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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.54 by root, Tue Aug 29 14:49:28 2006 UTC vs.
Revision 1.110 by root, Mon Jan 1 11:21:55 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	_reload_1;	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 %PROP_TYPE;	40	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		41
24	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	43	our $TICK_WATCHER;
26	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
		46
		47	our %CFG;
		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $FREEZE;
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO;
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76
		77	our $EMERGENCY_POSITION = $cf::CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		78
		79	#############################################################################
		80
		81	=head2 GLOBAL VARIABLES
		82
		83	=over 4
		84
		85	=item $cf::UPTIME
		86
		87	The timestamp of the server start (so not actually an uptime).
		88
		89	=item $cf::RUNTIME
		90
		91	The time this server has run, starts at 0 and is increased by $cf::TICK on
		92	every server tick.
		93
		94	=item $cf::LIBDIR
		95
		96	The perl library directory, where extensions and cf-specific modules can
		97	be found. It will be added to C<@INC> automatically.
		98
		99	=item $cf::NOW
		100
		101	The time of the last (current) server tick.
		102
		103	=item $cf::TICK
		104
		105	The interval between server ticks, in seconds.
		106
		107	=item %cf::CFG
		108
		109	Configuration for the server, loaded from C</etc/crossfire/config>, or
		110	from wherever your confdir points to.
		111
		112	=back
		113
		114	=cut
27		115
28	BEGIN {	116	BEGIN {
29	*CORE::GLOBAL::warn = sub {	117	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	118	my $msg = join "", @_;
		119	utf8::encode $msg;
		120
31	$msg .= "\n"	121	$msg .= "\n"
32	unless $msg =~ /\n$/;	122	unless $msg =~ /\n$/;
33		123
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	124	LOG llevError, "cfperl: $msg";
36	};	125	};
37	}	126	}
38		127
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	128	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		129	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	130	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	131	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	132	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	133	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		134
75	# 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
76	# within the Safe compartment.	136	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	137	for my $pkg (qw(
		138	cf::global cf::attachable
		139	cf::object cf::object::player
		140	cf::client cf::player
		141	cf::arch cf::living
		142	cf::map cf::party cf::region
		143	)) {
78	no strict 'refs';	144	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	145	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	146	}
81		147
82	$Event::DIED = sub {	148	$Event::DIED = sub {
…		…
84	};	150	};
85		151
86	my %ext_pkg;	152	my %ext_pkg;
87	my @exts;	153	my @exts;
88	my @hook;	154	my @hook;
89	my %command;
90	my %extcmd;
91		155
92	#############################################################################	156	=head2 UTILITY FUNCTIONS
93	# utility functions	157
		158	=over 4
		159
		160	=cut
94		161
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	162	use JSON::Syck (); # TODO# replace by JSON::PC once working
		163
		164	=item $ref = cf::from_json $json
		165
		166	Converts a JSON string into the corresponding perl data structure.
		167
		168	=cut
96		169
97	sub from_json($) {	170	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	171	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	172	JSON::Syck::Load $_[0]
100	}	173	}
101		174
		175	=item $json = cf::to_json $ref
		176
		177	Converts a perl data structure into its JSON representation.
		178
		179	=cut
		180
102	sub to_json($) {	181	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	182	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	183	JSON::Syck::Dump $_[0]
105	}	184	}
106		185
		186	=item cf::sync_job { BLOCK }
		187
		188	The design of crossfire+ requires that the main coro ($Coro::main) is
		189	always able to handle events or runnable, as crossfire+ is only partly
		190	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		191
		192	If it must be done, put the blocking parts into C<sync_job>. This will run
		193	the given BLOCK in another coroutine while waiting for the result. The
		194	server will be frozen during this time, so the block should either finish
		195	fast or be very important.
		196
		197	=cut
		198
		199	sub sync_job(&) {
		200	my ($job) = @_;
		201
		202	my $busy = 1;
		203	my @res;
		204
		205	my $coro = Coro::async {
		206	@res = eval { $job->() };
		207	warn $@ if $@;
		208	undef $busy;
		209	};
		210
		211	if ($Coro::current == $Coro::main) {
		212	# TODO: use suspend/resume instead
		213	local $FREEZE = 1;
		214	$coro->prio (Coro::PRIO_MAX);
		215	while ($busy) {
		216	Coro::cede_notself;
		217	Event::one_event unless Coro::nready;
		218	}
		219	} else {
		220	$coro->join;
		221	}
		222
		223	wantarray ? @res : $res[0]
		224	}
		225
		226	=item $coro = cf::coro { BLOCK }
		227
		228	Creates and returns a new coro. This coro is automcatially being canceled
		229	when the extension calling this is being unloaded.
		230
		231	=cut
		232
		233	sub coro(&) {
		234	my $cb = shift;
		235
		236	my $coro; $coro = async {
		237	eval {
		238	$cb->();
		239	};
		240	warn $@ if $@;
		241	};
		242
		243	$coro->on_destroy (sub {
		244	delete $EXT_CORO{$coro+0};
		245	});
		246	$EXT_CORO{$coro+0} = $coro;
		247
		248	$coro
		249	}
		250
		251	sub write_runtime {
		252	my $runtime = cf::localdir . "/runtime";
		253
		254	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		255	or return;
		256
		257	my $value = $cf::RUNTIME;
		258	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		259	and return;
		260
		261	aio_fsync $fh
		262	and return;
		263
		264	close $fh
		265	or return;
		266
		267	aio_rename "$runtime~", $runtime
		268	and return;
		269
		270	1
		271	}
		272
		273	=back
		274
		275	=cut
		276
107	#############################################################################	277	#############################################################################
108	# "new" plug-in system
109		278
110	=item $object->attach ($attachment, key => $value...)	279	package cf::path;
111		280
112	=item $object->detach ($attachment)	281	sub new {
		282	my ($class, $path, $base) = @_;
113		283
114	Attach/detach a pre-registered attachment to an object.	284	$path = $path->as_string if ref $path;
115		285
116	=item $player->attach ($attachment, key => $value...)	286	my $self = bless { }, $class;
117		287
118	=item $player->detach ($attachment)	288	if ($path =~ s{^\?random/}{}) {
		289	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		290	$self->{random} = cf::from_json $data;
		291	} else {
		292	if ($path =~ s{^~([^/]+)?}{}) {
		293	$self->{user_rel} = 1;
119		294
120	Attach/detach a pre-registered attachment to a player.	295	if (defined $1) {
		296	$self->{user} = $1;
		297	} elsif ($base =~ m{^~([^/]+)/}) {
		298	$self->{user} = $1;
		299	} else {
		300	warn "cannot resolve user-relative path without user <$path,$base>\n";
		301	}
		302	} elsif ($path =~ /^\//) {
		303	# already absolute
		304	} else {
		305	$base =~ s{[^/]+/?$}{};
		306	return $class->new ("$base/$path");
		307	}
121		308
		309	for ($path) {
		310	redo if s{/\.?/}{/};
		311	redo if s{/[^/]+/\.\./}{/};
		312	}
		313	}
		314
		315	$self->{path} = $path;
		316
		317	$self
		318	}
		319
		320	# the name / primary key / in-game path
		321	sub as_string {
		322	my ($self) = @_;
		323
		324	$self->{user_rel} ? "~$self->{user}$self->{path}"
		325	: $self->{random} ? "?random/$self->{path}"
		326	: $self->{path}
		327	}
		328
		329	# the displayed name, this is a one way mapping
		330	sub visible_name {
		331	my ($self) = @_;
		332
		333	# if (my $rmp = $self->{random}) {
		334	# # todo: be more intelligent about this
		335	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		336	# } else {
		337	$self->as_string
		338	# }
		339	}
		340
		341	# escape the /'s in the path
		342	sub _escaped_path {
		343	# ∕ is U+2215
		344	(my $path = $_[0]{path}) =~ s/\//∕/g;
		345	$path
		346	}
		347
		348	# the original (read-only) location
		349	sub load_path {
		350	my ($self) = @_;
		351
		352	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		353	}
		354
		355	# the temporary/swap location
		356	sub save_path {
		357	my ($self) = @_;
		358
		359	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		360	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		361	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		362	}
		363
		364	# the unique path, might be eq to save_path
		365	sub uniq_path {
		366	my ($self) = @_;
		367
		368	$self->{user_rel} || $self->{random}
		369	? undef
		370	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		371	}
		372
		373	# return random map parameters, or undef
		374	sub random_map_params {
		375	my ($self) = @_;
		376
		377	$self->{random}
		378	}
		379
		380	# this is somewhat ugly, but style maps do need special treatment
		381	sub is_style_map {
		382	$_[0]{path} =~ m{^/styles/}
		383	}
		384
		385	package cf;
		386
		387	#############################################################################
		388
		389	=head2 ATTACHABLE OBJECTS
		390
		391	Many objects in crossfire are so-called attachable objects. That means you can
		392	attach callbacks/event handlers (a collection of which is called an "attachment")
		393	to it. All such attachable objects support the following methods.
		394
		395	In the following description, CLASS can be any of C<global>, C<object>
		396	C<player>, C<client> or C<map> (i.e. the attachable objects in
		397	crossfire+).
		398
		399	=over 4
		400
122	=item $map->attach ($attachment, key => $value...)	401	=item $attachable->attach ($attachment, key => $value...)
123		402
124	=item $map->detach ($attachment)	403	=item $attachable->detach ($attachment)
125		404
126	Attach/detach a pre-registered attachment to a map.	405	Attach/detach a pre-registered attachment to a specific object and give it
		406	the specified key/value pairs as arguments.
127		407
128	=item cf::attach_global ...	408	Example, attach a minesweeper attachment to the given object, making it a
		409	10x10 minesweeper game:
129		410
130	Attach handlers for global events.	411	$obj->attach (minesweeper => width => 10, height => 10);
131		412
132	This and all following C<attach_*>-functions expect any number of the	413	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	414
		415	Checks wether the named attachment is currently attached to the object.
		416
		417	=item cf::CLASS->attach ...
		418
		419	=item cf::CLASS->detach ...
		420
		421	Define an anonymous attachment and attach it to all objects of the given
		422	CLASS. See the next function for an explanation of its arguments.
		423
		424	You can attach to global events by using the C<cf::global> class.
		425
		426	Example, log all player logins:
		427
		428	cf::player->attach (
		429	on_login => sub {
		430	my ($pl) = @_;
		431	...
		432	},
		433	);
		434
		435	Example, attach to the jeweler skill:
		436
		437	cf::object->attach (
		438	type => cf::SKILL,
		439	subtype => cf::SK_JEWELER,
		440	on_use_skill => sub {
		441	my ($sk, $ob, $part, $dir, $msg) = @_;
		442	...
		443	},
		444	);
		445
		446	=item cf::CLASS::attachment $name, ...
		447
		448	Register an attachment by C<$name> through which attachable objects of the
		449	given CLASS can refer to this attachment.
		450
		451	Some classes such as crossfire maps and objects can specify attachments
		452	that are attached at load/instantiate time, thus the need for a name.
		453
		454	These calls expect any number of the following handler/hook descriptions:
134		455
135	=over 4	456	=over 4
136		457
137	=item prio => $number	458	=item prio => $number
138		459
…		…
140	by another C<prio> setting). Lower priority handlers get executed	461	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	462	earlier. The default priority is C<0>, and many built-in handlers are
142	registered at priority C<-1000>, so lower priorities should not be used	463	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	464	unless you know what you are doing.
144		465
		466	=item type => $type
		467
		468	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		469	given type of objects only (the additional parameter C<subtype> can be
		470	used to further limit to the given subtype).
		471
145	=item on_I<event> => \&cb	472	=item on_I<event> => \&cb
146		473
147	Call the given code reference whenever the named event happens (event is	474	Call the given code reference whenever the named event happens (event is
148	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	475	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
149	handlers are recognised generally depends on the type of object these	476	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	485	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	486	object/class are recognised.
160		487
161	=back	488	=back
162		489
163	=item cf::attach_to_type $object_type, $subtype, ...	490	Example, define an attachment called "sockpuppet" that calls the given
		491	event handler when a monster attacks:
164		492
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	493	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	494	on_skill_attack => sub {
167	type.	495	my ($self, $victim) = @_;
		496	...
		497	}
		498	}
168		499
169	=item cf::attach_to_objects ...	500	=item $attachable->valid
170		501
171	Attach handlers to all objects. Do not use this except for debugging or	502	Just because you have a perl object does not mean that the corresponding
172	very rare events, as handlers are (obviously) called for I<all> objects in	503	C-level object still exists. If you try to access an object that has no
173	the game.	504	valid C counterpart anymore you get an exception at runtime. This method
174		505	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	506	exception.
176
177	Attach handlers to all players.
178
179	=item cf::attach_to_maps ...
180
181	Attach handlers to all maps.
182
183	=item cf:register_attachment $name, ...
184
185	Register an attachment by name through which objects can refer to this
186	attachment.
187
188	=item cf:register_map_attachment $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		507
193	=cut	508	=cut
194		509
195	# the following variables are defined in .xs and must not be re-created	510	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	511	our @CB_GLOBAL = (); # registry for all global events
		512	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	513	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	514	our @CB_PLAYER = ();
		515	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	516	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	517	our @CB_MAP = ();
201		518
202	my %attachment;	519	my %attachment;
203		520
204	sub _attach_cb($\%$$$) {	521	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	522	my ($registry, $event, $prio, $cb) = @_;
206		523
207	use sort 'stable';	524	use sort 'stable';
208		525
209	$cb = [$prio, $cb];	526	$cb = [$prio, $cb];
210		527
211	@{$registry->[$event]} = sort	528	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	529	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	530	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	531	}
		532
		533	# hack
		534	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		535
218	# attach handles attaching event callbacks	536	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	537	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	538	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	539	sub _attach {
222	my ($registry, $klass, @arg) = @_;	540	my ($registry, $klass, @arg) = @_;
223		541
		542	my $object_type;
224	my $prio = 0;	543	my $prio = 0;
225
226	my %undo = (
227	registry => $registry,
228	cb => [],
229	);
230
231	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	544	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		545
		546	#TODO: get rid of this hack
		547	if ($attachable_klass{$klass}) {
		548	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		549	}
232		550
233	while (@arg) {	551	while (@arg) {
234	my $type = shift @arg;	552	my $type = shift @arg;
235		553
236	if ($type eq "prio") {	554	if ($type eq "prio") {
237	$prio = shift @arg;	555	$prio = shift @arg;
238		556
		557	} elsif ($type eq "type") {
		558	$object_type = shift @arg;
		559	$registry = $CB_TYPE[$object_type] ||= [];
		560
		561	} elsif ($type eq "subtype") {
		562	defined $object_type or Carp::croak "subtype specified without type";
		563	my $object_subtype = shift @arg;
		564	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		565
239	} elsif ($type eq "package") {	566	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	567	my $pkg = shift @arg;
241		568
242	while (my ($name, $id) = each %cb_id) {	569	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	570	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	571	_attach_cb $registry, $id, $prio, $cb;
245	}	572	}
246	}	573	}
247		574
248	} elsif (exists $cb_id{$type}) {	575	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	576	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		577
251	} elsif (ref $type) {	578	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	579	warn "attaching objects not supported, ignoring.\n";
253		580
254	} else {	581	} else {
255	shift @arg;	582	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	583	warn "attach argument '$type' not supported, ignoring.\n";
257	}	584	}
258	}	585	}
259
260	\%undo
261	}	586	}
262		587
263	sub _attach_attachment {	588	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	589	my ($obj, $name, %arg) = @_;
265		590
266	my $res;	591	return if exists $obj->{_attachment}{$name};
267		592
268	if (my $attach = $attachment{$name}) {	593	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	594	my $registry = $obj->registry;
270		595
271	for (@$attach) {	596	for (@$attach) {
272	my ($klass, @attach) = @$_;	597	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	598	_attach $registry, $klass, @attach;
274	}	599	}
275		600
276	$obj->{$name} = \%arg;	601	$obj->{$name} = \%arg;
277	} else {	602	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	603	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	604	}
280		605
281	$obj->{_attachment}{$name} = undef;	606	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	607	}
286		608
287	*cf::object::attach =	609	sub cf::attachable::attach {
288	*cf::player::attach =	610	if (ref $_[0]) {
289	*cf::map::attach = sub {	611	_object_attach @_;
290	my ($obj, $name, %arg) = @_;	612	} else {
291		613	_attach shift->_attach_registry, @_;
292	_attach_attachment $obj, $name, %arg;	614	}
293	}	615	};
294		616
295	# all those should be optimised	617	# all those should be optimised
296	*cf::object::detach =	618	sub cf::attachable::detach {
297	*cf::player::detach =
298	*cf::map::detach = sub {
299	my ($obj, $name) = @_;	619	my ($obj, $name) = @_;
300		620
		621	if (ref $obj) {
301	delete $obj->{_attachment}{$name};	622	delete $obj->{_attachment}{$name};
302	reattach $obj;	623	reattach ($obj);
		624	} else {
		625	Carp::croak "cannot, currently, detach class attachments";
		626	}
303	};	627	};
304		628
305	sub attach_global {	629	sub cf::attachable::attached {
306	_attach @CB_GLOBAL, KLASS_GLOBAL, @_	630	my ($obj, $name) = @_;
307	}
308		631
309	sub attach_to_type {	632	exists $obj->{_attachment}{$name}
310	my $type = shift;
311	my $subtype = shift;
312
313	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
314	}	633	}
315		634
316	sub attach_to_objects {	635	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
317	_attach @CB_OBJECT, KLASS_OBJECT, @_	636	eval "#line " . __LINE__ . " 'cf.pm'
318	}	637	sub cf::\L$klass\E::_attach_registry {
		638	(\\\@CB_$klass, KLASS_$klass)
		639	}
319		640
320	sub attach_to_players {	641	sub cf::\L$klass\E::attachment {
321	_attach @CB_PLAYER, KLASS_PLAYER, @_
322	}
323
324	sub attach_to_maps {
325	_attach @CB_MAP, KLASS_MAP, @_
326	}
327
328	sub register_attachment {
329	my $name = shift;	642	my \$name = shift;
330		643
331	$attachment{$name} = [[KLASS_OBJECT, @_]];
332	}
333
334	sub register_map_attachment {
335	my $name = shift;
336
337	$attachment{$name} = [[KLASS_MAP, @_]];	644	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		645	}
		646	";
		647	die if $@;
338	}	648	}
339		649
340	our $override;	650	our $override;
341	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	651	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
342		652
…		…
356	for (@$callbacks) {	666	for (@$callbacks) {
357	eval { &{$_->[1]} };	667	eval { &{$_->[1]} };
358		668
359	if ($@) {	669	if ($@) {
360	warn "$@";	670	warn "$@";
361	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	671	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
362	override;	672	override;
363	}	673	}
364		674
365	return 1 if $override;	675	return 1 if $override;
366	}	676	}
367		677
368	0	678	0
369	}	679	}
		680
		681	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		682
		683	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		684
		685	Generate an object-specific event with the given arguments.
		686
		687	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		688	removed in future versions), and there is no public API to access override
		689	results (if you must, access C<@cf::invoke_results> directly).
		690
		691	=back
		692
		693	=cut
370		694
371	#############################################################################	695	#############################################################################
372	# object support	696	# object support
373		697
374	sub instantiate {
375	my ($obj, $data) = @_;
376
377	$data = from_json $data;
378
379	for (@$data) {
380	my ($name, $args) = @$_;
381
382	$obj->attach ($name, %{$args || {} });
383	}
384	}
385
386	# basically do the same as instantiate, without calling instantiate
387	sub reattach {	698	sub reattach {
		699	# basically do the same as instantiate, without calling instantiate
388	my ($obj) = @_;	700	my ($obj) = @_;
		701
389	my $registry = $obj->registry;	702	my $registry = $obj->registry;
390		703
391	@$registry = ();	704	@$registry = ();
392		705
393	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	706	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
394		707
395	for my $name (keys %{ $obj->{_attachment} || {} }) {	708	for my $name (keys %{ $obj->{_attachment} || {} }) {
396	if (my $attach = $attachment{$name}) {	709	if (my $attach = $attachment{$name}) {
397	for (@$attach) {	710	for (@$attach) {
398	my ($klass, @attach) = @$_;	711	my ($klass, @attach) = @$_;
399	_attach @$registry, $klass, @attach;	712	_attach $registry, $klass, @attach;
400	}	713	}
401	} else {	714	} else {
402	warn "object uses attachment '$name' that is not available, postponing.\n";	715	warn "object uses attachment '$name' that is not available, postponing.\n";
403	}	716	}
404	}	717	}
405	}	718	}
406		719
407	sub object_freezer_save {	720	cf::attachable->attach (
408	my ($filename, $objs) = @_;
409
410	if (@$objs) {
411	open my $fh, ">:raw", "$filename.pst~";
412	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
413	close $fh;
414	chmod SAVE_MODE, "$filename.pst~";
415	rename "$filename.pst~", "$filename.pst";
416	} else {
417	unlink "$filename.pst";
418	}
419
420	chmod SAVE_MODE, "$filename~";
421	rename "$filename~", $filename;
422	}
423
424	sub object_thawer_load {
425	my ($filename) = @_;
426
427	open my $fh, "<:raw:perlio", "$filename.pst"
428	or return;
429
430	eval { local $/; (Storable::thaw <$fh>)->{objs} }
431	}
432
433	attach_to_objects
434	prio => -1000000,	721	prio => -1000000,
		722	on_instantiate => sub {
		723	my ($obj, $data) = @_;
		724
		725	$data = from_json $data;
		726
		727	for (@$data) {
		728	my ($name, $args) = @$_;
		729
		730	$obj->attach ($name, %{$args || {} });
		731	}
		732	},
		733	on_reattach => \&reattach,
435	on_clone => sub {	734	on_clone => sub {
436	my ($src, $dst) = @_;	735	my ($src, $dst) = @_;
437		736
438	@{$dst->registry} = @{$src->registry};	737	@{$dst->registry} = @{$src->registry};
439		738
440	%$dst = %$src;	739	%$dst = %$src;
441		740
442	%{$dst->{_attachment}} = %{$src->{_attachment}}	741	%{$dst->{_attachment}} = %{$src->{_attachment}}
443	if exists $src->{_attachment};	742	if exists $src->{_attachment};
444	},	743	},
445	;	744	);
		745
		746	sub object_freezer_save {
		747	my ($filename, $rdata, $objs) = @_;
		748
		749	sync_job {
		750	if (length $$rdata) {
		751	warn sprintf "saving %s (%d,%d)\n",
		752	$filename, length $$rdata, scalar @$objs;
		753
		754	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		755	chmod SAVE_MODE, $fh;
		756	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		757	aio_fsync $fh;
		758	close $fh;
		759
		760	if (@$objs) {
		761	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		762	chmod SAVE_MODE, $fh;
		763	my $data = Storable::nfreeze { version => 1, objs => $objs };
		764	aio_write $fh, 0, (length $data), $data, 0;
		765	aio_fsync $fh;
		766	close $fh;
		767	aio_rename "$filename.pst~", "$filename.pst";
		768	}
		769	} else {
		770	aio_unlink "$filename.pst";
		771	}
		772
		773	aio_rename "$filename~", $filename;
		774	} else {
		775	warn "FATAL: $filename~: $!\n";
		776	}
		777	} else {
		778	aio_unlink $filename;
		779	aio_unlink "$filename.pst";
		780	}
		781	}
		782	}
		783
		784	sub object_freezer_as_string {
		785	my ($rdata, $objs) = @_;
		786
		787	use Data::Dumper;
		788
		789	$$rdata . Dumper $objs
		790	}
		791
		792	sub object_thawer_load {
		793	my ($filename) = @_;
		794
		795	my ($data, $av);
		796
		797	(aio_load $filename, $data) >= 0
		798	or return;
		799
		800	unless (aio_stat "$filename.pst") {
		801	(aio_load "$filename.pst", $av) >= 0
		802	or return;
		803	$av = eval { (Storable::thaw <$av>)->{objs} };
		804	}
		805
		806	return ($data, $av);
		807	}
446		808
447	#############################################################################	809	#############################################################################
448	# old plug-in events	810	# command handling &c
449		811
450	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
451	my $extension = shift;
452	my $event_code = shift;
453		813
454	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
455	or return;	815	$name.
456		816
457	&$cb	817	=cut
458	}
459
460	sub inject_global_event {
461	my $event = shift;
462
463	my $cb = $hook[$event]
464	or return;
465
466	List::Util::max map &$_, values %$cb
467	}
468
469	sub inject_command {
470	my ($name, $obj, $params) = @_;
471
472	for my $cmd (@{ $command{$name} }) {
473	$cmd->[1]->($obj, $params);
474	}
475
476	-1
477	}
478		818
479	sub register_command {	819	sub register_command {
480	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
481		821
482	my $caller = caller;	822	my $caller = caller;
483	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
484		824
485	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
486	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
487	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
488		836
489	sub register_extcmd {	837	sub register_extcmd {
490	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
491		839
492	my $caller = caller;	840	my $caller = caller;
493	#warn "registering extcmd '$name' to '$caller'";	841	#warn "registering extcmd '$name' to '$caller'";
494		842
495	$extcmd{$name} = [$cb, $caller];	843	$EXTCMD{$name} = [$cb, $caller];
496	}	844	}
		845
		846	cf::player->attach (
		847	on_command => sub {
		848	my ($pl, $name, $params) = @_;
		849
		850	my $cb = $COMMAND{$name}
		851	or return;
		852
		853	for my $cmd (@$cb) {
		854	$cmd->[1]->($pl->ob, $params);
		855	}
		856
		857	cf::override;
		858	},
		859	on_extcmd => sub {
		860	my ($pl, $buf) = @_;
		861
		862	my $msg = eval { from_json $buf };
		863
		864	if (ref $msg) {
		865	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		866	if (my %reply = $cb->[0]->($pl, $msg)) {
		867	$pl->ext_reply ($msg->{msgid}, %reply);
		868	}
		869	}
		870	} else {
		871	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		872	}
		873
		874	cf::override;
		875	},
		876	);
497		877
498	sub register {	878	sub register {
499	my ($base, $pkg) = @_;	879	my ($base, $pkg) = @_;
500		880
501	#TODO	881	#TODO
…		…
520	. "#line 1 \"$path\"\n{\n"	900	. "#line 1 \"$path\"\n{\n"
521	. (do { local $/; <$fh> })	901	. (do { local $/; <$fh> })
522	. "\n};\n1";	902	. "\n};\n1";
523		903
524	eval $source	904	eval $source
525	or die "$path: $@";	905	or die $@ ? "$path: $@\n"
		906	: "extension disabled.\n";
526		907
527	push @exts, $pkg;	908	push @exts, $pkg;
528	$ext_pkg{$base} = $pkg;	909	$ext_pkg{$base} = $pkg;
529		910
530	# no strict 'refs';	911	# no strict 'refs';
…		…
543	# for my $idx (0 .. $#PLUGIN_EVENT) {	924	# for my $idx (0 .. $#PLUGIN_EVENT) {
544	# delete $hook[$idx]{$pkg};	925	# delete $hook[$idx]{$pkg};
545	# }	926	# }
546		927
547	# remove commands	928	# remove commands
548	for my $name (keys %command) {	929	for my $name (keys %COMMAND) {
549	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	930	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
550		931
551	if (@cb) {	932	if (@cb) {
552	$command{$name} = \@cb;	933	$COMMAND{$name} = \@cb;
553	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
554	} else {	934	} else {
555	delete $command{$name};
556	delete $COMMAND{"$name\000"};	935	delete $COMMAND{$name};
557	}	936	}
558	}	937	}
559		938
560	# remove extcmds	939	# remove extcmds
561	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	940	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
562	delete $extcmd{$name};	941	delete $EXTCMD{$name};
563	}	942	}
564		943
565	if (my $cb = $pkg->can ("unload")) {	944	if (my $cb = $pkg->can ("unload")) {
566	eval {	945	eval {
567	$cb->($pkg);	946	$cb->($pkg);
…		…
571		950
572	Symbol::delete_package $pkg;	951	Symbol::delete_package $pkg;
573	}	952	}
574		953
575	sub load_extensions {	954	sub load_extensions {
576	my $LIBDIR = maps_directory "perl";
577
578	for my $ext (<$LIBDIR/*.ext>) {	955	for my $ext (<$LIBDIR/*.ext>) {
579	next unless -r $ext;	956	next unless -r $ext;
580	eval {	957	eval {
581	load_extension $ext;	958	load_extension $ext;
582	1	959	1
583	} or warn "$ext not loaded: $@";	960	} or warn "$ext not loaded: $@";
584	}	961	}
585	}	962	}
586		963
587	sub _perl_reload(&) {
588	my ($msg) = @_;
589
590	$msg->("reloading...");
591
592	eval {
593	# 1. cancel all watchers
594	$_->cancel for Event::all_watchers;
595
596	# 2. unload all extensions
597	for (@exts) {
598	$msg->("unloading <$_>");
599	unload_extension $_;
600	}
601
602	# 3. unload all modules loaded from $LIBDIR
603	while (my ($k, $v) = each %INC) {
604	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
605
606	$msg->("removing <$k>");
607	delete $INC{$k};
608
609	$k =~ s/\.pm$//;
610	$k =~ s/\//::/g;
611
612	if (my $cb = $k->can ("unload_module")) {
613	$cb->();
614	}
615
616	Symbol::delete_package $k;
617	}
618
619	# 4. get rid of safe::, as good as possible
620	Symbol::delete_package "safe::$_"
621	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
622
623	# 5. remove register_script_function callbacks
624	# TODO
625
626	# 6. unload cf.pm "a bit"
627	delete $INC{"cf.pm"};
628
629	# don't, removes xs symbols, too,
630	# and global variables created in xs
631	#Symbol::delete_package __PACKAGE__;
632
633	# 7. reload cf.pm
634	$msg->("reloading cf.pm");
635	require cf;
636	};
637	$msg->($@) if $@;
638
639	$msg->("reloaded");
640	};
641
642	sub perl_reload() {
643	_perl_reload {
644	warn $_[0];
645	print "$_[0]\n";
646	};
647	}
648
649	register_command "perl-reload", 0, sub {
650	my ($who, $arg) = @_;
651
652	if ($who->flag (FLAG_WIZ)) {
653	_perl_reload {
654	warn $_[0];
655	$who->message ($_[0]);
656	};
657	}
658	};
659
660	#############################################################################
661	# extcmd framework, basically convert ext <msg>
662	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
663
664	attach_to_players
665	on_extcmd => sub {
666	my ($pl, $buf) = @_;
667
668	my $msg = eval { from_json $buf };
669
670	if (ref $msg) {
671	if (my $cb = $extcmd{$msg->{msgtype}}) {
672	if (my %reply = $cb->[0]->($pl, $msg)) {
673	$pl->ext_reply ($msg->{msgid}, %reply);
674	}
675	}
676	} else {
677	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
678	}
679
680	cf::override;
681	},
682	;
683
684	#############################################################################	964	#############################################################################
685	# load/save/clean perl data associated with a map	965	# load/save/clean perl data associated with a map
686		966
687	*cf::mapsupport::on_clean = sub {	967	*cf::mapsupport::on_clean = sub {
688	my ($map) = @_;	968	my ($map) = @_;
…		…
691	defined $path or return;	971	defined $path or return;
692		972
693	unlink "$path.pst";	973	unlink "$path.pst";
694	};	974	};
695		975
696	# old style persistent data, TODO: remove #d#
697	*cf::mapsupport::on_swapin =
698	*cf::mapsupport::on_load = sub {
699	my ($map) = @_;
700
701	my $path = $map->tmpname;
702	$path = $map->path unless defined $path;
703
704	open my $fh, "<:raw", "$path.cfperl"
705	or return; # no perl data
706
707	my $data = Storable::thaw do { local $/; <$fh> };
708
709	$data->{version} <= 1
710	or return; # too new
711
712	$map->_set_obs ($data->{obs});
713	$map->invoke (EVENT_MAP_UPGRADE);
714	};
715
716	attach_to_maps prio => -10000, package => cf::mapsupport::;	976	cf::map->attach (prio => -10000, package => cf::mapsupport::);
717		977
718	#############################################################################	978	#############################################################################
719	# load/save perl data associated with player->ob objects	979	# load/save perl data associated with player->ob objects
720		980
721	sub all_objects(@) {	981	sub all_objects(@) {
722	@_, map all_objects ($_->inv), @_	982	@_, map all_objects ($_->inv), @_
723	}	983	}
724		984
725	attach_to_players	985	# TODO: compatibility cruft, remove when no longer needed
		986	cf::player->attach (
726	on_load => sub {	987	on_load => sub {
727	my ($pl, $path) = @_;	988	my ($pl, $path) = @_;
728		989
729	for my $o (all_objects $pl->ob) {	990	for my $o (all_objects $pl->ob) {
730	if (my $value = $o->get_ob_key_value ("_perl_data")) {	991	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
732		993
733	%$o = %{ Storable::thaw pack "H*", $value };	994	%$o = %{ Storable::thaw pack "H*", $value };
734	}	995	}
735	}	996	}
736	},	997	},
737	;	998	);
738		999
739	#############################################################################	1000	#############################################################################
740	# core extensions - in perl	1001
		1002	=head2 CORE EXTENSIONS
		1003
		1004	Functions and methods that extend core crossfire objects.
		1005
		1006	=head3 cf::player
		1007
		1008	=over 4
741		1009
742	=item cf::player::exists $login	1010	=item cf::player::exists $login
743		1011
744	Returns true when the given account exists.	1012	Returns true when the given account exists.
745		1013
…		…
748	sub cf::player::exists($) {	1016	sub cf::player::exists($) {
749	cf::player::find $_[0]	1017	cf::player::find $_[0]
750	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1018	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
751	}	1019	}
752		1020
		1021	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1022
		1023	Sends an ext reply to the player.
		1024
		1025	=cut
		1026
		1027	sub cf::player::ext_reply($$$%) {
		1028	my ($self, $id, %msg) = @_;
		1029
		1030	$msg{msgid} = $id;
		1031
		1032	$self->send ("ext " . to_json \%msg);
		1033	}
		1034
		1035	=back
		1036
		1037
		1038	=head3 cf::map
		1039
		1040	=over 4
		1041
		1042	=cut
		1043
		1044	package cf::map;
		1045
		1046	use Fcntl;
		1047	use Coro::AIO;
		1048
		1049	our $MAX_RESET = 7200;
		1050	our $DEFAULT_RESET = 3600;
		1051	$MAX_RESET = 10;#d#
		1052	$DEFAULT_RESET = 10;#d#
		1053
		1054	sub generate_random_map {
		1055	my ($path, $rmp) = @_;
		1056
		1057	# mit "rum" bekleckern, nicht
		1058	cf::map::_create_random_map
		1059	$path,
		1060	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1061	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1062	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1063	$rmp->{exit_on_final_map},
		1064	$rmp->{xsize}, $rmp->{ysize},
		1065	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1066	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1067	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1068	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1069	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1070	(cf::region::find $rmp->{region})
		1071	}
		1072
		1073	# and all this just because we cannot iterate over
		1074	# all maps in C++...
		1075	sub change_all_map_light {
		1076	my ($change) = @_;
		1077
		1078	$_->change_map_light ($change) for values %cf::MAP;
		1079	}
		1080
		1081	sub try_load_header($) {
		1082	my ($path) = @_;
		1083
		1084	utf8::encode $path;
		1085	aio_open $path, O_RDONLY, 0
		1086	or return;
		1087
		1088	my $map = cf::map::new
		1089	or return;
		1090
		1091	$map->load_header ($path)
		1092	or return;
		1093
		1094	$map->{load_path} = $path;
		1095	use Data::Dumper; warn Dumper $map;#d#
		1096
		1097	$map
		1098	}
		1099
		1100	sub find_map {
		1101	my ($path, $origin) = @_;
		1102
		1103	#warn "find_map<$path,$origin>\n";#d#
		1104
		1105	$path = ref $path ? $path : new cf::path $path, $origin && $origin->path;
		1106	my $key = $path->as_string;
		1107
		1108	$cf::MAP{$key} || do {
		1109	# do it the slow way
		1110	my $map = try_load_header $path->save_path;
		1111
		1112	if ($map) {
		1113	# safety
		1114	$map->{instantiate_time} = $cf::RUNTIME
		1115	if $map->{instantiate_time} > $cf::RUNTIME;
		1116	} else {
		1117	if (my $rmp = $path->random_map_params) {
		1118	$map = generate_random_map $key, $rmp;
		1119	} else {
		1120	$map = try_load_header $path->load_path;
		1121	}
		1122
		1123	$map or return;
		1124
		1125	$map->{instantiate_time} = $cf::RUNTIME;
		1126	$map->instantiate;
		1127
		1128	# per-player maps become, after loading, normal maps
		1129	$map->per_player (0) if $path->{user_rel};
		1130	}
		1131
		1132	$map->path ($key);
		1133	$map->{path} = $path;
		1134	$map->last_access ($cf::RUNTIME);
		1135
		1136	$map->reset if $map->should_reset;
		1137
		1138	$cf::MAP{$key} = $map
		1139	}
		1140	}
		1141
		1142	sub load {
		1143	my ($self) = @_;
		1144
		1145	return if $self->in_memory != cf::MAP_SWAPPED;
		1146
		1147	$self->in_memory (cf::MAP_LOADING);
		1148
		1149	my $path = $self->{path};
		1150
		1151	$self->alloc;
		1152	$self->load_objects ($self->{load_path}, 1)
		1153	or return;
		1154
		1155	if (my $uniq = $path->uniq_path) {
		1156	utf8::encode $uniq;
		1157	if (aio_open $uniq, O_RDONLY, 0) {
		1158	$self->clear_unique_items;
		1159	$self->load_objects ($uniq, 0);
		1160	}
		1161	}
		1162
		1163	# now do the right thing for maps
		1164	$self->link_multipart_objects;
		1165
		1166	if ($self->{path}->is_style_map) {
		1167	$self->{deny_save} = 1;
		1168	$self->{deny_reset} = 1;
		1169	} else {
		1170	$self->fix_auto_apply;
		1171	$self->decay_objects;
		1172	$self->update_buttons;
		1173	$self->set_darkness_map;
		1174	$self->difficulty ($self->estimate_difficulty)
		1175	unless $self->difficulty;
		1176	$self->activate;
		1177	}
		1178
		1179	$self->in_memory (cf::MAP_IN_MEMORY);
		1180	}
		1181
		1182	sub load_map_sync {
		1183	my ($path, $origin) = @_;
		1184
		1185	#warn "load_map_sync<$path, $origin>\n";#d#
		1186
		1187	cf::sync_job {
		1188	my $map = cf::map::find_map $path, $origin
		1189	or return;
		1190	$map->load;
		1191	$map
		1192	}
		1193	}
		1194
		1195	sub save {
		1196	my ($self) = @_;
		1197
		1198	my $save = $self->{path}->save_path; utf8::encode $save;
		1199	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1200
		1201	$self->{last_save} = $cf::RUNTIME;
		1202
		1203	return unless $self->dirty;
		1204
		1205	$self->{load_path} = $save;
		1206
		1207	return if $self->{deny_save};
		1208
		1209	warn "saving map ", $self->path;
		1210
		1211	if ($uniq) {
		1212	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1213	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1214	} else {
		1215	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1216	}
		1217	}
		1218
		1219	sub swap_out {
		1220	my ($self) = @_;
		1221
		1222	return if $self->players;
		1223	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1224	return if $self->{deny_save};
		1225
		1226	$self->save;
		1227	$self->clear;
		1228	$self->in_memory (cf::MAP_SWAPPED);
		1229	}
		1230
		1231	sub should_reset {
		1232	my ($map) = @_;
		1233
		1234	# TODO: safety, remove and allow resettable per-player maps
		1235	return if $map->{path}{user_rel};#d#
		1236	return if $map->{deny_reset};
		1237	#return unless $map->reset_timeout;
		1238
		1239	my $time = $map->fixed_resettime ? $map->{instantiate_time} : $map->last_access;
		1240
		1241	$time + ($map->reset_timeout || $DEFAULT_RESET) < $cf::RUNTIME
		1242	}
		1243
		1244	sub reset {
		1245	my ($self) = @_;
		1246
		1247	return if $self->players;
		1248	return if $self->{path}{user_rel};#d#
		1249
		1250	warn "resetting map ", $self->path;#d#
		1251
		1252	utf8::encode (my $save = $self->{path}->save_path);
		1253	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1254	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1255
		1256	$_->clear_links_to ($self) for values %cf::MAP;
		1257
		1258	$self->clear;
		1259	$self->in_memory (cf::MAP_SWAPPED);
		1260	utf8::encode ($self->{load_path} = $self->{path}->load_path);
		1261	}
		1262
		1263	sub customise_for {
		1264	my ($map, $ob) = @_;
		1265
		1266	if ($map->per_player) {
		1267	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1268	}
		1269
		1270	$map
		1271	}
		1272
		1273	sub emergency_save {
		1274	local $cf::FREEZE = 1;
		1275
		1276	warn "enter emergency map save\n";
		1277
		1278	cf::sync_job {
		1279	warn "begin emergency map save\n";
		1280	$_->save for values %cf::MAP;
		1281	};
		1282
		1283	warn "end emergency map save\n";
		1284	}
		1285
		1286	package cf;
		1287
		1288	=back
		1289
		1290
		1291	=head3 cf::object::player
		1292
		1293	=over 4
		1294
753	=item $player->reply ($npc, $msg[, $flags])	1295	=item $player_object->reply ($npc, $msg[, $flags])
754		1296
755	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1297	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
756	can be C<undef>. Does the right thing when the player is currently in a	1298	can be C<undef>. Does the right thing when the player is currently in a
757	dialogue with the given NPC character.	1299	dialogue with the given NPC character.
758		1300
759	=cut	1301	=cut
760		1302
761	# rough implementation of a future "reply" method that works	1303	# rough implementation of a future "reply" method that works
762	# with dialog boxes.	1304	# with dialog boxes.
		1305	#TODO: the first argument must go, split into a $npc->reply_to ( method
763	sub cf::object::player::reply($$$;$) {	1306	sub cf::object::player::reply($$$;$) {
764	my ($self, $npc, $msg, $flags) = @_;	1307	my ($self, $npc, $msg, $flags) = @_;
765		1308
766	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1309	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
767		1310
…		…
771	$msg = $npc->name . " says: $msg" if $npc;	1314	$msg = $npc->name . " says: $msg" if $npc;
772	$self->message ($msg, $flags);	1315	$self->message ($msg, $flags);
773	}	1316	}
774	}	1317	}
775		1318
776	=item $player->ext_reply ($msgid, $msgtype, %msg)	1319	=item $player_object->may ("access")
777		1320
778	Sends an ext reply to the player.	1321	Returns wether the given player is authorized to access resource "access"
		1322	(e.g. "command_wizcast").
779		1323
780	=cut	1324	=cut
781		1325
782	sub cf::player::ext_reply($$$%) {	1326	sub cf::object::player::may {
		1327	my ($self, $access) = @_;
		1328
		1329	$self->flag (cf::FLAG_WIZ) ||
		1330	(ref $cf::CFG{"may_$access"}
		1331	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1332	: $cf::CFG{"may_$access"})
		1333	}
		1334
		1335	sub cf::object::player::enter_link {
		1336	my ($self) = @_;
		1337
		1338	return if $self->map == $LINK_MAP;
		1339
		1340	$self->{_link_pos} = [$self->map->{path}, $self->x, $self->y]
		1341	if $self->map;
		1342
		1343	$self->enter_map ($LINK_MAP, 20, 20);
		1344	$self->deactivate_recursive;
		1345	}
		1346
		1347	sub cf::object::player::leave_link {
		1348	my ($self, $map, $x, $y) = @_;
		1349
		1350	my $link_pos = delete $self->{_link_pos};
		1351
		1352	unless ($map) {
		1353	$self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1354
		1355	# restore original map position
		1356	($map, $x, $y) = @{ $link_pos || [] };
		1357	$map = cf::map::find_map $map;
		1358
		1359	unless ($map) {
		1360	($map, $x, $y) = @$EMERGENCY_POSITION;
		1361	$map = cf::map::find_map $map
		1362	or die "FATAL: cannot load emergency map\n";
		1363	}
		1364	}
		1365
		1366	($x, $y) = (-1, -1)
		1367	unless (defined $x) && (defined $y);
		1368
		1369	# use -1 or undef as default coordinates, not 0, 0
		1370	($x, $y) = ($map->enter_x, $map->enter_y)
		1371	if $x <=0 && $y <= 0;
		1372
		1373	$map->load;
		1374
		1375	$self->activate_recursive;
		1376	$self->enter_map ($map, $x, $y);
		1377	}
		1378
		1379	=item $player_object->goto_map ($map, $x, $y)
		1380
		1381	=cut
		1382
		1383	sub cf::object::player::goto_map {
		1384	my ($self, $path, $x, $y) = @_;
		1385
		1386	$self->enter_link;
		1387
		1388	(Coro::async {
		1389	$path = new cf::path $path;
		1390
		1391	my $map = cf::map::find_map $path->as_string;
		1392	$map = $map->customise_for ($self) if $map;
		1393
		1394	warn "entering ", $map->path, " at ($x, $y)\n"
		1395	if $map;
		1396
		1397	$self->leave_link ($map, $x, $y);
		1398	})->prio (1);
		1399	}
		1400
		1401	=item $player_object->enter_exit ($exit_object)
		1402
		1403	=cut
		1404
		1405	sub parse_random_map_params {
		1406	my ($spec) = @_;
		1407
		1408	my $rmp = { # defaults
		1409	xsize => 10,
		1410	ysize => 10,
		1411	};
		1412
		1413	for (split /\n/, $spec) {
		1414	my ($k, $v) = split /\s+/, $_, 2;
		1415
		1416	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1417	}
		1418
		1419	$rmp
		1420	}
		1421
		1422	sub prepare_random_map {
		1423	my ($exit) = @_;
		1424
		1425	# all this does is basically replace the /! path by
		1426	# a new random map path (?random/...) with a seed
		1427	# that depends on the exit object
		1428
		1429	my $rmp = parse_random_map_params $exit->msg;
		1430
		1431	if ($exit->map) {
		1432	$rmp->{region} = $exit->map->region_name;
		1433	$rmp->{origin_map} = $exit->map->path;
		1434	$rmp->{origin_x} = $exit->x;
		1435	$rmp->{origin_y} = $exit->y;
		1436	}
		1437
		1438	$rmp->{random_seed} ||= $exit->random_seed;
		1439
		1440	my $data = cf::to_json $rmp;
		1441	my $md5 = Digest::MD5::md5_hex $data;
		1442
		1443	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1444	aio_write $fh, 0, (length $data), $data, 0;
		1445
		1446	$exit->slaying ("?random/$md5");
		1447	$exit->msg (undef);
		1448	}
		1449	}
		1450
		1451	sub cf::object::player::enter_exit {
783	my ($self, $id, %msg) = @_;	1452	my ($self, $exit) = @_;
784		1453
785	$msg{msgid} = $id;	1454	return unless $self->type == cf::PLAYER;
786		1455
787	$self->send ("ext " . to_json \%msg);	1456	$self->enter_link;
788	}
789		1457
790	#############################################################################	1458	(Coro::async {
791	# map scripting support	1459	unless (eval {
		1460
		1461	prepare_random_map $exit
		1462	if $exit->slaying eq "/!";
		1463
		1464	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1465	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1466
		1467	1;
		1468	}) {
		1469	$self->message ("Something went wrong deep within the crossfire server. "
		1470	. "I'll try to bring you back to the map you were before. "
		1471	. "Please report this to the dungeon master",
		1472	cf::NDI_UNIQUE | cf::NDI_RED);
		1473
		1474	warn "ERROR in enter_exit: $@";
		1475	$self->leave_link;
		1476	}
		1477	})->prio (1);
		1478	}
		1479
		1480	=head3 cf::client
		1481
		1482	=over 4
		1483
		1484	=item $client->send_drawinfo ($text, $flags)
		1485
		1486	Sends a drawinfo packet to the client. Circumvents output buffering so
		1487	should not be used under normal circumstances.
		1488
		1489	=cut
		1490
		1491	sub cf::client::send_drawinfo {
		1492	my ($self, $text, $flags) = @_;
		1493
		1494	utf8::encode $text;
		1495	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1496	}
		1497
		1498
		1499	=item $success = $client->query ($flags, "text", \&cb)
		1500
		1501	Queues a query to the client, calling the given callback with
		1502	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1503	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1504
		1505	Queries can fail, so check the return code. Or don't, as queries will become
		1506	reliable at some point in the future.
		1507
		1508	=cut
		1509
		1510	sub cf::client::query {
		1511	my ($self, $flags, $text, $cb) = @_;
		1512
		1513	return unless $self->state == ST_PLAYING
		1514	|| $self->state == ST_SETUP
		1515	|| $self->state == ST_CUSTOM;
		1516
		1517	$self->state (ST_CUSTOM);
		1518
		1519	utf8::encode $text;
		1520	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1521
		1522	$self->send_packet ($self->{query_queue}[0][0])
		1523	if @{ $self->{query_queue} } == 1;
		1524	}
		1525
		1526	cf::client->attach (
		1527	on_reply => sub {
		1528	my ($ns, $msg) = @_;
		1529
		1530	# this weird shuffling is so that direct followup queries
		1531	# get handled first
		1532	my $queue = delete $ns->{query_queue};
		1533
		1534	(shift @$queue)->[1]->($msg);
		1535
		1536	push @{ $ns->{query_queue} }, @$queue;
		1537
		1538	if (@{ $ns->{query_queue} } == @$queue) {
		1539	if (@$queue) {
		1540	$ns->send_packet ($ns->{query_queue}[0][0]);
		1541	} else {
		1542	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1543	}
		1544	}
		1545	},
		1546	);
		1547
		1548	=item $client->coro (\&cb)
		1549
		1550	Create a new coroutine, running the specified callback. The coroutine will
		1551	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1552	or loss of connection).
		1553
		1554	=cut
		1555
		1556	sub cf::client::coro {
		1557	my ($self, $cb) = @_;
		1558
		1559	my $coro; $coro = async {
		1560	eval {
		1561	$cb->();
		1562	};
		1563	warn $@ if $@;
		1564	};
		1565
		1566	$coro->on_destroy (sub {
		1567	delete $self->{_coro}{$coro+0};
		1568	});
		1569
		1570	$self->{_coro}{$coro+0} = $coro;
		1571
		1572	$coro
		1573	}
		1574
		1575	cf::client->attach (
		1576	on_destroy => sub {
		1577	my ($ns) = @_;
		1578
		1579	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1580	},
		1581	);
		1582
		1583	=back
		1584
		1585
		1586	=head2 SAFE SCRIPTING
		1587
		1588	Functions that provide a safe environment to compile and execute
		1589	snippets of perl code without them endangering the safety of the server
		1590	itself. Looping constructs, I/O operators and other built-in functionality
		1591	is not available in the safe scripting environment, and the number of
		1592	functions and methods that can be called is greatly reduced.
		1593
		1594	=cut
792		1595
793	our $safe = new Safe "safe";	1596	our $safe = new Safe "safe";
794	our $safe_hole = new Safe::Hole;	1597	our $safe_hole = new Safe::Hole;
795		1598
796	$SIG{FPE} = 'IGNORE';	1599	$SIG{FPE} = 'IGNORE';
797		1600
798	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1601	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
799		1602
800	# here we export the classes and methods available to script code	1603	# here we export the classes and methods available to script code
801		1604
		1605	=pod
		1606
		1607	The following fucntions and emthods are available within a safe environment:
		1608
		1609	cf::object contr pay_amount pay_player map
		1610	cf::object::player player
		1611	cf::player peaceful
		1612	cf::map trigger
		1613
		1614	=cut
		1615
802	for (	1616	for (
803	["cf::object" => qw(contr pay_amount pay_player)],	1617	["cf::object" => qw(contr pay_amount pay_player map)],
804	["cf::object::player" => qw(player)],	1618	["cf::object::player" => qw(player)],
805	["cf::player" => qw(peaceful)],	1619	["cf::player" => qw(peaceful)],
		1620	["cf::map" => qw(trigger)],
806	) {	1621	) {
807	no strict 'refs';	1622	no strict 'refs';
808	my ($pkg, @funs) = @$_;	1623	my ($pkg, @funs) = @$_;
809	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1624	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
810	for @funs;	1625	for @funs;
811	}	1626	}
		1627
		1628	=over 4
		1629
		1630	=item @retval = safe_eval $code, [var => value, ...]
		1631
		1632	Compiled and executes the given perl code snippet. additional var/value
		1633	pairs result in temporary local (my) scalar variables of the given name
		1634	that are available in the code snippet. Example:
		1635
		1636	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1637
		1638	=cut
812		1639
813	sub safe_eval($;@) {	1640	sub safe_eval($;@) {
814	my ($code, %vars) = @_;	1641	my ($code, %vars) = @_;
815		1642
816	my $qcode = $code;	1643	my $qcode = $code;
…		…
839	}	1666	}
840		1667
841	wantarray ? @res : $res[0]	1668	wantarray ? @res : $res[0]
842	}	1669	}
843		1670
		1671	=item cf::register_script_function $function => $cb
		1672
		1673	Register a function that can be called from within map/npc scripts. The
		1674	function should be reasonably secure and should be put into a package name
		1675	like the extension.
		1676
		1677	Example: register a function that gets called whenever a map script calls
		1678	C<rent::overview>, as used by the C<rent> extension.
		1679
		1680	cf::register_script_function "rent::overview" => sub {
		1681	...
		1682	};
		1683
		1684	=cut
		1685
844	sub register_script_function {	1686	sub register_script_function {
845	my ($fun, $cb) = @_;	1687	my ($fun, $cb) = @_;
846		1688
847	no strict 'refs';	1689	no strict 'refs';
848	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1690	*{"safe::$fun"} = $safe_hole->wrap ($cb);
849	}	1691	}
850		1692
		1693	=back
		1694
		1695	=cut
		1696
		1697	#############################################################################
		1698
		1699	=head2 EXTENSION DATABASE SUPPORT
		1700
		1701	Crossfire maintains a very simple database for extension use. It can
		1702	currently store anything that can be serialised using Storable, which
		1703	excludes objects.
		1704
		1705	The parameter C<$family> should best start with the name of the extension
		1706	using it, it should be unique.
		1707
		1708	=over 4
		1709
		1710	=item $hashref = cf::db_get $family
		1711
		1712	Return a hashref for use by the extension C<$family>, which can be
		1713	modified. After modifications, you have to call C<cf::db_dirty> or
		1714	C<cf::db_sync>.
		1715
		1716	=item $value = cf::db_get $family => $key
		1717
		1718	Returns a single value from the database
		1719
		1720	=item cf::db_put $family => $hashref
		1721
		1722	Stores the given family hashref into the database. Updates are delayed, if
		1723	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1724
		1725	=item cf::db_put $family => $key => $value
		1726
		1727	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1728	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1729
		1730	=item cf::db_dirty
		1731
		1732	Marks the database as dirty, to be updated at a later time.
		1733
		1734	=item cf::db_sync
		1735
		1736	Immediately write the database to disk I<if it is dirty>.
		1737
		1738	=cut
		1739
		1740	our $DB;
		1741
		1742	{
		1743	my $path = cf::localdir . "/database.pst";
		1744
		1745	sub db_load() {
		1746	warn "loading database $path\n";#d# remove later
		1747	$DB = stat $path ? Storable::retrieve $path : { };
		1748	}
		1749
		1750	my $pid;
		1751
		1752	sub db_save() {
		1753	warn "saving database $path\n";#d# remove later
		1754	waitpid $pid, 0 if $pid;
		1755	if (0 == ($pid = fork)) {
		1756	$DB->{_meta}{version} = 1;
		1757	Storable::nstore $DB, "$path~";
		1758	rename "$path~", $path;
		1759	cf::_exit 0 if defined $pid;
		1760	}
		1761	}
		1762
		1763	my $dirty;
		1764
		1765	sub db_sync() {
		1766	db_save if $dirty;
		1767	undef $dirty;
		1768	}
		1769
		1770	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1771	db_sync;
		1772	});
		1773
		1774	sub db_dirty() {
		1775	$dirty = 1;
		1776	$idle->start;
		1777	}
		1778
		1779	sub db_get($;$) {
		1780	@_ >= 2
		1781	? $DB->{$_[0]}{$_[1]}
		1782	: ($DB->{$_[0]} ||= { })
		1783	}
		1784
		1785	sub db_put($$;$) {
		1786	if (@_ >= 3) {
		1787	$DB->{$_[0]}{$_[1]} = $_[2];
		1788	} else {
		1789	$DB->{$_[0]} = $_[1];
		1790	}
		1791	db_dirty;
		1792	}
		1793
		1794	cf::global->attach (
		1795	prio => 10000,
		1796	on_cleanup => sub {
		1797	db_sync;
		1798	},
		1799	);
		1800	}
		1801
851	#############################################################################	1802	#############################################################################
852	# the server's main()	1803	# the server's main()
853		1804
		1805	sub cfg_load {
		1806	open my $fh, "<:utf8", cf::confdir . "/config"
		1807	or return;
		1808
		1809	local $/;
		1810	*CFG = YAML::Syck::Load <$fh>;
		1811	}
		1812
854	sub main {	1813	sub main {
		1814	# we must not ever block the main coroutine
		1815	local $Coro::idle = sub {
		1816	Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#
		1817	(Coro::unblock_sub {
		1818	Event::one_event;
		1819	})->();
		1820	};
		1821
		1822	cfg_load;
		1823	db_load;
		1824	load_extensions;
855	Event::loop;	1825	Event::loop;
856	}	1826	}
857		1827
858	#############################################################################	1828	#############################################################################
859	# initialisation	1829	# initialisation
860		1830
		1831	sub perl_reload() {
		1832	# can/must only be called in main
		1833	if ($Coro::current != $Coro::main) {
		1834	warn "can only reload from main coroutine\n";
		1835	return;
		1836	}
		1837
		1838	warn "reloading...";
		1839
		1840	local $FREEZE = 1;
		1841	cf::emergency_save;
		1842
		1843	eval {
		1844	# if anything goes wrong in here, we should simply crash as we already saved
		1845
		1846	# cancel all watchers
		1847	for (Event::all_watchers) {
		1848	$_->cancel if $_->data & WF_AUTOCANCEL;
		1849	}
		1850
		1851	# cancel all extension coros
		1852	$_->cancel for values %EXT_CORO;
		1853	%EXT_CORO = ();
		1854
		1855	# unload all extensions
		1856	for (@exts) {
		1857	warn "unloading <$_>";
		1858	unload_extension $_;
		1859	}
		1860
		1861	# unload all modules loaded from $LIBDIR
		1862	while (my ($k, $v) = each %INC) {
		1863	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1864
		1865	warn "removing <$k>";
		1866	delete $INC{$k};
		1867
		1868	$k =~ s/\.pm$//;
		1869	$k =~ s/\//::/g;
		1870
		1871	if (my $cb = $k->can ("unload_module")) {
		1872	$cb->();
		1873	}
		1874
		1875	Symbol::delete_package $k;
		1876	}
		1877
		1878	# sync database to disk
		1879	cf::db_sync;
		1880	IO::AIO::flush;
		1881
		1882	# get rid of safe::, as good as possible
		1883	Symbol::delete_package "safe::$_"
		1884	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		1885
		1886	# remove register_script_function callbacks
		1887	# TODO
		1888
		1889	# unload cf.pm "a bit"
		1890	delete $INC{"cf.pm"};
		1891
		1892	# don't, removes xs symbols, too,
		1893	# and global variables created in xs
		1894	#Symbol::delete_package __PACKAGE__;
		1895
		1896	# reload cf.pm
		1897	warn "reloading cf.pm";
		1898	require cf;
		1899	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		1900
		1901	# load config and database again
		1902	cf::cfg_load;
		1903	cf::db_load;
		1904
		1905	# load extensions
		1906	warn "load extensions";
		1907	cf::load_extensions;
		1908
		1909	# reattach attachments to objects
		1910	warn "reattach";
		1911	_global_reattach;
		1912	};
		1913
		1914	if ($@) {
		1915	warn $@;
		1916	warn "error while reloading, exiting.";
		1917	exit 1;
		1918	}
		1919
		1920	warn "reloaded successfully";
		1921	};
		1922
		1923	#############################################################################
		1924
		1925	unless ($LINK_MAP) {
		1926	$LINK_MAP = cf::map::new;
		1927
		1928	$LINK_MAP->width (41);
		1929	$LINK_MAP->height (41);
		1930	$LINK_MAP->alloc;
		1931	$LINK_MAP->path ("{link}");
		1932	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		1933	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		1934
		1935	# dirty hack because... archetypes are not yet loaded
		1936	Event->timer (
		1937	after => 2,
		1938	cb => sub {
		1939	$_[0]->w->cancel;
		1940
		1941	# provide some exits "home"
		1942	my $exit = cf::object::new "exit";
		1943
		1944	$exit->slaying ($EMERGENCY_POSITION->[0]);
		1945	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		1946	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		1947
		1948	$LINK_MAP->insert ($exit->clone, 19, 19);
		1949	$LINK_MAP->insert ($exit->clone, 19, 20);
		1950	$LINK_MAP->insert ($exit->clone, 19, 21);
		1951	$LINK_MAP->insert ($exit->clone, 20, 19);
		1952	$LINK_MAP->insert ($exit->clone, 20, 21);
		1953	$LINK_MAP->insert ($exit->clone, 21, 19);
		1954	$LINK_MAP->insert ($exit->clone, 21, 20);
		1955	$LINK_MAP->insert ($exit->clone, 21, 21);
		1956
		1957	$exit->destroy;
		1958	});
		1959
		1960	$LINK_MAP->{deny_save} = 1;
		1961	$LINK_MAP->{deny_reset} = 1;
		1962
		1963	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		1964	}
		1965
861	register "<global>", __PACKAGE__;	1966	register "<global>", __PACKAGE__;
862		1967
		1968	register_command "perl-reload" => sub {
		1969	my ($who, $arg) = @_;
		1970
		1971	if ($who->flag (FLAG_WIZ)) {
		1972	$who->message ("start of reload.");
		1973	perl_reload;
		1974	$who->message ("end of reload.");
		1975	}
		1976	};
		1977
863	unshift @INC, $LIBDIR;	1978	unshift @INC, $LIBDIR;
864		1979
865	load_extensions;
866
867	$TICK_WATCHER = Event->timer (	1980	$TICK_WATCHER = Event->timer (
		1981	reentrant => 0,
868	prio => 1,	1982	prio => 0,
869	at => $NEXT_TICK || 1,	1983	at => $NEXT_TICK || $TICK,
		1984	data => WF_AUTOCANCEL,
870	cb => sub {	1985	cb => sub {
		1986	unless ($FREEZE) {
871	cf::server_tick; # one server iteration	1987	cf::server_tick; # one server iteration
		1988	$RUNTIME += $TICK;
		1989	}
872		1990
873	my $NOW = Event::time;
874	$NEXT_TICK += $TICK;	1991	$NEXT_TICK += $TICK;
875		1992
876	# if we are delayed by four ticks, skip them all	1993	# if we are delayed by four ticks or more, skip them all
877	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1994	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
878		1995
879	$TICK_WATCHER->at ($NEXT_TICK);	1996	$TICK_WATCHER->at ($NEXT_TICK);
880	$TICK_WATCHER->start;	1997	$TICK_WATCHER->start;
881	},	1998	},
882	);	1999	);
883		2000
884	_reload_2;	2001	IO::AIO::max_poll_time $TICK * 0.2;
		2002
		2003	Event->io (
		2004	fd => IO::AIO::poll_fileno,
		2005	poll => 'r',
		2006	prio => 5,
		2007	data => WF_AUTOCANCEL,
		2008	cb => \&IO::AIO::poll_cb,
		2009	);
		2010
		2011	Event->timer (
		2012	data => WF_AUTOCANCEL,
		2013	after => 0,
		2014	interval => 10,
		2015	cb => sub {
		2016	(Coro::unblock_sub {
		2017	write_runtime
		2018	or warn "ERROR: unable to write runtime file: $!";
		2019	})->();
		2020	},
		2021	);
885		2022
886	1	2023	1
887		2024

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