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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.51 by root, Mon Aug 28 14:05:24 2006 UTC vs.
Revision 1.111 by root, Mon Jan 1 12:28:47 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~", $runtime
		268	and return;
		269
		270	1
		271	}
		272
		273	=back
		274
		275	=cut
		276
107	#############################################################################	277	#############################################################################
108	# "new" plug-in system
109		278
		279	package cf::path;
		280
		281	sub new {
		282	my ($class, $path, $base) = @_;
		283
		284	$path = $path->as_string if ref $path;
		285
		286	my $self = bless { }, $class;
		287
		288	if ($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;
		294
		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/$path");
		307	}
		308
		309	for ($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
110	=item $object->attach ($attachment, key => $value...)	401	=item $attachable->attach ($attachment, key => $value...)
111		402
112	Attach a pre-registered attachment to an object.	403	=item $attachable->detach ($attachment)
113		404
114	=item $player->attach ($attachment, key => $value...)	405	Attach/detach a pre-registered attachment to a specific object and give it
		406	the specified key/value pairs as arguments.
115		407
116	Attach a pre-registered attachment to a player.	408	Example, attach a minesweeper attachment to the given object, making it a
		409	10x10 minesweeper game:
117		410
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	411	$obj->attach (minesweeper => width => 10, height => 10);
119		412
120	Attach a pre-registered attachment to a map.	413	=item $bool = $attachable->attached ($name)
121		414
122	=item cf::attach_global ...	415	Checks wether the named attachment is currently attached to the object.
123		416
124	Attach handlers for global events.	417	=item cf::CLASS->attach ...
125		418
126	This and all following C<attach_*>-functions expect any number of the	419	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	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:
128		455
129	=over 4	456	=over 4
130		457
131	=item prio => $number	458	=item prio => $number
132		459
…		…
134	by another C<prio> setting). Lower priority handlers get executed	461	by another C<prio> setting). Lower priority handlers get executed
135	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
136	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
137	unless you know what you are doing.	464	unless you know what you are doing.
138		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
139	=item on_I<event> => \&cb	472	=item on_I<event> => \&cb
140		473
141	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
142	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
143	handlers are recognised generally depends on the type of object these	476	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	485	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	486	object/class are recognised.
154		487
155	=back	488	=back
156		489
157	=item cf::attach_to_type $object_type, $subtype, ...	490	Example, define an attachment called "sockpuppet" that calls the given
		491	event handler when a monster attacks:
158		492
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	493	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	494	on_skill_attack => sub {
161	type.	495	my ($self, $victim) = @_;
		496	...
		497	}
		498	}
162		499
163	=item cf::attach_to_objects ...	500	=item $attachable->valid
164		501
165	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
166	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
167	the game.	504	valid C counterpart anymore you get an exception at runtime. This method
168		505	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	506	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		507
179	=cut	508	=cut
180		509
181	# the following variables are defined in .xs and must not be re-created	510	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	511	our @CB_GLOBAL = (); # registry for all global events
		512	our @CB_ATTACHABLE = (); # registry for all attachables
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	513	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	514	our @CB_PLAYER = ();
		515	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	516	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	517	our @CB_MAP = ();
187		518
188	my %attachment;	519	my %attachment;
189		520
190	sub _attach_cb($\%$$$) {	521	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	522	my ($registry, $event, $prio, $cb) = @_;
192		523
193	use sort 'stable';	524	use sort 'stable';
194		525
195	$cb = [$prio, $cb];	526	$cb = [$prio, $cb];
196		527
197	@{$registry->[$event]} = sort	528	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	529	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	530	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	531	}
		532
		533	# hack
		534	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
203		535
204	# attach handles attaching event callbacks	536	# attach handles attaching event callbacks
205	# 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
206	# registry (== where the callback attaches to).	538	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	539	sub _attach {
208	my ($registry, $klass, @arg) = @_;	540	my ($registry, $klass, @arg) = @_;
209		541
		542	my $object_type;
210	my $prio = 0;	543	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	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	}
218		550
219	while (@arg) {	551	while (@arg) {
220	my $type = shift @arg;	552	my $type = shift @arg;
221		553
222	if ($type eq "prio") {	554	if ($type eq "prio") {
223	$prio = shift @arg;	555	$prio = shift @arg;
224		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
225	} elsif ($type eq "package") {	566	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	567	my $pkg = shift @arg;
227		568
228	while (my ($name, $id) = each %cb_id) {	569	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	570	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	571	_attach_cb $registry, $id, $prio, $cb;
231	}	572	}
232	}	573	}
233		574
234	} elsif (exists $cb_id{$type}) {	575	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	576	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		577
237	} elsif (ref $type) {	578	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	579	warn "attaching objects not supported, ignoring.\n";
239		580
240	} else {	581	} else {
241	shift @arg;	582	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	583	warn "attach argument '$type' not supported, ignoring.\n";
243	}	584	}
244	}	585	}
245
246	\%undo
247	}	586	}
248		587
249	sub _attach_attachment {	588	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	589	my ($obj, $name, %arg) = @_;
251		590
252	my $res;	591	return if exists $obj->{_attachment}{$name};
253		592
254	if (my $attach = $attachment{$name}) {	593	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	594	my $registry = $obj->registry;
256		595
257	for (@$attach) {	596	for (@$attach) {
258	my ($klass, @attach) = @$_;	597	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	598	_attach $registry, $klass, @attach;
260	}	599	}
261		600
262	$obj->{$name} = \%arg;	601	$obj->{$name} = \%arg;
263	} else {	602	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	603	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	604	}
266		605
267	$obj->{_attachment}{$name} = undef;	606	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	607	}
272		608
273	sub cf::object::attach {	609	sub cf::attachable::attach {
		610	if (ref $_[0]) {
		611	_object_attach @_;
		612	} else {
		613	_attach shift->_attach_registry, @_;
		614	}
		615	};
		616
		617	# all those should be optimised
		618	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	619	my ($obj, $name) = @_;
275		620
276	_attach_attachment $obj, $name, %arg;	621	if (ref $obj) {
277	}	622	delete $obj->{_attachment}{$name};
		623	reattach ($obj);
		624	} else {
		625	Carp::croak "cannot, currently, detach class attachments";
		626	}
		627	};
278		628
279	sub cf::player::attach {	629	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	630	my ($obj, $name) = @_;
281		631
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	632	exists $obj->{_attachment}{$name}
283	}	633	}
284		634
285	sub cf::map::attach {	635	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	636	eval "#line " . __LINE__ . " 'cf.pm'
		637	sub cf::\L$klass\E::_attach_registry {
		638	(\\\@CB_$klass, KLASS_$klass)
		639	}
287		640
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	641	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	642	my \$name = shift;
316		643
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	644	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		645	}
		646	";
		647	die if $@;
318	}	648	}
319		649
320	our $override;	650	our $override;
321	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?
322		652
…		…
336	for (@$callbacks) {	666	for (@$callbacks) {
337	eval { &{$_->[1]} };	667	eval { &{$_->[1]} };
338		668
339	if ($@) {	669	if ($@) {
340	warn "$@";	670	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	671	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	672	override;
343	}	673	}
344		674
345	return 1 if $override;	675	return 1 if $override;
346	}	676	}
347		677
348	0	678	0
349	}	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
350		694
351	#############################################################################	695	#############################################################################
352	# object support	696	# object support
353		697
354	sub instantiate {
355	my ($obj, $data) = @_;
356
357	$data = from_json $data;
358
359	for (@$data) {
360	my ($name, $args) = @$_;
361
362	$obj->attach ($name, %{$args || {} });
363	}
364	}
365
366	# basically do the same as instantiate, without calling instantiate
367	sub reattach {	698	sub reattach {
		699	# basically do the same as instantiate, without calling instantiate
368	my ($obj) = @_;	700	my ($obj) = @_;
		701
369	my $registry = $obj->registry;	702	my $registry = $obj->registry;
370		703
371	@$registry = ();	704	@$registry = ();
372		705
373	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	706	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		707
375	for my $name (keys %{ $obj->{_attachment} || {} }) {	708	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	709	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	710	for (@$attach) {
378	my ($klass, @attach) = @$_;	711	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	712	_attach $registry, $klass, @attach;
380	}	713	}
381	} else {	714	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	715	warn "object uses attachment '$name' that is not available, postponing.\n";
383	}	716	}
384	}	717	}
385	}	718	}
386		719
387	sub object_freezer_save {	720	cf::attachable->attach (
388	my ($filename, $objs) = @_;
389
390	if (@$objs) {
391	open my $fh, ">:raw", "$filename.pst~";
392	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
393	close $fh;
394	chmod SAVE_MODE, "$filename.pst~";
395	rename "$filename.pst~", "$filename.pst";
396	} else {
397	unlink "$filename.pst";
398	}
399
400	chmod SAVE_MODE, "$filename~";
401	rename "$filename~", $filename;
402	}
403
404	sub object_thawer_load {
405	my ($filename) = @_;
406
407	open my $fh, "<:raw:perlio", "$filename.pst"
408	or return;
409
410	eval { local $/; (Storable::thaw <$fh>)->{objs} }
411	}
412
413	attach_to_objects
414	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,
415	on_clone => sub {	734	on_clone => sub {
416	my ($src, $dst) = @_;	735	my ($src, $dst) = @_;
417		736
418	@{$dst->registry} = @{$src->registry};	737	@{$dst->registry} = @{$src->registry};
419		738
420	%$dst = %$src;	739	%$dst = %$src;
421		740
422	%{$dst->{_attachment}} = %{$src->{_attachment}}	741	%{$dst->{_attachment}} = %{$src->{_attachment}}
423	if exists $src->{_attachment};	742	if exists $src->{_attachment};
424	},	743	},
425	;	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	}
426		808
427	#############################################################################	809	#############################################################################
428	# old plug-in events	810	# command handling &c
429		811
430	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
431	my $extension = shift;
432	my $event_code = shift;
433		813
434	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
435	or return;	815	$name.
436		816
437	&$cb	817	=cut
438	}
439
440	sub inject_global_event {
441	my $event = shift;
442
443	my $cb = $hook[$event]
444	or return;
445
446	List::Util::max map &$_, values %$cb
447	}
448
449	sub inject_command {
450	my ($name, $obj, $params) = @_;
451
452	for my $cmd (@{ $command{$name} }) {
453	$cmd->[1]->($obj, $params);
454	}
455
456	-1
457	}
458		818
459	sub register_command {	819	sub register_command {
460	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
461		821
462	my $caller = caller;	822	my $caller = caller;
463	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
464		824
465	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
466	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
467	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
468		836
469	sub register_extcmd {	837	sub register_extcmd {
470	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
471		839
472	my $caller = caller;	840	my $caller = caller;
473	#warn "registering extcmd '$name' to '$caller'";	841	#warn "registering extcmd '$name' to '$caller'";
474		842
475	$extcmd{$name} = [$cb, $caller];	843	$EXTCMD{$name} = [$cb, $caller];
476	}	844	}
		845
		846	cf::player->attach (
		847	on_command => sub {
		848	my ($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	);
477		877
478	sub register {	878	sub register {
479	my ($base, $pkg) = @_;	879	my ($base, $pkg) = @_;
480		880
481	#TODO	881	#TODO
…		…
500	. "#line 1 \"$path\"\n{\n"	900	. "#line 1 \"$path\"\n{\n"
501	. (do { local $/; <$fh> })	901	. (do { local $/; <$fh> })
502	. "\n};\n1";	902	. "\n};\n1";
503		903
504	eval $source	904	eval $source
505	or die "$path: $@";	905	or die $@ ? "$path: $@\n"
		906	: "extension disabled.\n";
506		907
507	push @exts, $pkg;	908	push @exts, $pkg;
508	$ext_pkg{$base} = $pkg;	909	$ext_pkg{$base} = $pkg;
509		910
510	# no strict 'refs';	911	# no strict 'refs';
…		…
523	# for my $idx (0 .. $#PLUGIN_EVENT) {	924	# for my $idx (0 .. $#PLUGIN_EVENT) {
524	# delete $hook[$idx]{$pkg};	925	# delete $hook[$idx]{$pkg};
525	# }	926	# }
526		927
527	# remove commands	928	# remove commands
528	for my $name (keys %command) {	929	for my $name (keys %COMMAND) {
529	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	930	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
530		931
531	if (@cb) {	932	if (@cb) {
532	$command{$name} = \@cb;	933	$COMMAND{$name} = \@cb;
533	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
534	} else {	934	} else {
535	delete $command{$name};
536	delete $COMMAND{"$name\000"};	935	delete $COMMAND{$name};
537	}	936	}
538	}	937	}
539		938
540	# remove extcmds	939	# remove extcmds
541	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	940	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
542	delete $extcmd{$name};	941	delete $EXTCMD{$name};
543	}	942	}
544		943
545	if (my $cb = $pkg->can ("unload")) {	944	if (my $cb = $pkg->can ("unload")) {
546	eval {	945	eval {
547	$cb->($pkg);	946	$cb->($pkg);
…		…
551		950
552	Symbol::delete_package $pkg;	951	Symbol::delete_package $pkg;
553	}	952	}
554		953
555	sub load_extensions {	954	sub load_extensions {
556	my $LIBDIR = maps_directory "perl";
557
558	for my $ext (<$LIBDIR/*.ext>) {	955	for my $ext (<$LIBDIR/*.ext>) {
559	next unless -r $ext;	956	next unless -r $ext;
560	eval {	957	eval {
561	load_extension $ext;	958	load_extension $ext;
562	1	959	1
563	} or warn "$ext not loaded: $@";	960	} or warn "$ext not loaded: $@";
564	}	961	}
565	}	962	}
566		963
567	sub _perl_reload(&) {
568	my ($msg) = @_;
569
570	$msg->("reloading...");
571
572	eval {
573	# 1. cancel all watchers
574	$_->cancel for Event::all_watchers;
575
576	# 2. unload all extensions
577	for (@exts) {
578	$msg->("unloading <$_>");
579	unload_extension $_;
580	}
581
582	# 3. unload all modules loaded from $LIBDIR
583	while (my ($k, $v) = each %INC) {
584	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
585
586	$msg->("removing <$k>");
587	delete $INC{$k};
588
589	$k =~ s/\.pm$//;
590	$k =~ s/\//::/g;
591
592	if (my $cb = $k->can ("unload_module")) {
593	$cb->();
594	}
595
596	Symbol::delete_package $k;
597	}
598
599	# 4. get rid of safe::, as good as possible
600	Symbol::delete_package "safe::$_"
601	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
602
603	# 5. remove register_script_function callbacks
604	# TODO
605
606	# 6. unload cf.pm "a bit"
607	delete $INC{"cf.pm"};
608
609	# don't, removes xs symbols, too,
610	# and global variables created in xs
611	#Symbol::delete_package __PACKAGE__;
612
613	# 7. reload cf.pm
614	$msg->("reloading cf.pm");
615	require cf;
616	};
617	$msg->($@) if $@;
618
619	$msg->("reloaded");
620	};
621
622	sub perl_reload() {
623	_perl_reload {
624	warn $_[0];
625	print "$_[0]\n";
626	};
627	}
628
629	register_command "perl-reload", 0, sub {
630	my ($who, $arg) = @_;
631
632	if ($who->flag (FLAG_WIZ)) {
633	_perl_reload {
634	warn $_[0];
635	$who->message ($_[0]);
636	};
637	}
638	};
639
640	#############################################################################
641	# extcmd framework, basically convert ext <msg>
642	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
643
644	attach_to_players
645	on_extcmd => sub {
646	my ($pl, $buf) = @_;
647
648	my $msg = eval { from_json $buf };
649
650	if (ref $msg) {
651	if (my $cb = $extcmd{$msg->{msgtype}}) {
652	if (my %reply = $cb->[0]->($pl, $msg)) {
653	$pl->ext_reply ($msg->{msgid}, %reply);
654	}
655	}
656	} else {
657	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
658	}
659
660	cf::override;
661	},
662	;
663
664	#############################################################################	964	#############################################################################
665	# load/save/clean perl data associated with a map	965	# load/save/clean perl data associated with a map
666		966
667	*cf::mapsupport::on_clean = sub {	967	*cf::mapsupport::on_clean = sub {
668	my ($map) = @_;	968	my ($map) = @_;
…		…
671	defined $path or return;	971	defined $path or return;
672		972
673	unlink "$path.pst";	973	unlink "$path.pst";
674	};	974	};
675		975
676	# old style persistent data, TODO: remove #d#
677	*cf::mapsupport::on_swapin =
678	*cf::mapsupport::on_load = sub {
679	my ($map) = @_;
680
681	my $path = $map->tmpname;
682	$path = $map->path unless defined $path;
683
684	open my $fh, "<:raw", "$path.cfperl"
685	or return; # no perl data
686
687	my $data = Storable::thaw do { local $/; <$fh> };
688
689	$data->{version} <= 1
690	or return; # too new
691
692	$map->_set_obs ($data->{obs});
693	$map->invoke (EVENT_MAP_UPGRADE);
694	};
695
696	attach_to_maps prio => -10000, package => cf::mapsupport::;	976	cf::map->attach (prio => -10000, package => cf::mapsupport::);
697		977
698	#############################################################################	978	#############################################################################
699	# load/save perl data associated with player->ob objects	979	# load/save perl data associated with player->ob objects
700		980
701	sub all_objects(@) {	981	sub all_objects(@) {
702	@_, map all_objects ($_->inv), @_	982	@_, map all_objects ($_->inv), @_
703	}	983	}
704		984
705	attach_to_players	985	# TODO: compatibility cruft, remove when no longer needed
		986	cf::player->attach (
706	on_load => sub {	987	on_load => sub {
707	my ($pl, $path) = @_;	988	my ($pl, $path) = @_;
708		989
709	for my $o (all_objects $pl->ob) {	990	for my $o (all_objects $pl->ob) {
710	if (my $value = $o->get_ob_key_value ("_perl_data")) {	991	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
712		993
713	%$o = %{ Storable::thaw pack "H*", $value };	994	%$o = %{ Storable::thaw pack "H*", $value };
714	}	995	}
715	}	996	}
716	},	997	},
717	;	998	);
718		999
719	#############################################################################	1000	#############################################################################
720	# 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
721		1009
722	=item cf::player::exists $login	1010	=item cf::player::exists $login
723		1011
724	Returns true when the given account exists.	1012	Returns true when the given account exists.
725		1013
…		…
728	sub cf::player::exists($) {	1016	sub cf::player::exists($) {
729	cf::player::find $_[0]	1017	cf::player::find $_[0]
730	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1018	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
731	}	1019	}
732		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->{load_original} = 1;
		1126	$map->{instantiate_time} = $cf::RUNTIME;
		1127	$map->instantiate;
		1128
		1129	# per-player maps become, after loading, normal maps
		1130	$map->per_player (0) if $path->{user_rel};
		1131	}
		1132
		1133	$map->path ($key);
		1134	$map->{path} = $path;
		1135	$map->last_access ($cf::RUNTIME);
		1136
		1137	$map->reset if $map->should_reset;
		1138
		1139	$cf::MAP{$key} = $map
		1140	}
		1141	}
		1142
		1143	sub load {
		1144	my ($self) = @_;
		1145
		1146	return if $self->in_memory != cf::MAP_SWAPPED;
		1147
		1148	$self->in_memory (cf::MAP_LOADING);
		1149
		1150	my $path = $self->{path};
		1151
		1152	$self->alloc;
		1153	$self->load_objects ($self->{load_path}, 1)
		1154	or return;
		1155
		1156	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1) if delete $self->{load_original};
		1157
		1158	if (my $uniq = $path->uniq_path) {
		1159	utf8::encode $uniq;
		1160	if (aio_open $uniq, O_RDONLY, 0) {
		1161	$self->clear_unique_items;
		1162	$self->load_objects ($uniq, 0);
		1163	}
		1164	}
		1165
		1166	# now do the right thing for maps
		1167	$self->link_multipart_objects;
		1168
		1169	if ($self->{path}->is_style_map) {
		1170	$self->{deny_save} = 1;
		1171	$self->{deny_reset} = 1;
		1172	} else {
		1173	$self->fix_auto_apply;
		1174	$self->decay_objects;
		1175	$self->update_buttons;
		1176	$self->set_darkness_map;
		1177	$self->difficulty ($self->estimate_difficulty)
		1178	unless $self->difficulty;
		1179	$self->activate;
		1180	}
		1181
		1182	$self->in_memory (cf::MAP_IN_MEMORY);
		1183	}
		1184
		1185	sub load_map_sync {
		1186	my ($path, $origin) = @_;
		1187
		1188	#warn "load_map_sync<$path, $origin>\n";#d#
		1189
		1190	cf::sync_job {
		1191	my $map = cf::map::find_map $path, $origin
		1192	or return;
		1193	$map->load;
		1194	$map
		1195	}
		1196	}
		1197
		1198	sub save {
		1199	my ($self) = @_;
		1200
		1201	my $save = $self->{path}->save_path; utf8::encode $save;
		1202	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1203
		1204	$self->{last_save} = $cf::RUNTIME;
		1205
		1206	return unless $self->dirty;
		1207
		1208	$self->{load_path} = $save;
		1209
		1210	return if $self->{deny_save};
		1211
		1212	warn "saving map ", $self->path;
		1213
		1214	if ($uniq) {
		1215	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1216	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1217	} else {
		1218	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1219	}
		1220	}
		1221
		1222	sub swap_out {
		1223	my ($self) = @_;
		1224
		1225	return if $self->players;
		1226	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1227	return if $self->{deny_save};
		1228
		1229	$self->save;
		1230	$self->clear;
		1231	$self->in_memory (cf::MAP_SWAPPED);
		1232	}
		1233
		1234	sub should_reset {
		1235	my ($map) = @_;
		1236
		1237	# TODO: safety, remove and allow resettable per-player maps
		1238	return if $map->{path}{user_rel};#d#
		1239	return if $map->{deny_reset};
		1240	#return unless $map->reset_timeout;
		1241
		1242	my $time = $map->fixed_resettime ? $map->{instantiate_time} : $map->last_access;
		1243	my $to = $map->reset_timeout || $DEFAULT_RESET;
		1244	$to = $MAX_RESET if $to > $MAX_RESET;
		1245
		1246	$time + $to < $cf::RUNTIME
		1247	}
		1248
		1249	sub unlink_save {
		1250	my ($self) = @_;
		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
		1257	sub reset {
		1258	my ($self) = @_;
		1259
		1260	return if $self->players;
		1261	return if $self->{path}{user_rel};#d#
		1262
		1263	warn "resetting map ", $self->path;#d#
		1264
		1265	delete $cf::MAP{$self->path};
		1266
		1267	$_->clear_links_to ($self) for values %cf::MAP;
		1268
		1269	$self->unlink_save;
		1270	$self->destroy;
		1271	}
		1272
		1273	sub customise_for {
		1274	my ($map, $ob) = @_;
		1275
		1276	if ($map->per_player) {
		1277	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1278	}
		1279
		1280	$map
		1281	}
		1282
		1283	sub emergency_save {
		1284	local $cf::FREEZE = 1;
		1285
		1286	warn "enter emergency map save\n";
		1287
		1288	cf::sync_job {
		1289	warn "begin emergency map save\n";
		1290	$_->save for values %cf::MAP;
		1291	};
		1292
		1293	warn "end emergency map save\n";
		1294	}
		1295
		1296	package cf;
		1297
		1298	=back
		1299
		1300
		1301	=head3 cf::object::player
		1302
		1303	=over 4
		1304
733	=item $player->reply ($npc, $msg[, $flags])	1305	=item $player_object->reply ($npc, $msg[, $flags])
734		1306
735	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1307	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
736	can be C<undef>. Does the right thing when the player is currently in a	1308	can be C<undef>. Does the right thing when the player is currently in a
737	dialogue with the given NPC character.	1309	dialogue with the given NPC character.
738		1310
739	=cut	1311	=cut
740		1312
741	# rough implementation of a future "reply" method that works	1313	# rough implementation of a future "reply" method that works
742	# with dialog boxes.	1314	# with dialog boxes.
		1315	#TODO: the first argument must go, split into a $npc->reply_to ( method
743	sub cf::object::player::reply($$$;$) {	1316	sub cf::object::player::reply($$$;$) {
744	my ($self, $npc, $msg, $flags) = @_;	1317	my ($self, $npc, $msg, $flags) = @_;
745		1318
746	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1319	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
747		1320
…		…
751	$msg = $npc->name . " says: $msg" if $npc;	1324	$msg = $npc->name . " says: $msg" if $npc;
752	$self->message ($msg, $flags);	1325	$self->message ($msg, $flags);
753	}	1326	}
754	}	1327	}
755		1328
756	=item $player->ext_reply ($msgid, $msgtype, %msg)	1329	=item $player_object->may ("access")
757		1330
758	Sends an ext reply to the player.	1331	Returns wether the given player is authorized to access resource "access"
		1332	(e.g. "command_wizcast").
759		1333
760	=cut	1334	=cut
761		1335
762	sub cf::player::ext_reply($$$%) {	1336	sub cf::object::player::may {
		1337	my ($self, $access) = @_;
		1338
		1339	$self->flag (cf::FLAG_WIZ) ||
		1340	(ref $cf::CFG{"may_$access"}
		1341	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1342	: $cf::CFG{"may_$access"})
		1343	}
		1344
		1345	sub cf::object::player::enter_link {
		1346	my ($self) = @_;
		1347
		1348	return if $self->map == $LINK_MAP;
		1349
		1350	$self->{_link_pos} = [$self->map->{path}, $self->x, $self->y]
		1351	if $self->map;
		1352
		1353	$self->enter_map ($LINK_MAP, 20, 20);
		1354	$self->deactivate_recursive;
		1355	}
		1356
		1357	sub cf::object::player::leave_link {
		1358	my ($self, $map, $x, $y) = @_;
		1359
		1360	my $link_pos = delete $self->{_link_pos};
		1361
		1362	unless ($map) {
		1363	$self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1364
		1365	# restore original map position
		1366	($map, $x, $y) = @{ $link_pos || [] };
		1367	$map = cf::map::find_map $map;
		1368
		1369	unless ($map) {
		1370	($map, $x, $y) = @$EMERGENCY_POSITION;
		1371	$map = cf::map::find_map $map
		1372	or die "FATAL: cannot load emergency map\n";
		1373	}
		1374	}
		1375
		1376	($x, $y) = (-1, -1)
		1377	unless (defined $x) && (defined $y);
		1378
		1379	# use -1 or undef as default coordinates, not 0, 0
		1380	($x, $y) = ($map->enter_x, $map->enter_y)
		1381	if $x <=0 && $y <= 0;
		1382
		1383	$map->load;
		1384
		1385	$self->activate_recursive;
		1386	$self->enter_map ($map, $x, $y);
		1387	}
		1388
		1389	=item $player_object->goto_map ($map, $x, $y)
		1390
		1391	=cut
		1392
		1393	sub cf::object::player::goto_map {
		1394	my ($self, $path, $x, $y) = @_;
		1395
		1396	$self->enter_link;
		1397
		1398	(Coro::async {
		1399	$path = new cf::path $path;
		1400
		1401	my $map = cf::map::find_map $path->as_string;
		1402	$map = $map->customise_for ($self) if $map;
		1403
		1404	warn "entering ", $map->path, " at ($x, $y)\n"
		1405	if $map;
		1406
		1407	$self->leave_link ($map, $x, $y);
		1408	})->prio (1);
		1409	}
		1410
		1411	=item $player_object->enter_exit ($exit_object)
		1412
		1413	=cut
		1414
		1415	sub parse_random_map_params {
		1416	my ($spec) = @_;
		1417
		1418	my $rmp = { # defaults
		1419	xsize => 10,
		1420	ysize => 10,
		1421	};
		1422
		1423	for (split /\n/, $spec) {
		1424	my ($k, $v) = split /\s+/, $_, 2;
		1425
		1426	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1427	}
		1428
		1429	$rmp
		1430	}
		1431
		1432	sub prepare_random_map {
		1433	my ($exit) = @_;
		1434
		1435	# all this does is basically replace the /! path by
		1436	# a new random map path (?random/...) with a seed
		1437	# that depends on the exit object
		1438
		1439	my $rmp = parse_random_map_params $exit->msg;
		1440
		1441	if ($exit->map) {
		1442	$rmp->{region} = $exit->map->region_name;
		1443	$rmp->{origin_map} = $exit->map->path;
		1444	$rmp->{origin_x} = $exit->x;
		1445	$rmp->{origin_y} = $exit->y;
		1446	}
		1447
		1448	$rmp->{random_seed} ||= $exit->random_seed;
		1449
		1450	my $data = cf::to_json $rmp;
		1451	my $md5 = Digest::MD5::md5_hex $data;
		1452
		1453	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1454	aio_write $fh, 0, (length $data), $data, 0;
		1455
		1456	$exit->slaying ("?random/$md5");
		1457	$exit->msg (undef);
		1458	}
		1459	}
		1460
		1461	sub cf::object::player::enter_exit {
763	my ($self, $id, %msg) = @_;	1462	my ($self, $exit) = @_;
764		1463
765	$msg{msgid} = $id;	1464	return unless $self->type == cf::PLAYER;
766		1465
767	$self->send ("ext " . to_json \%msg);	1466	$self->enter_link;
768	}
769		1467
770	#############################################################################	1468	(Coro::async {
771	# map scripting support	1469	unless (eval {
		1470
		1471	prepare_random_map $exit
		1472	if $exit->slaying eq "/!";
		1473
		1474	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1475	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1476
		1477	1;
		1478	}) {
		1479	$self->message ("Something went wrong deep within the crossfire server. "
		1480	. "I'll try to bring you back to the map you were before. "
		1481	. "Please report this to the dungeon master",
		1482	cf::NDI_UNIQUE | cf::NDI_RED);
		1483
		1484	warn "ERROR in enter_exit: $@";
		1485	$self->leave_link;
		1486	}
		1487	})->prio (1);
		1488	}
		1489
		1490	=head3 cf::client
		1491
		1492	=over 4
		1493
		1494	=item $client->send_drawinfo ($text, $flags)
		1495
		1496	Sends a drawinfo packet to the client. Circumvents output buffering so
		1497	should not be used under normal circumstances.
		1498
		1499	=cut
		1500
		1501	sub cf::client::send_drawinfo {
		1502	my ($self, $text, $flags) = @_;
		1503
		1504	utf8::encode $text;
		1505	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1506	}
		1507
		1508
		1509	=item $success = $client->query ($flags, "text", \&cb)
		1510
		1511	Queues a query to the client, calling the given callback with
		1512	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1513	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1514
		1515	Queries can fail, so check the return code. Or don't, as queries will become
		1516	reliable at some point in the future.
		1517
		1518	=cut
		1519
		1520	sub cf::client::query {
		1521	my ($self, $flags, $text, $cb) = @_;
		1522
		1523	return unless $self->state == ST_PLAYING
		1524	|| $self->state == ST_SETUP
		1525	|| $self->state == ST_CUSTOM;
		1526
		1527	$self->state (ST_CUSTOM);
		1528
		1529	utf8::encode $text;
		1530	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1531
		1532	$self->send_packet ($self->{query_queue}[0][0])
		1533	if @{ $self->{query_queue} } == 1;
		1534	}
		1535
		1536	cf::client->attach (
		1537	on_reply => sub {
		1538	my ($ns, $msg) = @_;
		1539
		1540	# this weird shuffling is so that direct followup queries
		1541	# get handled first
		1542	my $queue = delete $ns->{query_queue};
		1543
		1544	(shift @$queue)->[1]->($msg);
		1545
		1546	push @{ $ns->{query_queue} }, @$queue;
		1547
		1548	if (@{ $ns->{query_queue} } == @$queue) {
		1549	if (@$queue) {
		1550	$ns->send_packet ($ns->{query_queue}[0][0]);
		1551	} else {
		1552	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1553	}
		1554	}
		1555	},
		1556	);
		1557
		1558	=item $client->coro (\&cb)
		1559
		1560	Create a new coroutine, running the specified callback. The coroutine will
		1561	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1562	or loss of connection).
		1563
		1564	=cut
		1565
		1566	sub cf::client::coro {
		1567	my ($self, $cb) = @_;
		1568
		1569	my $coro; $coro = async {
		1570	eval {
		1571	$cb->();
		1572	};
		1573	warn $@ if $@;
		1574	};
		1575
		1576	$coro->on_destroy (sub {
		1577	delete $self->{_coro}{$coro+0};
		1578	});
		1579
		1580	$self->{_coro}{$coro+0} = $coro;
		1581
		1582	$coro
		1583	}
		1584
		1585	cf::client->attach (
		1586	on_destroy => sub {
		1587	my ($ns) = @_;
		1588
		1589	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1590	},
		1591	);
		1592
		1593	=back
		1594
		1595
		1596	=head2 SAFE SCRIPTING
		1597
		1598	Functions that provide a safe environment to compile and execute
		1599	snippets of perl code without them endangering the safety of the server
		1600	itself. Looping constructs, I/O operators and other built-in functionality
		1601	is not available in the safe scripting environment, and the number of
		1602	functions and methods that can be called is greatly reduced.
		1603
		1604	=cut
772		1605
773	our $safe = new Safe "safe";	1606	our $safe = new Safe "safe";
774	our $safe_hole = new Safe::Hole;	1607	our $safe_hole = new Safe::Hole;
775		1608
776	$SIG{FPE} = 'IGNORE';	1609	$SIG{FPE} = 'IGNORE';
777		1610
778	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1611	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
779		1612
780	# here we export the classes and methods available to script code	1613	# here we export the classes and methods available to script code
781		1614
		1615	=pod
		1616
		1617	The following fucntions and emthods are available within a safe environment:
		1618
		1619	cf::object contr pay_amount pay_player map
		1620	cf::object::player player
		1621	cf::player peaceful
		1622	cf::map trigger
		1623
		1624	=cut
		1625
782	for (	1626	for (
783	["cf::object" => qw(contr pay_amount pay_player)],	1627	["cf::object" => qw(contr pay_amount pay_player map)],
784	["cf::object::player" => qw(player)],	1628	["cf::object::player" => qw(player)],
785	["cf::player" => qw(peaceful)],	1629	["cf::player" => qw(peaceful)],
		1630	["cf::map" => qw(trigger)],
786	) {	1631	) {
787	no strict 'refs';	1632	no strict 'refs';
788	my ($pkg, @funs) = @$_;	1633	my ($pkg, @funs) = @$_;
789	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1634	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
790	for @funs;	1635	for @funs;
791	}	1636	}
		1637
		1638	=over 4
		1639
		1640	=item @retval = safe_eval $code, [var => value, ...]
		1641
		1642	Compiled and executes the given perl code snippet. additional var/value
		1643	pairs result in temporary local (my) scalar variables of the given name
		1644	that are available in the code snippet. Example:
		1645
		1646	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1647
		1648	=cut
792		1649
793	sub safe_eval($;@) {	1650	sub safe_eval($;@) {
794	my ($code, %vars) = @_;	1651	my ($code, %vars) = @_;
795		1652
796	my $qcode = $code;	1653	my $qcode = $code;
…		…
819	}	1676	}
820		1677
821	wantarray ? @res : $res[0]	1678	wantarray ? @res : $res[0]
822	}	1679	}
823		1680
		1681	=item cf::register_script_function $function => $cb
		1682
		1683	Register a function that can be called from within map/npc scripts. The
		1684	function should be reasonably secure and should be put into a package name
		1685	like the extension.
		1686
		1687	Example: register a function that gets called whenever a map script calls
		1688	C<rent::overview>, as used by the C<rent> extension.
		1689
		1690	cf::register_script_function "rent::overview" => sub {
		1691	...
		1692	};
		1693
		1694	=cut
		1695
824	sub register_script_function {	1696	sub register_script_function {
825	my ($fun, $cb) = @_;	1697	my ($fun, $cb) = @_;
826		1698
827	no strict 'refs';	1699	no strict 'refs';
828	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1700	*{"safe::$fun"} = $safe_hole->wrap ($cb);
829	}	1701	}
830		1702
		1703	=back
		1704
		1705	=cut
		1706
		1707	#############################################################################
		1708
		1709	=head2 EXTENSION DATABASE SUPPORT
		1710
		1711	Crossfire maintains a very simple database for extension use. It can
		1712	currently store anything that can be serialised using Storable, which
		1713	excludes objects.
		1714
		1715	The parameter C<$family> should best start with the name of the extension
		1716	using it, it should be unique.
		1717
		1718	=over 4
		1719
		1720	=item $hashref = cf::db_get $family
		1721
		1722	Return a hashref for use by the extension C<$family>, which can be
		1723	modified. After modifications, you have to call C<cf::db_dirty> or
		1724	C<cf::db_sync>.
		1725
		1726	=item $value = cf::db_get $family => $key
		1727
		1728	Returns a single value from the database
		1729
		1730	=item cf::db_put $family => $hashref
		1731
		1732	Stores the given family hashref into the database. Updates are delayed, if
		1733	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1734
		1735	=item cf::db_put $family => $key => $value
		1736
		1737	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1738	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1739
		1740	=item cf::db_dirty
		1741
		1742	Marks the database as dirty, to be updated at a later time.
		1743
		1744	=item cf::db_sync
		1745
		1746	Immediately write the database to disk I<if it is dirty>.
		1747
		1748	=cut
		1749
		1750	our $DB;
		1751
		1752	{
		1753	my $path = cf::localdir . "/database.pst";
		1754
		1755	sub db_load() {
		1756	warn "loading database $path\n";#d# remove later
		1757	$DB = stat $path ? Storable::retrieve $path : { };
		1758	}
		1759
		1760	my $pid;
		1761
		1762	sub db_save() {
		1763	warn "saving database $path\n";#d# remove later
		1764	waitpid $pid, 0 if $pid;
		1765	if (0 == ($pid = fork)) {
		1766	$DB->{_meta}{version} = 1;
		1767	Storable::nstore $DB, "$path~";
		1768	rename "$path~", $path;
		1769	cf::_exit 0 if defined $pid;
		1770	}
		1771	}
		1772
		1773	my $dirty;
		1774
		1775	sub db_sync() {
		1776	db_save if $dirty;
		1777	undef $dirty;
		1778	}
		1779
		1780	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1781	db_sync;
		1782	});
		1783
		1784	sub db_dirty() {
		1785	$dirty = 1;
		1786	$idle->start;
		1787	}
		1788
		1789	sub db_get($;$) {
		1790	@_ >= 2
		1791	? $DB->{$_[0]}{$_[1]}
		1792	: ($DB->{$_[0]} ||= { })
		1793	}
		1794
		1795	sub db_put($$;$) {
		1796	if (@_ >= 3) {
		1797	$DB->{$_[0]}{$_[1]} = $_[2];
		1798	} else {
		1799	$DB->{$_[0]} = $_[1];
		1800	}
		1801	db_dirty;
		1802	}
		1803
		1804	cf::global->attach (
		1805	prio => 10000,
		1806	on_cleanup => sub {
		1807	db_sync;
		1808	},
		1809	);
		1810	}
		1811
831	#############################################################################	1812	#############################################################################
832	# the server's main()	1813	# the server's main()
833		1814
		1815	sub cfg_load {
		1816	open my $fh, "<:utf8", cf::confdir . "/config"
		1817	or return;
		1818
		1819	local $/;
		1820	*CFG = YAML::Syck::Load <$fh>;
		1821	}
		1822
834	sub main {	1823	sub main {
		1824	# we must not ever block the main coroutine
		1825	local $Coro::idle = sub {
		1826	Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#
		1827	(Coro::unblock_sub {
		1828	Event::one_event;
		1829	})->();
		1830	};
		1831
		1832	cfg_load;
		1833	db_load;
		1834	load_extensions;
835	Event::loop;	1835	Event::loop;
836	}	1836	}
837		1837
838	#############################################################################	1838	#############################################################################
839	# initialisation	1839	# initialisation
840		1840
		1841	sub reload() {
		1842	# can/must only be called in main
		1843	if ($Coro::current != $Coro::main) {
		1844	warn "can only reload from main coroutine\n";
		1845	return;
		1846	}
		1847
		1848	warn "reloading...";
		1849
		1850	local $FREEZE = 1;
		1851	cf::emergency_save;
		1852
		1853	eval {
		1854	# if anything goes wrong in here, we should simply crash as we already saved
		1855
		1856	# cancel all watchers
		1857	for (Event::all_watchers) {
		1858	$_->cancel if $_->data & WF_AUTOCANCEL;
		1859	}
		1860
		1861	# cancel all extension coros
		1862	$_->cancel for values %EXT_CORO;
		1863	%EXT_CORO = ();
		1864
		1865	# unload all extensions
		1866	for (@exts) {
		1867	warn "unloading <$_>";
		1868	unload_extension $_;
		1869	}
		1870
		1871	# unload all modules loaded from $LIBDIR
		1872	while (my ($k, $v) = each %INC) {
		1873	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1874
		1875	warn "removing <$k>";
		1876	delete $INC{$k};
		1877
		1878	$k =~ s/\.pm$//;
		1879	$k =~ s/\//::/g;
		1880
		1881	if (my $cb = $k->can ("unload_module")) {
		1882	$cb->();
		1883	}
		1884
		1885	Symbol::delete_package $k;
		1886	}
		1887
		1888	# sync database to disk
		1889	cf::db_sync;
		1890	IO::AIO::flush;
		1891
		1892	# get rid of safe::, as good as possible
		1893	Symbol::delete_package "safe::$_"
		1894	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		1895
		1896	# remove register_script_function callbacks
		1897	# TODO
		1898
		1899	# unload cf.pm "a bit"
		1900	delete $INC{"cf.pm"};
		1901
		1902	# don't, removes xs symbols, too,
		1903	# and global variables created in xs
		1904	#Symbol::delete_package __PACKAGE__;
		1905
		1906	# reload cf.pm
		1907	warn "reloading cf.pm";
		1908	require cf;
		1909	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		1910
		1911	# load config and database again
		1912	cf::cfg_load;
		1913	cf::db_load;
		1914
		1915	# load extensions
		1916	warn "load extensions";
		1917	cf::load_extensions;
		1918
		1919	# reattach attachments to objects
		1920	warn "reattach";
		1921	_global_reattach;
		1922	};
		1923
		1924	if ($@) {
		1925	warn $@;
		1926	warn "error while reloading, exiting.";
		1927	exit 1;
		1928	}
		1929
		1930	warn "reloaded successfully";
		1931	};
		1932
		1933	#############################################################################
		1934
		1935	unless ($LINK_MAP) {
		1936	$LINK_MAP = cf::map::new;
		1937
		1938	$LINK_MAP->width (41);
		1939	$LINK_MAP->height (41);
		1940	$LINK_MAP->alloc;
		1941	$LINK_MAP->path ("{link}");
		1942	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		1943	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		1944
		1945	# dirty hack because... archetypes are not yet loaded
		1946	Event->timer (
		1947	after => 2,
		1948	cb => sub {
		1949	$_[0]->w->cancel;
		1950
		1951	# provide some exits "home"
		1952	my $exit = cf::object::new "exit";
		1953
		1954	$exit->slaying ($EMERGENCY_POSITION->[0]);
		1955	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		1956	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		1957
		1958	$LINK_MAP->insert ($exit->clone, 19, 19);
		1959	$LINK_MAP->insert ($exit->clone, 19, 20);
		1960	$LINK_MAP->insert ($exit->clone, 19, 21);
		1961	$LINK_MAP->insert ($exit->clone, 20, 19);
		1962	$LINK_MAP->insert ($exit->clone, 20, 21);
		1963	$LINK_MAP->insert ($exit->clone, 21, 19);
		1964	$LINK_MAP->insert ($exit->clone, 21, 20);
		1965	$LINK_MAP->insert ($exit->clone, 21, 21);
		1966
		1967	$exit->destroy;
		1968	});
		1969
		1970	$LINK_MAP->{deny_save} = 1;
		1971	$LINK_MAP->{deny_reset} = 1;
		1972
		1973	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		1974	}
		1975
841	register "<global>", __PACKAGE__;	1976	register "<global>", __PACKAGE__;
842		1977
		1978	register_command "reload" => sub {
		1979	my ($who, $arg) = @_;
		1980
		1981	if ($who->flag (FLAG_WIZ)) {
		1982	$who->message ("start of reload.");
		1983	reload;
		1984	$who->message ("end of reload.");
		1985	}
		1986	};
		1987
843	unshift @INC, $LIBDIR;	1988	unshift @INC, $LIBDIR;
844		1989
845	load_extensions;
846
847	$TICK_WATCHER = Event->timer (	1990	$TICK_WATCHER = Event->timer (
		1991	reentrant => 0,
848	prio => 1,	1992	prio => 0,
849	at => $NEXT_TICK || 1,	1993	at => $NEXT_TICK || $TICK,
		1994	data => WF_AUTOCANCEL,
850	cb => sub {	1995	cb => sub {
		1996	unless ($FREEZE) {
851	cf::server_tick; # one server iteration	1997	cf::server_tick; # one server iteration
		1998	$RUNTIME += $TICK;
		1999	}
852		2000
853	my $NOW = Event::time;
854	$NEXT_TICK += $TICK;	2001	$NEXT_TICK += $TICK;
855		2002
856	# if we are delayed by four ticks, skip them all	2003	# if we are delayed by four ticks or more, skip them all
857	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2004	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
858		2005
859	$TICK_WATCHER->at ($NEXT_TICK);	2006	$TICK_WATCHER->at ($NEXT_TICK);
860	$TICK_WATCHER->start;	2007	$TICK_WATCHER->start;
861	},	2008	},
862	);	2009	);
863		2010
864	_reload_2;	2011	IO::AIO::max_poll_time $TICK * 0.2;
		2012
		2013	Event->io (
		2014	fd => IO::AIO::poll_fileno,
		2015	poll => 'r',
		2016	prio => 5,
		2017	data => WF_AUTOCANCEL,
		2018	cb => \&IO::AIO::poll_cb,
		2019	);
		2020
		2021	Event->timer (
		2022	data => WF_AUTOCANCEL,
		2023	after => 0,
		2024	interval => 10,
		2025	cb => sub {
		2026	(Coro::unblock_sub {
		2027	write_runtime
		2028	or warn "ERROR: unable to write runtime file: $!";
		2029	})->();
		2030	},
		2031	);
865		2032
866	1	2033	1
867		2034

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