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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.70 by root, Sun Oct 1 10:55:37 2006 UTC vs.
Revision 1.127 by root, Wed Jan 3 00:05:26 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 (2); # 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 %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $FREEZE;
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO;
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76
		77	our $EMERGENCY_POSITION = $cf::CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		78
28	#############################################################################	79	#############################################################################
29		80
30	=head2 GLOBAL VARIABLES	81	=head2 GLOBAL VARIABLES
31		82
32	=over 4	83	=over 4
		84
		85	=item $cf::UPTIME
		86
		87	The timestamp of the server start (so not actually an uptime).
		88
		89	=item $cf::RUNTIME
		90
		91	The time this server has run, starts at 0 and is increased by $cf::TICK on
		92	every server tick.
33		93
34	=item $cf::LIBDIR	94	=item $cf::LIBDIR
35		95
36	The perl library directory, where extensions and cf-specific modules can	96	The perl library directory, where extensions and cf-specific modules can
37	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.
38		102
39	=item $cf::TICK	103	=item $cf::TICK
40		104
41	The interval between server ticks, in seconds.	105	The interval between server ticks, in seconds.
42		106
…		…
50	=cut	114	=cut
51		115
52	BEGIN {	116	BEGIN {
53	*CORE::GLOBAL::warn = sub {	117	*CORE::GLOBAL::warn = sub {
54	my $msg = join "", @_;	118	my $msg = join "", @_;
		119	utf8::encode $msg;
		120
55	$msg .= "\n"	121	$msg .= "\n"
56	unless $msg =~ /\n$/;	122	unless $msg =~ /\n$/;
57		123
58	print STDERR "cfperl: $msg";
59	LOG llevError, "cfperl: $msg";	124	LOG llevError, "cfperl: $msg";
60	};	125	};
61	}	126	}
62		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';
63	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	133	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
64		134
65	# 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
66	# within the Safe compartment.	136	# 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)) {	137	for my $pkg (qw(
		138	cf::global cf::attachable
		139	cf::object cf::object::player
		140	cf::client cf::player
		141	cf::arch cf::living
		142	cf::map cf::party cf::region
		143	)) {
68	no strict 'refs';	144	no strict 'refs';
69	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	145	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
70	}	146	}
71		147
72	$Event::DIED = sub {	148	$Event::DIED = sub {
…		…
74	};	150	};
75		151
76	my %ext_pkg;	152	my %ext_pkg;
77	my @exts;	153	my @exts;
78	my @hook;	154	my @hook;
79	my %command;
80	my %extcmd;
81		155
82	=head2 UTILITY FUNCTIONS	156	=head2 UTILITY FUNCTIONS
83		157
84	=over 4	158	=over 4
85		159
…		…
107	sub to_json($) {	181	sub to_json($) {
108	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	182	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
109	JSON::Syck::Dump $_[0]	183	JSON::Syck::Dump $_[0]
110	}	184	}
111		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::async { BLOCK }
		251
		252	Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
		253	error instead of exiting the server in case of a problem.
		254
		255	=cut
		256
		257	sub async(&) {
		258	my ($cb) = @_;
		259
		260	Coro::async {
		261	eval { $cb->() };
		262	warn $@ if $@;
		263	}
		264	}
		265
		266	=item cf::sync_job { BLOCK }
		267
		268	The design of crossfire+ requires that the main coro ($Coro::main) is
		269	always able to handle events or runnable, as crossfire+ is only partly
		270	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		271
		272	If it must be done, put the blocking parts into C<sync_job>. This will run
		273	the given BLOCK in another coroutine while waiting for the result. The
		274	server will be frozen during this time, so the block should either finish
		275	fast or be very important.
		276
		277	=cut
		278
		279	sub sync_job(&) {
		280	my ($job) = @_;
		281
		282	if ($Coro::current == $Coro::main) {
		283	# this is the main coro, too bad, we have to block
		284	# till the operation succeeds, freezing the server :/
		285
		286	# TODO: use suspend/resume instead
		287	# (but this is cancel-safe)
		288	local $FREEZE = 1;
		289
		290	my $busy = 1;
		291	my @res;
		292
		293	(Coro::async {
		294	@res = eval { $job->() };
		295	warn $@ if $@;
		296	undef $busy;
		297	})->prio (Coro::PRIO_MAX);
		298
		299	while ($busy) {
		300	Coro::cede_notself;
		301	Event::one_event unless Coro::nready;
		302	}
		303
		304	wantarray ? @res : $res[0]
		305	} else {
		306	# we are in another coroutine, how wonderful, everything just works
		307
		308	$job->()
		309	}
		310	}
		311
		312	=item $coro = cf::coro { BLOCK }
		313
		314	Creates and returns a new coro. This coro is automcatially being canceled
		315	when the extension calling this is being unloaded.
		316
		317	=cut
		318
		319	sub coro(&) {
		320	my $cb = shift;
		321
		322	my $coro = &cf::async ($cb);
		323
		324	$coro->on_destroy (sub {
		325	delete $EXT_CORO{$coro+0};
		326	});
		327	$EXT_CORO{$coro+0} = $coro;
		328
		329	$coro
		330	}
		331
		332	sub write_runtime {
		333	my $runtime = cf::localdir . "/runtime";
		334
		335	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		336	or return;
		337
		338	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		339	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		340	and return;
		341
		342	aio_fsync $fh
		343	and return;
		344
		345	close $fh
		346	or return;
		347
		348	aio_rename "$runtime~", $runtime
		349	and return;
		350
		351	1
		352	}
		353
112	=back	354	=back
113		355
		356	=cut
		357
114	#############################################################################	358	#############################################################################
115		359
116	=head2 EVENTS AND OBJECT ATTACHMENTS	360	package cf::path;
		361
		362	sub new {
		363	my ($class, $path, $base) = @_;
		364
		365	$path = $path->as_string if ref $path;
		366
		367	my $self = bless { }, $class;
		368
		369	# {... are special paths that are not touched
		370	# ?xxx/... are special absolute paths
		371	# ?random/... random maps
		372	# /! non-realised random map exit
		373	# /... normal maps
		374	# ~/... per-player maps without a specific player (DO NOT USE)
		375	# ~user/... per-player map of a specific user
		376
		377	if ($path =~ /^{/) {
		378	# fine as it is
		379	} elsif ($path =~ s{^\?random/}{}) {
		380	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		381	$self->{random} = cf::from_json $data;
		382	} else {
		383	if ($path =~ s{^~([^/]+)?}{}) {
		384	$self->{user_rel} = 1;
		385
		386	if (defined $1) {
		387	$self->{user} = $1;
		388	} elsif ($base =~ m{^~([^/]+)/}) {
		389	$self->{user} = $1;
		390	} else {
		391	warn "cannot resolve user-relative path without user <$path,$base>\n";
		392	}
		393	} elsif ($path =~ /^\//) {
		394	# already absolute
		395	} else {
		396	$base =~ s{[^/]+/?$}{};
		397	return $class->new ("$base/$path");
		398	}
		399
		400	for ($path) {
		401	redo if s{/\.?/}{/};
		402	redo if s{/[^/]+/\.\./}{/};
		403	}
		404	}
		405
		406	$self->{path} = $path;
		407
		408	$self
		409	}
		410
		411	# the name / primary key / in-game path
		412	sub as_string {
		413	my ($self) = @_;
		414
		415	$self->{user_rel} ? "~$self->{user}$self->{path}"
		416	: $self->{random} ? "?random/$self->{path}"
		417	: $self->{path}
		418	}
		419
		420	# the displayed name, this is a one way mapping
		421	sub visible_name {
		422	my ($self) = @_;
		423
		424	# if (my $rmp = $self->{random}) {
		425	# # todo: be more intelligent about this
		426	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		427	# } else {
		428	$self->as_string
		429	# }
		430	}
		431
		432	# escape the /'s in the path
		433	sub _escaped_path {
		434	# ∕ is U+2215
		435	(my $path = $_[0]{path}) =~ s/\//∕/g;
		436	$path
		437	}
		438
		439	# the original (read-only) location
		440	sub load_path {
		441	my ($self) = @_;
		442
		443	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		444	}
		445
		446	# the temporary/swap location
		447	sub save_path {
		448	my ($self) = @_;
		449
		450	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		451	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		452	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		453	}
		454
		455	# the unique path, might be eq to save_path
		456	sub uniq_path {
		457	my ($self) = @_;
		458
		459	$self->{user_rel} || $self->{random}
		460	? undef
		461	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		462	}
		463
		464	# return random map parameters, or undef
		465	sub random_map_params {
		466	my ($self) = @_;
		467
		468	$self->{random}
		469	}
		470
		471	# this is somewhat ugly, but style maps do need special treatment
		472	sub is_style_map {
		473	$_[0]{path} =~ m{^/styles/}
		474	}
		475
		476	package cf;
		477
		478	#############################################################################
		479
		480	=head2 ATTACHABLE OBJECTS
		481
		482	Many objects in crossfire are so-called attachable objects. That means you can
		483	attach callbacks/event handlers (a collection of which is called an "attachment")
		484	to it. All such attachable objects support the following methods.
		485
		486	In the following description, CLASS can be any of C<global>, C<object>
		487	C<player>, C<client> or C<map> (i.e. the attachable objects in
		488	crossfire+).
117		489
118	=over 4	490	=over 4
119		491
120	=item $object->attach ($attachment, key => $value...)
121
122	=item $object->detach ($attachment)
123
124	Attach/detach a pre-registered attachment to an object.
125
126	=item $player->attach ($attachment, key => $value...)
127
128	=item $player->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to a player.
131
132	=item $map->attach ($attachment, key => $value...)	492	=item $attachable->attach ($attachment, key => $value...)
133		493
134	=item $map->detach ($attachment)	494	=item $attachable->detach ($attachment)
135		495
136	Attach/detach a pre-registered attachment to a map.	496	Attach/detach a pre-registered attachment to a specific object and give it
		497	the specified key/value pairs as arguments.
137		498
138	=item $bool = $object->attached ($name)	499	Example, attach a minesweeper attachment to the given object, making it a
		500	10x10 minesweeper game:
139		501
140	=item $bool = $player->attached ($name)	502	$obj->attach (minesweeper => width => 10, height => 10);
141		503
142	=item $bool = $map->attached ($name)	504	=item $bool = $attachable->attached ($name)
143		505
144	Checks wether the named attachment is currently attached to the object.	506	Checks wether the named attachment is currently attached to the object.
145		507
146	=item cf::attach_global ...	508	=item cf::CLASS->attach ...
147		509
148	Attach handlers for global events.	510	=item cf::CLASS->detach ...
149		511
150	This and all following C<attach_*>-functions expect any number of the	512	Define an anonymous attachment and attach it to all objects of the given
151	following handler/hook descriptions:	513	CLASS. See the next function for an explanation of its arguments.
		514
		515	You can attach to global events by using the C<cf::global> class.
		516
		517	Example, log all player logins:
		518
		519	cf::player->attach (
		520	on_login => sub {
		521	my ($pl) = @_;
		522	...
		523	},
		524	);
		525
		526	Example, attach to the jeweler skill:
		527
		528	cf::object->attach (
		529	type => cf::SKILL,
		530	subtype => cf::SK_JEWELER,
		531	on_use_skill => sub {
		532	my ($sk, $ob, $part, $dir, $msg) = @_;
		533	...
		534	},
		535	);
		536
		537	=item cf::CLASS::attachment $name, ...
		538
		539	Register an attachment by C<$name> through which attachable objects of the
		540	given CLASS can refer to this attachment.
		541
		542	Some classes such as crossfire maps and objects can specify attachments
		543	that are attached at load/instantiate time, thus the need for a name.
		544
		545	These calls expect any number of the following handler/hook descriptions:
152		546
153	=over 4	547	=over 4
154		548
155	=item prio => $number	549	=item prio => $number
156		550
…		…
158	by another C<prio> setting). Lower priority handlers get executed	552	by another C<prio> setting). Lower priority handlers get executed
159	earlier. The default priority is C<0>, and many built-in handlers are	553	earlier. The default priority is C<0>, and many built-in handlers are
160	registered at priority C<-1000>, so lower priorities should not be used	554	registered at priority C<-1000>, so lower priorities should not be used
161	unless you know what you are doing.	555	unless you know what you are doing.
162		556
		557	=item type => $type
		558
		559	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		560	given type of objects only (the additional parameter C<subtype> can be
		561	used to further limit to the given subtype).
		562
163	=item on_I<event> => \&cb	563	=item on_I<event> => \&cb
164		564
165	Call the given code reference whenever the named event happens (event is	565	Call the given code reference whenever the named event happens (event is
166	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	566	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
167	handlers are recognised generally depends on the type of object these	567	handlers are recognised generally depends on the type of object these
…		…
176	package and register them. Only handlers for eevents supported by the	576	package and register them. Only handlers for eevents supported by the
177	object/class are recognised.	577	object/class are recognised.
178		578
179	=back	579	=back
180		580
181	=item cf::attach_to_type $object_type, $subtype, ...	581	Example, define an attachment called "sockpuppet" that calls the given
		582	event handler when a monster attacks:
182		583
183	Attach handlers for a specific object type (e.g. TRANSPORT) and	584	cf::object::attachment sockpuppet =>
184	subtype. If C<$subtype> is zero or undef, matches all objects of the given	585	on_skill_attack => sub {
185	type.	586	my ($self, $victim) = @_;
186		587	...
187	=item cf::attach_to_objects ...
188
189	Attach handlers to all objects. Do not use this except for debugging or
190	very rare events, as handlers are (obviously) called for I<all> objects in
191	the game.
192
193	=item cf::attach_to_players ...
194
195	Attach handlers to all players.
196
197	=item cf::attach_to_maps ...
198
199	Attach handlers to all maps.
200
201	=item cf:register_attachment $name, ...
202
203	Register an attachment by name through which objects can refer to this
204	attachment.
205
206	=item cf:register_player_attachment $name, ...
207
208	Register an attachment by name through which players can refer to this
209	attachment.
210
211	=item cf:register_map_attachment $name, ...
212
213	Register an attachment by name through which maps can refer to this
214	attachment.
215
216	=cut
217
218	# the following variables are defined in .xs and must not be re-created
219	our @CB_GLOBAL = (); # registry for all global events
220	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
221	our @CB_PLAYER = ();
222	our @CB_TYPE = (); # registry for type (cf-object class) based events
223	our @CB_MAP = ();
224
225	my %attachment;
226
227	sub _attach_cb($\%$$$) {
228	my ($registry, $undo, $event, $prio, $cb) = @_;
229
230	use sort 'stable';
231
232	$cb = [$prio, $cb];
233
234	@{$registry->[$event]} = sort
235	{ $a->[0] cmp $b->[0] }
236	@{$registry->[$event] || []}, $cb;
237
238	push @{$undo->{cb}}, [$event, $cb];
239	}
240
241	# attach handles attaching event callbacks
242	# the only thing the caller has to do is pass the correct
243	# registry (== where the callback attaches to).
244	sub _attach(\@$@) {
245	my ($registry, $klass, @arg) = @_;
246
247	my $prio = 0;
248
249	my %undo = (
250	registry => $registry,
251	cb => [],
252	);
253
254	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
255
256	while (@arg) {
257	my $type = shift @arg;
258
259	if ($type eq "prio") {
260	$prio = shift @arg;
261
262	} elsif ($type eq "package") {
263	my $pkg = shift @arg;
264
265	while (my ($name, $id) = each %cb_id) {
266	if (my $cb = $pkg->can ($name)) {
267	_attach_cb $registry, %undo, $id, $prio, $cb;
268	}
269	}	588	}
270
271	} elsif (exists $cb_id{$type}) {
272	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
273
274	} elsif (ref $type) {
275	warn "attaching objects not supported, ignoring.\n";
276
277	} else {
278	shift @arg;
279	warn "attach argument '$type' not supported, ignoring.\n";
280	}
281	}
282
283	\%undo
284	}
285
286	sub _attach_attachment {
287	my ($obj, $name, %arg) = @_;
288
289	return if exists $obj->{_attachment}{$name};
290
291	my $res;
292
293	if (my $attach = $attachment{$name}) {
294	my $registry = $obj->registry;
295
296	for (@$attach) {
297	my ($klass, @attach) = @$_;
298	$res = _attach @$registry, $klass, @attach;
299	}
300
301	$obj->{$name} = \%arg;
302	} else {
303	warn "object uses attachment '$name' that is not available, postponing.\n";
304	}
305
306	$obj->{_attachment}{$name} = undef;
307
308	$res->{attachment} = $name;
309	$res
310	}
311
312	*cf::object::attach =
313	*cf::player::attach =
314	*cf::map::attach = sub {
315	my ($obj, $name, %arg) = @_;
316
317	_attach_attachment $obj, $name, %arg;
318	};
319
320	# all those should be optimised
321	*cf::object::detach =
322	*cf::player::detach =
323	*cf::map::detach = sub {
324	my ($obj, $name) = @_;
325
326	delete $obj->{_attachment}{$name};
327	reattach ($obj);
328	};
329
330	*cf::object::attached =
331	*cf::player::attached =
332	*cf::map::attached = sub {
333	my ($obj, $name) = @_;
334
335	exists $obj->{_attachment}{$name}
336	};
337
338	sub attach_global {
339	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
340	}
341
342	sub attach_to_type {
343	my $type = shift;
344	my $subtype = shift;
345
346	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
347	}
348
349	sub attach_to_objects {
350	_attach @CB_OBJECT, KLASS_OBJECT, @_
351	}
352
353	sub attach_to_players {
354	_attach @CB_PLAYER, KLASS_PLAYER, @_
355	}
356
357	sub attach_to_maps {
358	_attach @CB_MAP, KLASS_MAP, @_
359	}
360
361	sub register_attachment {
362	my $name = shift;
363
364	$attachment{$name} = [[KLASS_OBJECT, @_]];
365	}
366
367	sub register_player_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_PLAYER, @_]];
371	}
372
373	sub register_map_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_MAP, @_]];
377	}
378
379	our $override;
380	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
381
382	sub override {
383	$override = 1;
384	@invoke_results = ();
385	}
386
387	sub do_invoke {
388	my $event = shift;
389	my $callbacks = shift;
390
391	@invoke_results = ();
392
393	local $override;
394
395	for (@$callbacks) {
396	eval { &{$_->[1]} };
397
398	if ($@) {
399	warn "$@";
400	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
401	override;
402	}
403
404	return 1 if $override;
405	}
406
407	0	589	}
408	}
409		590
410	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	591	=item $attachable->valid
411
412	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
413
414	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
415
416	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
417
418	Generate a global/object/player/map-specific event with the given arguments.
419
420	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
421	removed in future versions), and there is no public API to access override
422	results (if you must, access C<@cf::invoke_results> directly).
423
424	=back
425
426	#############################################################################
427
428	=head2 METHODS VALID FOR ALL CORE OBJECTS
429
430	=over 4
431
432	=item $object->valid, $player->valid, $map->valid
433		592
434	Just because you have a perl object does not mean that the corresponding	593	Just because you have a perl object does not mean that the corresponding
435	C-level object still exists. If you try to access an object that has no	594	C-level object still exists. If you try to access an object that has no
436	valid C counterpart anymore you get an exception at runtime. This method	595	valid C counterpart anymore you get an exception at runtime. This method
437	can be used to test for existence of the C object part without causing an	596	can be used to test for existence of the C object part without causing an
438	exception.	597	exception.
439		598
		599	=cut
		600
		601	# the following variables are defined in .xs and must not be re-created
		602	our @CB_GLOBAL = (); # registry for all global events
		603	our @CB_ATTACHABLE = (); # registry for all attachables
		604	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		605	our @CB_PLAYER = ();
		606	our @CB_CLIENT = ();
		607	our @CB_TYPE = (); # registry for type (cf-object class) based events
		608	our @CB_MAP = ();
		609
		610	my %attachment;
		611
		612	sub _attach_cb($$$$) {
		613	my ($registry, $event, $prio, $cb) = @_;
		614
		615	use sort 'stable';
		616
		617	$cb = [$prio, $cb];
		618
		619	@{$registry->[$event]} = sort
		620	{ $a->[0] cmp $b->[0] }
		621	@{$registry->[$event] || []}, $cb;
		622	}
		623
		624	# hack
		625	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		626
		627	# attach handles attaching event callbacks
		628	# the only thing the caller has to do is pass the correct
		629	# registry (== where the callback attaches to).
		630	sub _attach {
		631	my ($registry, $klass, @arg) = @_;
		632
		633	my $object_type;
		634	my $prio = 0;
		635	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		636
		637	#TODO: get rid of this hack
		638	if ($attachable_klass{$klass}) {
		639	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		640	}
		641
		642	while (@arg) {
		643	my $type = shift @arg;
		644
		645	if ($type eq "prio") {
		646	$prio = shift @arg;
		647
		648	} elsif ($type eq "type") {
		649	$object_type = shift @arg;
		650	$registry = $CB_TYPE[$object_type] ||= [];
		651
		652	} elsif ($type eq "subtype") {
		653	defined $object_type or Carp::croak "subtype specified without type";
		654	my $object_subtype = shift @arg;
		655	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		656
		657	} elsif ($type eq "package") {
		658	my $pkg = shift @arg;
		659
		660	while (my ($name, $id) = each %cb_id) {
		661	if (my $cb = $pkg->can ($name)) {
		662	_attach_cb $registry, $id, $prio, $cb;
		663	}
		664	}
		665
		666	} elsif (exists $cb_id{$type}) {
		667	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		668
		669	} elsif (ref $type) {
		670	warn "attaching objects not supported, ignoring.\n";
		671
		672	} else {
		673	shift @arg;
		674	warn "attach argument '$type' not supported, ignoring.\n";
		675	}
		676	}
		677	}
		678
		679	sub _object_attach {
		680	my ($obj, $name, %arg) = @_;
		681
		682	return if exists $obj->{_attachment}{$name};
		683
		684	if (my $attach = $attachment{$name}) {
		685	my $registry = $obj->registry;
		686
		687	for (@$attach) {
		688	my ($klass, @attach) = @$_;
		689	_attach $registry, $klass, @attach;
		690	}
		691
		692	$obj->{$name} = \%arg;
		693	} else {
		694	warn "object uses attachment '$name' that is not available, postponing.\n";
		695	}
		696
		697	$obj->{_attachment}{$name} = undef;
		698	}
		699
		700	sub cf::attachable::attach {
		701	if (ref $_[0]) {
		702	_object_attach @_;
		703	} else {
		704	_attach shift->_attach_registry, @_;
		705	}
		706	};
		707
		708	# all those should be optimised
		709	sub cf::attachable::detach {
		710	my ($obj, $name) = @_;
		711
		712	if (ref $obj) {
		713	delete $obj->{_attachment}{$name};
		714	reattach ($obj);
		715	} else {
		716	Carp::croak "cannot, currently, detach class attachments";
		717	}
		718	};
		719
		720	sub cf::attachable::attached {
		721	my ($obj, $name) = @_;
		722
		723	exists $obj->{_attachment}{$name}
		724	}
		725
		726	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		727	eval "#line " . __LINE__ . " 'cf.pm'
		728	sub cf::\L$klass\E::_attach_registry {
		729	(\\\@CB_$klass, KLASS_$klass)
		730	}
		731
		732	sub cf::\L$klass\E::attachment {
		733	my \$name = shift;
		734
		735	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		736	}
		737	";
		738	die if $@;
		739	}
		740
		741	our $override;
		742	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		743
		744	sub override {
		745	$override = 1;
		746	@invoke_results = ();
		747	}
		748
		749	sub do_invoke {
		750	my $event = shift;
		751	my $callbacks = shift;
		752
		753	@invoke_results = ();
		754
		755	local $override;
		756
		757	for (@$callbacks) {
		758	eval { &{$_->[1]} };
		759
		760	if ($@) {
		761	warn "$@";
		762	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		763	override;
		764	}
		765
		766	return 1 if $override;
		767	}
		768
		769	0
		770	}
		771
		772	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		773
		774	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		775
		776	Generate an object-specific event with the given arguments.
		777
		778	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		779	removed in future versions), and there is no public API to access override
		780	results (if you must, access C<@cf::invoke_results> directly).
		781
440	=back	782	=back
441		783
442	=cut	784	=cut
443
444	*cf::object::valid =
445	*cf::player::valid =
446	*cf::map::valid = \&cf::_valid;
447		785
448	#############################################################################	786	#############################################################################
449	# object support	787	# object support
450		788
451	sub instantiate {
452	my ($obj, $data) = @_;
453
454	$data = from_json $data;
455
456	for (@$data) {
457	my ($name, $args) = @$_;
458
459	$obj->attach ($name, %{$args || {} });
460	}
461	}
462
463	# basically do the same as instantiate, without calling instantiate
464	sub reattach {	789	sub reattach {
		790	# basically do the same as instantiate, without calling instantiate
465	my ($obj) = @_;	791	my ($obj) = @_;
		792
466	my $registry = $obj->registry;	793	my $registry = $obj->registry;
467		794
468	@$registry = ();	795	@$registry = ();
469		796
470	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	797	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
471		798
472	for my $name (keys %{ $obj->{_attachment} || {} }) {	799	for my $name (keys %{ $obj->{_attachment} || {} }) {
473	if (my $attach = $attachment{$name}) {	800	if (my $attach = $attachment{$name}) {
474	for (@$attach) {	801	for (@$attach) {
475	my ($klass, @attach) = @$_;	802	my ($klass, @attach) = @$_;
476	_attach @$registry, $klass, @attach;	803	_attach $registry, $klass, @attach;
477	}	804	}
478	} else {	805	} else {
479	warn "object uses attachment '$name' that is not available, postponing.\n";	806	warn "object uses attachment '$name' that is not available, postponing.\n";
480	}	807	}
481	}	808	}
482	}	809	}
483		810
484	sub object_freezer_save {	811	cf::attachable->attach (
485	my ($filename, $rdata, $objs) = @_;
486
487	if (length $$rdata) {
488	warn sprintf "saving %s (%d,%d)\n",
489	$filename, length $$rdata, scalar @$objs;
490
491	if (open my $fh, ">:raw", "$filename~") {
492	chmod SAVE_MODE, $fh;
493	syswrite $fh, $$rdata;
494	close $fh;
495
496	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
497	chmod SAVE_MODE, $fh;
498	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
499	close $fh;
500	rename "$filename.pst~", "$filename.pst";
501	} else {
502	unlink "$filename.pst";
503	}
504
505	rename "$filename~", $filename;
506	} else {
507	warn "FATAL: $filename~: $!\n";
508	}
509	} else {
510	unlink $filename;
511	unlink "$filename.pst";
512	}
513	}
514
515	sub object_thawer_load {
516	my ($filename) = @_;
517
518	local $/;
519
520	my $av;
521
522	#TODO: use sysread etc.
523	if (open my $data, "<:raw:perlio", $filename) {
524	$data = <$data>;
525	if (open my $pst, "<:raw:perlio", "$filename.pst") {
526	$av = eval { (Storable::thaw <$pst>)->{objs} };
527	}
528	return ($data, $av);
529	}
530
531	()
532	}
533
534	attach_to_objects
535	prio => -1000000,	812	prio => -1000000,
		813	on_instantiate => sub {
		814	my ($obj, $data) = @_;
		815
		816	$data = from_json $data;
		817
		818	for (@$data) {
		819	my ($name, $args) = @$_;
		820
		821	$obj->attach ($name, %{$args || {} });
		822	}
		823	},
		824	on_reattach => \&reattach,
536	on_clone => sub {	825	on_clone => sub {
537	my ($src, $dst) = @_;	826	my ($src, $dst) = @_;
538		827
539	@{$dst->registry} = @{$src->registry};	828	@{$dst->registry} = @{$src->registry};
540		829
541	%$dst = %$src;	830	%$dst = %$src;
542		831
543	%{$dst->{_attachment}} = %{$src->{_attachment}}	832	%{$dst->{_attachment}} = %{$src->{_attachment}}
544	if exists $src->{_attachment};	833	if exists $src->{_attachment};
545	},	834	},
546	;	835	);
		836
		837	sub object_freezer_save {
		838	my ($filename, $rdata, $objs) = @_;
		839
		840	sync_job {
		841	if (length $$rdata) {
		842	warn sprintf "saving %s (%d,%d)\n",
		843	$filename, length $$rdata, scalar @$objs;
		844
		845	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		846	chmod SAVE_MODE, $fh;
		847	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		848	aio_fsync $fh;
		849	close $fh;
		850
		851	if (@$objs) {
		852	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		853	chmod SAVE_MODE, $fh;
		854	my $data = Storable::nfreeze { version => 1, objs => $objs };
		855	aio_write $fh, 0, (length $data), $data, 0;
		856	aio_fsync $fh;
		857	close $fh;
		858	aio_rename "$filename.pst~", "$filename.pst";
		859	}
		860	} else {
		861	aio_unlink "$filename.pst";
		862	}
		863
		864	aio_rename "$filename~", $filename;
		865	} else {
		866	warn "FATAL: $filename~: $!\n";
		867	}
		868	} else {
		869	aio_unlink $filename;
		870	aio_unlink "$filename.pst";
		871	}
		872	}
		873	}
		874
		875	sub object_freezer_as_string {
		876	my ($rdata, $objs) = @_;
		877
		878	use Data::Dumper;
		879
		880	$$rdata . Dumper $objs
		881	}
		882
		883	sub object_thawer_load {
		884	my ($filename) = @_;
		885
		886	my ($data, $av);
		887
		888	(aio_load $filename, $data) >= 0
		889	or return;
		890
		891	unless (aio_stat "$filename.pst") {
		892	(aio_load "$filename.pst", $av) >= 0
		893	or return;
		894	$av = eval { (Storable::thaw $av)->{objs} };
		895	}
		896
		897	warn sprintf "loading %s (%d)\n",
		898	$filename, length $data, scalar @{$av || []};#d#
		899	return ($data, $av);
		900	}
547		901
548	#############################################################################	902	#############################################################################
549	# old plug-in events	903	# command handling &c
550		904
551	sub inject_event {	905	=item cf::register_command $name => \&callback($ob,$args);
552	my $extension = shift;
553	my $event_code = shift;
554		906
555	my $cb = $hook[$event_code]{$extension}	907	Register a callback for execution when the client sends the user command
556	or return;	908	$name.
557		909
558	&$cb	910	=cut
559	}
560
561	sub inject_global_event {
562	my $event = shift;
563
564	my $cb = $hook[$event]
565	or return;
566
567	List::Util::max map &$_, values %$cb
568	}
569
570	sub inject_command {
571	my ($name, $obj, $params) = @_;
572
573	for my $cmd (@{ $command{$name} }) {
574	$cmd->[1]->($obj, $params);
575	}
576
577	-1
578	}
579		911
580	sub register_command {	912	sub register_command {
581	my ($name, $time, $cb) = @_;	913	my ($name, $cb) = @_;
582		914
583	my $caller = caller;	915	my $caller = caller;
584	#warn "registering command '$name/$time' to '$caller'";	916	#warn "registering command '$name/$time' to '$caller'";
585		917
586	push @{ $command{$name} }, [$time, $cb, $caller];	918	push @{ $COMMAND{$name} }, [$caller, $cb];
587	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
588	}	919	}
		920
		921	=item cf::register_extcmd $name => \&callback($pl,$packet);
		922
		923	Register a callbackf ro execution when the client sends an extcmd packet.
		924
		925	If the callback returns something, it is sent back as if reply was being
		926	called.
		927
		928	=cut
589		929
590	sub register_extcmd {	930	sub register_extcmd {
591	my ($name, $cb) = @_;	931	my ($name, $cb) = @_;
592		932
593	my $caller = caller;	933	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";	934	#warn "registering extcmd '$name' to '$caller'";
595		935
596	$extcmd{$name} = [$cb, $caller];	936	$EXTCMD{$name} = [$cb, $caller];
597	}	937	}
		938
		939	cf::player->attach (
		940	on_command => sub {
		941	my ($pl, $name, $params) = @_;
		942
		943	my $cb = $COMMAND{$name}
		944	or return;
		945
		946	for my $cmd (@$cb) {
		947	$cmd->[1]->($pl->ob, $params);
		948	}
		949
		950	cf::override;
		951	},
		952	on_extcmd => sub {
		953	my ($pl, $buf) = @_;
		954
		955	my $msg = eval { from_json $buf };
		956
		957	if (ref $msg) {
		958	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		959	if (my %reply = $cb->[0]->($pl, $msg)) {
		960	$pl->ext_reply ($msg->{msgid}, %reply);
		961	}
		962	}
		963	} else {
		964	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		965	}
		966
		967	cf::override;
		968	},
		969	);
598		970
599	sub register {	971	sub register {
600	my ($base, $pkg) = @_;	972	my ($base, $pkg) = @_;
601		973
602	#TODO	974	#TODO
…		…
621	. "#line 1 \"$path\"\n{\n"	993	. "#line 1 \"$path\"\n{\n"
622	. (do { local $/; <$fh> })	994	. (do { local $/; <$fh> })
623	. "\n};\n1";	995	. "\n};\n1";
624		996
625	eval $source	997	eval $source
626	or die "$path: $@";	998	or die $@ ? "$path: $@\n"
		999	: "extension disabled.\n";
627		1000
628	push @exts, $pkg;	1001	push @exts, $pkg;
629	$ext_pkg{$base} = $pkg;	1002	$ext_pkg{$base} = $pkg;
630		1003
631	# no strict 'refs';	1004	# no strict 'refs';
…		…
644	# for my $idx (0 .. $#PLUGIN_EVENT) {	1017	# for my $idx (0 .. $#PLUGIN_EVENT) {
645	# delete $hook[$idx]{$pkg};	1018	# delete $hook[$idx]{$pkg};
646	# }	1019	# }
647		1020
648	# remove commands	1021	# remove commands
649	for my $name (keys %command) {	1022	for my $name (keys %COMMAND) {
650	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1023	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
651		1024
652	if (@cb) {	1025	if (@cb) {
653	$command{$name} = \@cb;	1026	$COMMAND{$name} = \@cb;
654	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
655	} else {	1027	} else {
656	delete $command{$name};
657	delete $COMMAND{"$name\000"};	1028	delete $COMMAND{$name};
658	}	1029	}
659	}	1030	}
660		1031
661	# remove extcmds	1032	# remove extcmds
662	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1033	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
663	delete $extcmd{$name};	1034	delete $EXTCMD{$name};
664	}	1035	}
665		1036
666	if (my $cb = $pkg->can ("unload")) {	1037	if (my $cb = $pkg->can ("unload")) {
667	eval {	1038	eval {
668	$cb->($pkg);	1039	$cb->($pkg);
…		…
672		1043
673	Symbol::delete_package $pkg;	1044	Symbol::delete_package $pkg;
674	}	1045	}
675		1046
676	sub load_extensions {	1047	sub load_extensions {
677	my $LIBDIR = maps_directory "perl";
678
679	for my $ext (<$LIBDIR/*.ext>) {	1048	for my $ext (<$LIBDIR/*.ext>) {
680	next unless -r $ext;	1049	next unless -r $ext;
681	eval {	1050	eval {
682	load_extension $ext;	1051	load_extension $ext;
683	1	1052	1
684	} or warn "$ext not loaded: $@";	1053	} or warn "$ext not loaded: $@";
685	}	1054	}
686	}	1055	}
687		1056
688	#############################################################################	1057	#############################################################################
689	# extcmd framework, basically convert ext <msg>
690	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
691
692	attach_to_players
693	on_extcmd => sub {
694	my ($pl, $buf) = @_;
695
696	my $msg = eval { from_json $buf };
697
698	if (ref $msg) {
699	if (my $cb = $extcmd{$msg->{msgtype}}) {
700	if (my %reply = $cb->[0]->($pl, $msg)) {
701	$pl->ext_reply ($msg->{msgid}, %reply);
702	}
703	}
704	} else {
705	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
706	}
707
708	cf::override;
709	},
710	;
711
712	#############################################################################
713	# load/save/clean perl data associated with a map	1058	# load/save/clean perl data associated with a map
714		1059
715	*cf::mapsupport::on_clean = sub {	1060	*cf::mapsupport::on_clean = sub {
716	my ($map) = @_;	1061	my ($map) = @_;
717		1062
…		…
719	defined $path or return;	1064	defined $path or return;
720		1065
721	unlink "$path.pst";	1066	unlink "$path.pst";
722	};	1067	};
723		1068
724	attach_to_maps prio => -10000, package => cf::mapsupport::;	1069	cf::map->attach (prio => -10000, package => cf::mapsupport::);
725		1070
726	#############################################################################	1071	#############################################################################
727	# load/save perl data associated with player->ob objects	1072	# load/save perl data associated with player->ob objects
728		1073
729	sub all_objects(@) {	1074	sub all_objects(@) {
730	@_, map all_objects ($_->inv), @_	1075	@_, map all_objects ($_->inv), @_
731	}	1076	}
732		1077
733	# TODO: compatibility cruft, remove when no longer needed	1078	# TODO: compatibility cruft, remove when no longer needed
734	attach_to_players	1079	cf::player->attach (
735	on_load => sub {	1080	on_load => sub {
736	my ($pl, $path) = @_;	1081	my ($pl, $path) = @_;
737		1082
738	for my $o (all_objects $pl->ob) {	1083	for my $o (all_objects $pl->ob) {
739	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1084	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
741		1086
742	%$o = %{ Storable::thaw pack "H*", $value };	1087	%$o = %{ Storable::thaw pack "H*", $value };
743	}	1088	}
744	}	1089	}
745	},	1090	},
746	;	1091	);
747		1092
748	#############################################################################	1093	#############################################################################
749		1094
750	=head2 CORE EXTENSIONS	1095	=head2 CORE EXTENSIONS
751		1096
752	Functions and methods that extend core crossfire objects.	1097	Functions and methods that extend core crossfire objects.
		1098
		1099	=head3 cf::player
753		1100
754	=over 4	1101	=over 4
755		1102
756	=item cf::player::exists $login	1103	=item cf::player::exists $login
757		1104
…		…
762	sub cf::player::exists($) {	1109	sub cf::player::exists($) {
763	cf::player::find $_[0]	1110	cf::player::find $_[0]
764	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1111	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
765	}	1112	}
766		1113
		1114	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1115
		1116	Sends an ext reply to the player.
		1117
		1118	=cut
		1119
		1120	sub cf::player::ext_reply($$$%) {
		1121	my ($self, $id, %msg) = @_;
		1122
		1123	$msg{msgid} = $id;
		1124
		1125	$self->send ("ext " . to_json \%msg);
		1126	}
		1127
		1128	=back
		1129
		1130
		1131	=head3 cf::map
		1132
		1133	=over 4
		1134
		1135	=cut
		1136
		1137	package cf::map;
		1138
		1139	use Fcntl;
		1140	use Coro::AIO;
		1141
		1142	our $MAX_RESET = 7200;
		1143	our $DEFAULT_RESET = 3600;
		1144
		1145	sub generate_random_map {
		1146	my ($path, $rmp) = @_;
		1147
		1148	# mit "rum" bekleckern, nicht
		1149	cf::map::_create_random_map
		1150	$path,
		1151	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1152	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1153	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1154	$rmp->{exit_on_final_map},
		1155	$rmp->{xsize}, $rmp->{ysize},
		1156	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1157	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1158	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1159	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1160	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1161	(cf::region::find $rmp->{region})
		1162	}
		1163
		1164	# and all this just because we cannot iterate over
		1165	# all maps in C++...
		1166	sub change_all_map_light {
		1167	my ($change) = @_;
		1168
		1169	$_->change_map_light ($change)
		1170	for grep $_->outdoor, values %cf::MAP;
		1171	}
		1172
		1173	sub try_load_header($) {
		1174	my ($path) = @_;
		1175
		1176	utf8::encode $path;
		1177	aio_open $path, O_RDONLY, 0
		1178	or return;
		1179
		1180	my $map = cf::map::new
		1181	or return;
		1182
		1183	$map->load_header ($path)
		1184	or return;
		1185
		1186	$map->{load_path} = $path;
		1187
		1188	$map
		1189	}
		1190
		1191	sub find_map;
		1192	sub find_map {
		1193	my ($path, $origin) = @_;
		1194
		1195	#warn "find_map<$path,$origin>\n";#d#
		1196
		1197	$path = new cf::path $path, $origin && $origin->path;
		1198	my $key = $path->as_string;
		1199
		1200	cf::lock_wait "map_find:$key";
		1201
		1202	$cf::MAP{$key} || do {
		1203	my $guard = cf::lock_acquire "map_find:$key";
		1204
		1205	# do it the slow way
		1206	my $map = try_load_header $path->save_path;
		1207
		1208	if ($map) {
		1209	# safety
		1210	$map->{instantiate_time} = $cf::RUNTIME
		1211	if $map->{instantiate_time} > $cf::RUNTIME;
		1212	} else {
		1213	if (my $rmp = $path->random_map_params) {
		1214	$map = generate_random_map $key, $rmp;
		1215	} else {
		1216	$map = try_load_header $path->load_path;
		1217	}
		1218
		1219	$map or return;
		1220
		1221	$map->{load_original} = 1;
		1222	$map->{instantiate_time} = $cf::RUNTIME;
		1223	$map->instantiate;
		1224
		1225	# per-player maps become, after loading, normal maps
		1226	$map->per_player (0) if $path->{user_rel};
		1227	}
		1228
		1229	$map->path ($key);
		1230	$map->{path} = $path;
		1231	$map->{last_save} = $cf::RUNTIME;
		1232	$map->last_access ($cf::RUNTIME);
		1233
		1234	if ($map->should_reset) {
		1235	$map->reset;
		1236	undef $guard;
		1237	$map = find_map $path
		1238	or return;
		1239	}
		1240
		1241	$cf::MAP{$key} = $map
		1242	}
		1243	}
		1244
		1245	sub load {
		1246	my ($self) = @_;
		1247
		1248	my $path = $self->{path};
		1249	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1250
		1251	return if $self->in_memory != cf::MAP_SWAPPED;
		1252
		1253	$self->in_memory (cf::MAP_LOADING);
		1254
		1255	$self->alloc;
		1256	$self->load_objects ($self->{load_path}, 1)
		1257	or return;
		1258
		1259	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1260	if delete $self->{load_original};
		1261
		1262	if (my $uniq = $path->uniq_path) {
		1263	utf8::encode $uniq;
		1264	if (aio_open $uniq, O_RDONLY, 0) {
		1265	$self->clear_unique_items;
		1266	$self->load_objects ($uniq, 0);
		1267	}
		1268	}
		1269
		1270	# now do the right thing for maps
		1271	$self->link_multipart_objects;
		1272
		1273	if ($self->{path}->is_style_map) {
		1274	$self->{deny_save} = 1;
		1275	$self->{deny_reset} = 1;
		1276	} else {
		1277	$self->fix_auto_apply;
		1278	$self->decay_objects;
		1279	$self->update_buttons;
		1280	$self->set_darkness_map;
		1281	$self->difficulty ($self->estimate_difficulty)
		1282	unless $self->difficulty;
		1283	$self->activate;
		1284	}
		1285
		1286	$self->in_memory (cf::MAP_IN_MEMORY);
		1287	}
		1288
		1289	sub load_map_sync {
		1290	my ($path, $origin) = @_;
		1291
		1292	#warn "load_map_sync<$path, $origin>\n";#d#
		1293
		1294	cf::sync_job {
		1295	my $map = cf::map::find_map $path, $origin
		1296	or return;
		1297	$map->load;
		1298	$map
		1299	}
		1300	}
		1301
		1302	sub save {
		1303	my ($self) = @_;
		1304
		1305	$self->{last_save} = $cf::RUNTIME;
		1306
		1307	return unless $self->dirty;
		1308
		1309	my $save = $self->{path}->save_path; utf8::encode $save;
		1310	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1311
		1312	$self->{load_path} = $save;
		1313
		1314	return if $self->{deny_save};
		1315
		1316	if ($uniq) {
		1317	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1318	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1319	} else {
		1320	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1321	}
		1322	}
		1323
		1324	sub swap_out {
		1325	my ($self) = @_;
		1326
		1327	return if $self->players;
		1328	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1329	return if $self->{deny_save};
		1330
		1331	$self->save;
		1332	$self->clear;
		1333	$self->in_memory (cf::MAP_SWAPPED);
		1334	}
		1335
		1336	sub reset_at {
		1337	my ($self) = @_;
		1338
		1339	# TODO: safety, remove and allow resettable per-player maps
		1340	return 1e99 if $self->{path}{user_rel};
		1341	return 1e99 if $self->{deny_reset};
		1342
		1343	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1344	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1345
		1346	$time + $to
		1347	}
		1348
		1349	sub should_reset {
		1350	my ($self) = @_;
		1351
		1352	$self->reset_at <= $cf::RUNTIME
		1353	}
		1354
		1355	sub unlink_save {
		1356	my ($self) = @_;
		1357
		1358	utf8::encode (my $save = $self->{path}->save_path);
		1359	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1360	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1361	}
		1362
		1363	sub rename {
		1364	my ($self, $new_path) = @_;
		1365
		1366	$self->unlink_save;
		1367
		1368	delete $cf::MAP{$self->path};
		1369	$self->{path} = new cf::path $new_path;
		1370	$self->path ($self->{path}->as_string);
		1371	$cf::MAP{$self->path} = $self;
		1372
		1373	$self->save;
		1374	}
		1375
		1376	sub reset {
		1377	my ($self) = @_;
		1378
		1379	return if $self->players;
		1380	return if $self->{path}{user_rel};#d#
		1381
		1382	warn "resetting map ", $self->path;#d#
		1383
		1384	delete $cf::MAP{$self->path};
		1385
		1386	$_->clear_links_to ($self) for values %cf::MAP;
		1387
		1388	$self->unlink_save;
		1389	$self->destroy;
		1390	}
		1391
		1392	my $nuke_counter = "aaaa";
		1393
		1394	sub nuke {
		1395	my ($self) = @_;
		1396
		1397	$self->{deny_save} = 1;
		1398	$self->reset_timeout (1);
		1399	$self->rename ("{nuke}/" . ($nuke_counter++));
		1400	$self->reset; # polite request, might not happen
		1401	}
		1402
		1403	sub customise_for {
		1404	my ($map, $ob) = @_;
		1405
		1406	if ($map->per_player) {
		1407	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1408	}
		1409
		1410	$map
		1411	}
		1412
		1413	sub emergency_save {
		1414	local $cf::FREEZE = 1;
		1415
		1416	warn "enter emergency map save\n";
		1417
		1418	cf::sync_job {
		1419	warn "begin emergency map save\n";
		1420	$_->save for values %cf::MAP;
		1421	};
		1422
		1423	warn "end emergency map save\n";
		1424	}
		1425
		1426	package cf;
		1427
		1428	=back
		1429
		1430
		1431	=head3 cf::object::player
		1432
		1433	=over 4
		1434
767	=item $player->reply ($npc, $msg[, $flags])	1435	=item $player_object->reply ($npc, $msg[, $flags])
768		1436
769	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1437	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
770	can be C<undef>. Does the right thing when the player is currently in a	1438	can be C<undef>. Does the right thing when the player is currently in a
771	dialogue with the given NPC character.	1439	dialogue with the given NPC character.
772		1440
773	=cut	1441	=cut
774		1442
775	# rough implementation of a future "reply" method that works	1443	# rough implementation of a future "reply" method that works
776	# with dialog boxes.	1444	# with dialog boxes.
		1445	#TODO: the first argument must go, split into a $npc->reply_to ( method
777	sub cf::object::player::reply($$$;$) {	1446	sub cf::object::player::reply($$$;$) {
778	my ($self, $npc, $msg, $flags) = @_;	1447	my ($self, $npc, $msg, $flags) = @_;
779		1448
780	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1449	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
781		1450
…		…
785	$msg = $npc->name . " says: $msg" if $npc;	1454	$msg = $npc->name . " says: $msg" if $npc;
786	$self->message ($msg, $flags);	1455	$self->message ($msg, $flags);
787	}	1456	}
788	}	1457	}
789		1458
790	=item $player->ext_reply ($msgid, $msgtype, %msg)	1459	=item $player_object->may ("access")
791		1460
792	Sends an ext reply to the player.	1461	Returns wether the given player is authorized to access resource "access"
		1462	(e.g. "command_wizcast").
793		1463
794	=cut	1464	=cut
795		1465
796	sub cf::player::ext_reply($$$%) {	1466	sub cf::object::player::may {
		1467	my ($self, $access) = @_;
		1468
		1469	$self->flag (cf::FLAG_WIZ) ||
		1470	(ref $cf::CFG{"may_$access"}
		1471	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1472	: $cf::CFG{"may_$access"})
		1473	}
		1474
		1475	=item $player_object->enter_link
		1476
		1477	Freezes the player and moves him/her to a special map (C<{link}>).
		1478
		1479	The player should be reaosnably safe there for short amounts of time. You
		1480	I<MUST> call C<leave_link> as soon as possible, though.
		1481
		1482	=item $player_object->leave_link ($map, $x, $y)
		1483
		1484	Moves the player out of the specila link map onto the given map. If the
		1485	map is not valid (or omitted), the player will be moved back to the
		1486	location he/she was before the call to C<enter_link>, or, if that fails,
		1487	to the emergency map position.
		1488
		1489	Might block.
		1490
		1491	=cut
		1492
		1493	sub cf::object::player::enter_link {
		1494	my ($self) = @_;
		1495
		1496	$self->deactivate_recursive;
		1497
		1498	return if $self->map == $LINK_MAP;
		1499
		1500	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1501	if $self->map;
		1502
		1503	$self->enter_map ($LINK_MAP, 20, 20);
		1504	}
		1505
		1506	sub cf::object::player::leave_link {
		1507	my ($self, $map, $x, $y) = @_;
		1508
		1509	my $link_pos = delete $self->{_link_pos};
		1510
		1511	unless ($map) {
		1512	# restore original map position
		1513	($map, $x, $y) = @{ $link_pos || [] };
		1514	$map = cf::map::find_map $map;
		1515
		1516	unless ($map) {
		1517	($map, $x, $y) = @$EMERGENCY_POSITION;
		1518	$map = cf::map::find_map $map
		1519	or die "FATAL: cannot load emergency map\n";
		1520	}
		1521	}
		1522
		1523	($x, $y) = (-1, -1)
		1524	unless (defined $x) && (defined $y);
		1525
		1526	# use -1 or undef as default coordinates, not 0, 0
		1527	($x, $y) = ($map->enter_x, $map->enter_y)
		1528	if $x <=0 && $y <= 0;
		1529
		1530	$map->load;
		1531
		1532	$self->activate_recursive;
		1533	$self->enter_map ($map, $x, $y);
		1534	}
		1535
		1536	cf::player->attach (
		1537	on_logout => sub {
		1538	my ($pl) = @_;
		1539
		1540	# abort map switching before logout
		1541	if ($pl->ob->{_link_pos}) {
		1542	cf::sync_job {
		1543	$pl->ob->leave_link
		1544	};
		1545	}
		1546	},
		1547	on_login => sub {
		1548	my ($pl) = @_;
		1549
		1550	# try to abort aborted map switching on player login :)
		1551	# should happen only on crashes
		1552	if ($pl->ob->{_link_pos}) {
		1553	$pl->ob->enter_link;
		1554	cf::async {
		1555	# we need this sleep as the login has a concurrent enter_exit running
		1556	# and this sleep increases chances of the player not ending up in scorn
		1557	Coro::Timer::sleep 1;
		1558	$pl->ob->leave_link;
		1559	};
		1560	}
		1561	},
		1562	);
		1563
		1564	=item $player_object->goto_map ($path, $x, $y)
		1565
		1566	=cut
		1567
		1568	sub cf::object::player::goto_map {
		1569	my ($self, $path, $x, $y) = @_;
		1570
		1571	$self->enter_link;
		1572
		1573	(cf::async {
		1574	$path = new cf::path $path;
		1575
		1576	my $map = cf::map::find_map $path->as_string;
		1577	$map = $map->customise_for ($self) if $map;
		1578
		1579	# warn "entering ", $map->path, " at ($x, $y)\n"
		1580	# if $map;
		1581
		1582	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1583
		1584	$self->leave_link ($map, $x, $y);
		1585	})->prio (1);
		1586	}
		1587
		1588	=item $player_object->enter_exit ($exit_object)
		1589
		1590	=cut
		1591
		1592	sub parse_random_map_params {
		1593	my ($spec) = @_;
		1594
		1595	my $rmp = { # defaults
		1596	xsize => 10,
		1597	ysize => 10,
		1598	};
		1599
		1600	for (split /\n/, $spec) {
		1601	my ($k, $v) = split /\s+/, $_, 2;
		1602
		1603	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1604	}
		1605
		1606	$rmp
		1607	}
		1608
		1609	sub prepare_random_map {
		1610	my ($exit) = @_;
		1611
		1612	# all this does is basically replace the /! path by
		1613	# a new random map path (?random/...) with a seed
		1614	# that depends on the exit object
		1615
		1616	my $rmp = parse_random_map_params $exit->msg;
		1617
		1618	if ($exit->map) {
		1619	$rmp->{region} = $exit->map->region_name;
		1620	$rmp->{origin_map} = $exit->map->path;
		1621	$rmp->{origin_x} = $exit->x;
		1622	$rmp->{origin_y} = $exit->y;
		1623	}
		1624
		1625	$rmp->{random_seed} ||= $exit->random_seed;
		1626
		1627	my $data = cf::to_json $rmp;
		1628	my $md5 = Digest::MD5::md5_hex $data;
		1629
		1630	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1631	aio_write $fh, 0, (length $data), $data, 0;
		1632
		1633	$exit->slaying ("?random/$md5");
		1634	$exit->msg (undef);
		1635	}
		1636	}
		1637
		1638	sub cf::object::player::enter_exit {
797	my ($self, $id, %msg) = @_;	1639	my ($self, $exit) = @_;
798		1640
799	$msg{msgid} = $id;	1641	return unless $self->type == cf::PLAYER;
800		1642
801	$self->send ("ext " . to_json \%msg);	1643	$self->enter_link;
		1644
		1645	(cf::async {
		1646	unless (eval {
		1647	prepare_random_map $exit
		1648	if $exit->slaying eq "/!";
		1649
		1650	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1651	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1652
		1653	1;
		1654	}) {
		1655	$self->message ("Something went wrong deep within the crossfire server. "
		1656	. "I'll try to bring you back to the map you were before. "
		1657	. "Please report this to the dungeon master",
		1658	cf::NDI_UNIQUE | cf::NDI_RED);
		1659
		1660	warn "ERROR in enter_exit: $@";
		1661	$self->leave_link;
		1662	}
		1663	})->prio (1);
802	}	1664	}
		1665
		1666	=head3 cf::client
		1667
		1668	=over 4
		1669
		1670	=item $client->send_drawinfo ($text, $flags)
		1671
		1672	Sends a drawinfo packet to the client. Circumvents output buffering so
		1673	should not be used under normal circumstances.
		1674
		1675	=cut
		1676
		1677	sub cf::client::send_drawinfo {
		1678	my ($self, $text, $flags) = @_;
		1679
		1680	utf8::encode $text;
		1681	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1682	}
		1683
		1684
		1685	=item $success = $client->query ($flags, "text", \&cb)
		1686
		1687	Queues a query to the client, calling the given callback with
		1688	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1689	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1690
		1691	Queries can fail, so check the return code. Or don't, as queries will become
		1692	reliable at some point in the future.
		1693
		1694	=cut
		1695
		1696	sub cf::client::query {
		1697	my ($self, $flags, $text, $cb) = @_;
		1698
		1699	return unless $self->state == ST_PLAYING
		1700	|| $self->state == ST_SETUP
		1701	|| $self->state == ST_CUSTOM;
		1702
		1703	$self->state (ST_CUSTOM);
		1704
		1705	utf8::encode $text;
		1706	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1707
		1708	$self->send_packet ($self->{query_queue}[0][0])
		1709	if @{ $self->{query_queue} } == 1;
		1710	}
		1711
		1712	cf::client->attach (
		1713	on_reply => sub {
		1714	my ($ns, $msg) = @_;
		1715
		1716	# this weird shuffling is so that direct followup queries
		1717	# get handled first
		1718	my $queue = delete $ns->{query_queue};
		1719
		1720	(shift @$queue)->[1]->($msg);
		1721
		1722	push @{ $ns->{query_queue} }, @$queue;
		1723
		1724	if (@{ $ns->{query_queue} } == @$queue) {
		1725	if (@$queue) {
		1726	$ns->send_packet ($ns->{query_queue}[0][0]);
		1727	} else {
		1728	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1729	}
		1730	}
		1731	},
		1732	);
		1733
		1734	=item $client->coro (\&cb)
		1735
		1736	Create a new coroutine, running the specified callback. The coroutine will
		1737	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1738	or loss of connection).
		1739
		1740	=cut
		1741
		1742	sub cf::client::coro {
		1743	my ($self, $cb) = @_;
		1744
		1745	my $coro = &cf::async ($cb);
		1746
		1747	$coro->on_destroy (sub {
		1748	delete $self->{_coro}{$coro+0};
		1749	});
		1750
		1751	$self->{_coro}{$coro+0} = $coro;
		1752
		1753	$coro
		1754	}
		1755
		1756	cf::client->attach (
		1757	on_destroy => sub {
		1758	my ($ns) = @_;
		1759
		1760	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1761	},
		1762	);
803		1763
804	=back	1764	=back
805		1765
806	=cut
807
808	#############################################################################
809		1766
810	=head2 SAFE SCRIPTING	1767	=head2 SAFE SCRIPTING
811		1768
812	Functions that provide a safe environment to compile and execute	1769	Functions that provide a safe environment to compile and execute
813	snippets of perl code without them endangering the safety of the server	1770	snippets of perl code without them endangering the safety of the server
814	itself. Looping constructs, I/O operators and other built-in functionality	1771	itself. Looping constructs, I/O operators and other built-in functionality
815	is not available in the safe scripting environment, and the number of	1772	is not available in the safe scripting environment, and the number of
816	functions and methods that cna be called is greatly reduced.	1773	functions and methods that can be called is greatly reduced.
817		1774
818	=cut	1775	=cut
819		1776
820	our $safe = new Safe "safe";	1777	our $safe = new Safe "safe";
821	our $safe_hole = new Safe::Hole;	1778	our $safe_hole = new Safe::Hole;
…		…
828		1785
829	=pod	1786	=pod
830		1787
831	The following fucntions and emthods are available within a safe environment:	1788	The following fucntions and emthods are available within a safe environment:
832		1789
833	cf::object contr pay_amount pay_player	1790	cf::object contr pay_amount pay_player map
834	cf::object::player player	1791	cf::object::player player
835	cf::player peaceful	1792	cf::player peaceful
		1793	cf::map trigger
836		1794
837	=cut	1795	=cut
838		1796
839	for (	1797	for (
840	["cf::object" => qw(contr pay_amount pay_player)],	1798	["cf::object" => qw(contr pay_amount pay_player map)],
841	["cf::object::player" => qw(player)],	1799	["cf::object::player" => qw(player)],
842	["cf::player" => qw(peaceful)],	1800	["cf::player" => qw(peaceful)],
		1801	["cf::map" => qw(trigger)],
843	) {	1802	) {
844	no strict 'refs';	1803	no strict 'refs';
845	my ($pkg, @funs) = @$_;	1804	my ($pkg, @funs) = @$_;
846	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1805	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
847	for @funs;	1806	for @funs;
…		…
912	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1871	*{"safe::$fun"} = $safe_hole->wrap ($cb);
913	}	1872	}
914		1873
915	=back	1874	=back
916		1875
		1876	=cut
		1877
917	#############################################################################	1878	#############################################################################
918		1879
919	=head2 EXTENSION DATABASE SUPPORT	1880	=head2 EXTENSION DATABASE SUPPORT
920		1881
921	Crossfire maintains a very simple database for extension use. It can	1882	Crossfire maintains a very simple database for extension use. It can
…		…
955		1916
956	Immediately write the database to disk I<if it is dirty>.	1917	Immediately write the database to disk I<if it is dirty>.
957		1918
958	=cut	1919	=cut
959		1920
		1921	our $DB;
		1922
960	{	1923	{
961	my $db;
962	my $path = cf::localdir . "/database.pst";	1924	my $path = cf::localdir . "/database.pst";
963		1925
964	sub db_load() {	1926	sub db_load() {
965	warn "loading database $path\n";#d# remove later
966	$db = stat $path ? Storable::retrieve $path : { };	1927	$DB = stat $path ? Storable::retrieve $path : { };
967	}	1928	}
968		1929
969	my $pid;	1930	my $pid;
970		1931
971	sub db_save() {	1932	sub db_save() {
972	warn "saving database $path\n";#d# remove later
973	waitpid $pid, 0 if $pid;	1933	waitpid $pid, 0 if $pid;
974	if (0 == ($pid = fork)) {	1934	if (0 == ($pid = fork)) {
975	$db->{_meta}{version} = 1;	1935	$DB->{_meta}{version} = 1;
976	Storable::nstore $db, "$path~";	1936	Storable::nstore $DB, "$path~";
977	rename "$path~", $path;	1937	rename "$path~", $path;
978	cf::_exit 0 if defined $pid;	1938	cf::_exit 0 if defined $pid;
979	}	1939	}
980	}	1940	}
981		1941
…		…
984	sub db_sync() {	1944	sub db_sync() {
985	db_save if $dirty;	1945	db_save if $dirty;
986	undef $dirty;	1946	undef $dirty;
987	}	1947	}
988		1948
989	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	1949	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
990	db_sync;	1950	db_sync;
991	});	1951	});
992		1952
993	sub db_dirty() {	1953	sub db_dirty() {
994	$dirty = 1;	1954	$dirty = 1;
995	$idle->start;	1955	$idle->start;
996	}	1956	}
997		1957
998	sub db_get($;$) {	1958	sub db_get($;$) {
999	@_ >= 2	1959	@_ >= 2
1000	? $db->{$_[0]}{$_[1]}	1960	? $DB->{$_[0]}{$_[1]}
1001	: ($db->{$_[0]} ||= { })	1961	: ($DB->{$_[0]} ||= { })
1002	}	1962	}
1003		1963
1004	sub db_put($$;$) {	1964	sub db_put($$;$) {
1005	if (@_ >= 3) {	1965	if (@_ >= 3) {
1006	$db->{$_[0]}{$_[1]} = $_[2];	1966	$DB->{$_[0]}{$_[1]} = $_[2];
1007	} else {	1967	} else {
1008	$db->{$_[0]} = $_[1];	1968	$DB->{$_[0]} = $_[1];
1009	}	1969	}
1010	db_dirty;	1970	db_dirty;
1011	}	1971	}
1012		1972
1013	attach_global	1973	cf::global->attach (
1014	prio => 10000,	1974	prio => 10000,
1015	on_cleanup => sub {	1975	on_cleanup => sub {
1016	db_sync;	1976	db_sync;
1017	},	1977	},
1018	;	1978	);
1019	}	1979	}
1020		1980
1021	#############################################################################	1981	#############################################################################
1022	# the server's main()	1982	# the server's main()
1023		1983
		1984	sub cfg_load {
		1985	open my $fh, "<:utf8", cf::confdir . "/config"
		1986	or return;
		1987
		1988	local $/;
		1989	*CFG = YAML::Syck::Load <$fh>;
		1990	}
		1991
1024	sub main {	1992	sub main {
		1993	# we must not ever block the main coroutine
		1994	local $Coro::idle = sub {
		1995	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		1996	(Coro::unblock_sub {
		1997	Event::one_event;
		1998	})->();
		1999	};
		2000
		2001	cfg_load;
1025	db_load;	2002	db_load;
1026	load_extensions;	2003	load_extensions;
1027	Event::loop;	2004	Event::loop;
1028	}	2005	}
1029		2006
1030	#############################################################################	2007	#############################################################################
1031	# initialisation	2008	# initialisation
1032		2009
1033	sub _perl_reload(&) {	2010	sub reload() {
1034	my ($msg) = @_;	2011	# can/must only be called in main
		2012	if ($Coro::current != $Coro::main) {
		2013	warn "can only reload from main coroutine\n";
		2014	return;
		2015	}
1035		2016
1036	$msg->("reloading...");	2017	warn "reloading...";
		2018
		2019	local $FREEZE = 1;
		2020	cf::emergency_save;
1037		2021
1038	eval {	2022	eval {
		2023	# if anything goes wrong in here, we should simply crash as we already saved
		2024
1039	# cancel all watchers	2025	# cancel all watchers
1040	$_->cancel for Event::all_watchers;	2026	for (Event::all_watchers) {
		2027	$_->cancel if $_->data & WF_AUTOCANCEL;
		2028	}
		2029
		2030	# cancel all extension coros
		2031	$_->cancel for values %EXT_CORO;
		2032	%EXT_CORO = ();
1041		2033
1042	# unload all extensions	2034	# unload all extensions
1043	for (@exts) {	2035	for (@exts) {
1044	$msg->("unloading <$_>");	2036	warn "unloading <$_>";
1045	unload_extension $_;	2037	unload_extension $_;
1046	}	2038	}
1047		2039
1048	# unload all modules loaded from $LIBDIR	2040	# unload all modules loaded from $LIBDIR
1049	while (my ($k, $v) = each %INC) {	2041	while (my ($k, $v) = each %INC) {
1050	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2042	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1051		2043
1052	$msg->("removing <$k>");	2044	warn "removing <$k>";
1053	delete $INC{$k};	2045	delete $INC{$k};
1054		2046
1055	$k =~ s/\.pm$//;	2047	$k =~ s/\.pm$//;
1056	$k =~ s/\//::/g;	2048	$k =~ s/\//::/g;
1057		2049
…		…
1062	Symbol::delete_package $k;	2054	Symbol::delete_package $k;
1063	}	2055	}
1064		2056
1065	# sync database to disk	2057	# sync database to disk
1066	cf::db_sync;	2058	cf::db_sync;
		2059	IO::AIO::flush;
1067		2060
1068	# get rid of safe::, as good as possible	2061	# get rid of safe::, as good as possible
1069	Symbol::delete_package "safe::$_"	2062	Symbol::delete_package "safe::$_"
1070	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2063	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1071		2064
1072	# remove register_script_function callbacks	2065	# remove register_script_function callbacks
1073	# TODO	2066	# TODO
1074		2067
1075	# unload cf.pm "a bit"	2068	# unload cf.pm "a bit"
…		…
1078	# don't, removes xs symbols, too,	2071	# don't, removes xs symbols, too,
1079	# and global variables created in xs	2072	# and global variables created in xs
1080	#Symbol::delete_package __PACKAGE__;	2073	#Symbol::delete_package __PACKAGE__;
1081		2074
1082	# reload cf.pm	2075	# reload cf.pm
1083	$msg->("reloading cf.pm");	2076	warn "reloading cf.pm";
1084	require cf;	2077	require cf;
		2078	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1085		2079
1086	# load database again	2080	# load config and database again
		2081	cf::cfg_load;
1087	cf::db_load;	2082	cf::db_load;
1088		2083
1089	# load extensions	2084	# load extensions
1090	$msg->("load extensions");	2085	warn "load extensions";
1091	cf::load_extensions;	2086	cf::load_extensions;
1092		2087
1093	# reattach attachments to objects	2088	# reattach attachments to objects
1094	$msg->("reattach");	2089	warn "reattach";
1095	_global_reattach;	2090	_global_reattach;
1096	};	2091	};
1097	$msg->($@) if $@;
1098		2092
1099	$msg->("reloaded");	2093	if ($@) {
		2094	warn $@;
		2095	warn "error while reloading, exiting.";
		2096	exit 1;
		2097	}
		2098
		2099	warn "reloaded successfully";
1100	};	2100	};
1101		2101
1102	sub perl_reload() {	2102	#############################################################################
1103	_perl_reload {
1104	warn $_[0];
1105	print "$_[0]\n";
1106	};
1107	}
1108		2103
		2104	unless ($LINK_MAP) {
		2105	$LINK_MAP = cf::map::new;
		2106
		2107	$LINK_MAP->width (41);
		2108	$LINK_MAP->height (41);
		2109	$LINK_MAP->alloc;
		2110	$LINK_MAP->path ("{link}");
		2111	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2112	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2113
		2114	# dirty hack because... archetypes are not yet loaded
		2115	Event->timer (
		2116	after => 2,
		2117	cb => sub {
		2118	$_[0]->w->cancel;
		2119
		2120	# provide some exits "home"
		2121	my $exit = cf::object::new "exit";
		2122
		2123	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2124	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2125	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2126
		2127	$LINK_MAP->insert ($exit->clone, 19, 19);
		2128	$LINK_MAP->insert ($exit->clone, 19, 20);
		2129	$LINK_MAP->insert ($exit->clone, 19, 21);
		2130	$LINK_MAP->insert ($exit->clone, 20, 19);
		2131	$LINK_MAP->insert ($exit->clone, 20, 21);
		2132	$LINK_MAP->insert ($exit->clone, 21, 19);
		2133	$LINK_MAP->insert ($exit->clone, 21, 20);
		2134	$LINK_MAP->insert ($exit->clone, 21, 21);
		2135
		2136	$exit->destroy;
		2137	});
		2138
		2139	$LINK_MAP->{deny_save} = 1;
		2140	$LINK_MAP->{deny_reset} = 1;
		2141
		2142	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2143	}
		2144
		2145	register "<global>", __PACKAGE__;
		2146
1109	register_command "perl-reload", 0, sub {	2147	register_command "reload" => sub {
1110	my ($who, $arg) = @_;	2148	my ($who, $arg) = @_;
1111		2149
1112	if ($who->flag (FLAG_WIZ)) {	2150	if ($who->flag (FLAG_WIZ)) {
1113	_perl_reload {	2151	$who->message ("start of reload.");
1114	warn $_[0];	2152	reload;
1115	$who->message ($_[0]);	2153	$who->message ("end of reload.");
1116	};
1117	}	2154	}
1118	};	2155	};
1119		2156
1120	register "<global>", __PACKAGE__;
1121
1122	unshift @INC, $LIBDIR;	2157	unshift @INC, $LIBDIR;
1123		2158
1124	$TICK_WATCHER = Event->timer (	2159	$TICK_WATCHER = Event->timer (
		2160	reentrant => 0,
1125	prio => 1,	2161	prio => 0,
1126	at => $NEXT_TICK || 1,	2162	at => $NEXT_TICK || $TICK,
		2163	data => WF_AUTOCANCEL,
1127	cb => sub {	2164	cb => sub {
		2165	unless ($FREEZE) {
1128	cf::server_tick; # one server iteration	2166	cf::server_tick; # one server iteration
		2167	$RUNTIME += $TICK;
		2168	}
1129		2169
1130	my $NOW = Event::time;
1131	$NEXT_TICK += $TICK;	2170	$NEXT_TICK += $TICK;
1132		2171
1133	# if we are delayed by four ticks, skip them all	2172	# if we are delayed by four ticks or more, skip them all
1134	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2173	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1135		2174
1136	$TICK_WATCHER->at ($NEXT_TICK);	2175	$TICK_WATCHER->at ($NEXT_TICK);
1137	$TICK_WATCHER->start;	2176	$TICK_WATCHER->start;
1138	},	2177	},
1139	);	2178	);
1140		2179
		2180	IO::AIO::max_poll_time $TICK * 0.2;
		2181
		2182	Event->io (
		2183	fd => IO::AIO::poll_fileno,
		2184	poll => 'r',
		2185	prio => 5,
		2186	data => WF_AUTOCANCEL,
		2187	cb => \&IO::AIO::poll_cb,
		2188	);
		2189
		2190	Event->timer (
		2191	data => WF_AUTOCANCEL,
		2192	after => 0,
		2193	interval => 10,
		2194	cb => sub {
		2195	(Coro::unblock_sub {
		2196	write_runtime
		2197	or warn "ERROR: unable to write runtime file: $!";
		2198	})->();
		2199	},
		2200	);
		2201
		2202	END { cf::emergency_save }
		2203
1141	1	2204	1
1142		2205

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