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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.83 by root, Mon Dec 11 01:30:41 2006 UTC vs.
Revision 1.121 by root, Tue Jan 2 11:11:52 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;
10	use IO::AIO ();	22	use IO::AIO 2.31 ();
11	use YAML::Syck ();	23	use YAML::Syck ();
12	use Time::HiRes;	24	use Time::HiRes;
13	use Event;	25
14	$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
15		27
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	29	$YAML::Syck::ImplicitUnicode = 1;
18		30
19	use strict;	31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority
20		32
21	_init_vars;	33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		34
23	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
24	our @EVENT;	39	our @EVENT;
25	our $LIBDIR = maps_directory "perl";	40	our $LIBDIR = datadir . "/ext";
26		41
27	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
28	our $TICK_WATCHER;	43	our $TICK_WATCHER;
29	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
30		46
31	our %CFG;	47	our %CFG;
32		48
33	our $uptime;#d#	49	our $UPTIME; $UPTIME ||= time;
34	our $UPTIME;	50	our $RUNTIME;
35	$UPTIME ||= $uptime;#d#	51
36	$UPTIME ||= time;	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];
37		78
38	#############################################################################	79	#############################################################################
39		80
40	=head2 GLOBAL VARIABLES	81	=head2 GLOBAL VARIABLES
41		82
42	=over 4	83	=over 4
43		84
44	=item $cf::UPTIME	85	=item $cf::UPTIME
45		86
46	The timestamp of the server start (so not actually an uptime).	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.
47		93
48	=item $cf::LIBDIR	94	=item $cf::LIBDIR
49		95
50	The perl library directory, where extensions and cf-specific modules can	96	The perl library directory, where extensions and cf-specific modules can
51	be found. It will be added to C<@INC> automatically.	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.
52		102
53	=item $cf::TICK	103	=item $cf::TICK
54		104
55	The interval between server ticks, in seconds.	105	The interval between server ticks, in seconds.
56		106
…		…
64	=cut	114	=cut
65		115
66	BEGIN {	116	BEGIN {
67	*CORE::GLOBAL::warn = sub {	117	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	118	my $msg = join "", @_;
		119	utf8::encode $msg;
		120
69	$msg .= "\n"	121	$msg .= "\n"
70	unless $msg =~ /\n$/;	122	unless $msg =~ /\n$/;
71		123
72	print STDERR "cfperl: $msg";
73	LOG llevError, "cfperl: $msg";	124	LOG llevError, "cfperl: $msg";
74	};	125	};
75	}	126	}
76		127
		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';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	133	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
78		134
79	# we bless all objects into (empty) derived classes to force a method lookup	135	# we bless all objects into (empty) derived classes to force a method lookup
80	# within the Safe compartment.	136	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	137	for my $pkg (qw(
		138	cf::global cf::attachable
		139	cf::object cf::object::player
		140	cf::client cf::player
		141	cf::arch cf::living
		142	cf::map cf::party cf::region
		143	)) {
82	no strict 'refs';	144	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	145	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	146	}
85		147
86	$Event::DIED = sub {	148	$Event::DIED = sub {
…		…
88	};	150	};
89		151
90	my %ext_pkg;	152	my %ext_pkg;
91	my @exts;	153	my @exts;
92	my @hook;	154	my @hook;
93	my %command;
94	my %extcmd;
95		155
96	=head2 UTILITY FUNCTIONS	156	=head2 UTILITY FUNCTIONS
97		157
98	=over 4	158	=over 4
99		159
…		…
121	sub to_json($) {	181	sub to_json($) {
122	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	182	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
123	JSON::Syck::Dump $_[0]	183	JSON::Syck::Dump $_[0]
124	}	184	}
125		185
		186	=item my $guard = cf::guard { BLOCK }
		187
		188	Run the given callback when the guard object gets destroyed (useful for
		189	coroutine cancellations).
		190
		191	You can call C<< ->cancel >> on the guard object to stop the block from
		192	being executed.
		193
		194	=cut
		195
		196	sub guard(&) {
		197	bless \(my $cb = $_[0]), cf::guard::;
		198	}
		199
		200	sub cf::guard::cancel {
		201	${$_[0]} = sub { };
		202	}
		203
		204	sub cf::guard::DESTROY {
		205	${$_[0]}->();
		206	}
		207
		208	=item cf::lock_wait $string
		209
		210	Wait until the given lock is available. See cf::lock_acquire.
		211
		212	=item my $lock = cf::lock_acquire $string
		213
		214	Wait until the given lock is available and then acquires it and returns
		215	a guard object. If the guard object gets destroyed (goes out of scope,
		216	for example when the coroutine gets canceled), the lock is automatically
		217	returned.
		218
		219	Lock names should begin with a unique identifier (for example, find_map
		220	uses map_find and load_map uses map_load).
		221
		222	=cut
		223
		224	our %LOCK;
		225
		226	sub lock_wait($) {
		227	my ($key) = @_;
		228
		229	# wait for lock, if any
		230	while ($LOCK{$key}) {
		231	push @{ $LOCK{$key} }, $Coro::current;
		232	Coro::schedule;
		233	}
		234	}
		235
		236	sub lock_acquire($) {
		237	my ($key) = @_;
		238
		239	# wait, to be sure we are not locked
		240	lock_wait $key;
		241
		242	$LOCK{$key} = [];
		243
		244	cf::guard {
		245	# wake up all waiters, to be on the safe side
		246	$_->ready for @{ delete $LOCK{$key} };
		247	}
		248	}
		249
		250	=item cf::sync_job { BLOCK }
		251
		252	The design of crossfire+ requires that the main coro ($Coro::main) is
		253	always able to handle events or runnable, as crossfire+ is only partly
		254	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		255
		256	If it must be done, put the blocking parts into C<sync_job>. This will run
		257	the given BLOCK in another coroutine while waiting for the result. The
		258	server will be frozen during this time, so the block should either finish
		259	fast or be very important.
		260
		261	=cut
		262
		263	sub sync_job(&) {
		264	my ($job) = @_;
		265
		266	if ($Coro::current == $Coro::main) {
		267	# this is the main coro, too bad, we have to block
		268	# till the operation succeeds, freezing the server :/
		269
		270	# TODO: use suspend/resume instead
		271	# (but this is cancel-safe)
		272	local $FREEZE = 1;
		273
		274	my $busy = 1;
		275	my @res;
		276
		277	(Coro::async {
		278	@res = eval { $job->() };
		279	warn $@ if $@;
		280	undef $busy;
		281	})->prio (Coro::PRIO_MAX);
		282
		283	while ($busy) {
		284	Coro::cede_notself;
		285	Event::one_event unless Coro::nready;
		286	}
		287
		288	wantarray ? @res : $res[0]
		289	} else {
		290	# we are in another coroutine, how wonderful, everything just works
		291
		292	$job->()
		293	}
		294	}
		295
		296	=item $coro = cf::coro { BLOCK }
		297
		298	Creates and returns a new coro. This coro is automcatially being canceled
		299	when the extension calling this is being unloaded.
		300
		301	=cut
		302
		303	sub coro(&) {
		304	my $cb = shift;
		305
		306	my $coro; $coro = async {
		307	eval {
		308	$cb->();
		309	};
		310	warn $@ if $@;
		311	};
		312
		313	$coro->on_destroy (sub {
		314	delete $EXT_CORO{$coro+0};
		315	});
		316	$EXT_CORO{$coro+0} = $coro;
		317
		318	$coro
		319	}
		320
		321	sub write_runtime {
		322	my $runtime = cf::localdir . "/runtime";
		323
		324	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		325	or return;
		326
		327	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		328	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		329	and return;
		330
		331	aio_fsync $fh
		332	and return;
		333
		334	close $fh
		335	or return;
		336
		337	aio_rename "$runtime~", $runtime
		338	and return;
		339
		340	1
		341	}
		342
126	=back	343	=back
127		344
128	=cut	345	=cut
129		346
130	#############################################################################	347	#############################################################################
131		348
132	=head2 EVENTS AND OBJECT ATTACHMENTS	349	package cf::path;
		350
		351	sub new {
		352	my ($class, $path, $base) = @_;
		353
		354	$path = $path->as_string if ref $path;
		355
		356	my $self = bless { }, $class;
		357
		358	# {... are special paths that are not touched
		359	# ?xxx/... are special absolute paths
		360	# ?random/... random maps
		361	# /! non-realised random map exit
		362	# /... normal maps
		363	# ~/... per-player maps without a specific player (DO NOT USE)
		364	# ~user/... per-player map of a specific user
		365
		366	if ($path =~ /^{/) {
		367	# fine as it is
		368	} elsif ($path =~ s{^\?random/}{}) {
		369	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		370	$self->{random} = cf::from_json $data;
		371	} else {
		372	if ($path =~ s{^~([^/]+)?}{}) {
		373	$self->{user_rel} = 1;
		374
		375	if (defined $1) {
		376	$self->{user} = $1;
		377	} elsif ($base =~ m{^~([^/]+)/}) {
		378	$self->{user} = $1;
		379	} else {
		380	warn "cannot resolve user-relative path without user <$path,$base>\n";
		381	}
		382	} elsif ($path =~ /^\//) {
		383	# already absolute
		384	} else {
		385	$base =~ s{[^/]+/?$}{};
		386	return $class->new ("$base/$path");
		387	}
		388
		389	for ($path) {
		390	redo if s{/\.?/}{/};
		391	redo if s{/[^/]+/\.\./}{/};
		392	}
		393	}
		394
		395	$self->{path} = $path;
		396
		397	$self
		398	}
		399
		400	# the name / primary key / in-game path
		401	sub as_string {
		402	my ($self) = @_;
		403
		404	$self->{user_rel} ? "~$self->{user}$self->{path}"
		405	: $self->{random} ? "?random/$self->{path}"
		406	: $self->{path}
		407	}
		408
		409	# the displayed name, this is a one way mapping
		410	sub visible_name {
		411	my ($self) = @_;
		412
		413	# if (my $rmp = $self->{random}) {
		414	# # todo: be more intelligent about this
		415	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		416	# } else {
		417	$self->as_string
		418	# }
		419	}
		420
		421	# escape the /'s in the path
		422	sub _escaped_path {
		423	# ∕ is U+2215
		424	(my $path = $_[0]{path}) =~ s/\//∕/g;
		425	$path
		426	}
		427
		428	# the original (read-only) location
		429	sub load_path {
		430	my ($self) = @_;
		431
		432	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		433	}
		434
		435	# the temporary/swap location
		436	sub save_path {
		437	my ($self) = @_;
		438
		439	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		440	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		441	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		442	}
		443
		444	# the unique path, might be eq to save_path
		445	sub uniq_path {
		446	my ($self) = @_;
		447
		448	$self->{user_rel} || $self->{random}
		449	? undef
		450	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		451	}
		452
		453	# return random map parameters, or undef
		454	sub random_map_params {
		455	my ($self) = @_;
		456
		457	$self->{random}
		458	}
		459
		460	# this is somewhat ugly, but style maps do need special treatment
		461	sub is_style_map {
		462	$_[0]{path} =~ m{^/styles/}
		463	}
		464
		465	package cf;
		466
		467	#############################################################################
		468
		469	=head2 ATTACHABLE OBJECTS
		470
		471	Many objects in crossfire are so-called attachable objects. That means you can
		472	attach callbacks/event handlers (a collection of which is called an "attachment")
		473	to it. All such attachable objects support the following methods.
		474
		475	In the following description, CLASS can be any of C<global>, C<object>
		476	C<player>, C<client> or C<map> (i.e. the attachable objects in
		477	crossfire+).
133		478
134	=over 4	479	=over 4
135		480
136	=item $object->attach ($attachment, key => $value...)
137
138	=item $object->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to an object.
141
142	=item $player->attach ($attachment, key => $value...)
143
144	=item $player->detach ($attachment)
145
146	Attach/detach a pre-registered attachment to a player.
147
148	=item $map->attach ($attachment, key => $value...)	481	=item $attachable->attach ($attachment, key => $value...)
149		482
150	=item $map->detach ($attachment)	483	=item $attachable->detach ($attachment)
151		484
152	Attach/detach a pre-registered attachment to a map.	485	Attach/detach a pre-registered attachment to a specific object and give it
		486	the specified key/value pairs as arguments.
153		487
154	=item $bool = $object->attached ($name)	488	Example, attach a minesweeper attachment to the given object, making it a
		489	10x10 minesweeper game:
155		490
156	=item $bool = $player->attached ($name)	491	$obj->attach (minesweeper => width => 10, height => 10);
157		492
158	=item $bool = $map->attached ($name)	493	=item $bool = $attachable->attached ($name)
159		494
160	Checks wether the named attachment is currently attached to the object.	495	Checks wether the named attachment is currently attached to the object.
161		496
162	=item cf::attach_global ...	497	=item cf::CLASS->attach ...
163		498
164	Attach handlers for global events.	499	=item cf::CLASS->detach ...
165		500
166	This and all following C<attach_*>-functions expect any number of the	501	Define an anonymous attachment and attach it to all objects of the given
167	following handler/hook descriptions:	502	CLASS. See the next function for an explanation of its arguments.
		503
		504	You can attach to global events by using the C<cf::global> class.
		505
		506	Example, log all player logins:
		507
		508	cf::player->attach (
		509	on_login => sub {
		510	my ($pl) = @_;
		511	...
		512	},
		513	);
		514
		515	Example, attach to the jeweler skill:
		516
		517	cf::object->attach (
		518	type => cf::SKILL,
		519	subtype => cf::SK_JEWELER,
		520	on_use_skill => sub {
		521	my ($sk, $ob, $part, $dir, $msg) = @_;
		522	...
		523	},
		524	);
		525
		526	=item cf::CLASS::attachment $name, ...
		527
		528	Register an attachment by C<$name> through which attachable objects of the
		529	given CLASS can refer to this attachment.
		530
		531	Some classes such as crossfire maps and objects can specify attachments
		532	that are attached at load/instantiate time, thus the need for a name.
		533
		534	These calls expect any number of the following handler/hook descriptions:
168		535
169	=over 4	536	=over 4
170		537
171	=item prio => $number	538	=item prio => $number
172		539
…		…
174	by another C<prio> setting). Lower priority handlers get executed	541	by another C<prio> setting). Lower priority handlers get executed
175	earlier. The default priority is C<0>, and many built-in handlers are	542	earlier. The default priority is C<0>, and many built-in handlers are
176	registered at priority C<-1000>, so lower priorities should not be used	543	registered at priority C<-1000>, so lower priorities should not be used
177	unless you know what you are doing.	544	unless you know what you are doing.
178		545
		546	=item type => $type
		547
		548	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		549	given type of objects only (the additional parameter C<subtype> can be
		550	used to further limit to the given subtype).
		551
179	=item on_I<event> => \&cb	552	=item on_I<event> => \&cb
180		553
181	Call the given code reference whenever the named event happens (event is	554	Call the given code reference whenever the named event happens (event is
182	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	555	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
183	handlers are recognised generally depends on the type of object these	556	handlers are recognised generally depends on the type of object these
…		…
192	package and register them. Only handlers for eevents supported by the	565	package and register them. Only handlers for eevents supported by the
193	object/class are recognised.	566	object/class are recognised.
194		567
195	=back	568	=back
196		569
197	=item cf::attach_to_type $object_type, $subtype, ...	570	Example, define an attachment called "sockpuppet" that calls the given
		571	event handler when a monster attacks:
198		572
199	Attach handlers for a specific object type (e.g. TRANSPORT) and	573	cf::object::attachment sockpuppet =>
200	subtype. If C<$subtype> is zero or undef, matches all objects of the given	574	on_skill_attack => sub {
201	type.	575	my ($self, $victim) = @_;
202		576	...
203	=item cf::attach_to_objects ...
204
205	Attach handlers to all objects. Do not use this except for debugging or
206	very rare events, as handlers are (obviously) called for I<all> objects in
207	the game.
208
209	=item cf::attach_to_players ...
210
211	Attach handlers to all players.
212
213	=item cf::attach_to_maps ...
214
215	Attach handlers to all maps.
216
217	=item cf:register_attachment $name, ...
218
219	Register an attachment by name through which objects can refer to this
220	attachment.
221
222	=item cf:register_player_attachment $name, ...
223
224	Register an attachment by name through which players can refer to this
225	attachment.
226
227	=item cf:register_map_attachment $name, ...
228
229	Register an attachment by name through which maps can refer to this
230	attachment.
231
232	=cut
233
234	# the following variables are defined in .xs and must not be re-created
235	our @CB_GLOBAL = (); # registry for all global events
236	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
237	our @CB_PLAYER = ();
238	our @CB_TYPE = (); # registry for type (cf-object class) based events
239	our @CB_MAP = ();
240
241	my %attachment;
242
243	sub _attach_cb($\%$$$) {
244	my ($registry, $undo, $event, $prio, $cb) = @_;
245
246	use sort 'stable';
247
248	$cb = [$prio, $cb];
249
250	@{$registry->[$event]} = sort
251	{ $a->[0] cmp $b->[0] }
252	@{$registry->[$event] || []}, $cb;
253
254	push @{$undo->{cb}}, [$event, $cb];
255	}
256
257	# attach handles attaching event callbacks
258	# the only thing the caller has to do is pass the correct
259	# registry (== where the callback attaches to).
260	sub _attach(\@$@) {
261	my ($registry, $klass, @arg) = @_;
262
263	my $prio = 0;
264
265	my %undo = (
266	registry => $registry,
267	cb => [],
268	);
269
270	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
271
272	while (@arg) {
273	my $type = shift @arg;
274
275	if ($type eq "prio") {
276	$prio = shift @arg;
277
278	} elsif ($type eq "package") {
279	my $pkg = shift @arg;
280
281	while (my ($name, $id) = each %cb_id) {
282	if (my $cb = $pkg->can ($name)) {
283	_attach_cb $registry, %undo, $id, $prio, $cb;
284	}
285	}	577	}
286
287	} elsif (exists $cb_id{$type}) {
288	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
289
290	} elsif (ref $type) {
291	warn "attaching objects not supported, ignoring.\n";
292
293	} else {
294	shift @arg;
295	warn "attach argument '$type' not supported, ignoring.\n";
296	}
297	}
298
299	\%undo
300	}
301
302	sub _attach_attachment {
303	my ($obj, $name, %arg) = @_;
304
305	return if exists $obj->{_attachment}{$name};
306
307	my $res;
308
309	if (my $attach = $attachment{$name}) {
310	my $registry = $obj->registry;
311
312	for (@$attach) {
313	my ($klass, @attach) = @$_;
314	$res = _attach @$registry, $klass, @attach;
315	}
316
317	$obj->{$name} = \%arg;
318	} else {
319	warn "object uses attachment '$name' that is not available, postponing.\n";
320	}
321
322	$obj->{_attachment}{$name} = undef;
323
324	$res->{attachment} = $name;
325	$res
326	}
327
328	*cf::object::attach =
329	*cf::player::attach =
330	*cf::map::attach = sub {
331	my ($obj, $name, %arg) = @_;
332
333	_attach_attachment $obj, $name, %arg;
334	};
335
336	# all those should be optimised
337	*cf::object::detach =
338	*cf::player::detach =
339	*cf::map::detach = sub {
340	my ($obj, $name) = @_;
341
342	delete $obj->{_attachment}{$name};
343	reattach ($obj);
344	};
345
346	*cf::object::attached =
347	*cf::player::attached =
348	*cf::map::attached = sub {
349	my ($obj, $name) = @_;
350
351	exists $obj->{_attachment}{$name}
352	};
353
354	sub attach_global {
355	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
356	}
357
358	sub attach_to_type {
359	my $type = shift;
360	my $subtype = shift;
361
362	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
363	}
364
365	sub attach_to_objects {
366	_attach @CB_OBJECT, KLASS_OBJECT, @_
367	}
368
369	sub attach_to_players {
370	_attach @CB_PLAYER, KLASS_PLAYER, @_
371	}
372
373	sub attach_to_maps {
374	_attach @CB_MAP, KLASS_MAP, @_
375	}
376
377	sub register_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_OBJECT, @_]];
381	}
382
383	sub register_player_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_PLAYER, @_]];
387	}
388
389	sub register_map_attachment {
390	my $name = shift;
391
392	$attachment{$name} = [[KLASS_MAP, @_]];
393	}
394
395	our $override;
396	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
397
398	sub override {
399	$override = 1;
400	@invoke_results = ();
401	}
402
403	sub do_invoke {
404	my $event = shift;
405	my $callbacks = shift;
406
407	@invoke_results = ();
408
409	local $override;
410
411	for (@$callbacks) {
412	eval { &{$_->[1]} };
413
414	if ($@) {
415	warn "$@";
416	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
417	override;
418	}
419
420	return 1 if $override;
421	}
422
423	0	578	}
424	}
425		579
426	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	580	=item $attachable->valid
427
428	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
429
430	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
431
432	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
433
434	Generate a global/object/player/map-specific event with the given arguments.
435
436	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
437	removed in future versions), and there is no public API to access override
438	results (if you must, access C<@cf::invoke_results> directly).
439
440	=back
441
442	=cut
443
444	#############################################################################
445
446	=head2 METHODS VALID FOR ALL CORE OBJECTS
447
448	=over 4
449
450	=item $object->valid, $player->valid, $map->valid
451		581
452	Just because you have a perl object does not mean that the corresponding	582	Just because you have a perl object does not mean that the corresponding
453	C-level object still exists. If you try to access an object that has no	583	C-level object still exists. If you try to access an object that has no
454	valid C counterpart anymore you get an exception at runtime. This method	584	valid C counterpart anymore you get an exception at runtime. This method
455	can be used to test for existence of the C object part without causing an	585	can be used to test for existence of the C object part without causing an
456	exception.	586	exception.
457		587
		588	=cut
		589
		590	# the following variables are defined in .xs and must not be re-created
		591	our @CB_GLOBAL = (); # registry for all global events
		592	our @CB_ATTACHABLE = (); # registry for all attachables
		593	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		594	our @CB_PLAYER = ();
		595	our @CB_CLIENT = ();
		596	our @CB_TYPE = (); # registry for type (cf-object class) based events
		597	our @CB_MAP = ();
		598
		599	my %attachment;
		600
		601	sub _attach_cb($$$$) {
		602	my ($registry, $event, $prio, $cb) = @_;
		603
		604	use sort 'stable';
		605
		606	$cb = [$prio, $cb];
		607
		608	@{$registry->[$event]} = sort
		609	{ $a->[0] cmp $b->[0] }
		610	@{$registry->[$event] || []}, $cb;
		611	}
		612
		613	# hack
		614	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		615
		616	# attach handles attaching event callbacks
		617	# the only thing the caller has to do is pass the correct
		618	# registry (== where the callback attaches to).
		619	sub _attach {
		620	my ($registry, $klass, @arg) = @_;
		621
		622	my $object_type;
		623	my $prio = 0;
		624	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		625
		626	#TODO: get rid of this hack
		627	if ($attachable_klass{$klass}) {
		628	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		629	}
		630
		631	while (@arg) {
		632	my $type = shift @arg;
		633
		634	if ($type eq "prio") {
		635	$prio = shift @arg;
		636
		637	} elsif ($type eq "type") {
		638	$object_type = shift @arg;
		639	$registry = $CB_TYPE[$object_type] ||= [];
		640
		641	} elsif ($type eq "subtype") {
		642	defined $object_type or Carp::croak "subtype specified without type";
		643	my $object_subtype = shift @arg;
		644	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		645
		646	} elsif ($type eq "package") {
		647	my $pkg = shift @arg;
		648
		649	while (my ($name, $id) = each %cb_id) {
		650	if (my $cb = $pkg->can ($name)) {
		651	_attach_cb $registry, $id, $prio, $cb;
		652	}
		653	}
		654
		655	} elsif (exists $cb_id{$type}) {
		656	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		657
		658	} elsif (ref $type) {
		659	warn "attaching objects not supported, ignoring.\n";
		660
		661	} else {
		662	shift @arg;
		663	warn "attach argument '$type' not supported, ignoring.\n";
		664	}
		665	}
		666	}
		667
		668	sub _object_attach {
		669	my ($obj, $name, %arg) = @_;
		670
		671	return if exists $obj->{_attachment}{$name};
		672
		673	if (my $attach = $attachment{$name}) {
		674	my $registry = $obj->registry;
		675
		676	for (@$attach) {
		677	my ($klass, @attach) = @$_;
		678	_attach $registry, $klass, @attach;
		679	}
		680
		681	$obj->{$name} = \%arg;
		682	} else {
		683	warn "object uses attachment '$name' that is not available, postponing.\n";
		684	}
		685
		686	$obj->{_attachment}{$name} = undef;
		687	}
		688
		689	sub cf::attachable::attach {
		690	if (ref $_[0]) {
		691	_object_attach @_;
		692	} else {
		693	_attach shift->_attach_registry, @_;
		694	}
		695	};
		696
		697	# all those should be optimised
		698	sub cf::attachable::detach {
		699	my ($obj, $name) = @_;
		700
		701	if (ref $obj) {
		702	delete $obj->{_attachment}{$name};
		703	reattach ($obj);
		704	} else {
		705	Carp::croak "cannot, currently, detach class attachments";
		706	}
		707	};
		708
		709	sub cf::attachable::attached {
		710	my ($obj, $name) = @_;
		711
		712	exists $obj->{_attachment}{$name}
		713	}
		714
		715	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		716	eval "#line " . __LINE__ . " 'cf.pm'
		717	sub cf::\L$klass\E::_attach_registry {
		718	(\\\@CB_$klass, KLASS_$klass)
		719	}
		720
		721	sub cf::\L$klass\E::attachment {
		722	my \$name = shift;
		723
		724	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		725	}
		726	";
		727	die if $@;
		728	}
		729
		730	our $override;
		731	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		732
		733	sub override {
		734	$override = 1;
		735	@invoke_results = ();
		736	}
		737
		738	sub do_invoke {
		739	my $event = shift;
		740	my $callbacks = shift;
		741
		742	@invoke_results = ();
		743
		744	local $override;
		745
		746	for (@$callbacks) {
		747	eval { &{$_->[1]} };
		748
		749	if ($@) {
		750	warn "$@";
		751	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		752	override;
		753	}
		754
		755	return 1 if $override;
		756	}
		757
		758	0
		759	}
		760
		761	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		762
		763	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		764
		765	Generate an object-specific event with the given arguments.
		766
		767	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		768	removed in future versions), and there is no public API to access override
		769	results (if you must, access C<@cf::invoke_results> directly).
		770
458	=back	771	=back
459		772
460	=cut	773	=cut
461
462	*cf::object::valid =
463	*cf::player::valid =
464	*cf::map::valid = \&cf::_valid;
465		774
466	#############################################################################	775	#############################################################################
467	# object support	776	# object support
468		777
469	sub instantiate {
470	my ($obj, $data) = @_;
471
472	$data = from_json $data;
473
474	for (@$data) {
475	my ($name, $args) = @$_;
476
477	$obj->attach ($name, %{$args || {} });
478	}
479	}
480
481	# basically do the same as instantiate, without calling instantiate
482	sub reattach {	778	sub reattach {
		779	# basically do the same as instantiate, without calling instantiate
483	my ($obj) = @_;	780	my ($obj) = @_;
		781
484	my $registry = $obj->registry;	782	my $registry = $obj->registry;
485		783
486	@$registry = ();	784	@$registry = ();
487		785
488	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	786	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
489		787
490	for my $name (keys %{ $obj->{_attachment} || {} }) {	788	for my $name (keys %{ $obj->{_attachment} || {} }) {
491	if (my $attach = $attachment{$name}) {	789	if (my $attach = $attachment{$name}) {
492	for (@$attach) {	790	for (@$attach) {
493	my ($klass, @attach) = @$_;	791	my ($klass, @attach) = @$_;
494	_attach @$registry, $klass, @attach;	792	_attach $registry, $klass, @attach;
495	}	793	}
496	} else {	794	} else {
497	warn "object uses attachment '$name' that is not available, postponing.\n";	795	warn "object uses attachment '$name' that is not available, postponing.\n";
498	}	796	}
499	}	797	}
500	}	798	}
501		799
502	sub object_freezer_save {	800	cf::attachable->attach (
503	my ($filename, $rdata, $objs) = @_;
504
505	if (length $$rdata) {
506	warn sprintf "saving %s (%d,%d)\n",
507	$filename, length $$rdata, scalar @$objs;
508
509	if (open my $fh, ">:raw", "$filename~") {
510	chmod SAVE_MODE, $fh;
511	syswrite $fh, $$rdata;
512	close $fh;
513
514	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
517	close $fh;
518	rename "$filename.pst~", "$filename.pst";
519	} else {
520	unlink "$filename.pst";
521	}
522
523	rename "$filename~", $filename;
524	} else {
525	warn "FATAL: $filename~: $!\n";
526	}
527	} else {
528	unlink $filename;
529	unlink "$filename.pst";
530	}
531	}
532
533	sub object_freezer_as_string {
534	my ($rdata, $objs) = @_;
535
536	use Data::Dumper;
537
538	$$rdata . Dumper $objs
539	}
540
541	sub object_thawer_load {
542	my ($filename) = @_;
543
544	local $/;
545
546	my $av;
547
548	#TODO: use sysread etc.
549	if (open my $data, "<:raw:perlio", $filename) {
550	$data = <$data>;
551	if (open my $pst, "<:raw:perlio", "$filename.pst") {
552	$av = eval { (Storable::thaw <$pst>)->{objs} };
553	}
554	return ($data, $av);
555	}
556
557	()
558	}
559
560	attach_to_objects
561	prio => -1000000,	801	prio => -1000000,
		802	on_instantiate => sub {
		803	my ($obj, $data) = @_;
		804
		805	$data = from_json $data;
		806
		807	for (@$data) {
		808	my ($name, $args) = @$_;
		809
		810	$obj->attach ($name, %{$args || {} });
		811	}
		812	},
		813	on_reattach => \&reattach,
562	on_clone => sub {	814	on_clone => sub {
563	my ($src, $dst) = @_;	815	my ($src, $dst) = @_;
564		816
565	@{$dst->registry} = @{$src->registry};	817	@{$dst->registry} = @{$src->registry};
566		818
567	%$dst = %$src;	819	%$dst = %$src;
568		820
569	%{$dst->{_attachment}} = %{$src->{_attachment}}	821	%{$dst->{_attachment}} = %{$src->{_attachment}}
570	if exists $src->{_attachment};	822	if exists $src->{_attachment};
571	},	823	},
572	;	824	);
		825
		826	sub object_freezer_save {
		827	my ($filename, $rdata, $objs) = @_;
		828
		829	sync_job {
		830	if (length $$rdata) {
		831	warn sprintf "saving %s (%d,%d)\n",
		832	$filename, length $$rdata, scalar @$objs;
		833
		834	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		835	chmod SAVE_MODE, $fh;
		836	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		837	aio_fsync $fh;
		838	close $fh;
		839
		840	if (@$objs) {
		841	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		842	chmod SAVE_MODE, $fh;
		843	my $data = Storable::nfreeze { version => 1, objs => $objs };
		844	aio_write $fh, 0, (length $data), $data, 0;
		845	aio_fsync $fh;
		846	close $fh;
		847	aio_rename "$filename.pst~", "$filename.pst";
		848	}
		849	} else {
		850	aio_unlink "$filename.pst";
		851	}
		852
		853	aio_rename "$filename~", $filename;
		854	} else {
		855	warn "FATAL: $filename~: $!\n";
		856	}
		857	} else {
		858	aio_unlink $filename;
		859	aio_unlink "$filename.pst";
		860	}
		861	}
		862	}
		863
		864	sub object_freezer_as_string {
		865	my ($rdata, $objs) = @_;
		866
		867	use Data::Dumper;
		868
		869	$$rdata . Dumper $objs
		870	}
		871
		872	sub object_thawer_load {
		873	my ($filename) = @_;
		874
		875	my ($data, $av);
		876
		877	(aio_load $filename, $data) >= 0
		878	or return;
		879
		880	unless (aio_stat "$filename.pst") {
		881	(aio_load "$filename.pst", $av) >= 0
		882	or return;
		883	$av = eval { (Storable::thaw $av)->{objs} };
		884	}
		885
		886	warn sprintf "loading %s (%d)\n",
		887	$filename, length $data, scalar @{$av || []};#d#
		888	return ($data, $av);
		889	}
573		890
574	#############################################################################	891	#############################################################################
575	# old plug-in events	892	# command handling &c
576		893
577	sub inject_event {	894	=item cf::register_command $name => \&callback($ob,$args);
578	my $extension = shift;
579	my $event_code = shift;
580		895
581	my $cb = $hook[$event_code]{$extension}	896	Register a callback for execution when the client sends the user command
582	or return;	897	$name.
583		898
584	&$cb	899	=cut
585	}
586
587	sub inject_global_event {
588	my $event = shift;
589
590	my $cb = $hook[$event]
591	or return;
592
593	List::Util::max map &$_, values %$cb
594	}
595
596	sub inject_command {
597	my ($name, $obj, $params) = @_;
598
599	for my $cmd (@{ $command{$name} }) {
600	$cmd->[1]->($obj, $params);
601	}
602
603	-1
604	}
605		900
606	sub register_command {	901	sub register_command {
607	my ($name, $time, $cb) = @_;	902	my ($name, $cb) = @_;
608		903
609	my $caller = caller;	904	my $caller = caller;
610	#warn "registering command '$name/$time' to '$caller'";	905	#warn "registering command '$name/$time' to '$caller'";
611		906
612	push @{ $command{$name} }, [$time, $cb, $caller];	907	push @{ $COMMAND{$name} }, [$caller, $cb];
613	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
614	}	908	}
		909
		910	=item cf::register_extcmd $name => \&callback($pl,$packet);
		911
		912	Register a callbackf ro execution when the client sends an extcmd packet.
		913
		914	If the callback returns something, it is sent back as if reply was being
		915	called.
		916
		917	=cut
615		918
616	sub register_extcmd {	919	sub register_extcmd {
617	my ($name, $cb) = @_;	920	my ($name, $cb) = @_;
618		921
619	my $caller = caller;	922	my $caller = caller;
620	#warn "registering extcmd '$name' to '$caller'";	923	#warn "registering extcmd '$name' to '$caller'";
621		924
622	$extcmd{$name} = [$cb, $caller];	925	$EXTCMD{$name} = [$cb, $caller];
623	}	926	}
		927
		928	cf::player->attach (
		929	on_command => sub {
		930	my ($pl, $name, $params) = @_;
		931
		932	my $cb = $COMMAND{$name}
		933	or return;
		934
		935	for my $cmd (@$cb) {
		936	$cmd->[1]->($pl->ob, $params);
		937	}
		938
		939	cf::override;
		940	},
		941	on_extcmd => sub {
		942	my ($pl, $buf) = @_;
		943
		944	my $msg = eval { from_json $buf };
		945
		946	if (ref $msg) {
		947	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		948	if (my %reply = $cb->[0]->($pl, $msg)) {
		949	$pl->ext_reply ($msg->{msgid}, %reply);
		950	}
		951	}
		952	} else {
		953	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		954	}
		955
		956	cf::override;
		957	},
		958	);
624		959
625	sub register {	960	sub register {
626	my ($base, $pkg) = @_;	961	my ($base, $pkg) = @_;
627		962
628	#TODO	963	#TODO
…		…
671	# for my $idx (0 .. $#PLUGIN_EVENT) {	1006	# for my $idx (0 .. $#PLUGIN_EVENT) {
672	# delete $hook[$idx]{$pkg};	1007	# delete $hook[$idx]{$pkg};
673	# }	1008	# }
674		1009
675	# remove commands	1010	# remove commands
676	for my $name (keys %command) {	1011	for my $name (keys %COMMAND) {
677	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1012	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
678		1013
679	if (@cb) {	1014	if (@cb) {
680	$command{$name} = \@cb;	1015	$COMMAND{$name} = \@cb;
681	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
682	} else {	1016	} else {
683	delete $command{$name};
684	delete $COMMAND{"$name\000"};	1017	delete $COMMAND{$name};
685	}	1018	}
686	}	1019	}
687		1020
688	# remove extcmds	1021	# remove extcmds
689	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1022	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
690	delete $extcmd{$name};	1023	delete $EXTCMD{$name};
691	}	1024	}
692		1025
693	if (my $cb = $pkg->can ("unload")) {	1026	if (my $cb = $pkg->can ("unload")) {
694	eval {	1027	eval {
695	$cb->($pkg);	1028	$cb->($pkg);
…		…
699		1032
700	Symbol::delete_package $pkg;	1033	Symbol::delete_package $pkg;
701	}	1034	}
702		1035
703	sub load_extensions {	1036	sub load_extensions {
704	my $LIBDIR = maps_directory "perl";
705
706	for my $ext (<$LIBDIR/*.ext>) {	1037	for my $ext (<$LIBDIR/*.ext>) {
707	next unless -r $ext;	1038	next unless -r $ext;
708	eval {	1039	eval {
709	load_extension $ext;	1040	load_extension $ext;
710	1	1041	1
711	} or warn "$ext not loaded: $@";	1042	} or warn "$ext not loaded: $@";
712	}	1043	}
713	}	1044	}
714		1045
715	#############################################################################	1046	#############################################################################
716	# extcmd framework, basically convert ext <msg>
717	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
718
719	attach_to_players
720	on_extcmd => sub {
721	my ($pl, $buf) = @_;
722
723	my $msg = eval { from_json $buf };
724
725	if (ref $msg) {
726	if (my $cb = $extcmd{$msg->{msgtype}}) {
727	if (my %reply = $cb->[0]->($pl, $msg)) {
728	$pl->ext_reply ($msg->{msgid}, %reply);
729	}
730	}
731	} else {
732	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
733	}
734
735	cf::override;
736	},
737	;
738
739	#############################################################################
740	# load/save/clean perl data associated with a map	1047	# load/save/clean perl data associated with a map
741		1048
742	*cf::mapsupport::on_clean = sub {	1049	*cf::mapsupport::on_clean = sub {
743	my ($map) = @_;	1050	my ($map) = @_;
744		1051
…		…
746	defined $path or return;	1053	defined $path or return;
747		1054
748	unlink "$path.pst";	1055	unlink "$path.pst";
749	};	1056	};
750		1057
751	attach_to_maps prio => -10000, package => cf::mapsupport::;	1058	cf::map->attach (prio => -10000, package => cf::mapsupport::);
752		1059
753	#############################################################################	1060	#############################################################################
754	# load/save perl data associated with player->ob objects	1061	# load/save perl data associated with player->ob objects
755		1062
756	sub all_objects(@) {	1063	sub all_objects(@) {
757	@_, map all_objects ($_->inv), @_	1064	@_, map all_objects ($_->inv), @_
758	}	1065	}
759		1066
760	# TODO: compatibility cruft, remove when no longer needed	1067	# TODO: compatibility cruft, remove when no longer needed
761	attach_to_players	1068	cf::player->attach (
762	on_load => sub {	1069	on_load => sub {
763	my ($pl, $path) = @_;	1070	my ($pl, $path) = @_;
764		1071
765	for my $o (all_objects $pl->ob) {	1072	for my $o (all_objects $pl->ob) {
766	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1073	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
768		1075
769	%$o = %{ Storable::thaw pack "H*", $value };	1076	%$o = %{ Storable::thaw pack "H*", $value };
770	}	1077	}
771	}	1078	}
772	},	1079	},
773	;	1080	);
774		1081
775	#############################################################################	1082	#############################################################################
776		1083
777	=head2 CORE EXTENSIONS	1084	=head2 CORE EXTENSIONS
778		1085
779	Functions and methods that extend core crossfire objects.	1086	Functions and methods that extend core crossfire objects.
		1087
		1088	=head3 cf::player
780		1089
781	=over 4	1090	=over 4
782		1091
783	=item cf::player::exists $login	1092	=item cf::player::exists $login
784		1093
…		…
789	sub cf::player::exists($) {	1098	sub cf::player::exists($) {
790	cf::player::find $_[0]	1099	cf::player::find $_[0]
791	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1100	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
792	}	1101	}
793		1102
		1103	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1104
		1105	Sends an ext reply to the player.
		1106
		1107	=cut
		1108
		1109	sub cf::player::ext_reply($$$%) {
		1110	my ($self, $id, %msg) = @_;
		1111
		1112	$msg{msgid} = $id;
		1113
		1114	$self->send ("ext " . to_json \%msg);
		1115	}
		1116
		1117	=back
		1118
		1119
		1120	=head3 cf::map
		1121
		1122	=over 4
		1123
		1124	=cut
		1125
		1126	package cf::map;
		1127
		1128	use Fcntl;
		1129	use Coro::AIO;
		1130
		1131	our $MAX_RESET = 7200;
		1132	our $DEFAULT_RESET = 3600;
		1133
		1134	sub generate_random_map {
		1135	my ($path, $rmp) = @_;
		1136
		1137	# mit "rum" bekleckern, nicht
		1138	cf::map::_create_random_map
		1139	$path,
		1140	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1141	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1142	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1143	$rmp->{exit_on_final_map},
		1144	$rmp->{xsize}, $rmp->{ysize},
		1145	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1146	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1147	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1148	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1149	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1150	(cf::region::find $rmp->{region})
		1151	}
		1152
		1153	# and all this just because we cannot iterate over
		1154	# all maps in C++...
		1155	sub change_all_map_light {
		1156	my ($change) = @_;
		1157
		1158	$_->change_map_light ($change) for values %cf::MAP;
		1159	}
		1160
		1161	sub try_load_header($) {
		1162	my ($path) = @_;
		1163
		1164	utf8::encode $path;
		1165	aio_open $path, O_RDONLY, 0
		1166	or return;
		1167
		1168	my $map = cf::map::new
		1169	or return;
		1170
		1171	$map->load_header ($path)
		1172	or return;
		1173
		1174	$map->{load_path} = $path;
		1175
		1176	$map
		1177	}
		1178
		1179	sub find_map {
		1180	my ($path, $origin) = @_;
		1181
		1182	#warn "find_map<$path,$origin>\n";#d#
		1183
		1184	$path = new cf::path $path, $origin && $origin->path;
		1185	my $key = $path->as_string;
		1186
		1187	cf::lock_wait "map_find:$key";
		1188
		1189	$cf::MAP{$key} || do {
		1190	my $guard = cf::lock_acquire "map_find:$key";
		1191
		1192	# do it the slow way
		1193	my $map = try_load_header $path->save_path;
		1194
		1195	if ($map) {
		1196	# safety
		1197	$map->{instantiate_time} = $cf::RUNTIME
		1198	if $map->{instantiate_time} > $cf::RUNTIME;
		1199	} else {
		1200	if (my $rmp = $path->random_map_params) {
		1201	$map = generate_random_map $key, $rmp;
		1202	} else {
		1203	$map = try_load_header $path->load_path;
		1204	}
		1205
		1206	$map or return;
		1207
		1208	$map->{load_original} = 1;
		1209	$map->{instantiate_time} = $cf::RUNTIME;
		1210	$map->instantiate;
		1211
		1212	# per-player maps become, after loading, normal maps
		1213	$map->per_player (0) if $path->{user_rel};
		1214	}
		1215
		1216	$map->path ($key);
		1217	$map->{path} = $path;
		1218	$map->{last_save} = $cf::RUNTIME;
		1219	$map->last_access ($cf::RUNTIME);
		1220
		1221	if ($map->should_reset) {
		1222	$map->reset;
		1223	$map = find_map $path;
		1224	}
		1225
		1226	$cf::MAP{$key} = $map
		1227	}
		1228	}
		1229
		1230	sub load {
		1231	my ($self) = @_;
		1232
		1233	my $path = $self->{path};
		1234	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1235
		1236	return if $self->in_memory != cf::MAP_SWAPPED;
		1237
		1238	$self->in_memory (cf::MAP_LOADING);
		1239
		1240	$self->alloc;
		1241	$self->load_objects ($self->{load_path}, 1)
		1242	or return;
		1243
		1244	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1245	if delete $self->{load_original};
		1246
		1247	if (my $uniq = $path->uniq_path) {
		1248	utf8::encode $uniq;
		1249	if (aio_open $uniq, O_RDONLY, 0) {
		1250	$self->clear_unique_items;
		1251	$self->load_objects ($uniq, 0);
		1252	}
		1253	}
		1254
		1255	# now do the right thing for maps
		1256	$self->link_multipart_objects;
		1257
		1258	if ($self->{path}->is_style_map) {
		1259	$self->{deny_save} = 1;
		1260	$self->{deny_reset} = 1;
		1261	} else {
		1262	$self->fix_auto_apply;
		1263	$self->decay_objects;
		1264	$self->update_buttons;
		1265	$self->set_darkness_map;
		1266	$self->difficulty ($self->estimate_difficulty)
		1267	unless $self->difficulty;
		1268	$self->activate;
		1269	}
		1270
		1271	$self->in_memory (cf::MAP_IN_MEMORY);
		1272	}
		1273
		1274	sub load_map_sync {
		1275	my ($path, $origin) = @_;
		1276
		1277	#warn "load_map_sync<$path, $origin>\n";#d#
		1278
		1279	cf::sync_job {
		1280	my $map = cf::map::find_map $path, $origin
		1281	or return;
		1282	$map->load;
		1283	$map
		1284	}
		1285	}
		1286
		1287	sub save {
		1288	my ($self) = @_;
		1289
		1290	$self->{last_save} = $cf::RUNTIME;
		1291
		1292	return unless $self->dirty;
		1293
		1294	my $save = $self->{path}->save_path; utf8::encode $save;
		1295	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1296
		1297	$self->{load_path} = $save;
		1298
		1299	return if $self->{deny_save};
		1300
		1301	if ($uniq) {
		1302	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1303	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1304	} else {
		1305	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1306	}
		1307	}
		1308
		1309	sub swap_out {
		1310	my ($self) = @_;
		1311
		1312	return if $self->players;
		1313	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1314	return if $self->{deny_save};
		1315
		1316	$self->save;
		1317	$self->clear;
		1318	$self->in_memory (cf::MAP_SWAPPED);
		1319	}
		1320
		1321	sub reset_at {
		1322	my ($self) = @_;
		1323
		1324	# TODO: safety, remove and allow resettable per-player maps
		1325	return 1e99 if $self->{path}{user_rel};
		1326	return 1e99 if $self->{deny_reset};
		1327
		1328	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1329	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1330
		1331	$time + $to
		1332	}
		1333
		1334	sub should_reset {
		1335	my ($self) = @_;
		1336
		1337	$self->reset_at <= $cf::RUNTIME
		1338	}
		1339
		1340	sub unlink_save {
		1341	my ($self) = @_;
		1342
		1343	utf8::encode (my $save = $self->{path}->save_path);
		1344	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1345	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1346	}
		1347
		1348	sub rename {
		1349	my ($self, $new_path) = @_;
		1350
		1351	$self->unlink_save;
		1352
		1353	delete $cf::MAP{$self->path};
		1354	$self->{path} = new cf::path $new_path;
		1355	$self->path ($self->{path}->as_string);
		1356	$cf::MAP{$self->path} = $self;
		1357
		1358	$self->save;
		1359	}
		1360
		1361	sub reset {
		1362	my ($self) = @_;
		1363
		1364	return if $self->players;
		1365	return if $self->{path}{user_rel};#d#
		1366
		1367	warn "resetting map ", $self->path;#d#
		1368
		1369	delete $cf::MAP{$self->path};
		1370
		1371	$_->clear_links_to ($self) for values %cf::MAP;
		1372
		1373	$self->unlink_save;
		1374	$self->destroy;
		1375	}
		1376
		1377	my $nuke_counter = "aaaa";
		1378
		1379	sub nuke {
		1380	my ($self) = @_;
		1381
		1382	$self->{deny_save} = 1;
		1383	$self->reset_timeout (1);
		1384	$self->rename ("{nuke}/" . ($nuke_counter++));
		1385	$self->reset; # polite request, might not happen
		1386	}
		1387
		1388	sub customise_for {
		1389	my ($map, $ob) = @_;
		1390
		1391	if ($map->per_player) {
		1392	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1393	}
		1394
		1395	$map
		1396	}
		1397
		1398	sub emergency_save {
		1399	local $cf::FREEZE = 1;
		1400
		1401	warn "enter emergency map save\n";
		1402
		1403	cf::sync_job {
		1404	warn "begin emergency map save\n";
		1405	$_->save for values %cf::MAP;
		1406	};
		1407
		1408	warn "end emergency map save\n";
		1409	}
		1410
		1411	package cf;
		1412
		1413	=back
		1414
		1415
		1416	=head3 cf::object::player
		1417
		1418	=over 4
		1419
794	=item $player_object->reply ($npc, $msg[, $flags])	1420	=item $player_object->reply ($npc, $msg[, $flags])
795		1421
796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1422	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
797	can be C<undef>. Does the right thing when the player is currently in a	1423	can be C<undef>. Does the right thing when the player is currently in a
798	dialogue with the given NPC character.	1424	dialogue with the given NPC character.
799		1425
800	=cut	1426	=cut
801		1427
802	# rough implementation of a future "reply" method that works	1428	# rough implementation of a future "reply" method that works
803	# with dialog boxes.	1429	# with dialog boxes.
		1430	#TODO: the first argument must go, split into a $npc->reply_to ( method
804	sub cf::object::player::reply($$$;$) {	1431	sub cf::object::player::reply($$$;$) {
805	my ($self, $npc, $msg, $flags) = @_;	1432	my ($self, $npc, $msg, $flags) = @_;
806		1433
807	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1434	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
808		1435
…		…
812	$msg = $npc->name . " says: $msg" if $npc;	1439	$msg = $npc->name . " says: $msg" if $npc;
813	$self->message ($msg, $flags);	1440	$self->message ($msg, $flags);
814	}	1441	}
815	}	1442	}
816		1443
817	=item $player->ext_reply ($msgid, $msgtype, %msg)
818
819	Sends an ext reply to the player.
820
821	=cut
822
823	sub cf::player::ext_reply($$$%) {
824	my ($self, $id, %msg) = @_;
825
826	$msg{msgid} = $id;
827
828	$self->send ("ext " . to_json \%msg);
829	}
830
831	=item $player_object->may ("access")	1444	=item $player_object->may ("access")
832		1445
833	Returns wether the given player is authorized to access resource "access"	1446	Returns wether the given player is authorized to access resource "access"
834	(e.g. "command_wizcast").	1447	(e.g. "command_wizcast").
835		1448
…		…
842	(ref $cf::CFG{"may_$access"}	1455	(ref $cf::CFG{"may_$access"}
843	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1456	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
844	: $cf::CFG{"may_$access"})	1457	: $cf::CFG{"may_$access"})
845	}	1458	}
846		1459
847	=cut	1460	=item $player_object->enter_link
848		1461
849	#############################################################################	1462	Freezes the player and moves him/her to a special map (C<{link}>).
		1463
		1464	The player should be reaosnably safe there for short amounts of time. You
		1465	I<MUST> call C<leave_link> as soon as possible, though.
		1466
		1467	=item $player_object->leave_link ($map, $x, $y)
		1468
		1469	Moves the player out of the specila link map onto the given map. If the
		1470	map is not valid (or omitted), the player will be moved back to the
		1471	location he/she was before the call to C<enter_link>, or, if that fails,
		1472	to the emergency map position.
		1473
		1474	Might block.
		1475
		1476	=cut
		1477
		1478	sub cf::object::player::enter_link {
		1479	my ($self) = @_;
		1480
		1481	$self->deactivate_recursive;
		1482
		1483	return if $self->map == $LINK_MAP;
		1484
		1485	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1486	if $self->map;
		1487
		1488	$self->enter_map ($LINK_MAP, 20, 20);
		1489	}
		1490
		1491	sub cf::object::player::leave_link {
		1492	my ($self, $map, $x, $y) = @_;
		1493
		1494	my $link_pos = delete $self->{_link_pos};
		1495
		1496	unless ($map) {
		1497	# restore original map position
		1498	($map, $x, $y) = @{ $link_pos || [] };
		1499	$map = cf::map::find_map $map;
		1500
		1501	unless ($map) {
		1502	($map, $x, $y) = @$EMERGENCY_POSITION;
		1503	$map = cf::map::find_map $map
		1504	or die "FATAL: cannot load emergency map\n";
		1505	}
		1506	}
		1507
		1508	($x, $y) = (-1, -1)
		1509	unless (defined $x) && (defined $y);
		1510
		1511	# use -1 or undef as default coordinates, not 0, 0
		1512	($x, $y) = ($map->enter_x, $map->enter_y)
		1513	if $x <=0 && $y <= 0;
		1514
		1515	$map->load;
		1516
		1517	$self->activate_recursive;
		1518	$self->enter_map ($map, $x, $y);
		1519	}
		1520
		1521	cf::player->attach (
		1522	on_logout => sub {
		1523	my ($pl) = @_;
		1524
		1525	# abort map switching before logout
		1526	if ($pl->ob->{_link_pos}) {
		1527	cf::sync_job {
		1528	$pl->ob->leave_link
		1529	};
		1530	}
		1531	},
		1532	on_login => sub {
		1533	my ($pl) = @_;
		1534
		1535	# try to abort aborted map switching on player login :)
		1536	# should happen only on crashes
		1537	if ($pl->ob->{_link_pos}) {
		1538	$pl->ob->enter_link;
		1539	Coro::async {
		1540	# we need this sleep as the login has a concurrent enter_exit running
		1541	# and this sleep increases chances of the player not ending up in scorn
		1542	Coro::Timer::sleep 1;
		1543	$pl->ob->leave_link;
		1544	};
		1545	}
		1546	},
		1547	);
		1548
		1549	=item $player_object->goto_map ($path, $x, $y)
		1550
		1551	=cut
		1552
		1553	sub cf::object::player::goto_map {
		1554	my ($self, $path, $x, $y) = @_;
		1555
		1556	$self->enter_link;
		1557
		1558	(Coro::async {
		1559	$path = new cf::path $path;
		1560
		1561	my $map = cf::map::find_map $path->as_string;
		1562	$map = $map->customise_for ($self) if $map;
		1563
		1564	# warn "entering ", $map->path, " at ($x, $y)\n"
		1565	# if $map;
		1566
		1567	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1568
		1569	$self->leave_link ($map, $x, $y);
		1570	})->prio (1);
		1571	}
		1572
		1573	=item $player_object->enter_exit ($exit_object)
		1574
		1575	=cut
		1576
		1577	sub parse_random_map_params {
		1578	my ($spec) = @_;
		1579
		1580	my $rmp = { # defaults
		1581	xsize => 10,
		1582	ysize => 10,
		1583	};
		1584
		1585	for (split /\n/, $spec) {
		1586	my ($k, $v) = split /\s+/, $_, 2;
		1587
		1588	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1589	}
		1590
		1591	$rmp
		1592	}
		1593
		1594	sub prepare_random_map {
		1595	my ($exit) = @_;
		1596
		1597	# all this does is basically replace the /! path by
		1598	# a new random map path (?random/...) with a seed
		1599	# that depends on the exit object
		1600
		1601	my $rmp = parse_random_map_params $exit->msg;
		1602
		1603	if ($exit->map) {
		1604	$rmp->{region} = $exit->map->region_name;
		1605	$rmp->{origin_map} = $exit->map->path;
		1606	$rmp->{origin_x} = $exit->x;
		1607	$rmp->{origin_y} = $exit->y;
		1608	}
		1609
		1610	$rmp->{random_seed} ||= $exit->random_seed;
		1611
		1612	my $data = cf::to_json $rmp;
		1613	my $md5 = Digest::MD5::md5_hex $data;
		1614
		1615	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1616	aio_write $fh, 0, (length $data), $data, 0;
		1617
		1618	$exit->slaying ("?random/$md5");
		1619	$exit->msg (undef);
		1620	}
		1621	}
		1622
		1623	sub cf::object::player::enter_exit {
		1624	my ($self, $exit) = @_;
		1625
		1626	return unless $self->type == cf::PLAYER;
		1627
		1628	$self->enter_link;
		1629
		1630	(Coro::async {
		1631	unless (eval {
		1632
		1633	prepare_random_map $exit
		1634	if $exit->slaying eq "/!";
		1635
		1636	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1637	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1638
		1639	1;
		1640	}) {
		1641	$self->message ("Something went wrong deep within the crossfire server. "
		1642	. "I'll try to bring you back to the map you were before. "
		1643	. "Please report this to the dungeon master",
		1644	cf::NDI_UNIQUE | cf::NDI_RED);
		1645
		1646	warn "ERROR in enter_exit: $@";
		1647	$self->leave_link;
		1648	}
		1649	})->prio (1);
		1650	}
		1651
		1652	=head3 cf::client
		1653
		1654	=over 4
		1655
		1656	=item $client->send_drawinfo ($text, $flags)
		1657
		1658	Sends a drawinfo packet to the client. Circumvents output buffering so
		1659	should not be used under normal circumstances.
		1660
		1661	=cut
		1662
		1663	sub cf::client::send_drawinfo {
		1664	my ($self, $text, $flags) = @_;
		1665
		1666	utf8::encode $text;
		1667	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1668	}
		1669
		1670
		1671	=item $success = $client->query ($flags, "text", \&cb)
		1672
		1673	Queues a query to the client, calling the given callback with
		1674	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1675	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1676
		1677	Queries can fail, so check the return code. Or don't, as queries will become
		1678	reliable at some point in the future.
		1679
		1680	=cut
		1681
		1682	sub cf::client::query {
		1683	my ($self, $flags, $text, $cb) = @_;
		1684
		1685	return unless $self->state == ST_PLAYING
		1686	|| $self->state == ST_SETUP
		1687	|| $self->state == ST_CUSTOM;
		1688
		1689	$self->state (ST_CUSTOM);
		1690
		1691	utf8::encode $text;
		1692	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1693
		1694	$self->send_packet ($self->{query_queue}[0][0])
		1695	if @{ $self->{query_queue} } == 1;
		1696	}
		1697
		1698	cf::client->attach (
		1699	on_reply => sub {
		1700	my ($ns, $msg) = @_;
		1701
		1702	# this weird shuffling is so that direct followup queries
		1703	# get handled first
		1704	my $queue = delete $ns->{query_queue};
		1705
		1706	(shift @$queue)->[1]->($msg);
		1707
		1708	push @{ $ns->{query_queue} }, @$queue;
		1709
		1710	if (@{ $ns->{query_queue} } == @$queue) {
		1711	if (@$queue) {
		1712	$ns->send_packet ($ns->{query_queue}[0][0]);
		1713	} else {
		1714	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1715	}
		1716	}
		1717	},
		1718	);
		1719
		1720	=item $client->coro (\&cb)
		1721
		1722	Create a new coroutine, running the specified callback. The coroutine will
		1723	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1724	or loss of connection).
		1725
		1726	=cut
		1727
		1728	sub cf::client::coro {
		1729	my ($self, $cb) = @_;
		1730
		1731	my $coro; $coro = async {
		1732	eval {
		1733	$cb->();
		1734	};
		1735	warn $@ if $@;
		1736	};
		1737
		1738	$coro->on_destroy (sub {
		1739	delete $self->{_coro}{$coro+0};
		1740	});
		1741
		1742	$self->{_coro}{$coro+0} = $coro;
		1743
		1744	$coro
		1745	}
		1746
		1747	cf::client->attach (
		1748	on_destroy => sub {
		1749	my ($ns) = @_;
		1750
		1751	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1752	},
		1753	);
		1754
		1755	=back
		1756
850		1757
851	=head2 SAFE SCRIPTING	1758	=head2 SAFE SCRIPTING
852		1759
853	Functions that provide a safe environment to compile and execute	1760	Functions that provide a safe environment to compile and execute
854	snippets of perl code without them endangering the safety of the server	1761	snippets of perl code without them endangering the safety of the server
…		…
869		1776
870	=pod	1777	=pod
871		1778
872	The following fucntions and emthods are available within a safe environment:	1779	The following fucntions and emthods are available within a safe environment:
873		1780
874	cf::object contr pay_amount pay_player	1781	cf::object contr pay_amount pay_player map
875	cf::object::player player	1782	cf::object::player player
876	cf::player peaceful	1783	cf::player peaceful
		1784	cf::map trigger
877		1785
878	=cut	1786	=cut
879		1787
880	for (	1788	for (
881	["cf::object" => qw(contr pay_amount pay_player)],	1789	["cf::object" => qw(contr pay_amount pay_player map)],
882	["cf::object::player" => qw(player)],	1790	["cf::object::player" => qw(player)],
883	["cf::player" => qw(peaceful)],	1791	["cf::player" => qw(peaceful)],
		1792	["cf::map" => qw(trigger)],
884	) {	1793	) {
885	no strict 'refs';	1794	no strict 'refs';
886	my ($pkg, @funs) = @$_;	1795	my ($pkg, @funs) = @$_;
887	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1796	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
888	for @funs;	1797	for @funs;
…		…
1004		1913
1005	{	1914	{
1006	my $path = cf::localdir . "/database.pst";	1915	my $path = cf::localdir . "/database.pst";
1007		1916
1008	sub db_load() {	1917	sub db_load() {
1009	warn "loading database $path\n";#d# remove later
1010	$DB = stat $path ? Storable::retrieve $path : { };	1918	$DB = stat $path ? Storable::retrieve $path : { };
1011	}	1919	}
1012		1920
1013	my $pid;	1921	my $pid;
1014		1922
1015	sub db_save() {	1923	sub db_save() {
1016	warn "saving database $path\n";#d# remove later
1017	waitpid $pid, 0 if $pid;	1924	waitpid $pid, 0 if $pid;
1018	if (0 == ($pid = fork)) {	1925	if (0 == ($pid = fork)) {
1019	$DB->{_meta}{version} = 1;	1926	$DB->{_meta}{version} = 1;
1020	Storable::nstore $DB, "$path~";	1927	Storable::nstore $DB, "$path~";
1021	rename "$path~", $path;	1928	rename "$path~", $path;
…		…
1028	sub db_sync() {	1935	sub db_sync() {
1029	db_save if $dirty;	1936	db_save if $dirty;
1030	undef $dirty;	1937	undef $dirty;
1031	}	1938	}
1032		1939
1033	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	1940	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1034	db_sync;	1941	db_sync;
1035	});	1942	});
1036		1943
1037	sub db_dirty() {	1944	sub db_dirty() {
1038	$dirty = 1;	1945	$dirty = 1;
…		…
1052	$DB->{$_[0]} = $_[1];	1959	$DB->{$_[0]} = $_[1];
1053	}	1960	}
1054	db_dirty;	1961	db_dirty;
1055	}	1962	}
1056		1963
1057	attach_global	1964	cf::global->attach (
1058	prio => 10000,	1965	prio => 10000,
1059	on_cleanup => sub {	1966	on_cleanup => sub {
1060	db_sync;	1967	db_sync;
1061	},	1968	},
1062	;	1969	);
1063	}	1970	}
1064		1971
1065	#############################################################################	1972	#############################################################################
1066	# the server's main()	1973	# the server's main()
1067		1974
…		…
1072	local $/;	1979	local $/;
1073	*CFG = YAML::Syck::Load <$fh>;	1980	*CFG = YAML::Syck::Load <$fh>;
1074	}	1981	}
1075		1982
1076	sub main {	1983	sub main {
		1984	# we must not ever block the main coroutine
		1985	local $Coro::idle = sub {
		1986	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		1987	(Coro::unblock_sub {
		1988	Event::one_event;
		1989	})->();
		1990	};
		1991
1077	cfg_load;	1992	cfg_load;
1078	db_load;	1993	db_load;
1079	load_extensions;	1994	load_extensions;
1080	Event::loop;	1995	Event::loop;
1081	}	1996	}
1082		1997
1083	#############################################################################	1998	#############################################################################
1084	# initialisation	1999	# initialisation
1085		2000
1086	sub _perl_reload(&) {	2001	sub reload() {
1087	my ($msg) = @_;	2002	# can/must only be called in main
		2003	if ($Coro::current != $Coro::main) {
		2004	warn "can only reload from main coroutine\n";
		2005	return;
		2006	}
1088		2007
1089	$msg->("reloading...");	2008	warn "reloading...";
		2009
		2010	local $FREEZE = 1;
		2011	cf::emergency_save;
1090		2012
1091	eval {	2013	eval {
		2014	# if anything goes wrong in here, we should simply crash as we already saved
		2015
1092	# cancel all watchers	2016	# cancel all watchers
1093	$_->cancel for Event::all_watchers;	2017	for (Event::all_watchers) {
		2018	$_->cancel if $_->data & WF_AUTOCANCEL;
		2019	}
		2020
		2021	# cancel all extension coros
		2022	$_->cancel for values %EXT_CORO;
		2023	%EXT_CORO = ();
1094		2024
1095	# unload all extensions	2025	# unload all extensions
1096	for (@exts) {	2026	for (@exts) {
1097	$msg->("unloading <$_>");	2027	warn "unloading <$_>";
1098	unload_extension $_;	2028	unload_extension $_;
1099	}	2029	}
1100		2030
1101	# unload all modules loaded from $LIBDIR	2031	# unload all modules loaded from $LIBDIR
1102	while (my ($k, $v) = each %INC) {	2032	while (my ($k, $v) = each %INC) {
1103	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2033	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1104		2034
1105	$msg->("removing <$k>");	2035	warn "removing <$k>";
1106	delete $INC{$k};	2036	delete $INC{$k};
1107		2037
1108	$k =~ s/\.pm$//;	2038	$k =~ s/\.pm$//;
1109	$k =~ s/\//::/g;	2039	$k =~ s/\//::/g;
1110		2040
…		…
1115	Symbol::delete_package $k;	2045	Symbol::delete_package $k;
1116	}	2046	}
1117		2047
1118	# sync database to disk	2048	# sync database to disk
1119	cf::db_sync;	2049	cf::db_sync;
		2050	IO::AIO::flush;
1120		2051
1121	# get rid of safe::, as good as possible	2052	# get rid of safe::, as good as possible
1122	Symbol::delete_package "safe::$_"	2053	Symbol::delete_package "safe::$_"
1123	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2054	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1124		2055
1125	# remove register_script_function callbacks	2056	# remove register_script_function callbacks
1126	# TODO	2057	# TODO
1127		2058
1128	# unload cf.pm "a bit"	2059	# unload cf.pm "a bit"
…		…
1131	# don't, removes xs symbols, too,	2062	# don't, removes xs symbols, too,
1132	# and global variables created in xs	2063	# and global variables created in xs
1133	#Symbol::delete_package __PACKAGE__;	2064	#Symbol::delete_package __PACKAGE__;
1134		2065
1135	# reload cf.pm	2066	# reload cf.pm
1136	$msg->("reloading cf.pm");	2067	warn "reloading cf.pm";
1137	require cf;	2068	require cf;
		2069	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1138		2070
1139	# load config and database again	2071	# load config and database again
1140	cf::cfg_load;	2072	cf::cfg_load;
1141	cf::db_load;	2073	cf::db_load;
1142		2074
1143	# load extensions	2075	# load extensions
1144	$msg->("load extensions");	2076	warn "load extensions";
1145	cf::load_extensions;	2077	cf::load_extensions;
1146		2078
1147	# reattach attachments to objects	2079	# reattach attachments to objects
1148	$msg->("reattach");	2080	warn "reattach";
1149	_global_reattach;	2081	_global_reattach;
1150	};	2082	};
1151	$msg->($@) if $@;
1152		2083
1153	$msg->("reloaded");	2084	if ($@) {
		2085	warn $@;
		2086	warn "error while reloading, exiting.";
		2087	exit 1;
		2088	}
		2089
		2090	warn "reloaded successfully";
1154	};	2091	};
1155		2092
1156	sub perl_reload() {	2093	#############################################################################
1157	_perl_reload {
1158	warn $_[0];
1159	print "$_[0]\n";
1160	};
1161	}
1162		2094
		2095	unless ($LINK_MAP) {
		2096	$LINK_MAP = cf::map::new;
		2097
		2098	$LINK_MAP->width (41);
		2099	$LINK_MAP->height (41);
		2100	$LINK_MAP->alloc;
		2101	$LINK_MAP->path ("{link}");
		2102	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2103	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2104
		2105	# dirty hack because... archetypes are not yet loaded
		2106	Event->timer (
		2107	after => 2,
		2108	cb => sub {
		2109	$_[0]->w->cancel;
		2110
		2111	# provide some exits "home"
		2112	my $exit = cf::object::new "exit";
		2113
		2114	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2115	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2116	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2117
		2118	$LINK_MAP->insert ($exit->clone, 19, 19);
		2119	$LINK_MAP->insert ($exit->clone, 19, 20);
		2120	$LINK_MAP->insert ($exit->clone, 19, 21);
		2121	$LINK_MAP->insert ($exit->clone, 20, 19);
		2122	$LINK_MAP->insert ($exit->clone, 20, 21);
		2123	$LINK_MAP->insert ($exit->clone, 21, 19);
		2124	$LINK_MAP->insert ($exit->clone, 21, 20);
		2125	$LINK_MAP->insert ($exit->clone, 21, 21);
		2126
		2127	$exit->destroy;
		2128	});
		2129
		2130	$LINK_MAP->{deny_save} = 1;
		2131	$LINK_MAP->{deny_reset} = 1;
		2132
		2133	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2134	}
		2135
		2136	register "<global>", __PACKAGE__;
		2137
1163	register_command "perl-reload", 0, sub {	2138	register_command "reload" => sub {
1164	my ($who, $arg) = @_;	2139	my ($who, $arg) = @_;
1165		2140
1166	if ($who->flag (FLAG_WIZ)) {	2141	if ($who->flag (FLAG_WIZ)) {
1167	_perl_reload {	2142	$who->message ("start of reload.");
1168	warn $_[0];	2143	reload;
1169	$who->message ($_[0]);	2144	$who->message ("end of reload.");
1170	};
1171	}	2145	}
1172	};	2146	};
1173		2147
1174	register "<global>", __PACKAGE__;
1175
1176	unshift @INC, $LIBDIR;	2148	unshift @INC, $LIBDIR;
1177		2149
1178	$TICK_WATCHER = Event->timer (	2150	$TICK_WATCHER = Event->timer (
		2151	reentrant => 0,
1179	prio => 1,	2152	prio => 0,
1180	async => 1,
1181	at => $NEXT_TICK || 1,	2153	at => $NEXT_TICK || $TICK,
		2154	data => WF_AUTOCANCEL,
1182	cb => sub {	2155	cb => sub {
		2156	unless ($FREEZE) {
1183	cf::server_tick; # one server iteration	2157	cf::server_tick; # one server iteration
		2158	$RUNTIME += $TICK;
		2159	}
1184		2160
1185	my $NOW = Event::time;
1186	$NEXT_TICK += $TICK;	2161	$NEXT_TICK += $TICK;
1187		2162
1188	# if we are delayed by four ticks or more, skip them all	2163	# if we are delayed by four ticks or more, skip them all
1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2164	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1190		2165
1191	$TICK_WATCHER->at ($NEXT_TICK);	2166	$TICK_WATCHER->at ($NEXT_TICK);
1192	$TICK_WATCHER->start;	2167	$TICK_WATCHER->start;
1193	},	2168	},
1194	);	2169	);
1195		2170
1196	IO::AIO::max_poll_time $TICK * 0.2;	2171	IO::AIO::max_poll_time $TICK * 0.2;
1197		2172
		2173	Event->io (
1198	Event->io (fd => IO::AIO::poll_fileno,	2174	fd => IO::AIO::poll_fileno,
1199	poll => 'r',	2175	poll => 'r',
1200	prio => 5,	2176	prio => 5,
		2177	data => WF_AUTOCANCEL,
1201	cb => \&IO::AIO::poll_cb);	2178	cb => \&IO::AIO::poll_cb,
		2179	);
		2180
		2181	Event->timer (
		2182	data => WF_AUTOCANCEL,
		2183	after => 0,
		2184	interval => 10,
		2185	cb => sub {
		2186	(Coro::unblock_sub {
		2187	write_runtime
		2188	or warn "ERROR: unable to write runtime file: $!";
		2189	})->();
		2190	},
		2191	);
1202		2192
1203	1	2193	1
1204		2194

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