exit object
		1620
		1621	my $rmp = parse_random_map_params $exit->msg;
		1622
		1623	if ($exit->map) {
		1624	$rmp->{region} = $exit->map->region_name;
		1625	$rmp->{origin_map} = $exit->map->path;
		1626	$rmp->{origin_x} = $exit->x;
		1627	$rmp->{origin_y} = $exit->y;
		1628	}
		1629
		1630	$rmp->{random_seed} ||= $exit->random_seed;
		1631
		1632	my $data = cf::to_json $rmp;
		1633	my $md5 = Digest::MD5::md5_hex $data;
		1634
		1635	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1636	aio_write $fh, 0, (length $data), $data, 0;
		1637
		1638	$exit->slaying ("?random/$md5");
		1639	$exit->msg (undef);
		1640	}
		1641	}
		1642
		1643	sub cf::object::player::enter_exit {
		1644	my ($self, $exit) = @_;
		1645
		1646	return unless $self->type == cf::PLAYER;
		1647
		1648	$self->enter_link;
		1649
		1650	(cf::async {
		1651	unless (eval {
		1652	prepare_random_map $exit
		1653	if $exit->slaying eq "/!";
		1654
		1655	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1656	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1657
		1658	1;
		1659	}) {
		1660	$self->message ("Something went wrong deep within the crossfire server. "
		1661	. "I'll try to bring you back to the map you were before. "
		1662	. "Please report this to the dungeon master",
		1663	cf::NDI_UNIQUE | cf::NDI_RED);
		1664
		1665	warn "ERROR in enter_exit: $@";
		1666	$self->leave_link;
		1667	}
		1668	})->prio (1);
		1669	}
		1670
		1671	=head3 cf::client
		1672
		1673	=over 4
		1674
		1675	=item $client->send_drawinfo ($text, $flags)
		1676
		1677	Sends a drawinfo packet to the client. Circumvents output buffering so
		1678	should not be used under normal circumstances.
		1679
		1680	=cut
		1681
		1682	sub cf::client::send_drawinfo {
		1683	my ($self, $text, $flags) = @_;
		1684
		1685	utf8::encode $text;
		1686	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1687	}
		1688
		1689
		1690	=item $success = $client->query ($flags, "text", \&cb)
		1691
		1692	Queues a query to the client, calling the given callback with
		1693	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1694	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1695
		1696	Queries can fail, so check the return code. Or don't, as queries will become
		1697	reliable at some point in the future.
		1698
		1699	=cut
		1700
		1701	sub cf::client::query {
		1702	my ($self, $flags, $text, $cb) = @_;
		1703
		1704	return unless $self->state == ST_PLAYING
		1705	|| $self->state == ST_SETUP
		1706	|| $self->state == ST_CUSTOM;
		1707
		1708	$self->state (ST_CUSTOM);
		1709
		1710	utf8::encode $text;
		1711	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1712
		1713	$self->send_packet ($self->{query_queue}[0][0])
		1714	if @{ $self->{query_queue} } == 1;
		1715	}
		1716
		1717	cf::client->attach (
		1718	on_reply => sub {
		1719	my ($ns, $msg) = @_;
		1720
		1721	# this weird shuffling is so that direct followup queries
		1722	# get handled first
		1723	my $queue = delete $ns->{query_queue}
		1724	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1725
		1726	(shift @$queue)->[1]->($msg);
		1727
		1728	push @{ $ns->{query_queue} }, @$queue;
		1729
		1730	if (@{ $ns->{query_queue} } == @$queue) {
		1731	if (@$queue) {
		1732	$ns->send_packet ($ns->{query_queue}[0][0]);
		1733	} else {
		1734	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1735	}
		1736	}
		1737	},
		1738	);
		1739
		1740	=item $client->coro (\&cb)
		1741
		1742	Create a new coroutine, running the specified callback. The coroutine will
		1743	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1744	or loss of connection).
		1745
		1746	=cut
		1747
		1748	sub cf::client::coro {
		1749	my ($self, $cb) = @_;
		1750
		1751	my $coro = &cf::async ($cb);
		1752
		1753	$coro->on_destroy (sub {
		1754	delete $self->{_coro}{$coro+0};
		1755	});
		1756
		1757	$self->{_coro}{$coro+0} = $coro;
		1758
		1759	$coro
		1760	}
		1761
		1762	cf::client->attach (
		1763	on_destroy => sub {
		1764	my ($ns) = @_;
		1765
		1766	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1767	},
		1768	);
		1769
		1770	=back
		1771
		1772
		1773	=head2 SAFE SCRIPTING
		1774
		1775	Functions that provide a safe environment to compile and execute
		1776	snippets of perl code without them endangering the safety of the server
		1777	itself. Looping constructs, I/O operators and other built-in functionality
		1778	is not available in the safe scripting environment, and the number of
		1779	functions and methods that can be called is greatly reduced.
		1780
		1781	=cut
		1782
		1783	our $safe = new Safe "safe";
		1784	our $safe_hole = new Safe::Hole;
		1785
		1786	$SIG{FPE} = 'IGNORE';
		1787
		1788	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
		1789
		1790	# here we export the classes and methods available to script code
		1791
		1792	=pod
		1793
		1794	The following fucntions and emthods are available within a safe environment:
		1795
		1796	cf::object contr pay_amount pay_player map
		1797	cf::object::player player
		1798	cf::player peaceful
		1799	cf::map trigger
		1800
		1801	=cut
		1802
		1803	for (
		1804	["cf::object" => qw(contr pay_amount pay_player map)],
		1805	["cf::object::player" => qw(player)],
		1806	["cf::player" => qw(peaceful)],
		1807	["cf::map" => qw(trigger)],
		1808	) {
		1809	no strict 'refs';
		1810	my ($pkg, @funs) = @$_;
		1811	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
		1812	for @funs;
		1813	}
		1814
		1815	=over 4
		1816
		1817	=item @retval = safe_eval $code, [var => value, ...]
		1818
		1819	Compiled and executes the given perl code snippet. additional var/value
		1820	pairs result in temporary local (my) scalar variables of the given name
		1821	that are available in the code snippet. Example:
		1822
		1823	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1824
		1825	=cut
		1826
		1827	sub safe_eval($;@) {
		1828	my ($code, %vars) = @_;
		1829
		1830	my $qcode = $code;
		1831	$qcode =~ s/"/‟/g; # not allowed in #line filenames
		1832	$qcode =~ s/\n/\\n/g;
		1833
		1834	local $_;
		1835	local @safe::cf::_safe_eval_args = values %vars;
		1836
		1837	my $eval =
		1838	"do {\n"
		1839	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
		1840	. "#line 0 \"{$qcode}\"\n"
		1841	. $code
		1842	. "\n}"
		1843	;
		1844
		1845	sub_generation_inc;
		1846	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
		1847	sub_generation_inc;
		1848
		1849	if ($@) {
		1850	warn "$@";
		1851	warn "while executing safe code '$code'\n";
		1852	warn "with arguments " . (join " ", %vars) . "\n";
		1853	}
		1854
		1855	wantarray ? @res : $res[0]
		1856	}
		1857
		1858	=item cf::register_script_function $function => $cb
		1859
		1860	Register a function that can be called from within map/npc scripts. The
		1861	function should be reasonably secure and should be put into a package name
		1862	like the extension.
		1863
		1864	Example: register a function that gets called whenever a map script calls
		1865	C<rent::overview>, as used by the C<rent> extension.
		1866
		1867	cf::register_script_function "rent::overview" => sub {
		1868	...
		1869	};
		1870
		1871	=cut
		1872
		1873	sub register_script_function {
		1874	my ($fun, $cb) = @_;
		1875
		1876	no strict 'refs';
		1877	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		1878	}
		1879
		1880	=back
		1881
		1882	=cut
		1883
		1884	#############################################################################
		1885
		1886	=head2 EXTENSION DATABASE SUPPORT
		1887
		1888	Crossfire maintains a very simple database for extension use. It can
		1889	currently store anything that can be serialised using Storable, which
		1890	excludes objects.
		1891
		1892	The parameter C<$family> should best start with the name of the extension
		1893	using it, it should be unique.
		1894
		1895	=over 4
		1896
		1897	=item $hashref = cf::db_get $family
		1898
		1899	Return a hashref for use by the extension C<$family>, which can be
		1900	modified. After modifications, you have to call C<cf::db_dirty> or
		1901	C<cf::db_sync>.
		1902
		1903	=item $value = cf::db_get $family => $key
		1904
		1905	Returns a single value from the database
		1906
		1907	=item cf::db_put $family => $hashref
		1908
		1909	Stores the given family hashref into the database. Updates are delayed, if
		1910	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1911
		1912	=item cf::db_put $family => $key => $value
		1913
		1914	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1915	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1916
		1917	=item cf::db_dirty
		1918
		1919	Marks the database as dirty, to be updated at a later time.
		1920
		1921	=item cf::db_sync
		1922
		1923	Immediately write the database to disk I<if it is dirty>.
		1924
		1925	=cut
		1926
		1927	our $DB;
		1928
		1929	{
		1930	my $path = cf::localdir . "/database.pst";
		1931
		1932	sub db_load() {
		1933	$DB = stat $path ? Storable::retrieve $path : { };
		1934	}
		1935
		1936	my $pid;
		1937
		1938	sub db_save() {
		1939	waitpid $pid, 0 if $pid;
		1940	if (0 == ($pid = fork)) {
		1941	$DB->{_meta}{version} = 1;
		1942	Storable::nstore $DB, "$path~";
		1943	rename "$path~", $path;
		1944	cf::_exit 0 if defined $pid;
		1945	}
		1946	}
		1947
		1948	my $dirty;
		1949
		1950	sub db_sync() {
		1951	db_save if $dirty;
		1952	undef $dirty;
		1953	}
		1954
		1955	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1956	db_sync;
		1957	});
		1958
		1959	sub db_dirty() {
		1960	$dirty = 1;
		1961	$idle->start;
		1962	}
		1963
		1964	sub db_get($;$) {
		1965	@_ >= 2
		1966	? $DB->{$_[0]}{$_[1]}
		1967	: ($DB->{$_[0]} ||= { })
		1968	}
		1969
		1970	sub db_put($$;$) {
		1971	if (@_ >= 3) {
		1972	$DB->{$_[0]}{$_[1]} = $_[2];
		1973	} else {
		1974	$DB->{$_[0]} = $_[1];
		1975	}
		1976	db_dirty;
		1977	}
		1978
		1979	cf::global->attach (
		1980	prio => 10000,
		1981	on_cleanup => sub {
		1982	db_sync;
		1983	},
		1984	);
		1985	}
		1986
		1987	#############################################################################
		1988	# the server's main()
		1989
		1990	sub cfg_load {
		1991	open my $fh, "<:utf8", cf::confdir . "/config"
		1992	or return;
		1993
		1994	local $/;
		1995	*CFG = YAML::Syck::Load <$fh>;
		1996
		1997	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		1998
		1999	if (exists $CFG{mlockall}) {
		2000	eval {
		2001	$CFG{mlockall} ? &mlockall : &munlockall
		2002	and die "WARNING: m(un)lockall failed: $!\n";
		2003	};
		2004	warn $@ if $@;
		2005	}
		2006	}
		2007
		2008	sub main {
		2009	# we must not ever block the main coroutine
		2010	local $Coro::idle = sub {
		2011	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2012	(Coro::unblock_sub {
		2013	Event::one_event;
		2014	})->();
		2015	};
		2016
		2017	cfg_load;
		2018	db_load;
		2019	load_extensions;
		2020	Event::loop;
		2021	}
		2022
		2023	#############################################################################
		2024	# initialisation
		2025
		2026	sub reload() {
		2027	# can/must only be called in main
		2028	if ($Coro::current != $Coro::main) {
		2029	warn "can only reload from main coroutine\n";
		2030	return;
		2031	}
		2032
		2033	warn "reloading...";
		2034
		2035	local $FREEZE = 1;
		2036	cf::emergency_save;
		2037
		2038	eval {
		2039	# if anything goes wrong in here, we should simply crash as we already saved
		2040
		2041	# cancel all watchers
		2042	for (Event::all_watchers) {
		2043	$_->cancel if $_->data & WF_AUTOCANCEL;
		2044	}
		2045
		2046	# cancel all extension coros
		2047	$_->cancel for values %EXT_CORO;
		2048	%EXT_CORO = ();
		2049
		2050	# unload all extensions
		2051	for (@exts) {
		2052	warn "unloading <$_>";
		2053	unload_extension $_;
		2054	}
		2055
		2056	# unload all modules loaded from $LIBDIR
		2057	while (my ($k, $v) = each %INC) {
		2058	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2059
		2060	warn "removing <$k>";
		2061	delete $INC{$k};
		2062
		2063	$k =~ s/\.pm$//;
		2064	$k =~ s/\//::/g;
		2065
		2066	if (my $cb = $k->can ("unload_module")) {
		2067	$cb->();
		2068	}
		2069
		2070	Symbol::delete_package $k;
		2071	}
		2072
		2073	# sync database to disk
		2074	cf::db_sync;
		2075	IO::AIO::flush;
		2076
		2077	# get rid of safe::, as good as possible
		2078	Symbol::delete_package "safe::$_"
		2079	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2080
		2081	# remove register_script_function callbacks
		2082	# TODO
		2083
		2084	# unload cf.pm "a bit"
		2085	delete $INC{"cf.pm"};
		2086
		2087	# don't, removes xs symbols, too,
		2088	# and global variables created in xs
		2089	#Symbol::delete_package __PACKAGE__;
		2090
		2091	# reload cf.pm
		2092	warn "reloading cf.pm";
		2093	require cf;
		2094	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2095
		2096	# load config and database again
		2097	cf::cfg_load;
		2098	cf::db_load;
		2099
		2100	# load extensions
		2101	warn "load extensions";
		2102	cf::load_extensions;
		2103
		2104	# reattach attachments to objects
		2105	warn "reattach";
		2106	_global_reattach;
		2107	};
		2108
		2109	if ($@) {
		2110	warn $@;
		2111	warn "error while reloading, exiting.";
		2112	exit 1;
		2113	}
		2114
		2115	warn "reloaded successfully";
		2116	};
		2117
		2118	#############################################################################
		2119
		2120	unless ($LINK_MAP) {
		2121	$LINK_MAP = cf::map::new;
		2122
		2123	$LINK_MAP->width (41);
		2124	$LINK_MAP->height (41);
		2125	$LINK_MAP->alloc;
		2126	$LINK_MAP->path ("{link}");
		2127	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2128	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2129
		2130	# dirty hack because... archetypes are not yet loaded
		2131	Event->timer (
		2132	after => 2,
		2133	cb => sub {
		2134	$_[0]->w->cancel;
		2135
		2136	# provide some exits "home"
		2137	my $exit = cf::object::new "exit";
		2138
		2139	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2140	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2141	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2142
		2143	$LINK_MAP->insert ($exit->clone, 19, 19);
		2144	$LINK_MAP->insert ($exit->clone, 19, 20);
		2145	$LINK_MAP->insert ($exit->clone, 19, 21);
		2146	$LINK_MAP->insert ($exit->clone, 20, 19);
		2147	$LINK_MAP->insert ($exit->clone, 20, 21);
		2148	$LINK_MAP->insert ($exit->clone, 21, 19);
		2149	$LINK_MAP->insert ($exit->clone, 21, 20);
		2150	$LINK_MAP->insert ($exit->clone, 21, 21);
		2151
		2152	$exit->destroy;
		2153	});
		2154
		2155	$LINK_MAP->{deny_save} = 1;
		2156	$LINK_MAP->{deny_reset} = 1;
		2157
		2158	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2159	}
		2160
		2161	register "<global>", __PACKAGE__;
		2162
171	register_command "perl-reload", 0, sub {	2163	register_command "reload" => sub {
172	my ($who, $arg) = @_;	2164	my ($who, $arg) = @_;
173		2165
174	if ($who->flag (FLAG_WIZ)) {	2166	if ($who->flag (FLAG_WIZ)) {
175	$who->message ("reloading...");	2167	$who->message ("start of reload.");
176		2168	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");	2169	$who->message ("end of reload.");
184	} else {
185	$who->message ("Intruder Alert!");
186	}	2170	}
187	};	2171	};
188		2172
189	load_extensions;	2173	unshift @INC, $LIBDIR;
		2174
		2175	$TICK_WATCHER = Event->timer (
		2176	reentrant => 0,
		2177	prio => 0,
		2178	at => $NEXT_TICK || $TICK,
		2179	data => WF_AUTOCANCEL,
		2180	cb => sub {
		2181	unless ($FREEZE) {
		2182	cf::server_tick; # one server iteration
		2183	$RUNTIME += $TICK;
		2184	}
		2185
		2186	$NEXT_TICK += $TICK;
		2187
		2188	# if we are delayed by four ticks or more, skip them all
		2189	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
		2190
		2191	$TICK_WATCHER->at ($NEXT_TICK);
		2192	$TICK_WATCHER->start;
		2193	},
		2194	);
		2195
		2196	IO::AIO::max_poll_time $TICK * 0.2;
		2197
		2198	Event->io (
		2199	fd => IO::AIO::poll_fileno,
		2200	poll => 'r',
		2201	prio => 5,
		2202	data => WF_AUTOCANCEL,
		2203	cb => \&IO::AIO::poll_cb,
		2204	);
		2205
		2206	Event->timer (
		2207	data => WF_AUTOCANCEL,
		2208	after => 0,
		2209	interval => 10,
		2210	cb => sub {
		2211	(Coro::unblock_sub {
		2212	write_runtime
		2213	or warn "ERROR: unable to write runtime file: $!";
		2214	})->();
		2215	},
		2216	);
		2217
		2218	END { cf::emergency_save }
190		2219
191	1	2220	1
192		2221

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines