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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.9 by root, Fri Mar 17 03:22:00 2006 UTC vs.
Revision 1.140 by root, Fri Jan 5 20:04:02 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;
		9	use Opcode;
		10	use Safe;
		11	use Safe::Hole;
6		12
7	use strict;	13	use Coro 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
8		19
9	our %COMMAND;	20	use Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.31 ();
		23	use YAML::Syck ();
		24	use Time::HiRes;
		25
		26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
		27
		28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		29	$YAML::Syck::ImplicitUnicode = 1;
		30
		31	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
		35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
10	our @EVENT;	39	our @EVENT;
11	our %PROP_TYPE;	40	our $LIBDIR = datadir . "/ext";
12	our %PROP_IDX;	41
		42	our $TICK = MAX_TIME * 1e-6;
		43	our $TICK_WATCHER;
		44	our $NEXT_TICK;
		45	our $NOW;
		46
		47	our %CFG;
		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $RANDOM_MAPS = cf::localdir . "/random";
		55	our %EXT_CORO;
		56
		57	binmode STDOUT;
		58	binmode STDERR;
		59
		60	# read virtual server time, if available
		61	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		62	open my $fh, "<", cf::localdir . "/runtime"
		63	or die "unable to read runtime file: $!";
		64	$RUNTIME = <$fh> + 0.;
		65	}
		66
		67	mkdir cf::localdir;
		68	mkdir cf::localdir . "/" . cf::playerdir;
		69	mkdir cf::localdir . "/" . cf::tmpdir;
		70	mkdir cf::localdir . "/" . cf::uniquedir;
		71	mkdir $RANDOM_MAPS;
		72
		73	# a special map that is always available
		74	our $LINK_MAP;
		75	our $EMERGENCY_POSITION;
		76
		77	#############################################################################
		78
		79	=head2 GLOBAL VARIABLES
		80
		81	=over 4
		82
		83	=item $cf::UPTIME
		84
		85	The timestamp of the server start (so not actually an uptime).
		86
		87	=item $cf::RUNTIME
		88
		89	The time this server has run, starts at 0 and is increased by $cf::TICK on
		90	every server tick.
		91
		92	=item $cf::LIBDIR
		93
		94	The perl library directory, where extensions and cf-specific modules can
		95	be found. It will be added to C<@INC> automatically.
		96
		97	=item $cf::NOW
		98
		99	The time of the last (current) server tick.
		100
		101	=item $cf::TICK
		102
		103	The interval between server ticks, in seconds.
		104
		105	=item %cf::CFG
		106
		107	Configuration for the server, loaded from C</etc/crossfire/config>, or
		108	from wherever your confdir points to.
		109
		110	=back
		111
		112	=cut
13		113
14	BEGIN {	114	BEGIN {
15	@EVENT = map lc, @EVENT;
16
17	*CORE::GLOBAL::warn = sub {	115	*CORE::GLOBAL::warn = sub {
18	my $msg = join "", @_;	116	my $msg = join "", @_;
		117	utf8::encode $msg;
		118
19	$msg .= "\n"	119	$msg .= "\n"
20	unless $msg =~ /\n$/;	120	unless $msg =~ /\n$/;
21		121
22	print STDERR "cfperl: $msg";
23	LOG llevError, "cfperl: $msg";	122	LOG llevError, "cfperl: $msg";
24	};	123	};
25	}	124	}
26		125
27	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	126	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		127	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		128	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		129	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		130	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		131	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
28		132
29	# generate property mutators	133	# we bless all objects into (empty) derived classes to force a method lookup
30	sub prop_gen {	134	# within the Safe compartment.
31	my ($prefix, $class) = @_;	135	for my $pkg (qw(
32		136	cf::global cf::attachable
		137	cf::object cf::object::player
		138	cf::client cf::player
		139	cf::arch cf::living
		140	cf::map cf::party cf::region
		141	)) {
33	no strict 'refs';	142	no strict 'refs';
34		143	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
35	for my $prop (keys %PROP_TYPE) {
36	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
37	my $sub = lc $1;
38
39	my $type = $PROP_TYPE{$prop};
40	my $idx = $PROP_IDX {$prop};
41
42	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
43	$_[0]->get_property ($type, $idx)
44	};
45
46	*{"$class\::set_$sub"} = sub {
47	$_[0]->set_property ($type, $idx, $_[1]);
48	} unless $ignore_set{$prop};
49	}
50	}	144	}
51		145
52	# auto-generate most of the API	146	$Event::DIED = sub {
53		147	warn "error in event callback: @_";
54	prop_gen OBJECT_PROP => "cf::object";	148	};
55	# CFAPI_OBJECT_ANIMATION?
56	prop_gen PLAYER_PROP => "cf::object::player";
57
58	prop_gen MAP_PROP => "cf::map";
59	prop_gen ARCH_PROP => "cf::arch";
60
61	# guessed hierarchies
62
63	@cf::object::player::ISA = 'cf::object';
64	@cf::object::map::ISA = 'cf::object';
65		149
66	my %ext_pkg;	150	my %ext_pkg;
67	my @exts;	151	my @exts;
68	my @hook;	152	my @hook;
69	my %command;
70		153
71	sub inject_event {	154	=head2 UTILITY FUNCTIONS
		155
		156	=over 4
		157
		158	=cut
		159
		160	use JSON::Syck (); # TODO# replace by JSON::PC once working
		161
		162	=item $ref = cf::from_json $json
		163
		164	Converts a JSON string into the corresponding perl data structure.
		165
		166	=cut
		167
		168	sub from_json($) {
		169	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		170	JSON::Syck::Load $_[0]
		171	}
		172
		173	=item $json = cf::to_json $ref
		174
		175	Converts a perl data structure into its JSON representation.
		176
		177	=cut
		178
		179	sub to_json($) {
		180	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		181	JSON::Syck::Dump $_[0]
		182	}
		183
		184	=item cf::lock_wait $string
		185
		186	Wait until the given lock is available. See cf::lock_acquire.
		187
		188	=item my $lock = cf::lock_acquire $string
		189
		190	Wait until the given lock is available and then acquires it and returns
		191	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		192	for example when the coroutine gets canceled), the lock is automatically
		193	returned.
		194
		195	Lock names should begin with a unique identifier (for example, cf::map::find
		196	uses map_find and cf::map::load uses map_load).
		197
		198	=cut
		199
		200	our %LOCK;
		201
		202	sub lock_wait($) {
72	my ($data) = @_;	203	my ($key) = @_;
73		204
74	my $cb = $hook[$data->{event_code}]{$data->{extension}}	205	# wait for lock, if any
		206	while ($LOCK{$key}) {
		207	push @{ $LOCK{$key} }, $Coro::current;
		208	Coro::schedule;
		209	}
		210	}
		211
		212	sub lock_acquire($) {
		213	my ($key) = @_;
		214
		215	# wait, to be sure we are not locked
		216	lock_wait $key;
		217
		218	$LOCK{$key} = [];
		219
		220	Coro::guard {
		221	# wake up all waiters, to be on the safe side
		222	$_->ready for @{ delete $LOCK{$key} };
		223	}
		224	}
		225
		226	sub freeze_mainloop {
		227	return unless $TICK_WATCHER->is_active;
		228
		229	my $guard = Coro::guard { $TICK_WATCHER->start };
		230	$TICK_WATCHER->stop;
		231	$guard
		232	}
		233
		234	=item cf::async { BLOCK }
		235
		236	Currently the same as Coro::async_pool, meaning you cannot use
		237	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		238	thing you are allowed to do is call C<prio> on it.
		239
		240	=cut
		241
		242	BEGIN { *async = \&Coro::async_pool }
		243
		244	=item cf::sync_job { BLOCK }
		245
		246	The design of crossfire+ requires that the main coro ($Coro::main) is
		247	always able to handle events or runnable, as crossfire+ is only partly
		248	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		249
		250	If it must be done, put the blocking parts into C<sync_job>. This will run
		251	the given BLOCK in another coroutine while waiting for the result. The
		252	server will be frozen during this time, so the block should either finish
		253	fast or be very important.
		254
		255	=cut
		256
		257	sub sync_job(&) {
		258	my ($job) = @_;
		259
		260	if ($Coro::current == $Coro::main) {
		261	# this is the main coro, too bad, we have to block
		262	# till the operation succeeds, freezing the server :/
		263
		264	# TODO: use suspend/resume instead
		265	# (but this is cancel-safe)
		266	my $freeze_guard = freeze_mainloop;
		267
		268	my $busy = 1;
		269	my @res;
		270
		271	(async {
		272	@res = eval { $job->() };
		273	warn $@ if $@;
		274	undef $busy;
		275	})->prio (Coro::PRIO_MAX);
		276
		277	while ($busy) {
		278	unless (Coro::cede) {
		279	Coro::nready ? Event::one_event 0 : Event::one_event;
		280	Coro::cede_notself unless Coro::cede;
		281	}
		282	}
		283
		284	wantarray ? @res : $res[0]
		285	} else {
		286	# we are in another coroutine, how wonderful, everything just works
		287
		288	$job->()
		289	}
		290	}
		291
		292	=item $coro = cf::async_ext { BLOCK }
		293
		294	Like async, but this coro is automcatially being canceled when the
		295	extension calling this is being unloaded.
		296
		297	=cut
		298
		299	sub async_ext(&) {
		300	my $cb = shift;
		301
		302	my $coro = &Coro::async ($cb);
		303
		304	$coro->on_destroy (sub {
		305	delete $EXT_CORO{$coro+0};
		306	});
		307	$EXT_CORO{$coro+0} = $coro;
		308
		309	$coro
		310	}
		311
		312	sub write_runtime {
		313	my $runtime = cf::localdir . "/runtime";
		314
		315	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
75	or return;	316	or return;
76		317
77	$cb->($data)	318	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
78	}	319	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		320	and return;
79		321
80	sub inject_global_event {	322	aio_fsync $fh
81	my ($data) = @_;	323	and return;
82		324
83	my $cb = $hook[$data->{event_code}]	325	close $fh
84	or return;	326	or return;
85		327
86	$_->($data) for values %$cb;	328	aio_rename "$runtime~", $runtime
		329	and return;
87		330
88	()
89	}
90
91	sub inject_command {
92	my ($name, $obj, $params) = @_;
93
94	for my $cmd (@{ $command{$name} }) {
95	$cmd->[1]->($obj, $params);
96	}
97
98	-1	331	1
99	}	332	}
		333
		334	=back
		335
		336	=cut
		337
		338	#############################################################################
		339
		340	package cf::path;
		341
		342	sub new {
		343	my ($class, $path, $base) = @_;
		344
		345	$path = $path->as_string if ref $path;
		346
		347	my $self = bless { }, $class;
		348
		349	# {... are special paths that are not touched
		350	# ?xxx/... are special absolute paths
		351	# ?random/... random maps
		352	# /! non-realised random map exit
		353	# /... normal maps
		354	# ~/... per-player maps without a specific player (DO NOT USE)
		355	# ~user/... per-player map of a specific user
		356
		357	if ($path =~ /^{/) {
		358	# fine as it is
		359	} elsif ($path =~ s{^\?random/}{}) {
		360	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		361	$self->{random} = cf::from_json $data;
		362	} else {
		363	if ($path =~ s{^~([^/]+)?}{}) {
		364	$self->{user_rel} = 1;
		365
		366	if (defined $1) {
		367	$self->{user} = $1;
		368	} elsif ($base =~ m{^~([^/]+)/}) {
		369	$self->{user} = $1;
		370	} else {
		371	warn "cannot resolve user-relative path without user <$path,$base>\n";
		372	}
		373	} elsif ($path =~ /^\//) {
		374	# already absolute
		375	} else {
		376	$base =~ s{[^/]+/?$}{};
		377	return $class->new ("$base/$path");
		378	}
		379
		380	for ($path) {
		381	redo if s{/\.?/}{/};
		382	redo if s{/[^/]+/\.\./}{/};
		383	}
		384	}
		385
		386	$self->{path} = $path;
		387
		388	$self
		389	}
		390
		391	# the name / primary key / in-game path
		392	sub as_string {
		393	my ($self) = @_;
		394
		395	$self->{user_rel} ? "~$self->{user}$self->{path}"
		396	: $self->{random} ? "?random/$self->{path}"
		397	: $self->{path}
		398	}
		399
		400	# the displayed name, this is a one way mapping
		401	sub visible_name {
		402	my ($self) = @_;
		403
		404	# if (my $rmp = $self->{random}) {
		405	# # todo: be more intelligent about this
		406	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		407	# } else {
		408	$self->as_string
		409	# }
		410	}
		411
		412	# escape the /'s in the path
		413	sub _escaped_path {
		414	# ∕ is U+2215
		415	(my $path = $_[0]{path}) =~ s/\//∕/g;
		416	$path
		417	}
		418
		419	# the original (read-only) location
		420	sub load_path {
		421	my ($self) = @_;
		422
		423	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		424	}
		425
		426	# the temporary/swap location
		427	sub save_path {
		428	my ($self) = @_;
		429
		430	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		431	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		432	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		433	}
		434
		435	# the unique path, might be eq to save_path
		436	sub uniq_path {
		437	my ($self) = @_;
		438
		439	$self->{user_rel} || $self->{random}
		440	? undef
		441	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		442	}
		443
		444	# return random map parameters, or undef
		445	sub random_map_params {
		446	my ($self) = @_;
		447
		448	$self->{random}
		449	}
		450
		451	# this is somewhat ugly, but style maps do need special treatment
		452	sub is_style_map {
		453	$_[0]{path} =~ m{^/styles/}
		454	}
		455
		456	package cf;
		457
		458	#############################################################################
		459
		460	=head2 ATTACHABLE OBJECTS
		461
		462	Many objects in crossfire are so-called attachable objects. That means you can
		463	attach callbacks/event handlers (a collection of which is called an "attachment")
		464	to it. All such attachable objects support the following methods.
		465
		466	In the following description, CLASS can be any of C<global>, C<object>
		467	C<player>, C<client> or C<map> (i.e. the attachable objects in
		468	crossfire+).
		469
		470	=over 4
		471
		472	=item $attachable->attach ($attachment, key => $value...)
		473
		474	=item $attachable->detach ($attachment)
		475
		476	Attach/detach a pre-registered attachment to a specific object and give it
		477	the specified key/value pairs as arguments.
		478
		479	Example, attach a minesweeper attachment to the given object, making it a
		480	10x10 minesweeper game:
		481
		482	$obj->attach (minesweeper => width => 10, height => 10);
		483
		484	=item $bool = $attachable->attached ($name)
		485
		486	Checks wether the named attachment is currently attached to the object.
		487
		488	=item cf::CLASS->attach ...
		489
		490	=item cf::CLASS->detach ...
		491
		492	Define an anonymous attachment and attach it to all objects of the given
		493	CLASS. See the next function for an explanation of its arguments.
		494
		495	You can attach to global events by using the C<cf::global> class.
		496
		497	Example, log all player logins:
		498
		499	cf::player->attach (
		500	on_login => sub {
		501	my ($pl) = @_;
		502	...
		503	},
		504	);
		505
		506	Example, attach to the jeweler skill:
		507
		508	cf::object->attach (
		509	type => cf::SKILL,
		510	subtype => cf::SK_JEWELER,
		511	on_use_skill => sub {
		512	my ($sk, $ob, $part, $dir, $msg) = @_;
		513	...
		514	},
		515	);
		516
		517	=item cf::CLASS::attachment $name, ...
		518
		519	Register an attachment by C<$name> through which attachable objects of the
		520	given CLASS can refer to this attachment.
		521
		522	Some classes such as crossfire maps and objects can specify attachments
		523	that are attached at load/instantiate time, thus the need for a name.
		524
		525	These calls expect any number of the following handler/hook descriptions:
		526
		527	=over 4
		528
		529	=item prio => $number
		530
		531	Set the priority for all following handlers/hooks (unless overwritten
		532	by another C<prio> setting). Lower priority handlers get executed
		533	earlier. The default priority is C<0>, and many built-in handlers are
		534	registered at priority C<-1000>, so lower priorities should not be used
		535	unless you know what you are doing.
		536
		537	=item type => $type
		538
		539	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		540	given type of objects only (the additional parameter C<subtype> can be
		541	used to further limit to the given subtype).
		542
		543	=item on_I<event> => \&cb
		544
		545	Call the given code reference whenever the named event happens (event is
		546	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		547	handlers are recognised generally depends on the type of object these
		548	handlers attach to).
		549
		550	See F<include/eventinc.h> for the full list of events supported, and their
		551	class.
		552
		553	=item package => package::
		554
		555	Look for sub functions of the name C<< on_I<event> >> in the given
		556	package and register them. Only handlers for eevents supported by the
		557	object/class are recognised.
		558
		559	=back
		560
		561	Example, define an attachment called "sockpuppet" that calls the given
		562	event handler when a monster attacks:
		563
		564	cf::object::attachment sockpuppet =>
		565	on_skill_attack => sub {
		566	my ($self, $victim) = @_;
		567	...
		568	}
		569	}
		570
		571	=item $attachable->valid
		572
		573	Just because you have a perl object does not mean that the corresponding
		574	C-level object still exists. If you try to access an object that has no
		575	valid C counterpart anymore you get an exception at runtime. This method
		576	can be used to test for existence of the C object part without causing an
		577	exception.
		578
		579	=cut
		580
		581	# the following variables are defined in .xs and must not be re-created
		582	our @CB_GLOBAL = (); # registry for all global events
		583	our @CB_ATTACHABLE = (); # registry for all attachables
		584	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		585	our @CB_PLAYER = ();
		586	our @CB_CLIENT = ();
		587	our @CB_TYPE = (); # registry for type (cf-object class) based events
		588	our @CB_MAP = ();
		589
		590	my %attachment;
		591
		592	sub _attach_cb($$$$) {
		593	my ($registry, $event, $prio, $cb) = @_;
		594
		595	use sort 'stable';
		596
		597	$cb = [$prio, $cb];
		598
		599	@{$registry->[$event]} = sort
		600	{ $a->[0] cmp $b->[0] }
		601	@{$registry->[$event] || []}, $cb;
		602	}
		603
		604	# hack
		605	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		606
		607	# attach handles attaching event callbacks
		608	# the only thing the caller has to do is pass the correct
		609	# registry (== where the callback attaches to).
		610	sub _attach {
		611	my ($registry, $klass, @arg) = @_;
		612
		613	my $object_type;
		614	my $prio = 0;
		615	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		616
		617	#TODO: get rid of this hack
		618	if ($attachable_klass{$klass}) {
		619	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		620	}
		621
		622	while (@arg) {
		623	my $type = shift @arg;
		624
		625	if ($type eq "prio") {
		626	$prio = shift @arg;
		627
		628	} elsif ($type eq "type") {
		629	$object_type = shift @arg;
		630	$registry = $CB_TYPE[$object_type] ||= [];
		631
		632	} elsif ($type eq "subtype") {
		633	defined $object_type or Carp::croak "subtype specified without type";
		634	my $object_subtype = shift @arg;
		635	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		636
		637	} elsif ($type eq "package") {
		638	my $pkg = shift @arg;
		639
		640	while (my ($name, $id) = each %cb_id) {
		641	if (my $cb = $pkg->can ($name)) {
		642	_attach_cb $registry, $id, $prio, $cb;
		643	}
		644	}
		645
		646	} elsif (exists $cb_id{$type}) {
		647	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		648
		649	} elsif (ref $type) {
		650	warn "attaching objects not supported, ignoring.\n";
		651
		652	} else {
		653	shift @arg;
		654	warn "attach argument '$type' not supported, ignoring.\n";
		655	}
		656	}
		657	}
		658
		659	sub _object_attach {
		660	my ($obj, $name, %arg) = @_;
		661
		662	return if exists $obj->{_attachment}{$name};
		663
		664	if (my $attach = $attachment{$name}) {
		665	my $registry = $obj->registry;
		666
		667	for (@$attach) {
		668	my ($klass, @attach) = @$_;
		669	_attach $registry, $klass, @attach;
		670	}
		671
		672	$obj->{$name} = \%arg;
		673	} else {
		674	warn "object uses attachment '$name' that is not available, postponing.\n";
		675	}
		676
		677	$obj->{_attachment}{$name} = undef;
		678	}
		679
		680	sub cf::attachable::attach {
		681	if (ref $_[0]) {
		682	_object_attach @_;
		683	} else {
		684	_attach shift->_attach_registry, @_;
		685	}
		686	};
		687
		688	# all those should be optimised
		689	sub cf::attachable::detach {
		690	my ($obj, $name) = @_;
		691
		692	if (ref $obj) {
		693	delete $obj->{_attachment}{$name};
		694	reattach ($obj);
		695	} else {
		696	Carp::croak "cannot, currently, detach class attachments";
		697	}
		698	};
		699
		700	sub cf::attachable::attached {
		701	my ($obj, $name) = @_;
		702
		703	exists $obj->{_attachment}{$name}
		704	}
		705
		706	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		707	eval "#line " . __LINE__ . " 'cf.pm'
		708	sub cf::\L$klass\E::_attach_registry {
		709	(\\\@CB_$klass, KLASS_$klass)
		710	}
		711
		712	sub cf::\L$klass\E::attachment {
		713	my \$name = shift;
		714
		715	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		716	}
		717	";
		718	die if $@;
		719	}
		720
		721	our $override;
		722	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		723
		724	sub override {
		725	$override = 1;
		726	@invoke_results = ();
		727	}
		728
		729	sub do_invoke {
		730	my $event = shift;
		731	my $callbacks = shift;
		732
		733	@invoke_results = ();
		734
		735	local $override;
		736
		737	for (@$callbacks) {
		738	eval { &{$_->[1]} };
		739
		740	if ($@) {
		741	warn "$@";
		742	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		743	override;
		744	}
		745
		746	return 1 if $override;
		747	}
		748
		749	0
		750	}
		751
		752	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		753
		754	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		755
		756	Generate an object-specific event with the given arguments.
		757
		758	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		759	removed in future versions), and there is no public API to access override
		760	results (if you must, access C<@cf::invoke_results> directly).
		761
		762	=back
		763
		764	=cut
		765
		766	#############################################################################
		767	# object support
		768
		769	sub reattach {
		770	# basically do the same as instantiate, without calling instantiate
		771	my ($obj) = @_;
		772
		773	my $registry = $obj->registry;
		774
		775	@$registry = ();
		776
		777	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		778
		779	for my $name (keys %{ $obj->{_attachment} || {} }) {
		780	if (my $attach = $attachment{$name}) {
		781	for (@$attach) {
		782	my ($klass, @attach) = @$_;
		783	_attach $registry, $klass, @attach;
		784	}
		785	} else {
		786	warn "object uses attachment '$name' that is not available, postponing.\n";
		787	}
		788	}
		789	}
		790
		791	cf::attachable->attach (
		792	prio => -1000000,
		793	on_instantiate => sub {
		794	my ($obj, $data) = @_;
		795
		796	$data = from_json $data;
		797
		798	for (@$data) {
		799	my ($name, $args) = @$_;
		800
		801	$obj->attach ($name, %{$args || {} });
		802	}
		803	},
		804	on_reattach => \&reattach,
		805	on_clone => sub {
		806	my ($src, $dst) = @_;
		807
		808	@{$dst->registry} = @{$src->registry};
		809
		810	%$dst = %$src;
		811
		812	%{$dst->{_attachment}} = %{$src->{_attachment}}
		813	if exists $src->{_attachment};
		814	},
		815	);
		816
		817	sub object_freezer_save {
		818	my ($filename, $rdata, $objs) = @_;
		819
		820	sync_job {
		821	if (length $$rdata) {
		822	warn sprintf "saving %s (%d,%d)\n",
		823	$filename, length $$rdata, scalar @$objs;
		824
		825	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		826	chmod SAVE_MODE, $fh;
		827	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		828	aio_fsync $fh;
		829	close $fh;
		830
		831	if (@$objs) {
		832	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		833	chmod SAVE_MODE, $fh;
		834	my $data = Storable::nfreeze { version => 1, objs => $objs };
		835	aio_write $fh, 0, (length $data), $data, 0;
		836	aio_fsync $fh;
		837	close $fh;
		838	aio_rename "$filename.pst~", "$filename.pst";
		839	}
		840	} else {
		841	aio_unlink "$filename.pst";
		842	}
		843
		844	aio_rename "$filename~", $filename;
		845	} else {
		846	warn "FATAL: $filename~: $!\n";
		847	}
		848	} else {
		849	aio_unlink $filename;
		850	aio_unlink "$filename.pst";
		851	}
		852	}
		853	}
		854
		855	sub object_freezer_as_string {
		856	my ($rdata, $objs) = @_;
		857
		858	use Data::Dumper;
		859
		860	$$rdata . Dumper $objs
		861	}
		862
		863	sub object_thawer_load {
		864	my ($filename) = @_;
		865
		866	my ($data, $av);
		867
		868	(aio_load $filename, $data) >= 0
		869	or return;
		870
		871	unless (aio_stat "$filename.pst") {
		872	(aio_load "$filename.pst", $av) >= 0
		873	or return;
		874	$av = eval { (Storable::thaw $av)->{objs} };
		875	}
		876
		877	warn sprintf "loading %s (%d)\n",
		878	$filename, length $data, scalar @{$av || []};#d#
		879	return ($data, $av);
		880	}
		881
		882	#############################################################################
		883	# command handling &c
		884
		885	=item cf::register_command $name => \&callback($ob,$args);
		886
		887	Register a callback for execution when the client sends the user command
		888	$name.
		889
		890	=cut
100		891
101	sub register_command {	892	sub register_command {
102	my ($name, $time, $cb) = @_;	893	my ($name, $cb) = @_;
103		894
104	my $caller = caller;	895	my $caller = caller;
105
106	warn "registering command '$name/$time' to '$caller'";	896	#warn "registering command '$name/$time' to '$caller'";
107		897
108	push @{ $command{$name} }, [$time, $cb, $caller];	898	push @{ $COMMAND{$name} }, [$caller, $cb];
109	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
110	}	899	}
		900
		901	=item cf::register_extcmd $name => \&callback($pl,$packet);
		902
		903	Register a callbackf ro execution when the client sends an extcmd packet.
		904
		905	If the callback returns something, it is sent back as if reply was being
		906	called.
		907
		908	=cut
		909
		910	sub register_extcmd {
		911	my ($name, $cb) = @_;
		912
		913	my $caller = caller;
		914	#warn "registering extcmd '$name' to '$caller'";
		915
		916	$EXTCMD{$name} = [$cb, $caller];
		917	}
		918
		919	cf::player->attach (
		920	on_command => sub {
		921	my ($pl, $name, $params) = @_;
		922
		923	my $cb = $COMMAND{$name}
		924	or return;
		925
		926	for my $cmd (@$cb) {
		927	$cmd->[1]->($pl->ob, $params);
		928	}
		929
		930	cf::override;
		931	},
		932	on_extcmd => sub {
		933	my ($pl, $buf) = @_;
		934
		935	my $msg = eval { from_json $buf };
		936
		937	if (ref $msg) {
		938	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		939	if (my %reply = $cb->[0]->($pl, $msg)) {
		940	$pl->ext_reply ($msg->{msgid}, %reply);
		941	}
		942	}
		943	} else {
		944	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		945	}
		946
		947	cf::override;
		948	},
		949	);
111		950
112	sub register {	951	sub register {
113	my ($base, $pkg) = @_;	952	my ($base, $pkg) = @_;
114		953
115	for my $idx (0 .. $#EVENT) {	954	#TODO
116	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
117	warn "registering $EVENT[$idx] hook to '$pkg'\n";
118	$hook[$idx]{$base} = $ref;
119	}
120	}
121	}	955	}
122		956
123	sub load_extension {	957	sub load_extension {
124	my ($path) = @_;	958	my ($path) = @_;
125		959
126	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	960	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
127	my $base = $1;	961	my $base = $1;
128	my $pkg = $1;	962	my $pkg = $1;
129	$pkg =~ s/[^[:word:]]/_/g;	963	$pkg =~ s/[^[:word:]]/_/g;
130	$pkg = "cf::ext::$pkg";	964	$pkg = "ext::$pkg";
131		965
132	warn "loading '$path' into '$pkg'\n";	966	warn "loading '$path' into '$pkg'\n";
133		967
134	open my $fh, "<:utf8", $path	968	open my $fh, "<:utf8", $path
135	or die "$path: $!";	969	or die "$path: $!";
…		…
139	. "#line 1 \"$path\"\n{\n"	973	. "#line 1 \"$path\"\n{\n"
140	. (do { local $/; <$fh> })	974	. (do { local $/; <$fh> })
141	. "\n};\n1";	975	. "\n};\n1";
142		976
143	eval $source	977	eval $source
144	or die "$path: $@";	978	or die $@ ? "$path: $@\n"
		979	: "extension disabled.\n";
145		980
146	push @exts, $pkg;	981	push @exts, $pkg;
147	$ext_pkg{$base} = $pkg;	982	$ext_pkg{$base} = $pkg;
148		983
149	# no strict 'refs';	984	# no strict 'refs';
150	# @{"$pkg\::ISA"} = cf::ext::;	985	# @{"$pkg\::ISA"} = ext::;
151		986
152	register $base, $pkg;	987	register $base, $pkg;
153	}	988	}
154		989
155	sub unload_extension {	990	sub unload_extension {
156	my ($pkg) = @_;	991	my ($pkg) = @_;
157		992
158	warn "removing extension $pkg\n";	993	warn "removing extension $pkg\n";
159		994
160	# remove hooks	995	# remove hooks
		996	#TODO
161	for my $idx (0 .. $#EVENT) {	997	# for my $idx (0 .. $#PLUGIN_EVENT) {
162	delete $hook[$idx]{$pkg};	998	# delete $hook[$idx]{$pkg};
163	}	999	# }
164		1000
165	# remove commands	1001	# remove commands
166	for my $name (keys %command) {	1002	for my $name (keys %COMMAND) {
167	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1003	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
168		1004
169	if (@cb) {	1005	if (@cb) {
170	$command{$name} = \@cb;	1006	$COMMAND{$name} = \@cb;
171	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
172	} else {	1007	} else {
173	delete $command{$name};
174	delete $COMMAND{"$name\000"};	1008	delete $COMMAND{$name};
175	}	1009	}
		1010	}
		1011
		1012	# remove extcmds
		1013	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
		1014	delete $EXTCMD{$name};
		1015	}
		1016
		1017	if (my $cb = $pkg->can ("unload")) {
		1018	eval {
		1019	$cb->($pkg);
		1020	1
		1021	} or warn "$pkg unloaded, but with errors: $@";
176	}	1022	}
177		1023
178	Symbol::delete_package $pkg;	1024	Symbol::delete_package $pkg;
179	}	1025	}
180		1026
181	sub load_extensions {	1027	sub load_extensions {
182	my $LIBDIR = maps_directory "perl";
183
184	for my $ext (<$LIBDIR/*.ext>) {	1028	for my $ext (<$LIBDIR/*.ext>) {
185	next unless -r $ext;	1029	next unless -r $ext;
186	eval {	1030	eval {
187	load_extension $ext;	1031	load_extension $ext;
188	1	1032	1
189	} or warn "$ext not loaded: $@";	1033	} or warn "$ext not loaded: $@";
190	}	1034	}
191	}	1035	}
192		1036
193	register_command "perl-reload", 0, sub {	1037	#############################################################################
		1038	# load/save/clean perl data associated with a map
		1039
		1040	*cf::mapsupport::on_clean = sub {
		1041	my ($map) = @_;
		1042
		1043	my $path = $map->tmpname;
		1044	defined $path or return;
		1045
		1046	unlink "$path.pst";
		1047	};
		1048
		1049	cf::map->attach (prio => -10000, package => cf::mapsupport::);
		1050
		1051	#############################################################################
		1052	# load/save perl data associated with player->ob objects
		1053
		1054	sub all_objects(@) {
		1055	@_, map all_objects ($_->inv), @_
		1056	}
		1057
		1058	# TODO: compatibility cruft, remove when no longer needed
		1059	cf::player->attach (
		1060	on_load => sub {
		1061	my ($pl, $path) = @_;
		1062
		1063	for my $o (all_objects $pl->ob) {
		1064	if (my $value = $o->get_ob_key_value ("_perl_data")) {
		1065	$o->set_ob_key_value ("_perl_data");
		1066
		1067	%$o = %{ Storable::thaw pack "H*", $value };
		1068	}
		1069	}
		1070	},
		1071	);
		1072
		1073	#############################################################################
		1074
		1075	=head2 CORE EXTENSIONS
		1076
		1077	Functions and methods that extend core crossfire objects.
		1078
		1079	=head3 cf::player
		1080
		1081	=over 4
		1082
		1083	=item cf::player::exists $login
		1084
		1085	Returns true when the given account exists.
		1086
		1087	=cut
		1088
		1089	sub cf::player::exists($) {
		1090	cf::player::find $_[0]
		1091	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
		1092	}
		1093
		1094	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1095
		1096	Sends an ext reply to the player.
		1097
		1098	=cut
		1099
		1100	sub cf::player::ext_reply($$$%) {
		1101	my ($self, $id, %msg) = @_;
		1102
		1103	$msg{msgid} = $id;
		1104
		1105	$self->send ("ext " . to_json \%msg);
		1106	}
		1107
		1108	=back
		1109
		1110
		1111	=head3 cf::map
		1112
		1113	=over 4
		1114
		1115	=cut
		1116
		1117	package cf::map;
		1118
		1119	use Fcntl;
		1120	use Coro::AIO;
		1121
		1122	our $MAX_RESET = 3600;
		1123	our $DEFAULT_RESET = 3000;
		1124
		1125	sub generate_random_map {
194	my ($who, $arg) = @_;	1126	my ($path, $rmp) = @_;
195		1127
196	if ($who->flag (FLAG_WIZ)) {	1128	# mit "rum" bekleckern, nicht
197	$who->message ("reloading...");	1129	cf::map::_create_random_map
		1130	$path,
		1131	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1132	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1133	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1134	$rmp->{exit_on_final_map},
		1135	$rmp->{xsize}, $rmp->{ysize},
		1136	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1137	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1138	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1139	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1140	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1141	(cf::region::find $rmp->{region})
		1142	}
198		1143
199	warn "reloading...\n";	1144	# and all this just because we cannot iterate over
		1145	# all maps in C++...
		1146	sub change_all_map_light {
		1147	my ($change) = @_;
		1148
		1149	$_->change_map_light ($change)
		1150	for grep $_->outdoor, values %cf::MAP;
		1151	}
		1152
		1153	sub try_load_header($) {
		1154	my ($path) = @_;
		1155
		1156	utf8::encode $path;
		1157	aio_open $path, O_RDONLY, 0
		1158	or return;
		1159
		1160	my $map = cf::map::new
		1161	or return;
		1162
		1163	# for better error messages only, will be overwritten
		1164	$map->path ($path);
		1165
		1166	$map->load_header ($path)
		1167	or return;
		1168
		1169	$map->{load_path} = $path;
		1170
		1171	$map
		1172	}
		1173
		1174	sub find;
		1175	sub find {
		1176	my ($path, $origin) = @_;
		1177
		1178	#warn "find<$path,$origin>\n";#d#
		1179
		1180	$path = new cf::path $path, $origin && $origin->path;
		1181	my $key = $path->as_string;
		1182
		1183	cf::lock_wait "map_find:$key";
		1184
		1185	$cf::MAP{$key} || do {
		1186	my $guard = cf::lock_acquire "map_find:$key";
		1187
		1188	# do it the slow way
		1189	my $map = try_load_header $path->save_path;
		1190
		1191	Coro::cede;
		1192
		1193	if ($map) {
		1194	$map->last_access ((delete $map->{last_access})
		1195	|| $cf::RUNTIME); #d#
		1196	# safety
		1197	$map->{instantiate_time} = $cf::RUNTIME
		1198	if $map->{instantiate_time} > $cf::RUNTIME;
		1199	} else {
		1200	if (my $rmp = $path->random_map_params) {
		1201	$map = generate_random_map $key, $rmp;
		1202	} else {
		1203	$map = try_load_header $path->load_path;
		1204	}
		1205
		1206	$map or return;
		1207
		1208	$map->{load_original} = 1;
		1209	$map->{instantiate_time} = $cf::RUNTIME;
		1210	$map->last_access ($cf::RUNTIME);
		1211	$map->instantiate;
		1212
		1213	# per-player maps become, after loading, normal maps
		1214	$map->per_player (0) if $path->{user_rel};
		1215	}
		1216
		1217	$map->path ($key);
		1218	$map->{path} = $path;
		1219	$map->{last_save} = $cf::RUNTIME;
		1220
		1221	Coro::cede;
		1222
		1223	if ($map->should_reset) {
		1224	$map->reset;
		1225	undef $guard;
		1226	$map = find $path
		1227	or return;
		1228	}
		1229
		1230	$cf::MAP{$key} = $map
		1231	}
		1232	}
		1233
		1234	sub load {
		1235	my ($self) = @_;
		1236
		1237	my $path = $self->{path};
		1238	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1239
		1240	return if $self->in_memory != cf::MAP_SWAPPED;
		1241
		1242	$self->in_memory (cf::MAP_LOADING);
		1243
		1244	$self->alloc;
		1245	$self->load_objects ($self->{load_path}, 1)
		1246	or return;
		1247
		1248	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1249	if delete $self->{load_original};
		1250
		1251	if (my $uniq = $path->uniq_path) {
		1252	utf8::encode $uniq;
		1253	if (aio_open $uniq, O_RDONLY, 0) {
		1254	$self->clear_unique_items;
		1255	$self->load_objects ($uniq, 0);
		1256	}
		1257	}
		1258
		1259	Coro::cede;
		1260
		1261	# now do the right thing for maps
		1262	$self->link_multipart_objects;
		1263
		1264	if ($self->{path}->is_style_map) {
		1265	$self->{deny_save} = 1;
		1266	$self->{deny_reset} = 1;
		1267	} else {
		1268	$self->fix_auto_apply;
		1269	$self->decay_objects;
		1270	$self->update_buttons;
		1271	$self->set_darkness_map;
		1272	$self->difficulty ($self->estimate_difficulty)
		1273	unless $self->difficulty;
		1274	$self->activate;
		1275	}
		1276
		1277	Coro::cede;
		1278
		1279	$self->in_memory (cf::MAP_IN_MEMORY);
		1280	}
		1281
		1282	sub find_sync {
		1283	my ($path, $origin) = @_;
		1284
		1285	cf::sync_job { cf::map::find $path, $origin }
		1286	}
		1287
		1288	sub do_load_sync {
		1289	my ($map) = @_;
		1290
		1291	cf::sync_job { $map->load };
		1292	}
		1293
		1294	sub save {
		1295	my ($self) = @_;
		1296
		1297	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1298
		1299	$self->{last_save} = $cf::RUNTIME;
		1300
		1301	return unless $self->dirty;
		1302
		1303	my $save = $self->{path}->save_path; utf8::encode $save;
		1304	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1305
		1306	$self->{load_path} = $save;
		1307
		1308	return if $self->{deny_save};
		1309
		1310	local $self->{last_access} = $self->last_access;#d#
		1311
		1312	if ($uniq) {
		1313	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1314	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1315	} else {
		1316	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1317	}
		1318	}
		1319
		1320	sub swap_out {
		1321	my ($self) = @_;
		1322
		1323	# save first because save cedes
		1324	$self->save;
		1325
		1326	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1327
		1328	return if $self->players;
		1329	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1330	return if $self->{deny_save};
		1331
		1332	$self->clear;
		1333	$self->in_memory (cf::MAP_SWAPPED);
		1334	}
		1335
		1336	sub reset_at {
		1337	my ($self) = @_;
		1338
		1339	# TODO: safety, remove and allow resettable per-player maps
		1340	return 1e99 if $self->{path}{user_rel};
		1341	return 1e99 if $self->{deny_reset};
		1342
		1343	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1344	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1345
		1346	$time + $to
		1347	}
		1348
		1349	sub should_reset {
		1350	my ($self) = @_;
		1351
		1352	$self->reset_at <= $cf::RUNTIME
		1353	}
		1354
		1355	sub unlink_save {
		1356	my ($self) = @_;
		1357
		1358	utf8::encode (my $save = $self->{path}->save_path);
		1359	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1360	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1361	}
		1362
		1363	sub rename {
		1364	my ($self, $new_path) = @_;
		1365
		1366	$self->unlink_save;
		1367
		1368	delete $cf::MAP{$self->path};
		1369	$self->{path} = new cf::path $new_path;
		1370	$self->path ($self->{path}->as_string);
		1371	$cf::MAP{$self->path} = $self;
		1372
		1373	$self->save;
		1374	}
		1375
		1376	sub reset {
		1377	my ($self) = @_;
		1378
		1379	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1380
		1381	return if $self->players;
		1382	return if $self->{path}{user_rel};#d#
		1383
		1384	warn "resetting map ", $self->path;#d#
		1385
		1386	delete $cf::MAP{$self->path};
		1387
		1388	$_->clear_links_to ($self) for values %cf::MAP;
		1389
		1390	$self->unlink_save;
		1391	$self->destroy;
		1392	}
		1393
		1394	my $nuke_counter = "aaaa";
		1395
		1396	sub nuke {
		1397	my ($self) = @_;
		1398
		1399	$self->{deny_save} = 1;
		1400	$self->reset_timeout (1);
		1401	$self->rename ("{nuke}/" . ($nuke_counter++));
		1402	$self->reset; # polite request, might not happen
		1403	}
		1404
		1405	sub customise_for {
		1406	my ($map, $ob) = @_;
		1407
		1408	if ($map->per_player) {
		1409	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1410	}
		1411
		1412	$map
		1413	}
		1414
		1415	sub emergency_save {
		1416	my $freeze_guard = cf::freeze_mainloop;
		1417
		1418	warn "enter emergency map save\n";
		1419
		1420	cf::sync_job {
		1421	warn "begin emergency map save\n";
		1422	$_->save for values %cf::MAP;
		1423	};
		1424
		1425	warn "end emergency map save\n";
		1426	}
		1427
		1428	package cf;
		1429
		1430	=back
		1431
		1432
		1433	=head3 cf::object::player
		1434
		1435	=over 4
		1436
		1437	=item $player_object->reply ($npc, $msg[, $flags])
		1438
		1439	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
		1440	can be C<undef>. Does the right thing when the player is currently in a
		1441	dialogue with the given NPC character.
		1442
		1443	=cut
		1444
		1445	# rough implementation of a future "reply" method that works
		1446	# with dialog boxes.
		1447	#TODO: the first argument must go, split into a $npc->reply_to ( method
		1448	sub cf::object::player::reply($$$;$) {
		1449	my ($self, $npc, $msg, $flags) = @_;
		1450
		1451	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
		1452
		1453	if ($self->{record_replies}) {
		1454	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		1455	} else {
		1456	$msg = $npc->name . " says: $msg" if $npc;
		1457	$self->message ($msg, $flags);
		1458	}
		1459	}
		1460
		1461	=item $player_object->may ("access")
		1462
		1463	Returns wether the given player is authorized to access resource "access"
		1464	(e.g. "command_wizcast").
		1465
		1466	=cut
		1467
		1468	sub cf::object::player::may {
		1469	my ($self, $access) = @_;
		1470
		1471	$self->flag (cf::FLAG_WIZ) ||
		1472	(ref $cf::CFG{"may_$access"}
		1473	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1474	: $cf::CFG{"may_$access"})
		1475	}
		1476
		1477	=item $player_object->enter_link
		1478
		1479	Freezes the player and moves him/her to a special map (C<{link}>).
		1480
		1481	The player should be reaosnably safe there for short amounts of time. You
		1482	I<MUST> call C<leave_link> as soon as possible, though.
		1483
		1484	=item $player_object->leave_link ($map, $x, $y)
		1485
		1486	Moves the player out of the specila link map onto the given map. If the
		1487	map is not valid (or omitted), the player will be moved back to the
		1488	location he/she was before the call to C<enter_link>, or, if that fails,
		1489	to the emergency map position.
		1490
		1491	Might block.
		1492
		1493	=cut
		1494
		1495	sub cf::object::player::enter_link {
		1496	my ($self) = @_;
		1497
		1498	$self->deactivate_recursive;
		1499
		1500	return if $self->map == $LINK_MAP;
		1501
		1502	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1503	if $self->map;
		1504
		1505	$self->enter_map ($LINK_MAP, 20, 20);
		1506	}
		1507
		1508	sub cf::object::player::leave_link {
		1509	my ($self, $map, $x, $y) = @_;
		1510
		1511	my $link_pos = delete $self->{_link_pos};
		1512
		1513	unless ($map) {
		1514	# restore original map position
		1515	($map, $x, $y) = @{ $link_pos || [] };
		1516	$map = cf::map::find $map;
		1517
		1518	unless ($map) {
		1519	($map, $x, $y) = @$EMERGENCY_POSITION;
		1520	$map = cf::map::find $map
		1521	or die "FATAL: cannot load emergency map\n";
		1522	}
		1523	}
		1524
		1525	($x, $y) = (-1, -1)
		1526	unless (defined $x) && (defined $y);
		1527
		1528	# use -1 or undef as default coordinates, not 0, 0
		1529	($x, $y) = ($map->enter_x, $map->enter_y)
		1530	if $x <=0 && $y <= 0;
		1531
		1532	$map->load;
		1533
		1534	$self->activate_recursive;
		1535	$self->enter_map ($map, $x, $y);
		1536	}
		1537
		1538	cf::player->attach (
		1539	on_logout => sub {
		1540	my ($pl) = @_;
		1541
		1542	# abort map switching before logout
		1543	if ($pl->ob->{_link_pos}) {
		1544	cf::sync_job {
		1545	$pl->ob->leave_link
		1546	};
		1547	}
		1548	},
		1549	on_login => sub {
		1550	my ($pl) = @_;
		1551
		1552	# try to abort aborted map switching on player login :)
		1553	# should happen only on crashes
		1554	if ($pl->ob->{_link_pos}) {
		1555
		1556	$pl->ob->enter_link;
		1557	(async {
		1558	# we need this sleep as the login has a concurrent enter_exit running
		1559	# and this sleep increases chances of the player not ending up in scorn
		1560	$pl->ob->reply (undef,
		1561	"There was an internal problem at your last logout, "
		1562	. "the server will try to bring you to your intended destination in a second.",
		1563	cf::NDI_RED);
		1564	Coro::Timer::sleep 1;
		1565	$pl->ob->leave_link;
		1566	})->prio (2);
		1567	}
		1568	},
		1569	);
		1570
		1571	=item $player_object->goto ($path, $x, $y)
		1572
		1573	=cut
		1574
		1575	sub cf::object::player::goto {
		1576	my ($self, $path, $x, $y) = @_;
		1577
		1578	$self->enter_link;
		1579
		1580	(async {
		1581	$path = new cf::path $path;
		1582
		1583	my $map = cf::map::find $path->as_string;
		1584	$map = $map->customise_for ($self) if $map;
		1585
		1586	# warn "entering ", $map->path, " at ($x, $y)\n"
		1587	# if $map;
		1588
		1589	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1590
		1591	$self->leave_link ($map, $x, $y);
		1592	})->prio (1);
		1593	}
		1594
		1595	=item $player_object->enter_exit ($exit_object)
		1596
		1597	=cut
		1598
		1599	sub parse_random_map_params {
		1600	my ($spec) = @_;
		1601
		1602	my $rmp = { # defaults
		1603	xsize => 10,
		1604	ysize => 10,
		1605	};
		1606
		1607	for (split /\n/, $spec) {
		1608	my ($k, $v) = split /\s+/, $_, 2;
		1609
		1610	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1611	}
		1612
		1613	$rmp
		1614	}
		1615
		1616	sub prepare_random_map {
		1617	my ($exit) = @_;
		1618
		1619	# all this does is basically replace the /! path by
		1620	# a new random map path (?random/...) with a seed
		1621	# that depends on the exit object
		1622
		1623	my $rmp = parse_random_map_params $exit->msg;
		1624
		1625	if ($exit->map) {
		1626	$rmp->{region} = $exit->map->region_name;
		1627	$rmp->{origin_map} = $exit->map->path;
		1628	$rmp->{origin_x} = $exit->x;
		1629	$rmp->{origin_y} = $exit->y;
		1630	}
		1631
		1632	$rmp->{random_seed} ||= $exit->random_seed;
		1633
		1634	my $data = cf::to_json $rmp;
		1635	my $md5 = Digest::MD5::md5_hex $data;
		1636
		1637	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1638	aio_write $fh, 0, (length $data), $data, 0;
		1639
		1640	$exit->slaying ("?random/$md5");
		1641	$exit->msg (undef);
		1642	}
		1643	}
		1644
		1645	sub cf::object::player::enter_exit {
		1646	my ($self, $exit) = @_;
		1647
		1648	return unless $self->type == cf::PLAYER;
		1649
		1650	$self->enter_link;
		1651
		1652	(async {
		1653	$self->deactivate_recursive; # just to be sure
		1654	unless (eval {
		1655	prepare_random_map $exit
		1656	if $exit->slaying eq "/!";
		1657
		1658	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1659	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1660
		1661	1;
		1662	}) {
		1663	$self->message ("Something went wrong deep within the crossfire server. "
		1664	. "I'll try to bring you back to the map you were before. "
		1665	. "Please report this to the dungeon master",
		1666	cf::NDI_UNIQUE | cf::NDI_RED);
		1667
		1668	warn "ERROR in enter_exit: $@";
		1669	$self->leave_link;
		1670	}
		1671	})->prio (1);
		1672	}
		1673
		1674	=head3 cf::client
		1675
		1676	=over 4
		1677
		1678	=item $client->send_drawinfo ($text, $flags)
		1679
		1680	Sends a drawinfo packet to the client. Circumvents output buffering so
		1681	should not be used under normal circumstances.
		1682
		1683	=cut
		1684
		1685	sub cf::client::send_drawinfo {
		1686	my ($self, $text, $flags) = @_;
		1687
		1688	utf8::encode $text;
		1689	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1690	}
		1691
		1692
		1693	=item $success = $client->query ($flags, "text", \&cb)
		1694
		1695	Queues a query to the client, calling the given callback with
		1696	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1697	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1698
		1699	Queries can fail, so check the return code. Or don't, as queries will become
		1700	reliable at some point in the future.
		1701
		1702	=cut
		1703
		1704	sub cf::client::query {
		1705	my ($self, $flags, $text, $cb) = @_;
		1706
		1707	return unless $self->state == ST_PLAYING
		1708	|| $self->state == ST_SETUP
		1709	|| $self->state == ST_CUSTOM;
		1710
		1711	$self->state (ST_CUSTOM);
		1712
		1713	utf8::encode $text;
		1714	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1715
		1716	$self->send_packet ($self->{query_queue}[0][0])
		1717	if @{ $self->{query_queue} } == 1;
		1718	}
		1719
		1720	cf::client->attach (
		1721	on_reply => sub {
		1722	my ($ns, $msg) = @_;
		1723
		1724	# this weird shuffling is so that direct followup queries
		1725	# get handled first
		1726	my $queue = delete $ns->{query_queue}
		1727	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1728
		1729	(shift @$queue)->[1]->($msg);
		1730
		1731	push @{ $ns->{query_queue} }, @$queue;
		1732
		1733	if (@{ $ns->{query_queue} } == @$queue) {
		1734	if (@$queue) {
		1735	$ns->send_packet ($ns->{query_queue}[0][0]);
		1736	} else {
		1737	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1738	}
		1739	}
		1740	},
		1741	);
		1742
		1743	=item $client->async (\&cb)
		1744
		1745	Create a new coroutine, running the specified callback. The coroutine will
		1746	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1747	or loss of connection).
		1748
		1749	=cut
		1750
		1751	sub cf::client::async {
		1752	my ($self, $cb) = @_;
		1753
		1754	my $coro = &Coro::async ($cb);
		1755
		1756	$coro->on_destroy (sub {
		1757	delete $self->{_coro}{$coro+0};
		1758	});
		1759
		1760	$self->{_coro}{$coro+0} = $coro;
		1761
		1762	$coro
		1763	}
		1764
		1765	cf::client->attach (
		1766	on_destroy => sub {
		1767	my ($ns) = @_;
		1768
		1769	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1770	},
		1771	);
		1772
		1773	=back
		1774
		1775
		1776	=head2 SAFE SCRIPTING
		1777
		1778	Functions that provide a safe environment to compile and execute
		1779	snippets of perl code without them endangering the safety of the server
		1780	itself. Looping constructs, I/O operators and other built-in functionality
		1781	is not available in the safe scripting environment, and the number of
		1782	functions and methods that can be called is greatly reduced.
		1783
		1784	=cut
		1785
		1786	our $safe = new Safe "safe";
		1787	our $safe_hole = new Safe::Hole;
		1788
		1789	$SIG{FPE} = 'IGNORE';
		1790
		1791	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
		1792
		1793	# here we export the classes and methods available to script code
		1794
		1795	=pod
		1796
		1797	The following fucntions and emthods are available within a safe environment:
		1798
		1799	cf::object contr pay_amount pay_player map
		1800	cf::object::player player
		1801	cf::player peaceful
		1802	cf::map trigger
		1803
		1804	=cut
		1805
		1806	for (
		1807	["cf::object" => qw(contr pay_amount pay_player map)],
		1808	["cf::object::player" => qw(player)],
		1809	["cf::player" => qw(peaceful)],
		1810	["cf::map" => qw(trigger)],
		1811	) {
		1812	no strict 'refs';
		1813	my ($pkg, @funs) = @$_;
		1814	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
		1815	for @funs;
		1816	}
		1817
		1818	=over 4
		1819
		1820	=item @retval = safe_eval $code, [var => value, ...]
		1821
		1822	Compiled and executes the given perl code snippet. additional var/value
		1823	pairs result in temporary local (my) scalar variables of the given name
		1824	that are available in the code snippet. Example:
		1825
		1826	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1827
		1828	=cut
		1829
		1830	sub safe_eval($;@) {
		1831	my ($code, %vars) = @_;
		1832
		1833	my $qcode = $code;
		1834	$qcode =~ s/"/‟/g; # not allowed in #line filenames
		1835	$qcode =~ s/\n/\\n/g;
		1836
		1837	local $_;
		1838	local @safe::cf::_safe_eval_args = values %vars;
		1839
		1840	my $eval =
		1841	"do {\n"
		1842	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
		1843	. "#line 0 \"{$qcode}\"\n"
		1844	. $code
		1845	. "\n}"
		1846	;
		1847
		1848	sub_generation_inc;
		1849	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
		1850	sub_generation_inc;
		1851
		1852	if ($@) {
		1853	warn "$@";
		1854	warn "while executing safe code '$code'\n";
		1855	warn "with arguments " . (join " ", %vars) . "\n";
		1856	}
		1857
		1858	wantarray ? @res : $res[0]
		1859	}
		1860
		1861	=item cf::register_script_function $function => $cb
		1862
		1863	Register a function that can be called from within map/npc scripts. The
		1864	function should be reasonably secure and should be put into a package name
		1865	like the extension.
		1866
		1867	Example: register a function that gets called whenever a map script calls
		1868	C<rent::overview>, as used by the C<rent> extension.
		1869
		1870	cf::register_script_function "rent::overview" => sub {
		1871	...
		1872	};
		1873
		1874	=cut
		1875
		1876	sub register_script_function {
		1877	my ($fun, $cb) = @_;
		1878
		1879	no strict 'refs';
		1880	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		1881	}
		1882
		1883	=back
		1884
		1885	=cut
		1886
		1887	#############################################################################
		1888
		1889	=head2 EXTENSION DATABASE SUPPORT
		1890
		1891	Crossfire maintains a very simple database for extension use. It can
		1892	currently store anything that can be serialised using Storable, which
		1893	excludes objects.
		1894
		1895	The parameter C<$family> should best start with the name of the extension
		1896	using it, it should be unique.
		1897
		1898	=over 4
		1899
		1900	=item $hashref = cf::db_get $family
		1901
		1902	Return a hashref for use by the extension C<$family>, which can be
		1903	modified. After modifications, you have to call C<cf::db_dirty> or
		1904	C<cf::db_sync>.
		1905
		1906	=item $value = cf::db_get $family => $key
		1907
		1908	Returns a single value from the database
		1909
		1910	=item cf::db_put $family => $hashref
		1911
		1912	Stores the given family hashref into the database. Updates are delayed, if
		1913	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1914
		1915	=item cf::db_put $family => $key => $value
		1916
		1917	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1918	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1919
		1920	=item cf::db_dirty
		1921
		1922	Marks the database as dirty, to be updated at a later time.
		1923
		1924	=item cf::db_sync
		1925
		1926	Immediately write the database to disk I<if it is dirty>.
		1927
		1928	=cut
		1929
		1930	our $DB;
		1931
		1932	{
		1933	my $path = cf::localdir . "/database.pst";
		1934
		1935	sub db_load() {
		1936	$DB = stat $path ? Storable::retrieve $path : { };
		1937	}
		1938
		1939	my $pid;
		1940
		1941	sub db_save() {
		1942	waitpid $pid, 0 if $pid;
		1943	if (0 == ($pid = fork)) {
		1944	$DB->{_meta}{version} = 1;
		1945	Storable::nstore $DB, "$path~";
		1946	rename "$path~", $path;
		1947	cf::_exit 0 if defined $pid;
		1948	}
		1949	}
		1950
		1951	my $dirty;
		1952
		1953	sub db_sync() {
		1954	db_save if $dirty;
		1955	undef $dirty;
		1956	}
		1957
		1958	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1959	db_sync;
		1960	});
		1961
		1962	sub db_dirty() {
		1963	$dirty = 1;
		1964	$idle->start;
		1965	}
		1966
		1967	sub db_get($;$) {
		1968	@_ >= 2
		1969	? $DB->{$_[0]}{$_[1]}
		1970	: ($DB->{$_[0]} ||= { })
		1971	}
		1972
		1973	sub db_put($$;$) {
		1974	if (@_ >= 3) {
		1975	$DB->{$_[0]}{$_[1]} = $_[2];
		1976	} else {
		1977	$DB->{$_[0]} = $_[1];
		1978	}
		1979	db_dirty;
		1980	}
		1981
		1982	cf::global->attach (
		1983	prio => 10000,
		1984	on_cleanup => sub {
		1985	db_sync;
		1986	},
		1987	);
		1988	}
		1989
		1990	#############################################################################
		1991	# the server's main()
		1992
		1993	sub cfg_load {
		1994	open my $fh, "<:utf8", cf::confdir . "/config"
		1995	or return;
		1996
		1997	local $/;
		1998	*CFG = YAML::Syck::Load <$fh>;
		1999
		2000	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2001
		2002	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2003	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2004
		2005	if (exists $CFG{mlockall}) {
200	eval {	2006	eval {
201	unload_extension $_ for @exts;	2007	$CFG{mlockall} ? &mlockall : &munlockall
202	delete $INC{"cf.pm"};	2008	and die "WARNING: m(un)lockall failed: $!\n";
203
204	# don't, removes xs symbols, too
205	#Symbol::delete_package $pkg;
206
207	require cf;
208	};	2009	};
209	warn $@ if $@;	2010	warn $@ if $@;
210	$who->message ($@) if $@;	2011	}
211	warn "reloaded\n";	2012	}
212		2013
213	$who->message ("reloaded");	2014	sub main {
214	} else {	2015	# we must not ever block the main coroutine
215	$who->message ("Intruder Alert!");	2016	local $Coro::idle = sub {
		2017	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2018	async { Event::one_event };
216	}	2019	};
		2020
		2021	cfg_load;
		2022	db_load;
		2023	load_extensions;
		2024	Event::loop;
		2025	}
		2026
		2027	#############################################################################
		2028	# initialisation
		2029
		2030	sub reload() {
		2031	# can/must only be called in main
		2032	if ($Coro::current != $Coro::main) {
		2033	warn "can only reload from main coroutine\n";
		2034	return;
		2035	}
		2036
		2037	warn "reloading...";
		2038
		2039	my $guard = freeze_mainloop;
		2040	cf::emergency_save;
		2041
		2042	eval {
		2043	# if anything goes wrong in here, we should simply crash as we already saved
		2044
		2045	# cancel all watchers
		2046	for (Event::all_watchers) {
		2047	$_->cancel if $_->data & WF_AUTOCANCEL;
		2048	}
		2049
		2050	# cancel all extension coros
		2051	$_->cancel for values %EXT_CORO;
		2052	%EXT_CORO = ();
		2053
		2054	# unload all extensions
		2055	for (@exts) {
		2056	warn "unloading <$_>";
		2057	unload_extension $_;
		2058	}
		2059
		2060	# unload all modules loaded from $LIBDIR
		2061	while (my ($k, $v) = each %INC) {
		2062	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2063
		2064	warn "removing <$k>";
		2065	delete $INC{$k};
		2066
		2067	$k =~ s/\.pm$//;
		2068	$k =~ s/\//::/g;
		2069
		2070	if (my $cb = $k->can ("unload_module")) {
		2071	$cb->();
		2072	}
		2073
		2074	Symbol::delete_package $k;
		2075	}
		2076
		2077	# sync database to disk
		2078	cf::db_sync;
		2079	IO::AIO::flush;
		2080
		2081	# get rid of safe::, as good as possible
		2082	Symbol::delete_package "safe::$_"
		2083	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2084
		2085	# remove register_script_function callbacks
		2086	# TODO
		2087
		2088	# unload cf.pm "a bit"
		2089	delete $INC{"cf.pm"};
		2090
		2091	# don't, removes xs symbols, too,
		2092	# and global variables created in xs
		2093	#Symbol::delete_package __PACKAGE__;
		2094
		2095	# reload cf.pm
		2096	warn "reloading cf.pm";
		2097	require cf;
		2098	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2099
		2100	# load config and database again
		2101	cf::cfg_load;
		2102	cf::db_load;
		2103
		2104	# load extensions
		2105	warn "load extensions";
		2106	cf::load_extensions;
		2107
		2108	# reattach attachments to objects
		2109	warn "reattach";
		2110	_global_reattach;
		2111	};
		2112
		2113	if ($@) {
		2114	warn $@;
		2115	warn "error while reloading, exiting.";
		2116	exit 1;
		2117	}
		2118
		2119	warn "reloaded successfully";
217	};	2120	};
218		2121
219	#############################################################################	2122	#############################################################################
220	# load/save/clean perl data associated with a map
221		2123
222	*on_mapclean = sub {	2124	unless ($LINK_MAP) {
223	my $map = shift->{map};	2125	$LINK_MAP = cf::map::new;
224		2126
225	my $path = $map->tmpname;	2127	$LINK_MAP->width (41);
226	defined $path or return;	2128	$LINK_MAP->height (41);
		2129	$LINK_MAP->alloc;
		2130	$LINK_MAP->path ("{link}");
		2131	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2132	$LINK_MAP->in_memory (MAP_IN_MEMORY);
227		2133
228	unlink "$path.cfperl";	2134	# dirty hack because... archetypes are not yet loaded
		2135	Event->timer (
		2136	after => 2,
		2137	cb => sub {
		2138	$_[0]->w->cancel;
		2139
		2140	# provide some exits "home"
		2141	my $exit = cf::object::new "exit";
		2142
		2143	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2144	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2145	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2146
		2147	$LINK_MAP->insert ($exit->clone, 19, 19);
		2148	$LINK_MAP->insert ($exit->clone, 19, 20);
		2149	$LINK_MAP->insert ($exit->clone, 19, 21);
		2150	$LINK_MAP->insert ($exit->clone, 20, 19);
		2151	$LINK_MAP->insert ($exit->clone, 20, 21);
		2152	$LINK_MAP->insert ($exit->clone, 21, 19);
		2153	$LINK_MAP->insert ($exit->clone, 21, 20);
		2154	$LINK_MAP->insert ($exit->clone, 21, 21);
		2155
		2156	$exit->destroy;
		2157	});
		2158
		2159	$LINK_MAP->{deny_save} = 1;
		2160	$LINK_MAP->{deny_reset} = 1;
		2161
		2162	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2163	}
		2164
		2165	register "<global>", __PACKAGE__;
		2166
		2167	register_command "reload" => sub {
		2168	my ($who, $arg) = @_;
		2169
		2170	if ($who->flag (FLAG_WIZ)) {
		2171	$who->message ("start of reload.");
		2172	reload;
		2173	$who->message ("end of reload.");
		2174	}
229	};	2175	};
230		2176
231	*on_mapin =	2177	unshift @INC, $LIBDIR;
232	*on_mapload = sub {
233	my $map = shift->{map};
234		2178
235	my $path = $map->tmpname;	2179	$TICK_WATCHER = Event->timer (
236	$path = $map->path unless defined $path;	2180	reentrant => 0,
		2181	prio => 0,
		2182	at => $NEXT_TICK || $TICK,
		2183	data => WF_AUTOCANCEL,
		2184	cb => sub {
		2185	cf::server_tick; # one server iteration
		2186	$RUNTIME += $TICK;
		2187	$NEXT_TICK += $TICK;
237		2188
238	open my $fh, "<:raw", "$path.cfperl"	2189	# if we are delayed by four ticks or more, skip them all
239	or return; # no perl data	2190	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
240		2191
241	my $data = Storable::thaw do { local $/; <$fh> };	2192	$TICK_WATCHER->at ($NEXT_TICK);
242		2193	$TICK_WATCHER->start;
243	$data->{version} <= 1
244	or return; # too new
245
246	$map->_set_obs ($data->{obs});
247	};
248
249	*on_mapout = sub {
250	my $map = shift->{map};
251
252	my $path = $map->tmpname;
253	$path = $map->path unless defined $path;
254
255	my $obs = $map->_get_obs;
256
257	if (defined $obs) {
258	open my $fh, ">:raw", "$path.cfperl"
259	or die "$path.cfperl: $!";
260
261	stat $path;
262
263	print $fh Storable::nfreeze {
264	size => (stat _)[7],
265	time => (stat _)[9],
266	version => 1,
267	obs => $obs,
268	};
269
270	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
271	} else {
272	unlink "$path.cfperl";
273	}	2194	},
274	};	2195	);
275		2196
276	#############################################################################	2197	IO::AIO::max_poll_time $TICK * 0.2;
277	# load/save perl data associated with player->ob objects
278		2198
279	*on_player_load = sub {	2199	Event->io (
280	my ($event) = @_;	2200	fd => IO::AIO::poll_fileno,
281	my $path = $event->{message};	2201	poll => 'r',
282	my $ob = $event->{who};	2202	prio => 5,
		2203	data => WF_AUTOCANCEL,
		2204	cb => \&IO::AIO::poll_cb,
		2205	);
283		2206
284	open my $fh, "<:raw", "$path.cfperl"	2207	Event->timer (
285	or return; # no perl data	2208	data => WF_AUTOCANCEL,
286		2209	after => 0,
287	my $data = Storable::thaw do { local $/; <$fh> };	2210	interval => 10,
288		2211	cb => sub {
289	$data->{version} <= 1	2212	(Coro::unblock_sub {
290	or return; # too new	2213	write_runtime
291		2214	or warn "ERROR: unable to write runtime file: $!";
292	%$ob = %{$data->{ob}};
293	};
294
295	*on_player_save = sub {
296	my ($event) = @_;
297	my $path = $event->{message};
298	my $ob = $event->{who};
299
300	if (keys %$ob) {
301	open my $fh, ">:raw", "$path.cfperl"
302	or die "$path.cfperl: $!";
303
304	stat $path;
305
306	print $fh Storable::nfreeze {
307	size => (stat _)[7],
308	time => (stat _)[9],
309	version => 1,
310	ob => $ob,
311	};	2215	})->();
312
313	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
314	} else {
315	unlink "$path.cfperl";
316	}	2216	},
317	};	2217	);
318		2218
319	register "<global>", __PACKAGE__;	2219	END { cf::emergency_save }
320
321	load_extensions;
322		2220
323	1	2221	1
324		2222

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