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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.15 by root, Sun Jun 11 15:02:16 2006 UTC vs.
Revision 1.116 by root, Mon Jan 1 17:30:34 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 (2); # 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 $FREEZE;
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO;
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76
		77	our $EMERGENCY_POSITION = $cf::CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		78
		79	#############################################################################
		80
		81	=head2 GLOBAL VARIABLES
		82
		83	=over 4
		84
		85	=item $cf::UPTIME
		86
		87	The timestamp of the server start (so not actually an uptime).
		88
		89	=item $cf::RUNTIME
		90
		91	The time this server has run, starts at 0 and is increased by $cf::TICK on
		92	every server tick.
		93
		94	=item $cf::LIBDIR
		95
		96	The perl library directory, where extensions and cf-specific modules can
		97	be found. It will be added to C<@INC> automatically.
		98
		99	=item $cf::NOW
		100
		101	The time of the last (current) server tick.
		102
		103	=item $cf::TICK
		104
		105	The interval between server ticks, in seconds.
		106
		107	=item %cf::CFG
		108
		109	Configuration for the server, loaded from C</etc/crossfire/config>, or
		110	from wherever your confdir points to.
		111
		112	=back
		113
		114	=cut
13		115
14	BEGIN {	116	BEGIN {
15	@EVENT = map lc, @EVENT;
16
17	*CORE::GLOBAL::warn = sub {	117	*CORE::GLOBAL::warn = sub {
18	my $msg = join "", @_;	118	my $msg = join "", @_;
		119	utf8::encode $msg;
		120
19	$msg .= "\n"	121	$msg .= "\n"
20	unless $msg =~ /\n$/;	122	unless $msg =~ /\n$/;
21		123
22	print STDERR "cfperl: $msg";
23	LOG llevError, "cfperl: $msg";	124	LOG llevError, "cfperl: $msg";
24	};	125	};
25	}	126	}
26		127
27	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	128	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		129	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		130	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		131	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		132	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		133	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
28		134
29	# generate property mutators	135	# we bless all objects into (empty) derived classes to force a method lookup
30	sub prop_gen {	136	# within the Safe compartment.
31	my ($prefix, $class) = @_;	137	for my $pkg (qw(
32		138	cf::global cf::attachable
		139	cf::object cf::object::player
		140	cf::client cf::player
		141	cf::arch cf::living
		142	cf::map cf::party cf::region
		143	)) {
33	no strict 'refs';	144	no strict 'refs';
34		145	@{"safe::$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	}	146	}
51		147
52	# auto-generate most of the API	148	$Event::DIED = sub {
53		149	warn "error in event callback: @_";
54	prop_gen OBJECT_PROP => "cf::object";	150	};
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		151
66	my %ext_pkg;	152	my %ext_pkg;
67	my @exts;	153	my @exts;
68	my @hook;	154	my @hook;
69	my %command;
70	my %extcmd;
71		155
72	sub inject_event {	156	=head2 UTILITY FUNCTIONS
73	my $extension = shift;	157
		158	=over 4
		159
		160	=cut
		161
		162	use JSON::Syck (); # TODO# replace by JSON::PC once working
		163
		164	=item $ref = cf::from_json $json
		165
		166	Converts a JSON string into the corresponding perl data structure.
		167
		168	=cut
		169
		170	sub from_json($) {
		171	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		172	JSON::Syck::Load $_[0]
		173	}
		174
		175	=item $json = cf::to_json $ref
		176
		177	Converts a perl data structure into its JSON representation.
		178
		179	=cut
		180
		181	sub to_json($) {
		182	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		183	JSON::Syck::Dump $_[0]
		184	}
		185
		186	=item cf::sync_job { BLOCK }
		187
		188	The design of crossfire+ requires that the main coro ($Coro::main) is
		189	always able to handle events or runnable, as crossfire+ is only partly
		190	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		191
		192	If it must be done, put the blocking parts into C<sync_job>. This will run
		193	the given BLOCK in another coroutine while waiting for the result. The
		194	server will be frozen during this time, so the block should either finish
		195	fast or be very important.
		196
		197	=cut
		198
		199	sub sync_job(&) {
		200	my ($job) = @_;
		201
		202	if ($Coro::current == $Coro::main) {
		203	# this is the main coro, too bad, we have to block
		204	# till the operation succeeds, freezing the server :/
		205
		206	# TODO: use suspend/resume instead
		207	# (but this is cancel-safe)
		208	local $FREEZE = 1;
		209
		210	my $busy = 1;
		211	my @res;
		212
		213	(Coro::async {
		214	@res = eval { $job->() };
		215	warn $@ if $@;
		216	undef $busy;
		217	})->prio (Coro::PRIO_MAX);
		218
		219	while ($busy) {
		220	Coro::cede_notself;
		221	Event::one_event unless Coro::nready;
		222	}
		223
		224	wantarray ? @res : $res[0]
		225	} else {
		226	# we are in another coroutine, how wonderful, everything just works
		227
		228	$job->()
		229	}
		230	}
		231
		232	=item $coro = cf::coro { BLOCK }
		233
		234	Creates and returns a new coro. This coro is automcatially being canceled
		235	when the extension calling this is being unloaded.
		236
		237	=cut
		238
		239	sub coro(&) {
74	my $event_code = shift;	240	my $cb = shift;
75		241
76	my $cb = $hook[$event_code]{$extension}	242	my $coro; $coro = async {
		243	eval {
		244	$cb->();
		245	};
		246	warn $@ if $@;
		247	};
		248
		249	$coro->on_destroy (sub {
		250	delete $EXT_CORO{$coro+0};
		251	});
		252	$EXT_CORO{$coro+0} = $coro;
		253
		254	$coro
		255	}
		256
		257	sub write_runtime {
		258	my $runtime = cf::localdir . "/runtime";
		259
		260	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
77	or return;	261	or return;
78		262
79	&$cb	263	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
80	}	264	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		265	and return;
81		266
82	sub inject_global_event {	267	aio_fsync $fh
		268	and return;
		269
		270	close $fh
		271	or return;
		272
		273	aio_rename "$runtime~", $runtime
		274	and return;
		275
		276	1
		277	}
		278
		279	=back
		280
		281	=cut
		282
		283	#############################################################################
		284
		285	package cf::path;
		286
		287	sub new {
		288	my ($class, $path, $base) = @_;
		289
		290	$path = $path->as_string if ref $path;
		291
		292	my $self = bless { }, $class;
		293
		294	# {... are special paths that are not touched
		295	# ?xxx/... are special absolute paths
		296	# ?random/... random maps
		297	# /! non-realised random map exit
		298	# /... normal maps
		299	# ~/... per-player maps without a specific player (DO NOT USE)
		300	# ~user/... per-player map of a specific user
		301
		302	if ($path =~ /^{/) {
		303	# fine as it is
		304	} elsif ($path =~ s{^\?random/}{}) {
		305	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		306	$self->{random} = cf::from_json $data;
		307	} else {
		308	if ($path =~ s{^~([^/]+)?}{}) {
		309	$self->{user_rel} = 1;
		310
		311	if (defined $1) {
		312	$self->{user} = $1;
		313	} elsif ($base =~ m{^~([^/]+)/}) {
		314	$self->{user} = $1;
		315	} else {
		316	warn "cannot resolve user-relative path without user <$path,$base>\n";
		317	}
		318	} elsif ($path =~ /^\//) {
		319	# already absolute
		320	} else {
		321	$base =~ s{[^/]+/?$}{};
		322	return $class->new ("$base/$path");
		323	}
		324
		325	for ($path) {
		326	redo if s{/\.?/}{/};
		327	redo if s{/[^/]+/\.\./}{/};
		328	}
		329	}
		330
		331	$self->{path} = $path;
		332
		333	$self
		334	}
		335
		336	# the name / primary key / in-game path
		337	sub as_string {
		338	my ($self) = @_;
		339
		340	$self->{user_rel} ? "~$self->{user}$self->{path}"
		341	: $self->{random} ? "?random/$self->{path}"
		342	: $self->{path}
		343	}
		344
		345	# the displayed name, this is a one way mapping
		346	sub visible_name {
		347	my ($self) = @_;
		348
		349	# if (my $rmp = $self->{random}) {
		350	# # todo: be more intelligent about this
		351	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		352	# } else {
		353	$self->as_string
		354	# }
		355	}
		356
		357	# escape the /'s in the path
		358	sub _escaped_path {
		359	# ∕ is U+2215
		360	(my $path = $_[0]{path}) =~ s/\//∕/g;
		361	$path
		362	}
		363
		364	# the original (read-only) location
		365	sub load_path {
		366	my ($self) = @_;
		367
		368	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		369	}
		370
		371	# the temporary/swap location
		372	sub save_path {
		373	my ($self) = @_;
		374
		375	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		376	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		377	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		378	}
		379
		380	# the unique path, might be eq to save_path
		381	sub uniq_path {
		382	my ($self) = @_;
		383
		384	$self->{user_rel} || $self->{random}
		385	? undef
		386	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		387	}
		388
		389	# return random map parameters, or undef
		390	sub random_map_params {
		391	my ($self) = @_;
		392
		393	$self->{random}
		394	}
		395
		396	# this is somewhat ugly, but style maps do need special treatment
		397	sub is_style_map {
		398	$_[0]{path} =~ m{^/styles/}
		399	}
		400
		401	package cf;
		402
		403	#############################################################################
		404
		405	=head2 ATTACHABLE OBJECTS
		406
		407	Many objects in crossfire are so-called attachable objects. That means you can
		408	attach callbacks/event handlers (a collection of which is called an "attachment")
		409	to it. All such attachable objects support the following methods.
		410
		411	In the following description, CLASS can be any of C<global>, C<object>
		412	C<player>, C<client> or C<map> (i.e. the attachable objects in
		413	crossfire+).
		414
		415	=over 4
		416
		417	=item $attachable->attach ($attachment, key => $value...)
		418
		419	=item $attachable->detach ($attachment)
		420
		421	Attach/detach a pre-registered attachment to a specific object and give it
		422	the specified key/value pairs as arguments.
		423
		424	Example, attach a minesweeper attachment to the given object, making it a
		425	10x10 minesweeper game:
		426
		427	$obj->attach (minesweeper => width => 10, height => 10);
		428
		429	=item $bool = $attachable->attached ($name)
		430
		431	Checks wether the named attachment is currently attached to the object.
		432
		433	=item cf::CLASS->attach ...
		434
		435	=item cf::CLASS->detach ...
		436
		437	Define an anonymous attachment and attach it to all objects of the given
		438	CLASS. See the next function for an explanation of its arguments.
		439
		440	You can attach to global events by using the C<cf::global> class.
		441
		442	Example, log all player logins:
		443
		444	cf::player->attach (
		445	on_login => sub {
		446	my ($pl) = @_;
		447	...
		448	},
		449	);
		450
		451	Example, attach to the jeweler skill:
		452
		453	cf::object->attach (
		454	type => cf::SKILL,
		455	subtype => cf::SK_JEWELER,
		456	on_use_skill => sub {
		457	my ($sk, $ob, $part, $dir, $msg) = @_;
		458	...
		459	},
		460	);
		461
		462	=item cf::CLASS::attachment $name, ...
		463
		464	Register an attachment by C<$name> through which attachable objects of the
		465	given CLASS can refer to this attachment.
		466
		467	Some classes such as crossfire maps and objects can specify attachments
		468	that are attached at load/instantiate time, thus the need for a name.
		469
		470	These calls expect any number of the following handler/hook descriptions:
		471
		472	=over 4
		473
		474	=item prio => $number
		475
		476	Set the priority for all following handlers/hooks (unless overwritten
		477	by another C<prio> setting). Lower priority handlers get executed
		478	earlier. The default priority is C<0>, and many built-in handlers are
		479	registered at priority C<-1000>, so lower priorities should not be used
		480	unless you know what you are doing.
		481
		482	=item type => $type
		483
		484	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		485	given type of objects only (the additional parameter C<subtype> can be
		486	used to further limit to the given subtype).
		487
		488	=item on_I<event> => \&cb
		489
		490	Call the given code reference whenever the named event happens (event is
		491	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		492	handlers are recognised generally depends on the type of object these
		493	handlers attach to).
		494
		495	See F<include/eventinc.h> for the full list of events supported, and their
		496	class.
		497
		498	=item package => package::
		499
		500	Look for sub functions of the name C<< on_I<event> >> in the given
		501	package and register them. Only handlers for eevents supported by the
		502	object/class are recognised.
		503
		504	=back
		505
		506	Example, define an attachment called "sockpuppet" that calls the given
		507	event handler when a monster attacks:
		508
		509	cf::object::attachment sockpuppet =>
		510	on_skill_attack => sub {
		511	my ($self, $victim) = @_;
		512	...
		513	}
		514	}
		515
		516	=item $attachable->valid
		517
		518	Just because you have a perl object does not mean that the corresponding
		519	C-level object still exists. If you try to access an object that has no
		520	valid C counterpart anymore you get an exception at runtime. This method
		521	can be used to test for existence of the C object part without causing an
		522	exception.
		523
		524	=cut
		525
		526	# the following variables are defined in .xs and must not be re-created
		527	our @CB_GLOBAL = (); # registry for all global events
		528	our @CB_ATTACHABLE = (); # registry for all attachables
		529	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		530	our @CB_PLAYER = ();
		531	our @CB_CLIENT = ();
		532	our @CB_TYPE = (); # registry for type (cf-object class) based events
		533	our @CB_MAP = ();
		534
		535	my %attachment;
		536
		537	sub _attach_cb($$$$) {
		538	my ($registry, $event, $prio, $cb) = @_;
		539
		540	use sort 'stable';
		541
		542	$cb = [$prio, $cb];
		543
		544	@{$registry->[$event]} = sort
		545	{ $a->[0] cmp $b->[0] }
		546	@{$registry->[$event] || []}, $cb;
		547	}
		548
		549	# hack
		550	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		551
		552	# attach handles attaching event callbacks
		553	# the only thing the caller has to do is pass the correct
		554	# registry (== where the callback attaches to).
		555	sub _attach {
		556	my ($registry, $klass, @arg) = @_;
		557
		558	my $object_type;
		559	my $prio = 0;
		560	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		561
		562	#TODO: get rid of this hack
		563	if ($attachable_klass{$klass}) {
		564	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		565	}
		566
		567	while (@arg) {
		568	my $type = shift @arg;
		569
		570	if ($type eq "prio") {
		571	$prio = shift @arg;
		572
		573	} elsif ($type eq "type") {
		574	$object_type = shift @arg;
		575	$registry = $CB_TYPE[$object_type] ||= [];
		576
		577	} elsif ($type eq "subtype") {
		578	defined $object_type or Carp::croak "subtype specified without type";
		579	my $object_subtype = shift @arg;
		580	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		581
		582	} elsif ($type eq "package") {
		583	my $pkg = shift @arg;
		584
		585	while (my ($name, $id) = each %cb_id) {
		586	if (my $cb = $pkg->can ($name)) {
		587	_attach_cb $registry, $id, $prio, $cb;
		588	}
		589	}
		590
		591	} elsif (exists $cb_id{$type}) {
		592	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		593
		594	} elsif (ref $type) {
		595	warn "attaching objects not supported, ignoring.\n";
		596
		597	} else {
		598	shift @arg;
		599	warn "attach argument '$type' not supported, ignoring.\n";
		600	}
		601	}
		602	}
		603
		604	sub _object_attach {
		605	my ($obj, $name, %arg) = @_;
		606
		607	return if exists $obj->{_attachment}{$name};
		608
		609	if (my $attach = $attachment{$name}) {
		610	my $registry = $obj->registry;
		611
		612	for (@$attach) {
		613	my ($klass, @attach) = @$_;
		614	_attach $registry, $klass, @attach;
		615	}
		616
		617	$obj->{$name} = \%arg;
		618	} else {
		619	warn "object uses attachment '$name' that is not available, postponing.\n";
		620	}
		621
		622	$obj->{_attachment}{$name} = undef;
		623	}
		624
		625	sub cf::attachable::attach {
		626	if (ref $_[0]) {
		627	_object_attach @_;
		628	} else {
		629	_attach shift->_attach_registry, @_;
		630	}
		631	};
		632
		633	# all those should be optimised
		634	sub cf::attachable::detach {
		635	my ($obj, $name) = @_;
		636
		637	if (ref $obj) {
		638	delete $obj->{_attachment}{$name};
		639	reattach ($obj);
		640	} else {
		641	Carp::croak "cannot, currently, detach class attachments";
		642	}
		643	};
		644
		645	sub cf::attachable::attached {
		646	my ($obj, $name) = @_;
		647
		648	exists $obj->{_attachment}{$name}
		649	}
		650
		651	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		652	eval "#line " . __LINE__ . " 'cf.pm'
		653	sub cf::\L$klass\E::_attach_registry {
		654	(\\\@CB_$klass, KLASS_$klass)
		655	}
		656
		657	sub cf::\L$klass\E::attachment {
		658	my \$name = shift;
		659
		660	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		661	}
		662	";
		663	die if $@;
		664	}
		665
		666	our $override;
		667	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		668
		669	sub override {
		670	$override = 1;
		671	@invoke_results = ();
		672	}
		673
		674	sub do_invoke {
83	my $event = shift;	675	my $event = shift;
		676	my $callbacks = shift;
84		677
85	my $cb = $hook[$event]	678	@invoke_results = ();
		679
		680	local $override;
		681
		682	for (@$callbacks) {
		683	eval { &{$_->[1]} };
		684
		685	if ($@) {
		686	warn "$@";
		687	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		688	override;
		689	}
		690
		691	return 1 if $override;
		692	}
		693
		694	0
		695	}
		696
		697	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		698
		699	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		700
		701	Generate an object-specific event with the given arguments.
		702
		703	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		704	removed in future versions), and there is no public API to access override
		705	results (if you must, access C<@cf::invoke_results> directly).
		706
		707	=back
		708
		709	=cut
		710
		711	#############################################################################
		712	# object support
		713
		714	sub reattach {
		715	# basically do the same as instantiate, without calling instantiate
		716	my ($obj) = @_;
		717
		718	my $registry = $obj->registry;
		719
		720	@$registry = ();
		721
		722	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		723
		724	for my $name (keys %{ $obj->{_attachment} || {} }) {
		725	if (my $attach = $attachment{$name}) {
		726	for (@$attach) {
		727	my ($klass, @attach) = @$_;
		728	_attach $registry, $klass, @attach;
		729	}
		730	} else {
		731	warn "object uses attachment '$name' that is not available, postponing.\n";
		732	}
		733	}
		734	}
		735
		736	cf::attachable->attach (
		737	prio => -1000000,
		738	on_instantiate => sub {
		739	my ($obj, $data) = @_;
		740
		741	$data = from_json $data;
		742
		743	for (@$data) {
		744	my ($name, $args) = @$_;
		745
		746	$obj->attach ($name, %{$args || {} });
		747	}
		748	},
		749	on_reattach => \&reattach,
		750	on_clone => sub {
		751	my ($src, $dst) = @_;
		752
		753	@{$dst->registry} = @{$src->registry};
		754
		755	%$dst = %$src;
		756
		757	%{$dst->{_attachment}} = %{$src->{_attachment}}
		758	if exists $src->{_attachment};
		759	},
		760	);
		761
		762	sub object_freezer_save {
		763	my ($filename, $rdata, $objs) = @_;
		764
		765	sync_job {
		766	if (length $$rdata) {
		767	warn sprintf "saving %s (%d,%d)\n",
		768	$filename, length $$rdata, scalar @$objs;
		769
		770	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		771	chmod SAVE_MODE, $fh;
		772	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		773	aio_fsync $fh;
		774	close $fh;
		775
		776	if (@$objs) {
		777	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		778	chmod SAVE_MODE, $fh;
		779	my $data = Storable::nfreeze { version => 1, objs => $objs };
		780	aio_write $fh, 0, (length $data), $data, 0;
		781	aio_fsync $fh;
		782	close $fh;
		783	aio_rename "$filename.pst~", "$filename.pst";
		784	}
		785	} else {
		786	aio_unlink "$filename.pst";
		787	}
		788
		789	aio_rename "$filename~", $filename;
		790	} else {
		791	warn "FATAL: $filename~: $!\n";
		792	}
		793	} else {
		794	aio_unlink $filename;
		795	aio_unlink "$filename.pst";
		796	}
		797	}
		798	}
		799
		800	sub object_freezer_as_string {
		801	my ($rdata, $objs) = @_;
		802
		803	use Data::Dumper;
		804
		805	$$rdata . Dumper $objs
		806	}
		807
		808	sub object_thawer_load {
		809	my ($filename) = @_;
		810
		811	my ($data, $av);
		812
		813	(aio_load $filename, $data) >= 0
86	or return;	814	or return;
87		815
88	List::Util::max map &$_, values %$cb	816	unless (aio_stat "$filename.pst") {
89	}	817	(aio_load "$filename.pst", $av) >= 0
90		818	or return;
91	sub inject_command {	819	$av = eval { (Storable::thaw $av)->{objs} };
92	my ($name, $obj, $params) = @_;
93
94	for my $cmd (@{ $command{$name} }) {
95	$cmd->[1]->($obj, $params);
96	}	820	}
97		821
98	-1	822	return ($data, $av);
99	}	823	}
		824
		825	#############################################################################
		826	# command handling &c
		827
		828	=item cf::register_command $name => \&callback($ob,$args);
		829
		830	Register a callback for execution when the client sends the user command
		831	$name.
		832
		833	=cut
100		834
101	sub register_command {	835	sub register_command {
102	my ($name, $time, $cb) = @_;	836	my ($name, $cb) = @_;
103		837
104	my $caller = caller;	838	my $caller = caller;
105
106	warn "registering command '$name/$time' to '$caller'";	839	#warn "registering command '$name/$time' to '$caller'";
107		840
108	push @{ $command{$name} }, [$time, $cb, $caller];	841	push @{ $COMMAND{$name} }, [$caller, $cb];
109	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
110	}	842	}
		843
		844	=item cf::register_extcmd $name => \&callback($pl,$packet);
		845
		846	Register a callbackf ro execution when the client sends an extcmd packet.
		847
		848	If the callback returns something, it is sent back as if reply was being
		849	called.
		850
		851	=cut
		852
		853	sub register_extcmd {
		854	my ($name, $cb) = @_;
		855
		856	my $caller = caller;
		857	#warn "registering extcmd '$name' to '$caller'";
		858
		859	$EXTCMD{$name} = [$cb, $caller];
		860	}
		861
		862	cf::player->attach (
		863	on_command => sub {
		864	my ($pl, $name, $params) = @_;
		865
		866	my $cb = $COMMAND{$name}
		867	or return;
		868
		869	for my $cmd (@$cb) {
		870	$cmd->[1]->($pl->ob, $params);
		871	}
		872
		873	cf::override;
		874	},
		875	on_extcmd => sub {
		876	my ($pl, $buf) = @_;
		877
		878	my $msg = eval { from_json $buf };
		879
		880	if (ref $msg) {
		881	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		882	if (my %reply = $cb->[0]->($pl, $msg)) {
		883	$pl->ext_reply ($msg->{msgid}, %reply);
		884	}
		885	}
		886	} else {
		887	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		888	}
		889
		890	cf::override;
		891	},
		892	);
111		893
112	sub register {	894	sub register {
113	my ($base, $pkg) = @_;	895	my ($base, $pkg) = @_;
114		896
115	for my $idx (0 .. $#EVENT) {	897	#TODO
116	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
117	warn "registering $EVENT[$idx] hook to '$pkg'\n";
118	$hook[$idx]{$base} = $ref;
119	}
120	}
121	}	898	}
122		899
123	sub load_extension {	900	sub load_extension {
124	my ($path) = @_;	901	my ($path) = @_;
125		902
126	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	903	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
127	my $base = $1;	904	my $base = $1;
128	my $pkg = $1;	905	my $pkg = $1;
129	$pkg =~ s/[^[:word:]]/_/g;	906	$pkg =~ s/[^[:word:]]/_/g;
130	$pkg = "cf::ext::$pkg";	907	$pkg = "ext::$pkg";
131		908
132	warn "loading '$path' into '$pkg'\n";	909	warn "loading '$path' into '$pkg'\n";
133		910
134	open my $fh, "<:utf8", $path	911	open my $fh, "<:utf8", $path
135	or die "$path: $!";	912	or die "$path: $!";
…		…
139	. "#line 1 \"$path\"\n{\n"	916	. "#line 1 \"$path\"\n{\n"
140	. (do { local $/; <$fh> })	917	. (do { local $/; <$fh> })
141	. "\n};\n1";	918	. "\n};\n1";
142		919
143	eval $source	920	eval $source
144	or die "$path: $@";	921	or die $@ ? "$path: $@\n"
		922	: "extension disabled.\n";
145		923
146	push @exts, $pkg;	924	push @exts, $pkg;
147	$ext_pkg{$base} = $pkg;	925	$ext_pkg{$base} = $pkg;
148		926
149	# no strict 'refs';	927	# no strict 'refs';
150	# @{"$pkg\::ISA"} = cf::ext::;	928	# @{"$pkg\::ISA"} = ext::;
151		929
152	register $base, $pkg;	930	register $base, $pkg;
153	}	931	}
154		932
155	sub unload_extension {	933	sub unload_extension {
156	my ($pkg) = @_;	934	my ($pkg) = @_;
157		935
158	warn "removing extension $pkg\n";	936	warn "removing extension $pkg\n";
159		937
160	# remove hooks	938	# remove hooks
		939	#TODO
161	for my $idx (0 .. $#EVENT) {	940	# for my $idx (0 .. $#PLUGIN_EVENT) {
162	delete $hook[$idx]{$pkg};	941	# delete $hook[$idx]{$pkg};
163	}	942	# }
164		943
165	# remove commands	944	# remove commands
166	for my $name (keys %command) {	945	for my $name (keys %COMMAND) {
167	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	946	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
168		947
169	if (@cb) {	948	if (@cb) {
170	$command{$name} = \@cb;	949	$COMMAND{$name} = \@cb;
171	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
172	} else {	950	} else {
173	delete $command{$name};
174	delete $COMMAND{"$name\000"};	951	delete $COMMAND{$name};
175	}	952	}
176	}	953	}
177		954
178	# remove extcmds	955	# remove extcmds
179	for my $name (keys %command) {	956	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
180	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	957	delete $EXTCMD{$name};
		958	}
181		959
182	if (@cb) {	960	if (my $cb = $pkg->can ("unload")) {
183	$command{$name} = \@cb;
184	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
185	} else {	961	eval {
186	delete $command{$name};	962	$cb->($pkg);
187	delete $COMMAND{"$name\000"};	963	1
188	}	964	} or warn "$pkg unloaded, but with errors: $@";
189	}	965	}
190
191		966
192	Symbol::delete_package $pkg;	967	Symbol::delete_package $pkg;
193	}	968	}
194		969
195	sub load_extensions {	970	sub load_extensions {
196	my $LIBDIR = maps_directory "perl";
197
198	for my $ext (<$LIBDIR/*.ext>) {	971	for my $ext (<$LIBDIR/*.ext>) {
199	next unless -r $ext;	972	next unless -r $ext;
200	eval {	973	eval {
201	load_extension $ext;	974	load_extension $ext;
202	1	975	1
203	} or warn "$ext not loaded: $@";	976	} or warn "$ext not loaded: $@";
204	}	977	}
205	}	978	}
206		979
207	register_command "perl-reload", 0, sub {	980	#############################################################################
		981	# load/save/clean perl data associated with a map
		982
		983	*cf::mapsupport::on_clean = sub {
		984	my ($map) = @_;
		985
		986	my $path = $map->tmpname;
		987	defined $path or return;
		988
		989	unlink "$path.pst";
		990	};
		991
		992	cf::map->attach (prio => -10000, package => cf::mapsupport::);
		993
		994	#############################################################################
		995	# load/save perl data associated with player->ob objects
		996
		997	sub all_objects(@) {
		998	@_, map all_objects ($_->inv), @_
		999	}
		1000
		1001	# TODO: compatibility cruft, remove when no longer needed
		1002	cf::player->attach (
		1003	on_load => sub {
		1004	my ($pl, $path) = @_;
		1005
		1006	for my $o (all_objects $pl->ob) {
		1007	if (my $value = $o->get_ob_key_value ("_perl_data")) {
		1008	$o->set_ob_key_value ("_perl_data");
		1009
		1010	%$o = %{ Storable::thaw pack "H*", $value };
		1011	}
		1012	}
		1013	},
		1014	);
		1015
		1016	#############################################################################
		1017
		1018	=head2 CORE EXTENSIONS
		1019
		1020	Functions and methods that extend core crossfire objects.
		1021
		1022	=head3 cf::player
		1023
		1024	=over 4
		1025
		1026	=item cf::player::exists $login
		1027
		1028	Returns true when the given account exists.
		1029
		1030	=cut
		1031
		1032	sub cf::player::exists($) {
		1033	cf::player::find $_[0]
		1034	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
		1035	}
		1036
		1037	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1038
		1039	Sends an ext reply to the player.
		1040
		1041	=cut
		1042
		1043	sub cf::player::ext_reply($$$%) {
		1044	my ($self, $id, %msg) = @_;
		1045
		1046	$msg{msgid} = $id;
		1047
		1048	$self->send ("ext " . to_json \%msg);
		1049	}
		1050
		1051	=back
		1052
		1053
		1054	=head3 cf::map
		1055
		1056	=over 4
		1057
		1058	=cut
		1059
		1060	package cf::map;
		1061
		1062	use Fcntl;
		1063	use Coro::AIO;
		1064
		1065	our $MAX_RESET = 7200;
		1066	our $DEFAULT_RESET = 3600;
		1067
		1068	sub generate_random_map {
208	my ($who, $arg) = @_;	1069	my ($path, $rmp) = @_;
209		1070
210	if ($who->flag (FLAG_WIZ)) {	1071	# mit "rum" bekleckern, nicht
211	$who->message ("reloading...");	1072	cf::map::_create_random_map
		1073	$path,
		1074	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1075	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1076	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1077	$rmp->{exit_on_final_map},
		1078	$rmp->{xsize}, $rmp->{ysize},
		1079	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1080	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1081	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1082	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1083	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1084	(cf::region::find $rmp->{region})
		1085	}
212		1086
213	warn "reloading...\n";	1087	# and all this just because we cannot iterate over
		1088	# all maps in C++...
		1089	sub change_all_map_light {
		1090	my ($change) = @_;
		1091
		1092	$_->change_map_light ($change) for values %cf::MAP;
		1093	}
		1094
		1095	sub try_load_header($) {
		1096	my ($path) = @_;
		1097
		1098	utf8::encode $path;
		1099	aio_open $path, O_RDONLY, 0
		1100	or return;
		1101
		1102	my $map = cf::map::new
		1103	or return;
		1104
		1105	$map->load_header ($path)
		1106	or return;
		1107
		1108	$map->{load_path} = $path;
		1109
		1110	$map
		1111	}
		1112
		1113	sub find_map {
		1114	my ($path, $origin) = @_;
		1115
		1116	#warn "find_map<$path,$origin>\n";#d#
		1117
		1118	$path = new cf::path $path, $origin && $origin->path;
		1119	my $key = $path->as_string;
		1120
		1121	$cf::MAP{$key} || do {
		1122	# do it the slow way
		1123	my $map = try_load_header $path->save_path;
		1124
		1125	if ($map) {
		1126	# safety
		1127	$map->{instantiate_time} = $cf::RUNTIME
		1128	if $map->{instantiate_time} > $cf::RUNTIME;
		1129	} else {
		1130	if (my $rmp = $path->random_map_params) {
		1131	$map = generate_random_map $key, $rmp;
		1132	} else {
		1133	$map = try_load_header $path->load_path;
		1134	}
		1135
		1136	$map or return;
		1137
		1138	$map->{load_original} = 1;
		1139	$map->{instantiate_time} = $cf::RUNTIME;
		1140	$map->instantiate;
		1141
		1142	# per-player maps become, after loading, normal maps
		1143	$map->per_player (0) if $path->{user_rel};
		1144	}
		1145
		1146	$map->path ($key);
		1147	$map->{path} = $path;
		1148	$map->{last_save} = $cf::RUNTIME;
		1149	$map->last_access ($cf::RUNTIME);
		1150
		1151	if ($map->should_reset) {
		1152	$map->reset;
		1153	$map = find_map $path;
		1154	}
		1155
		1156	$cf::MAP{$key} = $map
		1157	}
		1158	}
		1159
		1160	sub load {
		1161	my ($self) = @_;
		1162
		1163	return if $self->in_memory != cf::MAP_SWAPPED;
		1164
		1165	$self->in_memory (cf::MAP_LOADING);
		1166
		1167	my $path = $self->{path};
		1168
		1169	$self->alloc;
		1170	$self->load_objects ($self->{load_path}, 1)
		1171	or return;
		1172
		1173	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1174	if delete $self->{load_original};
		1175
		1176	if (my $uniq = $path->uniq_path) {
		1177	utf8::encode $uniq;
		1178	if (aio_open $uniq, O_RDONLY, 0) {
		1179	$self->clear_unique_items;
		1180	$self->load_objects ($uniq, 0);
		1181	}
		1182	}
		1183
		1184	# now do the right thing for maps
		1185	$self->link_multipart_objects;
		1186
		1187	if ($self->{path}->is_style_map) {
		1188	$self->{deny_save} = 1;
		1189	$self->{deny_reset} = 1;
		1190	} else {
		1191	$self->fix_auto_apply;
		1192	$self->decay_objects;
		1193	$self->update_buttons;
		1194	$self->set_darkness_map;
		1195	$self->difficulty ($self->estimate_difficulty)
		1196	unless $self->difficulty;
		1197	$self->activate;
		1198	}
		1199
		1200	$self->in_memory (cf::MAP_IN_MEMORY);
		1201	}
		1202
		1203	sub load_map_sync {
		1204	my ($path, $origin) = @_;
		1205
		1206	#warn "load_map_sync<$path, $origin>\n";#d#
		1207
		1208	cf::sync_job {
		1209	my $map = cf::map::find_map $path, $origin
		1210	or return;
		1211	$map->load;
		1212	$map
		1213	}
		1214	}
		1215
		1216	sub save {
		1217	my ($self) = @_;
		1218
		1219	my $save = $self->{path}->save_path; utf8::encode $save;
		1220	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1221
		1222	$self->{last_save} = $cf::RUNTIME;
		1223
		1224	return unless $self->dirty;
		1225
		1226	$self->{load_path} = $save;
		1227
		1228	return if $self->{deny_save};
		1229
		1230	if ($uniq) {
		1231	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1232	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1233	} else {
		1234	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1235	}
		1236	}
		1237
		1238	sub swap_out {
		1239	my ($self) = @_;
		1240
		1241	return if $self->players;
		1242	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1243	return if $self->{deny_save};
		1244
		1245	$self->save;
		1246	$self->clear;
		1247	$self->in_memory (cf::MAP_SWAPPED);
		1248	}
		1249
		1250	sub reset_at {
		1251	my ($self) = @_;
		1252
		1253	# TODO: safety, remove and allow resettable per-player maps
		1254	return 1e99 if $self->{path}{user_rel};
		1255	return 1e99 if $self->{deny_reset};
		1256
		1257	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1258	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1259
		1260	$time + $to
		1261	}
		1262
		1263	sub should_reset {
		1264	my ($self) = @_;
		1265
		1266	$self->reset_at <= $cf::RUNTIME
		1267	}
		1268
		1269	sub unlink_save {
		1270	my ($self) = @_;
		1271
		1272	utf8::encode (my $save = $self->{path}->save_path);
		1273	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1274	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1275	}
		1276
		1277	sub rename {
		1278	my ($self, $new_path) = @_;
		1279
		1280	$self->unlink_save;
		1281
		1282	delete $cf::MAP{$self->path};
		1283	$self->{path} = new cf::path $new_path;
		1284	$self->path ($self->{path}->as_string);
		1285	$cf::MAP{$self->path} = $self;
		1286
		1287	$self->save;
		1288	}
		1289
		1290	sub reset {
		1291	my ($self) = @_;
		1292
		1293	return if $self->players;
		1294	return if $self->{path}{user_rel};#d#
		1295
		1296	warn "resetting map ", $self->path;#d#
		1297
		1298	delete $cf::MAP{$self->path};
		1299
		1300	$_->clear_links_to ($self) for values %cf::MAP;
		1301
		1302	$self->unlink_save;
		1303	$self->destroy;
		1304	}
		1305
		1306	my $nuke_counter = "aaaa";
		1307
		1308	sub nuke {
		1309	my ($self) = @_;
		1310
		1311	$self->{deny_save} = 1;
		1312	$self->reset_timeout (1);
		1313	$self->rename ("{nuke}/" . ($nuke_counter++));
		1314	$self->reset; # polite request, might not happen
		1315	}
		1316
		1317	sub customise_for {
		1318	my ($map, $ob) = @_;
		1319
		1320	if ($map->per_player) {
		1321	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1322	}
		1323
		1324	$map
		1325	}
		1326
		1327	sub emergency_save {
		1328	local $cf::FREEZE = 1;
		1329
		1330	warn "enter emergency map save\n";
		1331
		1332	cf::sync_job {
		1333	warn "begin emergency map save\n";
		1334	$_->save for values %cf::MAP;
		1335	};
		1336
		1337	warn "end emergency map save\n";
		1338	}
		1339
		1340	package cf;
		1341
		1342	=back
		1343
		1344
		1345	=head3 cf::object::player
		1346
		1347	=over 4
		1348
		1349	=item $player_object->reply ($npc, $msg[, $flags])
		1350
		1351	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
		1352	can be C<undef>. Does the right thing when the player is currently in a
		1353	dialogue with the given NPC character.
		1354
		1355	=cut
		1356
		1357	# rough implementation of a future "reply" method that works
		1358	# with dialog boxes.
		1359	#TODO: the first argument must go, split into a $npc->reply_to ( method
		1360	sub cf::object::player::reply($$$;$) {
		1361	my ($self, $npc, $msg, $flags) = @_;
		1362
		1363	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
		1364
		1365	if ($self->{record_replies}) {
		1366	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		1367	} else {
		1368	$msg = $npc->name . " says: $msg" if $npc;
		1369	$self->message ($msg, $flags);
		1370	}
		1371	}
		1372
		1373	=item $player_object->may ("access")
		1374
		1375	Returns wether the given player is authorized to access resource "access"
		1376	(e.g. "command_wizcast").
		1377
		1378	=cut
		1379
		1380	sub cf::object::player::may {
		1381	my ($self, $access) = @_;
		1382
		1383	$self->flag (cf::FLAG_WIZ) ||
		1384	(ref $cf::CFG{"may_$access"}
		1385	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1386	: $cf::CFG{"may_$access"})
		1387	}
		1388
		1389	=item $player_object->enter_link
		1390
		1391	Freezes the player and moves him/her to a special map (C<{link}>).
		1392
		1393	The player should be reaosnably safe there for short amounts of time. You
		1394	I<MUST> call C<leave_link> as soon as possible, though.
		1395
		1396	=item $player_object->leave_link ($map, $x, $y)
		1397
		1398	Moves the player out of the specila link map onto the given map. If the
		1399	map is not valid (or omitted), the player will be moved back to the
		1400	location he/she was before the call to C<enter_link>, or, if that fails,
		1401	to the emergency map position.
		1402
		1403	Might block.
		1404
		1405	=cut
		1406
		1407	sub cf::object::player::enter_link {
		1408	my ($self) = @_;
		1409
		1410	return if $self->map == $LINK_MAP;
		1411
		1412	$self->{_link_pos} = [$self->map->{path}, $self->x, $self->y]
		1413	if $self->map;
		1414
		1415	$self->enter_map ($LINK_MAP, 20, 20);
		1416	$self->deactivate_recursive;
		1417	}
		1418
		1419	sub cf::object::player::leave_link {
		1420	my ($self, $map, $x, $y) = @_;
		1421
		1422	my $link_pos = delete $self->{_link_pos};
		1423
		1424	unless ($map) {
		1425	# restore original map position
		1426	($map, $x, $y) = @{ $link_pos || [] };
		1427	$map = cf::map::find_map $map;
		1428
		1429	unless ($map) {
		1430	($map, $x, $y) = @$EMERGENCY_POSITION;
		1431	$map = cf::map::find_map $map
		1432	or die "FATAL: cannot load emergency map\n";
		1433	}
		1434	}
		1435
		1436	($x, $y) = (-1, -1)
		1437	unless (defined $x) && (defined $y);
		1438
		1439	# use -1 or undef as default coordinates, not 0, 0
		1440	($x, $y) = ($map->enter_x, $map->enter_y)
		1441	if $x <=0 && $y <= 0;
		1442
		1443	$map->load;
		1444
		1445	$self->activate_recursive;
		1446	$self->enter_map ($map, $x, $y);
		1447	}
		1448
		1449	=item $player_object->goto_map ($map, $x, $y)
		1450
		1451	=cut
		1452
		1453	sub cf::object::player::goto_map {
		1454	my ($self, $path, $x, $y) = @_;
		1455
		1456	$self->enter_link;
		1457
		1458	(Coro::async {
		1459	$path = new cf::path $path;
		1460
		1461	my $map = cf::map::find_map $path->as_string;
		1462	$map = $map->customise_for ($self) if $map;
		1463
		1464	warn "entering ", $map->path, " at ($x, $y)\n"
		1465	if $map;
		1466
		1467	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1468
		1469	$self->leave_link ($map, $x, $y);
		1470	})->prio (1);
		1471	}
		1472
		1473	=item $player_object->enter_exit ($exit_object)
		1474
		1475	=cut
		1476
		1477	sub parse_random_map_params {
		1478	my ($spec) = @_;
		1479
		1480	my $rmp = { # defaults
		1481	xsize => 10,
		1482	ysize => 10,
		1483	};
		1484
		1485	for (split /\n/, $spec) {
		1486	my ($k, $v) = split /\s+/, $_, 2;
		1487
		1488	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1489	}
		1490
		1491	$rmp
		1492	}
		1493
		1494	sub prepare_random_map {
		1495	my ($exit) = @_;
		1496
		1497	# all this does is basically replace the /! path by
		1498	# a new random map path (?random/...) with a seed
		1499	# that depends on the exit object
		1500
		1501	my $rmp = parse_random_map_params $exit->msg;
		1502
		1503	if ($exit->map) {
		1504	$rmp->{region} = $exit->map->region_name;
		1505	$rmp->{origin_map} = $exit->map->path;
		1506	$rmp->{origin_x} = $exit->x;
		1507	$rmp->{origin_y} = $exit->y;
		1508	}
		1509
		1510	$rmp->{random_seed} ||= $exit->random_seed;
		1511
		1512	my $data = cf::to_json $rmp;
		1513	my $md5 = Digest::MD5::md5_hex $data;
		1514
		1515	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1516	aio_write $fh, 0, (length $data), $data, 0;
		1517
		1518	$exit->slaying ("?random/$md5");
		1519	$exit->msg (undef);
		1520	}
		1521	}
		1522
		1523	sub cf::object::player::enter_exit {
		1524	my ($self, $exit) = @_;
		1525
		1526	return unless $self->type == cf::PLAYER;
		1527
		1528	$self->enter_link;
		1529
		1530	(Coro::async {
		1531	unless (eval {
		1532
		1533	prepare_random_map $exit
		1534	if $exit->slaying eq "/!";
		1535
		1536	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1537	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1538
		1539	1;
		1540	}) {
		1541	$self->message ("Something went wrong deep within the crossfire server. "
		1542	. "I'll try to bring you back to the map you were before. "
		1543	. "Please report this to the dungeon master",
		1544	cf::NDI_UNIQUE | cf::NDI_RED);
		1545
		1546	warn "ERROR in enter_exit: $@";
		1547	$self->leave_link;
		1548	}
		1549	})->prio (1);
		1550	}
		1551
		1552	=head3 cf::client
		1553
		1554	=over 4
		1555
		1556	=item $client->send_drawinfo ($text, $flags)
		1557
		1558	Sends a drawinfo packet to the client. Circumvents output buffering so
		1559	should not be used under normal circumstances.
		1560
		1561	=cut
		1562
		1563	sub cf::client::send_drawinfo {
		1564	my ($self, $text, $flags) = @_;
		1565
		1566	utf8::encode $text;
		1567	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1568	}
		1569
		1570
		1571	=item $success = $client->query ($flags, "text", \&cb)
		1572
		1573	Queues a query to the client, calling the given callback with
		1574	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1575	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1576
		1577	Queries can fail, so check the return code. Or don't, as queries will become
		1578	reliable at some point in the future.
		1579
		1580	=cut
		1581
		1582	sub cf::client::query {
		1583	my ($self, $flags, $text, $cb) = @_;
		1584
		1585	return unless $self->state == ST_PLAYING
		1586	|| $self->state == ST_SETUP
		1587	|| $self->state == ST_CUSTOM;
		1588
		1589	$self->state (ST_CUSTOM);
		1590
		1591	utf8::encode $text;
		1592	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1593
		1594	$self->send_packet ($self->{query_queue}[0][0])
		1595	if @{ $self->{query_queue} } == 1;
		1596	}
		1597
		1598	cf::client->attach (
		1599	on_reply => sub {
		1600	my ($ns, $msg) = @_;
		1601
		1602	# this weird shuffling is so that direct followup queries
		1603	# get handled first
		1604	my $queue = delete $ns->{query_queue};
		1605
		1606	(shift @$queue)->[1]->($msg);
		1607
		1608	push @{ $ns->{query_queue} }, @$queue;
		1609
		1610	if (@{ $ns->{query_queue} } == @$queue) {
		1611	if (@$queue) {
		1612	$ns->send_packet ($ns->{query_queue}[0][0]);
		1613	} else {
		1614	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1615	}
		1616	}
		1617	},
		1618	);
		1619
		1620	=item $client->coro (\&cb)
		1621
		1622	Create a new coroutine, running the specified callback. The coroutine will
		1623	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1624	or loss of connection).
		1625
		1626	=cut
		1627
		1628	sub cf::client::coro {
		1629	my ($self, $cb) = @_;
		1630
		1631	my $coro; $coro = async {
214	eval {	1632	eval {
215	unload_extension $_ for @exts;	1633	$cb->();
216	delete $INC{"cf.pm"};
217
218	# don't, removes xs symbols, too
219	#Symbol::delete_package $pkg;
220
221	require cf;
222	};	1634	};
223	warn $@ if $@;	1635	warn $@ if $@;
224	$who->message ($@) if $@;
225	warn "reloaded\n";
226
227	$who->message ("reloaded");
228	} else {
229	$who->message ("Intruder Alert!");
230	}	1636	};
		1637
		1638	$coro->on_destroy (sub {
		1639	delete $self->{_coro}{$coro+0};
		1640	});
		1641
		1642	$self->{_coro}{$coro+0} = $coro;
		1643
		1644	$coro
		1645	}
		1646
		1647	cf::client->attach (
		1648	on_destroy => sub {
		1649	my ($ns) = @_;
		1650
		1651	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1652	},
		1653	);
		1654
		1655	=back
		1656
		1657
		1658	=head2 SAFE SCRIPTING
		1659
		1660	Functions that provide a safe environment to compile and execute
		1661	snippets of perl code without them endangering the safety of the server
		1662	itself. Looping constructs, I/O operators and other built-in functionality
		1663	is not available in the safe scripting environment, and the number of
		1664	functions and methods that can be called is greatly reduced.
		1665
		1666	=cut
		1667
		1668	our $safe = new Safe "safe";
		1669	our $safe_hole = new Safe::Hole;
		1670
		1671	$SIG{FPE} = 'IGNORE';
		1672
		1673	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
		1674
		1675	# here we export the classes and methods available to script code
		1676
		1677	=pod
		1678
		1679	The following fucntions and emthods are available within a safe environment:
		1680
		1681	cf::object contr pay_amount pay_player map
		1682	cf::object::player player
		1683	cf::player peaceful
		1684	cf::map trigger
		1685
		1686	=cut
		1687
		1688	for (
		1689	["cf::object" => qw(contr pay_amount pay_player map)],
		1690	["cf::object::player" => qw(player)],
		1691	["cf::player" => qw(peaceful)],
		1692	["cf::map" => qw(trigger)],
		1693	) {
		1694	no strict 'refs';
		1695	my ($pkg, @funs) = @$_;
		1696	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
		1697	for @funs;
		1698	}
		1699
		1700	=over 4
		1701
		1702	=item @retval = safe_eval $code, [var => value, ...]
		1703
		1704	Compiled and executes the given perl code snippet. additional var/value
		1705	pairs result in temporary local (my) scalar variables of the given name
		1706	that are available in the code snippet. Example:
		1707
		1708	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1709
		1710	=cut
		1711
		1712	sub safe_eval($;@) {
		1713	my ($code, %vars) = @_;
		1714
		1715	my $qcode = $code;
		1716	$qcode =~ s/"/‟/g; # not allowed in #line filenames
		1717	$qcode =~ s/\n/\\n/g;
		1718
		1719	local $_;
		1720	local @safe::cf::_safe_eval_args = values %vars;
		1721
		1722	my $eval =
		1723	"do {\n"
		1724	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
		1725	. "#line 0 \"{$qcode}\"\n"
		1726	. $code
		1727	. "\n}"
		1728	;
		1729
		1730	sub_generation_inc;
		1731	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
		1732	sub_generation_inc;
		1733
		1734	if ($@) {
		1735	warn "$@";
		1736	warn "while executing safe code '$code'\n";
		1737	warn "with arguments " . (join " ", %vars) . "\n";
		1738	}
		1739
		1740	wantarray ? @res : $res[0]
		1741	}
		1742
		1743	=item cf::register_script_function $function => $cb
		1744
		1745	Register a function that can be called from within map/npc scripts. The
		1746	function should be reasonably secure and should be put into a package name
		1747	like the extension.
		1748
		1749	Example: register a function that gets called whenever a map script calls
		1750	C<rent::overview>, as used by the C<rent> extension.
		1751
		1752	cf::register_script_function "rent::overview" => sub {
		1753	...
		1754	};
		1755
		1756	=cut
		1757
		1758	sub register_script_function {
		1759	my ($fun, $cb) = @_;
		1760
		1761	no strict 'refs';
		1762	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		1763	}
		1764
		1765	=back
		1766
		1767	=cut
		1768
		1769	#############################################################################
		1770
		1771	=head2 EXTENSION DATABASE SUPPORT
		1772
		1773	Crossfire maintains a very simple database for extension use. It can
		1774	currently store anything that can be serialised using Storable, which
		1775	excludes objects.
		1776
		1777	The parameter C<$family> should best start with the name of the extension
		1778	using it, it should be unique.
		1779
		1780	=over 4
		1781
		1782	=item $hashref = cf::db_get $family
		1783
		1784	Return a hashref for use by the extension C<$family>, which can be
		1785	modified. After modifications, you have to call C<cf::db_dirty> or
		1786	C<cf::db_sync>.
		1787
		1788	=item $value = cf::db_get $family => $key
		1789
		1790	Returns a single value from the database
		1791
		1792	=item cf::db_put $family => $hashref
		1793
		1794	Stores the given family hashref into the database. Updates are delayed, if
		1795	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1796
		1797	=item cf::db_put $family => $key => $value
		1798
		1799	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1800	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1801
		1802	=item cf::db_dirty
		1803
		1804	Marks the database as dirty, to be updated at a later time.
		1805
		1806	=item cf::db_sync
		1807
		1808	Immediately write the database to disk I<if it is dirty>.
		1809
		1810	=cut
		1811
		1812	our $DB;
		1813
		1814	{
		1815	my $path = cf::localdir . "/database.pst";
		1816
		1817	sub db_load() {
		1818	warn "loading database $path\n";#d# remove later
		1819	$DB = stat $path ? Storable::retrieve $path : { };
		1820	}
		1821
		1822	my $pid;
		1823
		1824	sub db_save() {
		1825	warn "saving database $path\n";#d# remove later
		1826	waitpid $pid, 0 if $pid;
		1827	if (0 == ($pid = fork)) {
		1828	$DB->{_meta}{version} = 1;
		1829	Storable::nstore $DB, "$path~";
		1830	rename "$path~", $path;
		1831	cf::_exit 0 if defined $pid;
		1832	}
		1833	}
		1834
		1835	my $dirty;
		1836
		1837	sub db_sync() {
		1838	db_save if $dirty;
		1839	undef $dirty;
		1840	}
		1841
		1842	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1843	db_sync;
		1844	});
		1845
		1846	sub db_dirty() {
		1847	$dirty = 1;
		1848	$idle->start;
		1849	}
		1850
		1851	sub db_get($;$) {
		1852	@_ >= 2
		1853	? $DB->{$_[0]}{$_[1]}
		1854	: ($DB->{$_[0]} ||= { })
		1855	}
		1856
		1857	sub db_put($$;$) {
		1858	if (@_ >= 3) {
		1859	$DB->{$_[0]}{$_[1]} = $_[2];
		1860	} else {
		1861	$DB->{$_[0]} = $_[1];
		1862	}
		1863	db_dirty;
		1864	}
		1865
		1866	cf::global->attach (
		1867	prio => 10000,
		1868	on_cleanup => sub {
		1869	db_sync;
		1870	},
		1871	);
		1872	}
		1873
		1874	#############################################################################
		1875	# the server's main()
		1876
		1877	sub cfg_load {
		1878	open my $fh, "<:utf8", cf::confdir . "/config"
		1879	or return;
		1880
		1881	local $/;
		1882	*CFG = YAML::Syck::Load <$fh>;
		1883	}
		1884
		1885	sub main {
		1886	# we must not ever block the main coroutine
		1887	local $Coro::idle = sub {
		1888	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		1889	(Coro::unblock_sub {
		1890	Event::one_event;
		1891	})->();
		1892	};
		1893
		1894	cfg_load;
		1895	db_load;
		1896	load_extensions;
		1897	Event::loop;
		1898	}
		1899
		1900	#############################################################################
		1901	# initialisation
		1902
		1903	sub reload() {
		1904	# can/must only be called in main
		1905	if ($Coro::current != $Coro::main) {
		1906	warn "can only reload from main coroutine\n";
		1907	return;
		1908	}
		1909
		1910	warn "reloading...";
		1911
		1912	local $FREEZE = 1;
		1913	cf::emergency_save;
		1914
		1915	eval {
		1916	# if anything goes wrong in here, we should simply crash as we already saved
		1917
		1918	# cancel all watchers
		1919	for (Event::all_watchers) {
		1920	$_->cancel if $_->data & WF_AUTOCANCEL;
		1921	}
		1922
		1923	# cancel all extension coros
		1924	$_->cancel for values %EXT_CORO;
		1925	%EXT_CORO = ();
		1926
		1927	# unload all extensions
		1928	for (@exts) {
		1929	warn "unloading <$_>";
		1930	unload_extension $_;
		1931	}
		1932
		1933	# unload all modules loaded from $LIBDIR
		1934	while (my ($k, $v) = each %INC) {
		1935	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1936
		1937	warn "removing <$k>";
		1938	delete $INC{$k};
		1939
		1940	$k =~ s/\.pm$//;
		1941	$k =~ s/\//::/g;
		1942
		1943	if (my $cb = $k->can ("unload_module")) {
		1944	$cb->();
		1945	}
		1946
		1947	Symbol::delete_package $k;
		1948	}
		1949
		1950	# sync database to disk
		1951	cf::db_sync;
		1952	IO::AIO::flush;
		1953
		1954	# get rid of safe::, as good as possible
		1955	Symbol::delete_package "safe::$_"
		1956	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		1957
		1958	# remove register_script_function callbacks
		1959	# TODO
		1960
		1961	# unload cf.pm "a bit"
		1962	delete $INC{"cf.pm"};
		1963
		1964	# don't, removes xs symbols, too,
		1965	# and global variables created in xs
		1966	#Symbol::delete_package __PACKAGE__;
		1967
		1968	# reload cf.pm
		1969	warn "reloading cf.pm";
		1970	require cf;
		1971	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		1972
		1973	# load config and database again
		1974	cf::cfg_load;
		1975	cf::db_load;
		1976
		1977	# load extensions
		1978	warn "load extensions";
		1979	cf::load_extensions;
		1980
		1981	# reattach attachments to objects
		1982	warn "reattach";
		1983	_global_reattach;
		1984	};
		1985
		1986	if ($@) {
		1987	warn $@;
		1988	warn "error while reloading, exiting.";
		1989	exit 1;
		1990	}
		1991
		1992	warn "reloaded successfully";
231	};	1993	};
232		1994
233	#############################################################################	1995	#############################################################################
234	# extcmd framework, basically convert ext <id> <pkg> arg1 args
235	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
236		1996
237	sub on_extcmd {	1997	unless ($LINK_MAP) {
		1998	$LINK_MAP = cf::map::new;
		1999
		2000	$LINK_MAP->width (41);
		2001	$LINK_MAP->height (41);
		2002	$LINK_MAP->alloc;
		2003	$LINK_MAP->path ("{link}");
		2004	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2005	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2006
		2007	# dirty hack because... archetypes are not yet loaded
		2008	Event->timer (
		2009	after => 2,
		2010	cb => sub {
		2011	$_[0]->w->cancel;
		2012
		2013	# provide some exits "home"
		2014	my $exit = cf::object::new "exit";
		2015
		2016	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2017	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2018	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2019
		2020	$LINK_MAP->insert ($exit->clone, 19, 19);
		2021	$LINK_MAP->insert ($exit->clone, 19, 20);
		2022	$LINK_MAP->insert ($exit->clone, 19, 21);
		2023	$LINK_MAP->insert ($exit->clone, 20, 19);
		2024	$LINK_MAP->insert ($exit->clone, 20, 21);
		2025	$LINK_MAP->insert ($exit->clone, 21, 19);
		2026	$LINK_MAP->insert ($exit->clone, 21, 20);
		2027	$LINK_MAP->insert ($exit->clone, 21, 21);
		2028
		2029	$exit->destroy;
		2030	});
		2031
		2032	$LINK_MAP->{deny_save} = 1;
		2033	$LINK_MAP->{deny_reset} = 1;
		2034
		2035	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2036	}
		2037
		2038	register "<global>", __PACKAGE__;
		2039
		2040	register_command "reload" => sub {
238	my ($pl, $buf) = @_;	2041	my ($who, $arg) = @_;
239		2042
240	my ($id, $pkg, $name, $data) = split / /, $buf, 4;	2043	if ($who->flag (FLAG_WIZ)) {
241		2044	$who->message ("start of reload.");
242	if (my $method = "cf::ext::$pkg"->can ("on_extcmd_$name")) {	2045	reload;
243	$method->($pl, $id, $buf);	2046	$who->message ("end of reload.");
244	}	2047	}
245	}
246
247	#############################################################################
248	# load/save/clean perl data associated with a map
249
250	*on_mapclean = sub {
251	my ($map) = @_;
252
253	my $path = $map->tmpname;
254	defined $path or return;
255
256	unlink "$path.cfperl";
257	};	2048	};
258		2049
259	*on_mapin =	2050	unshift @INC, $LIBDIR;
260	*on_mapload = sub {
261	my ($map) = @_;
262		2051
263	my $path = $map->tmpname;	2052	$TICK_WATCHER = Event->timer (
264	$path = $map->path unless defined $path;	2053	reentrant => 0,
265		2054	prio => 0,
266	open my $fh, "<:raw", "$path.cfperl"	2055	at => $NEXT_TICK || $TICK,
267	or return; # no perl data	2056	data => WF_AUTOCANCEL,
268		2057	cb => sub {
269	my $data = Storable::thaw do { local $/; <$fh> };	2058	unless ($FREEZE) {
270		2059	cf::server_tick; # one server iteration
271	$data->{version} <= 1	2060	$RUNTIME += $TICK;
272	or return; # too new
273
274	$map->_set_obs ($data->{obs});
275	};
276
277	*on_mapout = sub {
278	my ($map) = @_;
279
280	my $path = $map->tmpname;
281	$path = $map->path unless defined $path;
282
283	my $obs = $map->_get_obs;
284
285	if (defined $obs) {
286	open my $fh, ">:raw", "$path.cfperl"
287	or die "$path.cfperl: $!";
288
289	stat $path;
290
291	print $fh Storable::nfreeze {
292	size => (stat _)[7],
293	time => (stat _)[9],
294	version => 1,
295	obs => $obs,
296	};	2061	}
297		2062
298	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*	2063	$NEXT_TICK += $TICK;
299	} else {	2064
300	unlink "$path.cfperl";	2065	# if we are delayed by four ticks or more, skip them all
		2066	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
		2067
		2068	$TICK_WATCHER->at ($NEXT_TICK);
		2069	$TICK_WATCHER->start;
301	}	2070	},
302	};	2071	);
303		2072
304	#############################################################################	2073	IO::AIO::max_poll_time $TICK * 0.2;
305	# load/save perl data associated with player->ob objects
306		2074
307	*on_player_load = sub {	2075	Event->io (
308	my ($ob, $path) = @_;	2076	fd => IO::AIO::poll_fileno,
		2077	poll => 'r',
		2078	prio => 5,
		2079	data => WF_AUTOCANCEL,
		2080	cb => \&IO::AIO::poll_cb,
		2081	);
309		2082
310	if (open my $fh, "<:raw", "$path.cfperl") {	2083	Event->timer (
311		2084	data => WF_AUTOCANCEL,
312	#d##TODO#remove	2085	after => 0,
313		2086	interval => 10,
314	my $data = Storable::thaw do { local $/; <$fh> };	2087	cb => sub {
315		2088	(Coro::unblock_sub {
316	$data->{version} <= 1	2089	write_runtime
317	or return; # too new	2090	or warn "ERROR: unable to write runtime file: $!";
318		2091	})->();
319	%$ob = %{$data->{ob}};
320	return;
321	}	2092	},
322		2093	);
323	for my $o ($ob, $ob->inv) {
324	if (my $value = $o->get_ob_key_value ("_perl_data")) {
325	$o->set_ob_key_value ("_perl_data");
326
327	%$o = %{ Storable::thaw pack "H*", $value };
328	}
329	}
330	};
331
332	*on_player_save = sub {
333	my ($ob, $path) = @_;
334
335	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
336	for grep %$_, $ob, $ob->inv;
337
338	unlink "$path.cfperl";#d##TODO#remove
339	};
340
341	register "<global>", __PACKAGE__;
342
343	load_extensions;
344		2094
345	1	2095	1
346		2096

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