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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.71 by root, Sun Oct 1 10:59:30 2006 UTC vs.
Revision 1.144 by root, Sun Jan 7 18:01:10 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.3 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.31 ();
		23	use YAML::Syck ();
10	use Time::HiRes;	24	use Time::HiRes;
11	use Event;	25
12	$Event::Eval = 1; # no idea why this is required, but it is	26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		27
14	use strict;	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		29	$YAML::Syck::ImplicitUnicode = 1;
15		30
16	_init_vars;	31	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
18	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
19	our @EVENT;	39	our @EVENT;
20	our $LIBDIR = maps_directory "perl";	40	our $LIBDIR = datadir . "/ext";
21		41
22	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	43	our $TICK_WATCHER;
24	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
25		46
26	our %CFG;	47	our %CFG;
27		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %PLAYER; # all users
		53	our %MAP; # all maps
		54	our $LINK_MAP; # the special {link} map
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO; # coroutines bound to extensions
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($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	our $EMERGENCY_POSITION;
		77
28	#############################################################################	78	#############################################################################
29		79
30	=head2 GLOBAL VARIABLES	80	=head2 GLOBAL VARIABLES
31		81
32	=over 4	82	=over 4
		83
		84	=item $cf::UPTIME
		85
		86	The timestamp of the server start (so not actually an uptime).
		87
		88	=item $cf::RUNTIME
		89
		90	The time this server has run, starts at 0 and is increased by $cf::TICK on
		91	every server tick.
33		92
34	=item $cf::LIBDIR	93	=item $cf::LIBDIR
35		94
36	The perl library directory, where extensions and cf-specific modules can	95	The perl library directory, where extensions and cf-specific modules can
37	be found. It will be added to C<@INC> automatically.	96	be found. It will be added to C<@INC> automatically.
		97
		98	=item $cf::NOW
		99
		100	The time of the last (current) server tick.
38		101
39	=item $cf::TICK	102	=item $cf::TICK
40		103
41	The interval between server ticks, in seconds.	104	The interval between server ticks, in seconds.
42		105
…		…
50	=cut	113	=cut
51		114
52	BEGIN {	115	BEGIN {
53	*CORE::GLOBAL::warn = sub {	116	*CORE::GLOBAL::warn = sub {
54	my $msg = join "", @_;	117	my $msg = join "", @_;
		118	utf8::encode $msg;
		119
55	$msg .= "\n"	120	$msg .= "\n"
56	unless $msg =~ /\n$/;	121	unless $msg =~ /\n$/;
57		122
58	print STDERR "cfperl: $msg";
59	LOG llevError, "cfperl: $msg";	123	LOG llevError, "cfperl: $msg";
60	};	124	};
61	}	125	}
62		126
		127	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		128	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		129	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		130	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		131	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
63	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	132	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
64		133
65	# we bless all objects into (empty) derived classes to force a method lookup	134	# we bless all objects into (empty) derived classes to force a method lookup
66	# within the Safe compartment.	135	# within the Safe compartment.
67	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	136	for my $pkg (qw(
		137	cf::global cf::attachable
		138	cf::object cf::object::player
		139	cf::client cf::player
		140	cf::arch cf::living
		141	cf::map cf::party cf::region
		142	)) {
68	no strict 'refs';	143	no strict 'refs';
69	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	144	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
70	}	145	}
71		146
72	$Event::DIED = sub {	147	$Event::DIED = sub {
…		…
74	};	149	};
75		150
76	my %ext_pkg;	151	my %ext_pkg;
77	my @exts;	152	my @exts;
78	my @hook;	153	my @hook;
79	my %command;
80	my %extcmd;
81		154
82	=head2 UTILITY FUNCTIONS	155	=head2 UTILITY FUNCTIONS
83		156
84	=over 4	157	=over 4
85		158
…		…
107	sub to_json($) {	180	sub to_json($) {
108	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	181	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
109	JSON::Syck::Dump $_[0]	182	JSON::Syck::Dump $_[0]
110	}	183	}
111		184
		185	=item cf::lock_wait $string
		186
		187	Wait until the given lock is available. See cf::lock_acquire.
		188
		189	=item my $lock = cf::lock_acquire $string
		190
		191	Wait until the given lock is available and then acquires it and returns
		192	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		193	for example when the coroutine gets canceled), the lock is automatically
		194	returned.
		195
		196	Lock names should begin with a unique identifier (for example, cf::map::find
		197	uses map_find and cf::map::load uses map_load).
		198
		199	=cut
		200
		201	our %LOCK;
		202
		203	sub lock_wait($) {
		204	my ($key) = @_;
		205
		206	# wait for lock, if any
		207	while ($LOCK{$key}) {
		208	push @{ $LOCK{$key} }, $Coro::current;
		209	Coro::schedule;
		210	}
		211	}
		212
		213	sub lock_acquire($) {
		214	my ($key) = @_;
		215
		216	# wait, to be sure we are not locked
		217	lock_wait $key;
		218
		219	$LOCK{$key} = [];
		220
		221	Coro::guard {
		222	# wake up all waiters, to be on the safe side
		223	$_->ready for @{ delete $LOCK{$key} };
		224	}
		225	}
		226
		227	sub freeze_mainloop {
		228	return unless $TICK_WATCHER->is_active;
		229
		230	my $guard = Coro::guard { $TICK_WATCHER->start };
		231	$TICK_WATCHER->stop;
		232	$guard
		233	}
		234
		235	=item cf::async { BLOCK }
		236
		237	Currently the same as Coro::async_pool, meaning you cannot use
		238	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		239	thing you are allowed to do is call C<prio> on it.
		240
		241	=cut
		242
		243	BEGIN { *async = \&Coro::async_pool }
		244
		245	=item cf::sync_job { BLOCK }
		246
		247	The design of crossfire+ requires that the main coro ($Coro::main) is
		248	always able to handle events or runnable, as crossfire+ is only partly
		249	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		250
		251	If it must be done, put the blocking parts into C<sync_job>. This will run
		252	the given BLOCK in another coroutine while waiting for the result. The
		253	server will be frozen during this time, so the block should either finish
		254	fast or be very important.
		255
		256	=cut
		257
		258	sub sync_job(&) {
		259	my ($job) = @_;
		260
		261	if ($Coro::current == $Coro::main) {
		262	# this is the main coro, too bad, we have to block
		263	# till the operation succeeds, freezing the server :/
		264
		265	# TODO: use suspend/resume instead
		266	# (but this is cancel-safe)
		267	my $freeze_guard = freeze_mainloop;
		268
		269	my $busy = 1;
		270	my @res;
		271
		272	(async {
		273	@res = eval { $job->() };
		274	warn $@ if $@;
		275	undef $busy;
		276	})->prio (Coro::PRIO_MAX);
		277
		278	while ($busy) {
		279	Coro::cede or Event::one_event;
		280	}
		281
		282	wantarray ? @res : $res[0]
		283	} else {
		284	# we are in another coroutine, how wonderful, everything just works
		285
		286	$job->()
		287	}
		288	}
		289
		290	=item $coro = cf::async_ext { BLOCK }
		291
		292	Like async, but this coro is automcatially being canceled when the
		293	extension calling this is being unloaded.
		294
		295	=cut
		296
		297	sub async_ext(&) {
		298	my $cb = shift;
		299
		300	my $coro = &Coro::async ($cb);
		301
		302	$coro->on_destroy (sub {
		303	delete $EXT_CORO{$coro+0};
		304	});
		305	$EXT_CORO{$coro+0} = $coro;
		306
		307	$coro
		308	}
		309
		310	sub write_runtime {
		311	my $runtime = cf::localdir . "/runtime";
		312
		313	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		314	or return;
		315
		316	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		317	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		318	and return;
		319
		320	aio_fsync $fh
		321	and return;
		322
		323	close $fh
		324	or return;
		325
		326	aio_rename "$runtime~", $runtime
		327	and return;
		328
		329	1
		330	}
		331
112	=back	332	=back
113		333
114	=cut	334	=cut
115		335
116	#############################################################################	336	#############################################################################
117		337
118	=head2 EVENTS AND OBJECT ATTACHMENTS	338	package cf::path;
		339
		340	sub new {
		341	my ($class, $path, $base) = @_;
		342
		343	$path = $path->as_string if ref $path;
		344
		345	my $self = bless { }, $class;
		346
		347	# {... are special paths that are not touched
		348	# ?xxx/... are special absolute paths
		349	# ?random/... random maps
		350	# /! non-realised random map exit
		351	# /... normal maps
		352	# ~/... per-player maps without a specific player (DO NOT USE)
		353	# ~user/... per-player map of a specific user
		354
		355	if ($path =~ /^{/) {
		356	# fine as it is
		357	} elsif ($path =~ s{^\?random/}{}) {
		358	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		359	$self->{random} = cf::from_json $data;
		360	} else {
		361	if ($path =~ s{^~([^/]+)?}{}) {
		362	$self->{user_rel} = 1;
		363
		364	if (defined $1) {
		365	$self->{user} = $1;
		366	} elsif ($base =~ m{^~([^/]+)/}) {
		367	$self->{user} = $1;
		368	} else {
		369	warn "cannot resolve user-relative path without user <$path,$base>\n";
		370	}
		371	} elsif ($path =~ /^\//) {
		372	# already absolute
		373	} else {
		374	$base =~ s{[^/]+/?$}{};
		375	return $class->new ("$base/$path");
		376	}
		377
		378	for ($path) {
		379	redo if s{/\.?/}{/};
		380	redo if s{/[^/]+/\.\./}{/};
		381	}
		382	}
		383
		384	$self->{path} = $path;
		385
		386	$self
		387	}
		388
		389	# the name / primary key / in-game path
		390	sub as_string {
		391	my ($self) = @_;
		392
		393	$self->{user_rel} ? "~$self->{user}$self->{path}"
		394	: $self->{random} ? "?random/$self->{path}"
		395	: $self->{path}
		396	}
		397
		398	# the displayed name, this is a one way mapping
		399	sub visible_name {
		400	my ($self) = @_;
		401
		402	# if (my $rmp = $self->{random}) {
		403	# # todo: be more intelligent about this
		404	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		405	# } else {
		406	$self->as_string
		407	# }
		408	}
		409
		410	# escape the /'s in the path
		411	sub _escaped_path {
		412	# ∕ is U+2215
		413	(my $path = $_[0]{path}) =~ s/\//∕/g;
		414	$path
		415	}
		416
		417	# the original (read-only) location
		418	sub load_path {
		419	my ($self) = @_;
		420
		421	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		422	}
		423
		424	# the temporary/swap location
		425	sub save_path {
		426	my ($self) = @_;
		427
		428	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		429	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		430	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		431	}
		432
		433	# the unique path, might be eq to save_path
		434	sub uniq_path {
		435	my ($self) = @_;
		436
		437	$self->{user_rel} || $self->{random}
		438	? undef
		439	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		440	}
		441
		442	# return random map parameters, or undef
		443	sub random_map_params {
		444	my ($self) = @_;
		445
		446	$self->{random}
		447	}
		448
		449	# this is somewhat ugly, but style maps do need special treatment
		450	sub is_style_map {
		451	$_[0]{path} =~ m{^/styles/}
		452	}
		453
		454	package cf;
		455
		456	#############################################################################
		457
		458	=head2 ATTACHABLE OBJECTS
		459
		460	Many objects in crossfire are so-called attachable objects. That means you can
		461	attach callbacks/event handlers (a collection of which is called an "attachment")
		462	to it. All such attachable objects support the following methods.
		463
		464	In the following description, CLASS can be any of C<global>, C<object>
		465	C<player>, C<client> or C<map> (i.e. the attachable objects in
		466	crossfire+).
119		467
120	=over 4	468	=over 4
121		469
122	=item $object->attach ($attachment, key => $value...)
123
124	=item $object->detach ($attachment)
125
126	Attach/detach a pre-registered attachment to an object.
127
128	=item $player->attach ($attachment, key => $value...)
129
130	=item $player->detach ($attachment)
131
132	Attach/detach a pre-registered attachment to a player.
133
134	=item $map->attach ($attachment, key => $value...)	470	=item $attachable->attach ($attachment, key => $value...)
135		471
136	=item $map->detach ($attachment)	472	=item $attachable->detach ($attachment)
137		473
138	Attach/detach a pre-registered attachment to a map.	474	Attach/detach a pre-registered attachment to a specific object and give it
		475	the specified key/value pairs as arguments.
139		476
140	=item $bool = $object->attached ($name)	477	Example, attach a minesweeper attachment to the given object, making it a
		478	10x10 minesweeper game:
141		479
142	=item $bool = $player->attached ($name)	480	$obj->attach (minesweeper => width => 10, height => 10);
143		481
144	=item $bool = $map->attached ($name)	482	=item $bool = $attachable->attached ($name)
145		483
146	Checks wether the named attachment is currently attached to the object.	484	Checks wether the named attachment is currently attached to the object.
147		485
148	=item cf::attach_global ...	486	=item cf::CLASS->attach ...
149		487
150	Attach handlers for global events.	488	=item cf::CLASS->detach ...
151		489
152	This and all following C<attach_*>-functions expect any number of the	490	Define an anonymous attachment and attach it to all objects of the given
153	following handler/hook descriptions:	491	CLASS. See the next function for an explanation of its arguments.
		492
		493	You can attach to global events by using the C<cf::global> class.
		494
		495	Example, log all player logins:
		496
		497	cf::player->attach (
		498	on_login => sub {
		499	my ($pl) = @_;
		500	...
		501	},
		502	);
		503
		504	Example, attach to the jeweler skill:
		505
		506	cf::object->attach (
		507	type => cf::SKILL,
		508	subtype => cf::SK_JEWELER,
		509	on_use_skill => sub {
		510	my ($sk, $ob, $part, $dir, $msg) = @_;
		511	...
		512	},
		513	);
		514
		515	=item cf::CLASS::attachment $name, ...
		516
		517	Register an attachment by C<$name> through which attachable objects of the
		518	given CLASS can refer to this attachment.
		519
		520	Some classes such as crossfire maps and objects can specify attachments
		521	that are attached at load/instantiate time, thus the need for a name.
		522
		523	These calls expect any number of the following handler/hook descriptions:
154		524
155	=over 4	525	=over 4
156		526
157	=item prio => $number	527	=item prio => $number
158		528
…		…
160	by another C<prio> setting). Lower priority handlers get executed	530	by another C<prio> setting). Lower priority handlers get executed
161	earlier. The default priority is C<0>, and many built-in handlers are	531	earlier. The default priority is C<0>, and many built-in handlers are
162	registered at priority C<-1000>, so lower priorities should not be used	532	registered at priority C<-1000>, so lower priorities should not be used
163	unless you know what you are doing.	533	unless you know what you are doing.
164		534
		535	=item type => $type
		536
		537	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		538	given type of objects only (the additional parameter C<subtype> can be
		539	used to further limit to the given subtype).
		540
165	=item on_I<event> => \&cb	541	=item on_I<event> => \&cb
166		542
167	Call the given code reference whenever the named event happens (event is	543	Call the given code reference whenever the named event happens (event is
168	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	544	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
169	handlers are recognised generally depends on the type of object these	545	handlers are recognised generally depends on the type of object these
…		…
178	package and register them. Only handlers for eevents supported by the	554	package and register them. Only handlers for eevents supported by the
179	object/class are recognised.	555	object/class are recognised.
180		556
181	=back	557	=back
182		558
183	=item cf::attach_to_type $object_type, $subtype, ...	559	Example, define an attachment called "sockpuppet" that calls the given
		560	event handler when a monster attacks:
184		561
185	Attach handlers for a specific object type (e.g. TRANSPORT) and	562	cf::object::attachment sockpuppet =>
186	subtype. If C<$subtype> is zero or undef, matches all objects of the given	563	on_skill_attack => sub {
187	type.	564	my ($self, $victim) = @_;
188		565	...
189	=item cf::attach_to_objects ...
190
191	Attach handlers to all objects. Do not use this except for debugging or
192	very rare events, as handlers are (obviously) called for I<all> objects in
193	the game.
194
195	=item cf::attach_to_players ...
196
197	Attach handlers to all players.
198
199	=item cf::attach_to_maps ...
200
201	Attach handlers to all maps.
202
203	=item cf:register_attachment $name, ...
204
205	Register an attachment by name through which objects can refer to this
206	attachment.
207
208	=item cf:register_player_attachment $name, ...
209
210	Register an attachment by name through which players can refer to this
211	attachment.
212
213	=item cf:register_map_attachment $name, ...
214
215	Register an attachment by name through which maps can refer to this
216	attachment.
217
218	=cut
219
220	# the following variables are defined in .xs and must not be re-created
221	our @CB_GLOBAL = (); # registry for all global events
222	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
223	our @CB_PLAYER = ();
224	our @CB_TYPE = (); # registry for type (cf-object class) based events
225	our @CB_MAP = ();
226
227	my %attachment;
228
229	sub _attach_cb($\%$$$) {
230	my ($registry, $undo, $event, $prio, $cb) = @_;
231
232	use sort 'stable';
233
234	$cb = [$prio, $cb];
235
236	@{$registry->[$event]} = sort
237	{ $a->[0] cmp $b->[0] }
238	@{$registry->[$event] || []}, $cb;
239
240	push @{$undo->{cb}}, [$event, $cb];
241	}
242
243	# attach handles attaching event callbacks
244	# the only thing the caller has to do is pass the correct
245	# registry (== where the callback attaches to).
246	sub _attach(\@$@) {
247	my ($registry, $klass, @arg) = @_;
248
249	my $prio = 0;
250
251	my %undo = (
252	registry => $registry,
253	cb => [],
254	);
255
256	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
257
258	while (@arg) {
259	my $type = shift @arg;
260
261	if ($type eq "prio") {
262	$prio = shift @arg;
263
264	} elsif ($type eq "package") {
265	my $pkg = shift @arg;
266
267	while (my ($name, $id) = each %cb_id) {
268	if (my $cb = $pkg->can ($name)) {
269	_attach_cb $registry, %undo, $id, $prio, $cb;
270	}
271	}	566	}
272
273	} elsif (exists $cb_id{$type}) {
274	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
275
276	} elsif (ref $type) {
277	warn "attaching objects not supported, ignoring.\n";
278
279	} else {
280	shift @arg;
281	warn "attach argument '$type' not supported, ignoring.\n";
282	}
283	}
284
285	\%undo
286	}
287
288	sub _attach_attachment {
289	my ($obj, $name, %arg) = @_;
290
291	return if exists $obj->{_attachment}{$name};
292
293	my $res;
294
295	if (my $attach = $attachment{$name}) {
296	my $registry = $obj->registry;
297
298	for (@$attach) {
299	my ($klass, @attach) = @$_;
300	$res = _attach @$registry, $klass, @attach;
301	}
302
303	$obj->{$name} = \%arg;
304	} else {
305	warn "object uses attachment '$name' that is not available, postponing.\n";
306	}
307
308	$obj->{_attachment}{$name} = undef;
309
310	$res->{attachment} = $name;
311	$res
312	}
313
314	*cf::object::attach =
315	*cf::player::attach =
316	*cf::map::attach = sub {
317	my ($obj, $name, %arg) = @_;
318
319	_attach_attachment $obj, $name, %arg;
320	};
321
322	# all those should be optimised
323	*cf::object::detach =
324	*cf::player::detach =
325	*cf::map::detach = sub {
326	my ($obj, $name) = @_;
327
328	delete $obj->{_attachment}{$name};
329	reattach ($obj);
330	};
331
332	*cf::object::attached =
333	*cf::player::attached =
334	*cf::map::attached = sub {
335	my ($obj, $name) = @_;
336
337	exists $obj->{_attachment}{$name}
338	};
339
340	sub attach_global {
341	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
342	}
343
344	sub attach_to_type {
345	my $type = shift;
346	my $subtype = shift;
347
348	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
349	}
350
351	sub attach_to_objects {
352	_attach @CB_OBJECT, KLASS_OBJECT, @_
353	}
354
355	sub attach_to_players {
356	_attach @CB_PLAYER, KLASS_PLAYER, @_
357	}
358
359	sub attach_to_maps {
360	_attach @CB_MAP, KLASS_MAP, @_
361	}
362
363	sub register_attachment {
364	my $name = shift;
365
366	$attachment{$name} = [[KLASS_OBJECT, @_]];
367	}
368
369	sub register_player_attachment {
370	my $name = shift;
371
372	$attachment{$name} = [[KLASS_PLAYER, @_]];
373	}
374
375	sub register_map_attachment {
376	my $name = shift;
377
378	$attachment{$name} = [[KLASS_MAP, @_]];
379	}
380
381	our $override;
382	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
383
384	sub override {
385	$override = 1;
386	@invoke_results = ();
387	}
388
389	sub do_invoke {
390	my $event = shift;
391	my $callbacks = shift;
392
393	@invoke_results = ();
394
395	local $override;
396
397	for (@$callbacks) {
398	eval { &{$_->[1]} };
399
400	if ($@) {
401	warn "$@";
402	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
403	override;
404	}
405
406	return 1 if $override;
407	}
408
409	0	567	}
410	}
411		568
412	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	569	=item $attachable->valid
413
414	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
415
416	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
417
418	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
419
420	Generate a global/object/player/map-specific event with the given arguments.
421
422	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
423	removed in future versions), and there is no public API to access override
424	results (if you must, access C<@cf::invoke_results> directly).
425
426	=back
427
428	=cut
429
430	#############################################################################
431
432	=head2 METHODS VALID FOR ALL CORE OBJECTS
433
434	=over 4
435
436	=item $object->valid, $player->valid, $map->valid
437		570
438	Just because you have a perl object does not mean that the corresponding	571	Just because you have a perl object does not mean that the corresponding
439	C-level object still exists. If you try to access an object that has no	572	C-level object still exists. If you try to access an object that has no
440	valid C counterpart anymore you get an exception at runtime. This method	573	valid C counterpart anymore you get an exception at runtime. This method
441	can be used to test for existence of the C object part without causing an	574	can be used to test for existence of the C object part without causing an
442	exception.	575	exception.
443		576
		577	=cut
		578
		579	# the following variables are defined in .xs and must not be re-created
		580	our @CB_GLOBAL = (); # registry for all global events
		581	our @CB_ATTACHABLE = (); # registry for all attachables
		582	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		583	our @CB_PLAYER = ();
		584	our @CB_CLIENT = ();
		585	our @CB_TYPE = (); # registry for type (cf-object class) based events
		586	our @CB_MAP = ();
		587
		588	my %attachment;
		589
		590	sub _attach_cb($$$$) {
		591	my ($registry, $event, $prio, $cb) = @_;
		592
		593	use sort 'stable';
		594
		595	$cb = [$prio, $cb];
		596
		597	@{$registry->[$event]} = sort
		598	{ $a->[0] cmp $b->[0] }
		599	@{$registry->[$event] || []}, $cb;
		600	}
		601
		602	# hack
		603	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		604
		605	# attach handles attaching event callbacks
		606	# the only thing the caller has to do is pass the correct
		607	# registry (== where the callback attaches to).
		608	sub _attach {
		609	my ($registry, $klass, @arg) = @_;
		610
		611	my $object_type;
		612	my $prio = 0;
		613	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		614
		615	#TODO: get rid of this hack
		616	if ($attachable_klass{$klass}) {
		617	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		618	}
		619
		620	while (@arg) {
		621	my $type = shift @arg;
		622
		623	if ($type eq "prio") {
		624	$prio = shift @arg;
		625
		626	} elsif ($type eq "type") {
		627	$object_type = shift @arg;
		628	$registry = $CB_TYPE[$object_type] ||= [];
		629
		630	} elsif ($type eq "subtype") {
		631	defined $object_type or Carp::croak "subtype specified without type";
		632	my $object_subtype = shift @arg;
		633	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		634
		635	} elsif ($type eq "package") {
		636	my $pkg = shift @arg;
		637
		638	while (my ($name, $id) = each %cb_id) {
		639	if (my $cb = $pkg->can ($name)) {
		640	_attach_cb $registry, $id, $prio, $cb;
		641	}
		642	}
		643
		644	} elsif (exists $cb_id{$type}) {
		645	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		646
		647	} elsif (ref $type) {
		648	warn "attaching objects not supported, ignoring.\n";
		649
		650	} else {
		651	shift @arg;
		652	warn "attach argument '$type' not supported, ignoring.\n";
		653	}
		654	}
		655	}
		656
		657	sub _object_attach {
		658	my ($obj, $name, %arg) = @_;
		659
		660	return if exists $obj->{_attachment}{$name};
		661
		662	if (my $attach = $attachment{$name}) {
		663	my $registry = $obj->registry;
		664
		665	for (@$attach) {
		666	my ($klass, @attach) = @$_;
		667	_attach $registry, $klass, @attach;
		668	}
		669
		670	$obj->{$name} = \%arg;
		671	} else {
		672	warn "object uses attachment '$name' that is not available, postponing.\n";
		673	}
		674
		675	$obj->{_attachment}{$name} = undef;
		676	}
		677
		678	sub cf::attachable::attach {
		679	if (ref $_[0]) {
		680	_object_attach @_;
		681	} else {
		682	_attach shift->_attach_registry, @_;
		683	}
		684	};
		685
		686	# all those should be optimised
		687	sub cf::attachable::detach {
		688	my ($obj, $name) = @_;
		689
		690	if (ref $obj) {
		691	delete $obj->{_attachment}{$name};
		692	reattach ($obj);
		693	} else {
		694	Carp::croak "cannot, currently, detach class attachments";
		695	}
		696	};
		697
		698	sub cf::attachable::attached {
		699	my ($obj, $name) = @_;
		700
		701	exists $obj->{_attachment}{$name}
		702	}
		703
		704	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		705	eval "#line " . __LINE__ . " 'cf.pm'
		706	sub cf::\L$klass\E::_attach_registry {
		707	(\\\@CB_$klass, KLASS_$klass)
		708	}
		709
		710	sub cf::\L$klass\E::attachment {
		711	my \$name = shift;
		712
		713	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		714	}
		715	";
		716	die if $@;
		717	}
		718
		719	our $override;
		720	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		721
		722	sub override {
		723	$override = 1;
		724	@invoke_results = ();
		725	}
		726
		727	sub do_invoke {
		728	my $event = shift;
		729	my $callbacks = shift;
		730
		731	@invoke_results = ();
		732
		733	local $override;
		734
		735	for (@$callbacks) {
		736	eval { &{$_->[1]} };
		737
		738	if ($@) {
		739	warn "$@";
		740	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		741	override;
		742	}
		743
		744	return 1 if $override;
		745	}
		746
		747	0
		748	}
		749
		750	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		751
		752	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		753
		754	Generate an object-specific event with the given arguments.
		755
		756	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		757	removed in future versions), and there is no public API to access override
		758	results (if you must, access C<@cf::invoke_results> directly).
		759
444	=back	760	=back
445		761
446	=cut	762	=cut
447
448	*cf::object::valid =
449	*cf::player::valid =
450	*cf::map::valid = \&cf::_valid;
451		763
452	#############################################################################	764	#############################################################################
453	# object support	765	# object support
454		766
455	sub instantiate {
456	my ($obj, $data) = @_;
457
458	$data = from_json $data;
459
460	for (@$data) {
461	my ($name, $args) = @$_;
462
463	$obj->attach ($name, %{$args || {} });
464	}
465	}
466
467	# basically do the same as instantiate, without calling instantiate
468	sub reattach {	767	sub reattach {
		768	# basically do the same as instantiate, without calling instantiate
469	my ($obj) = @_;	769	my ($obj) = @_;
		770
470	my $registry = $obj->registry;	771	my $registry = $obj->registry;
471		772
472	@$registry = ();	773	@$registry = ();
473		774
474	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	775	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
475		776
476	for my $name (keys %{ $obj->{_attachment} || {} }) {	777	for my $name (keys %{ $obj->{_attachment} || {} }) {
477	if (my $attach = $attachment{$name}) {	778	if (my $attach = $attachment{$name}) {
478	for (@$attach) {	779	for (@$attach) {
479	my ($klass, @attach) = @$_;	780	my ($klass, @attach) = @$_;
480	_attach @$registry, $klass, @attach;	781	_attach $registry, $klass, @attach;
481	}	782	}
482	} else {	783	} else {
483	warn "object uses attachment '$name' that is not available, postponing.\n";	784	warn "object uses attachment '$name' that is not available, postponing.\n";
484	}	785	}
485	}	786	}
486	}	787	}
487		788
488	sub object_freezer_save {	789	cf::attachable->attach (
489	my ($filename, $rdata, $objs) = @_;
490
491	if (length $$rdata) {
492	warn sprintf "saving %s (%d,%d)\n",
493	$filename, length $$rdata, scalar @$objs;
494
495	if (open my $fh, ">:raw", "$filename~") {
496	chmod SAVE_MODE, $fh;
497	syswrite $fh, $$rdata;
498	close $fh;
499
500	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
501	chmod SAVE_MODE, $fh;
502	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
503	close $fh;
504	rename "$filename.pst~", "$filename.pst";
505	} else {
506	unlink "$filename.pst";
507	}
508
509	rename "$filename~", $filename;
510	} else {
511	warn "FATAL: $filename~: $!\n";
512	}
513	} else {
514	unlink $filename;
515	unlink "$filename.pst";
516	}
517	}
518
519	sub object_thawer_load {
520	my ($filename) = @_;
521
522	local $/;
523
524	my $av;
525
526	#TODO: use sysread etc.
527	if (open my $data, "<:raw:perlio", $filename) {
528	$data = <$data>;
529	if (open my $pst, "<:raw:perlio", "$filename.pst") {
530	$av = eval { (Storable::thaw <$pst>)->{objs} };
531	}
532	return ($data, $av);
533	}
534
535	()
536	}
537
538	attach_to_objects
539	prio => -1000000,	790	prio => -1000000,
		791	on_instantiate => sub {
		792	my ($obj, $data) = @_;
		793
		794	$data = from_json $data;
		795
		796	for (@$data) {
		797	my ($name, $args) = @$_;
		798
		799	$obj->attach ($name, %{$args || {} });
		800	}
		801	},
		802	on_reattach => \&reattach,
540	on_clone => sub {	803	on_clone => sub {
541	my ($src, $dst) = @_;	804	my ($src, $dst) = @_;
542		805
543	@{$dst->registry} = @{$src->registry};	806	@{$dst->registry} = @{$src->registry};
544		807
545	%$dst = %$src;	808	%$dst = %$src;
546		809
547	%{$dst->{_attachment}} = %{$src->{_attachment}}	810	%{$dst->{_attachment}} = %{$src->{_attachment}}
548	if exists $src->{_attachment};	811	if exists $src->{_attachment};
549	},	812	},
550	;	813	);
		814
		815	sub object_freezer_save {
		816	my ($filename, $rdata, $objs) = @_;
		817
		818	sync_job {
		819	if (length $$rdata) {
		820	warn sprintf "saving %s (%d,%d)\n",
		821	$filename, length $$rdata, scalar @$objs;
		822
		823	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		824	chmod SAVE_MODE, $fh;
		825	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		826	aio_fsync $fh;
		827	close $fh;
		828
		829	if (@$objs) {
		830	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		831	chmod SAVE_MODE, $fh;
		832	my $data = Storable::nfreeze { version => 1, objs => $objs };
		833	aio_write $fh, 0, (length $data), $data, 0;
		834	aio_fsync $fh;
		835	close $fh;
		836	aio_rename "$filename.pst~", "$filename.pst";
		837	}
		838	} else {
		839	aio_unlink "$filename.pst";
		840	}
		841
		842	aio_rename "$filename~", $filename;
		843	} else {
		844	warn "FATAL: $filename~: $!\n";
		845	}
		846	} else {
		847	aio_unlink $filename;
		848	aio_unlink "$filename.pst";
		849	}
		850	}
		851	}
		852
		853	sub object_freezer_as_string {
		854	my ($rdata, $objs) = @_;
		855
		856	use Data::Dumper;
		857
		858	$$rdata . Dumper $objs
		859	}
		860
		861	sub object_thawer_load {
		862	my ($filename) = @_;
		863
		864	my ($data, $av);
		865
		866	(aio_load $filename, $data) >= 0
		867	or return;
		868
		869	unless (aio_stat "$filename.pst") {
		870	(aio_load "$filename.pst", $av) >= 0
		871	or return;
		872	$av = eval { (Storable::thaw $av)->{objs} };
		873	}
		874
		875	warn sprintf "loading %s (%d)\n",
		876	$filename, length $data, scalar @{$av || []};#d#
		877	return ($data, $av);
		878	}
551		879
552	#############################################################################	880	#############################################################################
553	# old plug-in events	881	# command handling &c
554		882
555	sub inject_event {	883	=item cf::register_command $name => \&callback($ob,$args);
556	my $extension = shift;
557	my $event_code = shift;
558		884
559	my $cb = $hook[$event_code]{$extension}	885	Register a callback for execution when the client sends the user command
560	or return;	886	$name.
561		887
562	&$cb	888	=cut
563	}
564
565	sub inject_global_event {
566	my $event = shift;
567
568	my $cb = $hook[$event]
569	or return;
570
571	List::Util::max map &$_, values %$cb
572	}
573
574	sub inject_command {
575	my ($name, $obj, $params) = @_;
576
577	for my $cmd (@{ $command{$name} }) {
578	$cmd->[1]->($obj, $params);
579	}
580
581	-1
582	}
583		889
584	sub register_command {	890	sub register_command {
585	my ($name, $time, $cb) = @_;	891	my ($name, $cb) = @_;
586		892
587	my $caller = caller;	893	my $caller = caller;
588	#warn "registering command '$name/$time' to '$caller'";	894	#warn "registering command '$name/$time' to '$caller'";
589		895
590	push @{ $command{$name} }, [$time, $cb, $caller];	896	push @{ $COMMAND{$name} }, [$caller, $cb];
591	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
592	}	897	}
		898
		899	=item cf::register_extcmd $name => \&callback($pl,$packet);
		900
		901	Register a callbackf ro execution when the client sends an extcmd packet.
		902
		903	If the callback returns something, it is sent back as if reply was being
		904	called.
		905
		906	=cut
593		907
594	sub register_extcmd {	908	sub register_extcmd {
595	my ($name, $cb) = @_;	909	my ($name, $cb) = @_;
596		910
597	my $caller = caller;	911	my $caller = caller;
598	#warn "registering extcmd '$name' to '$caller'";	912	#warn "registering extcmd '$name' to '$caller'";
599		913
600	$extcmd{$name} = [$cb, $caller];	914	$EXTCMD{$name} = [$cb, $caller];
601	}	915	}
		916
		917	cf::player->attach (
		918	on_command => sub {
		919	my ($pl, $name, $params) = @_;
		920
		921	my $cb = $COMMAND{$name}
		922	or return;
		923
		924	for my $cmd (@$cb) {
		925	$cmd->[1]->($pl->ob, $params);
		926	}
		927
		928	cf::override;
		929	},
		930	on_extcmd => sub {
		931	my ($pl, $buf) = @_;
		932
		933	my $msg = eval { from_json $buf };
		934
		935	if (ref $msg) {
		936	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		937	if (my %reply = $cb->[0]->($pl, $msg)) {
		938	$pl->ext_reply ($msg->{msgid}, %reply);
		939	}
		940	}
		941	} else {
		942	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		943	}
		944
		945	cf::override;
		946	},
		947	);
602		948
603	sub register {	949	sub register {
604	my ($base, $pkg) = @_;	950	my ($base, $pkg) = @_;
605		951
606	#TODO	952	#TODO
…		…
625	. "#line 1 \"$path\"\n{\n"	971	. "#line 1 \"$path\"\n{\n"
626	. (do { local $/; <$fh> })	972	. (do { local $/; <$fh> })
627	. "\n};\n1";	973	. "\n};\n1";
628		974
629	eval $source	975	eval $source
630	or die "$path: $@";	976	or die $@ ? "$path: $@\n"
		977	: "extension disabled.\n";
631		978
632	push @exts, $pkg;	979	push @exts, $pkg;
633	$ext_pkg{$base} = $pkg;	980	$ext_pkg{$base} = $pkg;
634		981
635	# no strict 'refs';	982	# no strict 'refs';
…		…
648	# for my $idx (0 .. $#PLUGIN_EVENT) {	995	# for my $idx (0 .. $#PLUGIN_EVENT) {
649	# delete $hook[$idx]{$pkg};	996	# delete $hook[$idx]{$pkg};
650	# }	997	# }
651		998
652	# remove commands	999	# remove commands
653	for my $name (keys %command) {	1000	for my $name (keys %COMMAND) {
654	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1001	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
655		1002
656	if (@cb) {	1003	if (@cb) {
657	$command{$name} = \@cb;	1004	$COMMAND{$name} = \@cb;
658	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
659	} else {	1005	} else {
660	delete $command{$name};
661	delete $COMMAND{"$name\000"};	1006	delete $COMMAND{$name};
662	}	1007	}
663	}	1008	}
664		1009
665	# remove extcmds	1010	# remove extcmds
666	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1011	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
667	delete $extcmd{$name};	1012	delete $EXTCMD{$name};
668	}	1013	}
669		1014
670	if (my $cb = $pkg->can ("unload")) {	1015	if (my $cb = $pkg->can ("unload")) {
671	eval {	1016	eval {
672	$cb->($pkg);	1017	$cb->($pkg);
…		…
676		1021
677	Symbol::delete_package $pkg;	1022	Symbol::delete_package $pkg;
678	}	1023	}
679		1024
680	sub load_extensions {	1025	sub load_extensions {
681	my $LIBDIR = maps_directory "perl";
682
683	for my $ext (<$LIBDIR/*.ext>) {	1026	for my $ext (<$LIBDIR/*.ext>) {
684	next unless -r $ext;	1027	next unless -r $ext;
685	eval {	1028	eval {
686	load_extension $ext;	1029	load_extension $ext;
687	1	1030	1
688	} or warn "$ext not loaded: $@";	1031	} or warn "$ext not loaded: $@";
689	}	1032	}
690	}	1033	}
691		1034
692	#############################################################################	1035	#############################################################################
693	# extcmd framework, basically convert ext <msg>
694	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
695
696	attach_to_players
697	on_extcmd => sub {
698	my ($pl, $buf) = @_;
699
700	my $msg = eval { from_json $buf };
701
702	if (ref $msg) {
703	if (my $cb = $extcmd{$msg->{msgtype}}) {
704	if (my %reply = $cb->[0]->($pl, $msg)) {
705	$pl->ext_reply ($msg->{msgid}, %reply);
706	}
707	}
708	} else {
709	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
710	}
711
712	cf::override;
713	},
714	;
715
716	#############################################################################
717	# load/save/clean perl data associated with a map	1036	# load/save/clean perl data associated with a map
718		1037
719	*cf::mapsupport::on_clean = sub {	1038	*cf::mapsupport::on_clean = sub {
720	my ($map) = @_;	1039	my ($map) = @_;
721		1040
…		…
723	defined $path or return;	1042	defined $path or return;
724		1043
725	unlink "$path.pst";	1044	unlink "$path.pst";
726	};	1045	};
727		1046
728	attach_to_maps prio => -10000, package => cf::mapsupport::;	1047	cf::map->attach (prio => -10000, package => cf::mapsupport::);
729		1048
730	#############################################################################	1049	#############################################################################
731	# load/save perl data associated with player->ob objects	1050	# load/save perl data associated with player->ob objects
732		1051
733	sub all_objects(@) {	1052	sub all_objects(@) {
734	@_, map all_objects ($_->inv), @_	1053	@_, map all_objects ($_->inv), @_
735	}	1054	}
736		1055
737	# TODO: compatibility cruft, remove when no longer needed	1056	# TODO: compatibility cruft, remove when no longer needed
738	attach_to_players	1057	cf::player->attach (
739	on_load => sub {	1058	on_load => sub {
740	my ($pl, $path) = @_;	1059	my ($pl, $path) = @_;
741		1060
742	for my $o (all_objects $pl->ob) {	1061	for my $o (all_objects $pl->ob) {
743	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1062	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
745		1064
746	%$o = %{ Storable::thaw pack "H*", $value };	1065	%$o = %{ Storable::thaw pack "H*", $value };
747	}	1066	}
748	}	1067	}
749	},	1068	},
750	;	1069	);
751		1070
752	#############################################################################	1071	#############################################################################
753		1072
754	=head2 CORE EXTENSIONS	1073	=head2 CORE EXTENSIONS
755		1074
756	Functions and methods that extend core crossfire objects.	1075	Functions and methods that extend core crossfire objects.
757		1076
		1077	=cut
		1078
		1079	package cf::player;
		1080
		1081	=head3 cf::player
		1082
758	=over 4	1083	=over 4
759		1084
760	=item cf::player::exists $login	1085	=item cf::player::find $login
761		1086
762	Returns true when the given account exists.	1087	Returns the given player object, loading it if necessary (might block).
763		1088
764	=cut	1089	=cut
765		1090
766	sub cf::player::exists($) {	1091	sub path($) {
767	cf::player::find $_[0]	1092	sprintf "%s/%s/%s/%s.pl",
768	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1093	cf::localdir, cf::playerdir,
		1094	(ref $_[0] ? $_[0]->ob->name : $_[0]) x 2
769	}	1095	}
770		1096
		1097	sub find_active($) {
		1098	$cf::PLAYER{$_[0]}
		1099	and $cf::PLAYER{$_[0]}->active
		1100	and $cf::PLAYER{$_[0]}
		1101	}
		1102
		1103	sub exists($) {
		1104	my ($login) = @_;
		1105
		1106	$cf::PLAYER{$login}
		1107	or cf::sync_job { !aio_stat $login }
		1108	}
		1109
		1110	sub find($) {
		1111	return $cf::PLAYER{$_[0]} || do {
		1112	my $login = $_[0];
		1113
		1114	my $guard = cf::lock_acquire "user_find:$login";
		1115
		1116	$cf::PLAYER{$login} ||= (load_pl path $login or return);
		1117	};
		1118	}
		1119
		1120	sub save($) {
		1121	my ($pl) = @_;
		1122
		1123	return if $pl->{deny_save};
		1124
		1125	my $path = path $pl;
		1126	my $guard = cf::lock_acquire "user_save:$path";
		1127
		1128	return if $pl->{deny_save};
		1129	$pl->{last_save} = $cf::RUNTIME;
		1130
		1131	Coro::cede;
		1132	$pl->save_pl ($path);
		1133	Coro::cede;
		1134	}
		1135
		1136	sub new($) {
		1137	my ($login) = @_;
		1138
		1139	my $self = create;
		1140
		1141	$self->ob->name ($login);
		1142	$self->{deny_save} = 1;
		1143
		1144	$cf::PLAYER{$login} = $self;
		1145
		1146	$self
		1147	}
		1148
		1149	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1150
		1151	Sends an ext reply to the player.
		1152
		1153	=cut
		1154
		1155	sub ext_reply($$$%) {
		1156	my ($self, $id, %msg) = @_;
		1157
		1158	$msg{msgid} = $id;
		1159
		1160	$self->send ("ext " . cf::to_json \%msg);
		1161	}
		1162
		1163	package cf;
		1164
		1165	=back
		1166
		1167
		1168	=head3 cf::map
		1169
		1170	=over 4
		1171
		1172	=cut
		1173
		1174	package cf::map;
		1175
		1176	use Fcntl;
		1177	use Coro::AIO;
		1178
		1179	our $MAX_RESET = 3600;
		1180	our $DEFAULT_RESET = 3000;
		1181
		1182	sub generate_random_map {
		1183	my ($path, $rmp) = @_;
		1184
		1185	# mit "rum" bekleckern, nicht
		1186	cf::map::_create_random_map
		1187	$path,
		1188	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1189	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1190	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1191	$rmp->{exit_on_final_map},
		1192	$rmp->{xsize}, $rmp->{ysize},
		1193	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1194	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1195	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1196	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1197	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1198	(cf::region::find $rmp->{region})
		1199	}
		1200
		1201	# and all this just because we cannot iterate over
		1202	# all maps in C++...
		1203	sub change_all_map_light {
		1204	my ($change) = @_;
		1205
		1206	$_->change_map_light ($change)
		1207	for grep $_->outdoor, values %cf::MAP;
		1208	}
		1209
		1210	sub try_load_header($) {
		1211	my ($path) = @_;
		1212
		1213	utf8::encode $path;
		1214	aio_open $path, O_RDONLY, 0
		1215	or return;
		1216
		1217	my $map = cf::map::new
		1218	or return;
		1219
		1220	# for better error messages only, will be overwritten
		1221	$map->path ($path);
		1222
		1223	$map->load_header ($path)
		1224	or return;
		1225
		1226	$map->{load_path} = $path;
		1227
		1228	$map
		1229	}
		1230
		1231	sub find;
		1232	sub find {
		1233	my ($path, $origin) = @_;
		1234
		1235	#warn "find<$path,$origin>\n";#d#
		1236
		1237	$path = new cf::path $path, $origin && $origin->path;
		1238	my $key = $path->as_string;
		1239
		1240	cf::lock_wait "map_find:$key";
		1241
		1242	$cf::MAP{$key} || do {
		1243	my $guard = cf::lock_acquire "map_find:$key";
		1244
		1245	# do it the slow way
		1246	my $map = try_load_header $path->save_path;
		1247
		1248	Coro::cede;
		1249
		1250	if ($map) {
		1251	$map->last_access ((delete $map->{last_access})
		1252	|| $cf::RUNTIME); #d#
		1253	# safety
		1254	$map->{instantiate_time} = $cf::RUNTIME
		1255	if $map->{instantiate_time} > $cf::RUNTIME;
		1256	} else {
		1257	if (my $rmp = $path->random_map_params) {
		1258	$map = generate_random_map $key, $rmp;
		1259	} else {
		1260	$map = try_load_header $path->load_path;
		1261	}
		1262
		1263	$map or return;
		1264
		1265	$map->{load_original} = 1;
		1266	$map->{instantiate_time} = $cf::RUNTIME;
		1267	$map->last_access ($cf::RUNTIME);
		1268	$map->instantiate;
		1269
		1270	# per-player maps become, after loading, normal maps
		1271	$map->per_player (0) if $path->{user_rel};
		1272	}
		1273
		1274	$map->path ($key);
		1275	$map->{path} = $path;
		1276	$map->{last_save} = $cf::RUNTIME;
		1277
		1278	Coro::cede;
		1279
		1280	if ($map->should_reset) {
		1281	$map->reset;
		1282	undef $guard;
		1283	$map = find $path
		1284	or return;
		1285	}
		1286
		1287	$cf::MAP{$key} = $map
		1288	}
		1289	}
		1290
		1291	sub load {
		1292	my ($self) = @_;
		1293
		1294	my $path = $self->{path};
		1295	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1296
		1297	return if $self->in_memory != cf::MAP_SWAPPED;
		1298
		1299	$self->in_memory (cf::MAP_LOADING);
		1300
		1301	$self->alloc;
		1302	$self->load_objects ($self->{load_path}, 1)
		1303	or return;
		1304
		1305	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1306	if delete $self->{load_original};
		1307
		1308	if (my $uniq = $path->uniq_path) {
		1309	utf8::encode $uniq;
		1310	if (aio_open $uniq, O_RDONLY, 0) {
		1311	$self->clear_unique_items;
		1312	$self->load_objects ($uniq, 0);
		1313	}
		1314	}
		1315
		1316	Coro::cede;
		1317
		1318	# now do the right thing for maps
		1319	$self->link_multipart_objects;
		1320
		1321	if ($self->{path}->is_style_map) {
		1322	$self->{deny_save} = 1;
		1323	$self->{deny_reset} = 1;
		1324	} else {
		1325	$self->fix_auto_apply;
		1326	$self->decay_objects;
		1327	$self->update_buttons;
		1328	$self->set_darkness_map;
		1329	$self->difficulty ($self->estimate_difficulty)
		1330	unless $self->difficulty;
		1331	$self->activate;
		1332	}
		1333
		1334	Coro::cede;
		1335
		1336	$self->in_memory (cf::MAP_IN_MEMORY);
		1337	}
		1338
		1339	sub find_sync {
		1340	my ($path, $origin) = @_;
		1341
		1342	cf::sync_job { cf::map::find $path, $origin }
		1343	}
		1344
		1345	sub do_load_sync {
		1346	my ($map) = @_;
		1347
		1348	cf::sync_job { $map->load };
		1349	}
		1350
		1351	sub save {
		1352	my ($self) = @_;
		1353
		1354	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1355
		1356	$self->{last_save} = $cf::RUNTIME;
		1357
		1358	return unless $self->dirty;
		1359
		1360	my $save = $self->{path}->save_path; utf8::encode $save;
		1361	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1362
		1363	$self->{load_path} = $save;
		1364
		1365	return if $self->{deny_save};
		1366
		1367	local $self->{last_access} = $self->last_access;#d#
		1368
		1369	cf::async {
		1370	$_->contr->save for $self->players;
		1371	};
		1372
		1373	if ($uniq) {
		1374	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1375	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1376	} else {
		1377	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1378	}
		1379	}
		1380
		1381	sub swap_out {
		1382	my ($self) = @_;
		1383
		1384	# save first because save cedes
		1385	$self->save;
		1386
		1387	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1388
		1389	return if $self->players;
		1390	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1391	return if $self->{deny_save};
		1392
		1393	$self->clear;
		1394	$self->in_memory (cf::MAP_SWAPPED);
		1395	}
		1396
		1397	sub reset_at {
		1398	my ($self) = @_;
		1399
		1400	# TODO: safety, remove and allow resettable per-player maps
		1401	return 1e99 if $self->{path}{user_rel};
		1402	return 1e99 if $self->{deny_reset};
		1403
		1404	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1405	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1406
		1407	$time + $to
		1408	}
		1409
		1410	sub should_reset {
		1411	my ($self) = @_;
		1412
		1413	$self->reset_at <= $cf::RUNTIME
		1414	}
		1415
		1416	sub unlink_save {
		1417	my ($self) = @_;
		1418
		1419	utf8::encode (my $save = $self->{path}->save_path);
		1420	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1421	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1422	}
		1423
		1424	sub rename {
		1425	my ($self, $new_path) = @_;
		1426
		1427	$self->unlink_save;
		1428
		1429	delete $cf::MAP{$self->path};
		1430	$self->{path} = new cf::path $new_path;
		1431	$self->path ($self->{path}->as_string);
		1432	$cf::MAP{$self->path} = $self;
		1433
		1434	$self->save;
		1435	}
		1436
		1437	sub reset {
		1438	my ($self) = @_;
		1439
		1440	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1441
		1442	return if $self->players;
		1443	return if $self->{path}{user_rel};#d#
		1444
		1445	warn "resetting map ", $self->path;#d#
		1446
		1447	delete $cf::MAP{$self->path};
		1448
		1449	$_->clear_links_to ($self) for values %cf::MAP;
		1450
		1451	$self->unlink_save;
		1452	$self->destroy;
		1453	}
		1454
		1455	my $nuke_counter = "aaaa";
		1456
		1457	sub nuke {
		1458	my ($self) = @_;
		1459
		1460	$self->{deny_save} = 1;
		1461	$self->reset_timeout (1);
		1462	$self->rename ("{nuke}/" . ($nuke_counter++));
		1463	$self->reset; # polite request, might not happen
		1464	}
		1465
		1466	sub customise_for {
		1467	my ($map, $ob) = @_;
		1468
		1469	if ($map->per_player) {
		1470	return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
		1471	}
		1472
		1473	$map
		1474	}
		1475
		1476	sub emergency_save {
		1477	my $freeze_guard = cf::freeze_mainloop;
		1478
		1479	warn "enter emergency perl save\n";
		1480
		1481	cf::sync_job {
		1482	warn "begin emergency player save\n";
		1483	$_->save for values %cf::PLAYER;
		1484	warn "end emergency player save\n";
		1485
		1486	warn "begin emergency map save\n";
		1487	$_->save for values %cf::MAP;
		1488	warn "end emergency map save\n";
		1489	};
		1490
		1491	warn "leave emergency perl save\n";
		1492	}
		1493
		1494	package cf;
		1495
		1496	=back
		1497
		1498
		1499	=head3 cf::object::player
		1500
		1501	=over 4
		1502
771	=item $player->reply ($npc, $msg[, $flags])	1503	=item $player_object->reply ($npc, $msg[, $flags])
772		1504
773	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1505	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
774	can be C<undef>. Does the right thing when the player is currently in a	1506	can be C<undef>. Does the right thing when the player is currently in a
775	dialogue with the given NPC character.	1507	dialogue with the given NPC character.
776		1508
777	=cut	1509	=cut
778		1510
779	# rough implementation of a future "reply" method that works	1511	# rough implementation of a future "reply" method that works
780	# with dialog boxes.	1512	# with dialog boxes.
		1513	#TODO: the first argument must go, split into a $npc->reply_to ( method
781	sub cf::object::player::reply($$$;$) {	1514	sub cf::object::player::reply($$$;$) {
782	my ($self, $npc, $msg, $flags) = @_;	1515	my ($self, $npc, $msg, $flags) = @_;
783		1516
784	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1517	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
785		1518
…		…
789	$msg = $npc->name . " says: $msg" if $npc;	1522	$msg = $npc->name . " says: $msg" if $npc;
790	$self->message ($msg, $flags);	1523	$self->message ($msg, $flags);
791	}	1524	}
792	}	1525	}
793		1526
794	=item $player->ext_reply ($msgid, $msgtype, %msg)	1527	=item $player_object->may ("access")
795		1528
796	Sends an ext reply to the player.	1529	Returns wether the given player is authorized to access resource "access"
		1530	(e.g. "command_wizcast").
797		1531
798	=cut	1532	=cut
799		1533
800	sub cf::player::ext_reply($$$%) {	1534	sub cf::object::player::may {
		1535	my ($self, $access) = @_;
		1536
		1537	$self->flag (cf::FLAG_WIZ) ||
		1538	(ref $cf::CFG{"may_$access"}
		1539	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1540	: $cf::CFG{"may_$access"})
		1541	}
		1542
		1543	=item $player_object->enter_link
		1544
		1545	Freezes the player and moves him/her to a special map (C<{link}>).
		1546
		1547	The player should be reaosnably safe there for short amounts of time. You
		1548	I<MUST> call C<leave_link> as soon as possible, though.
		1549
		1550	=item $player_object->leave_link ($map, $x, $y)
		1551
		1552	Moves the player out of the specila link map onto the given map. If the
		1553	map is not valid (or omitted), the player will be moved back to the
		1554	location he/she was before the call to C<enter_link>, or, if that fails,
		1555	to the emergency map position.
		1556
		1557	Might block.
		1558
		1559	=cut
		1560
		1561	sub cf::object::player::enter_link {
		1562	my ($self) = @_;
		1563
		1564	$self->deactivate_recursive;
		1565
		1566	return if $self->map == $LINK_MAP;
		1567
		1568	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1569	if $self->map;
		1570
		1571	$self->enter_map ($LINK_MAP, 20, 20);
		1572	}
		1573
		1574	sub cf::object::player::leave_link {
		1575	my ($self, $map, $x, $y) = @_;
		1576
		1577	my $link_pos = delete $self->{_link_pos};
		1578
		1579	unless ($map) {
		1580	# restore original map position
		1581	($map, $x, $y) = @{ $link_pos || [] };
		1582	$map = cf::map::find $map;
		1583
		1584	unless ($map) {
		1585	($map, $x, $y) = @$EMERGENCY_POSITION;
		1586	$map = cf::map::find $map
		1587	or die "FATAL: cannot load emergency map\n";
		1588	}
		1589	}
		1590
		1591	($x, $y) = (-1, -1)
		1592	unless (defined $x) && (defined $y);
		1593
		1594	# use -1 or undef as default coordinates, not 0, 0
		1595	($x, $y) = ($map->enter_x, $map->enter_y)
		1596	if $x <=0 && $y <= 0;
		1597
		1598	$map->load;
		1599
		1600	return unless $self->contr->active;
		1601	$self->activate_recursive;
		1602	$self->enter_map ($map, $x, $y);
		1603	}
		1604
		1605	cf::player->attach (
		1606	on_logout => sub {
		1607	my ($pl) = @_;
		1608
		1609	# abort map switching before logout
		1610	if ($pl->ob->{_link_pos}) {
		1611	cf::sync_job {
		1612	$pl->ob->leave_link
		1613	};
		1614	}
		1615	},
		1616	on_login => sub {
		1617	my ($pl) = @_;
		1618
		1619	# try to abort aborted map switching on player login :)
		1620	# should happen only on crashes
		1621	if ($pl->ob->{_link_pos}) {
		1622	$pl->ob->enter_link;
		1623	(async {
		1624	# we need this sleep as the login has a concurrent enter_exit running
		1625	# and this sleep increases chances of the player not ending up in scorn
		1626	$pl->ob->reply (undef,
		1627	"There was an internal problem at your last logout, "
		1628	. "the server will try to bring you to your intended destination in a second.",
		1629	cf::NDI_RED);
		1630	Coro::Timer::sleep 1;
		1631	$pl->ob->leave_link;
		1632	})->prio (2);
		1633	}
		1634	},
		1635	);
		1636
		1637	=item $player_object->goto ($path, $x, $y)
		1638
		1639	=cut
		1640
		1641	sub cf::object::player::goto {
		1642	my ($self, $path, $x, $y) = @_;
		1643
		1644	$self->enter_link;
		1645
		1646	(async {
		1647	$path = new cf::path $path;
		1648
		1649	my $map = cf::map::find $path->as_string;
		1650	$map = $map->customise_for ($self) if $map;
		1651
		1652	# warn "entering ", $map->path, " at ($x, $y)\n"
		1653	# if $map;
		1654
		1655	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1656
		1657	$self->leave_link ($map, $x, $y);
		1658	})->prio (1);
		1659	}
		1660
		1661	=item $player_object->enter_exit ($exit_object)
		1662
		1663	=cut
		1664
		1665	sub parse_random_map_params {
		1666	my ($spec) = @_;
		1667
		1668	my $rmp = { # defaults
		1669	xsize => 10,
		1670	ysize => 10,
		1671	};
		1672
		1673	for (split /\n/, $spec) {
		1674	my ($k, $v) = split /\s+/, $_, 2;
		1675
		1676	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1677	}
		1678
		1679	$rmp
		1680	}
		1681
		1682	sub prepare_random_map {
		1683	my ($exit) = @_;
		1684
		1685	# all this does is basically replace the /! path by
		1686	# a new random map path (?random/...) with a seed
		1687	# that depends on the exit object
		1688
		1689	my $rmp = parse_random_map_params $exit->msg;
		1690
		1691	if ($exit->map) {
		1692	$rmp->{region} = $exit->map->region_name;
		1693	$rmp->{origin_map} = $exit->map->path;
		1694	$rmp->{origin_x} = $exit->x;
		1695	$rmp->{origin_y} = $exit->y;
		1696	}
		1697
		1698	$rmp->{random_seed} ||= $exit->random_seed;
		1699
		1700	my $data = cf::to_json $rmp;
		1701	my $md5 = Digest::MD5::md5_hex $data;
		1702
		1703	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1704	aio_write $fh, 0, (length $data), $data, 0;
		1705
		1706	$exit->slaying ("?random/$md5");
		1707	$exit->msg (undef);
		1708	}
		1709	}
		1710
		1711	sub cf::object::player::enter_exit {
801	my ($self, $id, %msg) = @_;	1712	my ($self, $exit) = @_;
802		1713
803	$msg{msgid} = $id;	1714	return unless $self->type == cf::PLAYER;
804		1715
805	$self->send ("ext " . to_json \%msg);	1716	$self->enter_link;
		1717
		1718	(async {
		1719	$self->deactivate_recursive; # just to be sure
		1720	unless (eval {
		1721	prepare_random_map $exit
		1722	if $exit->slaying eq "/!";
		1723
		1724	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1725	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1726
		1727	1;
		1728	}) {
		1729	$self->message ("Something went wrong deep within the crossfire server. "
		1730	. "I'll try to bring you back to the map you were before. "
		1731	. "Please report this to the dungeon master",
		1732	cf::NDI_UNIQUE | cf::NDI_RED);
		1733
		1734	warn "ERROR in enter_exit: $@";
		1735	$self->leave_link;
		1736	}
		1737	})->prio (1);
806	}	1738	}
		1739
		1740	=head3 cf::client
		1741
		1742	=over 4
		1743
		1744	=item $client->send_drawinfo ($text, $flags)
		1745
		1746	Sends a drawinfo packet to the client. Circumvents output buffering so
		1747	should not be used under normal circumstances.
		1748
		1749	=cut
		1750
		1751	sub cf::client::send_drawinfo {
		1752	my ($self, $text, $flags) = @_;
		1753
		1754	utf8::encode $text;
		1755	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1756	}
		1757
		1758
		1759	=item $success = $client->query ($flags, "text", \&cb)
		1760
		1761	Queues a query to the client, calling the given callback with
		1762	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1763	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1764
		1765	Queries can fail, so check the return code. Or don't, as queries will become
		1766	reliable at some point in the future.
		1767
		1768	=cut
		1769
		1770	sub cf::client::query {
		1771	my ($self, $flags, $text, $cb) = @_;
		1772
		1773	return unless $self->state == ST_PLAYING
		1774	|| $self->state == ST_SETUP
		1775	|| $self->state == ST_CUSTOM;
		1776
		1777	$self->state (ST_CUSTOM);
		1778
		1779	utf8::encode $text;
		1780	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1781
		1782	$self->send_packet ($self->{query_queue}[0][0])
		1783	if @{ $self->{query_queue} } == 1;
		1784	}
		1785
		1786	cf::client->attach (
		1787	on_reply => sub {
		1788	my ($ns, $msg) = @_;
		1789
		1790	# this weird shuffling is so that direct followup queries
		1791	# get handled first
		1792	my $queue = delete $ns->{query_queue}
		1793	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1794
		1795	(shift @$queue)->[1]->($msg);
		1796
		1797	push @{ $ns->{query_queue} }, @$queue;
		1798
		1799	if (@{ $ns->{query_queue} } == @$queue) {
		1800	if (@$queue) {
		1801	$ns->send_packet ($ns->{query_queue}[0][0]);
		1802	} else {
		1803	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1804	}
		1805	}
		1806	},
		1807	);
		1808
		1809	=item $client->async (\&cb)
		1810
		1811	Create a new coroutine, running the specified callback. The coroutine will
		1812	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1813	or loss of connection).
		1814
		1815	=cut
		1816
		1817	sub cf::client::async {
		1818	my ($self, $cb) = @_;
		1819
		1820	my $coro = &Coro::async ($cb);
		1821
		1822	$coro->on_destroy (sub {
		1823	delete $self->{_coro}{$coro+0};
		1824	});
		1825
		1826	$self->{_coro}{$coro+0} = $coro;
		1827
		1828	$coro
		1829	}
		1830
		1831	cf::client->attach (
		1832	on_destroy => sub {
		1833	my ($ns) = @_;
		1834
		1835	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1836	},
		1837	);
807		1838
808	=back	1839	=back
809		1840
810	=cut
811
812	#############################################################################
813		1841
814	=head2 SAFE SCRIPTING	1842	=head2 SAFE SCRIPTING
815		1843
816	Functions that provide a safe environment to compile and execute	1844	Functions that provide a safe environment to compile and execute
817	snippets of perl code without them endangering the safety of the server	1845	snippets of perl code without them endangering the safety of the server
818	itself. Looping constructs, I/O operators and other built-in functionality	1846	itself. Looping constructs, I/O operators and other built-in functionality
819	is not available in the safe scripting environment, and the number of	1847	is not available in the safe scripting environment, and the number of
820	functions and methods that cna be called is greatly reduced.	1848	functions and methods that can be called is greatly reduced.
821		1849
822	=cut	1850	=cut
823		1851
824	our $safe = new Safe "safe";	1852	our $safe = new Safe "safe";
825	our $safe_hole = new Safe::Hole;	1853	our $safe_hole = new Safe::Hole;
…		…
832		1860
833	=pod	1861	=pod
834		1862
835	The following fucntions and emthods are available within a safe environment:	1863	The following fucntions and emthods are available within a safe environment:
836		1864
837	cf::object contr pay_amount pay_player	1865	cf::object contr pay_amount pay_player map
838	cf::object::player player	1866	cf::object::player player
839	cf::player peaceful	1867	cf::player peaceful
		1868	cf::map trigger
840		1869
841	=cut	1870	=cut
842		1871
843	for (	1872	for (
844	["cf::object" => qw(contr pay_amount pay_player)],	1873	["cf::object" => qw(contr pay_amount pay_player map)],
845	["cf::object::player" => qw(player)],	1874	["cf::object::player" => qw(player)],
846	["cf::player" => qw(peaceful)],	1875	["cf::player" => qw(peaceful)],
		1876	["cf::map" => qw(trigger)],
847	) {	1877	) {
848	no strict 'refs';	1878	no strict 'refs';
849	my ($pkg, @funs) = @$_;	1879	my ($pkg, @funs) = @$_;
850	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1880	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
851	for @funs;	1881	for @funs;
…		…
961		1991
962	Immediately write the database to disk I<if it is dirty>.	1992	Immediately write the database to disk I<if it is dirty>.
963		1993
964	=cut	1994	=cut
965		1995
		1996	our $DB;
		1997
966	{	1998	{
967	my $db;
968	my $path = cf::localdir . "/database.pst";	1999	my $path = cf::localdir . "/database.pst";
969		2000
970	sub db_load() {	2001	sub db_load() {
971	warn "loading database $path\n";#d# remove later
972	$db = stat $path ? Storable::retrieve $path : { };	2002	$DB = stat $path ? Storable::retrieve $path : { };
973	}	2003	}
974		2004
975	my $pid;	2005	my $pid;
976		2006
977	sub db_save() {	2007	sub db_save() {
978	warn "saving database $path\n";#d# remove later
979	waitpid $pid, 0 if $pid;	2008	waitpid $pid, 0 if $pid;
980	if (0 == ($pid = fork)) {	2009	if (0 == ($pid = fork)) {
981	$db->{_meta}{version} = 1;	2010	$DB->{_meta}{version} = 1;
982	Storable::nstore $db, "$path~";	2011	Storable::nstore $DB, "$path~";
983	rename "$path~", $path;	2012	rename "$path~", $path;
984	cf::_exit 0 if defined $pid;	2013	cf::_exit 0 if defined $pid;
985	}	2014	}
986	}	2015	}
987		2016
…		…
990	sub db_sync() {	2019	sub db_sync() {
991	db_save if $dirty;	2020	db_save if $dirty;
992	undef $dirty;	2021	undef $dirty;
993	}	2022	}
994		2023
995	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2024	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
996	db_sync;	2025	db_sync;
997	});	2026	});
998		2027
999	sub db_dirty() {	2028	sub db_dirty() {
1000	$dirty = 1;	2029	$dirty = 1;
1001	$idle->start;	2030	$idle->start;
1002	}	2031	}
1003		2032
1004	sub db_get($;$) {	2033	sub db_get($;$) {
1005	@_ >= 2	2034	@_ >= 2
1006	? $db->{$_[0]}{$_[1]}	2035	? $DB->{$_[0]}{$_[1]}
1007	: ($db->{$_[0]} ||= { })	2036	: ($DB->{$_[0]} ||= { })
1008	}	2037	}
1009		2038
1010	sub db_put($$;$) {	2039	sub db_put($$;$) {
1011	if (@_ >= 3) {	2040	if (@_ >= 3) {
1012	$db->{$_[0]}{$_[1]} = $_[2];	2041	$DB->{$_[0]}{$_[1]} = $_[2];
1013	} else {	2042	} else {
1014	$db->{$_[0]} = $_[1];	2043	$DB->{$_[0]} = $_[1];
1015	}	2044	}
1016	db_dirty;	2045	db_dirty;
1017	}	2046	}
1018		2047
1019	attach_global	2048	cf::global->attach (
1020	prio => 10000,	2049	prio => 10000,
1021	on_cleanup => sub {	2050	on_cleanup => sub {
1022	db_sync;	2051	db_sync;
1023	},	2052	},
1024	;	2053	);
1025	}	2054	}
1026		2055
1027	#############################################################################	2056	#############################################################################
1028	# the server's main()	2057	# the server's main()
1029		2058
		2059	sub cfg_load {
		2060	open my $fh, "<:utf8", cf::confdir . "/config"
		2061	or return;
		2062
		2063	local $/;
		2064	*CFG = YAML::Syck::Load <$fh>;
		2065
		2066	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2067
		2068	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2069	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2070
		2071	if (exists $CFG{mlockall}) {
		2072	eval {
		2073	$CFG{mlockall} ? &mlockall : &munlockall
		2074	and die "WARNING: m(un)lockall failed: $!\n";
		2075	};
		2076	warn $@ if $@;
		2077	}
		2078	}
		2079
1030	sub main {	2080	sub main {
		2081	# we must not ever block the main coroutine
		2082	local $Coro::idle = sub {
		2083	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2084	async { Event::one_event };
		2085	};
		2086
		2087	cfg_load;
1031	db_load;	2088	db_load;
1032	load_extensions;	2089	load_extensions;
1033	Event::loop;	2090	Event::loop;
1034	}	2091	}
1035		2092
1036	#############################################################################	2093	#############################################################################
1037	# initialisation	2094	# initialisation
1038		2095
1039	sub _perl_reload(&) {	2096	sub reload() {
1040	my ($msg) = @_;	2097	# can/must only be called in main
		2098	if ($Coro::current != $Coro::main) {
		2099	warn "can only reload from main coroutine\n";
		2100	return;
		2101	}
1041		2102
1042	$msg->("reloading...");	2103	warn "reloading...";
		2104
		2105	my $guard = freeze_mainloop;
		2106	cf::emergency_save;
1043		2107
1044	eval {	2108	eval {
		2109	# if anything goes wrong in here, we should simply crash as we already saved
		2110
1045	# cancel all watchers	2111	# cancel all watchers
1046	$_->cancel for Event::all_watchers;	2112	for (Event::all_watchers) {
		2113	$_->cancel if $_->data & WF_AUTOCANCEL;
		2114	}
		2115
		2116	# cancel all extension coros
		2117	$_->cancel for values %EXT_CORO;
		2118	%EXT_CORO = ();
1047		2119
1048	# unload all extensions	2120	# unload all extensions
1049	for (@exts) {	2121	for (@exts) {
1050	$msg->("unloading <$_>");	2122	warn "unloading <$_>";
1051	unload_extension $_;	2123	unload_extension $_;
1052	}	2124	}
1053		2125
1054	# unload all modules loaded from $LIBDIR	2126	# unload all modules loaded from $LIBDIR
1055	while (my ($k, $v) = each %INC) {	2127	while (my ($k, $v) = each %INC) {
1056	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2128	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1057		2129
1058	$msg->("removing <$k>");	2130	warn "removing <$k>";
1059	delete $INC{$k};	2131	delete $INC{$k};
1060		2132
1061	$k =~ s/\.pm$//;	2133	$k =~ s/\.pm$//;
1062	$k =~ s/\//::/g;	2134	$k =~ s/\//::/g;
1063		2135
…		…
1068	Symbol::delete_package $k;	2140	Symbol::delete_package $k;
1069	}	2141	}
1070		2142
1071	# sync database to disk	2143	# sync database to disk
1072	cf::db_sync;	2144	cf::db_sync;
		2145	IO::AIO::flush;
1073		2146
1074	# get rid of safe::, as good as possible	2147	# get rid of safe::, as good as possible
1075	Symbol::delete_package "safe::$_"	2148	Symbol::delete_package "safe::$_"
1076	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2149	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1077		2150
1078	# remove register_script_function callbacks	2151	# remove register_script_function callbacks
1079	# TODO	2152	# TODO
1080		2153
1081	# unload cf.pm "a bit"	2154	# unload cf.pm "a bit"
…		…
1084	# don't, removes xs symbols, too,	2157	# don't, removes xs symbols, too,
1085	# and global variables created in xs	2158	# and global variables created in xs
1086	#Symbol::delete_package __PACKAGE__;	2159	#Symbol::delete_package __PACKAGE__;
1087		2160
1088	# reload cf.pm	2161	# reload cf.pm
1089	$msg->("reloading cf.pm");	2162	warn "reloading cf.pm";
1090	require cf;	2163	require cf;
		2164	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1091		2165
1092	# load database again	2166	# load config and database again
		2167	cf::cfg_load;
1093	cf::db_load;	2168	cf::db_load;
1094		2169
1095	# load extensions	2170	# load extensions
1096	$msg->("load extensions");	2171	warn "load extensions";
1097	cf::load_extensions;	2172	cf::load_extensions;
1098		2173
1099	# reattach attachments to objects	2174	# reattach attachments to objects
1100	$msg->("reattach");	2175	warn "reattach";
1101	_global_reattach;	2176	_global_reattach;
		2177	reattach $_ for values %MAP;
1102	};	2178	};
1103	$msg->($@) if $@;
1104		2179
1105	$msg->("reloaded");	2180	if ($@) {
		2181	warn $@;
		2182	warn "error while reloading, exiting.";
		2183	exit 1;
		2184	}
		2185
		2186	warn "reloaded successfully";
1106	};	2187	};
1107		2188
1108	sub perl_reload() {	2189	#############################################################################
1109	_perl_reload {
1110	warn $_[0];
1111	print "$_[0]\n";
1112	};
1113	}
1114		2190
		2191	unless ($LINK_MAP) {
		2192	$LINK_MAP = cf::map::new;
		2193
		2194	$LINK_MAP->width (41);
		2195	$LINK_MAP->height (41);
		2196	$LINK_MAP->alloc;
		2197	$LINK_MAP->path ("{link}");
		2198	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2199	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2200
		2201	# dirty hack because... archetypes are not yet loaded
		2202	Event->timer (
		2203	after => 10,
		2204	cb => sub {
		2205	$_[0]->w->cancel;
		2206
		2207	# provide some exits "home"
		2208	my $exit = cf::object::new "exit";
		2209
		2210	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2211	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2212	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2213
		2214	$LINK_MAP->insert ($exit->clone, 19, 19);
		2215	$LINK_MAP->insert ($exit->clone, 19, 20);
		2216	$LINK_MAP->insert ($exit->clone, 19, 21);
		2217	$LINK_MAP->insert ($exit->clone, 20, 19);
		2218	$LINK_MAP->insert ($exit->clone, 20, 21);
		2219	$LINK_MAP->insert ($exit->clone, 21, 19);
		2220	$LINK_MAP->insert ($exit->clone, 21, 20);
		2221	$LINK_MAP->insert ($exit->clone, 21, 21);
		2222
		2223	$exit->destroy;
		2224	});
		2225
		2226	$LINK_MAP->{deny_save} = 1;
		2227	$LINK_MAP->{deny_reset} = 1;
		2228
		2229	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2230	}
		2231
		2232	register "<global>", __PACKAGE__;
		2233
1115	register_command "perl-reload", 0, sub {	2234	register_command "reload" => sub {
1116	my ($who, $arg) = @_;	2235	my ($who, $arg) = @_;
1117		2236
1118	if ($who->flag (FLAG_WIZ)) {	2237	if ($who->flag (FLAG_WIZ)) {
1119	_perl_reload {	2238	$who->message ("start of reload.");
1120	warn $_[0];	2239	reload;
1121	$who->message ($_[0]);	2240	$who->message ("end of reload.");
1122	};
1123	}	2241	}
1124	};	2242	};
1125		2243
1126	register "<global>", __PACKAGE__;
1127
1128	unshift @INC, $LIBDIR;	2244	unshift @INC, $LIBDIR;
1129		2245
1130	$TICK_WATCHER = Event->timer (	2246	$TICK_WATCHER = Event->timer (
		2247	reentrant => 0,
1131	prio => 1,	2248	prio => 0,
1132	at => $NEXT_TICK || 1,	2249	at => $NEXT_TICK || $TICK,
		2250	data => WF_AUTOCANCEL,
1133	cb => sub {	2251	cb => sub {
1134	cf::server_tick; # one server iteration	2252	cf::server_tick; # one server iteration
1135		2253	$RUNTIME += $TICK;
1136	my $NOW = Event::time;
1137	$NEXT_TICK += $TICK;	2254	$NEXT_TICK += $TICK;
1138		2255
1139	# if we are delayed by four ticks, skip them all	2256	# if we are delayed by four ticks or more, skip them all
1140	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2257	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1141		2258
1142	$TICK_WATCHER->at ($NEXT_TICK);	2259	$TICK_WATCHER->at ($NEXT_TICK);
1143	$TICK_WATCHER->start;	2260	$TICK_WATCHER->start;
1144	},	2261	},
1145	);	2262	);
1146		2263
		2264	IO::AIO::max_poll_time $TICK * 0.2;
		2265
		2266	Event->io (
		2267	fd => IO::AIO::poll_fileno,
		2268	poll => 'r',
		2269	prio => 5,
		2270	data => WF_AUTOCANCEL,
		2271	cb => \&IO::AIO::poll_cb,
		2272	);
		2273
		2274	Event->timer (
		2275	data => WF_AUTOCANCEL,
		2276	after => 0,
		2277	interval => 10,
		2278	cb => sub {
		2279	(Coro::unblock_sub {
		2280	write_runtime
		2281	or warn "ERROR: unable to write runtime file: $!";
		2282	})->();
		2283	},
		2284	);
		2285
		2286	END { cf::emergency_save }
		2287
1147	1	2288	1
1148		2289

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