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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.49 by root, Sun Aug 27 17:59:26 2006 UTC vs.
Revision 1.162 by root, Thu Jan 11 00:41:08 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
		23	use IO::AIO 2.32 ();
		24	use YAML::Syck ();
10	use Time::HiRes;	25	use Time::HiRes;
11	use Event;	26
12	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		28
14	use strict;	29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	_reload_1;	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
17		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
18	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
19	our @EVENT;	44	our @EVENT;
20	our %PROP_TYPE;	45	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		46
24	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	48	our $TICK_WATCHER;
26	our $NEXT_TICK;	49	our $NEXT_TICK;
		50	our $NOW;
		51
		52	our %CFG;
		53
		54	our $UPTIME; $UPTIME ||= time;
		55	our $RUNTIME;
		56
		57	our %PLAYER; # all users
		58	our %MAP; # all maps
		59	our $LINK_MAP; # the special {link} map
		60	our $RANDOM_MAPS = cf::localdir . "/random";
		61
		62	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		63	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		64
		65	binmode STDOUT;
		66	binmode STDERR;
		67
		68	# read virtual server time, if available
		69	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		70	open my $fh, "<", cf::localdir . "/runtime"
		71	or die "unable to read runtime file: $!";
		72	$RUNTIME = <$fh> + 0.;
		73	}
		74
		75	mkdir cf::localdir;
		76	mkdir cf::localdir . "/" . cf::playerdir;
		77	mkdir cf::localdir . "/" . cf::tmpdir;
		78	mkdir cf::localdir . "/" . cf::uniquedir;
		79	mkdir $RANDOM_MAPS;
		80
		81	# a special map that is always available
		82	our $LINK_MAP;
		83	our $EMERGENCY_POSITION;
		84
		85	#############################################################################
		86
		87	=head2 GLOBAL VARIABLES
		88
		89	=over 4
		90
		91	=item $cf::UPTIME
		92
		93	The timestamp of the server start (so not actually an uptime).
		94
		95	=item $cf::RUNTIME
		96
		97	The time this server has run, starts at 0 and is increased by $cf::TICK on
		98	every server tick.
		99
		100	=item $cf::LIBDIR
		101
		102	The perl library directory, where extensions and cf-specific modules can
		103	be found. It will be added to C<@INC> automatically.
		104
		105	=item $cf::NOW
		106
		107	The time of the last (current) server tick.
		108
		109	=item $cf::TICK
		110
		111	The interval between server ticks, in seconds.
		112
		113	=item %cf::CFG
		114
		115	Configuration for the server, loaded from C</etc/crossfire/config>, or
		116	from wherever your confdir points to.
		117
		118	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		119
		120	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		121	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		122	processing has been done. Call C<< ->wait >> on them to maximise the
		123	window of cpu time available, or simply to synchronise to the server tick.
		124
		125	=back
		126
		127	=cut
27		128
28	BEGIN {	129	BEGIN {
29	*CORE::GLOBAL::warn = sub {	130	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	131	my $msg = join "", @_;
		132	utf8::encode $msg;
		133
31	$msg .= "\n"	134	$msg .= "\n"
32	unless $msg =~ /\n$/;	135	unless $msg =~ /\n$/;
33		136
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	137	LOG llevError, $msg;
36	};	138	};
37	}	139	}
38		140
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	141	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		142	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	143	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	144	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	145	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	146	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		147
75	# we bless all objects into (empty) derived classes to force a method lookup	148	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	149	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	150	for my $pkg (qw(
		151	cf::global cf::attachable
		152	cf::object cf::object::player
		153	cf::client cf::player
		154	cf::arch cf::living
		155	cf::map cf::party cf::region
		156	)) {
78	no strict 'refs';	157	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	158	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	159	}
81		160
82	$Event::DIED = sub {	161	$Event::DIED = sub {
83	warn "error in event callback: @_";	162	warn "error in event callback: @_";
84	};	163	};
85		164
86	my %ext_pkg;	165	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		166
92	#############################################################################	167	=over 4
93	# utility functions	168
		169	=item dumpval $ref
		170
		171	=cut
		172
		173	sub dumpval {
		174	eval {
		175	local $SIG{__DIE__};
		176	my $d;
		177	if (1) {
		178	$d = new Data::Dumper([$_[0]], ["*var"]);
		179	$d->Terse(1);
		180	$d->Indent(2);
		181	$d->Quotekeys(0);
		182	$d->Useqq(1);
		183	#$d->Bless(...);
		184	$d->Seen($_[1]) if @_ > 1;
		185	$d = $d->Dump();
		186	}
		187	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		188	$d
		189	} || "[unable to dump $_[0]: '$@']";
		190	}
94		191
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	192	use JSON::Syck (); # TODO# replace by JSON::PC once working
		193
		194	=item $ref = cf::from_json $json
		195
		196	Converts a JSON string into the corresponding perl data structure.
		197
		198	=cut
96		199
97	sub from_json($) {	200	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	201	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	202	JSON::Syck::Load $_[0]
100	}	203	}
101		204
		205	=item $json = cf::to_json $ref
		206
		207	Converts a perl data structure into its JSON representation.
		208
		209	=cut
		210
102	sub to_json($) {	211	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	212	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	213	JSON::Syck::Dump $_[0]
105	}	214	}
106		215
		216	=item cf::lock_wait $string
		217
		218	Wait until the given lock is available. See cf::lock_acquire.
		219
		220	=item my $lock = cf::lock_acquire $string
		221
		222	Wait until the given lock is available and then acquires it and returns
		223	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		224	for example when the coroutine gets canceled), the lock is automatically
		225	returned.
		226
		227	Lock names should begin with a unique identifier (for example, cf::map::find
		228	uses map_find and cf::map::load uses map_load).
		229
		230	=cut
		231
		232	our %LOCK;
		233
		234	sub lock_wait($) {
		235	my ($key) = @_;
		236
		237	# wait for lock, if any
		238	while ($LOCK{$key}) {
		239	push @{ $LOCK{$key} }, $Coro::current;
		240	Coro::schedule;
		241	}
		242	}
		243
		244	sub lock_acquire($) {
		245	my ($key) = @_;
		246
		247	# wait, to be sure we are not locked
		248	lock_wait $key;
		249
		250	$LOCK{$key} = [];
		251
		252	Coro::guard {
		253	# wake up all waiters, to be on the safe side
		254	$_->ready for @{ delete $LOCK{$key} };
		255	}
		256	}
		257
		258	sub freeze_mainloop {
		259	return unless $TICK_WATCHER->is_active;
		260
		261	my $guard = Coro::guard { $TICK_WATCHER->start };
		262	$TICK_WATCHER->stop;
		263	$guard
		264	}
		265
		266	=item cf::async { BLOCK }
		267
		268	Currently the same as Coro::async_pool, meaning you cannot use
		269	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		270	thing you are allowed to do is call C<prio> on it.
		271
		272	=cut
		273
		274	BEGIN { *async = \&Coro::async_pool }
		275
		276	=item cf::sync_job { BLOCK }
		277
		278	The design of crossfire+ requires that the main coro ($Coro::main) is
		279	always able to handle events or runnable, as crossfire+ is only partly
		280	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		281
		282	If it must be done, put the blocking parts into C<sync_job>. This will run
		283	the given BLOCK in another coroutine while waiting for the result. The
		284	server will be frozen during this time, so the block should either finish
		285	fast or be very important.
		286
		287	=cut
		288
		289	sub sync_job(&) {
		290	my ($job) = @_;
		291
		292	if ($Coro::current == $Coro::main) {
		293	# this is the main coro, too bad, we have to block
		294	# till the operation succeeds, freezing the server :/
		295
		296	# TODO: use suspend/resume instead
		297	# (but this is cancel-safe)
		298	my $freeze_guard = freeze_mainloop;
		299
		300	my $busy = 1;
		301	my @res;
		302
		303	(async {
		304	@res = eval { $job->() };
		305	warn $@ if $@;
		306	undef $busy;
		307	})->prio (Coro::PRIO_MAX);
		308
		309	while ($busy) {
		310	Coro::cede or Event::one_event;
		311	}
		312
		313	wantarray ? @res : $res[0]
		314	} else {
		315	# we are in another coroutine, how wonderful, everything just works
		316
		317	$job->()
		318	}
		319	}
		320
		321	=item $coro = cf::async_ext { BLOCK }
		322
		323	Like async, but this coro is automatically being canceled when the
		324	extension calling this is being unloaded.
		325
		326	=cut
		327
		328	sub async_ext(&) {
		329	my $cb = shift;
		330
		331	my $coro = &Coro::async ($cb);
		332
		333	$coro->on_destroy (sub {
		334	delete $EXT_CORO{$coro+0};
		335	});
		336	$EXT_CORO{$coro+0} = $coro;
		337
		338	$coro
		339	}
		340
		341	sub write_runtime {
		342	my $runtime = cf::localdir . "/runtime";
		343
		344	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		345	or return;
		346
		347	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		348	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		349	and return;
		350
		351	aio_fsync $fh
		352	and return;
		353
		354	close $fh
		355	or return;
		356
		357	aio_rename "$runtime~", $runtime
		358	and return;
		359
		360	1
		361	}
		362
		363	=back
		364
		365	=cut
		366
107	#############################################################################	367	#############################################################################
108	# "new" plug-in system
109		368
		369	package cf::path;
		370
		371	use overload
		372	'""' => \&as_string;
		373
		374	# used to convert map paths into valid unix filenames by repalcing / by ∕
		375	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		376
		377	sub register {
		378	my ($pkg, $prefix) = @_;
		379
		380	$EXT_MAP{$prefix} = $pkg;
		381	}
		382
		383	sub new {
		384	my ($class, $path, $base) = @_;
		385
		386	return $path if ref $path;
		387
		388	my $self = {};
		389
		390	# {... are special paths that are not being touched
		391	# ?xxx/... are special absolute paths
		392	# ?random/... random maps
		393	# /! non-realised random map exit
		394	# /... normal maps
		395	# ~/... per-player maps without a specific player (DO NOT USE)
		396	# ~user/... per-player map of a specific user
		397
		398	$path =~ s/$PATH_SEP/\//go;
		399
		400	if ($path =~ /^{/) {
		401	# fine as it is
		402	} else {
		403	if ($path =~ s{^~([^/]+)?}{}) {
		404	# ~user
		405	$self->{user_rel} = 1;
		406
		407	if (defined $1) {
		408	$self->{user} = $1;
		409	} elsif ($base =~ m{^~([^/]+)/}) {
		410	$self->{user} = $1;
		411	} else {
		412	warn "cannot resolve user-relative path without user <$path,$base>\n";
		413	}
		414	} elsif ($path =~ s{^\?([^/]+)/}{}) {
		415	# ?...
		416	$self->{ext} = $1;
		417	if (my $ext = $EXT_MAP{$1}) {
		418	bless $self, $ext;
		419	}
		420	} elsif ($path =~ /^\//) {
		421	# /...
		422	# already absolute
		423	} else {
		424	# relative
		425	$base =~ s{[^/]+/?$}{};
		426	return $class->new ("$base/$path");
		427	}
		428
		429	for ($path) {
		430	redo if s{/\.?/}{/};
		431	redo if s{/[^/]+/\.\./}{/};
		432	}
		433	}
		434
		435	$self->{path} = $path;
		436
		437	if ("HASH" eq ref $self) {
		438	bless $self, $class;
		439	} else {
		440	$self->init;
		441	}
		442
		443	for my $ext (values %EXT_MAP) {
		444	if (my $subst = $ext->substitute ($self)) {
		445	return $subst;
		446	}
		447	}
		448
		449	$self
		450	}
		451
		452	sub init {
		453	# nop
		454	}
		455
		456	sub substitute {
		457	()
		458	}
		459
		460	# the name / primary key / in-game path
		461	sub as_string {
		462	my ($self) = @_;
		463
		464	$self->{user_rel} ? "~$self->{user}$self->{path}"
		465	: $self->{ext} ? "?$self->{ext}/$self->{path}"
		466	: $self->{path}
		467	}
		468
		469	# the displayed name, this is a one way mapping
		470	sub visible_name {
		471	&as_string
		472	}
		473
		474	# escape the /'s in the path
		475	sub _escaped_path {
		476	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		477
		478	$path
		479	}
		480
		481	# the original (read-only) location
		482	sub load_path {
		483	my ($self) = @_;
		484
		485	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		486	}
		487
		488	# the temporary/swap location
		489	sub save_path {
		490	my ($self) = @_;
		491
		492	$self->{user_rel}
		493	? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		494	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		495	}
		496
		497	# the unique path, undef == no special unique path
		498	sub uniq_path {
		499	my ($self) = @_;
		500
		501	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		502	}
		503
		504	# this is somewhat ugly, but style maps do need special treatment
		505	sub is_style_map {
		506	$_[0]{path} =~ m{^/styles/}
		507	}
		508
		509	sub load_orig {
		510	my ($self) = @_;
		511
		512	&cf::map::load_map_header ($self->load_path)
		513	}
		514
		515	sub load_temp {
		516	my ($self) = @_;
		517
		518	&cf::map::load_map_header ($self->save_path)
		519	}
		520
		521	package cf;
		522
		523	#############################################################################
		524
		525	=head2 ATTACHABLE OBJECTS
		526
		527	Many objects in crossfire are so-called attachable objects. That means you can
		528	attach callbacks/event handlers (a collection of which is called an "attachment")
		529	to it. All such attachable objects support the following methods.
		530
		531	In the following description, CLASS can be any of C<global>, C<object>
		532	C<player>, C<client> or C<map> (i.e. the attachable objects in
		533	crossfire+).
		534
		535	=over 4
		536
110	=item $object->attach ($attachment, key => $value...)	537	=item $attachable->attach ($attachment, key => $value...)
111		538
112	Attach a pre-registered attachment to an object.	539	=item $attachable->detach ($attachment)
113		540
114	=item $player->attach ($attachment, key => $value...)	541	Attach/detach a pre-registered attachment to a specific object and give it
		542	the specified key/value pairs as arguments.
115		543
116	Attach a pre-registered attachment to a player.	544	Example, attach a minesweeper attachment to the given object, making it a
		545	10x10 minesweeper game:
117		546
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	547	$obj->attach (minesweeper => width => 10, height => 10);
119		548
120	Attach a pre-registered attachment to a map.	549	=item $bool = $attachable->attached ($name)
121		550
122	=item cf::attach_global ...	551	Checks wether the named attachment is currently attached to the object.
123		552
124	Attach handlers for global events.	553	=item cf::CLASS->attach ...
125		554
126	This and all following C<attach_*>-functions expect any number of the	555	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	556
		557	Define an anonymous attachment and attach it to all objects of the given
		558	CLASS. See the next function for an explanation of its arguments.
		559
		560	You can attach to global events by using the C<cf::global> class.
		561
		562	Example, log all player logins:
		563
		564	cf::player->attach (
		565	on_login => sub {
		566	my ($pl) = @_;
		567	...
		568	},
		569	);
		570
		571	Example, attach to the jeweler skill:
		572
		573	cf::object->attach (
		574	type => cf::SKILL,
		575	subtype => cf::SK_JEWELER,
		576	on_use_skill => sub {
		577	my ($sk, $ob, $part, $dir, $msg) = @_;
		578	...
		579	},
		580	);
		581
		582	=item cf::CLASS::attachment $name, ...
		583
		584	Register an attachment by C<$name> through which attachable objects of the
		585	given CLASS can refer to this attachment.
		586
		587	Some classes such as crossfire maps and objects can specify attachments
		588	that are attached at load/instantiate time, thus the need for a name.
		589
		590	These calls expect any number of the following handler/hook descriptions:
128		591
129	=over 4	592	=over 4
130		593
131	=item prio => $number	594	=item prio => $number
132		595
…		…
134	by another C<prio> setting). Lower priority handlers get executed	597	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	598	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	599	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	600	unless you know what you are doing.
138		601
		602	=item type => $type
		603
		604	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		605	given type of objects only (the additional parameter C<subtype> can be
		606	used to further limit to the given subtype).
		607
139	=item on_I<event> => \&cb	608	=item on_I<event> => \&cb
140		609
141	Call the given code reference whenever the named event happens (event is	610	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	611	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	612	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	621	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	622	object/class are recognised.
154		623
155	=back	624	=back
156		625
157	=item cf::attach_to_type $object_type, $subtype, ...	626	Example, define an attachment called "sockpuppet" that calls the given
		627	event handler when a monster attacks:
158		628
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	629	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	630	on_skill_attack => sub {
161	type.	631	my ($self, $victim) = @_;
		632	...
		633	}
		634	}
162		635
163	=item cf::attach_to_objects ...	636	=item $attachable->valid
164		637
165	Attach handlers to all objects. Do not use this except for debugging or	638	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	639	C-level object still exists. If you try to access an object that has no
167	the game.	640	valid C counterpart anymore you get an exception at runtime. This method
168		641	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	642	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		643
179	=cut	644	=cut
180		645
181	# the following variables are defined in .xs and must not be re-created	646	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	647	our @CB_GLOBAL = (); # registry for all global events
		648	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	649	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	650	our @CB_PLAYER = ();
		651	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	652	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	653	our @CB_MAP = ();
187		654
188	my %attachment;	655	my %attachment;
189		656
190	sub _attach_cb($\%$$$) {	657	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	658	my ($registry, $event, $prio, $cb) = @_;
192		659
193	use sort 'stable';	660	use sort 'stable';
194		661
195	$cb = [$prio, $cb];	662	$cb = [$prio, $cb];
196		663
197	@{$registry->[$event]} = sort	664	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	665	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	666	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	667	}
		668
		669	# hack
		670	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		671
204	# attach handles attaching event callbacks	672	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	673	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	674	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	675	sub _attach {
208	my ($registry, $klass, @arg) = @_;	676	my ($registry, $klass, @arg) = @_;
209		677
		678	my $object_type;
210	my $prio = 0;	679	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	680	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		681
		682	#TODO: get rid of this hack
		683	if ($attachable_klass{$klass}) {
		684	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		685	}
218		686
219	while (@arg) {	687	while (@arg) {
220	my $type = shift @arg;	688	my $type = shift @arg;
221		689
222	if ($type eq "prio") {	690	if ($type eq "prio") {
223	$prio = shift @arg;	691	$prio = shift @arg;
224		692
		693	} elsif ($type eq "type") {
		694	$object_type = shift @arg;
		695	$registry = $CB_TYPE[$object_type] ||= [];
		696
		697	} elsif ($type eq "subtype") {
		698	defined $object_type or Carp::croak "subtype specified without type";
		699	my $object_subtype = shift @arg;
		700	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		701
225	} elsif ($type eq "package") {	702	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	703	my $pkg = shift @arg;
227		704
228	while (my ($name, $id) = each %cb_id) {	705	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	706	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	707	_attach_cb $registry, $id, $prio, $cb;
231	}	708	}
232	}	709	}
233		710
234	} elsif (exists $cb_id{$type}) {	711	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	712	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		713
237	} elsif (ref $type) {	714	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	715	warn "attaching objects not supported, ignoring.\n";
239		716
240	} else {	717	} else {
241	shift @arg;	718	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	719	warn "attach argument '$type' not supported, ignoring.\n";
243	}	720	}
244	}	721	}
245
246	\%undo
247	}	722	}
248		723
249	sub _attach_attachment {	724	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	725	my ($obj, $name, %arg) = @_;
251		726
252	my $res;	727	return if exists $obj->{_attachment}{$name};
253		728
254	if (my $attach = $attachment{$name}) {	729	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	730	my $registry = $obj->registry;
256		731
257	for (@$attach) {	732	for (@$attach) {
258	my ($klass, @attach) = @$_;	733	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	734	_attach $registry, $klass, @attach;
260	}	735	}
261		736
262	$obj->{$name} = \%arg;	737	$obj->{$name} = \%arg;
263	} else {	738	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	739	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	740	}
266		741
267	push @{$obj->{_attachment}}, $name;	742	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	743	}
272		744
273	sub cf::object::attach {	745	sub cf::attachable::attach {
		746	if (ref $_[0]) {
		747	_object_attach @_;
		748	} else {
		749	_attach shift->_attach_registry, @_;
		750	}
		751	};
		752
		753	# all those should be optimised
		754	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	755	my ($obj, $name) = @_;
275		756
276	_attach_attachment $obj, $name, %arg;	757	if (ref $obj) {
277	}	758	delete $obj->{_attachment}{$name};
		759	reattach ($obj);
		760	} else {
		761	Carp::croak "cannot, currently, detach class attachments";
		762	}
		763	};
278		764
279	sub cf::player::attach {	765	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	766	my ($obj, $name) = @_;
281		767
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	768	exists $obj->{_attachment}{$name}
283	}	769	}
284		770
285	sub cf::map::attach {	771	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	772	eval "#line " . __LINE__ . " 'cf.pm'
		773	sub cf::\L$klass\E::_attach_registry {
		774	(\\\@CB_$klass, KLASS_$klass)
		775	}
287		776
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	777	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	778	my \$name = shift;
316		779
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	780	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		781	}
		782	";
		783	die if $@;
318	}	784	}
319		785
320	our $override;	786	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	787	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		788
…		…
336	for (@$callbacks) {	802	for (@$callbacks) {
337	eval { &{$_->[1]} };	803	eval { &{$_->[1]} };
338		804
339	if ($@) {	805	if ($@) {
340	warn "$@";	806	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	807	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	808	override;
343	}	809	}
344		810
345	return 1 if $override;	811	return 1 if $override;
346	}	812	}
347		813
348	0	814	0
349	}	815	}
		816
		817	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		818
		819	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		820
		821	Generate an object-specific event with the given arguments.
		822
		823	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		824	removed in future versions), and there is no public API to access override
		825	results (if you must, access C<@cf::invoke_results> directly).
		826
		827	=back
		828
		829	=cut
350		830
351	#############################################################################	831	#############################################################################
352	# object support	832	# object support
353		833
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361
362	$obj->attach ($name, %{$args || {} });
363	}
364	}
365
366	# basically do the same as instantiate, without calling instantiate
367	sub reattach {	834	sub reattach {
		835	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	836	my ($obj) = @_;
		837
369	my $registry = $obj->registry;	838	my $registry = $obj->registry;
370		839
371	@$registry = ();	840	@$registry = ();
372		841
373	delete $obj->{_attachment} unless @{ $obj->{_attachment} || [] };	842	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		843
375	for my $name (@{ $obj->{_attachment} || [] }) {	844	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	845	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	846	for (@$attach) {
378	my ($klass, @attach) = @$_;	847	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	848	_attach $registry, $klass, @attach;
380	}	849	}
381	} else {	850	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	851	warn "object uses attachment '$name' that is not available, postponing.\n";
383	}	852	}
384	}	853	}
385	}	854	}
386		855
		856	cf::attachable->attach (
		857	prio => -1000000,
		858	on_instantiate => sub {
		859	my ($obj, $data) = @_;
		860
		861	$data = from_json $data;
		862
		863	for (@$data) {
		864	my ($name, $args) = @$_;
		865
		866	$obj->attach ($name, %{$args || {} });
		867	}
		868	},
		869	on_reattach => \&reattach,
		870	on_clone => sub {
		871	my ($src, $dst) = @_;
		872
		873	@{$dst->registry} = @{$src->registry};
		874
		875	%$dst = %$src;
		876
		877	%{$dst->{_attachment}} = %{$src->{_attachment}}
		878	if exists $src->{_attachment};
		879	},
		880	);
		881
387	sub object_freezer_save {	882	sub object_freezer_save {
388	my ($filename, $objs) = @_;	883	my ($filename, $rdata, $objs) = @_;
389		884
390	$filename .= ".pst";	885	sync_job {
		886	if (length $$rdata) {
		887	warn sprintf "saving %s (%d,%d)\n",
		888	$filename, length $$rdata, scalar @$objs;
391		889
392	if (@$objs) {	890	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
393	open my $fh, ">:raw", "$filename~";	891	chmod SAVE_MODE, $fh;
394	chmod $fh, SAVE_MODE;	892	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
395	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	893	aio_fsync $fh;
396	close $fh;	894	close $fh;
		895
		896	if (@$objs) {
		897	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		898	chmod SAVE_MODE, $fh;
		899	my $data = Storable::nfreeze { version => 1, objs => $objs };
		900	aio_write $fh, 0, (length $data), $data, 0;
		901	aio_fsync $fh;
		902	close $fh;
		903	aio_rename "$filename.pst~", "$filename.pst";
		904	}
		905	} else {
		906	aio_unlink "$filename.pst";
		907	}
		908
397	rename "$filename~", $filename;	909	aio_rename "$filename~", $filename;
		910	} else {
		911	warn "FATAL: $filename~: $!\n";
		912	}
398	} else {	913	} else {
399	unlink $filename;	914	aio_unlink $filename;
		915	aio_unlink "$filename.pst";
		916	}
400	}	917	}
		918	}
		919
		920	sub object_freezer_as_string {
		921	my ($rdata, $objs) = @_;
		922
		923	use Data::Dumper;
		924
		925	$$rdata . Dumper $objs
401	}	926	}
402		927
403	sub object_thawer_load {	928	sub object_thawer_load {
404	my ($filename) = @_;	929	my ($filename) = @_;
405		930
406	open my $fh, "<:raw:perlio", "$filename.pst"	931	my ($data, $av);
		932
		933	(aio_load $filename, $data) >= 0
407	or return;	934	or return;
408		935
409	eval { local $/; (Storable::thaw <$fh>)->{objs} }	936	unless (aio_stat "$filename.pst") {
410	}	937	(aio_load "$filename.pst", $av) >= 0
411		938	or return;
412	attach_to_objects	939	$av = eval { (Storable::thaw $av)->{objs} };
413	prio => -1000000,
414	on_clone => sub {
415	my ($src, $dst) = @_;
416
417	@{$dst->registry} = @{$src->registry};
418
419	%$dst = %$src;
420
421	$dst->{_attachment} = [@{ $src->{_attachment} }]
422	if exists $src->{_attachment};
423	},	940	}
424	;	941
		942	warn sprintf "loading %s (%d)\n",
		943	$filename, length $data, scalar @{$av || []};#d#
		944	return ($data, $av);
		945	}
425		946
426	#############################################################################	947	#############################################################################
427	# old plug-in events	948	# command handling &c
428		949
429	sub inject_event {	950	=item cf::register_command $name => \&callback($ob,$args);
430	my $extension = shift;
431	my $event_code = shift;
432		951
433	my $cb = $hook[$event_code]{$extension}	952	Register a callback for execution when the client sends the user command
434	or return;	953	$name.
435		954
436	&$cb	955	=cut
437	}
438
439	sub inject_global_event {
440	my $event = shift;
441
442	my $cb = $hook[$event]
443	or return;
444
445	List::Util::max map &$_, values %$cb
446	}
447
448	sub inject_command {
449	my ($name, $obj, $params) = @_;
450
451	for my $cmd (@{ $command{$name} }) {
452	$cmd->[1]->($obj, $params);
453	}
454
455	-1
456	}
457		956
458	sub register_command {	957	sub register_command {
459	my ($name, $time, $cb) = @_;	958	my ($name, $cb) = @_;
460		959
461	my $caller = caller;	960	my $caller = caller;
462	#warn "registering command '$name/$time' to '$caller'";	961	#warn "registering command '$name/$time' to '$caller'";
463		962
464	push @{ $command{$name} }, [$time, $cb, $caller];	963	push @{ $COMMAND{$name} }, [$caller, $cb];
465	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
466	}	964	}
		965
		966	=item cf::register_extcmd $name => \&callback($pl,$packet);
		967
		968	Register a callbackf ro execution when the client sends an extcmd packet.
		969
		970	If the callback returns something, it is sent back as if reply was being
		971	called.
		972
		973	=cut
467		974
468	sub register_extcmd {	975	sub register_extcmd {
469	my ($name, $cb) = @_;	976	my ($name, $cb) = @_;
470		977
471	my $caller = caller;	978	$EXTCMD{$name} = $cb;
472	#warn "registering extcmd '$name' to '$caller'";
473
474	$extcmd{$name} = [$cb, $caller];
475	}	979	}
476		980
477	sub register {	981	cf::player->attach (
478	my ($base, $pkg) = @_;	982	on_command => sub {
		983	my ($pl, $name, $params) = @_;
479		984
480	#TODO	985	my $cb = $COMMAND{$name}
481	}	986	or return;
		987
		988	for my $cmd (@$cb) {
		989	$cmd->[1]->($pl->ob, $params);
		990	}
		991
		992	cf::override;
		993	},
		994	on_extcmd => sub {
		995	my ($pl, $buf) = @_;
		996
		997	my $msg = eval { from_json $buf };
		998
		999	if (ref $msg) {
		1000	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		1001	if (my %reply = $cb->($pl, $msg)) {
		1002	$pl->ext_reply ($msg->{msgid}, %reply);
		1003	}
		1004	}
		1005	} else {
		1006	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1007	}
		1008
		1009	cf::override;
		1010	},
		1011	);
482		1012
483	sub load_extension {	1013	sub load_extension {
484	my ($path) = @_;	1014	my ($path) = @_;
485		1015
486	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1016	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
487	my $base = $1;	1017	my $base = $1;
488	my $pkg = $1;	1018	my $pkg = $1;
489	$pkg =~ s/[^[:word:]]/_/g;	1019	$pkg =~ s/[^[:word:]]/_/g;
490	$pkg = "ext::$pkg";	1020	$pkg = "ext::$pkg";
491		1021
492	warn "loading '$path' into '$pkg'\n";	1022	warn "... loading '$path' into '$pkg'\n";
493		1023
494	open my $fh, "<:utf8", $path	1024	open my $fh, "<:utf8", $path
495	or die "$path: $!";	1025	or die "$path: $!";
496		1026
497	my $source =	1027	my $source =
…		…
499	. "#line 1 \"$path\"\n{\n"	1029	. "#line 1 \"$path\"\n{\n"
500	. (do { local $/; <$fh> })	1030	. (do { local $/; <$fh> })
501	. "\n};\n1";	1031	. "\n};\n1";
502		1032
503	eval $source	1033	eval $source
504	or die "$path: $@";	1034	or die $@ ? "$path: $@\n"
		1035	: "extension disabled.\n";
505		1036
506	push @exts, $pkg;	1037	push @EXTS, $pkg;
507	$ext_pkg{$base} = $pkg;
508
509	# no strict 'refs';
510	# @{"$pkg\::ISA"} = ext::;
511
512	register $base, $pkg;
513	}
514
515	sub unload_extension {
516	my ($pkg) = @_;
517
518	warn "removing extension $pkg\n";
519
520	# remove hooks
521	#TODO
522	# for my $idx (0 .. $#PLUGIN_EVENT) {
523	# delete $hook[$idx]{$pkg};
524	# }
525
526	# remove commands
527	for my $name (keys %command) {
528	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
529
530	if (@cb) {
531	$command{$name} = \@cb;
532	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
533	} else {
534	delete $command{$name};
535	delete $COMMAND{"$name\000"};
536	}
537	}
538
539	# remove extcmds
540	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
541	delete $extcmd{$name};
542	}
543
544	if (my $cb = $pkg->can ("unload")) {
545	eval {
546	$cb->($pkg);
547	1
548	} or warn "$pkg unloaded, but with errors: $@";
549	}
550
551	Symbol::delete_package $pkg;
552	}	1038	}
553		1039
554	sub load_extensions {	1040	sub load_extensions {
555	my $LIBDIR = maps_directory "perl";
556
557	for my $ext (<$LIBDIR/*.ext>) {	1041	for my $ext (<$LIBDIR/*.ext>) {
558	next unless -r $ext;	1042	next unless -r $ext;
559	eval {	1043	eval {
560	load_extension $ext;	1044	load_extension $ext;
561	1	1045	1
562	} or warn "$ext not loaded: $@";	1046	} or warn "$ext not loaded: $@";
563	}	1047	}
564	}	1048	}
565		1049
566	sub _perl_reload(&) {
567	my ($msg) = @_;
568
569	$msg->("reloading...");
570
571	eval {
572	# 1. cancel all watchers
573	$_->cancel for Event::all_watchers;
574
575	# 2. unload all extensions
576	for (@exts) {
577	$msg->("unloading <$_>");
578	unload_extension $_;
579	}
580
581	# 3. unload all modules loaded from $LIBDIR
582	while (my ($k, $v) = each %INC) {
583	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
584
585	$msg->("removing <$k>");
586	delete $INC{$k};
587
588	$k =~ s/\.pm$//;
589	$k =~ s/\//::/g;
590
591	if (my $cb = $k->can ("unload_module")) {
592	$cb->();
593	}
594
595	Symbol::delete_package $k;
596	}
597
598	# 4. get rid of safe::, as good as possible
599	Symbol::delete_package "safe::$_"
600	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
601
602	# 5. remove register_script_function callbacks
603	# TODO
604
605	# 6. unload cf.pm "a bit"
606	delete $INC{"cf.pm"};
607
608	# don't, removes xs symbols, too,
609	# and global variables created in xs
610	#Symbol::delete_package __PACKAGE__;
611
612	# 7. reload cf.pm
613	$msg->("reloading cf.pm");
614	require cf;
615	};
616	$msg->($@) if $@;
617
618	$msg->("reloaded");
619	};
620
621	sub perl_reload() {
622	_perl_reload {
623	warn $_[0];
624	print "$_[0]\n";
625	};
626	}
627
628	register_command "perl-reload", 0, sub {
629	my ($who, $arg) = @_;
630
631	if ($who->flag (FLAG_WIZ)) {
632	_perl_reload {
633	warn $_[0];
634	$who->message ($_[0]);
635	};
636	}
637	};
638
639	#############################################################################
640	# extcmd framework, basically convert ext <msg>
641	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
642
643	attach_to_players
644	on_extcmd => sub {
645	my ($pl, $buf) = @_;
646
647	my $msg = eval { from_json $buf };
648
649	if (ref $msg) {
650	if (my $cb = $extcmd{$msg->{msgtype}}) {
651	if (my %reply = $cb->[0]->($pl, $msg)) {
652	$pl->ext_reply ($msg->{msgid}, %reply);
653	}
654	}
655	} else {
656	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
657	}
658
659	cf::override;
660	},
661	;
662
663	#############################################################################	1050	#############################################################################
664	# load/save/clean perl data associated with a map	1051	# load/save/clean perl data associated with a map
665		1052
666	*cf::mapsupport::on_clean = sub {	1053	*cf::mapsupport::on_clean = sub {
667	my ($map) = @_;	1054	my ($map) = @_;
668		1055
669	my $path = $map->tmpname;	1056	my $path = $map->tmpname;
670	defined $path or return;	1057	defined $path or return;
671		1058
672	unlink "$path.cfperl";
673	unlink "$path.pst";	1059	unlink "$path.pst";
674	};	1060	};
675		1061
676	*cf::mapsupport::on_swapin =	1062	cf::map->attach (prio => -10000, package => cf::mapsupport::);
677	*cf::mapsupport::on_load = sub {	1063
		1064	#############################################################################
		1065
		1066	=head2 CORE EXTENSIONS
		1067
		1068	Functions and methods that extend core crossfire objects.
		1069
		1070	=cut
		1071
		1072	package cf::player;
		1073
		1074	use Coro::AIO;
		1075
		1076	=head3 cf::player
		1077
		1078	=over 4
		1079
		1080	=item cf::player::find $login
		1081
		1082	Returns the given player object, loading it if necessary (might block).
		1083
		1084	=cut
		1085
		1086	sub playerdir($) {
		1087	cf::localdir
		1088	. "/"
		1089	. cf::playerdir
		1090	. "/"
		1091	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1092	}
		1093
		1094	sub path($) {
		1095	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1096
		1097	(playerdir $login) . "/$login.pl"
		1098	}
		1099
		1100	sub find_active($) {
		1101	$cf::PLAYER{$_[0]}
		1102	and $cf::PLAYER{$_[0]}->active
		1103	and $cf::PLAYER{$_[0]}
		1104	}
		1105
		1106	sub exists($) {
		1107	my ($login) = @_;
		1108
		1109	$cf::PLAYER{$login}
		1110	or cf::sync_job { !aio_stat $login }
		1111	}
		1112
		1113	sub find($) {
		1114	return $cf::PLAYER{$_[0]} || do {
		1115	my $login = $_[0];
		1116
		1117	my $guard = cf::lock_acquire "user_find:$login";
		1118
		1119	$cf::PLAYER{$_[0]} || do {
		1120	my $pl = load_pl path $login
		1121	or return;
		1122	$cf::PLAYER{$login} = $pl
		1123	}
		1124	}
		1125	}
		1126
		1127	sub save($) {
		1128	my ($pl) = @_;
		1129
		1130	return if $pl->{deny_save};
		1131
		1132	my $path = path $pl;
		1133	my $guard = cf::lock_acquire "user_save:$path";
		1134
		1135	return if $pl->{deny_save};
		1136
		1137	aio_mkdir playerdir $pl, 0770;
		1138	$pl->{last_save} = $cf::RUNTIME;
		1139
		1140	$pl->save_pl ($path);
		1141	Coro::cede;
		1142	}
		1143
		1144	sub new($) {
		1145	my ($login) = @_;
		1146
		1147	my $self = create;
		1148
		1149	$self->ob->name ($login);
		1150	$self->{deny_save} = 1;
		1151
		1152	$cf::PLAYER{$login} = $self;
		1153
		1154	$self
		1155	}
		1156
		1157	=item $pl->quit_character
		1158
		1159	Nukes the player without looking back. If logged in, the connection will
		1160	be destroyed. May block for a long time.
		1161
		1162	=cut
		1163
		1164	sub quit_character {
		1165	my ($pl) = @_;
		1166
		1167	$pl->{deny_save} = 1;
		1168	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1169
		1170	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1171	$pl->deactivate;
		1172	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1173	$pl->ns->destroy if $pl->ns;
		1174
		1175	my $path = playerdir $pl;
		1176	my $temp = "$path~$cf::RUNTIME~deleting~";
		1177	aio_rename $path, $temp;
		1178	delete $cf::PLAYER{$pl->ob->name};
		1179	$pl->destroy;
		1180	IO::AIO::aio_rmtree $temp;
		1181	}
		1182
		1183	=item cf::player::list_logins
		1184
		1185	Returns am arrayref of all valid playernames in the system, can take a
		1186	while and may block, so not sync_job-capable, ever.
		1187
		1188	=cut
		1189
		1190	sub list_logins {
		1191	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1192	or return [];
		1193
		1194	my @logins;
		1195
		1196	for my $login (@$dirs) {
		1197	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1198	aio_read $fh, 0, 512, my $buf, 0 or next;
		1199	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1200
		1201	utf8::decode $login;
		1202	push @logins, $login;
		1203	}
		1204
		1205	\@logins
		1206	}
		1207
		1208	=item $player->maps
		1209
		1210	Returns an arrayref of cf::path's of all maps that are private for this
		1211	player. May block.
		1212
		1213	=cut
		1214
		1215	sub maps($) {
		1216	my ($pl) = @_;
		1217
		1218	my $files = aio_readdir playerdir $pl
		1219	or return;
		1220
		1221	my @paths;
		1222
		1223	for (@$files) {
		1224	utf8::decode $_;
		1225	next if /\.(?:pl|pst)$/;
		1226	next unless /^$PATH_SEP/o;
		1227
		1228	push @paths, new cf::path "~" . $pl->ob->name . "/" . $_;
		1229	}
		1230
		1231	\@paths
		1232	}
		1233
		1234	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1235
		1236	Sends an ext reply to the player.
		1237
		1238	=cut
		1239
		1240	sub ext_reply($$$%) {
		1241	my ($self, $id, %msg) = @_;
		1242
		1243	$msg{msgid} = $id;
		1244
		1245	$self->send ("ext " . cf::to_json \%msg);
		1246	}
		1247
		1248	package cf;
		1249
		1250	=back
		1251
		1252
		1253	=head3 cf::map
		1254
		1255	=over 4
		1256
		1257	=cut
		1258
		1259	package cf::map;
		1260
		1261	use Fcntl;
		1262	use Coro::AIO;
		1263
		1264	our $MAX_RESET = 3600;
		1265	our $DEFAULT_RESET = 3000;
		1266
		1267	sub generate_random_map {
		1268	my ($path, $rmp) = @_;
		1269
		1270	# mit "rum" bekleckern, nicht
		1271	cf::map::_create_random_map (
		1272	$path,
		1273	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1274	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1275	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1276	$rmp->{exit_on_final_map},
		1277	$rmp->{xsize}, $rmp->{ysize},
		1278	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1279	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1280	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1281	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1282	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1283	(cf::region::find $rmp->{region}), $rmp->{custom}
		1284	)
		1285	}
		1286
		1287	# and all this just because we cannot iterate over
		1288	# all maps in C++...
		1289	sub change_all_map_light {
		1290	my ($change) = @_;
		1291
		1292	$_->change_map_light ($change)
		1293	for grep $_->outdoor, values %cf::MAP;
		1294	}
		1295
		1296	sub load_map_header($) {
		1297	my ($path) = @_;
		1298
		1299	utf8::encode $path;
		1300	aio_open $path, O_RDONLY, 0
		1301	or return;
		1302
		1303	my $map = cf::map::new
		1304	or return;
		1305
		1306	# for better error messages only, will be overwritten later
		1307	$map->path ($path);
		1308
		1309	$map->load_header ($path)
		1310	or return;
		1311
		1312	$map->{load_path} = $path;
		1313
		1314	$map
		1315	}
		1316
		1317	sub find;
		1318	sub find {
		1319	my ($path, $origin) = @_;
		1320
		1321	#warn "find<$path,$origin>\n";#d#
		1322
		1323	$path = new cf::path $path, $origin && $origin->path;
		1324	my $key = $path->as_string;
		1325
		1326	cf::lock_wait "map_find:$key";
		1327
		1328	$cf::MAP{$key} || do {
		1329	my $guard = cf::lock_acquire "map_find:$key";
		1330
		1331	# do it the slow way
		1332	my $map = $path->load_temp;
		1333
		1334	Coro::cede;
		1335
		1336	if ($map) {
		1337	$map->last_access ((delete $map->{last_access})
		1338	|| $cf::RUNTIME); #d#
		1339	# safety
		1340	$map->{instantiate_time} = $cf::RUNTIME
		1341	if $map->{instantiate_time} > $cf::RUNTIME;
		1342	} else {
		1343	$map = $path->load_orig
		1344	or return;
		1345
		1346	$map->{load_original} = 1;
		1347	$map->{instantiate_time} = $cf::RUNTIME;
		1348	$map->last_access ($cf::RUNTIME);
		1349	$map->instantiate;
		1350
		1351	# per-player maps become, after loading, normal maps
		1352	$map->per_player (0) if $path->{user_rel};
		1353	}
		1354
		1355	$map->path ($key);
		1356	$map->{path} = $path;
		1357	$map->{last_save} = $cf::RUNTIME;
		1358
		1359	Coro::cede;
		1360
		1361	if ($map->should_reset) {
		1362	$map->reset;
		1363	undef $guard;
		1364	$map = find $path
		1365	or return;
		1366	}
		1367
		1368	$cf::MAP{$key} = $map
		1369	}
		1370	}
		1371
		1372	sub load {
		1373	my ($self) = @_;
		1374
		1375	my $path = $self->{path};
		1376	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1377
		1378	return if $self->in_memory != cf::MAP_SWAPPED;
		1379
		1380	$self->in_memory (cf::MAP_LOADING);
		1381
		1382	$self->alloc;
		1383	$self->load_objects ($self->{load_path}, 1)
		1384	or return;
		1385
		1386	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1387	if delete $self->{load_original};
		1388
		1389	if (my $uniq = $path->uniq_path) {
		1390	utf8::encode $uniq;
		1391	if (aio_open $uniq, O_RDONLY, 0) {
		1392	$self->clear_unique_items;
		1393	$self->load_objects ($uniq, 0);
		1394	}
		1395	}
		1396
		1397	Coro::cede;
		1398
		1399	# now do the right thing for maps
		1400	$self->link_multipart_objects;
		1401
		1402	if ($self->{path}->is_style_map) {
		1403	$self->{deny_save} = 1;
		1404	$self->{deny_reset} = 1;
		1405	} else {
		1406	$self->fix_auto_apply;
		1407	$self->decay_objects;
		1408	$self->update_buttons;
		1409	$self->set_darkness_map;
		1410	$self->difficulty ($self->estimate_difficulty)
		1411	unless $self->difficulty;
		1412	$self->activate;
		1413	}
		1414
		1415	Coro::cede;
		1416
		1417	$self->in_memory (cf::MAP_IN_MEMORY);
		1418	}
		1419
		1420	# find and load all maps in the 3x3 area around a map
		1421	sub load_diag {
678	my ($map) = @_;	1422	my ($map) = @_;
679		1423
680	my $path = $map->tmpname;	1424	my @diag; # diagonal neighbours
681	$path = $map->path unless defined $path;
682		1425
683	open my $fh, "<:raw", "$path.cfperl"	1426	for (0 .. 3) {
684	or return; # no perl data	1427	my $neigh = $map->tile_path ($_)
		1428	or next;
		1429	$neigh = find $neigh, $map
		1430	or next;
		1431	$neigh->load;
685		1432
686	my $data = Storable::thaw do { local $/; <$fh> };	1433	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1434	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1435	}
687		1436
688	$data->{version} <= 1	1437	for (@diag) {
689	or return; # too new	1438	my $neigh = find @$_
		1439	or next;
		1440	$neigh->load;
		1441	}
		1442	}
690		1443
691	$map->_set_obs ($data->{obs});	1444	sub find_sync {
		1445	my ($path, $origin) = @_;
		1446
		1447	cf::sync_job { find $path, $origin }
		1448	}
		1449
		1450	sub do_load_sync {
		1451	my ($map) = @_;
		1452
		1453	cf::sync_job { $map->load };
		1454	}
		1455
		1456	our %MAP_PREFETCH;
		1457	our $MAP_PREFETCHER = Coro::async {
		1458	while () {
		1459	while (%MAP_PREFETCH) {
		1460	my $key = each %MAP_PREFETCH
		1461	or next;
		1462	my $path = delete $MAP_PREFETCH{$key};
		1463
		1464	my $map = find $path
		1465	or next;
		1466	$map->load;
		1467	}
		1468	Coro::schedule;
		1469	}
692	};	1470	};
693		1471
694	attach_to_maps prio => -10000, package => cf::mapsupport::;	1472	sub find_async {
		1473	my ($path, $origin) = @_;
695		1474
696	#############################################################################	1475	$path = new cf::path $path, $origin && $origin->path;
697	# load/save perl data associated with player->ob objects	1476	my $key = $path->as_string;
698		1477
699	sub all_objects(@) {	1478	if (my $map = $cf::MAP{$key}) {
700	@_, map all_objects ($_->inv), @_	1479	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
701	}
702
703	attach_to_players
704	on_load => sub {
705	my ($pl, $path) = @_;
706
707	for my $o (all_objects $pl->ob) {
708	if (my $value = $o->get_ob_key_value ("_perl_data")) {
709	$o->set_ob_key_value ("_perl_data");
710
711	%$o = %{ Storable::thaw pack "H*", $value };
712	}
713	}
714	},	1480	}
715	;
716		1481
717	#############################################################################	1482	$MAP_PREFETCH{$key} = $path;
718	# core extensions - in perl	1483	$MAP_PREFETCHER->ready;
719		1484
720	=item cf::player::exists $login	1485	()
721
722	Returns true when the given account exists.
723
724	=cut
725
726	sub cf::player::exists($) {
727	cf::player::find $_[0]
728	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
729	}	1486	}
730		1487
		1488	sub save {
		1489	my ($self) = @_;
		1490
		1491	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1492
		1493	$self->{last_save} = $cf::RUNTIME;
		1494
		1495	return unless $self->dirty;
		1496
		1497	my $save = $self->{path}->save_path; utf8::encode $save;
		1498	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1499
		1500	$self->{load_path} = $save;
		1501
		1502	return if $self->{deny_save};
		1503
		1504	local $self->{last_access} = $self->last_access;#d#
		1505
		1506	cf::async {
		1507	$_->contr->save for $self->players;
		1508	};
		1509
		1510	if ($uniq) {
		1511	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1512	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1513	} else {
		1514	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1515	}
		1516	}
		1517
		1518	sub swap_out {
		1519	my ($self) = @_;
		1520
		1521	# save first because save cedes
		1522	$self->save;
		1523
		1524	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1525
		1526	return if $self->players;
		1527	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1528	return if $self->{deny_save};
		1529
		1530	$self->clear;
		1531	$self->in_memory (cf::MAP_SWAPPED);
		1532	}
		1533
		1534	sub reset_at {
		1535	my ($self) = @_;
		1536
		1537	# TODO: safety, remove and allow resettable per-player maps
		1538	return 1e99 if $self->{path}{user_rel};
		1539	return 1e99 if $self->{deny_reset};
		1540
		1541	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1542	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1543
		1544	$time + $to
		1545	}
		1546
		1547	sub should_reset {
		1548	my ($self) = @_;
		1549
		1550	$self->reset_at <= $cf::RUNTIME
		1551	}
		1552
		1553	sub unlink_save {
		1554	my ($self) = @_;
		1555
		1556	utf8::encode (my $save = $self->{path}->save_path);
		1557	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1558	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1559	}
		1560
		1561	sub rename {
		1562	my ($self, $new_path) = @_;
		1563
		1564	$self->unlink_save;
		1565
		1566	delete $cf::MAP{$self->path};
		1567	$self->{path} = new cf::path $new_path;
		1568	$self->path ($self->{path}->as_string);
		1569	$cf::MAP{$self->path} = $self;
		1570
		1571	$self->save;
		1572	}
		1573
		1574	sub reset {
		1575	my ($self) = @_;
		1576
		1577	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1578
		1579	return if $self->players;
		1580	return if $self->{path}{user_rel};#d#
		1581
		1582	warn "resetting map ", $self->path;#d#
		1583
		1584	delete $cf::MAP{$self->path};
		1585
		1586	$_->clear_links_to ($self) for values %cf::MAP;
		1587
		1588	$self->unlink_save;
		1589	$self->destroy;
		1590	}
		1591
		1592	my $nuke_counter = "aaaa";
		1593
		1594	sub nuke {
		1595	my ($self) = @_;
		1596
		1597	$self->{deny_save} = 1;
		1598	$self->reset_timeout (1);
		1599	$self->rename ("{nuke}/" . ($nuke_counter++));
		1600	$self->reset; # polite request, might not happen
		1601	}
		1602
		1603	sub customise_for {
		1604	my ($map, $ob) = @_;
		1605
		1606	if ($map->per_player) {
		1607	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1608	}
		1609
		1610	$map
		1611	}
		1612
		1613	=item cf::map::unique_maps
		1614
		1615	Returns an arrayref of cf::path's of all shared maps that have
		1616	instantiated unique items. May block.
		1617
		1618	=cut
		1619
		1620	sub unique_maps() {
		1621	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1622	or return;
		1623
		1624	my @paths;
		1625
		1626	for (@$files) {
		1627	utf8::decode $_;
		1628	next if /\.pst$/;
		1629	next unless /^$PATH_SEP/o;
		1630
		1631	push @paths, new cf::path $_;
		1632	}
		1633
		1634	\@paths
		1635	}
		1636
		1637	package cf;
		1638
		1639	=back
		1640
		1641	=head3 cf::object
		1642
		1643	=cut
		1644
		1645	package cf::object;
		1646
		1647	=over 4
		1648
		1649	=item $ob->inv_recursive
		1650
		1651	Returns the inventory of the object _and_ their inventories, recursively.
		1652
		1653	=cut
		1654
		1655	sub inv_recursive_;
		1656	sub inv_recursive_ {
		1657	map { $_, inv_recursive_ $_->inv } @_
		1658	}
		1659
		1660	sub inv_recursive {
		1661	inv_recursive_ inv $_[0]
		1662	}
		1663
		1664	package cf;
		1665
		1666	=back
		1667
		1668	=head3 cf::object::player
		1669
		1670	=over 4
		1671
731	=item $player->reply ($npc, $msg[, $flags])	1672	=item $player_object->reply ($npc, $msg[, $flags])
732		1673
733	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1674	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
734	can be C<undef>. Does the right thing when the player is currently in a	1675	can be C<undef>. Does the right thing when the player is currently in a
735	dialogue with the given NPC character.	1676	dialogue with the given NPC character.
736		1677
737	=cut	1678	=cut
738		1679
739	# rough implementation of a future "reply" method that works	1680	# rough implementation of a future "reply" method that works
740	# with dialog boxes.	1681	# with dialog boxes.
		1682	#TODO: the first argument must go, split into a $npc->reply_to ( method
741	sub cf::object::player::reply($$$;$) {	1683	sub cf::object::player::reply($$$;$) {
742	my ($self, $npc, $msg, $flags) = @_;	1684	my ($self, $npc, $msg, $flags) = @_;
743		1685
744	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1686	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
745		1687
…		…
749	$msg = $npc->name . " says: $msg" if $npc;	1691	$msg = $npc->name . " says: $msg" if $npc;
750	$self->message ($msg, $flags);	1692	$self->message ($msg, $flags);
751	}	1693	}
752	}	1694	}
753		1695
754	=item $player->ext_reply ($msgid, $msgtype, %msg)	1696	=item $player_object->may ("access")
755		1697
756	Sends an ext reply to the player.	1698	Returns wether the given player is authorized to access resource "access"
		1699	(e.g. "command_wizcast").
757		1700
758	=cut	1701	=cut
759		1702
760	sub cf::player::ext_reply($$$%) {	1703	sub cf::object::player::may {
		1704	my ($self, $access) = @_;
		1705
		1706	$self->flag (cf::FLAG_WIZ) ||
		1707	(ref $cf::CFG{"may_$access"}
		1708	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1709	: $cf::CFG{"may_$access"})
		1710	}
		1711
		1712	=item $player_object->enter_link
		1713
		1714	Freezes the player and moves him/her to a special map (C<{link}>).
		1715
		1716	The player should be reaosnably safe there for short amounts of time. You
		1717	I<MUST> call C<leave_link> as soon as possible, though.
		1718
		1719	=item $player_object->leave_link ($map, $x, $y)
		1720
		1721	Moves the player out of the specila link map onto the given map. If the
		1722	map is not valid (or omitted), the player will be moved back to the
		1723	location he/she was before the call to C<enter_link>, or, if that fails,
		1724	to the emergency map position.
		1725
		1726	Might block.
		1727
		1728	=cut
		1729
		1730	sub cf::object::player::enter_link {
		1731	my ($self) = @_;
		1732
		1733	$self->deactivate_recursive;
		1734
		1735	return if $self->map == $LINK_MAP;
		1736
		1737	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1738	if $self->map;
		1739
		1740	$self->enter_map ($LINK_MAP, 20, 20);
		1741	}
		1742
		1743	sub cf::object::player::leave_link {
		1744	my ($self, $map, $x, $y) = @_;
		1745
		1746	my $link_pos = delete $self->{_link_pos};
		1747
		1748	unless ($map) {
		1749	# restore original map position
		1750	($map, $x, $y) = @{ $link_pos || [] };
		1751	$map = cf::map::find $map;
		1752
		1753	unless ($map) {
		1754	($map, $x, $y) = @$EMERGENCY_POSITION;
		1755	$map = cf::map::find $map
		1756	or die "FATAL: cannot load emergency map\n";
		1757	}
		1758	}
		1759
		1760	($x, $y) = (-1, -1)
		1761	unless (defined $x) && (defined $y);
		1762
		1763	# use -1 or undef as default coordinates, not 0, 0
		1764	($x, $y) = ($map->enter_x, $map->enter_y)
		1765	if $x <=0 && $y <= 0;
		1766
		1767	$map->load;
		1768	$map->load_diag;
		1769
		1770	return unless $self->contr->active;
		1771	$self->activate_recursive;
		1772	$self->enter_map ($map, $x, $y);
		1773	}
		1774
		1775	cf::player->attach (
		1776	on_logout => sub {
		1777	my ($pl) = @_;
		1778
		1779	# abort map switching before logout
		1780	if ($pl->ob->{_link_pos}) {
		1781	cf::sync_job {
		1782	$pl->ob->leave_link
		1783	};
		1784	}
		1785	},
		1786	on_login => sub {
		1787	my ($pl) = @_;
		1788
		1789	# try to abort aborted map switching on player login :)
		1790	# should happen only on crashes
		1791	if ($pl->ob->{_link_pos}) {
		1792	$pl->ob->enter_link;
		1793	(async {
		1794	# we need this sleep as the login has a concurrent enter_exit running
		1795	# and this sleep increases chances of the player not ending up in scorn
		1796	$pl->ob->reply (undef,
		1797	"There was an internal problem at your last logout, "
		1798	. "the server will try to bring you to your intended destination in a second.",
		1799	cf::NDI_RED);
		1800	Coro::Timer::sleep 1;
		1801	$pl->ob->leave_link;
		1802	})->prio (2);
		1803	}
		1804	},
		1805	);
		1806
		1807	=item $player_object->goto ($path, $x, $y)
		1808
		1809	=cut
		1810
		1811	sub cf::object::player::goto {
		1812	my ($self, $path, $x, $y) = @_;
		1813
		1814	$path = new cf::path $path;
		1815
		1816	$self->enter_link;
		1817
		1818	(async {
		1819	my $map = cf::map::find $path->as_string;
		1820	$map = $map->customise_for ($self) if $map;
		1821
		1822	# warn "entering ", $map->path, " at ($x, $y)\n"
		1823	# if $map;
		1824
		1825	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1826
		1827	$self->leave_link ($map, $x, $y);
		1828	})->prio (1);
		1829	}
		1830
		1831	=item $player_object->enter_exit ($exit_object)
		1832
		1833	=cut
		1834
		1835	sub parse_random_map_params {
		1836	my ($spec) = @_;
		1837
		1838	my $rmp = { # defaults
		1839	xsize => 10,
		1840	ysize => 10,
		1841	};
		1842
		1843	for (split /\n/, $spec) {
		1844	my ($k, $v) = split /\s+/, $_, 2;
		1845
		1846	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1847	}
		1848
		1849	$rmp
		1850	}
		1851
		1852	sub prepare_random_map {
		1853	my ($exit) = @_;
		1854
		1855	# all this does is basically replace the /! path by
		1856	# a new random map path (?random/...) with a seed
		1857	# that depends on the exit object
		1858
		1859	my $rmp = parse_random_map_params $exit->msg;
		1860
		1861	if ($exit->map) {
		1862	$rmp->{region} = $exit->map->region_name;
		1863	$rmp->{origin_map} = $exit->map->path;
		1864	$rmp->{origin_x} = $exit->x;
		1865	$rmp->{origin_y} = $exit->y;
		1866	}
		1867
		1868	$rmp->{random_seed} ||= $exit->random_seed;
		1869
		1870	my $data = cf::to_json $rmp;
		1871	my $md5 = Digest::MD5::md5_hex $data;
		1872
		1873	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1874	aio_write $fh, 0, (length $data), $data, 0;
		1875
		1876	$exit->slaying ("?random/$md5");
		1877	$exit->msg (undef);
		1878	}
		1879	}
		1880
		1881	sub cf::object::player::enter_exit {
761	my ($self, $id, %msg) = @_;	1882	my ($self, $exit) = @_;
762		1883
763	$msg{msgid} = $id;	1884	return unless $self->type == cf::PLAYER;
764		1885
765	$self->send ("ext " . to_json \%msg);	1886	$self->enter_link;
766	}
767		1887
768	#############################################################################	1888	(async {
769	# map scripting support	1889	$self->deactivate_recursive; # just to be sure
		1890	unless (eval {
		1891	prepare_random_map $exit
		1892	if $exit->slaying eq "/!";
		1893
		1894	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1895	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1896
		1897	1;
		1898	}) {
		1899	$self->message ("Something went wrong deep within the crossfire server. "
		1900	. "I'll try to bring you back to the map you were before. "
		1901	. "Please report this to the dungeon master!",
		1902	cf::NDI_UNIQUE | cf::NDI_RED);
		1903
		1904	warn "ERROR in enter_exit: $@";
		1905	$self->leave_link;
		1906	}
		1907	})->prio (1);
		1908	}
		1909
		1910	=head3 cf::client
		1911
		1912	=over 4
		1913
		1914	=item $client->send_drawinfo ($text, $flags)
		1915
		1916	Sends a drawinfo packet to the client. Circumvents output buffering so
		1917	should not be used under normal circumstances.
		1918
		1919	=cut
		1920
		1921	sub cf::client::send_drawinfo {
		1922	my ($self, $text, $flags) = @_;
		1923
		1924	utf8::encode $text;
		1925	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1926	}
		1927
		1928
		1929	=item $success = $client->query ($flags, "text", \&cb)
		1930
		1931	Queues a query to the client, calling the given callback with
		1932	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1933	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1934
		1935	Queries can fail, so check the return code. Or don't, as queries will become
		1936	reliable at some point in the future.
		1937
		1938	=cut
		1939
		1940	sub cf::client::query {
		1941	my ($self, $flags, $text, $cb) = @_;
		1942
		1943	return unless $self->state == ST_PLAYING
		1944	|| $self->state == ST_SETUP
		1945	|| $self->state == ST_CUSTOM;
		1946
		1947	$self->state (ST_CUSTOM);
		1948
		1949	utf8::encode $text;
		1950	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1951
		1952	$self->send_packet ($self->{query_queue}[0][0])
		1953	if @{ $self->{query_queue} } == 1;
		1954	}
		1955
		1956	cf::client->attach (
		1957	on_reply => sub {
		1958	my ($ns, $msg) = @_;
		1959
		1960	# this weird shuffling is so that direct followup queries
		1961	# get handled first
		1962	my $queue = delete $ns->{query_queue}
		1963	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1964
		1965	(shift @$queue)->[1]->($msg);
		1966
		1967	push @{ $ns->{query_queue} }, @$queue;
		1968
		1969	if (@{ $ns->{query_queue} } == @$queue) {
		1970	if (@$queue) {
		1971	$ns->send_packet ($ns->{query_queue}[0][0]);
		1972	} else {
		1973	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1974	}
		1975	}
		1976	},
		1977	);
		1978
		1979	=item $client->async (\&cb)
		1980
		1981	Create a new coroutine, running the specified callback. The coroutine will
		1982	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1983	or loss of connection).
		1984
		1985	=cut
		1986
		1987	sub cf::client::async {
		1988	my ($self, $cb) = @_;
		1989
		1990	my $coro = &Coro::async ($cb);
		1991
		1992	$coro->on_destroy (sub {
		1993	delete $self->{_coro}{$coro+0};
		1994	});
		1995
		1996	$self->{_coro}{$coro+0} = $coro;
		1997
		1998	$coro
		1999	}
		2000
		2001	cf::client->attach (
		2002	on_destroy => sub {
		2003	my ($ns) = @_;
		2004
		2005	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2006	},
		2007	);
		2008
		2009	=back
		2010
		2011
		2012	=head2 SAFE SCRIPTING
		2013
		2014	Functions that provide a safe environment to compile and execute
		2015	snippets of perl code without them endangering the safety of the server
		2016	itself. Looping constructs, I/O operators and other built-in functionality
		2017	is not available in the safe scripting environment, and the number of
		2018	functions and methods that can be called is greatly reduced.
		2019
		2020	=cut
770		2021
771	our $safe = new Safe "safe";	2022	our $safe = new Safe "safe";
772	our $safe_hole = new Safe::Hole;	2023	our $safe_hole = new Safe::Hole;
773		2024
774	$SIG{FPE} = 'IGNORE';	2025	$SIG{FPE} = 'IGNORE';
775		2026
776	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2027	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
777		2028
778	# here we export the classes and methods available to script code	2029	# here we export the classes and methods available to script code
779		2030
		2031	=pod
		2032
		2033	The following fucntions and emthods are available within a safe environment:
		2034
		2035	cf::object contr pay_amount pay_player map
		2036	cf::object::player player
		2037	cf::player peaceful
		2038	cf::map trigger
		2039
		2040	=cut
		2041
780	for (	2042	for (
781	["cf::object" => qw(contr pay_amount pay_player)],	2043	["cf::object" => qw(contr pay_amount pay_player map)],
782	["cf::object::player" => qw(player)],	2044	["cf::object::player" => qw(player)],
783	["cf::player" => qw(peaceful)],	2045	["cf::player" => qw(peaceful)],
		2046	["cf::map" => qw(trigger)],
784	) {	2047	) {
785	no strict 'refs';	2048	no strict 'refs';
786	my ($pkg, @funs) = @$_;	2049	my ($pkg, @funs) = @$_;
787	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2050	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
788	for @funs;	2051	for @funs;
789	}	2052	}
		2053
		2054	=over 4
		2055
		2056	=item @retval = safe_eval $code, [var => value, ...]
		2057
		2058	Compiled and executes the given perl code snippet. additional var/value
		2059	pairs result in temporary local (my) scalar variables of the given name
		2060	that are available in the code snippet. Example:
		2061
		2062	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2063
		2064	=cut
790		2065
791	sub safe_eval($;@) {	2066	sub safe_eval($;@) {
792	my ($code, %vars) = @_;	2067	my ($code, %vars) = @_;
793		2068
794	my $qcode = $code;	2069	my $qcode = $code;
…		…
817	}	2092	}
818		2093
819	wantarray ? @res : $res[0]	2094	wantarray ? @res : $res[0]
820	}	2095	}
821		2096
		2097	=item cf::register_script_function $function => $cb
		2098
		2099	Register a function that can be called from within map/npc scripts. The
		2100	function should be reasonably secure and should be put into a package name
		2101	like the extension.
		2102
		2103	Example: register a function that gets called whenever a map script calls
		2104	C<rent::overview>, as used by the C<rent> extension.
		2105
		2106	cf::register_script_function "rent::overview" => sub {
		2107	...
		2108	};
		2109
		2110	=cut
		2111
822	sub register_script_function {	2112	sub register_script_function {
823	my ($fun, $cb) = @_;	2113	my ($fun, $cb) = @_;
824		2114
825	no strict 'refs';	2115	no strict 'refs';
826	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2116	*{"safe::$fun"} = $safe_hole->wrap ($cb);
827	}	2117	}
828		2118
		2119	=back
		2120
		2121	=cut
		2122
		2123	#############################################################################
		2124
		2125	=head2 EXTENSION DATABASE SUPPORT
		2126
		2127	Crossfire maintains a very simple database for extension use. It can
		2128	currently store anything that can be serialised using Storable, which
		2129	excludes objects.
		2130
		2131	The parameter C<$family> should best start with the name of the extension
		2132	using it, it should be unique.
		2133
		2134	=over 4
		2135
		2136	=item $hashref = cf::db_get $family
		2137
		2138	Return a hashref for use by the extension C<$family>, which can be
		2139	modified. After modifications, you have to call C<cf::db_dirty> or
		2140	C<cf::db_sync>.
		2141
		2142	=item $value = cf::db_get $family => $key
		2143
		2144	Returns a single value from the database
		2145
		2146	=item cf::db_put $family => $hashref
		2147
		2148	Stores the given family hashref into the database. Updates are delayed, if
		2149	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2150
		2151	=item cf::db_put $family => $key => $value
		2152
		2153	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2154	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2155
		2156	=item cf::db_dirty
		2157
		2158	Marks the database as dirty, to be updated at a later time.
		2159
		2160	=item cf::db_sync
		2161
		2162	Immediately write the database to disk I<if it is dirty>.
		2163
		2164	=cut
		2165
		2166	our $DB;
		2167
		2168	{
		2169	my $path = cf::localdir . "/database.pst";
		2170
		2171	sub db_load() {
		2172	$DB = stat $path ? Storable::retrieve $path : { };
		2173	}
		2174
		2175	my $pid;
		2176
		2177	sub db_save() {
		2178	waitpid $pid, 0 if $pid;
		2179	if (0 == ($pid = fork)) {
		2180	$DB->{_meta}{version} = 1;
		2181	Storable::nstore $DB, "$path~";
		2182	rename "$path~", $path;
		2183	cf::_exit 0 if defined $pid;
		2184	}
		2185	}
		2186
		2187	my $dirty;
		2188
		2189	sub db_sync() {
		2190	db_save if $dirty;
		2191	undef $dirty;
		2192	}
		2193
		2194	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2195	db_sync;
		2196	});
		2197
		2198	sub db_dirty() {
		2199	$dirty = 1;
		2200	$idle->start;
		2201	}
		2202
		2203	sub db_get($;$) {
		2204	@_ >= 2
		2205	? $DB->{$_[0]}{$_[1]}
		2206	: ($DB->{$_[0]} ||= { })
		2207	}
		2208
		2209	sub db_put($$;$) {
		2210	if (@_ >= 3) {
		2211	$DB->{$_[0]}{$_[1]} = $_[2];
		2212	} else {
		2213	$DB->{$_[0]} = $_[1];
		2214	}
		2215	db_dirty;
		2216	}
		2217
		2218	cf::global->attach (
		2219	prio => 10000,
		2220	on_cleanup => sub {
		2221	db_sync;
		2222	},
		2223	);
		2224	}
		2225
829	#############################################################################	2226	#############################################################################
830	# the server's main()	2227	# the server's main()
831		2228
		2229	sub cfg_load {
		2230	open my $fh, "<:utf8", cf::confdir . "/config"
		2231	or return;
		2232
		2233	local $/;
		2234	*CFG = YAML::Syck::Load <$fh>;
		2235
		2236	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2237
		2238	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2239	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2240
		2241	if (exists $CFG{mlockall}) {
		2242	eval {
		2243	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2244	and die "WARNING: m(un)lockall failed: $!\n";
		2245	};
		2246	warn $@ if $@;
		2247	}
		2248	}
		2249
832	sub main {	2250	sub main {
		2251	# we must not ever block the main coroutine
		2252	local $Coro::idle = sub {
		2253	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2254	async { Event::one_event };
		2255	};
		2256
		2257	cfg_load;
		2258	db_load;
		2259	load_extensions;
833	Event::loop;	2260	Event::loop;
834	}	2261	}
835		2262
836	#############################################################################	2263	#############################################################################
837	# initialisation	2264	# initialisation and cleanup
838		2265
839	register "<global>", __PACKAGE__;	2266	# install some emergency cleanup handlers
		2267	BEGIN {
		2268	for my $signal (qw(INT HUP TERM)) {
		2269	Event->signal (
		2270	data => WF_AUTOCANCEL,
		2271	signal => $signal,
		2272	cb => sub {
		2273	cf::cleanup "SIG$signal";
		2274	},
		2275	);
		2276	}
		2277	}
		2278
		2279	sub emergency_save() {
		2280	my $freeze_guard = cf::freeze_mainloop;
		2281
		2282	warn "enter emergency perl save\n";
		2283
		2284	cf::sync_job {
		2285	# use a peculiar iteration method to avoid tripping on perl
		2286	# refcount bugs in for. also avoids problems with players
		2287	# and maps saved/Destroyed asynchronously.
		2288	warn "begin emergency player save\n";
		2289	for my $login (keys %cf::PLAYER) {
		2290	my $pl = $cf::PLAYER{$login} or next;
		2291	$pl->valid or next;
		2292	$pl->save;
		2293	}
		2294	warn "end emergency player save\n";
		2295
		2296	warn "begin emergency map save\n";
		2297	for my $path (keys %cf::MAP) {
		2298	my $map = $cf::MAP{$path} or next;
		2299	$map->valid or next;
		2300	$map->save;
		2301	}
		2302	warn "end emergency map save\n";
		2303	};
		2304
		2305	warn "leave emergency perl save\n";
		2306	}
		2307
		2308	sub reload() {
		2309	# can/must only be called in main
		2310	if ($Coro::current != $Coro::main) {
		2311	warn "can only reload from main coroutine\n";
		2312	return;
		2313	}
		2314
		2315	warn "reloading...";
		2316
		2317	warn "freezing server";
		2318	my $guard = freeze_mainloop;
		2319	cf::emergency_save;
		2320
		2321	warn "sync database to disk";
		2322	cf::db_sync;
		2323	IO::AIO::flush;
		2324
		2325	eval {
		2326	# if anything goes wrong in here, we should simply crash as we already saved
		2327
		2328	warn "cancel all watchers";
		2329	for (Event::all_watchers) {
		2330	$_->cancel if $_->data & WF_AUTOCANCEL;
		2331	}
		2332
		2333	warn "cancel all extension coros";
		2334	$_->cancel for values %EXT_CORO;
		2335	%EXT_CORO = ();
		2336
		2337	warn "remove commands";
		2338	%COMMAND = ();
		2339
		2340	warn "remove ext commands";
		2341	%EXTCMD = ();
		2342
		2343	warn "unload/nuke all extensions";
		2344	for my $pkg (@EXTS) {
		2345	warn "... unloading $pkg";
		2346
		2347	if (my $cb = $pkg->can ("unload")) {
		2348	eval {
		2349	$cb->($pkg);
		2350	1
		2351	} or warn "$pkg unloaded, but with errors: $@";
		2352	}
		2353
		2354	warn "... nuking $pkg";
		2355	Symbol::delete_package $pkg;
		2356	}
		2357
		2358	warn "unload all perl modules loaded from $LIBDIR";
		2359	while (my ($k, $v) = each %INC) {
		2360	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2361
		2362	warn "removing <$k>";
		2363	delete $INC{$k};
		2364
		2365	$k =~ s/\.pm$//;
		2366	$k =~ s/\//::/g;
		2367
		2368	if (my $cb = $k->can ("unload_module")) {
		2369	$cb->();
		2370	}
		2371
		2372	Symbol::delete_package $k;
		2373	}
		2374
		2375	warn "get rid of safe::, as good as possible";
		2376	Symbol::delete_package "safe::$_"
		2377	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2378
		2379	warn "unload cf.pm \"a bit\"";
		2380	delete $INC{"cf.pm"};
		2381
		2382	# don't, removes xs symbols, too,
		2383	# and global variables created in xs
		2384	#Symbol::delete_package __PACKAGE__;
		2385
		2386	warn "reloading cf.pm";
		2387	require cf;
		2388	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2389
		2390	warn "load config and database again";
		2391	cf::cfg_load;
		2392	cf::db_load;
		2393
		2394	warn "load extensions";
		2395	cf::load_extensions;
		2396
		2397	warn "reattach attachments to objects/players";
		2398	_global_reattach;
		2399	warn "reattach attachments to maps";
		2400	reattach $_ for values %MAP;
		2401	};
		2402
		2403	if ($@) {
		2404	warn $@;
		2405	warn "error while reloading, exiting.";
		2406	exit 1;
		2407	}
		2408
		2409	warn "reloaded";
		2410	};
		2411
		2412	#############################################################################
		2413
		2414	unless ($LINK_MAP) {
		2415	$LINK_MAP = cf::map::new;
		2416
		2417	$LINK_MAP->width (41);
		2418	$LINK_MAP->height (41);
		2419	$LINK_MAP->alloc;
		2420	$LINK_MAP->path ("{link}");
		2421	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2422	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2423
		2424	# dirty hack because... archetypes are not yet loaded
		2425	Event->timer (
		2426	after => 10,
		2427	cb => sub {
		2428	$_[0]->w->cancel;
		2429
		2430	# provide some exits "home"
		2431	my $exit = cf::object::new "exit";
		2432
		2433	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2434	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2435	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2436
		2437	$LINK_MAP->insert ($exit->clone, 19, 19);
		2438	$LINK_MAP->insert ($exit->clone, 19, 20);
		2439	$LINK_MAP->insert ($exit->clone, 19, 21);
		2440	$LINK_MAP->insert ($exit->clone, 20, 19);
		2441	$LINK_MAP->insert ($exit->clone, 20, 21);
		2442	$LINK_MAP->insert ($exit->clone, 21, 19);
		2443	$LINK_MAP->insert ($exit->clone, 21, 20);
		2444	$LINK_MAP->insert ($exit->clone, 21, 21);
		2445
		2446	$exit->destroy;
		2447	});
		2448
		2449	$LINK_MAP->{deny_save} = 1;
		2450	$LINK_MAP->{deny_reset} = 1;
		2451
		2452	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2453	}
		2454
		2455	register_command "reload" => sub {
		2456	my ($who, $arg) = @_;
		2457
		2458	if ($who->flag (FLAG_WIZ)) {
		2459	$who->message ("start of reload.");
		2460	reload;
		2461	$who->message ("end of reload.");
		2462	}
		2463	};
840		2464
841	unshift @INC, $LIBDIR;	2465	unshift @INC, $LIBDIR;
842		2466
843	load_extensions;
844
845	$TICK_WATCHER = Event->timer (	2467	$TICK_WATCHER = Event->timer (
		2468	reentrant => 0,
846	prio => 1,	2469	prio => 0,
847	at => $NEXT_TICK || 1,	2470	at => $NEXT_TICK || $TICK,
		2471	data => WF_AUTOCANCEL,
848	cb => sub {	2472	cb => sub {
849	cf::server_tick; # one server iteration	2473	cf::server_tick; # one server iteration
850		2474	$RUNTIME += $TICK;
851	my $NOW = Event::time;
852	$NEXT_TICK += $TICK;	2475	$NEXT_TICK += $TICK;
853		2476
		2477	$WAIT_FOR_TICK->broadcast;
		2478	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2479
854	# if we are delayed by four ticks, skip them all	2480	# if we are delayed by four ticks or more, skip them all
855	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2481	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
856		2482
857	$TICK_WATCHER->at ($NEXT_TICK);	2483	$TICK_WATCHER->at ($NEXT_TICK);
858	$TICK_WATCHER->start;	2484	$TICK_WATCHER->start;
859	},	2485	},
860	);	2486	);
861		2487
862	_reload_2;	2488	IO::AIO::max_poll_time $TICK * 0.2;
		2489
		2490	Event->io (
		2491	fd => IO::AIO::poll_fileno,
		2492	poll => 'r',
		2493	prio => 5,
		2494	data => WF_AUTOCANCEL,
		2495	cb => \&IO::AIO::poll_cb,
		2496	);
		2497
		2498	Event->timer (
		2499	data => WF_AUTOCANCEL,
		2500	after => 0,
		2501	interval => 10,
		2502	cb => sub {
		2503	(Coro::unblock_sub {
		2504	write_runtime
		2505	or warn "ERROR: unable to write runtime file: $!";
		2506	})->();
		2507	},
		2508	);
		2509
		2510	END { cf::emergency_save }
863		2511
864	1	2512	1
865		2513

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