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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.83 by root, Mon Dec 11 01:30:41 2006 UTC vs.
Revision 1.161 by root, Thu Jan 11 00:16:58 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;
10	use IO::AIO ();	23	use IO::AIO 2.32 ();
11	use YAML::Syck ();	24	use YAML::Syck ();
12	use Time::HiRes;	25	use Time::HiRes;
13	use Event;	26
14	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
		28
		29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	32	$YAML::Syck::ImplicitUnicode = 1;
18		33
19	use strict;	34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20		35
21	_init_vars;
22
23	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
24	our @EVENT;	44	our @EVENT;
25	our $LIBDIR = maps_directory "perl";	45	our $LIBDIR = datadir . "/ext";
26		46
27	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
28	our $TICK_WATCHER;	48	our $TICK_WATCHER;
29	our $NEXT_TICK;	49	our $NEXT_TICK;
		50	our $NOW;
30		51
31	our %CFG;	52	our %CFG;
32		53
33	our $uptime;#d#	54	our $UPTIME; $UPTIME ||= time;
34	our $UPTIME;	55	our $RUNTIME;
35	$UPTIME ||= $uptime;#d#	56
36	$UPTIME ||= time;	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;
37		84
38	#############################################################################	85	#############################################################################
39		86
40	=head2 GLOBAL VARIABLES	87	=head2 GLOBAL VARIABLES
41		88
42	=over 4	89	=over 4
43		90
44	=item $cf::UPTIME	91	=item $cf::UPTIME
45		92
46	The timestamp of the server start (so not actually an uptime).	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.
47		99
48	=item $cf::LIBDIR	100	=item $cf::LIBDIR
49		101
50	The perl library directory, where extensions and cf-specific modules can	102	The perl library directory, where extensions and cf-specific modules can
51	be found. It will be added to C<@INC> automatically.	103	be found. It will be added to C<@INC> automatically.
52		104
		105	=item $cf::NOW
		106
		107	The time of the last (current) server tick.
		108
53	=item $cf::TICK	109	=item $cf::TICK
54		110
55	The interval between server ticks, in seconds.	111	The interval between server ticks, in seconds.
56		112
57	=item %cf::CFG	113	=item %cf::CFG
58		114
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	115	Configuration for the server, loaded from C</etc/crossfire/config>, or
60	from wherever your confdir points to.	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.
61		124
62	=back	125	=back
63		126
64	=cut	127	=cut
65		128
66	BEGIN {	129	BEGIN {
67	*CORE::GLOBAL::warn = sub {	130	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	131	my $msg = join "", @_;
		132	utf8::encode $msg;
		133
69	$msg .= "\n"	134	$msg .= "\n"
70	unless $msg =~ /\n$/;	135	unless $msg =~ /\n$/;
71		136
72	print STDERR "cfperl: $msg";
73	LOG llevError, "cfperl: $msg";	137	LOG llevError, $msg;
74	};	138	};
75	}	139	}
76		140
		141	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		142	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		143	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		144	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		145	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	146	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
78		147
79	# 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
80	# within the Safe compartment.	149	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	150	for my $pkg (qw(
		151	cf::global cf::attachable
		152	cf::object cf::object::player
		153	cf::client cf::player
		154	cf::arch cf::living
		155	cf::map cf::party cf::region
		156	)) {
82	no strict 'refs';	157	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	158	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	159	}
85		160
86	$Event::DIED = sub {	161	$Event::DIED = sub {
87	warn "error in event callback: @_";	162	warn "error in event callback: @_";
88	};	163	};
89		164
90	my %ext_pkg;
91	my @exts;
92	my @hook;
93	my %command;
94	my %extcmd;
95
96	=head2 UTILITY FUNCTIONS	165	=head2 UTILITY FUNCTIONS
97		166
98	=over 4	167	=over 4
99		168
		169	=item dumpval $ref
		170
100	=cut	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	}
101		191
102	use JSON::Syck (); # TODO# replace by JSON::PC once working	192	use JSON::Syck (); # TODO# replace by JSON::PC once working
103		193
104	=item $ref = cf::from_json $json	194	=item $ref = cf::from_json $json
105		195
…		…
121	sub to_json($) {	211	sub to_json($) {
122	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	212	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
123	JSON::Syck::Dump $_[0]	213	JSON::Syck::Dump $_[0]
124	}	214	}
125		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
126	=back	363	=back
127		364
128	=cut	365	=cut
129		366
130	#############################################################################	367	#############################################################################
131		368
132	=head2 EVENTS AND OBJECT ATTACHMENTS	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	$path
		478	}
		479
		480	# the original (read-only) location
		481	sub load_path {
		482	my ($self) = @_;
		483
		484	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		485	}
		486
		487	# the temporary/swap location
		488	sub save_path {
		489	my ($self) = @_;
		490
		491	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		492	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		493	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		494	}
		495
		496	# the unique path, undef == no special unique path
		497	sub uniq_path {
		498	my ($self) = @_;
		499
		500	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		501	}
		502
		503	# this is somewhat ugly, but style maps do need special treatment
		504	sub is_style_map {
		505	$_[0]{path} =~ m{^/styles/}
		506	}
		507
		508	sub load_orig {
		509	my ($self) = @_;
		510
		511	&cf::map::load_map_header ($self->load_path)
		512	}
		513
		514	sub load_temp {
		515	my ($self) = @_;
		516
		517	&cf::map::load_map_header ($self->save_path)
		518	}
		519
		520	package cf;
		521
		522	#############################################################################
		523
		524	=head2 ATTACHABLE OBJECTS
		525
		526	Many objects in crossfire are so-called attachable objects. That means you can
		527	attach callbacks/event handlers (a collection of which is called an "attachment")
		528	to it. All such attachable objects support the following methods.
		529
		530	In the following description, CLASS can be any of C<global>, C<object>
		531	C<player>, C<client> or C<map> (i.e. the attachable objects in
		532	crossfire+).
133		533
134	=over 4	534	=over 4
135		535
136	=item $object->attach ($attachment, key => $value...)
137
138	=item $object->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to an object.
141
142	=item $player->attach ($attachment, key => $value...)
143
144	=item $player->detach ($attachment)
145
146	Attach/detach a pre-registered attachment to a player.
147
148	=item $map->attach ($attachment, key => $value...)	536	=item $attachable->attach ($attachment, key => $value...)
149		537
150	=item $map->detach ($attachment)	538	=item $attachable->detach ($attachment)
151		539
152	Attach/detach a pre-registered attachment to a map.	540	Attach/detach a pre-registered attachment to a specific object and give it
		541	the specified key/value pairs as arguments.
153		542
154	=item $bool = $object->attached ($name)	543	Example, attach a minesweeper attachment to the given object, making it a
		544	10x10 minesweeper game:
155		545
156	=item $bool = $player->attached ($name)	546	$obj->attach (minesweeper => width => 10, height => 10);
157		547
158	=item $bool = $map->attached ($name)	548	=item $bool = $attachable->attached ($name)
159		549
160	Checks wether the named attachment is currently attached to the object.	550	Checks wether the named attachment is currently attached to the object.
161		551
162	=item cf::attach_global ...	552	=item cf::CLASS->attach ...
163		553
164	Attach handlers for global events.	554	=item cf::CLASS->detach ...
165		555
166	This and all following C<attach_*>-functions expect any number of the	556	Define an anonymous attachment and attach it to all objects of the given
167	following handler/hook descriptions:	557	CLASS. See the next function for an explanation of its arguments.
		558
		559	You can attach to global events by using the C<cf::global> class.
		560
		561	Example, log all player logins:
		562
		563	cf::player->attach (
		564	on_login => sub {
		565	my ($pl) = @_;
		566	...
		567	},
		568	);
		569
		570	Example, attach to the jeweler skill:
		571
		572	cf::object->attach (
		573	type => cf::SKILL,
		574	subtype => cf::SK_JEWELER,
		575	on_use_skill => sub {
		576	my ($sk, $ob, $part, $dir, $msg) = @_;
		577	...
		578	},
		579	);
		580
		581	=item cf::CLASS::attachment $name, ...
		582
		583	Register an attachment by C<$name> through which attachable objects of the
		584	given CLASS can refer to this attachment.
		585
		586	Some classes such as crossfire maps and objects can specify attachments
		587	that are attached at load/instantiate time, thus the need for a name.
		588
		589	These calls expect any number of the following handler/hook descriptions:
168		590
169	=over 4	591	=over 4
170		592
171	=item prio => $number	593	=item prio => $number
172		594
…		…
174	by another C<prio> setting). Lower priority handlers get executed	596	by another C<prio> setting). Lower priority handlers get executed
175	earlier. The default priority is C<0>, and many built-in handlers are	597	earlier. The default priority is C<0>, and many built-in handlers are
176	registered at priority C<-1000>, so lower priorities should not be used	598	registered at priority C<-1000>, so lower priorities should not be used
177	unless you know what you are doing.	599	unless you know what you are doing.
178		600
		601	=item type => $type
		602
		603	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		604	given type of objects only (the additional parameter C<subtype> can be
		605	used to further limit to the given subtype).
		606
179	=item on_I<event> => \&cb	607	=item on_I<event> => \&cb
180		608
181	Call the given code reference whenever the named event happens (event is	609	Call the given code reference whenever the named event happens (event is
182	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	610	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
183	handlers are recognised generally depends on the type of object these	611	handlers are recognised generally depends on the type of object these
…		…
192	package and register them. Only handlers for eevents supported by the	620	package and register them. Only handlers for eevents supported by the
193	object/class are recognised.	621	object/class are recognised.
194		622
195	=back	623	=back
196		624
197	=item cf::attach_to_type $object_type, $subtype, ...	625	Example, define an attachment called "sockpuppet" that calls the given
		626	event handler when a monster attacks:
198		627
199	Attach handlers for a specific object type (e.g. TRANSPORT) and	628	cf::object::attachment sockpuppet =>
200	subtype. If C<$subtype> is zero or undef, matches all objects of the given	629	on_skill_attack => sub {
201	type.	630	my ($self, $victim) = @_;
202		631	...
203	=item cf::attach_to_objects ...
204
205	Attach handlers to all objects. Do not use this except for debugging or
206	very rare events, as handlers are (obviously) called for I<all> objects in
207	the game.
208
209	=item cf::attach_to_players ...
210
211	Attach handlers to all players.
212
213	=item cf::attach_to_maps ...
214
215	Attach handlers to all maps.
216
217	=item cf:register_attachment $name, ...
218
219	Register an attachment by name through which objects can refer to this
220	attachment.
221
222	=item cf:register_player_attachment $name, ...
223
224	Register an attachment by name through which players can refer to this
225	attachment.
226
227	=item cf:register_map_attachment $name, ...
228
229	Register an attachment by name through which maps can refer to this
230	attachment.
231
232	=cut
233
234	# the following variables are defined in .xs and must not be re-created
235	our @CB_GLOBAL = (); # registry for all global events
236	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
237	our @CB_PLAYER = ();
238	our @CB_TYPE = (); # registry for type (cf-object class) based events
239	our @CB_MAP = ();
240
241	my %attachment;
242
243	sub _attach_cb($\%$$$) {
244	my ($registry, $undo, $event, $prio, $cb) = @_;
245
246	use sort 'stable';
247
248	$cb = [$prio, $cb];
249
250	@{$registry->[$event]} = sort
251	{ $a->[0] cmp $b->[0] }
252	@{$registry->[$event] || []}, $cb;
253
254	push @{$undo->{cb}}, [$event, $cb];
255	}
256
257	# attach handles attaching event callbacks
258	# the only thing the caller has to do is pass the correct
259	# registry (== where the callback attaches to).
260	sub _attach(\@$@) {
261	my ($registry, $klass, @arg) = @_;
262
263	my $prio = 0;
264
265	my %undo = (
266	registry => $registry,
267	cb => [],
268	);
269
270	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
271
272	while (@arg) {
273	my $type = shift @arg;
274
275	if ($type eq "prio") {
276	$prio = shift @arg;
277
278	} elsif ($type eq "package") {
279	my $pkg = shift @arg;
280
281	while (my ($name, $id) = each %cb_id) {
282	if (my $cb = $pkg->can ($name)) {
283	_attach_cb $registry, %undo, $id, $prio, $cb;
284	}
285	}	632	}
286
287	} elsif (exists $cb_id{$type}) {
288	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
289
290	} elsif (ref $type) {
291	warn "attaching objects not supported, ignoring.\n";
292
293	} else {
294	shift @arg;
295	warn "attach argument '$type' not supported, ignoring.\n";
296	}
297	}
298
299	\%undo
300	}
301
302	sub _attach_attachment {
303	my ($obj, $name, %arg) = @_;
304
305	return if exists $obj->{_attachment}{$name};
306
307	my $res;
308
309	if (my $attach = $attachment{$name}) {
310	my $registry = $obj->registry;
311
312	for (@$attach) {
313	my ($klass, @attach) = @$_;
314	$res = _attach @$registry, $klass, @attach;
315	}
316
317	$obj->{$name} = \%arg;
318	} else {
319	warn "object uses attachment '$name' that is not available, postponing.\n";
320	}
321
322	$obj->{_attachment}{$name} = undef;
323
324	$res->{attachment} = $name;
325	$res
326	}
327
328	*cf::object::attach =
329	*cf::player::attach =
330	*cf::map::attach = sub {
331	my ($obj, $name, %arg) = @_;
332
333	_attach_attachment $obj, $name, %arg;
334	};
335
336	# all those should be optimised
337	*cf::object::detach =
338	*cf::player::detach =
339	*cf::map::detach = sub {
340	my ($obj, $name) = @_;
341
342	delete $obj->{_attachment}{$name};
343	reattach ($obj);
344	};
345
346	*cf::object::attached =
347	*cf::player::attached =
348	*cf::map::attached = sub {
349	my ($obj, $name) = @_;
350
351	exists $obj->{_attachment}{$name}
352	};
353
354	sub attach_global {
355	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
356	}
357
358	sub attach_to_type {
359	my $type = shift;
360	my $subtype = shift;
361
362	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
363	}
364
365	sub attach_to_objects {
366	_attach @CB_OBJECT, KLASS_OBJECT, @_
367	}
368
369	sub attach_to_players {
370	_attach @CB_PLAYER, KLASS_PLAYER, @_
371	}
372
373	sub attach_to_maps {
374	_attach @CB_MAP, KLASS_MAP, @_
375	}
376
377	sub register_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_OBJECT, @_]];
381	}
382
383	sub register_player_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_PLAYER, @_]];
387	}
388
389	sub register_map_attachment {
390	my $name = shift;
391
392	$attachment{$name} = [[KLASS_MAP, @_]];
393	}
394
395	our $override;
396	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
397
398	sub override {
399	$override = 1;
400	@invoke_results = ();
401	}
402
403	sub do_invoke {
404	my $event = shift;
405	my $callbacks = shift;
406
407	@invoke_results = ();
408
409	local $override;
410
411	for (@$callbacks) {
412	eval { &{$_->[1]} };
413
414	if ($@) {
415	warn "$@";
416	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
417	override;
418	}
419
420	return 1 if $override;
421	}
422
423	0	633	}
424	}
425		634
426	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	635	=item $attachable->valid
427
428	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
429
430	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
431
432	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
433
434	Generate a global/object/player/map-specific event with the given arguments.
435
436	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
437	removed in future versions), and there is no public API to access override
438	results (if you must, access C<@cf::invoke_results> directly).
439
440	=back
441
442	=cut
443
444	#############################################################################
445
446	=head2 METHODS VALID FOR ALL CORE OBJECTS
447
448	=over 4
449
450	=item $object->valid, $player->valid, $map->valid
451		636
452	Just because you have a perl object does not mean that the corresponding	637	Just because you have a perl object does not mean that the corresponding
453	C-level object still exists. If you try to access an object that has no	638	C-level object still exists. If you try to access an object that has no
454	valid C counterpart anymore you get an exception at runtime. This method	639	valid C counterpart anymore you get an exception at runtime. This method
455	can be used to test for existence of the C object part without causing an	640	can be used to test for existence of the C object part without causing an
456	exception.	641	exception.
457		642
		643	=cut
		644
		645	# the following variables are defined in .xs and must not be re-created
		646	our @CB_GLOBAL = (); # registry for all global events
		647	our @CB_ATTACHABLE = (); # registry for all attachables
		648	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		649	our @CB_PLAYER = ();
		650	our @CB_CLIENT = ();
		651	our @CB_TYPE = (); # registry for type (cf-object class) based events
		652	our @CB_MAP = ();
		653
		654	my %attachment;
		655
		656	sub _attach_cb($$$$) {
		657	my ($registry, $event, $prio, $cb) = @_;
		658
		659	use sort 'stable';
		660
		661	$cb = [$prio, $cb];
		662
		663	@{$registry->[$event]} = sort
		664	{ $a->[0] cmp $b->[0] }
		665	@{$registry->[$event] || []}, $cb;
		666	}
		667
		668	# hack
		669	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		670
		671	# attach handles attaching event callbacks
		672	# the only thing the caller has to do is pass the correct
		673	# registry (== where the callback attaches to).
		674	sub _attach {
		675	my ($registry, $klass, @arg) = @_;
		676
		677	my $object_type;
		678	my $prio = 0;
		679	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		680
		681	#TODO: get rid of this hack
		682	if ($attachable_klass{$klass}) {
		683	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		684	}
		685
		686	while (@arg) {
		687	my $type = shift @arg;
		688
		689	if ($type eq "prio") {
		690	$prio = shift @arg;
		691
		692	} elsif ($type eq "type") {
		693	$object_type = shift @arg;
		694	$registry = $CB_TYPE[$object_type] ||= [];
		695
		696	} elsif ($type eq "subtype") {
		697	defined $object_type or Carp::croak "subtype specified without type";
		698	my $object_subtype = shift @arg;
		699	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		700
		701	} elsif ($type eq "package") {
		702	my $pkg = shift @arg;
		703
		704	while (my ($name, $id) = each %cb_id) {
		705	if (my $cb = $pkg->can ($name)) {
		706	_attach_cb $registry, $id, $prio, $cb;
		707	}
		708	}
		709
		710	} elsif (exists $cb_id{$type}) {
		711	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		712
		713	} elsif (ref $type) {
		714	warn "attaching objects not supported, ignoring.\n";
		715
		716	} else {
		717	shift @arg;
		718	warn "attach argument '$type' not supported, ignoring.\n";
		719	}
		720	}
		721	}
		722
		723	sub _object_attach {
		724	my ($obj, $name, %arg) = @_;
		725
		726	return if exists $obj->{_attachment}{$name};
		727
		728	if (my $attach = $attachment{$name}) {
		729	my $registry = $obj->registry;
		730
		731	for (@$attach) {
		732	my ($klass, @attach) = @$_;
		733	_attach $registry, $klass, @attach;
		734	}
		735
		736	$obj->{$name} = \%arg;
		737	} else {
		738	warn "object uses attachment '$name' that is not available, postponing.\n";
		739	}
		740
		741	$obj->{_attachment}{$name} = undef;
		742	}
		743
		744	sub cf::attachable::attach {
		745	if (ref $_[0]) {
		746	_object_attach @_;
		747	} else {
		748	_attach shift->_attach_registry, @_;
		749	}
		750	};
		751
		752	# all those should be optimised
		753	sub cf::attachable::detach {
		754	my ($obj, $name) = @_;
		755
		756	if (ref $obj) {
		757	delete $obj->{_attachment}{$name};
		758	reattach ($obj);
		759	} else {
		760	Carp::croak "cannot, currently, detach class attachments";
		761	}
		762	};
		763
		764	sub cf::attachable::attached {
		765	my ($obj, $name) = @_;
		766
		767	exists $obj->{_attachment}{$name}
		768	}
		769
		770	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		771	eval "#line " . __LINE__ . " 'cf.pm'
		772	sub cf::\L$klass\E::_attach_registry {
		773	(\\\@CB_$klass, KLASS_$klass)
		774	}
		775
		776	sub cf::\L$klass\E::attachment {
		777	my \$name = shift;
		778
		779	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		780	}
		781	";
		782	die if $@;
		783	}
		784
		785	our $override;
		786	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		787
		788	sub override {
		789	$override = 1;
		790	@invoke_results = ();
		791	}
		792
		793	sub do_invoke {
		794	my $event = shift;
		795	my $callbacks = shift;
		796
		797	@invoke_results = ();
		798
		799	local $override;
		800
		801	for (@$callbacks) {
		802	eval { &{$_->[1]} };
		803
		804	if ($@) {
		805	warn "$@";
		806	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		807	override;
		808	}
		809
		810	return 1 if $override;
		811	}
		812
		813	0
		814	}
		815
		816	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		817
		818	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		819
		820	Generate an object-specific event with the given arguments.
		821
		822	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		823	removed in future versions), and there is no public API to access override
		824	results (if you must, access C<@cf::invoke_results> directly).
		825
458	=back	826	=back
459		827
460	=cut	828	=cut
461
462	*cf::object::valid =
463	*cf::player::valid =
464	*cf::map::valid = \&cf::_valid;
465		829
466	#############################################################################	830	#############################################################################
467	# object support	831	# object support
468		832
469	sub instantiate {
470	my ($obj, $data) = @_;
471
472	$data = from_json $data;
473
474	for (@$data) {
475	my ($name, $args) = @$_;
476
477	$obj->attach ($name, %{$args || {} });
478	}
479	}
480
481	# basically do the same as instantiate, without calling instantiate
482	sub reattach {	833	sub reattach {
		834	# basically do the same as instantiate, without calling instantiate
483	my ($obj) = @_;	835	my ($obj) = @_;
		836
484	my $registry = $obj->registry;	837	my $registry = $obj->registry;
485		838
486	@$registry = ();	839	@$registry = ();
487		840
488	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	841	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
489		842
490	for my $name (keys %{ $obj->{_attachment} || {} }) {	843	for my $name (keys %{ $obj->{_attachment} || {} }) {
491	if (my $attach = $attachment{$name}) {	844	if (my $attach = $attachment{$name}) {
492	for (@$attach) {	845	for (@$attach) {
493	my ($klass, @attach) = @$_;	846	my ($klass, @attach) = @$_;
494	_attach @$registry, $klass, @attach;	847	_attach $registry, $klass, @attach;
495	}	848	}
496	} else {	849	} else {
497	warn "object uses attachment '$name' that is not available, postponing.\n";	850	warn "object uses attachment '$name' that is not available, postponing.\n";
498	}	851	}
499	}	852	}
500	}	853	}
501		854
502	sub object_freezer_save {	855	cf::attachable->attach (
503	my ($filename, $rdata, $objs) = @_;
504
505	if (length $$rdata) {
506	warn sprintf "saving %s (%d,%d)\n",
507	$filename, length $$rdata, scalar @$objs;
508
509	if (open my $fh, ">:raw", "$filename~") {
510	chmod SAVE_MODE, $fh;
511	syswrite $fh, $$rdata;
512	close $fh;
513
514	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
517	close $fh;
518	rename "$filename.pst~", "$filename.pst";
519	} else {
520	unlink "$filename.pst";
521	}
522
523	rename "$filename~", $filename;
524	} else {
525	warn "FATAL: $filename~: $!\n";
526	}
527	} else {
528	unlink $filename;
529	unlink "$filename.pst";
530	}
531	}
532
533	sub object_freezer_as_string {
534	my ($rdata, $objs) = @_;
535
536	use Data::Dumper;
537
538	$$rdata . Dumper $objs
539	}
540
541	sub object_thawer_load {
542	my ($filename) = @_;
543
544	local $/;
545
546	my $av;
547
548	#TODO: use sysread etc.
549	if (open my $data, "<:raw:perlio", $filename) {
550	$data = <$data>;
551	if (open my $pst, "<:raw:perlio", "$filename.pst") {
552	$av = eval { (Storable::thaw <$pst>)->{objs} };
553	}
554	return ($data, $av);
555	}
556
557	()
558	}
559
560	attach_to_objects
561	prio => -1000000,	856	prio => -1000000,
		857	on_instantiate => sub {
		858	my ($obj, $data) = @_;
		859
		860	$data = from_json $data;
		861
		862	for (@$data) {
		863	my ($name, $args) = @$_;
		864
		865	$obj->attach ($name, %{$args || {} });
		866	}
		867	},
		868	on_reattach => \&reattach,
562	on_clone => sub {	869	on_clone => sub {
563	my ($src, $dst) = @_;	870	my ($src, $dst) = @_;
564		871
565	@{$dst->registry} = @{$src->registry};	872	@{$dst->registry} = @{$src->registry};
566		873
567	%$dst = %$src;	874	%$dst = %$src;
568		875
569	%{$dst->{_attachment}} = %{$src->{_attachment}}	876	%{$dst->{_attachment}} = %{$src->{_attachment}}
570	if exists $src->{_attachment};	877	if exists $src->{_attachment};
571	},	878	},
572	;	879	);
		880
		881	sub object_freezer_save {
		882	my ($filename, $rdata, $objs) = @_;
		883
		884	sync_job {
		885	if (length $$rdata) {
		886	warn sprintf "saving %s (%d,%d)\n",
		887	$filename, length $$rdata, scalar @$objs;
		888
		889	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		890	chmod SAVE_MODE, $fh;
		891	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		892	aio_fsync $fh;
		893	close $fh;
		894
		895	if (@$objs) {
		896	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		897	chmod SAVE_MODE, $fh;
		898	my $data = Storable::nfreeze { version => 1, objs => $objs };
		899	aio_write $fh, 0, (length $data), $data, 0;
		900	aio_fsync $fh;
		901	close $fh;
		902	aio_rename "$filename.pst~", "$filename.pst";
		903	}
		904	} else {
		905	aio_unlink "$filename.pst";
		906	}
		907
		908	aio_rename "$filename~", $filename;
		909	} else {
		910	warn "FATAL: $filename~: $!\n";
		911	}
		912	} else {
		913	aio_unlink $filename;
		914	aio_unlink "$filename.pst";
		915	}
		916	}
		917	}
		918
		919	sub object_freezer_as_string {
		920	my ($rdata, $objs) = @_;
		921
		922	use Data::Dumper;
		923
		924	$$rdata . Dumper $objs
		925	}
		926
		927	sub object_thawer_load {
		928	my ($filename) = @_;
		929
		930	my ($data, $av);
		931
		932	(aio_load $filename, $data) >= 0
		933	or return;
		934
		935	unless (aio_stat "$filename.pst") {
		936	(aio_load "$filename.pst", $av) >= 0
		937	or return;
		938	$av = eval { (Storable::thaw $av)->{objs} };
		939	}
		940
		941	warn sprintf "loading %s (%d)\n",
		942	$filename, length $data, scalar @{$av || []};#d#
		943	return ($data, $av);
		944	}
573		945
574	#############################################################################	946	#############################################################################
575	# old plug-in events	947	# command handling &c
576		948
577	sub inject_event {	949	=item cf::register_command $name => \&callback($ob,$args);
578	my $extension = shift;
579	my $event_code = shift;
580		950
581	my $cb = $hook[$event_code]{$extension}	951	Register a callback for execution when the client sends the user command
582	or return;	952	$name.
583		953
584	&$cb	954	=cut
585	}
586
587	sub inject_global_event {
588	my $event = shift;
589
590	my $cb = $hook[$event]
591	or return;
592
593	List::Util::max map &$_, values %$cb
594	}
595
596	sub inject_command {
597	my ($name, $obj, $params) = @_;
598
599	for my $cmd (@{ $command{$name} }) {
600	$cmd->[1]->($obj, $params);
601	}
602
603	-1
604	}
605		955
606	sub register_command {	956	sub register_command {
607	my ($name, $time, $cb) = @_;	957	my ($name, $cb) = @_;
608		958
609	my $caller = caller;	959	my $caller = caller;
610	#warn "registering command '$name/$time' to '$caller'";	960	#warn "registering command '$name/$time' to '$caller'";
611		961
612	push @{ $command{$name} }, [$time, $cb, $caller];	962	push @{ $COMMAND{$name} }, [$caller, $cb];
613	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
614	}	963	}
		964
		965	=item cf::register_extcmd $name => \&callback($pl,$packet);
		966
		967	Register a callbackf ro execution when the client sends an extcmd packet.
		968
		969	If the callback returns something, it is sent back as if reply was being
		970	called.
		971
		972	=cut
615		973
616	sub register_extcmd {	974	sub register_extcmd {
617	my ($name, $cb) = @_;	975	my ($name, $cb) = @_;
618		976
619	my $caller = caller;	977	$EXTCMD{$name} = $cb;
620	#warn "registering extcmd '$name' to '$caller'";
621
622	$extcmd{$name} = [$cb, $caller];
623	}	978	}
624		979
625	sub register {	980	cf::player->attach (
626	my ($base, $pkg) = @_;	981	on_command => sub {
		982	my ($pl, $name, $params) = @_;
627		983
628	#TODO	984	my $cb = $COMMAND{$name}
629	}	985	or return;
		986
		987	for my $cmd (@$cb) {
		988	$cmd->[1]->($pl->ob, $params);
		989	}
		990
		991	cf::override;
		992	},
		993	on_extcmd => sub {
		994	my ($pl, $buf) = @_;
		995
		996	my $msg = eval { from_json $buf };
		997
		998	if (ref $msg) {
		999	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		1000	if (my %reply = $cb->($pl, $msg)) {
		1001	$pl->ext_reply ($msg->{msgid}, %reply);
		1002	}
		1003	}
		1004	} else {
		1005	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		1006	}
		1007
		1008	cf::override;
		1009	},
		1010	);
630		1011
631	sub load_extension {	1012	sub load_extension {
632	my ($path) = @_;	1013	my ($path) = @_;
633		1014
634	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	1015	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
635	my $base = $1;	1016	my $base = $1;
636	my $pkg = $1;	1017	my $pkg = $1;
637	$pkg =~ s/[^[:word:]]/_/g;	1018	$pkg =~ s/[^[:word:]]/_/g;
638	$pkg = "ext::$pkg";	1019	$pkg = "ext::$pkg";
639		1020
640	warn "loading '$path' into '$pkg'\n";	1021	warn "... loading '$path' into '$pkg'\n";
641		1022
642	open my $fh, "<:utf8", $path	1023	open my $fh, "<:utf8", $path
643	or die "$path: $!";	1024	or die "$path: $!";
644		1025
645	my $source =	1026	my $source =
…		…
650		1031
651	eval $source	1032	eval $source
652	or die $@ ? "$path: $@\n"	1033	or die $@ ? "$path: $@\n"
653	: "extension disabled.\n";	1034	: "extension disabled.\n";
654		1035
655	push @exts, $pkg;	1036	push @EXTS, $pkg;
656	$ext_pkg{$base} = $pkg;
657
658	# no strict 'refs';
659	# @{"$pkg\::ISA"} = ext::;
660
661	register $base, $pkg;
662	}
663
664	sub unload_extension {
665	my ($pkg) = @_;
666
667	warn "removing extension $pkg\n";
668
669	# remove hooks
670	#TODO
671	# for my $idx (0 .. $#PLUGIN_EVENT) {
672	# delete $hook[$idx]{$pkg};
673	# }
674
675	# remove commands
676	for my $name (keys %command) {
677	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
678
679	if (@cb) {
680	$command{$name} = \@cb;
681	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
682	} else {
683	delete $command{$name};
684	delete $COMMAND{"$name\000"};
685	}
686	}
687
688	# remove extcmds
689	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
690	delete $extcmd{$name};
691	}
692
693	if (my $cb = $pkg->can ("unload")) {
694	eval {
695	$cb->($pkg);
696	1
697	} or warn "$pkg unloaded, but with errors: $@";
698	}
699
700	Symbol::delete_package $pkg;
701	}	1037	}
702		1038
703	sub load_extensions {	1039	sub load_extensions {
704	my $LIBDIR = maps_directory "perl";
705
706	for my $ext (<$LIBDIR/*.ext>) {	1040	for my $ext (<$LIBDIR/*.ext>) {
707	next unless -r $ext;	1041	next unless -r $ext;
708	eval {	1042	eval {
709	load_extension $ext;	1043	load_extension $ext;
710	1	1044	1
711	} or warn "$ext not loaded: $@";	1045	} or warn "$ext not loaded: $@";
712	}	1046	}
713	}	1047	}
714		1048
715	#############################################################################	1049	#############################################################################
716	# extcmd framework, basically convert ext <msg>
717	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
718
719	attach_to_players
720	on_extcmd => sub {
721	my ($pl, $buf) = @_;
722
723	my $msg = eval { from_json $buf };
724
725	if (ref $msg) {
726	if (my $cb = $extcmd{$msg->{msgtype}}) {
727	if (my %reply = $cb->[0]->($pl, $msg)) {
728	$pl->ext_reply ($msg->{msgid}, %reply);
729	}
730	}
731	} else {
732	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
733	}
734
735	cf::override;
736	},
737	;
738
739	#############################################################################
740	# load/save/clean perl data associated with a map	1050	# load/save/clean perl data associated with a map
741		1051
742	*cf::mapsupport::on_clean = sub {	1052	*cf::mapsupport::on_clean = sub {
743	my ($map) = @_;	1053	my ($map) = @_;
744		1054
…		…
746	defined $path or return;	1056	defined $path or return;
747		1057
748	unlink "$path.pst";	1058	unlink "$path.pst";
749	};	1059	};
750		1060
751	attach_to_maps prio => -10000, package => cf::mapsupport::;	1061	cf::map->attach (prio => -10000, package => cf::mapsupport::);
752		1062
753	#############################################################################	1063	#############################################################################
754	# load/save perl data associated with player->ob objects
755
756	sub all_objects(@) {
757	@_, map all_objects ($_->inv), @_
758	}
759
760	# TODO: compatibility cruft, remove when no longer needed
761	attach_to_players
762	on_load => sub {
763	my ($pl, $path) = @_;
764
765	for my $o (all_objects $pl->ob) {
766	if (my $value = $o->get_ob_key_value ("_perl_data")) {
767	$o->set_ob_key_value ("_perl_data");
768
769	%$o = %{ Storable::thaw pack "H*", $value };
770	}
771	}
772	},
773	;
774
775	#############################################################################
776		1064
777	=head2 CORE EXTENSIONS	1065	=head2 CORE EXTENSIONS
778		1066
779	Functions and methods that extend core crossfire objects.	1067	Functions and methods that extend core crossfire objects.
780		1068
		1069	=cut
		1070
		1071	package cf::player;
		1072
		1073	use Coro::AIO;
		1074
		1075	=head3 cf::player
		1076
781	=over 4	1077	=over 4
782		1078
783	=item cf::player::exists $login	1079	=item cf::player::find $login
784		1080
785	Returns true when the given account exists.	1081	Returns the given player object, loading it if necessary (might block).
786		1082
787	=cut	1083	=cut
788		1084
789	sub cf::player::exists($) {	1085	sub playerdir($) {
790	cf::player::find $_[0]	1086	cf::localdir
791	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1087	. "/"
		1088	. cf::playerdir
		1089	. "/"
		1090	. (ref $_[0] ? $_[0]->ob->name : $_[0])
792	}	1091	}
		1092
		1093	sub path($) {
		1094	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1095
		1096	(playerdir $login) . "/$login.pl"
		1097	}
		1098
		1099	sub find_active($) {
		1100	$cf::PLAYER{$_[0]}
		1101	and $cf::PLAYER{$_[0]}->active
		1102	and $cf::PLAYER{$_[0]}
		1103	}
		1104
		1105	sub exists($) {
		1106	my ($login) = @_;
		1107
		1108	$cf::PLAYER{$login}
		1109	or cf::sync_job { !aio_stat $login }
		1110	}
		1111
		1112	sub find($) {
		1113	return $cf::PLAYER{$_[0]} || do {
		1114	my $login = $_[0];
		1115
		1116	my $guard = cf::lock_acquire "user_find:$login";
		1117
		1118	$cf::PLAYER{$_[0]} || do {
		1119	my $pl = load_pl path $login
		1120	or return;
		1121	$cf::PLAYER{$login} = $pl
		1122	}
		1123	}
		1124	}
		1125
		1126	sub save($) {
		1127	my ($pl) = @_;
		1128
		1129	return if $pl->{deny_save};
		1130
		1131	my $path = path $pl;
		1132	my $guard = cf::lock_acquire "user_save:$path";
		1133
		1134	return if $pl->{deny_save};
		1135
		1136	aio_mkdir playerdir $pl, 0770;
		1137	$pl->{last_save} = $cf::RUNTIME;
		1138
		1139	$pl->save_pl ($path);
		1140	Coro::cede;
		1141	}
		1142
		1143	sub new($) {
		1144	my ($login) = @_;
		1145
		1146	my $self = create;
		1147
		1148	$self->ob->name ($login);
		1149	$self->{deny_save} = 1;
		1150
		1151	$cf::PLAYER{$login} = $self;
		1152
		1153	$self
		1154	}
		1155
		1156	=item $pl->quit_character
		1157
		1158	Nukes the player without looking back. If logged in, the connection will
		1159	be destroyed. May block for a long time.
		1160
		1161	=cut
		1162
		1163	sub quit_character {
		1164	my ($pl) = @_;
		1165
		1166	$pl->{deny_save} = 1;
		1167	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1168
		1169	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1170	$pl->deactivate;
		1171	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1172	$pl->ns->destroy if $pl->ns;
		1173
		1174	my $path = playerdir $pl;
		1175	my $temp = "$path~$cf::RUNTIME~deleting~";
		1176	aio_rename $path, $temp;
		1177	delete $cf::PLAYER{$pl->ob->name};
		1178	$pl->destroy;
		1179	IO::AIO::aio_rmtree $temp;
		1180	}
		1181
		1182	=item cf::player::list_logins
		1183
		1184	Returns am arrayref of all valid playernames in the system, can take a
		1185	while and may block, so not sync_job-capable, ever.
		1186
		1187	=cut
		1188
		1189	sub list_logins {
		1190	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1191	or return [];
		1192
		1193	my @logins;
		1194
		1195	for my $login (@$dirs) {
		1196	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1197	aio_read $fh, 0, 512, my $buf, 0 or next;
		1198	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1199
		1200	utf8::decode $login;
		1201	push @logins, $login;
		1202	}
		1203
		1204	\@logins
		1205	}
		1206
		1207	=item $player->maps
		1208
		1209	Returns an arrayref of cf::path's of all maps that are private for this
		1210	player. May block.
		1211
		1212	=cut
		1213
		1214	sub maps($) {
		1215	my ($pl) = @_;
		1216
		1217	my $files = aio_readdir playerdir $pl
		1218	or return;
		1219
		1220	my @paths;
		1221
		1222	for (@$files) {
		1223	utf8::decode $_;
		1224	next if /\.(?:pl|pst)$/;
		1225	next unless /^$PATH_SEP/o;
		1226
		1227	push @paths, new cf::path "~" . $pl->ob->name . "/" . $_;
		1228	}
		1229
		1230	\@paths
		1231	}
		1232
		1233	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1234
		1235	Sends an ext reply to the player.
		1236
		1237	=cut
		1238
		1239	sub ext_reply($$$%) {
		1240	my ($self, $id, %msg) = @_;
		1241
		1242	$msg{msgid} = $id;
		1243
		1244	$self->send ("ext " . cf::to_json \%msg);
		1245	}
		1246
		1247	package cf;
		1248
		1249	=back
		1250
		1251
		1252	=head3 cf::map
		1253
		1254	=over 4
		1255
		1256	=cut
		1257
		1258	package cf::map;
		1259
		1260	use Fcntl;
		1261	use Coro::AIO;
		1262
		1263	our $MAX_RESET = 3600;
		1264	our $DEFAULT_RESET = 3000;
		1265
		1266	sub generate_random_map {
		1267	my ($path, $rmp) = @_;
		1268
		1269	# mit "rum" bekleckern, nicht
		1270	cf::map::_create_random_map
		1271	$path,
		1272	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1273	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1274	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1275	$rmp->{exit_on_final_map},
		1276	$rmp->{xsize}, $rmp->{ysize},
		1277	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1278	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1279	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1280	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1281	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1282	(cf::region::find $rmp->{region})
		1283	}
		1284
		1285	# and all this just because we cannot iterate over
		1286	# all maps in C++...
		1287	sub change_all_map_light {
		1288	my ($change) = @_;
		1289
		1290	$_->change_map_light ($change)
		1291	for grep $_->outdoor, values %cf::MAP;
		1292	}
		1293
		1294	sub load_map_header($) {
		1295	my ($path) = @_;
		1296
		1297	utf8::encode $path;
		1298	aio_open $path, O_RDONLY, 0
		1299	or return;
		1300
		1301	my $map = cf::map::new
		1302	or return;
		1303
		1304	# for better error messages only, will be overwritten later
		1305	$map->path ($path);
		1306
		1307	$map->load_header ($path)
		1308	or return;
		1309
		1310	$map->{load_path} = $path;
		1311
		1312	$map
		1313	}
		1314
		1315	sub find;
		1316	sub find {
		1317	my ($path, $origin) = @_;
		1318
		1319	#warn "find<$path,$origin>\n";#d#
		1320
		1321	$path = new cf::path $path, $origin && $origin->path;
		1322	my $key = $path->as_string;
		1323
		1324	cf::lock_wait "map_find:$key";
		1325
		1326	$cf::MAP{$key} || do {
		1327	my $guard = cf::lock_acquire "map_find:$key";
		1328
		1329	# do it the slow way
		1330	my $map = $path->load_temp;
		1331
		1332	Coro::cede;
		1333
		1334	if ($map) {
		1335	$map->last_access ((delete $map->{last_access})
		1336	|| $cf::RUNTIME); #d#
		1337	# safety
		1338	$map->{instantiate_time} = $cf::RUNTIME
		1339	if $map->{instantiate_time} > $cf::RUNTIME;
		1340	} else {
		1341	$map = $path->load_orig
		1342	or return;
		1343
		1344	$map->{load_original} = 1;
		1345	$map->{instantiate_time} = $cf::RUNTIME;
		1346	$map->last_access ($cf::RUNTIME);
		1347	$map->instantiate;
		1348
		1349	# per-player maps become, after loading, normal maps
		1350	$map->per_player (0) if $path->{user_rel};
		1351	}
		1352
		1353	$map->path ($key);
		1354	$map->{path} = $path;
		1355	$map->{last_save} = $cf::RUNTIME;
		1356
		1357	Coro::cede;
		1358
		1359	if ($map->should_reset) {
		1360	$map->reset;
		1361	undef $guard;
		1362	$map = find $path
		1363	or return;
		1364	}
		1365
		1366	$cf::MAP{$key} = $map
		1367	}
		1368	}
		1369
		1370	sub load {
		1371	my ($self) = @_;
		1372
		1373	my $path = $self->{path};
		1374	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1375
		1376	return if $self->in_memory != cf::MAP_SWAPPED;
		1377
		1378	$self->in_memory (cf::MAP_LOADING);
		1379
		1380	$self->alloc;
		1381	$self->load_objects ($self->{load_path}, 1)
		1382	or return;
		1383
		1384	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1385	if delete $self->{load_original};
		1386
		1387	if (my $uniq = $path->uniq_path) {
		1388	utf8::encode $uniq;
		1389	if (aio_open $uniq, O_RDONLY, 0) {
		1390	$self->clear_unique_items;
		1391	$self->load_objects ($uniq, 0);
		1392	}
		1393	}
		1394
		1395	Coro::cede;
		1396
		1397	# now do the right thing for maps
		1398	$self->link_multipart_objects;
		1399
		1400	if ($self->{path}->is_style_map) {
		1401	$self->{deny_save} = 1;
		1402	$self->{deny_reset} = 1;
		1403	} else {
		1404	$self->fix_auto_apply;
		1405	$self->decay_objects;
		1406	$self->update_buttons;
		1407	$self->set_darkness_map;
		1408	$self->difficulty ($self->estimate_difficulty)
		1409	unless $self->difficulty;
		1410	$self->activate;
		1411	}
		1412
		1413	Coro::cede;
		1414
		1415	$self->in_memory (cf::MAP_IN_MEMORY);
		1416	}
		1417
		1418	# find and load all maps in the 3x3 area around a map
		1419	sub load_diag {
		1420	my ($map) = @_;
		1421
		1422	my @diag; # diagonal neighbours
		1423
		1424	for (0 .. 3) {
		1425	my $neigh = $map->tile_path ($_)
		1426	or next;
		1427	$neigh = find $neigh, $map
		1428	or next;
		1429	$neigh->load;
		1430
		1431	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1432	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1433	}
		1434
		1435	for (@diag) {
		1436	my $neigh = find @$_
		1437	or next;
		1438	$neigh->load;
		1439	}
		1440	}
		1441
		1442	sub find_sync {
		1443	my ($path, $origin) = @_;
		1444
		1445	cf::sync_job { find $path, $origin }
		1446	}
		1447
		1448	sub do_load_sync {
		1449	my ($map) = @_;
		1450
		1451	cf::sync_job { $map->load };
		1452	}
		1453
		1454	our %MAP_PREFETCH;
		1455	our $MAP_PREFETCHER = Coro::async {
		1456	while () {
		1457	while (%MAP_PREFETCH) {
		1458	my $key = each %MAP_PREFETCH
		1459	or next;
		1460	my $path = delete $MAP_PREFETCH{$key};
		1461
		1462	my $map = find $path
		1463	or next;
		1464	$map->load;
		1465	}
		1466	Coro::schedule;
		1467	}
		1468	};
		1469
		1470	sub find_async {
		1471	my ($path, $origin) = @_;
		1472
		1473	$path = new cf::path $path, $origin && $origin->path;
		1474	my $key = $path->as_string;
		1475
		1476	if (my $map = $cf::MAP{$key}) {
		1477	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1478	}
		1479
		1480	$MAP_PREFETCH{$key} = $path;
		1481	$MAP_PREFETCHER->ready;
		1482
		1483	()
		1484	}
		1485
		1486	sub save {
		1487	my ($self) = @_;
		1488
		1489	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1490
		1491	$self->{last_save} = $cf::RUNTIME;
		1492
		1493	return unless $self->dirty;
		1494
		1495	my $save = $self->{path}->save_path; utf8::encode $save;
		1496	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1497
		1498	$self->{load_path} = $save;
		1499
		1500	return if $self->{deny_save};
		1501
		1502	local $self->{last_access} = $self->last_access;#d#
		1503
		1504	cf::async {
		1505	$_->contr->save for $self->players;
		1506	};
		1507
		1508	if ($uniq) {
		1509	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1510	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1511	} else {
		1512	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1513	}
		1514	}
		1515
		1516	sub swap_out {
		1517	my ($self) = @_;
		1518
		1519	# save first because save cedes
		1520	$self->save;
		1521
		1522	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1523
		1524	return if $self->players;
		1525	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1526	return if $self->{deny_save};
		1527
		1528	$self->clear;
		1529	$self->in_memory (cf::MAP_SWAPPED);
		1530	}
		1531
		1532	sub reset_at {
		1533	my ($self) = @_;
		1534
		1535	# TODO: safety, remove and allow resettable per-player maps
		1536	return 1e99 if $self->{path}{user_rel};
		1537	return 1e99 if $self->{deny_reset};
		1538
		1539	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1540	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1541
		1542	$time + $to
		1543	}
		1544
		1545	sub should_reset {
		1546	my ($self) = @_;
		1547
		1548	$self->reset_at <= $cf::RUNTIME
		1549	}
		1550
		1551	sub unlink_save {
		1552	my ($self) = @_;
		1553
		1554	utf8::encode (my $save = $self->{path}->save_path);
		1555	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1556	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1557	}
		1558
		1559	sub rename {
		1560	my ($self, $new_path) = @_;
		1561
		1562	$self->unlink_save;
		1563
		1564	delete $cf::MAP{$self->path};
		1565	$self->{path} = new cf::path $new_path;
		1566	$self->path ($self->{path}->as_string);
		1567	$cf::MAP{$self->path} = $self;
		1568
		1569	$self->save;
		1570	}
		1571
		1572	sub reset {
		1573	my ($self) = @_;
		1574
		1575	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1576
		1577	return if $self->players;
		1578	return if $self->{path}{user_rel};#d#
		1579
		1580	warn "resetting map ", $self->path;#d#
		1581
		1582	delete $cf::MAP{$self->path};
		1583
		1584	$_->clear_links_to ($self) for values %cf::MAP;
		1585
		1586	$self->unlink_save;
		1587	$self->destroy;
		1588	}
		1589
		1590	my $nuke_counter = "aaaa";
		1591
		1592	sub nuke {
		1593	my ($self) = @_;
		1594
		1595	$self->{deny_save} = 1;
		1596	$self->reset_timeout (1);
		1597	$self->rename ("{nuke}/" . ($nuke_counter++));
		1598	$self->reset; # polite request, might not happen
		1599	}
		1600
		1601	sub customise_for {
		1602	my ($map, $ob) = @_;
		1603
		1604	if ($map->per_player) {
		1605	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1606	}
		1607
		1608	$map
		1609	}
		1610
		1611	=item cf::map::unique_maps
		1612
		1613	Returns an arrayref of cf::path's of all shared maps that have
		1614	instantiated unique items. May block.
		1615
		1616	=cut
		1617
		1618	sub unique_maps() {
		1619	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1620	or return;
		1621
		1622	my @paths;
		1623
		1624	for (@$files) {
		1625	utf8::decode $_;
		1626	next if /\.pst$/;
		1627	next unless /^$PATH_SEP/o;
		1628
		1629	push @paths, new cf::path $_;
		1630	}
		1631
		1632	\@paths
		1633	}
		1634
		1635	package cf;
		1636
		1637	=back
		1638
		1639	=head3 cf::object
		1640
		1641	=cut
		1642
		1643	package cf::object;
		1644
		1645	=over 4
		1646
		1647	=item $ob->inv_recursive
		1648
		1649	Returns the inventory of the object _and_ their inventories, recursively.
		1650
		1651	=cut
		1652
		1653	sub inv_recursive_;
		1654	sub inv_recursive_ {
		1655	map { $_, inv_recursive_ $_->inv } @_
		1656	}
		1657
		1658	sub inv_recursive {
		1659	inv_recursive_ inv $_[0]
		1660	}
		1661
		1662	package cf;
		1663
		1664	=back
		1665
		1666	=head3 cf::object::player
		1667
		1668	=over 4
793		1669
794	=item $player_object->reply ($npc, $msg[, $flags])	1670	=item $player_object->reply ($npc, $msg[, $flags])
795		1671
796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1672	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
797	can be C<undef>. Does the right thing when the player is currently in a	1673	can be C<undef>. Does the right thing when the player is currently in a
…		…
799		1675
800	=cut	1676	=cut
801		1677
802	# rough implementation of a future "reply" method that works	1678	# rough implementation of a future "reply" method that works
803	# with dialog boxes.	1679	# with dialog boxes.
		1680	#TODO: the first argument must go, split into a $npc->reply_to ( method
804	sub cf::object::player::reply($$$;$) {	1681	sub cf::object::player::reply($$$;$) {
805	my ($self, $npc, $msg, $flags) = @_;	1682	my ($self, $npc, $msg, $flags) = @_;
806		1683
807	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1684	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
808		1685
…		…
812	$msg = $npc->name . " says: $msg" if $npc;	1689	$msg = $npc->name . " says: $msg" if $npc;
813	$self->message ($msg, $flags);	1690	$self->message ($msg, $flags);
814	}	1691	}
815	}	1692	}
816		1693
817	=item $player->ext_reply ($msgid, $msgtype, %msg)
818
819	Sends an ext reply to the player.
820
821	=cut
822
823	sub cf::player::ext_reply($$$%) {
824	my ($self, $id, %msg) = @_;
825
826	$msg{msgid} = $id;
827
828	$self->send ("ext " . to_json \%msg);
829	}
830
831	=item $player_object->may ("access")	1694	=item $player_object->may ("access")
832		1695
833	Returns wether the given player is authorized to access resource "access"	1696	Returns wether the given player is authorized to access resource "access"
834	(e.g. "command_wizcast").	1697	(e.g. "command_wizcast").
835		1698
…		…
842	(ref $cf::CFG{"may_$access"}	1705	(ref $cf::CFG{"may_$access"}
843	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1706	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
844	: $cf::CFG{"may_$access"})	1707	: $cf::CFG{"may_$access"})
845	}	1708	}
846		1709
847	=cut	1710	=item $player_object->enter_link
848		1711
849	#############################################################################	1712	Freezes the player and moves him/her to a special map (C<{link}>).
		1713
		1714	The player should be reaosnably safe there for short amounts of time. You
		1715	I<MUST> call C<leave_link> as soon as possible, though.
		1716
		1717	=item $player_object->leave_link ($map, $x, $y)
		1718
		1719	Moves the player out of the specila link map onto the given map. If the
		1720	map is not valid (or omitted), the player will be moved back to the
		1721	location he/she was before the call to C<enter_link>, or, if that fails,
		1722	to the emergency map position.
		1723
		1724	Might block.
		1725
		1726	=cut
		1727
		1728	sub cf::object::player::enter_link {
		1729	my ($self) = @_;
		1730
		1731	$self->deactivate_recursive;
		1732
		1733	return if $self->map == $LINK_MAP;
		1734
		1735	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1736	if $self->map;
		1737
		1738	$self->enter_map ($LINK_MAP, 20, 20);
		1739	}
		1740
		1741	sub cf::object::player::leave_link {
		1742	my ($self, $map, $x, $y) = @_;
		1743
		1744	my $link_pos = delete $self->{_link_pos};
		1745
		1746	unless ($map) {
		1747	# restore original map position
		1748	($map, $x, $y) = @{ $link_pos || [] };
		1749	$map = cf::map::find $map;
		1750
		1751	unless ($map) {
		1752	($map, $x, $y) = @$EMERGENCY_POSITION;
		1753	$map = cf::map::find $map
		1754	or die "FATAL: cannot load emergency map\n";
		1755	}
		1756	}
		1757
		1758	($x, $y) = (-1, -1)
		1759	unless (defined $x) && (defined $y);
		1760
		1761	# use -1 or undef as default coordinates, not 0, 0
		1762	($x, $y) = ($map->enter_x, $map->enter_y)
		1763	if $x <=0 && $y <= 0;
		1764
		1765	$map->load;
		1766	$map->load_diag;
		1767
		1768	return unless $self->contr->active;
		1769	$self->activate_recursive;
		1770	$self->enter_map ($map, $x, $y);
		1771	}
		1772
		1773	cf::player->attach (
		1774	on_logout => sub {
		1775	my ($pl) = @_;
		1776
		1777	# abort map switching before logout
		1778	if ($pl->ob->{_link_pos}) {
		1779	cf::sync_job {
		1780	$pl->ob->leave_link
		1781	};
		1782	}
		1783	},
		1784	on_login => sub {
		1785	my ($pl) = @_;
		1786
		1787	# try to abort aborted map switching on player login :)
		1788	# should happen only on crashes
		1789	if ($pl->ob->{_link_pos}) {
		1790	$pl->ob->enter_link;
		1791	(async {
		1792	# we need this sleep as the login has a concurrent enter_exit running
		1793	# and this sleep increases chances of the player not ending up in scorn
		1794	$pl->ob->reply (undef,
		1795	"There was an internal problem at your last logout, "
		1796	. "the server will try to bring you to your intended destination in a second.",
		1797	cf::NDI_RED);
		1798	Coro::Timer::sleep 1;
		1799	$pl->ob->leave_link;
		1800	})->prio (2);
		1801	}
		1802	},
		1803	);
		1804
		1805	=item $player_object->goto ($path, $x, $y)
		1806
		1807	=cut
		1808
		1809	sub cf::object::player::goto {
		1810	my ($self, $path, $x, $y) = @_;
		1811
		1812	$path = new cf::path $path;
		1813
		1814	$self->enter_link;
		1815
		1816	(async {
		1817	my $map = cf::map::find $path->as_string;
		1818	$map = $map->customise_for ($self) if $map;
		1819
		1820	# warn "entering ", $map->path, " at ($x, $y)\n"
		1821	# if $map;
		1822
		1823	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1824
		1825	$self->leave_link ($map, $x, $y);
		1826	})->prio (1);
		1827	}
		1828
		1829	=item $player_object->enter_exit ($exit_object)
		1830
		1831	=cut
		1832
		1833	sub parse_random_map_params {
		1834	my ($spec) = @_;
		1835
		1836	my $rmp = { # defaults
		1837	xsize => 10,
		1838	ysize => 10,
		1839	};
		1840
		1841	for (split /\n/, $spec) {
		1842	my ($k, $v) = split /\s+/, $_, 2;
		1843
		1844	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1845	}
		1846
		1847	$rmp
		1848	}
		1849
		1850	sub prepare_random_map {
		1851	my ($exit) = @_;
		1852
		1853	# all this does is basically replace the /! path by
		1854	# a new random map path (?random/...) with a seed
		1855	# that depends on the exit object
		1856
		1857	my $rmp = parse_random_map_params $exit->msg;
		1858
		1859	if ($exit->map) {
		1860	$rmp->{region} = $exit->map->region_name;
		1861	$rmp->{origin_map} = $exit->map->path;
		1862	$rmp->{origin_x} = $exit->x;
		1863	$rmp->{origin_y} = $exit->y;
		1864	}
		1865
		1866	$rmp->{random_seed} ||= $exit->random_seed;
		1867
		1868	my $data = cf::to_json $rmp;
		1869	my $md5 = Digest::MD5::md5_hex $data;
		1870
		1871	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1872	aio_write $fh, 0, (length $data), $data, 0;
		1873
		1874	$exit->slaying ("?random/$md5");
		1875	$exit->msg (undef);
		1876	}
		1877	}
		1878
		1879	sub cf::object::player::enter_exit {
		1880	my ($self, $exit) = @_;
		1881
		1882	return unless $self->type == cf::PLAYER;
		1883
		1884	$self->enter_link;
		1885
		1886	(async {
		1887	$self->deactivate_recursive; # just to be sure
		1888	unless (eval {
		1889	prepare_random_map $exit
		1890	if $exit->slaying eq "/!";
		1891
		1892	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1893	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1894
		1895	1;
		1896	}) {
		1897	$self->message ("Something went wrong deep within the crossfire server. "
		1898	. "I'll try to bring you back to the map you were before. "
		1899	. "Please report this to the dungeon master!",
		1900	cf::NDI_UNIQUE | cf::NDI_RED);
		1901
		1902	warn "ERROR in enter_exit: $@";
		1903	$self->leave_link;
		1904	}
		1905	})->prio (1);
		1906	}
		1907
		1908	=head3 cf::client
		1909
		1910	=over 4
		1911
		1912	=item $client->send_drawinfo ($text, $flags)
		1913
		1914	Sends a drawinfo packet to the client. Circumvents output buffering so
		1915	should not be used under normal circumstances.
		1916
		1917	=cut
		1918
		1919	sub cf::client::send_drawinfo {
		1920	my ($self, $text, $flags) = @_;
		1921
		1922	utf8::encode $text;
		1923	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1924	}
		1925
		1926
		1927	=item $success = $client->query ($flags, "text", \&cb)
		1928
		1929	Queues a query to the client, calling the given callback with
		1930	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1931	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1932
		1933	Queries can fail, so check the return code. Or don't, as queries will become
		1934	reliable at some point in the future.
		1935
		1936	=cut
		1937
		1938	sub cf::client::query {
		1939	my ($self, $flags, $text, $cb) = @_;
		1940
		1941	return unless $self->state == ST_PLAYING
		1942	|| $self->state == ST_SETUP
		1943	|| $self->state == ST_CUSTOM;
		1944
		1945	$self->state (ST_CUSTOM);
		1946
		1947	utf8::encode $text;
		1948	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1949
		1950	$self->send_packet ($self->{query_queue}[0][0])
		1951	if @{ $self->{query_queue} } == 1;
		1952	}
		1953
		1954	cf::client->attach (
		1955	on_reply => sub {
		1956	my ($ns, $msg) = @_;
		1957
		1958	# this weird shuffling is so that direct followup queries
		1959	# get handled first
		1960	my $queue = delete $ns->{query_queue}
		1961	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1962
		1963	(shift @$queue)->[1]->($msg);
		1964
		1965	push @{ $ns->{query_queue} }, @$queue;
		1966
		1967	if (@{ $ns->{query_queue} } == @$queue) {
		1968	if (@$queue) {
		1969	$ns->send_packet ($ns->{query_queue}[0][0]);
		1970	} else {
		1971	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1972	}
		1973	}
		1974	},
		1975	);
		1976
		1977	=item $client->async (\&cb)
		1978
		1979	Create a new coroutine, running the specified callback. The coroutine will
		1980	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1981	or loss of connection).
		1982
		1983	=cut
		1984
		1985	sub cf::client::async {
		1986	my ($self, $cb) = @_;
		1987
		1988	my $coro = &Coro::async ($cb);
		1989
		1990	$coro->on_destroy (sub {
		1991	delete $self->{_coro}{$coro+0};
		1992	});
		1993
		1994	$self->{_coro}{$coro+0} = $coro;
		1995
		1996	$coro
		1997	}
		1998
		1999	cf::client->attach (
		2000	on_destroy => sub {
		2001	my ($ns) = @_;
		2002
		2003	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2004	},
		2005	);
		2006
		2007	=back
		2008
850		2009
851	=head2 SAFE SCRIPTING	2010	=head2 SAFE SCRIPTING
852		2011
853	Functions that provide a safe environment to compile and execute	2012	Functions that provide a safe environment to compile and execute
854	snippets of perl code without them endangering the safety of the server	2013	snippets of perl code without them endangering the safety of the server
…		…
869		2028
870	=pod	2029	=pod
871		2030
872	The following fucntions and emthods are available within a safe environment:	2031	The following fucntions and emthods are available within a safe environment:
873		2032
874	cf::object contr pay_amount pay_player	2033	cf::object contr pay_amount pay_player map
875	cf::object::player player	2034	cf::object::player player
876	cf::player peaceful	2035	cf::player peaceful
		2036	cf::map trigger
877		2037
878	=cut	2038	=cut
879		2039
880	for (	2040	for (
881	["cf::object" => qw(contr pay_amount pay_player)],	2041	["cf::object" => qw(contr pay_amount pay_player map)],
882	["cf::object::player" => qw(player)],	2042	["cf::object::player" => qw(player)],
883	["cf::player" => qw(peaceful)],	2043	["cf::player" => qw(peaceful)],
		2044	["cf::map" => qw(trigger)],
884	) {	2045	) {
885	no strict 'refs';	2046	no strict 'refs';
886	my ($pkg, @funs) = @$_;	2047	my ($pkg, @funs) = @$_;
887	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2048	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
888	for @funs;	2049	for @funs;
…		…
1004		2165
1005	{	2166	{
1006	my $path = cf::localdir . "/database.pst";	2167	my $path = cf::localdir . "/database.pst";
1007		2168
1008	sub db_load() {	2169	sub db_load() {
1009	warn "loading database $path\n";#d# remove later
1010	$DB = stat $path ? Storable::retrieve $path : { };	2170	$DB = stat $path ? Storable::retrieve $path : { };
1011	}	2171	}
1012		2172
1013	my $pid;	2173	my $pid;
1014		2174
1015	sub db_save() {	2175	sub db_save() {
1016	warn "saving database $path\n";#d# remove later
1017	waitpid $pid, 0 if $pid;	2176	waitpid $pid, 0 if $pid;
1018	if (0 == ($pid = fork)) {	2177	if (0 == ($pid = fork)) {
1019	$DB->{_meta}{version} = 1;	2178	$DB->{_meta}{version} = 1;
1020	Storable::nstore $DB, "$path~";	2179	Storable::nstore $DB, "$path~";
1021	rename "$path~", $path;	2180	rename "$path~", $path;
…		…
1028	sub db_sync() {	2187	sub db_sync() {
1029	db_save if $dirty;	2188	db_save if $dirty;
1030	undef $dirty;	2189	undef $dirty;
1031	}	2190	}
1032		2191
1033	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2192	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1034	db_sync;	2193	db_sync;
1035	});	2194	});
1036		2195
1037	sub db_dirty() {	2196	sub db_dirty() {
1038	$dirty = 1;	2197	$dirty = 1;
…		…
1052	$DB->{$_[0]} = $_[1];	2211	$DB->{$_[0]} = $_[1];
1053	}	2212	}
1054	db_dirty;	2213	db_dirty;
1055	}	2214	}
1056		2215
1057	attach_global	2216	cf::global->attach (
1058	prio => 10000,	2217	prio => 10000,
1059	on_cleanup => sub {	2218	on_cleanup => sub {
1060	db_sync;	2219	db_sync;
1061	},	2220	},
1062	;	2221	);
1063	}	2222	}
1064		2223
1065	#############################################################################	2224	#############################################################################
1066	# the server's main()	2225	# the server's main()
1067		2226
…		…
1069	open my $fh, "<:utf8", cf::confdir . "/config"	2228	open my $fh, "<:utf8", cf::confdir . "/config"
1070	or return;	2229	or return;
1071		2230
1072	local $/;	2231	local $/;
1073	*CFG = YAML::Syck::Load <$fh>;	2232	*CFG = YAML::Syck::Load <$fh>;
		2233
		2234	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2235
		2236	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2237	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2238
		2239	if (exists $CFG{mlockall}) {
		2240	eval {
		2241	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2242	and die "WARNING: m(un)lockall failed: $!\n";
		2243	};
		2244	warn $@ if $@;
		2245	}
1074	}	2246	}
1075		2247
1076	sub main {	2248	sub main {
		2249	# we must not ever block the main coroutine
		2250	local $Coro::idle = sub {
		2251	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2252	async { Event::one_event };
		2253	};
		2254
1077	cfg_load;	2255	cfg_load;
1078	db_load;	2256	db_load;
1079	load_extensions;	2257	load_extensions;
1080	Event::loop;	2258	Event::loop;
1081	}	2259	}
1082		2260
1083	#############################################################################	2261	#############################################################################
1084	# initialisation	2262	# initialisation and cleanup
1085		2263
		2264	# install some emergency cleanup handlers
		2265	BEGIN {
		2266	for my $signal (qw(INT HUP TERM)) {
		2267	Event->signal (
		2268	data => WF_AUTOCANCEL,
		2269	signal => $signal,
		2270	cb => sub {
		2271	cf::cleanup "SIG$signal";
		2272	},
		2273	);
		2274	}
		2275	}
		2276
		2277	sub emergency_save() {
		2278	my $freeze_guard = cf::freeze_mainloop;
		2279
		2280	warn "enter emergency perl save\n";
		2281
		2282	cf::sync_job {
		2283	# use a peculiar iteration method to avoid tripping on perl
		2284	# refcount bugs in for. also avoids problems with players
		2285	# and maps saved/Destroyed asynchronously.
		2286	warn "begin emergency player save\n";
		2287	for my $login (keys %cf::PLAYER) {
		2288	my $pl = $cf::PLAYER{$login} or next;
		2289	$pl->valid or next;
		2290	$pl->save;
		2291	}
		2292	warn "end emergency player save\n";
		2293
		2294	warn "begin emergency map save\n";
		2295	for my $path (keys %cf::MAP) {
		2296	my $map = $cf::MAP{$path} or next;
		2297	$map->valid or next;
		2298	$map->save;
		2299	}
		2300	warn "end emergency map save\n";
		2301	};
		2302
		2303	warn "leave emergency perl save\n";
		2304	}
		2305
1086	sub _perl_reload(&) {	2306	sub reload() {
1087	my ($msg) = @_;	2307	# can/must only be called in main
		2308	if ($Coro::current != $Coro::main) {
		2309	warn "can only reload from main coroutine\n";
		2310	return;
		2311	}
1088		2312
1089	$msg->("reloading...");	2313	warn "reloading...";
		2314
		2315	warn "freezing server";
		2316	my $guard = freeze_mainloop;
		2317	cf::emergency_save;
		2318
		2319	warn "sync database to disk";
		2320	cf::db_sync;
		2321	IO::AIO::flush;
1090		2322
1091	eval {	2323	eval {
		2324	# if anything goes wrong in here, we should simply crash as we already saved
		2325
1092	# cancel all watchers	2326	warn "cancel all watchers";
1093	$_->cancel for Event::all_watchers;	2327	for (Event::all_watchers) {
		2328	$_->cancel if $_->data & WF_AUTOCANCEL;
		2329	}
1094		2330
		2331	warn "cancel all extension coros";
		2332	$_->cancel for values %EXT_CORO;
		2333	%EXT_CORO = ();
		2334
		2335	warn "remove commands";
		2336	%COMMAND = ();
		2337
		2338	warn "remove ext commands";
		2339	%EXTCMD = ();
		2340
1095	# unload all extensions	2341	warn "unload/nuke all extensions";
1096	for (@exts) {	2342	for my $pkg (@EXTS) {
1097	$msg->("unloading <$_>");	2343	warn "... unloading $pkg";
1098	unload_extension $_;	2344
		2345	if (my $cb = $pkg->can ("unload")) {
		2346	eval {
		2347	$cb->($pkg);
		2348	1
		2349	} or warn "$pkg unloaded, but with errors: $@";
1099	}	2350	}
1100		2351
		2352	warn "... nuking $pkg";
		2353	Symbol::delete_package $pkg;
		2354	}
		2355
1101	# unload all modules loaded from $LIBDIR	2356	warn "unload all perl modules loaded from $LIBDIR";
1102	while (my ($k, $v) = each %INC) {	2357	while (my ($k, $v) = each %INC) {
1103	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2358	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1104		2359
1105	$msg->("removing <$k>");	2360	warn "removing <$k>";
1106	delete $INC{$k};	2361	delete $INC{$k};
1107		2362
1108	$k =~ s/\.pm$//;	2363	$k =~ s/\.pm$//;
1109	$k =~ s/\//::/g;	2364	$k =~ s/\//::/g;
1110		2365
…		…
1113	}	2368	}
1114		2369
1115	Symbol::delete_package $k;	2370	Symbol::delete_package $k;
1116	}	2371	}
1117		2372
1118	# sync database to disk
1119	cf::db_sync;
1120
1121	# get rid of safe::, as good as possible	2373	warn "get rid of safe::, as good as possible";
1122	Symbol::delete_package "safe::$_"	2374	Symbol::delete_package "safe::$_"
1123	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2375	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1124		2376
1125	# remove register_script_function callbacks
1126	# TODO
1127
1128	# unload cf.pm "a bit"	2377	warn "unload cf.pm \"a bit\"";
1129	delete $INC{"cf.pm"};	2378	delete $INC{"cf.pm"};
1130		2379
1131	# don't, removes xs symbols, too,	2380	# don't, removes xs symbols, too,
1132	# and global variables created in xs	2381	# and global variables created in xs
1133	#Symbol::delete_package __PACKAGE__;	2382	#Symbol::delete_package __PACKAGE__;
1134		2383
1135	# reload cf.pm
1136	$msg->("reloading cf.pm");	2384	warn "reloading cf.pm";
1137	require cf;	2385	require cf;
		2386	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1138		2387
1139	# load config and database again	2388	warn "load config and database again";
1140	cf::cfg_load;	2389	cf::cfg_load;
1141	cf::db_load;	2390	cf::db_load;
1142		2391
1143	# load extensions	2392	warn "load extensions";
1144	$msg->("load extensions");
1145	cf::load_extensions;	2393	cf::load_extensions;
1146		2394
1147	# reattach attachments to objects	2395	warn "reattach attachments to objects/players";
1148	$msg->("reattach");
1149	_global_reattach;	2396	_global_reattach;
		2397	warn "reattach attachments to maps";
		2398	reattach $_ for values %MAP;
1150	};	2399	};
1151	$msg->($@) if $@;
1152		2400
1153	$msg->("reloaded");	2401	if ($@) {
		2402	warn $@;
		2403	warn "error while reloading, exiting.";
		2404	exit 1;
		2405	}
		2406
		2407	warn "reloaded";
1154	};	2408	};
1155		2409
1156	sub perl_reload() {	2410	#############################################################################
1157	_perl_reload {
1158	warn $_[0];
1159	print "$_[0]\n";
1160	};
1161	}
1162		2411
		2412	unless ($LINK_MAP) {
		2413	$LINK_MAP = cf::map::new;
		2414
		2415	$LINK_MAP->width (41);
		2416	$LINK_MAP->height (41);
		2417	$LINK_MAP->alloc;
		2418	$LINK_MAP->path ("{link}");
		2419	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2420	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2421
		2422	# dirty hack because... archetypes are not yet loaded
		2423	Event->timer (
		2424	after => 10,
		2425	cb => sub {
		2426	$_[0]->w->cancel;
		2427
		2428	# provide some exits "home"
		2429	my $exit = cf::object::new "exit";
		2430
		2431	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2432	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2433	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2434
		2435	$LINK_MAP->insert ($exit->clone, 19, 19);
		2436	$LINK_MAP->insert ($exit->clone, 19, 20);
		2437	$LINK_MAP->insert ($exit->clone, 19, 21);
		2438	$LINK_MAP->insert ($exit->clone, 20, 19);
		2439	$LINK_MAP->insert ($exit->clone, 20, 21);
		2440	$LINK_MAP->insert ($exit->clone, 21, 19);
		2441	$LINK_MAP->insert ($exit->clone, 21, 20);
		2442	$LINK_MAP->insert ($exit->clone, 21, 21);
		2443
		2444	$exit->destroy;
		2445	});
		2446
		2447	$LINK_MAP->{deny_save} = 1;
		2448	$LINK_MAP->{deny_reset} = 1;
		2449
		2450	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2451	}
		2452
1163	register_command "perl-reload", 0, sub {	2453	register_command "reload" => sub {
1164	my ($who, $arg) = @_;	2454	my ($who, $arg) = @_;
1165		2455
1166	if ($who->flag (FLAG_WIZ)) {	2456	if ($who->flag (FLAG_WIZ)) {
1167	_perl_reload {	2457	$who->message ("start of reload.");
1168	warn $_[0];	2458	reload;
1169	$who->message ($_[0]);	2459	$who->message ("end of reload.");
1170	};
1171	}	2460	}
1172	};	2461	};
1173		2462
1174	register "<global>", __PACKAGE__;
1175
1176	unshift @INC, $LIBDIR;	2463	unshift @INC, $LIBDIR;
1177		2464
1178	$TICK_WATCHER = Event->timer (	2465	$TICK_WATCHER = Event->timer (
		2466	reentrant => 0,
1179	prio => 1,	2467	prio => 0,
1180	async => 1,
1181	at => $NEXT_TICK || 1,	2468	at => $NEXT_TICK || $TICK,
		2469	data => WF_AUTOCANCEL,
1182	cb => sub {	2470	cb => sub {
1183	cf::server_tick; # one server iteration	2471	cf::server_tick; # one server iteration
1184		2472	$RUNTIME += $TICK;
1185	my $NOW = Event::time;
1186	$NEXT_TICK += $TICK;	2473	$NEXT_TICK += $TICK;
1187		2474
		2475	$WAIT_FOR_TICK->broadcast;
		2476	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2477
1188	# if we are delayed by four ticks or more, skip them all	2478	# if we are delayed by four ticks or more, skip them all
1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2479	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1190		2480
1191	$TICK_WATCHER->at ($NEXT_TICK);	2481	$TICK_WATCHER->at ($NEXT_TICK);
1192	$TICK_WATCHER->start;	2482	$TICK_WATCHER->start;
1193	},	2483	},
1194	);	2484	);
1195		2485
1196	IO::AIO::max_poll_time $TICK * 0.2;	2486	IO::AIO::max_poll_time $TICK * 0.2;
1197		2487
		2488	Event->io (
1198	Event->io (fd => IO::AIO::poll_fileno,	2489	fd => IO::AIO::poll_fileno,
1199	poll => 'r',	2490	poll => 'r',
1200	prio => 5,	2491	prio => 5,
		2492	data => WF_AUTOCANCEL,
1201	cb => \&IO::AIO::poll_cb);	2493	cb => \&IO::AIO::poll_cb,
		2494	);
		2495
		2496	Event->timer (
		2497	data => WF_AUTOCANCEL,
		2498	after => 0,
		2499	interval => 10,
		2500	cb => sub {
		2501	(Coro::unblock_sub {
		2502	write_runtime
		2503	or warn "ERROR: unable to write runtime file: $!";
		2504	})->();
		2505	},
		2506	);
		2507
		2508	END { cf::emergency_save }
1202		2509
1203	1	2510	1
1204		2511

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