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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.53 by root, Tue Aug 29 13:11:58 2006 UTC vs.
Revision 1.184 by root, Fri Jan 19 22:47:57 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 3.4 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
		23	use IO::AIO 2.32 ();
		24	use YAML::Syck ();
10	use Time::HiRes;	25	use Time::HiRes;
11	use Event;	26
12	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		28
14	use strict;	29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	_reload_1;	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
17		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
18	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
19	our @EVENT;	44	our @EVENT;
20	our %PROP_TYPE;	45	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		46
24	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
26	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
		53
		54	our %CFG;
		55
		56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
		58
		59	our %PLAYER; # all users
		60	our %MAP; # all maps
		61	our $LINK_MAP; # the special {link} map, which is always available
		62	our $RANDOM_MAPS = cf::localdir . "/random";
		63
		64	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		65	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		66
		67	# used to convert map paths into valid unix filenames by replacing / by ∕
		68	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		69
		70	binmode STDOUT;
		71	binmode STDERR;
		72
		73	# read virtual server time, if available
		74	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		75	open my $fh, "<", cf::localdir . "/runtime"
		76	or die "unable to read runtime file: $!";
		77	$RUNTIME = <$fh> + 0.;
		78	}
		79
		80	mkdir cf::localdir;
		81	mkdir cf::localdir . "/" . cf::playerdir;
		82	mkdir cf::localdir . "/" . cf::tmpdir;
		83	mkdir cf::localdir . "/" . cf::uniquedir;
		84	mkdir $RANDOM_MAPS;
		85
		86	our $EMERGENCY_POSITION;
		87
		88	#############################################################################
		89
		90	=head2 GLOBAL VARIABLES
		91
		92	=over 4
		93
		94	=item $cf::UPTIME
		95
		96	The timestamp of the server start (so not actually an uptime).
		97
		98	=item $cf::RUNTIME
		99
		100	The time this server has run, starts at 0 and is increased by $cf::TICK on
		101	every server tick.
		102
		103	=item $cf::LIBDIR
		104
		105	The perl library directory, where extensions and cf-specific modules can
		106	be found. It will be added to C<@INC> automatically.
		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
		112	=item $cf::TICK
		113
		114	The interval between server ticks, in seconds.
		115
		116	=item %cf::CFG
		117
		118	Configuration for the server, loaded from C</etc/crossfire/config>, or
		119	from wherever your confdir points to.
		120
		121	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		122
		123	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		124	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		125	processing has been done. Call C<< ->wait >> on them to maximise the
		126	window of cpu time available, or simply to synchronise to the server tick.
		127
		128	=back
		129
		130	=cut
27		131
28	BEGIN {	132	BEGIN {
29	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
31	$msg .= "\n"	137	$msg .= "\n"
32	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
33		139
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
36	};	141	};
37	}	142	}
38		143
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	148	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		150
75	# we bless all objects into (empty) derived classes to force a method lookup	151	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	152	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
78	no strict 'refs';	160	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	162	}
81		163
82	$Event::DIED = sub {	164	$Event::DIED = sub {
83	warn "error in event callback: @_";	165	warn "error in event callback: @_";
84	};	166	};
85		167
86	my %ext_pkg;	168	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		169
92	#############################################################################	170	=over 4
93	# utility functions	171
		172	=item dumpval $ref
		173
		174	=cut
		175
		176	sub dumpval {
		177	eval {
		178	local $SIG{__DIE__};
		179	my $d;
		180	if (1) {
		181	$d = new Data::Dumper([$_[0]], ["*var"]);
		182	$d->Terse(1);
		183	$d->Indent(2);
		184	$d->Quotekeys(0);
		185	$d->Useqq(1);
		186	#$d->Bless(...);
		187	$d->Seen($_[1]) if @_ > 1;
		188	$d = $d->Dump();
		189	}
		190	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		191	$d
		192	} || "[unable to dump $_[0]: '$@']";
		193	}
94		194
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
		196
		197	=item $ref = cf::from_json $json
		198
		199	Converts a JSON string into the corresponding perl data structure.
		200
		201	=cut
96		202
97	sub from_json($) {	203	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	204	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	205	JSON::Syck::Load $_[0]
100	}	206	}
101		207
		208	=item $json = cf::to_json $ref
		209
		210	Converts a perl data structure into its JSON representation.
		211
		212	=cut
		213
102	sub to_json($) {	214	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
105	}	217	}
106		218
		219	=item cf::lock_wait $string
		220
		221	Wait until the given lock is available. See cf::lock_acquire.
		222
		223	=item my $lock = cf::lock_acquire $string
		224
		225	Wait until the given lock is available and then acquires it and returns
		226	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		227	for example when the coroutine gets canceled), the lock is automatically
		228	returned.
		229
		230	Lock names should begin with a unique identifier (for example, cf::map::find
		231	uses map_find and cf::map::load uses map_load).
		232
		233	=cut
		234
		235	our %LOCK;
		236
		237	sub lock_wait($) {
		238	my ($key) = @_;
		239
		240	# wait for lock, if any
		241	while ($LOCK{$key}) {
		242	push @{ $LOCK{$key} }, $Coro::current;
		243	Coro::schedule;
		244	}
		245	}
		246
		247	sub lock_acquire($) {
		248	my ($key) = @_;
		249
		250	# wait, to be sure we are not locked
		251	lock_wait $key;
		252
		253	$LOCK{$key} = [];
		254
		255	Coro::guard {
		256	# wake up all waiters, to be on the safe side
		257	$_->ready for @{ delete $LOCK{$key} };
		258	}
		259	}
		260
		261	sub freeze_mainloop {
		262	return unless $TICK_WATCHER->is_active;
		263
		264	my $guard = Coro::guard {
		265	$TICK_WATCHER->start;
		266	$WRITE_RUNTIME_WATCHER->start;
		267	};
		268	$WRITE_RUNTIME_WATCHER->stop;
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $runtime = cf::localdir . "/runtime";
		350
		351	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		352	or return;
		353
		354	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		355	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		356	and return;
		357
		358	aio_fsync $fh
		359	and return;
		360
		361	close $fh
		362	or return;
		363
		364	aio_rename "$runtime~", $runtime
		365	and return;
		366
		367	1
		368	}
		369
		370	=back
		371
		372	=cut
		373
107	#############################################################################	374	#############################################################################
108	# "new" plug-in system
109		375
110	=item $object->attach ($attachment, key => $value...)	376	=head2 ATTACHABLE OBJECTS
111		377
112	=item $object->detach ($attachment)	378	Many objects in crossfire are so-called attachable objects. That means you can
		379	attach callbacks/event handlers (a collection of which is called an "attachment")
		380	to it. All such attachable objects support the following methods.
113		381
114	Attach/detach a pre-registered attachment to an object.	382	In the following description, CLASS can be any of C<global>, C<object>
		383	C<player>, C<client> or C<map> (i.e. the attachable objects in
		384	crossfire+).
115		385
116	=item $player->attach ($attachment, key => $value...)	386	=over 4
117		387
118	=item $player->detach ($attachment)
119
120	Attach/detach a pre-registered attachment to a player.
121
122	=item $map->attach ($attachment, key => $value...)	388	=item $attachable->attach ($attachment, key => $value...)
123		389
124	=item $map->detach ($attachment)	390	=item $attachable->detach ($attachment)
125		391
126	Attach/detach a pre-registered attachment to a map.	392	Attach/detach a pre-registered attachment to a specific object and give it
		393	the specified key/value pairs as arguments.
127		394
128	=item cf::attach_global ...	395	Example, attach a minesweeper attachment to the given object, making it a
		396	10x10 minesweeper game:
129		397
130	Attach handlers for global events.	398	$obj->attach (minesweeper => width => 10, height => 10);
131		399
132	This and all following C<attach_*>-functions expect any number of the	400	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	401
		402	Checks wether the named attachment is currently attached to the object.
		403
		404	=item cf::CLASS->attach ...
		405
		406	=item cf::CLASS->detach ...
		407
		408	Define an anonymous attachment and attach it to all objects of the given
		409	CLASS. See the next function for an explanation of its arguments.
		410
		411	You can attach to global events by using the C<cf::global> class.
		412
		413	Example, log all player logins:
		414
		415	cf::player->attach (
		416	on_login => sub {
		417	my ($pl) = @_;
		418	...
		419	},
		420	);
		421
		422	Example, attach to the jeweler skill:
		423
		424	cf::object->attach (
		425	type => cf::SKILL,
		426	subtype => cf::SK_JEWELER,
		427	on_use_skill => sub {
		428	my ($sk, $ob, $part, $dir, $msg) = @_;
		429	...
		430	},
		431	);
		432
		433	=item cf::CLASS::attachment $name, ...
		434
		435	Register an attachment by C<$name> through which attachable objects of the
		436	given CLASS can refer to this attachment.
		437
		438	Some classes such as crossfire maps and objects can specify attachments
		439	that are attached at load/instantiate time, thus the need for a name.
		440
		441	These calls expect any number of the following handler/hook descriptions:
134		442
135	=over 4	443	=over 4
136		444
137	=item prio => $number	445	=item prio => $number
138		446
…		…
140	by another C<prio> setting). Lower priority handlers get executed	448	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	449	earlier. The default priority is C<0>, and many built-in handlers are
142	registered at priority C<-1000>, so lower priorities should not be used	450	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	451	unless you know what you are doing.
144		452
		453	=item type => $type
		454
		455	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		456	given type of objects only (the additional parameter C<subtype> can be
		457	used to further limit to the given subtype).
		458
145	=item on_I<event> => \&cb	459	=item on_I<event> => \&cb
146		460
147	Call the given code reference whenever the named event happens (event is	461	Call the given code reference whenever the named event happens (event is
148	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	462	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
149	handlers are recognised generally depends on the type of object these	463	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	472	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	473	object/class are recognised.
160		474
161	=back	475	=back
162		476
163	=item cf::attach_to_type $object_type, $subtype, ...	477	Example, define an attachment called "sockpuppet" that calls the given
		478	event handler when a monster attacks:
164		479
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	480	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	481	on_skill_attack => sub {
167	type.	482	my ($self, $victim) = @_;
		483	...
		484	}
		485	}
168		486
169	=item cf::attach_to_objects ...	487	=item $attachable->valid
170		488
171	Attach handlers to all objects. Do not use this except for debugging or	489	Just because you have a perl object does not mean that the corresponding
172	very rare events, as handlers are (obviously) called for I<all> objects in	490	C-level object still exists. If you try to access an object that has no
173	the game.	491	valid C counterpart anymore you get an exception at runtime. This method
174		492	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	493	exception.
176
177	Attach handlers to all players.
178
179	=item cf::attach_to_maps ...
180
181	Attach handlers to all maps.
182
183	=item cf:register_attachment $name, ...
184
185	Register an attachment by name through which objects can refer to this
186	attachment.
187
188	=item cf:register_map_attachment $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		494
193	=cut	495	=cut
194		496
195	# the following variables are defined in .xs and must not be re-created	497	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	498	our @CB_GLOBAL = (); # registry for all global events
		499	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	500	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	501	our @CB_PLAYER = ();
		502	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	503	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	504	our @CB_MAP = ();
201		505
202	my %attachment;	506	my %attachment;
203		507
		508	sub cf::attachable::thawer_merge {
		509	# simply override everything except _meta
		510	local $_[0]{_meta};
		511	%{$_[0]} = %{$_[1]};
		512	}
		513
204	sub _attach_cb($\%$$$) {	514	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	515	my ($registry, $event, $prio, $cb) = @_;
206		516
207	use sort 'stable';	517	use sort 'stable';
208		518
209	$cb = [$prio, $cb];	519	$cb = [$prio, $cb];
210		520
211	@{$registry->[$event]} = sort	521	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	522	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	523	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	524	}
		525
		526	# hack
		527	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		528
218	# attach handles attaching event callbacks	529	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	530	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	531	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	532	sub _attach {
222	my ($registry, $klass, @arg) = @_;	533	my ($registry, $klass, @arg) = @_;
223		534
		535	my $object_type;
224	my $prio = 0;	536	my $prio = 0;
225
226	my %undo = (
227	registry => $registry,
228	cb => [],
229	);
230
231	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	537	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		538
		539	#TODO: get rid of this hack
		540	if ($attachable_klass{$klass}) {
		541	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		542	}
232		543
233	while (@arg) {	544	while (@arg) {
234	my $type = shift @arg;	545	my $type = shift @arg;
235		546
236	if ($type eq "prio") {	547	if ($type eq "prio") {
237	$prio = shift @arg;	548	$prio = shift @arg;
238		549
		550	} elsif ($type eq "type") {
		551	$object_type = shift @arg;
		552	$registry = $CB_TYPE[$object_type] ||= [];
		553
		554	} elsif ($type eq "subtype") {
		555	defined $object_type or Carp::croak "subtype specified without type";
		556	my $object_subtype = shift @arg;
		557	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		558
239	} elsif ($type eq "package") {	559	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	560	my $pkg = shift @arg;
241		561
242	while (my ($name, $id) = each %cb_id) {	562	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	563	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	564	_attach_cb $registry, $id, $prio, $cb;
245	}	565	}
246	}	566	}
247		567
248	} elsif (exists $cb_id{$type}) {	568	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	569	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		570
251	} elsif (ref $type) {	571	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	572	warn "attaching objects not supported, ignoring.\n";
253		573
254	} else {	574	} else {
255	shift @arg;	575	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	576	warn "attach argument '$type' not supported, ignoring.\n";
257	}	577	}
258	}	578	}
259
260	\%undo
261	}	579	}
262		580
263	sub _attach_attachment {	581	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	582	my ($obj, $name, %arg) = @_;
265		583
266	my $res;	584	return if exists $obj->{_attachment}{$name};
267		585
268	if (my $attach = $attachment{$name}) {	586	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	587	my $registry = $obj->registry;
270		588
271	for (@$attach) {	589	for (@$attach) {
272	my ($klass, @attach) = @$_;	590	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	591	_attach $registry, $klass, @attach;
274	}	592	}
275		593
276	$obj->{$name} = \%arg;	594	$obj->{$name} = \%arg;
277	} else {	595	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	596	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	597	}
280		598
281	$obj->{_attachment}{$name} = undef;	599	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	600	}
286		601
287	sub cf::object::attach {	602	sub cf::attachable::attach {
288	my ($obj, $name, %arg) = @_;	603	if (ref $_[0]) {
		604	_object_attach @_;
		605	} else {
		606	_attach shift->_attach_registry, @_;
		607	}
		608	};
289		609
290	_attach_attachment $obj, $name, %arg;	610	# all those should be optimised
291	}
292
293	sub cf::player::attach {
294	my ($obj, $name, %arg) = @_;
295
296	_attach_attachment $obj, $name, %arg;
297	}
298
299	sub cf::map::attach {
300	my ($obj, $name, %arg) = @_;
301
302	_attach_attachment $obj, $name, %arg;
303	}
304
305	sub cf::object::detach {	611	sub cf::attachable::detach {
306	my ($obj, $name) = @_;	612	my ($obj, $name) = @_;
307	die;#d#	613
308	}	614	if (ref $obj) {
309	sub cf::player::detach {	615	delete $obj->{_attachment}{$name};
		616	reattach ($obj);
		617	} else {
		618	Carp::croak "cannot, currently, detach class attachments";
		619	}
		620	};
		621
		622	sub cf::attachable::attached {
310	my ($obj, $name) = @_;	623	my ($obj, $name) = @_;
311	die;#d#
312	}
313	sub cf::map::detach {
314	my ($obj, $name) = @_;
315	die;#d#
316	}
317		624
318	sub attach_global {	625	exists $obj->{_attachment}{$name}
319	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
320	}	626	}
321		627
322	sub attach_to_type {	628	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
323	my $type = shift;	629	eval "#line " . __LINE__ . " 'cf.pm'
324	my $subtype = shift;	630	sub cf::\L$klass\E::_attach_registry {
		631	(\\\@CB_$klass, KLASS_$klass)
		632	}
325		633
326	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_	634	sub cf::\L$klass\E::attachment {
327	}
328
329	sub attach_to_objects {
330	_attach @CB_OBJECT, KLASS_OBJECT, @_
331	}
332
333	sub attach_to_players {
334	_attach @CB_PLAYER, KLASS_PLAYER, @_
335	}
336
337	sub attach_to_maps {
338	_attach @CB_MAP, KLASS_MAP, @_
339	}
340
341	sub register_attachment {
342	my $name = shift;	635	my \$name = shift;
343		636
344	$attachment{$name} = [[KLASS_OBJECT, @_]];
345	}
346
347	sub register_map_attachment {
348	my $name = shift;
349
350	$attachment{$name} = [[KLASS_MAP, @_]];	637	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		638	}
		639	";
		640	die if $@;
351	}	641	}
352		642
353	our $override;	643	our $override;
354	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	644	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
355		645
…		…
369	for (@$callbacks) {	659	for (@$callbacks) {
370	eval { &{$_->[1]} };	660	eval { &{$_->[1]} };
371		661
372	if ($@) {	662	if ($@) {
373	warn "$@";	663	warn "$@";
374	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	664	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
375	override;	665	override;
376	}	666	}
377		667
378	return 1 if $override;	668	return 1 if $override;
379	}	669	}
380		670
381	0	671	0
382	}	672	}
		673
		674	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		675
		676	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		677
		678	Generate an object-specific event with the given arguments.
		679
		680	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		681	removed in future versions), and there is no public API to access override
		682	results (if you must, access C<@cf::invoke_results> directly).
		683
		684	=back
		685
		686	=cut
383		687
384	#############################################################################	688	#############################################################################
385	# object support	689	# object support
386		690
387	sub instantiate {
388	my ($obj, $data) = @_;
389
390	$data = from_json $data;
391
392	for (@$data) {
393	my ($name, $args) = @$_;
394
395	$obj->attach ($name, %{$args || {} });
396	}
397	}
398
399	# basically do the same as instantiate, without calling instantiate
400	sub reattach {	691	sub reattach {
		692	# basically do the same as instantiate, without calling instantiate
401	my ($obj) = @_;	693	my ($obj) = @_;
		694
		695	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		696
402	my $registry = $obj->registry;	697	my $registry = $obj->registry;
403		698
404	@$registry = ();	699	@$registry = ();
405		700
406	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	701	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
407		702
408	for my $name (keys %{ $obj->{_attachment} || {} }) {	703	for my $name (keys %{ $obj->{_attachment} || {} }) {
409	if (my $attach = $attachment{$name}) {	704	if (my $attach = $attachment{$name}) {
410	for (@$attach) {	705	for (@$attach) {
411	my ($klass, @attach) = @$_;	706	my ($klass, @attach) = @$_;
412	_attach @$registry, $klass, @attach;	707	_attach $registry, $klass, @attach;
413	}	708	}
414	} else {	709	} else {
415	warn "object uses attachment '$name' that is not available, postponing.\n";	710	warn "object uses attachment '$name' that is not available, postponing.\n";
416	}	711	}
417	}	712	}
418	}	713	}
419		714
420	sub object_freezer_save {	715	cf::attachable->attach (
421	my ($filename, $objs) = @_;
422
423	if (@$objs) {
424	open my $fh, ">:raw", "$filename.pst~";
425	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
426	close $fh;
427	chmod SAVE_MODE, "$filename.pst~";
428	rename "$filename.pst~", "$filename.pst";
429	} else {
430	unlink "$filename.pst";
431	}
432
433	chmod SAVE_MODE, "$filename~";
434	rename "$filename~", $filename;
435	}
436
437	sub object_thawer_load {
438	my ($filename) = @_;
439
440	open my $fh, "<:raw:perlio", "$filename.pst"
441	or return;
442
443	eval { local $/; (Storable::thaw <$fh>)->{objs} }
444	}
445
446	attach_to_objects
447	prio => -1000000,	716	prio => -1000000,
		717	on_instantiate => sub {
		718	my ($obj, $data) = @_;
		719
		720	$data = from_json $data;
		721
		722	for (@$data) {
		723	my ($name, $args) = @$_;
		724
		725	$obj->attach ($name, %{$args || {} });
		726	}
		727	},
		728	on_reattach => \&reattach,
448	on_clone => sub {	729	on_clone => sub {
449	my ($src, $dst) = @_;	730	my ($src, $dst) = @_;
450		731
451	@{$dst->registry} = @{$src->registry};	732	@{$dst->registry} = @{$src->registry};
452		733
453	%$dst = %$src;	734	%$dst = %$src;
454		735
455	%{$dst->{_attachment}} = %{$src->{_attachment}}	736	%{$dst->{_attachment}} = %{$src->{_attachment}}
456	if exists $src->{_attachment};	737	if exists $src->{_attachment};
457	},	738	},
458	;	739	);
		740
		741	sub object_freezer_save {
		742	my ($filename, $rdata, $objs) = @_;
		743
		744	sync_job {
		745	if (length $$rdata) {
		746	warn sprintf "saving %s (%d,%d)\n",
		747	$filename, length $$rdata, scalar @$objs;
		748
		749	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		750	chmod SAVE_MODE, $fh;
		751	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		752	aio_fsync $fh;
		753	close $fh;
		754
		755	if (@$objs) {
		756	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		757	chmod SAVE_MODE, $fh;
		758	my $data = Storable::nfreeze { version => 1, objs => $objs };
		759	aio_write $fh, 0, (length $data), $data, 0;
		760	aio_fsync $fh;
		761	close $fh;
		762	aio_rename "$filename.pst~", "$filename.pst";
		763	}
		764	} else {
		765	aio_unlink "$filename.pst";
		766	}
		767
		768	aio_rename "$filename~", $filename;
		769	} else {
		770	warn "FATAL: $filename~: $!\n";
		771	}
		772	} else {
		773	aio_unlink $filename;
		774	aio_unlink "$filename.pst";
		775	}
		776	}
		777	}
		778
		779	sub object_freezer_as_string {
		780	my ($rdata, $objs) = @_;
		781
		782	use Data::Dumper;
		783
		784	$$rdata . Dumper $objs
		785	}
		786
		787	sub object_thawer_load {
		788	my ($filename) = @_;
		789
		790	my ($data, $av);
		791
		792	(aio_load $filename, $data) >= 0
		793	or return;
		794
		795	unless (aio_stat "$filename.pst") {
		796	(aio_load "$filename.pst", $av) >= 0
		797	or return;
		798	$av = eval { (Storable::thaw $av)->{objs} };
		799	}
		800
		801	warn sprintf "loading %s (%d)\n",
		802	$filename, length $data, scalar @{$av || []};#d#
		803	return ($data, $av);
		804	}
459		805
460	#############################################################################	806	#############################################################################
461	# old plug-in events	807	# command handling &c
462		808
463	sub inject_event {	809	=item cf::register_command $name => \&callback($ob,$args);
464	my $extension = shift;
465	my $event_code = shift;
466		810
467	my $cb = $hook[$event_code]{$extension}	811	Register a callback for execution when the client sends the user command
468	or return;	812	$name.
469		813
470	&$cb	814	=cut
471	}
472
473	sub inject_global_event {
474	my $event = shift;
475
476	my $cb = $hook[$event]
477	or return;
478
479	List::Util::max map &$_, values %$cb
480	}
481
482	sub inject_command {
483	my ($name, $obj, $params) = @_;
484
485	for my $cmd (@{ $command{$name} }) {
486	$cmd->[1]->($obj, $params);
487	}
488
489	-1
490	}
491		815
492	sub register_command {	816	sub register_command {
493	my ($name, $time, $cb) = @_;	817	my ($name, $cb) = @_;
494		818
495	my $caller = caller;	819	my $caller = caller;
496	#warn "registering command '$name/$time' to '$caller'";	820	#warn "registering command '$name/$time' to '$caller'";
497		821
498	push @{ $command{$name} }, [$time, $cb, $caller];	822	push @{ $COMMAND{$name} }, [$caller, $cb];
499	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
500	}	823	}
		824
		825	=item cf::register_extcmd $name => \&callback($pl,$packet);
		826
		827	Register a callbackf ro execution when the client sends an extcmd packet.
		828
		829	If the callback returns something, it is sent back as if reply was being
		830	called.
		831
		832	=cut
501		833
502	sub register_extcmd {	834	sub register_extcmd {
503	my ($name, $cb) = @_;	835	my ($name, $cb) = @_;
504		836
505	my $caller = caller;	837	$EXTCMD{$name} = $cb;
506	#warn "registering extcmd '$name' to '$caller'";
507
508	$extcmd{$name} = [$cb, $caller];
509	}	838	}
510		839
511	sub register {	840	cf::player->attach (
512	my ($base, $pkg) = @_;	841	on_command => sub {
		842	my ($pl, $name, $params) = @_;
513		843
514	#TODO	844	my $cb = $COMMAND{$name}
515	}	845	or return;
		846
		847	for my $cmd (@$cb) {
		848	$cmd->[1]->($pl->ob, $params);
		849	}
		850
		851	cf::override;
		852	},
		853	on_extcmd => sub {
		854	my ($pl, $buf) = @_;
		855
		856	my $msg = eval { from_json $buf };
		857
		858	if (ref $msg) {
		859	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		860	if (my %reply = $cb->($pl, $msg)) {
		861	$pl->ext_reply ($msg->{msgid}, %reply);
		862	}
		863	}
		864	} else {
		865	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		866	}
		867
		868	cf::override;
		869	},
		870	);
516		871
517	sub load_extension {	872	sub load_extension {
518	my ($path) = @_;	873	my ($path) = @_;
519		874
520	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	875	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
521	my $base = $1;	876	my $base = $1;
522	my $pkg = $1;	877	my $pkg = $1;
523	$pkg =~ s/[^[:word:]]/_/g;	878	$pkg =~ s/[^[:word:]]/_/g;
524	$pkg = "ext::$pkg";	879	$pkg = "ext::$pkg";
525		880
526	warn "loading '$path' into '$pkg'\n";	881	warn "... loading '$path' into '$pkg'\n";
527		882
528	open my $fh, "<:utf8", $path	883	open my $fh, "<:utf8", $path
529	or die "$path: $!";	884	or die "$path: $!";
530		885
531	my $source =	886	my $source =
532	"package $pkg; use strict; use utf8;\n"	887	"package $pkg; use strict; use utf8;\n"
533	. "#line 1 \"$path\"\n{\n"	888	. "#line 1 \"$path\"\n{\n"
534	. (do { local $/; <$fh> })	889	. (do { local $/; <$fh> })
535	. "\n};\n1";	890	. "\n};\n1";
536		891
537	eval $source	892	unless (eval $source) {
538	or die "$path: $@";	893	my $msg = $@ ? "$path: $@\n"
539		894	: "extension disabled.\n";
540	push @exts, $pkg;	895	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
541	$ext_pkg{$base} = $pkg;	896	warn $@;
542		897	warn "mandatory extension failed to load, exiting.\n";
543	# no strict 'refs';	898	exit 1;
544	# @{"$pkg\::ISA"} = ext::;	899	}
545		900	die $@;
546	register $base, $pkg;
547	}
548
549	sub unload_extension {
550	my ($pkg) = @_;
551
552	warn "removing extension $pkg\n";
553
554	# remove hooks
555	#TODO
556	# for my $idx (0 .. $#PLUGIN_EVENT) {
557	# delete $hook[$idx]{$pkg};
558	# }	901	}
559		902
560	# remove commands	903	push @EXTS, $pkg;
561	for my $name (keys %command) {
562	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
563
564	if (@cb) {
565	$command{$name} = \@cb;
566	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
567	} else {
568	delete $command{$name};
569	delete $COMMAND{"$name\000"};
570	}
571	}
572
573	# remove extcmds
574	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
575	delete $extcmd{$name};
576	}
577
578	if (my $cb = $pkg->can ("unload")) {
579	eval {
580	$cb->($pkg);
581	1
582	} or warn "$pkg unloaded, but with errors: $@";
583	}
584
585	Symbol::delete_package $pkg;
586	}	904	}
587		905
588	sub load_extensions {	906	sub load_extensions {
589	my $LIBDIR = maps_directory "perl";
590
591	for my $ext (<$LIBDIR/*.ext>) {	907	for my $ext (<$LIBDIR/*.ext>) {
592	next unless -r $ext;	908	next unless -r $ext;
593	eval {	909	eval {
594	load_extension $ext;	910	load_extension $ext;
595	1	911	1
596	} or warn "$ext not loaded: $@";	912	} or warn "$ext not loaded: $@";
597	}	913	}
598	}	914	}
599		915
600	sub _perl_reload(&) {	916	#############################################################################
		917
		918	=head2 CORE EXTENSIONS
		919
		920	Functions and methods that extend core crossfire objects.
		921
		922	=cut
		923
		924	package cf::player;
		925
		926	use Coro::AIO;
		927
		928	=head3 cf::player
		929
		930	=over 4
		931
		932	=item cf::player::find $login
		933
		934	Returns the given player object, loading it if necessary (might block).
		935
		936	=cut
		937
		938	sub playerdir($) {
		939	cf::localdir
		940	. "/"
		941	. cf::playerdir
		942	. "/"
		943	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		944	}
		945
		946	sub path($) {
		947	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		948
		949	(playerdir $login) . "/$login.pl"
		950	}
		951
		952	sub find_active($) {
		953	$cf::PLAYER{$_[0]}
		954	and $cf::PLAYER{$_[0]}->active
		955	and $cf::PLAYER{$_[0]}
		956	}
		957
		958	sub exists($) {
		959	my ($login) = @_;
		960
		961	$cf::PLAYER{$login}
		962	or cf::sync_job { !aio_stat path $login }
		963	}
		964
		965	sub find($) {
		966	return $cf::PLAYER{$_[0]} || do {
		967	my $login = $_[0];
		968
		969	my $guard = cf::lock_acquire "user_find:$login";
		970
		971	$cf::PLAYER{$_[0]} || do {
		972	my $pl = load_pl path $login
		973	or return;
		974	$cf::PLAYER{$login} = $pl
		975	}
		976	}
		977	}
		978
		979	sub save($) {
		980	my ($pl) = @_;
		981
		982	return if $pl->{deny_save};
		983
		984	my $path = path $pl;
		985	my $guard = cf::lock_acquire "user_save:$path";
		986
		987	return if $pl->{deny_save};
		988
		989	aio_mkdir playerdir $pl, 0770;
		990	$pl->{last_save} = $cf::RUNTIME;
		991
		992	$pl->save_pl ($path);
		993	Coro::cede;
		994	}
		995
		996	sub new($) {
		997	my ($login) = @_;
		998
		999	my $self = create;
		1000
		1001	$self->ob->name ($login);
		1002	$self->{deny_save} = 1;
		1003
		1004	$cf::PLAYER{$login} = $self;
		1005
		1006	$self
		1007	}
		1008
		1009	=item $pl->quit_character
		1010
		1011	Nukes the player without looking back. If logged in, the connection will
		1012	be destroyed. May block for a long time.
		1013
		1014	=cut
		1015
		1016	sub quit_character {
		1017	my ($pl) = @_;
		1018
		1019	$pl->{deny_save} = 1;
		1020	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1021
		1022	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1023	$pl->deactivate;
		1024	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1025	$pl->ns->destroy if $pl->ns;
		1026
		1027	my $path = playerdir $pl;
		1028	my $temp = "$path~$cf::RUNTIME~deleting~";
		1029	aio_rename $path, $temp;
		1030	delete $cf::PLAYER{$pl->ob->name};
		1031	$pl->destroy;
		1032	IO::AIO::aio_rmtree $temp;
		1033	}
		1034
		1035	=item cf::player::list_logins
		1036
		1037	Returns am arrayref of all valid playernames in the system, can take a
		1038	while and may block, so not sync_job-capable, ever.
		1039
		1040	=cut
		1041
		1042	sub list_logins {
		1043	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1044	or return [];
		1045
		1046	my @logins;
		1047
		1048	for my $login (@$dirs) {
		1049	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1050	aio_read $fh, 0, 512, my $buf, 0 or next;
		1051	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1052
		1053	utf8::decode $login;
		1054	push @logins, $login;
		1055	}
		1056
		1057	\@logins
		1058	}
		1059
		1060	=item $player->maps
		1061
		1062	Returns an arrayref of map paths that are private for this
		1063	player. May block.
		1064
		1065	=cut
		1066
		1067	sub maps($) {
		1068	my ($pl) = @_;
		1069
		1070	my $files = aio_readdir playerdir $pl
		1071	or return;
		1072
		1073	my @paths;
		1074
		1075	for (@$files) {
		1076	utf8::decode $_;
		1077	next if /\.(?:pl|pst)$/;
		1078	next unless /^$PATH_SEP/o;
		1079
		1080	s/\.map$//;
		1081	push @paths, "~" . $pl->ob->name . "/" . $_;
		1082	}
		1083
		1084	\@paths
		1085	}
		1086
		1087	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1088
		1089	Sends an ext reply to the player.
		1090
		1091	=cut
		1092
		1093	sub ext_reply($$$%) {
		1094	my ($self, $id, %msg) = @_;
		1095
		1096	$msg{msgid} = $id;
		1097
		1098	$self->send ("ext " . cf::to_json \%msg);
		1099	}
		1100
		1101	package cf;
		1102
		1103	=back
		1104
		1105
		1106	=head3 cf::map
		1107
		1108	=over 4
		1109
		1110	=cut
		1111
		1112	package cf::map;
		1113
		1114	use Fcntl;
		1115	use Coro::AIO;
		1116
		1117	use overload
		1118	'""' => \&as_string,
		1119	fallback => 1;
		1120
		1121	our $MAX_RESET = 3600;
		1122	our $DEFAULT_RESET = 3000;
		1123
		1124	sub generate_random_map {
		1125	my ($self, $rmp) = @_;
		1126	# mit "rum" bekleckern, nicht
		1127	$self->_create_random_map (
		1128	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1129	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1130	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1131	$rmp->{exit_on_final_map},
		1132	$rmp->{xsize}, $rmp->{ysize},
		1133	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1134	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1135	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1136	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1137	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1138	(cf::region::find $rmp->{region}), $rmp->{custom}
		1139	)
		1140	}
		1141
		1142	sub register {
		1143	my (undef, $regex) = @_;
		1144	my $pkg = caller;
		1145
		1146	no strict;
		1147	push @{"$pkg\::ISA"}, __PACKAGE__;
		1148
		1149	$EXT_MAP{$pkg} = qr<$regex>;
		1150	}
		1151
		1152	# also paths starting with '/'
		1153	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1154
		1155	sub thawer_merge {
		1156	my ($self, $merge) = @_;
		1157
		1158	# we have to keep some variables in memory intact
		1159	local $self->{path};
		1160	local $self->{load_path};
		1161	local $self->{deny_save};
		1162	local $self->{deny_reset};
		1163
		1164	$self->SUPER::thawer_merge ($merge);
		1165	}
		1166
		1167	sub normalise {
		1168	my ($path, $base) = @_;
		1169
		1170	# map plan:
		1171	#
		1172	# /! non-realised random map exit (special hack!)
		1173	# {... are special paths that are not being touched
		1174	# ?xxx/... are special absolute paths
		1175	# ?random/... random maps
		1176	# /... normal maps
		1177	# ~user/... per-player map of a specific user
		1178
		1179	$path =~ s/$PATH_SEP/\//go;
		1180
		1181	# treat it as relative path if it starts with
		1182	# something that looks reasonable
		1183	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1184	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1185
		1186	$base =~ s{[^/]+/?$}{};
		1187	$path = "$base/$path";
		1188	}
		1189
		1190	for ($path) {
		1191	redo if s{//}{/};
		1192	redo if s{/\.?/}{/};
		1193	redo if s{/[^/]+/\.\./}{/};
		1194	}
		1195
		1196	$path
		1197	}
		1198
		1199	sub new_from_path {
		1200	my (undef, $path, $base) = @_;
		1201
		1202	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1203
		1204	$path = normalise $path, $base;
		1205
		1206	for my $pkg (keys %EXT_MAP) {
		1207	if ($path =~ $EXT_MAP{$pkg}) {
		1208	my $self = bless cf::map::new, $pkg;
		1209	$self->{path} = $path; $self->path ($path);
		1210	$self->init; # pass $1 etc.
		1211	return $self;
		1212	}
		1213	}
		1214
		1215	Carp::carp "unable to resolve path '$path'.";
		1216	()
		1217	}
		1218
		1219	sub init {
		1220	my ($self) = @_;
		1221
		1222	$self
		1223	}
		1224
		1225	sub as_string {
		1226	my ($self) = @_;
		1227
		1228	"$self->{path}"
		1229	}
		1230
		1231	# the displayed name, this is a one way mapping
		1232	sub visible_name {
		1233	&as_string
		1234	}
		1235
		1236	# the original (read-only) location
		1237	sub load_path {
		1238	my ($self) = @_;
		1239
		1240	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1241	}
		1242
		1243	# the temporary/swap location
		1244	sub save_path {
		1245	my ($self) = @_;
		1246
		1247	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1248	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1249	}
		1250
		1251	# the unique path, undef == no special unique path
		1252	sub uniq_path {
		1253	my ($self) = @_;
		1254
		1255	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1256	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1257	}
		1258
		1259	# and all this just because we cannot iterate over
		1260	# all maps in C++...
		1261	sub change_all_map_light {
		1262	my ($change) = @_;
		1263
		1264	$_->change_map_light ($change)
		1265	for grep $_->outdoor, values %cf::MAP;
		1266	}
		1267
		1268	sub unlink_save {
		1269	my ($self) = @_;
		1270
		1271	utf8::encode (my $save = $self->save_path);
		1272	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1273	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1274	}
		1275
		1276	sub load_header_from($) {
		1277	my ($self, $path) = @_;
		1278
		1279	utf8::encode $path;
		1280	aio_open $path, O_RDONLY, 0
		1281	or return;
		1282
		1283	$self->_load_header ($path)
		1284	or return;
		1285
		1286	$self->{load_path} = $path;
		1287
		1288	1
		1289	}
		1290
		1291	sub load_orig {
		1292	my ($self) = @_;
		1293
		1294	$self->load_header_from ($self->load_path)
		1295	}
		1296
		1297	sub load_temp {
		1298	my ($self) = @_;
		1299
		1300	$self->load_header_from ($self->save_path)
		1301	}
		1302
		1303	sub load_header {
		1304	my ($self) = @_;
		1305
		1306	if ($self->load_temp) {
		1307	$self->last_access ((delete $self->{last_access})
		1308	|| $cf::RUNTIME); #d#
		1309	# safety
		1310	$self->{instantiate_time} = $cf::RUNTIME
		1311	if $self->{instantiate_time} > $cf::RUNTIME;
		1312	} else {
		1313	$self->load_orig
		1314	or return;
		1315
		1316	$self->{load_original} = 1;
		1317	$self->{instantiate_time} = $cf::RUNTIME;
		1318	$self->last_access ($cf::RUNTIME);
		1319	$self->instantiate;
		1320	}
		1321
		1322	1
		1323	}
		1324
		1325	sub find;
		1326	sub find {
		1327	my ($path, $origin) = @_;
		1328
		1329	$path = normalise $path, $origin && $origin->path;
		1330
		1331	cf::lock_wait "map_find:$path";
		1332
		1333	$cf::MAP{$path} || do {
		1334	my $guard = cf::lock_acquire "map_find:$path";
		1335	my $map = new_from_path cf::map $path
		1336	or return;
		1337
		1338	$map->{last_save} = $cf::RUNTIME;
		1339
		1340	$map->load_header
		1341	or return;
		1342
		1343	if ($map->should_reset) {
		1344	$cf::WAIT_FOR_TICK->wait;
		1345	$map->reset;
		1346	undef $guard;
		1347	$map = find $path
		1348	or return;
		1349	}
		1350
		1351	$cf::MAP{$path} = $map
		1352	}
		1353	}
		1354
		1355	sub load {
		1356	my ($self) = @_;
		1357
		1358	my $path = $self->{path};
		1359	my $guard = cf::lock_acquire "map_load:$path";
		1360
		1361	return if $self->in_memory != cf::MAP_SWAPPED;
		1362
		1363	$self->in_memory (cf::MAP_LOADING);
		1364
		1365	$self->alloc;
		1366	$self->_load_objects ($self->{load_path}, 1)
		1367	or return;
		1368
		1369	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1370	if delete $self->{load_original};
		1371
		1372	if (my $uniq = $self->uniq_path) {
		1373	utf8::encode $uniq;
		1374	if (aio_open $uniq, O_RDONLY, 0) {
		1375	$self->clear_unique_items;
		1376	$self->_load_objects ($uniq, 0);
		1377	}
		1378	}
		1379
		1380	Coro::cede;
		1381
		1382	# now do the right thing for maps
		1383	$self->link_multipart_objects;
		1384
		1385	unless ($self->{deny_activate}) {
		1386	$self->decay_objects;
		1387	$self->fix_auto_apply;
		1388	$self->update_buttons;
		1389	Coro::cede;
		1390	$self->set_darkness_map;
		1391	$self->difficulty ($self->estimate_difficulty)
		1392	unless $self->difficulty;
		1393	Coro::cede;
		1394	$self->activate;
		1395	}
		1396
		1397	$self->in_memory (cf::MAP_IN_MEMORY);
		1398	}
		1399
		1400	sub customise_for {
		1401	my ($self, $ob) = @_;
		1402
		1403	return find "~" . $ob->name . "/" . $self->{path}
		1404	if $self->per_player;
		1405
		1406	$self
		1407	}
		1408
		1409	# find and load all maps in the 3x3 area around a map
		1410	sub load_diag {
601	my ($msg) = @_;	1411	my ($map) = @_;
602		1412
603	$msg->("reloading...");	1413	my @diag; # diagonal neighbours
604		1414
605	eval {	1415	for (0 .. 3) {
606	# 1. cancel all watchers	1416	my $neigh = $map->tile_path ($_)
607	$_->cancel for Event::all_watchers;	1417	or next;
		1418	$neigh = find $neigh, $map
		1419	or next;
		1420	$neigh->load;
608		1421
609	# 2. unload all extensions	1422	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
610	for (@exts) {	1423	[$neigh->tile_path (($_ + 1) % 4), $neigh];
611	$msg->("unloading <$_>");	1424	}
612	unload_extension $_;
613	}
614		1425
615	# 3. unload all modules loaded from $LIBDIR	1426	for (@diag) {
616	while (my ($k, $v) = each %INC) {	1427	my $neigh = find @$_
617	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1428	or next;
		1429	$neigh->load;
		1430	}
		1431	}
618		1432
619	$msg->("removing <$k>");	1433	sub find_sync {
620	delete $INC{$k};	1434	my ($path, $origin) = @_;
621		1435
622	$k =~ s/\.pm$//;	1436	cf::sync_job { find $path, $origin }
623	$k =~ s/\//::/g;	1437	}
624		1438
625	if (my $cb = $k->can ("unload_module")) {	1439	sub do_load_sync {
626	$cb->();	1440	my ($map) = @_;
		1441
		1442	cf::sync_job { $map->load };
		1443	}
		1444
		1445	our %MAP_PREFETCH;
		1446	our $MAP_PREFETCHER = undef;
		1447
		1448	sub find_async {
		1449	my ($path, $origin) = @_;
		1450
		1451	$path = normalise $path, $origin && $origin->{path};
		1452
		1453	if (my $map = $cf::MAP{$path}) {
		1454	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1455	}
		1456
		1457	undef $MAP_PREFETCH{$path};
		1458	$MAP_PREFETCHER ||= cf::async {
		1459	while (%MAP_PREFETCH) {
		1460	for my $path (keys %MAP_PREFETCH) {
		1461	my $map = find $path
		1462	or next;
		1463	$map->load;
		1464
		1465	delete $MAP_PREFETCH{$path};
627	}	1466	}
628
629	Symbol::delete_package $k;
630	}
631
632	# 4. get rid of safe::, as good as possible
633	Symbol::delete_package "safe::$_"
634	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
635
636	# 5. remove register_script_function callbacks
637	# TODO
638		1467	}
639	# 6. unload cf.pm "a bit"	1468	undef $MAP_PREFETCHER;
640	delete $INC{"cf.pm"};
641
642	# don't, removes xs symbols, too,
643	# and global variables created in xs
644	#Symbol::delete_package __PACKAGE__;
645
646	# 7. reload cf.pm
647	$msg->("reloading cf.pm");
648	require cf;
649	};	1469	};
650	$msg->($@) if $@;
651		1470
652	$msg->("reloaded");	1471	()
653	};	1472	}
654		1473
655	sub perl_reload() {	1474	sub save {
656	_perl_reload {	1475	my ($self) = @_;
657	warn $_[0];	1476
658	print "$_[0]\n";	1477	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1478
		1479	$self->{last_save} = $cf::RUNTIME;
		1480
		1481	return unless $self->dirty;
		1482
		1483	my $save = $self->save_path; utf8::encode $save;
		1484	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1485
		1486	$self->{load_path} = $save;
		1487
		1488	return if $self->{deny_save};
		1489
		1490	local $self->{last_access} = $self->last_access;#d#
		1491
		1492	cf::async {
		1493	$_->contr->save for $self->players;
659	};	1494	};
660	}
661		1495
662	register_command "perl-reload", 0, sub {	1496	if ($uniq) {
663	my ($who, $arg) = @_;	1497	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
664		1498	$self->_save_objects ($uniq, cf::IO_UNIQUES);
665	if ($who->flag (FLAG_WIZ)) {
666	_perl_reload {
667	warn $_[0];
668	$who->message ($_[0]);
669	};
670	}
671	};
672
673	#############################################################################
674	# extcmd framework, basically convert ext <msg>
675	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
676
677	attach_to_players
678	on_extcmd => sub {
679	my ($pl, $buf) = @_;
680
681	my $msg = eval { from_json $buf };
682
683	if (ref $msg) {
684	if (my $cb = $extcmd{$msg->{msgtype}}) {
685	if (my %reply = $cb->[0]->($pl, $msg)) {
686	$pl->ext_reply ($msg->{msgid}, %reply);
687	}
688	}
689	} else {	1499	} else {
690	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1500	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
691	}
692
693	cf::override;
694	},	1501	}
695	;	1502	}
696		1503
697	#############################################################################	1504	sub swap_out {
698	# load/save/clean perl data associated with a map
699
700	*cf::mapsupport::on_clean = sub {
701	my ($map) = @_;	1505	my ($self) = @_;
702		1506
703	my $path = $map->tmpname;	1507	# save first because save cedes
704	defined $path or return;	1508	$self->save;
705		1509
706	unlink "$path.pst";	1510	my $lock = cf::lock_acquire "map_data:" . $self->path;
707	};
708		1511
709	# old style persistent data, TODO: remove #d#	1512	return if $self->players;
710	*cf::mapsupport::on_swapin =	1513	return if $self->in_memory != cf::MAP_IN_MEMORY;
711	*cf::mapsupport::on_load = sub {	1514	return if $self->{deny_save};
		1515
		1516	$self->clear;
		1517	$self->in_memory (cf::MAP_SWAPPED);
		1518	}
		1519
		1520	sub reset_at {
712	my ($map) = @_;	1521	my ($self) = @_;
713		1522
714	my $path = $map->tmpname;	1523	# TODO: safety, remove and allow resettable per-player maps
715	$path = $map->path unless defined $path;	1524	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1525	return 1e99 if $self->{deny_reset};
716		1526
717	open my $fh, "<:raw", "$path.cfperl"	1527	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
718	or return; # no perl data	1528	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
719		1529
720	my $data = Storable::thaw do { local $/; <$fh> };	1530	$time + $to
		1531	}
721		1532
722	$data->{version} <= 1	1533	sub should_reset {
		1534	my ($self) = @_;
		1535
		1536	$self->reset_at <= $cf::RUNTIME
		1537	}
		1538
		1539	sub reset {
		1540	my ($self) = @_;
		1541
		1542	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1543
		1544	return if $self->players;
		1545	return if $self->isa ("ext::map_per_player");#d#
		1546
		1547	warn "resetting map ", $self->path;#d#
		1548
		1549	delete $cf::MAP{$self->path};
		1550
		1551	$self->in_memory (cf::MAP_SWAPPED);
		1552	$self->clear;
		1553
		1554	$_->clear_links_to ($self) for values %cf::MAP;
		1555
		1556	$self->unlink_save;
		1557	$self->destroy;
		1558	}
		1559
		1560	my $nuke_counter = "aaaa";
		1561
		1562	sub nuke {
		1563	my ($self) = @_;
		1564
		1565	delete $cf::MAP{$self->path};
		1566
		1567	$self->unlink_save;
		1568
		1569	bless $self, "cf::map";
		1570	delete $self->{deny_reset};
		1571	$self->{deny_save} = 1;
		1572	$self->reset_timeout (1);
		1573	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1574
		1575	$cf::MAP{$self->path} = $self;
		1576
		1577	$self->reset; # polite request, might not happen
		1578	}
		1579
		1580	=item cf::map::unique_maps
		1581
		1582	Returns an arrayref of paths of all shared maps that have
		1583	instantiated unique items. May block.
		1584
		1585	=cut
		1586
		1587	sub unique_maps() {
		1588	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
723	or return; # too new	1589	or return;
724		1590
725	$map->_set_obs ($data->{obs});	1591	my @paths;
726	$map->invoke (EVENT_MAP_UPGRADE);
727	};
728		1592
729	attach_to_maps prio => -10000, package => cf::mapsupport::;	1593	for (@$files) {
		1594	utf8::decode $_;
		1595	next if /\.pst$/;
		1596	next unless /^$PATH_SEP/o;
730		1597
731	#############################################################################	1598	s/\.map$//;
732	# load/save perl data associated with player->ob objects	1599	push @paths, $_;
733
734	sub all_objects(@) {
735	@_, map all_objects ($_->inv), @_
736	}
737
738	attach_to_players
739	on_load => sub {
740	my ($pl, $path) = @_;
741
742	for my $o (all_objects $pl->ob) {
743	if (my $value = $o->get_ob_key_value ("_perl_data")) {
744	$o->set_ob_key_value ("_perl_data");
745
746	%$o = %{ Storable::thaw pack "H*", $value };
747	}
748	}
749	},	1600	}
750	;
751		1601
752	#############################################################################	1602	\@paths
753	# core extensions - in perl
754
755	=item cf::player::exists $login
756
757	Returns true when the given account exists.
758
759	=cut
760
761	sub cf::player::exists($) {
762	cf::player::find $_[0]
763	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
764	}	1603	}
765		1604
		1605	package cf;
		1606
		1607	=back
		1608
		1609	=head3 cf::object
		1610
		1611	=cut
		1612
		1613	package cf::object;
		1614
		1615	=over 4
		1616
		1617	=item $ob->inv_recursive
		1618
		1619	Returns the inventory of the object _and_ their inventories, recursively.
		1620
		1621	=cut
		1622
		1623	sub inv_recursive_;
		1624	sub inv_recursive_ {
		1625	map { $_, inv_recursive_ $_->inv } @_
		1626	}
		1627
		1628	sub inv_recursive {
		1629	inv_recursive_ inv $_[0]
		1630	}
		1631
		1632	package cf;
		1633
		1634	=back
		1635
		1636	=head3 cf::object::player
		1637
		1638	=over 4
		1639
766	=item $player->reply ($npc, $msg[, $flags])	1640	=item $player_object->reply ($npc, $msg[, $flags])
767		1641
768	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1642	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
769	can be C<undef>. Does the right thing when the player is currently in a	1643	can be C<undef>. Does the right thing when the player is currently in a
770	dialogue with the given NPC character.	1644	dialogue with the given NPC character.
771		1645
772	=cut	1646	=cut
773		1647
774	# rough implementation of a future "reply" method that works	1648	# rough implementation of a future "reply" method that works
775	# with dialog boxes.	1649	# with dialog boxes.
		1650	#TODO: the first argument must go, split into a $npc->reply_to ( method
776	sub cf::object::player::reply($$$;$) {	1651	sub cf::object::player::reply($$$;$) {
777	my ($self, $npc, $msg, $flags) = @_;	1652	my ($self, $npc, $msg, $flags) = @_;
778		1653
779	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1654	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
780		1655
…		…
784	$msg = $npc->name . " says: $msg" if $npc;	1659	$msg = $npc->name . " says: $msg" if $npc;
785	$self->message ($msg, $flags);	1660	$self->message ($msg, $flags);
786	}	1661	}
787	}	1662	}
788		1663
789	=item $player->ext_reply ($msgid, $msgtype, %msg)	1664	=item $player_object->may ("access")
790		1665
791	Sends an ext reply to the player.	1666	Returns wether the given player is authorized to access resource "access"
		1667	(e.g. "command_wizcast").
792		1668
793	=cut	1669	=cut
794		1670
795	sub cf::player::ext_reply($$$%) {	1671	sub cf::object::player::may {
		1672	my ($self, $access) = @_;
		1673
		1674	$self->flag (cf::FLAG_WIZ) ||
		1675	(ref $cf::CFG{"may_$access"}
		1676	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1677	: $cf::CFG{"may_$access"})
		1678	}
		1679
		1680	=item $player_object->enter_link
		1681
		1682	Freezes the player and moves him/her to a special map (C<{link}>).
		1683
		1684	The player should be reasonably safe there for short amounts of time. You
		1685	I<MUST> call C<leave_link> as soon as possible, though.
		1686
		1687	Will never block.
		1688
		1689	=item $player_object->leave_link ($map, $x, $y)
		1690
		1691	Moves the player out of the special C<{link}> map onto the specified
		1692	map. If the map is not valid (or omitted), the player will be moved back
		1693	to the location he/she was before the call to C<enter_link>, or, if that
		1694	fails, to the emergency map position.
		1695
		1696	Might block.
		1697
		1698	=cut
		1699
		1700	sub link_map {
		1701	unless ($LINK_MAP) {
		1702	$LINK_MAP = cf::map::find "{link}"
		1703	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1704	$LINK_MAP->load;
		1705	}
		1706
		1707	$LINK_MAP
		1708	}
		1709
		1710	sub cf::object::player::enter_link {
		1711	my ($self) = @_;
		1712
		1713	$self->deactivate_recursive;
		1714
		1715	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1716
		1717	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1718	if $self->map;
		1719
		1720	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1721	}
		1722
		1723	sub cf::object::player::leave_link {
		1724	my ($self, $map, $x, $y) = @_;
		1725
		1726	my $link_pos = delete $self->{_link_pos};
		1727
		1728	unless ($map) {
		1729	# restore original map position
		1730	($map, $x, $y) = @{ $link_pos || [] };
		1731	$map = cf::map::find $map;
		1732
		1733	unless ($map) {
		1734	($map, $x, $y) = @$EMERGENCY_POSITION;
		1735	$map = cf::map::find $map
		1736	or die "FATAL: cannot load emergency map\n";
		1737	}
		1738	}
		1739
		1740	($x, $y) = (-1, -1)
		1741	unless (defined $x) && (defined $y);
		1742
		1743	# use -1 or undef as default coordinates, not 0, 0
		1744	($x, $y) = ($map->enter_x, $map->enter_y)
		1745	if $x <=0 && $y <= 0;
		1746
		1747	$map->load;
		1748	$map->load_diag;
		1749
		1750	return unless $self->contr->active;
		1751	$self->activate_recursive;
		1752	$self->enter_map ($map, $x, $y);
		1753	}
		1754
		1755	cf::player->attach (
		1756	on_logout => sub {
		1757	my ($pl) = @_;
		1758
		1759	# abort map switching before logout
		1760	if ($pl->ob->{_link_pos}) {
		1761	cf::sync_job {
		1762	$pl->ob->leave_link
		1763	};
		1764	}
		1765	},
		1766	on_login => sub {
		1767	my ($pl) = @_;
		1768
		1769	# try to abort aborted map switching on player login :)
		1770	# should happen only on crashes
		1771	if ($pl->ob->{_link_pos}) {
		1772	$pl->ob->enter_link;
		1773	(async {
		1774	# we need this sleep as the login has a concurrent enter_exit running
		1775	# and this sleep increases chances of the player not ending up in scorn
		1776	$pl->ob->reply (undef,
		1777	"There was an internal problem at your last logout, "
		1778	. "the server will try to bring you to your intended destination in a second.",
		1779	cf::NDI_RED);
		1780	Coro::Timer::sleep 1;
		1781	$pl->ob->leave_link;
		1782	})->prio (2);
		1783	}
		1784	},
		1785	);
		1786
		1787	=item $player_object->goto ($path, $x, $y)
		1788
		1789	=cut
		1790
		1791	sub cf::object::player::goto {
		1792	my ($self, $path, $x, $y) = @_;
		1793
		1794	$self->enter_link;
		1795
		1796	(async {
		1797	my $map = cf::map::find $path;
		1798	$map = $map->customise_for ($self) if $map;
		1799
		1800	# warn "entering ", $map->path, " at ($x, $y)\n"
		1801	# if $map;
		1802
		1803	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1804
		1805	$self->leave_link ($map, $x, $y);
		1806	})->prio (1);
		1807	}
		1808
		1809	=item $player_object->enter_exit ($exit_object)
		1810
		1811	=cut
		1812
		1813	sub parse_random_map_params {
		1814	my ($spec) = @_;
		1815
		1816	my $rmp = { # defaults
		1817	xsize => (cf::rndm 15, 40),
		1818	ysize => (cf::rndm 15, 40),
		1819	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1820	#layout => string,
		1821	};
		1822
		1823	for (split /\n/, $spec) {
		1824	my ($k, $v) = split /\s+/, $_, 2;
		1825
		1826	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1827	}
		1828
		1829	$rmp
		1830	}
		1831
		1832	sub prepare_random_map {
		1833	my ($exit) = @_;
		1834
		1835	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1836
		1837	# all this does is basically replace the /! path by
		1838	# a new random map path (?random/...) with a seed
		1839	# that depends on the exit object
		1840
		1841	my $rmp = parse_random_map_params $exit->msg;
		1842
		1843	if ($exit->map) {
		1844	$rmp->{region} = $exit->map->region_name;
		1845	$rmp->{origin_map} = $exit->map->path;
		1846	$rmp->{origin_x} = $exit->x;
		1847	$rmp->{origin_y} = $exit->y;
		1848	}
		1849
		1850	$rmp->{random_seed} ||= $exit->random_seed;
		1851
		1852	my $data = cf::to_json $rmp;
		1853	my $md5 = Digest::MD5::md5_hex $data;
		1854	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1855
		1856	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1857	aio_write $fh, 0, (length $data), $data, 0;
		1858	undef $fh;
		1859	aio_rename "$meta~", $meta;
		1860
		1861	$exit->slaying ("?random/$md5");
		1862	$exit->msg (undef);
		1863	}
		1864	}
		1865
		1866	sub cf::object::player::enter_exit {
796	my ($self, $id, %msg) = @_;	1867	my ($self, $exit) = @_;
797		1868
798	$msg{msgid} = $id;	1869	return unless $self->type == cf::PLAYER;
799		1870
800	$self->send ("ext " . to_json \%msg);	1871	$self->enter_link;
801	}
802		1872
803	#############################################################################	1873	(async {
804	# map scripting support	1874	$self->deactivate_recursive; # just to be sure
		1875	unless (eval {
		1876	prepare_random_map $exit
		1877	if $exit->slaying eq "/!";
		1878
		1879	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1880	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1881
		1882	1;
		1883	}) {
		1884	$self->message ("Something went wrong deep within the crossfire server. "
		1885	. "I'll try to bring you back to the map you were before. "
		1886	. "Please report this to the dungeon master!",
		1887	cf::NDI_UNIQUE | cf::NDI_RED);
		1888
		1889	warn "ERROR in enter_exit: $@";
		1890	$self->leave_link;
		1891	}
		1892	})->prio (1);
		1893	}
		1894
		1895	=head3 cf::client
		1896
		1897	=over 4
		1898
		1899	=item $client->send_drawinfo ($text, $flags)
		1900
		1901	Sends a drawinfo packet to the client. Circumvents output buffering so
		1902	should not be used under normal circumstances.
		1903
		1904	=cut
		1905
		1906	sub cf::client::send_drawinfo {
		1907	my ($self, $text, $flags) = @_;
		1908
		1909	utf8::encode $text;
		1910	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1911	}
		1912
		1913
		1914	=item $success = $client->query ($flags, "text", \&cb)
		1915
		1916	Queues a query to the client, calling the given callback with
		1917	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1918	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1919
		1920	Queries can fail, so check the return code. Or don't, as queries will become
		1921	reliable at some point in the future.
		1922
		1923	=cut
		1924
		1925	sub cf::client::query {
		1926	my ($self, $flags, $text, $cb) = @_;
		1927
		1928	return unless $self->state == ST_PLAYING
		1929	|| $self->state == ST_SETUP
		1930	|| $self->state == ST_CUSTOM;
		1931
		1932	$self->state (ST_CUSTOM);
		1933
		1934	utf8::encode $text;
		1935	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1936
		1937	$self->send_packet ($self->{query_queue}[0][0])
		1938	if @{ $self->{query_queue} } == 1;
		1939	}
		1940
		1941	cf::client->attach (
		1942	on_reply => sub {
		1943	my ($ns, $msg) = @_;
		1944
		1945	# this weird shuffling is so that direct followup queries
		1946	# get handled first
		1947	my $queue = delete $ns->{query_queue}
		1948	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1949
		1950	(shift @$queue)->[1]->($msg);
		1951
		1952	push @{ $ns->{query_queue} }, @$queue;
		1953
		1954	if (@{ $ns->{query_queue} } == @$queue) {
		1955	if (@$queue) {
		1956	$ns->send_packet ($ns->{query_queue}[0][0]);
		1957	} else {
		1958	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1959	}
		1960	}
		1961	},
		1962	);
		1963
		1964	=item $client->async (\&cb)
		1965
		1966	Create a new coroutine, running the specified callback. The coroutine will
		1967	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1968	or loss of connection).
		1969
		1970	=cut
		1971
		1972	sub cf::client::async {
		1973	my ($self, $cb) = @_;
		1974
		1975	my $coro = &Coro::async ($cb);
		1976
		1977	$coro->on_destroy (sub {
		1978	delete $self->{_coro}{$coro+0};
		1979	});
		1980
		1981	$self->{_coro}{$coro+0} = $coro;
		1982
		1983	$coro
		1984	}
		1985
		1986	cf::client->attach (
		1987	on_destroy => sub {
		1988	my ($ns) = @_;
		1989
		1990	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1991	},
		1992	);
		1993
		1994	=back
		1995
		1996
		1997	=head2 SAFE SCRIPTING
		1998
		1999	Functions that provide a safe environment to compile and execute
		2000	snippets of perl code without them endangering the safety of the server
		2001	itself. Looping constructs, I/O operators and other built-in functionality
		2002	is not available in the safe scripting environment, and the number of
		2003	functions and methods that can be called is greatly reduced.
		2004
		2005	=cut
805		2006
806	our $safe = new Safe "safe";	2007	our $safe = new Safe "safe";
807	our $safe_hole = new Safe::Hole;	2008	our $safe_hole = new Safe::Hole;
808		2009
809	$SIG{FPE} = 'IGNORE';	2010	$SIG{FPE} = 'IGNORE';
810		2011
811	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2012	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
812		2013
813	# here we export the classes and methods available to script code	2014	# here we export the classes and methods available to script code
814		2015
		2016	=pod
		2017
		2018	The following fucntions and emthods are available within a safe environment:
		2019
		2020	cf::object contr pay_amount pay_player map
		2021	cf::object::player player
		2022	cf::player peaceful
		2023	cf::map trigger
		2024
		2025	=cut
		2026
815	for (	2027	for (
816	["cf::object" => qw(contr pay_amount pay_player)],	2028	["cf::object" => qw(contr pay_amount pay_player map)],
817	["cf::object::player" => qw(player)],	2029	["cf::object::player" => qw(player)],
818	["cf::player" => qw(peaceful)],	2030	["cf::player" => qw(peaceful)],
		2031	["cf::map" => qw(trigger)],
819	) {	2032	) {
820	no strict 'refs';	2033	no strict 'refs';
821	my ($pkg, @funs) = @$_;	2034	my ($pkg, @funs) = @$_;
822	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2035	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
823	for @funs;	2036	for @funs;
824	}	2037	}
		2038
		2039	=over 4
		2040
		2041	=item @retval = safe_eval $code, [var => value, ...]
		2042
		2043	Compiled and executes the given perl code snippet. additional var/value
		2044	pairs result in temporary local (my) scalar variables of the given name
		2045	that are available in the code snippet. Example:
		2046
		2047	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2048
		2049	=cut
825		2050
826	sub safe_eval($;@) {	2051	sub safe_eval($;@) {
827	my ($code, %vars) = @_;	2052	my ($code, %vars) = @_;
828		2053
829	my $qcode = $code;	2054	my $qcode = $code;
…		…
852	}	2077	}
853		2078
854	wantarray ? @res : $res[0]	2079	wantarray ? @res : $res[0]
855	}	2080	}
856		2081
		2082	=item cf::register_script_function $function => $cb
		2083
		2084	Register a function that can be called from within map/npc scripts. The
		2085	function should be reasonably secure and should be put into a package name
		2086	like the extension.
		2087
		2088	Example: register a function that gets called whenever a map script calls
		2089	C<rent::overview>, as used by the C<rent> extension.
		2090
		2091	cf::register_script_function "rent::overview" => sub {
		2092	...
		2093	};
		2094
		2095	=cut
		2096
857	sub register_script_function {	2097	sub register_script_function {
858	my ($fun, $cb) = @_;	2098	my ($fun, $cb) = @_;
859		2099
860	no strict 'refs';	2100	no strict 'refs';
861	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2101	*{"safe::$fun"} = $safe_hole->wrap ($cb);
862	}	2102	}
863		2103
		2104	=back
		2105
		2106	=cut
		2107
		2108	#############################################################################
		2109
		2110	=head2 EXTENSION DATABASE SUPPORT
		2111
		2112	Crossfire maintains a very simple database for extension use. It can
		2113	currently store anything that can be serialised using Storable, which
		2114	excludes objects.
		2115
		2116	The parameter C<$family> should best start with the name of the extension
		2117	using it, it should be unique.
		2118
		2119	=over 4
		2120
		2121	=item $hashref = cf::db_get $family
		2122
		2123	Return a hashref for use by the extension C<$family>, which can be
		2124	modified. After modifications, you have to call C<cf::db_dirty> or
		2125	C<cf::db_sync>.
		2126
		2127	=item $value = cf::db_get $family => $key
		2128
		2129	Returns a single value from the database
		2130
		2131	=item cf::db_put $family => $hashref
		2132
		2133	Stores the given family hashref into the database. Updates are delayed, if
		2134	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2135
		2136	=item cf::db_put $family => $key => $value
		2137
		2138	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2139	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2140
		2141	=item cf::db_dirty
		2142
		2143	Marks the database as dirty, to be updated at a later time.
		2144
		2145	=item cf::db_sync
		2146
		2147	Immediately write the database to disk I<if it is dirty>.
		2148
		2149	=cut
		2150
		2151	our $DB;
		2152
		2153	{
		2154	my $path = cf::localdir . "/database.pst";
		2155
		2156	sub db_load() {
		2157	$DB = stat $path ? Storable::retrieve $path : { };
		2158	}
		2159
		2160	my $pid;
		2161
		2162	sub db_save() {
		2163	waitpid $pid, 0 if $pid;
		2164	if (0 == ($pid = fork)) {
		2165	$DB->{_meta}{version} = 1;
		2166	Storable::nstore $DB, "$path~";
		2167	rename "$path~", $path;
		2168	cf::_exit 0 if defined $pid;
		2169	}
		2170	}
		2171
		2172	my $dirty;
		2173
		2174	sub db_sync() {
		2175	db_save if $dirty;
		2176	undef $dirty;
		2177	}
		2178
		2179	my $idle = Event->idle (min => 10, max => 20, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2180	db_sync;
		2181	});
		2182
		2183	sub db_dirty() {
		2184	$dirty = 1;
		2185	$idle->start;
		2186	}
		2187
		2188	sub db_get($;$) {
		2189	@_ >= 2
		2190	? $DB->{$_[0]}{$_[1]}
		2191	: ($DB->{$_[0]} ||= { })
		2192	}
		2193
		2194	sub db_put($$;$) {
		2195	if (@_ >= 3) {
		2196	$DB->{$_[0]}{$_[1]} = $_[2];
		2197	} else {
		2198	$DB->{$_[0]} = $_[1];
		2199	}
		2200	db_dirty;
		2201	}
		2202
		2203	cf::global->attach (
		2204	prio => 10000,
		2205	on_cleanup => sub {
		2206	db_sync;
		2207	},
		2208	);
		2209	}
		2210
864	#############################################################################	2211	#############################################################################
865	# the server's main()	2212	# the server's main()
866		2213
		2214	sub cfg_load {
		2215	open my $fh, "<:utf8", cf::confdir . "/config"
		2216	or return;
		2217
		2218	local $/;
		2219	*CFG = YAML::Syck::Load <$fh>;
		2220
		2221	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2222
		2223	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2224	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2225
		2226	if (exists $CFG{mlockall}) {
		2227	eval {
		2228	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2229	and die "WARNING: m(un)lockall failed: $!\n";
		2230	};
		2231	warn $@ if $@;
		2232	}
		2233	}
		2234
867	sub main {	2235	sub main {
		2236	# we must not ever block the main coroutine
		2237	local $Coro::idle = sub {
		2238	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2239	(async {
		2240	Event::one_event;
		2241	})->prio (Coro::PRIO_MAX);
		2242	};
		2243
		2244	cfg_load;
		2245	db_load;
		2246	load_extensions;
		2247
		2248	$TICK_WATCHER->start;
868	Event::loop;	2249	Event::loop;
869	}	2250	}
870		2251
871	#############################################################################	2252	#############################################################################
872	# initialisation	2253	# initialisation and cleanup
873		2254
874	register "<global>", __PACKAGE__;	2255	# install some emergency cleanup handlers
		2256	BEGIN {
		2257	for my $signal (qw(INT HUP TERM)) {
		2258	Event->signal (
		2259	data => WF_AUTOCANCEL,
		2260	signal => $signal,
		2261	cb => sub {
		2262	cf::cleanup "SIG$signal";
		2263	},
		2264	);
		2265	}
		2266	}
		2267
		2268	sub emergency_save() {
		2269	my $freeze_guard = cf::freeze_mainloop;
		2270
		2271	warn "enter emergency perl save\n";
		2272
		2273	cf::sync_job {
		2274	# use a peculiar iteration method to avoid tripping on perl
		2275	# refcount bugs in for. also avoids problems with players
		2276	# and maps saved/destroyed asynchronously.
		2277	warn "begin emergency player save\n";
		2278	for my $login (keys %cf::PLAYER) {
		2279	my $pl = $cf::PLAYER{$login} or next;
		2280	$pl->valid or next;
		2281	$pl->save;
		2282	}
		2283	warn "end emergency player save\n";
		2284
		2285	warn "begin emergency map save\n";
		2286	for my $path (keys %cf::MAP) {
		2287	my $map = $cf::MAP{$path} or next;
		2288	$map->valid or next;
		2289	$map->save;
		2290	}
		2291	warn "end emergency map save\n";
		2292	};
		2293
		2294	warn "leave emergency perl save\n";
		2295	}
		2296
		2297	sub reload() {
		2298	# can/must only be called in main
		2299	if ($Coro::current != $Coro::main) {
		2300	warn "can only reload from main coroutine";
		2301	return;
		2302	}
		2303
		2304	warn "reloading...";
		2305
		2306	warn "cancelling server ticker";
		2307	$TICK_WATCHER->cancel;
		2308
		2309	cf::emergency_save;
		2310
		2311	eval {
		2312	# if anything goes wrong in here, we should simply crash as we already saved
		2313
		2314	warn "syncing database to disk";
		2315	cf::db_sync;
		2316
		2317	warn "cancelling all WF_AUTOCANCEL watchers";
		2318	for (Event::all_watchers) {
		2319	$_->cancel if $_->data & WF_AUTOCANCEL;
		2320	}
		2321
		2322	warn "flushing outstanding aio requests";
		2323	for (;;) {
		2324	IO::AIO::flush;
		2325	Coro::cede;
		2326	last unless IO::AIO::nreqs;
		2327	warn "iterate...";
		2328	}
		2329
		2330	warn "cancelling all extension coros";
		2331	$_->cancel for values %EXT_CORO;
		2332	%EXT_CORO = ();
		2333
		2334	warn "removing commands";
		2335	%COMMAND = ();
		2336
		2337	warn "removing ext commands";
		2338	%EXTCMD = ();
		2339
		2340	warn "unloading/nuking all extensions";
		2341	for my $pkg (@EXTS) {
		2342	warn "... unloading $pkg";
		2343
		2344	if (my $cb = $pkg->can ("unload")) {
		2345	eval {
		2346	$cb->($pkg);
		2347	1
		2348	} or warn "$pkg unloaded, but with errors: $@";
		2349	}
		2350
		2351	warn "... nuking $pkg";
		2352	Symbol::delete_package $pkg;
		2353	}
		2354
		2355	warn "unloading all perl modules loaded from $LIBDIR";
		2356	while (my ($k, $v) = each %INC) {
		2357	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2358
		2359	warn "... unloading $k";
		2360	delete $INC{$k};
		2361
		2362	$k =~ s/\.pm$//;
		2363	$k =~ s/\//::/g;
		2364
		2365	if (my $cb = $k->can ("unload_module")) {
		2366	$cb->();
		2367	}
		2368
		2369	Symbol::delete_package $k;
		2370	}
		2371
		2372	warn "getting rid of safe::, as good as possible";
		2373	Symbol::delete_package "safe::$_"
		2374	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2375
		2376	warn "unloading cf.pm \"a bit\"";
		2377	delete $INC{"cf.pm"};
		2378
		2379	# don't, removes xs symbols, too,
		2380	# and global variables created in xs
		2381	#Symbol::delete_package __PACKAGE__;
		2382
		2383	warn "unload completed, starting to reload now";
		2384
		2385	warn "reloading cf.pm";
		2386	require cf;
		2387	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2388
		2389	warn "loading config and database again";
		2390	cf::cfg_load;
		2391	cf::db_load;
		2392
		2393	warn "loading extensions";
		2394	cf::load_extensions;
		2395
		2396	warn "reattaching attachments to objects/players";
		2397	_global_reattach;
		2398	warn "reattaching attachments to maps";
		2399	reattach $_ for values %MAP;
		2400
		2401	warn "restarting server ticker";
		2402
		2403	$TICK_WATCHER->start;
		2404	};
		2405
		2406	if ($@) {
		2407	warn $@;
		2408	warn "error while reloading, exiting.";
		2409	exit 1;
		2410	}
		2411
		2412	warn "reloaded";
		2413	};
		2414
		2415	our $RELOAD_WATCHER; # used only during reload
		2416
		2417	register_command "reload" => sub {
		2418	my ($who, $arg) = @_;
		2419
		2420	if ($who->flag (FLAG_WIZ)) {
		2421	$who->message ("reloading server.");
		2422
		2423	# doing reload synchronously and two reloads happen back-to-back,
		2424	# coro crashes during coro_state_free->destroy here.
		2425
		2426	$RELOAD_WATCHER ||= Event->timer (after => 0, data => WF_AUTOCANCEL, cb => sub {
		2427	reload;
		2428	undef $RELOAD_WATCHER;
		2429	});
		2430	}
		2431	};
875		2432
876	unshift @INC, $LIBDIR;	2433	unshift @INC, $LIBDIR;
877		2434
878	load_extensions;	2435	my $bug_warning = 0;
879		2436
880	$TICK_WATCHER = Event->timer (	2437	$TICK_WATCHER = Event->timer (
		2438	reentrant => 0,
		2439	parked => 1,
881	prio => 1,	2440	prio => 0,
882	at => $NEXT_TICK || 1,	2441	at => $NEXT_TICK || $TICK,
		2442	data => WF_AUTOCANCEL,
883	cb => sub {	2443	cb => sub {
		2444	if ($Coro::current != $Coro::main) {
		2445	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2446	unless ++$bug_warning > 10;
		2447	return;
		2448	}
		2449
		2450	$NOW = Event::time;
		2451
884	cf::server_tick; # one server iteration	2452	cf::server_tick; # one server iteration
885		2453	$RUNTIME += $TICK;
886	my $NOW = Event::time;
887	$NEXT_TICK += $TICK;	2454	$NEXT_TICK += $TICK;
888		2455
		2456	$WAIT_FOR_TICK->broadcast;
		2457	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2458
889	# if we are delayed by four ticks, skip them all	2459	# if we are delayed by four ticks or more, skip them all
890	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2460	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
891		2461
892	$TICK_WATCHER->at ($NEXT_TICK);	2462	$TICK_WATCHER->at ($NEXT_TICK);
893	$TICK_WATCHER->start;	2463	$TICK_WATCHER->start;
894	},	2464	},
895	);	2465	);
896		2466
897	_reload_2;	2467	IO::AIO::max_poll_time $TICK * 0.2;
		2468
		2469	$AIO_POLL_WATCHER = Event->io (
		2470	fd => IO::AIO::poll_fileno,
		2471	poll => 'r',
		2472	prio => 5,
		2473	data => WF_AUTOCANCEL,
		2474	cb => \&IO::AIO::poll_cb,
		2475	);
		2476
		2477	$WRITE_RUNTIME_WATCHER = Event->timer (
		2478	data => WF_AUTOCANCEL,
		2479	after => 1,
		2480	interval => 10,
		2481	cb => Coro::unblock_sub {
		2482	write_runtime
		2483	or warn "ERROR: unable to write runtime file: $!";
		2484	},
		2485	);
		2486
		2487	END { cf::emergency_save }
898		2488
899	1	2489	1
900		2490

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