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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.71 by root, Sun Oct 1 10:59:30 2006 UTC vs.
Revision 1.158 by root, Wed Jan 10 19:52:43 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	_init_vars;	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	our %EXTCMD = ();
		39
19	our @EVENT;	40	our @EVENT;
20	our $LIBDIR = maps_directory "perl";	41	our $LIBDIR = datadir . "/ext";
21		42
22	our $TICK = MAX_TIME * 1e-6;	43	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	44	our $TICK_WATCHER;
24	our $NEXT_TICK;	45	our $NEXT_TICK;
		46	our $NOW;
25		47
26	our %CFG;	48	our %CFG;
27		49
		50	our $UPTIME; $UPTIME ||= time;
		51	our $RUNTIME;
		52
		53	our %PLAYER; # all users
		54	our %MAP; # all maps
		55	our $LINK_MAP; # the special {link} map
		56	our $RANDOM_MAPS = cf::localdir . "/random";
		57	our %EXT_CORO; # coroutines bound to extensions
		58
		59	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		60	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		61
		62	binmode STDOUT;
		63	binmode STDERR;
		64
		65	# read virtual server time, if available
		66	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		67	open my $fh, "<", cf::localdir . "/runtime"
		68	or die "unable to read runtime file: $!";
		69	$RUNTIME = <$fh> + 0.;
		70	}
		71
		72	mkdir cf::localdir;
		73	mkdir cf::localdir . "/" . cf::playerdir;
		74	mkdir cf::localdir . "/" . cf::tmpdir;
		75	mkdir cf::localdir . "/" . cf::uniquedir;
		76	mkdir $RANDOM_MAPS;
		77
		78	# a special map that is always available
		79	our $LINK_MAP;
		80	our $EMERGENCY_POSITION;
		81
28	#############################################################################	82	#############################################################################
29		83
30	=head2 GLOBAL VARIABLES	84	=head2 GLOBAL VARIABLES
31		85
32	=over 4	86	=over 4
		87
		88	=item $cf::UPTIME
		89
		90	The timestamp of the server start (so not actually an uptime).
		91
		92	=item $cf::RUNTIME
		93
		94	The time this server has run, starts at 0 and is increased by $cf::TICK on
		95	every server tick.
33		96
34	=item $cf::LIBDIR	97	=item $cf::LIBDIR
35		98
36	The perl library directory, where extensions and cf-specific modules can	99	The perl library directory, where extensions and cf-specific modules can
37	be found. It will be added to C<@INC> automatically.	100	be found. It will be added to C<@INC> automatically.
38		101
		102	=item $cf::NOW
		103
		104	The time of the last (current) server tick.
		105
39	=item $cf::TICK	106	=item $cf::TICK
40		107
41	The interval between server ticks, in seconds.	108	The interval between server ticks, in seconds.
42		109
43	=item %cf::CFG	110	=item %cf::CFG
44		111
45	Configuration for the server, loaded from C</etc/crossfire/config>, or	112	Configuration for the server, loaded from C</etc/crossfire/config>, or
46	from wherever your confdir points to.	113	from wherever your confdir points to.
		114
		115	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		116
		117	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		118	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		119	processing has been done. Call C<< ->wait >> on them to maximise the
		120	window of cpu time available, or simply to synchronise to the server tick.
47		121
48	=back	122	=back
49		123
50	=cut	124	=cut
51		125
52	BEGIN {	126	BEGIN {
53	*CORE::GLOBAL::warn = sub {	127	*CORE::GLOBAL::warn = sub {
54	my $msg = join "", @_;	128	my $msg = join "", @_;
		129	utf8::encode $msg;
		130
55	$msg .= "\n"	131	$msg .= "\n"
56	unless $msg =~ /\n$/;	132	unless $msg =~ /\n$/;
57		133
58	print STDERR "cfperl: $msg";
59	LOG llevError, "cfperl: $msg";	134	LOG llevError, $msg;
60	};	135	};
61	}	136	}
62		137
		138	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		139	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		140	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		141	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		142	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
63	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	143	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
64		144
65	# we bless all objects into (empty) derived classes to force a method lookup	145	# we bless all objects into (empty) derived classes to force a method lookup
66	# within the Safe compartment.	146	# within the Safe compartment.
67	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	147	for my $pkg (qw(
		148	cf::global cf::attachable
		149	cf::object cf::object::player
		150	cf::client cf::player
		151	cf::arch cf::living
		152	cf::map cf::party cf::region
		153	)) {
68	no strict 'refs';	154	no strict 'refs';
69	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	155	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
70	}	156	}
71		157
72	$Event::DIED = sub {	158	$Event::DIED = sub {
…		…
74	};	160	};
75		161
76	my %ext_pkg;	162	my %ext_pkg;
77	my @exts;	163	my @exts;
78	my @hook;	164	my @hook;
79	my %command;
80	my %extcmd;
81		165
82	=head2 UTILITY FUNCTIONS	166	=head2 UTILITY FUNCTIONS
83		167
84	=over 4	168	=over 4
85		169
		170	=item dumpval $ref
		171
86	=cut	172	=cut
		173
		174	sub dumpval {
		175	eval {
		176	local $SIG{__DIE__};
		177	my $d;
		178	if (1) {
		179	$d = new Data::Dumper([$_[0]], ["*var"]);
		180	$d->Terse(1);
		181	$d->Indent(2);
		182	$d->Quotekeys(0);
		183	$d->Useqq(1);
		184	#$d->Bless(...);
		185	$d->Seen($_[1]) if @_ > 1;
		186	$d = $d->Dump();
		187	}
		188	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		189	$d
		190	} || "[unable to dump $_[0]: '$@']";
		191	}
87		192
88	use JSON::Syck (); # TODO# replace by JSON::PC once working	193	use JSON::Syck (); # TODO# replace by JSON::PC once working
89		194
90	=item $ref = cf::from_json $json	195	=item $ref = cf::from_json $json
91		196
…		…
107	sub to_json($) {	212	sub to_json($) {
108	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	213	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
109	JSON::Syck::Dump $_[0]	214	JSON::Syck::Dump $_[0]
110	}	215	}
111		216
		217	=item cf::lock_wait $string
		218
		219	Wait until the given lock is available. See cf::lock_acquire.
		220
		221	=item my $lock = cf::lock_acquire $string
		222
		223	Wait until the given lock is available and then acquires it and returns
		224	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		225	for example when the coroutine gets canceled), the lock is automatically
		226	returned.
		227
		228	Lock names should begin with a unique identifier (for example, cf::map::find
		229	uses map_find and cf::map::load uses map_load).
		230
		231	=cut
		232
		233	our %LOCK;
		234
		235	sub lock_wait($) {
		236	my ($key) = @_;
		237
		238	# wait for lock, if any
		239	while ($LOCK{$key}) {
		240	push @{ $LOCK{$key} }, $Coro::current;
		241	Coro::schedule;
		242	}
		243	}
		244
		245	sub lock_acquire($) {
		246	my ($key) = @_;
		247
		248	# wait, to be sure we are not locked
		249	lock_wait $key;
		250
		251	$LOCK{$key} = [];
		252
		253	Coro::guard {
		254	# wake up all waiters, to be on the safe side
		255	$_->ready for @{ delete $LOCK{$key} };
		256	}
		257	}
		258
		259	sub freeze_mainloop {
		260	return unless $TICK_WATCHER->is_active;
		261
		262	my $guard = Coro::guard { $TICK_WATCHER->start };
		263	$TICK_WATCHER->stop;
		264	$guard
		265	}
		266
		267	=item cf::async { BLOCK }
		268
		269	Currently the same as Coro::async_pool, meaning you cannot use
		270	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		271	thing you are allowed to do is call C<prio> on it.
		272
		273	=cut
		274
		275	BEGIN { *async = \&Coro::async_pool }
		276
		277	=item cf::sync_job { BLOCK }
		278
		279	The design of crossfire+ requires that the main coro ($Coro::main) is
		280	always able to handle events or runnable, as crossfire+ is only partly
		281	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		282
		283	If it must be done, put the blocking parts into C<sync_job>. This will run
		284	the given BLOCK in another coroutine while waiting for the result. The
		285	server will be frozen during this time, so the block should either finish
		286	fast or be very important.
		287
		288	=cut
		289
		290	sub sync_job(&) {
		291	my ($job) = @_;
		292
		293	if ($Coro::current == $Coro::main) {
		294	# this is the main coro, too bad, we have to block
		295	# till the operation succeeds, freezing the server :/
		296
		297	# TODO: use suspend/resume instead
		298	# (but this is cancel-safe)
		299	my $freeze_guard = freeze_mainloop;
		300
		301	my $busy = 1;
		302	my @res;
		303
		304	(async {
		305	@res = eval { $job->() };
		306	warn $@ if $@;
		307	undef $busy;
		308	})->prio (Coro::PRIO_MAX);
		309
		310	while ($busy) {
		311	Coro::cede or Event::one_event;
		312	}
		313
		314	wantarray ? @res : $res[0]
		315	} else {
		316	# we are in another coroutine, how wonderful, everything just works
		317
		318	$job->()
		319	}
		320	}
		321
		322	=item $coro = cf::async_ext { BLOCK }
		323
		324	Like async, but this coro is automcatially being canceled when the
		325	extension calling this is being unloaded.
		326
		327	=cut
		328
		329	sub async_ext(&) {
		330	my $cb = shift;
		331
		332	my $coro = &Coro::async ($cb);
		333
		334	$coro->on_destroy (sub {
		335	delete $EXT_CORO{$coro+0};
		336	});
		337	$EXT_CORO{$coro+0} = $coro;
		338
		339	$coro
		340	}
		341
		342	sub write_runtime {
		343	my $runtime = cf::localdir . "/runtime";
		344
		345	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		346	or return;
		347
		348	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		349	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		350	and return;
		351
		352	aio_fsync $fh
		353	and return;
		354
		355	close $fh
		356	or return;
		357
		358	aio_rename "$runtime~", $runtime
		359	and return;
		360
		361	1
		362	}
		363
112	=back	364	=back
113		365
114	=cut	366	=cut
115		367
116	#############################################################################	368	#############################################################################
117		369
118	=head2 EVENTS AND OBJECT ATTACHMENTS	370	package cf::path;
		371
		372	use overload
		373	'""' => \&as_string;
		374
		375	# used to convert map paths into valid unix filenames by repalcing / by ∕
		376	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		377
		378	sub new {
		379	my ($class, $path, $base) = @_;
		380
		381	$path = $path->as_string if ref $path;
		382
		383	my $self = bless { }, $class;
		384
		385	# {... are special paths that are not touched
		386	# ?xxx/... are special absolute paths
		387	# ?random/... random maps
		388	# /! non-realised random map exit
		389	# /... normal maps
		390	# ~/... per-player maps without a specific player (DO NOT USE)
		391	# ~user/... per-player map of a specific user
		392
		393	$path =~ s/$PATH_SEP/\//go;
		394
		395	if ($path =~ /^{/) {
		396	# fine as it is
		397	} elsif ($path =~ s{^\?random/}{}) {
		398	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		399	$self->{random} = cf::from_json $data;
		400	} else {
		401	if ($path =~ s{^~([^/]+)?}{}) {
		402	$self->{user_rel} = 1;
		403
		404	if (defined $1) {
		405	$self->{user} = $1;
		406	} elsif ($base =~ m{^~([^/]+)/}) {
		407	$self->{user} = $1;
		408	} else {
		409	warn "cannot resolve user-relative path without user <$path,$base>\n";
		410	}
		411	} elsif ($path =~ /^\//) {
		412	# already absolute
		413	} else {
		414	$base =~ s{[^/]+/?$}{};
		415	return $class->new ("$base/$path");
		416	}
		417
		418	for ($path) {
		419	redo if s{/\.?/}{/};
		420	redo if s{/[^/]+/\.\./}{/};
		421	}
		422	}
		423
		424	$self->{path} = $path;
		425
		426	$self
		427	}
		428
		429	# the name / primary key / in-game path
		430	sub as_string {
		431	my ($self) = @_;
		432
		433	$self->{user_rel} ? "~$self->{user}$self->{path}"
		434	: $self->{random} ? "?random/$self->{path}"
		435	: $self->{path}
		436	}
		437
		438	# the displayed name, this is a one way mapping
		439	sub visible_name {
		440	my ($self) = @_;
		441
		442	# if (my $rmp = $self->{random}) {
		443	# # todo: be more intelligent about this
		444	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		445	# } else {
		446	$self->as_string
		447	# }
		448	}
		449
		450	# escape the /'s in the path
		451	sub _escaped_path {
		452	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		453	$path
		454	}
		455
		456	# the original (read-only) location
		457	sub load_path {
		458	my ($self) = @_;
		459
		460	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		461	}
		462
		463	# the temporary/swap location
		464	sub save_path {
		465	my ($self) = @_;
		466
		467	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		468	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		469	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		470	}
		471
		472	# the unique path, might be eq to save_path
		473	sub uniq_path {
		474	my ($self) = @_;
		475
		476	$self->{user_rel} || $self->{random}
		477	? undef
		478	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		479	}
		480
		481	# return random map parameters, or undef
		482	sub random_map_params {
		483	my ($self) = @_;
		484
		485	$self->{random}
		486	}
		487
		488	# this is somewhat ugly, but style maps do need special treatment
		489	sub is_style_map {
		490	$_[0]{path} =~ m{^/styles/}
		491	}
		492
		493	package cf;
		494
		495	#############################################################################
		496
		497	=head2 ATTACHABLE OBJECTS
		498
		499	Many objects in crossfire are so-called attachable objects. That means you can
		500	attach callbacks/event handlers (a collection of which is called an "attachment")
		501	to it. All such attachable objects support the following methods.
		502
		503	In the following description, CLASS can be any of C<global>, C<object>
		504	C<player>, C<client> or C<map> (i.e. the attachable objects in
		505	crossfire+).
119		506
120	=over 4	507	=over 4
121		508
122	=item $object->attach ($attachment, key => $value...)
123
124	=item $object->detach ($attachment)
125
126	Attach/detach a pre-registered attachment to an object.
127
128	=item $player->attach ($attachment, key => $value...)
129
130	=item $player->detach ($attachment)
131
132	Attach/detach a pre-registered attachment to a player.
133
134	=item $map->attach ($attachment, key => $value...)	509	=item $attachable->attach ($attachment, key => $value...)
135		510
136	=item $map->detach ($attachment)	511	=item $attachable->detach ($attachment)
137		512
138	Attach/detach a pre-registered attachment to a map.	513	Attach/detach a pre-registered attachment to a specific object and give it
		514	the specified key/value pairs as arguments.
139		515
140	=item $bool = $object->attached ($name)	516	Example, attach a minesweeper attachment to the given object, making it a
		517	10x10 minesweeper game:
141		518
142	=item $bool = $player->attached ($name)	519	$obj->attach (minesweeper => width => 10, height => 10);
143		520
144	=item $bool = $map->attached ($name)	521	=item $bool = $attachable->attached ($name)
145		522
146	Checks wether the named attachment is currently attached to the object.	523	Checks wether the named attachment is currently attached to the object.
147		524
148	=item cf::attach_global ...	525	=item cf::CLASS->attach ...
149		526
150	Attach handlers for global events.	527	=item cf::CLASS->detach ...
151		528
152	This and all following C<attach_*>-functions expect any number of the	529	Define an anonymous attachment and attach it to all objects of the given
153	following handler/hook descriptions:	530	CLASS. See the next function for an explanation of its arguments.
		531
		532	You can attach to global events by using the C<cf::global> class.
		533
		534	Example, log all player logins:
		535
		536	cf::player->attach (
		537	on_login => sub {
		538	my ($pl) = @_;
		539	...
		540	},
		541	);
		542
		543	Example, attach to the jeweler skill:
		544
		545	cf::object->attach (
		546	type => cf::SKILL,
		547	subtype => cf::SK_JEWELER,
		548	on_use_skill => sub {
		549	my ($sk, $ob, $part, $dir, $msg) = @_;
		550	...
		551	},
		552	);
		553
		554	=item cf::CLASS::attachment $name, ...
		555
		556	Register an attachment by C<$name> through which attachable objects of the
		557	given CLASS can refer to this attachment.
		558
		559	Some classes such as crossfire maps and objects can specify attachments
		560	that are attached at load/instantiate time, thus the need for a name.
		561
		562	These calls expect any number of the following handler/hook descriptions:
154		563
155	=over 4	564	=over 4
156		565
157	=item prio => $number	566	=item prio => $number
158		567
…		…
160	by another C<prio> setting). Lower priority handlers get executed	569	by another C<prio> setting). Lower priority handlers get executed
161	earlier. The default priority is C<0>, and many built-in handlers are	570	earlier. The default priority is C<0>, and many built-in handlers are
162	registered at priority C<-1000>, so lower priorities should not be used	571	registered at priority C<-1000>, so lower priorities should not be used
163	unless you know what you are doing.	572	unless you know what you are doing.
164		573
		574	=item type => $type
		575
		576	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		577	given type of objects only (the additional parameter C<subtype> can be
		578	used to further limit to the given subtype).
		579
165	=item on_I<event> => \&cb	580	=item on_I<event> => \&cb
166		581
167	Call the given code reference whenever the named event happens (event is	582	Call the given code reference whenever the named event happens (event is
168	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	583	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
169	handlers are recognised generally depends on the type of object these	584	handlers are recognised generally depends on the type of object these
…		…
178	package and register them. Only handlers for eevents supported by the	593	package and register them. Only handlers for eevents supported by the
179	object/class are recognised.	594	object/class are recognised.
180		595
181	=back	596	=back
182		597
183	=item cf::attach_to_type $object_type, $subtype, ...	598	Example, define an attachment called "sockpuppet" that calls the given
		599	event handler when a monster attacks:
184		600
185	Attach handlers for a specific object type (e.g. TRANSPORT) and	601	cf::object::attachment sockpuppet =>
186	subtype. If C<$subtype> is zero or undef, matches all objects of the given	602	on_skill_attack => sub {
187	type.	603	my ($self, $victim) = @_;
188		604	...
189	=item cf::attach_to_objects ...
190
191	Attach handlers to all objects. Do not use this except for debugging or
192	very rare events, as handlers are (obviously) called for I<all> objects in
193	the game.
194
195	=item cf::attach_to_players ...
196
197	Attach handlers to all players.
198
199	=item cf::attach_to_maps ...
200
201	Attach handlers to all maps.
202
203	=item cf:register_attachment $name, ...
204
205	Register an attachment by name through which objects can refer to this
206	attachment.
207
208	=item cf:register_player_attachment $name, ...
209
210	Register an attachment by name through which players can refer to this
211	attachment.
212
213	=item cf:register_map_attachment $name, ...
214
215	Register an attachment by name through which maps can refer to this
216	attachment.
217
218	=cut
219
220	# the following variables are defined in .xs and must not be re-created
221	our @CB_GLOBAL = (); # registry for all global events
222	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
223	our @CB_PLAYER = ();
224	our @CB_TYPE = (); # registry for type (cf-object class) based events
225	our @CB_MAP = ();
226
227	my %attachment;
228
229	sub _attach_cb($\%$$$) {
230	my ($registry, $undo, $event, $prio, $cb) = @_;
231
232	use sort 'stable';
233
234	$cb = [$prio, $cb];
235
236	@{$registry->[$event]} = sort
237	{ $a->[0] cmp $b->[0] }
238	@{$registry->[$event] || []}, $cb;
239
240	push @{$undo->{cb}}, [$event, $cb];
241	}
242
243	# attach handles attaching event callbacks
244	# the only thing the caller has to do is pass the correct
245	# registry (== where the callback attaches to).
246	sub _attach(\@$@) {
247	my ($registry, $klass, @arg) = @_;
248
249	my $prio = 0;
250
251	my %undo = (
252	registry => $registry,
253	cb => [],
254	);
255
256	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
257
258	while (@arg) {
259	my $type = shift @arg;
260
261	if ($type eq "prio") {
262	$prio = shift @arg;
263
264	} elsif ($type eq "package") {
265	my $pkg = shift @arg;
266
267	while (my ($name, $id) = each %cb_id) {
268	if (my $cb = $pkg->can ($name)) {
269	_attach_cb $registry, %undo, $id, $prio, $cb;
270	}
271	}	605	}
272
273	} elsif (exists $cb_id{$type}) {
274	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
275
276	} elsif (ref $type) {
277	warn "attaching objects not supported, ignoring.\n";
278
279	} else {
280	shift @arg;
281	warn "attach argument '$type' not supported, ignoring.\n";
282	}
283	}
284
285	\%undo
286	}
287
288	sub _attach_attachment {
289	my ($obj, $name, %arg) = @_;
290
291	return if exists $obj->{_attachment}{$name};
292
293	my $res;
294
295	if (my $attach = $attachment{$name}) {
296	my $registry = $obj->registry;
297
298	for (@$attach) {
299	my ($klass, @attach) = @$_;
300	$res = _attach @$registry, $klass, @attach;
301	}
302
303	$obj->{$name} = \%arg;
304	} else {
305	warn "object uses attachment '$name' that is not available, postponing.\n";
306	}
307
308	$obj->{_attachment}{$name} = undef;
309
310	$res->{attachment} = $name;
311	$res
312	}
313
314	*cf::object::attach =
315	*cf::player::attach =
316	*cf::map::attach = sub {
317	my ($obj, $name, %arg) = @_;
318
319	_attach_attachment $obj, $name, %arg;
320	};
321
322	# all those should be optimised
323	*cf::object::detach =
324	*cf::player::detach =
325	*cf::map::detach = sub {
326	my ($obj, $name) = @_;
327
328	delete $obj->{_attachment}{$name};
329	reattach ($obj);
330	};
331
332	*cf::object::attached =
333	*cf::player::attached =
334	*cf::map::attached = sub {
335	my ($obj, $name) = @_;
336
337	exists $obj->{_attachment}{$name}
338	};
339
340	sub attach_global {
341	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
342	}
343
344	sub attach_to_type {
345	my $type = shift;
346	my $subtype = shift;
347
348	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
349	}
350
351	sub attach_to_objects {
352	_attach @CB_OBJECT, KLASS_OBJECT, @_
353	}
354
355	sub attach_to_players {
356	_attach @CB_PLAYER, KLASS_PLAYER, @_
357	}
358
359	sub attach_to_maps {
360	_attach @CB_MAP, KLASS_MAP, @_
361	}
362
363	sub register_attachment {
364	my $name = shift;
365
366	$attachment{$name} = [[KLASS_OBJECT, @_]];
367	}
368
369	sub register_player_attachment {
370	my $name = shift;
371
372	$attachment{$name} = [[KLASS_PLAYER, @_]];
373	}
374
375	sub register_map_attachment {
376	my $name = shift;
377
378	$attachment{$name} = [[KLASS_MAP, @_]];
379	}
380
381	our $override;
382	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
383
384	sub override {
385	$override = 1;
386	@invoke_results = ();
387	}
388
389	sub do_invoke {
390	my $event = shift;
391	my $callbacks = shift;
392
393	@invoke_results = ();
394
395	local $override;
396
397	for (@$callbacks) {
398	eval { &{$_->[1]} };
399
400	if ($@) {
401	warn "$@";
402	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
403	override;
404	}
405
406	return 1 if $override;
407	}
408
409	0	606	}
410	}
411		607
412	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	608	=item $attachable->valid
413
414	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
415
416	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
417
418	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
419
420	Generate a global/object/player/map-specific event with the given arguments.
421
422	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
423	removed in future versions), and there is no public API to access override
424	results (if you must, access C<@cf::invoke_results> directly).
425
426	=back
427
428	=cut
429
430	#############################################################################
431
432	=head2 METHODS VALID FOR ALL CORE OBJECTS
433
434	=over 4
435
436	=item $object->valid, $player->valid, $map->valid
437		609
438	Just because you have a perl object does not mean that the corresponding	610	Just because you have a perl object does not mean that the corresponding
439	C-level object still exists. If you try to access an object that has no	611	C-level object still exists. If you try to access an object that has no
440	valid C counterpart anymore you get an exception at runtime. This method	612	valid C counterpart anymore you get an exception at runtime. This method
441	can be used to test for existence of the C object part without causing an	613	can be used to test for existence of the C object part without causing an
442	exception.	614	exception.
443		615
		616	=cut
		617
		618	# the following variables are defined in .xs and must not be re-created
		619	our @CB_GLOBAL = (); # registry for all global events
		620	our @CB_ATTACHABLE = (); # registry for all attachables
		621	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		622	our @CB_PLAYER = ();
		623	our @CB_CLIENT = ();
		624	our @CB_TYPE = (); # registry for type (cf-object class) based events
		625	our @CB_MAP = ();
		626
		627	my %attachment;
		628
		629	sub _attach_cb($$$$) {
		630	my ($registry, $event, $prio, $cb) = @_;
		631
		632	use sort 'stable';
		633
		634	$cb = [$prio, $cb];
		635
		636	@{$registry->[$event]} = sort
		637	{ $a->[0] cmp $b->[0] }
		638	@{$registry->[$event] || []}, $cb;
		639	}
		640
		641	# hack
		642	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		643
		644	# attach handles attaching event callbacks
		645	# the only thing the caller has to do is pass the correct
		646	# registry (== where the callback attaches to).
		647	sub _attach {
		648	my ($registry, $klass, @arg) = @_;
		649
		650	my $object_type;
		651	my $prio = 0;
		652	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		653
		654	#TODO: get rid of this hack
		655	if ($attachable_klass{$klass}) {
		656	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		657	}
		658
		659	while (@arg) {
		660	my $type = shift @arg;
		661
		662	if ($type eq "prio") {
		663	$prio = shift @arg;
		664
		665	} elsif ($type eq "type") {
		666	$object_type = shift @arg;
		667	$registry = $CB_TYPE[$object_type] ||= [];
		668
		669	} elsif ($type eq "subtype") {
		670	defined $object_type or Carp::croak "subtype specified without type";
		671	my $object_subtype = shift @arg;
		672	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		673
		674	} elsif ($type eq "package") {
		675	my $pkg = shift @arg;
		676
		677	while (my ($name, $id) = each %cb_id) {
		678	if (my $cb = $pkg->can ($name)) {
		679	_attach_cb $registry, $id, $prio, $cb;
		680	}
		681	}
		682
		683	} elsif (exists $cb_id{$type}) {
		684	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		685
		686	} elsif (ref $type) {
		687	warn "attaching objects not supported, ignoring.\n";
		688
		689	} else {
		690	shift @arg;
		691	warn "attach argument '$type' not supported, ignoring.\n";
		692	}
		693	}
		694	}
		695
		696	sub _object_attach {
		697	my ($obj, $name, %arg) = @_;
		698
		699	return if exists $obj->{_attachment}{$name};
		700
		701	if (my $attach = $attachment{$name}) {
		702	my $registry = $obj->registry;
		703
		704	for (@$attach) {
		705	my ($klass, @attach) = @$_;
		706	_attach $registry, $klass, @attach;
		707	}
		708
		709	$obj->{$name} = \%arg;
		710	} else {
		711	warn "object uses attachment '$name' that is not available, postponing.\n";
		712	}
		713
		714	$obj->{_attachment}{$name} = undef;
		715	}
		716
		717	sub cf::attachable::attach {
		718	if (ref $_[0]) {
		719	_object_attach @_;
		720	} else {
		721	_attach shift->_attach_registry, @_;
		722	}
		723	};
		724
		725	# all those should be optimised
		726	sub cf::attachable::detach {
		727	my ($obj, $name) = @_;
		728
		729	if (ref $obj) {
		730	delete $obj->{_attachment}{$name};
		731	reattach ($obj);
		732	} else {
		733	Carp::croak "cannot, currently, detach class attachments";
		734	}
		735	};
		736
		737	sub cf::attachable::attached {
		738	my ($obj, $name) = @_;
		739
		740	exists $obj->{_attachment}{$name}
		741	}
		742
		743	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		744	eval "#line " . __LINE__ . " 'cf.pm'
		745	sub cf::\L$klass\E::_attach_registry {
		746	(\\\@CB_$klass, KLASS_$klass)
		747	}
		748
		749	sub cf::\L$klass\E::attachment {
		750	my \$name = shift;
		751
		752	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		753	}
		754	";
		755	die if $@;
		756	}
		757
		758	our $override;
		759	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		760
		761	sub override {
		762	$override = 1;
		763	@invoke_results = ();
		764	}
		765
		766	sub do_invoke {
		767	my $event = shift;
		768	my $callbacks = shift;
		769
		770	@invoke_results = ();
		771
		772	local $override;
		773
		774	for (@$callbacks) {
		775	eval { &{$_->[1]} };
		776
		777	if ($@) {
		778	warn "$@";
		779	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		780	override;
		781	}
		782
		783	return 1 if $override;
		784	}
		785
		786	0
		787	}
		788
		789	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		790
		791	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		792
		793	Generate an object-specific event with the given arguments.
		794
		795	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		796	removed in future versions), and there is no public API to access override
		797	results (if you must, access C<@cf::invoke_results> directly).
		798
444	=back	799	=back
445		800
446	=cut	801	=cut
447
448	*cf::object::valid =
449	*cf::player::valid =
450	*cf::map::valid = \&cf::_valid;
451		802
452	#############################################################################	803	#############################################################################
453	# object support	804	# object support
454		805
455	sub instantiate {
456	my ($obj, $data) = @_;
457
458	$data = from_json $data;
459
460	for (@$data) {
461	my ($name, $args) = @$_;
462
463	$obj->attach ($name, %{$args || {} });
464	}
465	}
466
467	# basically do the same as instantiate, without calling instantiate
468	sub reattach {	806	sub reattach {
		807	# basically do the same as instantiate, without calling instantiate
469	my ($obj) = @_;	808	my ($obj) = @_;
		809
470	my $registry = $obj->registry;	810	my $registry = $obj->registry;
471		811
472	@$registry = ();	812	@$registry = ();
473		813
474	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	814	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
475		815
476	for my $name (keys %{ $obj->{_attachment} || {} }) {	816	for my $name (keys %{ $obj->{_attachment} || {} }) {
477	if (my $attach = $attachment{$name}) {	817	if (my $attach = $attachment{$name}) {
478	for (@$attach) {	818	for (@$attach) {
479	my ($klass, @attach) = @$_;	819	my ($klass, @attach) = @$_;
480	_attach @$registry, $klass, @attach;	820	_attach $registry, $klass, @attach;
481	}	821	}
482	} else {	822	} else {
483	warn "object uses attachment '$name' that is not available, postponing.\n";	823	warn "object uses attachment '$name' that is not available, postponing.\n";
484	}	824	}
485	}	825	}
486	}	826	}
487		827
488	sub object_freezer_save {	828	cf::attachable->attach (
489	my ($filename, $rdata, $objs) = @_;
490
491	if (length $$rdata) {
492	warn sprintf "saving %s (%d,%d)\n",
493	$filename, length $$rdata, scalar @$objs;
494
495	if (open my $fh, ">:raw", "$filename~") {
496	chmod SAVE_MODE, $fh;
497	syswrite $fh, $$rdata;
498	close $fh;
499
500	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
501	chmod SAVE_MODE, $fh;
502	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
503	close $fh;
504	rename "$filename.pst~", "$filename.pst";
505	} else {
506	unlink "$filename.pst";
507	}
508
509	rename "$filename~", $filename;
510	} else {
511	warn "FATAL: $filename~: $!\n";
512	}
513	} else {
514	unlink $filename;
515	unlink "$filename.pst";
516	}
517	}
518
519	sub object_thawer_load {
520	my ($filename) = @_;
521
522	local $/;
523
524	my $av;
525
526	#TODO: use sysread etc.
527	if (open my $data, "<:raw:perlio", $filename) {
528	$data = <$data>;
529	if (open my $pst, "<:raw:perlio", "$filename.pst") {
530	$av = eval { (Storable::thaw <$pst>)->{objs} };
531	}
532	return ($data, $av);
533	}
534
535	()
536	}
537
538	attach_to_objects
539	prio => -1000000,	829	prio => -1000000,
		830	on_instantiate => sub {
		831	my ($obj, $data) = @_;
		832
		833	$data = from_json $data;
		834
		835	for (@$data) {
		836	my ($name, $args) = @$_;
		837
		838	$obj->attach ($name, %{$args || {} });
		839	}
		840	},
		841	on_reattach => \&reattach,
540	on_clone => sub {	842	on_clone => sub {
541	my ($src, $dst) = @_;	843	my ($src, $dst) = @_;
542		844
543	@{$dst->registry} = @{$src->registry};	845	@{$dst->registry} = @{$src->registry};
544		846
545	%$dst = %$src;	847	%$dst = %$src;
546		848
547	%{$dst->{_attachment}} = %{$src->{_attachment}}	849	%{$dst->{_attachment}} = %{$src->{_attachment}}
548	if exists $src->{_attachment};	850	if exists $src->{_attachment};
549	},	851	},
550	;	852	);
		853
		854	sub object_freezer_save {
		855	my ($filename, $rdata, $objs) = @_;
		856
		857	sync_job {
		858	if (length $$rdata) {
		859	warn sprintf "saving %s (%d,%d)\n",
		860	$filename, length $$rdata, scalar @$objs;
		861
		862	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		863	chmod SAVE_MODE, $fh;
		864	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		865	aio_fsync $fh;
		866	close $fh;
		867
		868	if (@$objs) {
		869	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		870	chmod SAVE_MODE, $fh;
		871	my $data = Storable::nfreeze { version => 1, objs => $objs };
		872	aio_write $fh, 0, (length $data), $data, 0;
		873	aio_fsync $fh;
		874	close $fh;
		875	aio_rename "$filename.pst~", "$filename.pst";
		876	}
		877	} else {
		878	aio_unlink "$filename.pst";
		879	}
		880
		881	aio_rename "$filename~", $filename;
		882	} else {
		883	warn "FATAL: $filename~: $!\n";
		884	}
		885	} else {
		886	aio_unlink $filename;
		887	aio_unlink "$filename.pst";
		888	}
		889	}
		890	}
		891
		892	sub object_freezer_as_string {
		893	my ($rdata, $objs) = @_;
		894
		895	use Data::Dumper;
		896
		897	$$rdata . Dumper $objs
		898	}
		899
		900	sub object_thawer_load {
		901	my ($filename) = @_;
		902
		903	my ($data, $av);
		904
		905	(aio_load $filename, $data) >= 0
		906	or return;
		907
		908	unless (aio_stat "$filename.pst") {
		909	(aio_load "$filename.pst", $av) >= 0
		910	or return;
		911	$av = eval { (Storable::thaw $av)->{objs} };
		912	}
		913
		914	warn sprintf "loading %s (%d)\n",
		915	$filename, length $data, scalar @{$av || []};#d#
		916	return ($data, $av);
		917	}
551		918
552	#############################################################################	919	#############################################################################
553	# old plug-in events	920	# command handling &c
554		921
555	sub inject_event {	922	=item cf::register_command $name => \&callback($ob,$args);
556	my $extension = shift;
557	my $event_code = shift;
558		923
559	my $cb = $hook[$event_code]{$extension}	924	Register a callback for execution when the client sends the user command
560	or return;	925	$name.
561		926
562	&$cb	927	=cut
563	}
564
565	sub inject_global_event {
566	my $event = shift;
567
568	my $cb = $hook[$event]
569	or return;
570
571	List::Util::max map &$_, values %$cb
572	}
573
574	sub inject_command {
575	my ($name, $obj, $params) = @_;
576
577	for my $cmd (@{ $command{$name} }) {
578	$cmd->[1]->($obj, $params);
579	}
580
581	-1
582	}
583		928
584	sub register_command {	929	sub register_command {
585	my ($name, $time, $cb) = @_;	930	my ($name, $cb) = @_;
586		931
587	my $caller = caller;	932	my $caller = caller;
588	#warn "registering command '$name/$time' to '$caller'";	933	#warn "registering command '$name/$time' to '$caller'";
589		934
590	push @{ $command{$name} }, [$time, $cb, $caller];	935	push @{ $COMMAND{$name} }, [$caller, $cb];
591	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
592	}	936	}
		937
		938	=item cf::register_extcmd $name => \&callback($pl,$packet);
		939
		940	Register a callbackf ro execution when the client sends an extcmd packet.
		941
		942	If the callback returns something, it is sent back as if reply was being
		943	called.
		944
		945	=cut
593		946
594	sub register_extcmd {	947	sub register_extcmd {
595	my ($name, $cb) = @_;	948	my ($name, $cb) = @_;
596		949
597	my $caller = caller;	950	my $caller = caller;
598	#warn "registering extcmd '$name' to '$caller'";	951	#warn "registering extcmd '$name' to '$caller'";
599		952
600	$extcmd{$name} = [$cb, $caller];	953	$EXTCMD{$name} = [$cb, $caller];
601	}	954	}
		955
		956	cf::player->attach (
		957	on_command => sub {
		958	my ($pl, $name, $params) = @_;
		959
		960	my $cb = $COMMAND{$name}
		961	or return;
		962
		963	for my $cmd (@$cb) {
		964	$cmd->[1]->($pl->ob, $params);
		965	}
		966
		967	cf::override;
		968	},
		969	on_extcmd => sub {
		970	my ($pl, $buf) = @_;
		971
		972	my $msg = eval { from_json $buf };
		973
		974	if (ref $msg) {
		975	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		976	if (my %reply = $cb->[0]->($pl, $msg)) {
		977	$pl->ext_reply ($msg->{msgid}, %reply);
		978	}
		979	}
		980	} else {
		981	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		982	}
		983
		984	cf::override;
		985	},
		986	);
602		987
603	sub register {	988	sub register {
604	my ($base, $pkg) = @_;	989	my ($base, $pkg) = @_;
605		990
606	#TODO	991	#TODO
…		…
625	. "#line 1 \"$path\"\n{\n"	1010	. "#line 1 \"$path\"\n{\n"
626	. (do { local $/; <$fh> })	1011	. (do { local $/; <$fh> })
627	. "\n};\n1";	1012	. "\n};\n1";
628		1013
629	eval $source	1014	eval $source
630	or die "$path: $@";	1015	or die $@ ? "$path: $@\n"
		1016	: "extension disabled.\n";
631		1017
632	push @exts, $pkg;	1018	push @exts, $pkg;
633	$ext_pkg{$base} = $pkg;	1019	$ext_pkg{$base} = $pkg;
634		1020
635	# no strict 'refs';	1021	# no strict 'refs';
…		…
648	# for my $idx (0 .. $#PLUGIN_EVENT) {	1034	# for my $idx (0 .. $#PLUGIN_EVENT) {
649	# delete $hook[$idx]{$pkg};	1035	# delete $hook[$idx]{$pkg};
650	# }	1036	# }
651		1037
652	# remove commands	1038	# remove commands
653	for my $name (keys %command) {	1039	for my $name (keys %COMMAND) {
654	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1040	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
655		1041
656	if (@cb) {	1042	if (@cb) {
657	$command{$name} = \@cb;	1043	$COMMAND{$name} = \@cb;
658	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
659	} else {	1044	} else {
660	delete $command{$name};
661	delete $COMMAND{"$name\000"};	1045	delete $COMMAND{$name};
662	}	1046	}
663	}	1047	}
664		1048
665	# remove extcmds	1049	# remove extcmds
666	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1050	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
667	delete $extcmd{$name};	1051	delete $EXTCMD{$name};
668	}	1052	}
669		1053
670	if (my $cb = $pkg->can ("unload")) {	1054	if (my $cb = $pkg->can ("unload")) {
671	eval {	1055	eval {
672	$cb->($pkg);	1056	$cb->($pkg);
…		…
676		1060
677	Symbol::delete_package $pkg;	1061	Symbol::delete_package $pkg;
678	}	1062	}
679		1063
680	sub load_extensions {	1064	sub load_extensions {
681	my $LIBDIR = maps_directory "perl";
682
683	for my $ext (<$LIBDIR/*.ext>) {	1065	for my $ext (<$LIBDIR/*.ext>) {
684	next unless -r $ext;	1066	next unless -r $ext;
685	eval {	1067	eval {
686	load_extension $ext;	1068	load_extension $ext;
687	1	1069	1
688	} or warn "$ext not loaded: $@";	1070	} or warn "$ext not loaded: $@";
689	}	1071	}
690	}	1072	}
691		1073
692	#############################################################################	1074	#############################################################################
693	# extcmd framework, basically convert ext <msg>
694	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
695
696	attach_to_players
697	on_extcmd => sub {
698	my ($pl, $buf) = @_;
699
700	my $msg = eval { from_json $buf };
701
702	if (ref $msg) {
703	if (my $cb = $extcmd{$msg->{msgtype}}) {
704	if (my %reply = $cb->[0]->($pl, $msg)) {
705	$pl->ext_reply ($msg->{msgid}, %reply);
706	}
707	}
708	} else {
709	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
710	}
711
712	cf::override;
713	},
714	;
715
716	#############################################################################
717	# load/save/clean perl data associated with a map	1075	# load/save/clean perl data associated with a map
718		1076
719	*cf::mapsupport::on_clean = sub {	1077	*cf::mapsupport::on_clean = sub {
720	my ($map) = @_;	1078	my ($map) = @_;
721		1079
…		…
723	defined $path or return;	1081	defined $path or return;
724		1082
725	unlink "$path.pst";	1083	unlink "$path.pst";
726	};	1084	};
727		1085
728	attach_to_maps prio => -10000, package => cf::mapsupport::;	1086	cf::map->attach (prio => -10000, package => cf::mapsupport::);
729		1087
730	#############################################################################	1088	#############################################################################
731	# load/save perl data associated with player->ob objects
732		1089
733	sub all_objects(@) {	1090	=head2 CORE EXTENSIONS
734	@_, map all_objects ($_->inv), @_
735	}
736		1091
737	# TODO: compatibility cruft, remove when no longer needed	1092	Functions and methods that extend core crossfire objects.
738	attach_to_players	1093
739	on_load => sub {	1094	=cut
		1095
		1096	package cf::player;
		1097
		1098	use Coro::AIO;
		1099
		1100	=head3 cf::player
		1101
		1102	=over 4
		1103
		1104	=item cf::player::find $login
		1105
		1106	Returns the given player object, loading it if necessary (might block).
		1107
		1108	=cut
		1109
		1110	sub playerdir($) {
		1111	cf::localdir
		1112	. "/"
		1113	. cf::playerdir
		1114	. "/"
		1115	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1116	}
		1117
		1118	sub path($) {
		1119	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1120
		1121	(playerdir $login) . "/$login.pl"
		1122	}
		1123
		1124	sub find_active($) {
		1125	$cf::PLAYER{$_[0]}
		1126	and $cf::PLAYER{$_[0]}->active
		1127	and $cf::PLAYER{$_[0]}
		1128	}
		1129
		1130	sub exists($) {
		1131	my ($login) = @_;
		1132
		1133	$cf::PLAYER{$login}
		1134	or cf::sync_job { !aio_stat $login }
		1135	}
		1136
		1137	sub find($) {
		1138	return $cf::PLAYER{$_[0]} || do {
		1139	my $login = $_[0];
		1140
		1141	my $guard = cf::lock_acquire "user_find:$login";
		1142
		1143	$cf::PLAYER{$_[0]} || do {
		1144	my $pl = load_pl path $login
		1145	or return;
		1146	$cf::PLAYER{$login} = $pl
		1147	}
		1148	}
		1149	}
		1150
		1151	sub save($) {
		1152	my ($pl) = @_;
		1153
		1154	return if $pl->{deny_save};
		1155
		1156	my $path = path $pl;
		1157	my $guard = cf::lock_acquire "user_save:$path";
		1158
		1159	return if $pl->{deny_save};
		1160
		1161	aio_mkdir playerdir $pl, 0770;
		1162	$pl->{last_save} = $cf::RUNTIME;
		1163
		1164	$pl->save_pl ($path);
		1165	Coro::cede;
		1166	}
		1167
		1168	sub new($) {
		1169	my ($login) = @_;
		1170
		1171	my $self = create;
		1172
		1173	$self->ob->name ($login);
		1174	$self->{deny_save} = 1;
		1175
		1176	$cf::PLAYER{$login} = $self;
		1177
		1178	$self
		1179	}
		1180
		1181	=item $pl->quit_character
		1182
		1183	Nukes the player without looking back. If logged in, the connection will
		1184	be destroyed. May block for a long time.
		1185
		1186	=cut
		1187
		1188	sub quit_character {
		1189	my ($pl) = @_;
		1190
		1191	$pl->{deny_save} = 1;
		1192	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1193
		1194	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1195	$pl->deactivate;
		1196	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1197	$pl->ns->destroy if $pl->ns;
		1198
		1199	my $path = playerdir $pl;
		1200	my $temp = "$path~$cf::RUNTIME~deleting~";
		1201	aio_rename $path, $temp;
		1202	delete $cf::PLAYER{$pl->ob->name};
		1203	$pl->destroy;
		1204	IO::AIO::aio_rmtree $temp;
		1205	}
		1206
		1207	=item cf::player::list_logins
		1208
		1209	Returns am arrayref of all valid playernames in the system, can take a
		1210	while and may block, so not sync_job-capable, ever.
		1211
		1212	=cut
		1213
		1214	sub list_logins {
		1215	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1216	or return [];
		1217
		1218	my @logins;
		1219
		1220	for my $login (@$dirs) {
		1221	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1222	aio_read $fh, 0, 512, my $buf, 0 or next;
		1223	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1224
		1225	utf8::decode $login;
		1226	push @logins, $login;
		1227	}
		1228
		1229	\@logins
		1230	}
		1231
		1232	=item $player->maps
		1233
		1234	Returns an arrayref of cf::path's of all maps that are private for this
		1235	player. May block.
		1236
		1237	=cut
		1238
		1239	sub maps($) {
		1240	my ($pl) = @_;
		1241
		1242	my $files = aio_readdir playerdir $pl
		1243	or return;
		1244
		1245	my @paths;
		1246
		1247	for (@$files) {
		1248	utf8::decode $_;
		1249	next if /\.(?:pl|pst)$/;
		1250	next unless /^$PATH_SEP/o;
		1251
		1252	push @paths, new cf::path "~" . $pl->ob->name . "/" . $_;
		1253	}
		1254
		1255	\@paths
		1256	}
		1257
		1258	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1259
		1260	Sends an ext reply to the player.
		1261
		1262	=cut
		1263
		1264	sub ext_reply($$$%) {
		1265	my ($self, $id, %msg) = @_;
		1266
		1267	$msg{msgid} = $id;
		1268
		1269	$self->send ("ext " . cf::to_json \%msg);
		1270	}
		1271
		1272	package cf;
		1273
		1274	=back
		1275
		1276
		1277	=head3 cf::map
		1278
		1279	=over 4
		1280
		1281	=cut
		1282
		1283	package cf::map;
		1284
		1285	use Fcntl;
		1286	use Coro::AIO;
		1287
		1288	our $MAX_RESET = 3600;
		1289	our $DEFAULT_RESET = 3000;
		1290
		1291	sub generate_random_map {
		1292	my ($path, $rmp) = @_;
		1293
		1294	# mit "rum" bekleckern, nicht
		1295	cf::map::_create_random_map
		1296	$path,
		1297	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1298	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1299	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1300	$rmp->{exit_on_final_map},
		1301	$rmp->{xsize}, $rmp->{ysize},
		1302	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1303	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1304	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1305	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1306	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1307	(cf::region::find $rmp->{region})
		1308	}
		1309
		1310	# and all this just because we cannot iterate over
		1311	# all maps in C++...
		1312	sub change_all_map_light {
		1313	my ($change) = @_;
		1314
		1315	$_->change_map_light ($change)
		1316	for grep $_->outdoor, values %cf::MAP;
		1317	}
		1318
		1319	sub try_load_header($) {
740	my ($pl, $path) = @_;	1320	my ($path) = @_;
741		1321
742	for my $o (all_objects $pl->ob) {	1322	utf8::encode $path;
743	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1323	aio_open $path, O_RDONLY, 0
744	$o->set_ob_key_value ("_perl_data");	1324	or return;
745		1325
746	%$o = %{ Storable::thaw pack "H*", $value };	1326	my $map = cf::map::new
		1327	or return;
		1328
		1329	# for better error messages only, will be overwritten
		1330	$map->path ($path);
		1331
		1332	$map->load_header ($path)
		1333	or return;
		1334
		1335	$map->{load_path} = $path;
		1336
		1337	$map
		1338	}
		1339
		1340	sub find;
		1341	sub find {
		1342	my ($path, $origin) = @_;
		1343
		1344	#warn "find<$path,$origin>\n";#d#
		1345
		1346	$path = new cf::path $path, $origin && $origin->path;
		1347	my $key = $path->as_string;
		1348
		1349	cf::lock_wait "map_find:$key";
		1350
		1351	$cf::MAP{$key} || do {
		1352	my $guard = cf::lock_acquire "map_find:$key";
		1353
		1354	# do it the slow way
		1355	my $map = try_load_header $path->save_path;
		1356
		1357	Coro::cede;
		1358
		1359	if ($map) {
		1360	$map->last_access ((delete $map->{last_access})
		1361	|| $cf::RUNTIME); #d#
		1362	# safety
		1363	$map->{instantiate_time} = $cf::RUNTIME
		1364	if $map->{instantiate_time} > $cf::RUNTIME;
		1365	} else {
		1366	if (my $rmp = $path->random_map_params) {
		1367	$map = generate_random_map $key, $rmp;
		1368	} else {
		1369	$map = try_load_header $path->load_path;
747	}	1370	}
		1371
		1372	$map or return;
		1373
		1374	$map->{load_original} = 1;
		1375	$map->{instantiate_time} = $cf::RUNTIME;
		1376	$map->last_access ($cf::RUNTIME);
		1377	$map->instantiate;
		1378
		1379	# per-player maps become, after loading, normal maps
		1380	$map->per_player (0) if $path->{user_rel};
748	}	1381	}
		1382
		1383	$map->path ($key);
		1384	$map->{path} = $path;
		1385	$map->{last_save} = $cf::RUNTIME;
		1386
		1387	Coro::cede;
		1388
		1389	if ($map->should_reset) {
		1390	$map->reset;
		1391	undef $guard;
		1392	$map = find $path
		1393	or return;
		1394	}
		1395
		1396	$cf::MAP{$key} = $map
749	},	1397	}
750	;	1398	}
751		1399
752	#############################################################################	1400	sub load {
		1401	my ($self) = @_;
753		1402
754	=head2 CORE EXTENSIONS	1403	my $path = $self->{path};
		1404	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
755		1405
756	Functions and methods that extend core crossfire objects.	1406	return if $self->in_memory != cf::MAP_SWAPPED;
		1407
		1408	$self->in_memory (cf::MAP_LOADING);
		1409
		1410	$self->alloc;
		1411	$self->load_objects ($self->{load_path}, 1)
		1412	or return;
		1413
		1414	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1415	if delete $self->{load_original};
		1416
		1417	if (my $uniq = $path->uniq_path) {
		1418	utf8::encode $uniq;
		1419	if (aio_open $uniq, O_RDONLY, 0) {
		1420	$self->clear_unique_items;
		1421	$self->load_objects ($uniq, 0);
		1422	}
		1423	}
		1424
		1425	Coro::cede;
		1426
		1427	# now do the right thing for maps
		1428	$self->link_multipart_objects;
		1429
		1430	if ($self->{path}->is_style_map) {
		1431	$self->{deny_save} = 1;
		1432	$self->{deny_reset} = 1;
		1433	} else {
		1434	$self->fix_auto_apply;
		1435	$self->decay_objects;
		1436	$self->update_buttons;
		1437	$self->set_darkness_map;
		1438	$self->difficulty ($self->estimate_difficulty)
		1439	unless $self->difficulty;
		1440	$self->activate;
		1441	}
		1442
		1443	Coro::cede;
		1444
		1445	$self->in_memory (cf::MAP_IN_MEMORY);
		1446	}
		1447
		1448	# find and load all maps in the 3x3 area around a map
		1449	sub load_diag {
		1450	my ($map) = @_;
		1451
		1452	my @diag; # diagonal neighbours
		1453
		1454	for (0 .. 3) {
		1455	my $neigh = $map->tile_path ($_)
		1456	or next;
		1457	$neigh = find $neigh, $map
		1458	or next;
		1459	$neigh->load;
		1460
		1461	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1462	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1463	}
		1464
		1465	for (@diag) {
		1466	my $neigh = find @$_
		1467	or next;
		1468	$neigh->load;
		1469	}
		1470	}
		1471
		1472	sub find_sync {
		1473	my ($path, $origin) = @_;
		1474
		1475	cf::sync_job { find $path, $origin }
		1476	}
		1477
		1478	sub do_load_sync {
		1479	my ($map) = @_;
		1480
		1481	cf::sync_job { $map->load };
		1482	}
		1483
		1484	our %MAP_PREFETCH;
		1485	our $MAP_PREFETCHER = Coro::async {
		1486	while () {
		1487	while (%MAP_PREFETCH) {
		1488	my $key = each %MAP_PREFETCH
		1489	or next;
		1490	my $path = delete $MAP_PREFETCH{$key};
		1491
		1492	my $map = find $path
		1493	or next;
		1494	$map->load;
		1495	}
		1496	Coro::schedule;
		1497	}
		1498	};
		1499
		1500	sub find_async {
		1501	my ($path, $origin) = @_;
		1502
		1503	$path = new cf::path $path, $origin && $origin->path;
		1504	my $key = $path->as_string;
		1505
		1506	if (my $map = $cf::MAP{$key}) {
		1507	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1508	}
		1509
		1510	$MAP_PREFETCH{$key} = $path;
		1511	$MAP_PREFETCHER->ready;
		1512
		1513	()
		1514	}
		1515
		1516	sub save {
		1517	my ($self) = @_;
		1518
		1519	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1520
		1521	$self->{last_save} = $cf::RUNTIME;
		1522
		1523	return unless $self->dirty;
		1524
		1525	my $save = $self->{path}->save_path; utf8::encode $save;
		1526	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1527
		1528	$self->{load_path} = $save;
		1529
		1530	return if $self->{deny_save};
		1531
		1532	local $self->{last_access} = $self->last_access;#d#
		1533
		1534	cf::async {
		1535	$_->contr->save for $self->players;
		1536	};
		1537
		1538	if ($uniq) {
		1539	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1540	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1541	} else {
		1542	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1543	}
		1544	}
		1545
		1546	sub swap_out {
		1547	my ($self) = @_;
		1548
		1549	# save first because save cedes
		1550	$self->save;
		1551
		1552	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1553
		1554	return if $self->players;
		1555	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1556	return if $self->{deny_save};
		1557
		1558	$self->clear;
		1559	$self->in_memory (cf::MAP_SWAPPED);
		1560	}
		1561
		1562	sub reset_at {
		1563	my ($self) = @_;
		1564
		1565	# TODO: safety, remove and allow resettable per-player maps
		1566	return 1e99 if $self->{path}{user_rel};
		1567	return 1e99 if $self->{deny_reset};
		1568
		1569	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1570	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1571
		1572	$time + $to
		1573	}
		1574
		1575	sub should_reset {
		1576	my ($self) = @_;
		1577
		1578	$self->reset_at <= $cf::RUNTIME
		1579	}
		1580
		1581	sub unlink_save {
		1582	my ($self) = @_;
		1583
		1584	utf8::encode (my $save = $self->{path}->save_path);
		1585	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1586	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1587	}
		1588
		1589	sub rename {
		1590	my ($self, $new_path) = @_;
		1591
		1592	$self->unlink_save;
		1593
		1594	delete $cf::MAP{$self->path};
		1595	$self->{path} = new cf::path $new_path;
		1596	$self->path ($self->{path}->as_string);
		1597	$cf::MAP{$self->path} = $self;
		1598
		1599	$self->save;
		1600	}
		1601
		1602	sub reset {
		1603	my ($self) = @_;
		1604
		1605	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1606
		1607	return if $self->players;
		1608	return if $self->{path}{user_rel};#d#
		1609
		1610	warn "resetting map ", $self->path;#d#
		1611
		1612	delete $cf::MAP{$self->path};
		1613
		1614	$_->clear_links_to ($self) for values %cf::MAP;
		1615
		1616	$self->unlink_save;
		1617	$self->destroy;
		1618	}
		1619
		1620	my $nuke_counter = "aaaa";
		1621
		1622	sub nuke {
		1623	my ($self) = @_;
		1624
		1625	$self->{deny_save} = 1;
		1626	$self->reset_timeout (1);
		1627	$self->rename ("{nuke}/" . ($nuke_counter++));
		1628	$self->reset; # polite request, might not happen
		1629	}
		1630
		1631	sub customise_for {
		1632	my ($map, $ob) = @_;
		1633
		1634	if ($map->per_player) {
		1635	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1636	}
		1637
		1638	$map
		1639	}
		1640
		1641	=item cf::map::unique_maps
		1642
		1643	Returns an arrayref of cf::path's of all shared maps that have
		1644	instantiated unique items. May block.
		1645
		1646	=cut
		1647
		1648	sub unique_maps() {
		1649	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1650	or return;
		1651
		1652	my @paths;
		1653
		1654	for (@$files) {
		1655	utf8::decode $_;
		1656	next if /\.pst$/;
		1657	next unless /^$PATH_SEP/o;
		1658
		1659	push @paths, new cf::path $_;
		1660	}
		1661
		1662	\@paths
		1663	}
		1664
		1665	package cf;
		1666
		1667	=back
		1668
		1669	=head3 cf::object
		1670
		1671	=cut
		1672
		1673	package cf::object;
757		1674
758	=over 4	1675	=over 4
759		1676
760	=item cf::player::exists $login	1677	=item $ob->inv_recursive
761		1678
762	Returns true when the given account exists.	1679	Returns the inventory of the object _and_ their inventories, recursively.
763		1680
764	=cut	1681	=cut
765		1682
766	sub cf::player::exists($) {	1683	sub inv_recursive_;
767	cf::player::find $_[0]	1684	sub inv_recursive_ {
768	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1685	map { $_, inv_recursive_ $_->inv } @_
769	}	1686	}
770		1687
		1688	sub inv_recursive {
		1689	inv_recursive_ inv $_[0]
		1690	}
		1691
		1692	package cf;
		1693
		1694	=back
		1695
		1696	=head3 cf::object::player
		1697
		1698	=over 4
		1699
771	=item $player->reply ($npc, $msg[, $flags])	1700	=item $player_object->reply ($npc, $msg[, $flags])
772		1701
773	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1702	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
774	can be C<undef>. Does the right thing when the player is currently in a	1703	can be C<undef>. Does the right thing when the player is currently in a
775	dialogue with the given NPC character.	1704	dialogue with the given NPC character.
776		1705
777	=cut	1706	=cut
778		1707
779	# rough implementation of a future "reply" method that works	1708	# rough implementation of a future "reply" method that works
780	# with dialog boxes.	1709	# with dialog boxes.
		1710	#TODO: the first argument must go, split into a $npc->reply_to ( method
781	sub cf::object::player::reply($$$;$) {	1711	sub cf::object::player::reply($$$;$) {
782	my ($self, $npc, $msg, $flags) = @_;	1712	my ($self, $npc, $msg, $flags) = @_;
783		1713
784	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1714	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
785		1715
…		…
789	$msg = $npc->name . " says: $msg" if $npc;	1719	$msg = $npc->name . " says: $msg" if $npc;
790	$self->message ($msg, $flags);	1720	$self->message ($msg, $flags);
791	}	1721	}
792	}	1722	}
793		1723
794	=item $player->ext_reply ($msgid, $msgtype, %msg)	1724	=item $player_object->may ("access")
795		1725
796	Sends an ext reply to the player.	1726	Returns wether the given player is authorized to access resource "access"
		1727	(e.g. "command_wizcast").
797		1728
798	=cut	1729	=cut
799		1730
800	sub cf::player::ext_reply($$$%) {	1731	sub cf::object::player::may {
		1732	my ($self, $access) = @_;
		1733
		1734	$self->flag (cf::FLAG_WIZ) ||
		1735	(ref $cf::CFG{"may_$access"}
		1736	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1737	: $cf::CFG{"may_$access"})
		1738	}
		1739
		1740	=item $player_object->enter_link
		1741
		1742	Freezes the player and moves him/her to a special map (C<{link}>).
		1743
		1744	The player should be reaosnably safe there for short amounts of time. You
		1745	I<MUST> call C<leave_link> as soon as possible, though.
		1746
		1747	=item $player_object->leave_link ($map, $x, $y)
		1748
		1749	Moves the player out of the specila link map onto the given map. If the
		1750	map is not valid (or omitted), the player will be moved back to the
		1751	location he/she was before the call to C<enter_link>, or, if that fails,
		1752	to the emergency map position.
		1753
		1754	Might block.
		1755
		1756	=cut
		1757
		1758	sub cf::object::player::enter_link {
		1759	my ($self) = @_;
		1760
		1761	$self->deactivate_recursive;
		1762
		1763	return if $self->map == $LINK_MAP;
		1764
		1765	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1766	if $self->map;
		1767
		1768	$self->enter_map ($LINK_MAP, 20, 20);
		1769	}
		1770
		1771	sub cf::object::player::leave_link {
		1772	my ($self, $map, $x, $y) = @_;
		1773
		1774	my $link_pos = delete $self->{_link_pos};
		1775
		1776	unless ($map) {
		1777	# restore original map position
		1778	($map, $x, $y) = @{ $link_pos || [] };
		1779	$map = cf::map::find $map;
		1780
		1781	unless ($map) {
		1782	($map, $x, $y) = @$EMERGENCY_POSITION;
		1783	$map = cf::map::find $map
		1784	or die "FATAL: cannot load emergency map\n";
		1785	}
		1786	}
		1787
		1788	($x, $y) = (-1, -1)
		1789	unless (defined $x) && (defined $y);
		1790
		1791	# use -1 or undef as default coordinates, not 0, 0
		1792	($x, $y) = ($map->enter_x, $map->enter_y)
		1793	if $x <=0 && $y <= 0;
		1794
		1795	$map->load;
		1796	$map->load_diag;
		1797
		1798	return unless $self->contr->active;
		1799	$self->activate_recursive;
		1800	$self->enter_map ($map, $x, $y);
		1801	}
		1802
		1803	cf::player->attach (
		1804	on_logout => sub {
		1805	my ($pl) = @_;
		1806
		1807	# abort map switching before logout
		1808	if ($pl->ob->{_link_pos}) {
		1809	cf::sync_job {
		1810	$pl->ob->leave_link
		1811	};
		1812	}
		1813	},
		1814	on_login => sub {
		1815	my ($pl) = @_;
		1816
		1817	# try to abort aborted map switching on player login :)
		1818	# should happen only on crashes
		1819	if ($pl->ob->{_link_pos}) {
		1820	$pl->ob->enter_link;
		1821	(async {
		1822	# we need this sleep as the login has a concurrent enter_exit running
		1823	# and this sleep increases chances of the player not ending up in scorn
		1824	$pl->ob->reply (undef,
		1825	"There was an internal problem at your last logout, "
		1826	. "the server will try to bring you to your intended destination in a second.",
		1827	cf::NDI_RED);
		1828	Coro::Timer::sleep 1;
		1829	$pl->ob->leave_link;
		1830	})->prio (2);
		1831	}
		1832	},
		1833	);
		1834
		1835	=item $player_object->goto ($path, $x, $y)
		1836
		1837	=cut
		1838
		1839	sub cf::object::player::goto {
		1840	my ($self, $path, $x, $y) = @_;
		1841
		1842	$path = new cf::path $path;
		1843
		1844	$self->enter_link;
		1845
		1846	(async {
		1847	my $map = cf::map::find $path->as_string;
		1848	$map = $map->customise_for ($self) if $map;
		1849
		1850	# warn "entering ", $map->path, " at ($x, $y)\n"
		1851	# if $map;
		1852
		1853	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1854
		1855	$self->leave_link ($map, $x, $y);
		1856	})->prio (1);
		1857	}
		1858
		1859	=item $player_object->enter_exit ($exit_object)
		1860
		1861	=cut
		1862
		1863	sub parse_random_map_params {
		1864	my ($spec) = @_;
		1865
		1866	my $rmp = { # defaults
		1867	xsize => 10,
		1868	ysize => 10,
		1869	};
		1870
		1871	for (split /\n/, $spec) {
		1872	my ($k, $v) = split /\s+/, $_, 2;
		1873
		1874	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1875	}
		1876
		1877	$rmp
		1878	}
		1879
		1880	sub prepare_random_map {
		1881	my ($exit) = @_;
		1882
		1883	# all this does is basically replace the /! path by
		1884	# a new random map path (?random/...) with a seed
		1885	# that depends on the exit object
		1886
		1887	my $rmp = parse_random_map_params $exit->msg;
		1888
		1889	if ($exit->map) {
		1890	$rmp->{region} = $exit->map->region_name;
		1891	$rmp->{origin_map} = $exit->map->path;
		1892	$rmp->{origin_x} = $exit->x;
		1893	$rmp->{origin_y} = $exit->y;
		1894	}
		1895
		1896	$rmp->{random_seed} ||= $exit->random_seed;
		1897
		1898	my $data = cf::to_json $rmp;
		1899	my $md5 = Digest::MD5::md5_hex $data;
		1900
		1901	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1902	aio_write $fh, 0, (length $data), $data, 0;
		1903
		1904	$exit->slaying ("?random/$md5");
		1905	$exit->msg (undef);
		1906	}
		1907	}
		1908
		1909	sub cf::object::player::enter_exit {
801	my ($self, $id, %msg) = @_;	1910	my ($self, $exit) = @_;
802		1911
803	$msg{msgid} = $id;	1912	return unless $self->type == cf::PLAYER;
804		1913
805	$self->send ("ext " . to_json \%msg);	1914	$self->enter_link;
		1915
		1916	(async {
		1917	$self->deactivate_recursive; # just to be sure
		1918	unless (eval {
		1919	prepare_random_map $exit
		1920	if $exit->slaying eq "/!";
		1921
		1922	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1923	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1924
		1925	1;
		1926	}) {
		1927	$self->message ("Something went wrong deep within the crossfire server. "
		1928	. "I'll try to bring you back to the map you were before. "
		1929	. "Please report this to the dungeon master!",
		1930	cf::NDI_UNIQUE | cf::NDI_RED);
		1931
		1932	warn "ERROR in enter_exit: $@";
		1933	$self->leave_link;
		1934	}
		1935	})->prio (1);
806	}	1936	}
		1937
		1938	=head3 cf::client
		1939
		1940	=over 4
		1941
		1942	=item $client->send_drawinfo ($text, $flags)
		1943
		1944	Sends a drawinfo packet to the client. Circumvents output buffering so
		1945	should not be used under normal circumstances.
		1946
		1947	=cut
		1948
		1949	sub cf::client::send_drawinfo {
		1950	my ($self, $text, $flags) = @_;
		1951
		1952	utf8::encode $text;
		1953	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1954	}
		1955
		1956
		1957	=item $success = $client->query ($flags, "text", \&cb)
		1958
		1959	Queues a query to the client, calling the given callback with
		1960	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1961	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1962
		1963	Queries can fail, so check the return code. Or don't, as queries will become
		1964	reliable at some point in the future.
		1965
		1966	=cut
		1967
		1968	sub cf::client::query {
		1969	my ($self, $flags, $text, $cb) = @_;
		1970
		1971	return unless $self->state == ST_PLAYING
		1972	|| $self->state == ST_SETUP
		1973	|| $self->state == ST_CUSTOM;
		1974
		1975	$self->state (ST_CUSTOM);
		1976
		1977	utf8::encode $text;
		1978	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1979
		1980	$self->send_packet ($self->{query_queue}[0][0])
		1981	if @{ $self->{query_queue} } == 1;
		1982	}
		1983
		1984	cf::client->attach (
		1985	on_reply => sub {
		1986	my ($ns, $msg) = @_;
		1987
		1988	# this weird shuffling is so that direct followup queries
		1989	# get handled first
		1990	my $queue = delete $ns->{query_queue}
		1991	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1992
		1993	(shift @$queue)->[1]->($msg);
		1994
		1995	push @{ $ns->{query_queue} }, @$queue;
		1996
		1997	if (@{ $ns->{query_queue} } == @$queue) {
		1998	if (@$queue) {
		1999	$ns->send_packet ($ns->{query_queue}[0][0]);
		2000	} else {
		2001	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2002	}
		2003	}
		2004	},
		2005	);
		2006
		2007	=item $client->async (\&cb)
		2008
		2009	Create a new coroutine, running the specified callback. The coroutine will
		2010	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2011	or loss of connection).
		2012
		2013	=cut
		2014
		2015	sub cf::client::async {
		2016	my ($self, $cb) = @_;
		2017
		2018	my $coro = &Coro::async ($cb);
		2019
		2020	$coro->on_destroy (sub {
		2021	delete $self->{_coro}{$coro+0};
		2022	});
		2023
		2024	$self->{_coro}{$coro+0} = $coro;
		2025
		2026	$coro
		2027	}
		2028
		2029	cf::client->attach (
		2030	on_destroy => sub {
		2031	my ($ns) = @_;
		2032
		2033	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2034	},
		2035	);
807		2036
808	=back	2037	=back
809		2038
810	=cut
811
812	#############################################################################
813		2039
814	=head2 SAFE SCRIPTING	2040	=head2 SAFE SCRIPTING
815		2041
816	Functions that provide a safe environment to compile and execute	2042	Functions that provide a safe environment to compile and execute
817	snippets of perl code without them endangering the safety of the server	2043	snippets of perl code without them endangering the safety of the server
818	itself. Looping constructs, I/O operators and other built-in functionality	2044	itself. Looping constructs, I/O operators and other built-in functionality
819	is not available in the safe scripting environment, and the number of	2045	is not available in the safe scripting environment, and the number of
820	functions and methods that cna be called is greatly reduced.	2046	functions and methods that can be called is greatly reduced.
821		2047
822	=cut	2048	=cut
823		2049
824	our $safe = new Safe "safe";	2050	our $safe = new Safe "safe";
825	our $safe_hole = new Safe::Hole;	2051	our $safe_hole = new Safe::Hole;
…		…
832		2058
833	=pod	2059	=pod
834		2060
835	The following fucntions and emthods are available within a safe environment:	2061	The following fucntions and emthods are available within a safe environment:
836		2062
837	cf::object contr pay_amount pay_player	2063	cf::object contr pay_amount pay_player map
838	cf::object::player player	2064	cf::object::player player
839	cf::player peaceful	2065	cf::player peaceful
		2066	cf::map trigger
840		2067
841	=cut	2068	=cut
842		2069
843	for (	2070	for (
844	["cf::object" => qw(contr pay_amount pay_player)],	2071	["cf::object" => qw(contr pay_amount pay_player map)],
845	["cf::object::player" => qw(player)],	2072	["cf::object::player" => qw(player)],
846	["cf::player" => qw(peaceful)],	2073	["cf::player" => qw(peaceful)],
		2074	["cf::map" => qw(trigger)],
847	) {	2075	) {
848	no strict 'refs';	2076	no strict 'refs';
849	my ($pkg, @funs) = @$_;	2077	my ($pkg, @funs) = @$_;
850	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2078	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
851	for @funs;	2079	for @funs;
…		…
961		2189
962	Immediately write the database to disk I<if it is dirty>.	2190	Immediately write the database to disk I<if it is dirty>.
963		2191
964	=cut	2192	=cut
965		2193
		2194	our $DB;
		2195
966	{	2196	{
967	my $db;
968	my $path = cf::localdir . "/database.pst";	2197	my $path = cf::localdir . "/database.pst";
969		2198
970	sub db_load() {	2199	sub db_load() {
971	warn "loading database $path\n";#d# remove later
972	$db = stat $path ? Storable::retrieve $path : { };	2200	$DB = stat $path ? Storable::retrieve $path : { };
973	}	2201	}
974		2202
975	my $pid;	2203	my $pid;
976		2204
977	sub db_save() {	2205	sub db_save() {
978	warn "saving database $path\n";#d# remove later
979	waitpid $pid, 0 if $pid;	2206	waitpid $pid, 0 if $pid;
980	if (0 == ($pid = fork)) {	2207	if (0 == ($pid = fork)) {
981	$db->{_meta}{version} = 1;	2208	$DB->{_meta}{version} = 1;
982	Storable::nstore $db, "$path~";	2209	Storable::nstore $DB, "$path~";
983	rename "$path~", $path;	2210	rename "$path~", $path;
984	cf::_exit 0 if defined $pid;	2211	cf::_exit 0 if defined $pid;
985	}	2212	}
986	}	2213	}
987		2214
…		…
990	sub db_sync() {	2217	sub db_sync() {
991	db_save if $dirty;	2218	db_save if $dirty;
992	undef $dirty;	2219	undef $dirty;
993	}	2220	}
994		2221
995	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2222	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
996	db_sync;	2223	db_sync;
997	});	2224	});
998		2225
999	sub db_dirty() {	2226	sub db_dirty() {
1000	$dirty = 1;	2227	$dirty = 1;
1001	$idle->start;	2228	$idle->start;
1002	}	2229	}
1003		2230
1004	sub db_get($;$) {	2231	sub db_get($;$) {
1005	@_ >= 2	2232	@_ >= 2
1006	? $db->{$_[0]}{$_[1]}	2233	? $DB->{$_[0]}{$_[1]}
1007	: ($db->{$_[0]} ||= { })	2234	: ($DB->{$_[0]} ||= { })
1008	}	2235	}
1009		2236
1010	sub db_put($$;$) {	2237	sub db_put($$;$) {
1011	if (@_ >= 3) {	2238	if (@_ >= 3) {
1012	$db->{$_[0]}{$_[1]} = $_[2];	2239	$DB->{$_[0]}{$_[1]} = $_[2];
1013	} else {	2240	} else {
1014	$db->{$_[0]} = $_[1];	2241	$DB->{$_[0]} = $_[1];
1015	}	2242	}
1016	db_dirty;	2243	db_dirty;
1017	}	2244	}
1018		2245
1019	attach_global	2246	cf::global->attach (
1020	prio => 10000,	2247	prio => 10000,
1021	on_cleanup => sub {	2248	on_cleanup => sub {
1022	db_sync;	2249	db_sync;
1023	},	2250	},
1024	;	2251	);
1025	}	2252	}
1026		2253
1027	#############################################################################	2254	#############################################################################
1028	# the server's main()	2255	# the server's main()
1029		2256
		2257	sub cfg_load {
		2258	open my $fh, "<:utf8", cf::confdir . "/config"
		2259	or return;
		2260
		2261	local $/;
		2262	*CFG = YAML::Syck::Load <$fh>;
		2263
		2264	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2265
		2266	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2267	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2268
		2269	if (exists $CFG{mlockall}) {
		2270	eval {
		2271	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2272	and die "WARNING: m(un)lockall failed: $!\n";
		2273	};
		2274	warn $@ if $@;
		2275	}
		2276	}
		2277
1030	sub main {	2278	sub main {
		2279	# we must not ever block the main coroutine
		2280	local $Coro::idle = sub {
		2281	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2282	async { Event::one_event };
		2283	};
		2284
		2285	cfg_load;
1031	db_load;	2286	db_load;
1032	load_extensions;	2287	load_extensions;
1033	Event::loop;	2288	Event::loop;
1034	}	2289	}
1035		2290
1036	#############################################################################	2291	#############################################################################
1037	# initialisation	2292	# initialisation and cleanup
1038		2293
		2294	# install some emergency cleanup handlers
		2295	BEGIN {
		2296	for my $signal (qw(INT HUP TERM)) {
		2297	Event->signal (
		2298	data => WF_AUTOCANCEL,
		2299	signal => $signal,
		2300	cb => sub {
		2301	cf::cleanup "SIG$signal";
		2302	},
		2303	);
		2304	}
		2305	}
		2306
		2307	sub emergency_save() {
		2308	my $freeze_guard = cf::freeze_mainloop;
		2309
		2310	warn "enter emergency perl save\n";
		2311
		2312	cf::sync_job {
		2313	# use a peculiar iteration method to avoid tripping on perl
		2314	# refcount bugs in for. also avoids problems with players
		2315	# and maps saved/Destroyed asynchronously.
		2316	warn "begin emergency player save\n";
		2317	for my $login (keys %cf::PLAYER) {
		2318	my $pl = $cf::PLAYER{$login} or next;
		2319	$pl->valid or next;
		2320	$pl->save;
		2321	}
		2322	warn "end emergency player save\n";
		2323
		2324	warn "begin emergency map save\n";
		2325	for my $path (keys %cf::MAP) {
		2326	my $map = $cf::MAP{$path} or next;
		2327	$map->valid or next;
		2328	$map->save;
		2329	}
		2330	warn "end emergency map save\n";
		2331	};
		2332
		2333	warn "leave emergency perl save\n";
		2334	}
		2335
1039	sub _perl_reload(&) {	2336	sub reload() {
1040	my ($msg) = @_;	2337	# can/must only be called in main
		2338	if ($Coro::current != $Coro::main) {
		2339	warn "can only reload from main coroutine\n";
		2340	return;
		2341	}
1041		2342
1042	$msg->("reloading...");	2343	warn "reloading...";
		2344
		2345	my $guard = freeze_mainloop;
		2346	cf::emergency_save;
1043		2347
1044	eval {	2348	eval {
		2349	# if anything goes wrong in here, we should simply crash as we already saved
		2350
1045	# cancel all watchers	2351	# cancel all watchers
1046	$_->cancel for Event::all_watchers;	2352	for (Event::all_watchers) {
		2353	$_->cancel if $_->data & WF_AUTOCANCEL;
		2354	}
		2355
		2356	# cancel all extension coros
		2357	$_->cancel for values %EXT_CORO;
		2358	%EXT_CORO = ();
1047		2359
1048	# unload all extensions	2360	# unload all extensions
1049	for (@exts) {	2361	for (@exts) {
1050	$msg->("unloading <$_>");	2362	warn "unloading <$_>";
1051	unload_extension $_;	2363	unload_extension $_;
1052	}	2364	}
1053		2365
1054	# unload all modules loaded from $LIBDIR	2366	# unload all modules loaded from $LIBDIR
1055	while (my ($k, $v) = each %INC) {	2367	while (my ($k, $v) = each %INC) {
1056	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2368	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1057		2369
1058	$msg->("removing <$k>");	2370	warn "removing <$k>";
1059	delete $INC{$k};	2371	delete $INC{$k};
1060		2372
1061	$k =~ s/\.pm$//;	2373	$k =~ s/\.pm$//;
1062	$k =~ s/\//::/g;	2374	$k =~ s/\//::/g;
1063		2375
…		…
1068	Symbol::delete_package $k;	2380	Symbol::delete_package $k;
1069	}	2381	}
1070		2382
1071	# sync database to disk	2383	# sync database to disk
1072	cf::db_sync;	2384	cf::db_sync;
		2385	IO::AIO::flush;
1073		2386
1074	# get rid of safe::, as good as possible	2387	# get rid of safe::, as good as possible
1075	Symbol::delete_package "safe::$_"	2388	Symbol::delete_package "safe::$_"
1076	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2389	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1077		2390
1078	# remove register_script_function callbacks	2391	# remove register_script_function callbacks
1079	# TODO	2392	# TODO
1080		2393
1081	# unload cf.pm "a bit"	2394	# unload cf.pm "a bit"
…		…
1084	# don't, removes xs symbols, too,	2397	# don't, removes xs symbols, too,
1085	# and global variables created in xs	2398	# and global variables created in xs
1086	#Symbol::delete_package __PACKAGE__;	2399	#Symbol::delete_package __PACKAGE__;
1087		2400
1088	# reload cf.pm	2401	# reload cf.pm
1089	$msg->("reloading cf.pm");	2402	warn "reloading cf.pm";
1090	require cf;	2403	require cf;
		2404	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1091		2405
1092	# load database again	2406	# load config and database again
		2407	cf::cfg_load;
1093	cf::db_load;	2408	cf::db_load;
1094		2409
1095	# load extensions	2410	# load extensions
1096	$msg->("load extensions");	2411	warn "load extensions";
1097	cf::load_extensions;	2412	cf::load_extensions;
1098		2413
1099	# reattach attachments to objects	2414	# reattach attachments to objects
1100	$msg->("reattach");	2415	warn "reattach";
1101	_global_reattach;	2416	_global_reattach;
		2417	reattach $_ for values %MAP;
1102	};	2418	};
1103	$msg->($@) if $@;
1104		2419
1105	$msg->("reloaded");	2420	if ($@) {
		2421	warn $@;
		2422	warn "error while reloading, exiting.";
		2423	exit 1;
		2424	}
		2425
		2426	warn "reloaded successfully";
1106	};	2427	};
1107		2428
1108	sub perl_reload() {	2429	#############################################################################
1109	_perl_reload {
1110	warn $_[0];
1111	print "$_[0]\n";
1112	};
1113	}
1114		2430
		2431	unless ($LINK_MAP) {
		2432	$LINK_MAP = cf::map::new;
		2433
		2434	$LINK_MAP->width (41);
		2435	$LINK_MAP->height (41);
		2436	$LINK_MAP->alloc;
		2437	$LINK_MAP->path ("{link}");
		2438	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2439	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2440
		2441	# dirty hack because... archetypes are not yet loaded
		2442	Event->timer (
		2443	after => 10,
		2444	cb => sub {
		2445	$_[0]->w->cancel;
		2446
		2447	# provide some exits "home"
		2448	my $exit = cf::object::new "exit";
		2449
		2450	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2451	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2452	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2453
		2454	$LINK_MAP->insert ($exit->clone, 19, 19);
		2455	$LINK_MAP->insert ($exit->clone, 19, 20);
		2456	$LINK_MAP->insert ($exit->clone, 19, 21);
		2457	$LINK_MAP->insert ($exit->clone, 20, 19);
		2458	$LINK_MAP->insert ($exit->clone, 20, 21);
		2459	$LINK_MAP->insert ($exit->clone, 21, 19);
		2460	$LINK_MAP->insert ($exit->clone, 21, 20);
		2461	$LINK_MAP->insert ($exit->clone, 21, 21);
		2462
		2463	$exit->destroy;
		2464	});
		2465
		2466	$LINK_MAP->{deny_save} = 1;
		2467	$LINK_MAP->{deny_reset} = 1;
		2468
		2469	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2470	}
		2471
		2472	register "<global>", __PACKAGE__;
		2473
1115	register_command "perl-reload", 0, sub {	2474	register_command "reload" => sub {
1116	my ($who, $arg) = @_;	2475	my ($who, $arg) = @_;
1117		2476
1118	if ($who->flag (FLAG_WIZ)) {	2477	if ($who->flag (FLAG_WIZ)) {
1119	_perl_reload {	2478	$who->message ("start of reload.");
1120	warn $_[0];	2479	reload;
1121	$who->message ($_[0]);	2480	$who->message ("end of reload.");
1122	};
1123	}	2481	}
1124	};	2482	};
1125		2483
1126	register "<global>", __PACKAGE__;
1127
1128	unshift @INC, $LIBDIR;	2484	unshift @INC, $LIBDIR;
1129		2485
1130	$TICK_WATCHER = Event->timer (	2486	$TICK_WATCHER = Event->timer (
		2487	reentrant => 0,
1131	prio => 1,	2488	prio => 0,
1132	at => $NEXT_TICK || 1,	2489	at => $NEXT_TICK || $TICK,
		2490	data => WF_AUTOCANCEL,
1133	cb => sub {	2491	cb => sub {
1134	cf::server_tick; # one server iteration	2492	cf::server_tick; # one server iteration
1135		2493	$RUNTIME += $TICK;
1136	my $NOW = Event::time;
1137	$NEXT_TICK += $TICK;	2494	$NEXT_TICK += $TICK;
1138		2495
		2496	$WAIT_FOR_TICK->broadcast;
		2497	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2498
1139	# if we are delayed by four ticks, skip them all	2499	# if we are delayed by four ticks or more, skip them all
1140	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2500	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1141		2501
1142	$TICK_WATCHER->at ($NEXT_TICK);	2502	$TICK_WATCHER->at ($NEXT_TICK);
1143	$TICK_WATCHER->start;	2503	$TICK_WATCHER->start;
1144	},	2504	},
1145	);	2505	);
1146		2506
		2507	IO::AIO::max_poll_time $TICK * 0.2;
		2508
		2509	Event->io (
		2510	fd => IO::AIO::poll_fileno,
		2511	poll => 'r',
		2512	prio => 5,
		2513	data => WF_AUTOCANCEL,
		2514	cb => \&IO::AIO::poll_cb,
		2515	);
		2516
		2517	Event->timer (
		2518	data => WF_AUTOCANCEL,
		2519	after => 0,
		2520	interval => 10,
		2521	cb => sub {
		2522	(Coro::unblock_sub {
		2523	write_runtime
		2524	or warn "ERROR: unable to write runtime file: $!";
		2525	})->();
		2526	},
		2527	);
		2528
		2529	END { cf::emergency_save }
		2530
1147	1	2531	1
1148		2532

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