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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 1.112 by root, Mon Jan 1 13:31:47 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 ($job) = @_;
		201
		202	if ($Coro::current == $Coro::main) {
		203	# this is the main coro, too bad, we have to block
		204	# till the operation succeeds, freezing the server :/
		205
		206	# TODO: use suspend/resume instead
		207	# (but this is cancel-safe)
		208	local $FREEZE = 1;
		209
		210	my $busy = 1;
		211	my @res;
		212
		213	(Coro::async {
		214	@res = eval { $job->() };
		215	warn $@ if $@;
		216	undef $busy;
		217	})->prio (Coro::PRIO_MAX);
		218
		219	while ($busy) {
		220	Coro::cede_notself;
		221	Event::one_event unless Coro::nready;
		222	}
		223
		224	wantarray ? @res : $res[0]
		225	} else {
		226	# we are in another coroutine, how wonderful, everything just works
		227
		228	$job->()
		229	}
		230	}
		231
		232	=item $coro = cf::coro { BLOCK }
		233
		234	Creates and returns a new coro. This coro is automcatially being canceled
		235	when the extension calling this is being unloaded.
		236
		237	=cut
		238
		239	sub coro(&) {
		240	my $cb = shift;
		241
		242	my $coro; $coro = async {
		243	eval {
		244	$cb->();
		245	};
		246	warn $@ if $@;
		247	};
		248
		249	$coro->on_destroy (sub {
		250	delete $EXT_CORO{$coro+0};
		251	});
		252	$EXT_CORO{$coro+0} = $coro;
		253
		254	$coro
		255	}
		256
		257	sub write_runtime {
		258	my $runtime = cf::localdir . "/runtime";
		259
		260	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		261	or return;
		262
		263	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		264	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		265	and return;
		266
		267	aio_fsync $fh
		268	and return;
		269
		270	close $fh
		271	or return;
		272
		273	aio_rename "$runtime~", $runtime
		274	and return;
		275
		276	1
		277	}
		278
		279	=back
		280
		281	=cut
		282
107	#############################################################################	283	#############################################################################
108	# "new" plug-in system
109		284
110	=item $object->attach ($attachment, key => $value...)	285	package cf::path;
111		286
112	=item $object->detach ($attachment)	287	sub new {
		288	my ($class, $path, $base) = @_;
113		289
114	Attach/detach a pre-registered attachment to an object.	290	$path = $path->as_string if ref $path;
115		291
116	=item $player->attach ($attachment, key => $value...)	292	my $self = bless { }, $class;
117		293
118	=item $player->detach ($attachment)	294	if ($path =~ s{^\?random/}{}) {
		295	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		296	$self->{random} = cf::from_json $data;
		297	} else {
		298	if ($path =~ s{^~([^/]+)?}{}) {
		299	$self->{user_rel} = 1;
119		300
120	Attach/detach a pre-registered attachment to a player.	301	if (defined $1) {
		302	$self->{user} = $1;
		303	} elsif ($base =~ m{^~([^/]+)/}) {
		304	$self->{user} = $1;
		305	} else {
		306	warn "cannot resolve user-relative path without user <$path,$base>\n";
		307	}
		308	} elsif ($path =~ /^\//) {
		309	# already absolute
		310	} else {
		311	$base =~ s{[^/]+/?$}{};
		312	return $class->new ("$base/$path");
		313	}
121		314
		315	for ($path) {
		316	redo if s{/\.?/}{/};
		317	redo if s{/[^/]+/\.\./}{/};
		318	}
		319	}
		320
		321	$self->{path} = $path;
		322
		323	$self
		324	}
		325
		326	# the name / primary key / in-game path
		327	sub as_string {
		328	my ($self) = @_;
		329
		330	$self->{user_rel} ? "~$self->{user}$self->{path}"
		331	: $self->{random} ? "?random/$self->{path}"
		332	: $self->{path}
		333	}
		334
		335	# the displayed name, this is a one way mapping
		336	sub visible_name {
		337	my ($self) = @_;
		338
		339	# if (my $rmp = $self->{random}) {
		340	# # todo: be more intelligent about this
		341	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		342	# } else {
		343	$self->as_string
		344	# }
		345	}
		346
		347	# escape the /'s in the path
		348	sub _escaped_path {
		349	# ∕ is U+2215
		350	(my $path = $_[0]{path}) =~ s/\//∕/g;
		351	$path
		352	}
		353
		354	# the original (read-only) location
		355	sub load_path {
		356	my ($self) = @_;
		357
		358	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		359	}
		360
		361	# the temporary/swap location
		362	sub save_path {
		363	my ($self) = @_;
		364
		365	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		366	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		367	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		368	}
		369
		370	# the unique path, might be eq to save_path
		371	sub uniq_path {
		372	my ($self) = @_;
		373
		374	$self->{user_rel} || $self->{random}
		375	? undef
		376	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		377	}
		378
		379	# return random map parameters, or undef
		380	sub random_map_params {
		381	my ($self) = @_;
		382
		383	$self->{random}
		384	}
		385
		386	# this is somewhat ugly, but style maps do need special treatment
		387	sub is_style_map {
		388	$_[0]{path} =~ m{^/styles/}
		389	}
		390
		391	package cf;
		392
		393	#############################################################################
		394
		395	=head2 ATTACHABLE OBJECTS
		396
		397	Many objects in crossfire are so-called attachable objects. That means you can
		398	attach callbacks/event handlers (a collection of which is called an "attachment")
		399	to it. All such attachable objects support the following methods.
		400
		401	In the following description, CLASS can be any of C<global>, C<object>
		402	C<player>, C<client> or C<map> (i.e. the attachable objects in
		403	crossfire+).
		404
		405	=over 4
		406
122	=item $map->attach ($attachment, key => $value...)	407	=item $attachable->attach ($attachment, key => $value...)
123		408
124	=item $map->detach ($attachment)	409	=item $attachable->detach ($attachment)
125		410
126	Attach/detach a pre-registered attachment to a map.	411	Attach/detach a pre-registered attachment to a specific object and give it
		412	the specified key/value pairs as arguments.
127		413
128	=item cf::attach_global ...	414	Example, attach a minesweeper attachment to the given object, making it a
		415	10x10 minesweeper game:
129		416
130	Attach handlers for global events.	417	$obj->attach (minesweeper => width => 10, height => 10);
131		418
132	This and all following C<attach_*>-functions expect any number of the	419	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	420
		421	Checks wether the named attachment is currently attached to the object.
		422
		423	=item cf::CLASS->attach ...
		424
		425	=item cf::CLASS->detach ...
		426
		427	Define an anonymous attachment and attach it to all objects of the given
		428	CLASS. See the next function for an explanation of its arguments.
		429
		430	You can attach to global events by using the C<cf::global> class.
		431
		432	Example, log all player logins:
		433
		434	cf::player->attach (
		435	on_login => sub {
		436	my ($pl) = @_;
		437	...
		438	},
		439	);
		440
		441	Example, attach to the jeweler skill:
		442
		443	cf::object->attach (
		444	type => cf::SKILL,
		445	subtype => cf::SK_JEWELER,
		446	on_use_skill => sub {
		447	my ($sk, $ob, $part, $dir, $msg) = @_;
		448	...
		449	},
		450	);
		451
		452	=item cf::CLASS::attachment $name, ...
		453
		454	Register an attachment by C<$name> through which attachable objects of the
		455	given CLASS can refer to this attachment.
		456
		457	Some classes such as crossfire maps and objects can specify attachments
		458	that are attached at load/instantiate time, thus the need for a name.
		459
		460	These calls expect any number of the following handler/hook descriptions:
134		461
135	=over 4	462	=over 4
136		463
137	=item prio => $number	464	=item prio => $number
138		465
…		…
140	by another C<prio> setting). Lower priority handlers get executed	467	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	468	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	469	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	470	unless you know what you are doing.
144		471
		472	=item type => $type
		473
		474	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		475	given type of objects only (the additional parameter C<subtype> can be
		476	used to further limit to the given subtype).
		477
145	=item on_I<event> => \&cb	478	=item on_I<event> => \&cb
146		479
147	Call the given code reference whenever the named event happens (event is	480	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	481	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	482	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	491	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	492	object/class are recognised.
160		493
161	=back	494	=back
162		495
163	=item cf::attach_to_type $object_type, $subtype, ...	496	Example, define an attachment called "sockpuppet" that calls the given
		497	event handler when a monster attacks:
164		498
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	499	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	500	on_skill_attack => sub {
167	type.	501	my ($self, $victim) = @_;
		502	...
		503	}
		504	}
168		505
169	=item cf::attach_to_objects ...	506	=item $attachable->valid
170		507
171	Attach handlers to all objects. Do not use this except for debugging or	508	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	509	C-level object still exists. If you try to access an object that has no
173	the game.	510	valid C counterpart anymore you get an exception at runtime. This method
174		511	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	512	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 $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		513
193	=cut	514	=cut
194		515
195	# the following variables are defined in .xs and must not be re-created	516	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	517	our @CB_GLOBAL = (); # registry for all global events
		518	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	519	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	520	our @CB_PLAYER = ();
		521	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	522	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	523	our @CB_MAP = ();
201		524
202	my %attachment;	525	my %attachment;
203		526
204	sub _attach_cb($\%$$$) {	527	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	528	my ($registry, $event, $prio, $cb) = @_;
206		529
207	use sort 'stable';	530	use sort 'stable';
208		531
209	$cb = [$prio, $cb];	532	$cb = [$prio, $cb];
210		533
211	@{$registry->[$event]} = sort	534	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	535	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	536	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	537	}
		538
		539	# hack
		540	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		541
218	# attach handles attaching event callbacks	542	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	543	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	544	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	545	sub _attach {
222	my ($registry, $klass, @arg) = @_;	546	my ($registry, $klass, @arg) = @_;
223		547
		548	my $object_type;
224	my $prio = 0;	549	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;	550	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		551
		552	#TODO: get rid of this hack
		553	if ($attachable_klass{$klass}) {
		554	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		555	}
232		556
233	while (@arg) {	557	while (@arg) {
234	my $type = shift @arg;	558	my $type = shift @arg;
235		559
236	if ($type eq "prio") {	560	if ($type eq "prio") {
237	$prio = shift @arg;	561	$prio = shift @arg;
238		562
		563	} elsif ($type eq "type") {
		564	$object_type = shift @arg;
		565	$registry = $CB_TYPE[$object_type] ||= [];
		566
		567	} elsif ($type eq "subtype") {
		568	defined $object_type or Carp::croak "subtype specified without type";
		569	my $object_subtype = shift @arg;
		570	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		571
239	} elsif ($type eq "package") {	572	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	573	my $pkg = shift @arg;
241		574
242	while (my ($name, $id) = each %cb_id) {	575	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	576	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	577	_attach_cb $registry, $id, $prio, $cb;
245	}	578	}
246	}	579	}
247		580
248	} elsif (exists $cb_id{$type}) {	581	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	582	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		583
251	} elsif (ref $type) {	584	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	585	warn "attaching objects not supported, ignoring.\n";
253		586
254	} else {	587	} else {
255	shift @arg;	588	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	589	warn "attach argument '$type' not supported, ignoring.\n";
257	}	590	}
258	}	591	}
259
260	\%undo
261	}	592	}
262		593
263	sub _attach_attachment {	594	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	595	my ($obj, $name, %arg) = @_;
265		596
266	my $res;	597	return if exists $obj->{_attachment}{$name};
267		598
268	if (my $attach = $attachment{$name}) {	599	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	600	my $registry = $obj->registry;
270		601
271	for (@$attach) {	602	for (@$attach) {
272	my ($klass, @attach) = @$_;	603	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	604	_attach $registry, $klass, @attach;
274	}	605	}
275		606
276	$obj->{$name} = \%arg;	607	$obj->{$name} = \%arg;
277	} else {	608	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	609	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	610	}
280		611
281	$obj->{_attachment}{$name} = undef;	612	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	613	}
286		614
287	*cf::object::attach =	615	sub cf::attachable::attach {
288	*cf::player::attach =	616	if (ref $_[0]) {
289	*cf::map::attach = sub {	617	_object_attach @_;
290	my ($obj, $name, %arg) = @_;	618	} else {
291		619	_attach shift->_attach_registry, @_;
292	_attach_attachment $obj, $name, %arg;	620	}
293	}	621	};
294		622
295	# all those should be optimised	623	# all those should be optimised
296	*cf::object::detach =	624	sub cf::attachable::detach {
297	*cf::player::detach =
298	*cf::map::detach = sub {
299	my ($obj, $name) = @_;	625	my ($obj, $name) = @_;
300		626
		627	if (ref $obj) {
301	delete $obj->{_attachment}{$name};	628	delete $obj->{_attachment}{$name};
302	reattach $obj;	629	reattach ($obj);
		630	} else {
		631	Carp::croak "cannot, currently, detach class attachments";
		632	}
303	};	633	};
304		634
305	sub attach_global {	635	sub cf::attachable::attached {
306	_attach @CB_GLOBAL, KLASS_GLOBAL, @_	636	my ($obj, $name) = @_;
307	}
308		637
309	sub attach_to_type {	638	exists $obj->{_attachment}{$name}
310	my $type = shift;
311	my $subtype = shift;
312
313	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
314	}	639	}
315		640
316	sub attach_to_objects {	641	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
317	_attach @CB_OBJECT, KLASS_OBJECT, @_	642	eval "#line " . __LINE__ . " 'cf.pm'
318	}	643	sub cf::\L$klass\E::_attach_registry {
		644	(\\\@CB_$klass, KLASS_$klass)
		645	}
319		646
320	sub attach_to_players {	647	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;	648	my \$name = shift;
330		649
331	$attachment{$name} = [[KLASS_OBJECT, @_]];
332	}
333
334	sub register_map_attachment {
335	my $name = shift;
336
337	$attachment{$name} = [[KLASS_MAP, @_]];	650	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		651	}
		652	";
		653	die if $@;
338	}	654	}
339		655
340	our $override;	656	our $override;
341	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	657	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
342		658
…		…
356	for (@$callbacks) {	672	for (@$callbacks) {
357	eval { &{$_->[1]} };	673	eval { &{$_->[1]} };
358		674
359	if ($@) {	675	if ($@) {
360	warn "$@";	676	warn "$@";
361	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	677	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
362	override;	678	override;
363	}	679	}
364		680
365	return 1 if $override;	681	return 1 if $override;
366	}	682	}
367		683
368	0	684	0
369	}	685	}
		686
		687	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		688
		689	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		690
		691	Generate an object-specific event with the given arguments.
		692
		693	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		694	removed in future versions), and there is no public API to access override
		695	results (if you must, access C<@cf::invoke_results> directly).
		696
		697	=back
		698
		699	=cut
370		700
371	#############################################################################	701	#############################################################################
372	# object support	702	# object support
373		703
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 {	704	sub reattach {
		705	# basically do the same as instantiate, without calling instantiate
388	my ($obj) = @_;	706	my ($obj) = @_;
		707
389	my $registry = $obj->registry;	708	my $registry = $obj->registry;
390		709
391	@$registry = ();	710	@$registry = ();
392		711
393	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	712	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
394		713
395	for my $name (keys %{ $obj->{_attachment} || {} }) {	714	for my $name (keys %{ $obj->{_attachment} || {} }) {
396	if (my $attach = $attachment{$name}) {	715	if (my $attach = $attachment{$name}) {
397	for (@$attach) {	716	for (@$attach) {
398	my ($klass, @attach) = @$_;	717	my ($klass, @attach) = @$_;
399	_attach @$registry, $klass, @attach;	718	_attach $registry, $klass, @attach;
400	}	719	}
401	} else {	720	} else {
402	warn "object uses attachment '$name' that is not available, postponing.\n";	721	warn "object uses attachment '$name' that is not available, postponing.\n";
403	}	722	}
404	}	723	}
405	}	724	}
406		725
407	sub object_freezer_save {	726	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,	727	prio => -1000000,
		728	on_instantiate => sub {
		729	my ($obj, $data) = @_;
		730
		731	$data = from_json $data;
		732
		733	for (@$data) {
		734	my ($name, $args) = @$_;
		735
		736	$obj->attach ($name, %{$args || {} });
		737	}
		738	},
		739	on_reattach => \&reattach,
435	on_clone => sub {	740	on_clone => sub {
436	my ($src, $dst) = @_;	741	my ($src, $dst) = @_;
437		742
438	@{$dst->registry} = @{$src->registry};	743	@{$dst->registry} = @{$src->registry};
439		744
440	%$dst = %$src;	745	%$dst = %$src;
441		746
442	%{$dst->{_attachment}} = %{$src->{_attachment}}	747	%{$dst->{_attachment}} = %{$src->{_attachment}}
443	if exists $src->{_attachment};	748	if exists $src->{_attachment};
444	},	749	},
445	;	750	);
		751
		752	sub object_freezer_save {
		753	my ($filename, $rdata, $objs) = @_;
		754
		755	sync_job {
		756	if (length $$rdata) {
		757	warn sprintf "saving %s (%d,%d)\n",
		758	$filename, length $$rdata, scalar @$objs;
		759
		760	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		761	chmod SAVE_MODE, $fh;
		762	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		763	aio_fsync $fh;
		764	close $fh;
		765
		766	if (@$objs) {
		767	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		768	chmod SAVE_MODE, $fh;
		769	my $data = Storable::nfreeze { version => 1, objs => $objs };
		770	aio_write $fh, 0, (length $data), $data, 0;
		771	aio_fsync $fh;
		772	close $fh;
		773	aio_rename "$filename.pst~", "$filename.pst";
		774	}
		775	} else {
		776	aio_unlink "$filename.pst";
		777	}
		778
		779	aio_rename "$filename~", $filename;
		780	} else {
		781	warn "FATAL: $filename~: $!\n";
		782	}
		783	} else {
		784	aio_unlink $filename;
		785	aio_unlink "$filename.pst";
		786	}
		787	}
		788	}
		789
		790	sub object_freezer_as_string {
		791	my ($rdata, $objs) = @_;
		792
		793	use Data::Dumper;
		794
		795	$$rdata . Dumper $objs
		796	}
		797
		798	sub object_thawer_load {
		799	my ($filename) = @_;
		800
		801	my ($data, $av);
		802
		803	(aio_load $filename, $data) >= 0
		804	or return;
		805
		806	unless (aio_stat "$filename.pst") {
		807	(aio_load "$filename.pst", $av) >= 0
		808	or return;
		809	$av = eval { (Storable::thaw <$av>)->{objs} };
		810	}
		811
		812	return ($data, $av);
		813	}
446		814
447	#############################################################################	815	#############################################################################
448	# old plug-in events	816	# command handling &c
449		817
450	sub inject_event {	818	=item cf::register_command $name => \&callback($ob,$args);
451	my $extension = shift;
452	my $event_code = shift;
453		819
454	my $cb = $hook[$event_code]{$extension}	820	Register a callback for execution when the client sends the user command
455	or return;	821	$name.
456		822
457	&$cb	823	=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, $params);
474	}
475
476	-1
477	}
478		824
479	sub register_command {	825	sub register_command {
480	my ($name, $time, $cb) = @_;	826	my ($name, $cb) = @_;
481		827
482	my $caller = caller;	828	my $caller = caller;
483	#warn "registering command '$name/$time' to '$caller'";	829	#warn "registering command '$name/$time' to '$caller'";
484		830
485	push @{ $command{$name} }, [$time, $cb, $caller];	831	push @{ $COMMAND{$name} }, [$caller, $cb];
486	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
487	}	832	}
		833
		834	=item cf::register_extcmd $name => \&callback($pl,$packet);
		835
		836	Register a callbackf ro execution when the client sends an extcmd packet.
		837
		838	If the callback returns something, it is sent back as if reply was being
		839	called.
		840
		841	=cut
488		842
489	sub register_extcmd {	843	sub register_extcmd {
490	my ($name, $cb) = @_;	844	my ($name, $cb) = @_;
491		845
492	my $caller = caller;	846	my $caller = caller;
493	#warn "registering extcmd '$name' to '$caller'";	847	#warn "registering extcmd '$name' to '$caller'";
494		848
495	$extcmd{$name} = [$cb, $caller];	849	$EXTCMD{$name} = [$cb, $caller];
496	}	850	}
		851
		852	cf::player->attach (
		853	on_command => sub {
		854	my ($pl, $name, $params) = @_;
		855
		856	my $cb = $COMMAND{$name}
		857	or return;
		858
		859	for my $cmd (@$cb) {
		860	$cmd->[1]->($pl->ob, $params);
		861	}
		862
		863	cf::override;
		864	},
		865	on_extcmd => sub {
		866	my ($pl, $buf) = @_;
		867
		868	my $msg = eval { from_json $buf };
		869
		870	if (ref $msg) {
		871	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		872	if (my %reply = $cb->[0]->($pl, $msg)) {
		873	$pl->ext_reply ($msg->{msgid}, %reply);
		874	}
		875	}
		876	} else {
		877	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		878	}
		879
		880	cf::override;
		881	},
		882	);
497		883
498	sub register {	884	sub register {
499	my ($base, $pkg) = @_;	885	my ($base, $pkg) = @_;
500		886
501	#TODO	887	#TODO
…		…
520	. "#line 1 \"$path\"\n{\n"	906	. "#line 1 \"$path\"\n{\n"
521	. (do { local $/; <$fh> })	907	. (do { local $/; <$fh> })
522	. "\n};\n1";	908	. "\n};\n1";
523		909
524	eval $source	910	eval $source
525	or die "$path: $@";	911	or die $@ ? "$path: $@\n"
		912	: "extension disabled.\n";
526		913
527	push @exts, $pkg;	914	push @exts, $pkg;
528	$ext_pkg{$base} = $pkg;	915	$ext_pkg{$base} = $pkg;
529		916
530	# no strict 'refs';	917	# no strict 'refs';
…		…
543	# for my $idx (0 .. $#PLUGIN_EVENT) {	930	# for my $idx (0 .. $#PLUGIN_EVENT) {
544	# delete $hook[$idx]{$pkg};	931	# delete $hook[$idx]{$pkg};
545	# }	932	# }
546		933
547	# remove commands	934	# remove commands
548	for my $name (keys %command) {	935	for my $name (keys %COMMAND) {
549	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	936	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
550		937
551	if (@cb) {	938	if (@cb) {
552	$command{$name} = \@cb;	939	$COMMAND{$name} = \@cb;
553	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
554	} else {	940	} else {
555	delete $command{$name};
556	delete $COMMAND{"$name\000"};	941	delete $COMMAND{$name};
557	}	942	}
558	}	943	}
559		944
560	# remove extcmds	945	# remove extcmds
561	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	946	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
562	delete $extcmd{$name};	947	delete $EXTCMD{$name};
563	}	948	}
564		949
565	if (my $cb = $pkg->can ("unload")) {	950	if (my $cb = $pkg->can ("unload")) {
566	eval {	951	eval {
567	$cb->($pkg);	952	$cb->($pkg);
…		…
571		956
572	Symbol::delete_package $pkg;	957	Symbol::delete_package $pkg;
573	}	958	}
574		959
575	sub load_extensions {	960	sub load_extensions {
576	my $LIBDIR = maps_directory "perl";
577
578	for my $ext (<$LIBDIR/*.ext>) {	961	for my $ext (<$LIBDIR/*.ext>) {
579	next unless -r $ext;	962	next unless -r $ext;
580	eval {	963	eval {
581	load_extension $ext;	964	load_extension $ext;
582	1	965	1
583	} or warn "$ext not loaded: $@";	966	} or warn "$ext not loaded: $@";
584	}	967	}
585	}	968	}
586		969
587	sub _perl_reload(&) {
588	my ($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	#############################################################################	970	#############################################################################
685	# load/save/clean perl data associated with a map	971	# load/save/clean perl data associated with a map
686		972
687	*cf::mapsupport::on_clean = sub {	973	*cf::mapsupport::on_clean = sub {
688	my ($map) = @_;	974	my ($map) = @_;
…		…
691	defined $path or return;	977	defined $path or return;
692		978
693	unlink "$path.pst";	979	unlink "$path.pst";
694	};	980	};
695		981
696	# old style persistent data, TODO: remove #d#
697	*cf::mapsupport::on_swapin =
698	*cf::mapsupport::on_load = sub {
699	my ($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	$map->invoke (EVENT_MAP_UPGRADE);
714	};
715
716	attach_to_maps prio => -10000, package => cf::mapsupport::;	982	cf::map->attach (prio => -10000, package => cf::mapsupport::);
717		983
718	#############################################################################	984	#############################################################################
719	# load/save perl data associated with player->ob objects	985	# load/save perl data associated with player->ob objects
720		986
721	sub all_objects(@) {	987	sub all_objects(@) {
722	@_, map all_objects ($_->inv), @_	988	@_, map all_objects ($_->inv), @_
723	}	989	}
724		990
725	attach_to_players	991	# TODO: compatibility cruft, remove when no longer needed
		992	cf::player->attach (
726	on_load => sub {	993	on_load => sub {
727	my ($pl, $path) = @_;	994	my ($pl, $path) = @_;
728		995
729	for my $o (all_objects $pl->ob) {	996	for my $o (all_objects $pl->ob) {
730	if (my $value = $o->get_ob_key_value ("_perl_data")) {	997	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
732		999
733	%$o = %{ Storable::thaw pack "H*", $value };	1000	%$o = %{ Storable::thaw pack "H*", $value };
734	}	1001	}
735	}	1002	}
736	},	1003	},
737	;	1004	);
738		1005
739	#############################################################################	1006	#############################################################################
740	# core extensions - in perl	1007
		1008	=head2 CORE EXTENSIONS
		1009
		1010	Functions and methods that extend core crossfire objects.
		1011
		1012	=head3 cf::player
		1013
		1014	=over 4
741		1015
742	=item cf::player::exists $login	1016	=item cf::player::exists $login
743		1017
744	Returns true when the given account exists.	1018	Returns true when the given account exists.
745		1019
…		…
748	sub cf::player::exists($) {	1022	sub cf::player::exists($) {
749	cf::player::find $_[0]	1023	cf::player::find $_[0]
750	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1024	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
751	}	1025	}
752		1026
		1027	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1028
		1029	Sends an ext reply to the player.
		1030
		1031	=cut
		1032
		1033	sub cf::player::ext_reply($$$%) {
		1034	my ($self, $id, %msg) = @_;
		1035
		1036	$msg{msgid} = $id;
		1037
		1038	$self->send ("ext " . to_json \%msg);
		1039	}
		1040
		1041	=back
		1042
		1043
		1044	=head3 cf::map
		1045
		1046	=over 4
		1047
		1048	=cut
		1049
		1050	package cf::map;
		1051
		1052	use Fcntl;
		1053	use Coro::AIO;
		1054
		1055	our $MAX_RESET = 7200;
		1056	our $DEFAULT_RESET = 3600;
		1057
		1058	sub generate_random_map {
		1059	my ($path, $rmp) = @_;
		1060
		1061	# mit "rum" bekleckern, nicht
		1062	cf::map::_create_random_map
		1063	$path,
		1064	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1065	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1066	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1067	$rmp->{exit_on_final_map},
		1068	$rmp->{xsize}, $rmp->{ysize},
		1069	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1070	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1071	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1072	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1073	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1074	(cf::region::find $rmp->{region})
		1075	}
		1076
		1077	# and all this just because we cannot iterate over
		1078	# all maps in C++...
		1079	sub change_all_map_light {
		1080	my ($change) = @_;
		1081
		1082	$_->change_map_light ($change) for values %cf::MAP;
		1083	}
		1084
		1085	sub try_load_header($) {
		1086	my ($path) = @_;
		1087
		1088	utf8::encode $path;
		1089	aio_open $path, O_RDONLY, 0
		1090	or return;
		1091
		1092	my $map = cf::map::new
		1093	or return;
		1094
		1095	$map->load_header ($path)
		1096	or return;
		1097
		1098	$map->{load_path} = $path;
		1099
		1100	$map
		1101	}
		1102
		1103	sub find_map {
		1104	my ($path, $origin) = @_;
		1105
		1106	#warn "find_map<$path,$origin>\n";#d#
		1107
		1108	$path = new cf::path $path, $origin && $origin->path;
		1109	my $key = $path->as_string;
		1110
		1111	$cf::MAP{$key} || do {
		1112	# do it the slow way
		1113	my $map = try_load_header $path->save_path;
		1114
		1115	if ($map) {
		1116	# safety
		1117	$map->{instantiate_time} = $cf::RUNTIME
		1118	if $map->{instantiate_time} > $cf::RUNTIME;
		1119	} else {
		1120	if (my $rmp = $path->random_map_params) {
		1121	$map = generate_random_map $key, $rmp;
		1122	} else {
		1123	$map = try_load_header $path->load_path;
		1124	}
		1125
		1126	$map or return;
		1127
		1128	$map->{load_original} = 1;
		1129	$map->{instantiate_time} = $cf::RUNTIME;
		1130	$map->instantiate;
		1131
		1132	# per-player maps become, after loading, normal maps
		1133	$map->per_player (0) if $path->{user_rel};
		1134	}
		1135
		1136	$map->path ($key);
		1137	$map->{path} = $path;
		1138	$map->last_access ($cf::RUNTIME);
		1139
		1140	if ($map->should_reset) {
		1141	$map->reset;
		1142	$map = find_map $path;
		1143	}
		1144
		1145	$cf::MAP{$key} = $map
		1146	}
		1147	}
		1148
		1149	sub load {
		1150	my ($self) = @_;
		1151
		1152	return if $self->in_memory != cf::MAP_SWAPPED;
		1153
		1154	$self->in_memory (cf::MAP_LOADING);
		1155
		1156	my $path = $self->{path};
		1157
		1158	$self->alloc;
		1159	$self->load_objects ($self->{load_path}, 1)
		1160	or return;
		1161
		1162	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1163	if delete $self->{load_original};
		1164
		1165	if (my $uniq = $path->uniq_path) {
		1166	utf8::encode $uniq;
		1167	if (aio_open $uniq, O_RDONLY, 0) {
		1168	$self->clear_unique_items;
		1169	$self->load_objects ($uniq, 0);
		1170	}
		1171	}
		1172
		1173	# now do the right thing for maps
		1174	$self->link_multipart_objects;
		1175
		1176	if ($self->{path}->is_style_map) {
		1177	$self->{deny_save} = 1;
		1178	$self->{deny_reset} = 1;
		1179	} else {
		1180	$self->fix_auto_apply;
		1181	$self->decay_objects;
		1182	$self->update_buttons;
		1183	$self->set_darkness_map;
		1184	$self->difficulty ($self->estimate_difficulty)
		1185	unless $self->difficulty;
		1186	$self->activate;
		1187	}
		1188
		1189	$self->in_memory (cf::MAP_IN_MEMORY);
		1190	}
		1191
		1192	sub load_map_sync {
		1193	my ($path, $origin) = @_;
		1194
		1195	#warn "load_map_sync<$path, $origin>\n";#d#
		1196
		1197	cf::sync_job {
		1198	my $map = cf::map::find_map $path, $origin
		1199	or return;
		1200	$map->load;
		1201	$map
		1202	}
		1203	}
		1204
		1205	sub save {
		1206	my ($self) = @_;
		1207
		1208	my $save = $self->{path}->save_path; utf8::encode $save;
		1209	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1210
		1211	$self->{last_save} = $cf::RUNTIME;
		1212
		1213	return unless $self->dirty;
		1214
		1215	$self->{load_path} = $save;
		1216
		1217	return if $self->{deny_save};
		1218
		1219	if ($uniq) {
		1220	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1221	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1222	} else {
		1223	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1224	}
		1225	}
		1226
		1227	sub swap_out {
		1228	my ($self) = @_;
		1229
		1230	return if $self->players;
		1231	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1232	return if $self->{deny_save};
		1233
		1234	$self->save;
		1235	$self->clear;
		1236	$self->in_memory (cf::MAP_SWAPPED);
		1237	}
		1238
		1239	sub reset_at {
		1240	my ($self) = @_;
		1241
		1242	# TODO: safety, remove and allow resettable per-player maps
		1243	return 1e100 if $self->{path}{user_rel};
		1244	return 1e100 if $self->{deny_reset};
		1245
		1246	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1247	my $to = $self->reset_timeout || $DEFAULT_RESET;
		1248	$to = $MAX_RESET if $to > $MAX_RESET;
		1249
		1250	$time + $to
		1251	}
		1252
		1253	sub should_reset {
		1254	my ($self) = @_;
		1255
		1256	$self->reset_at <= $cf::RUNTIME
		1257	}
		1258
		1259	sub unlink_save {
		1260	my ($self) = @_;
		1261
		1262	utf8::encode (my $save = $self->{path}->save_path);
		1263	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1264	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1265	}
		1266
		1267	sub reset {
		1268	my ($self) = @_;
		1269
		1270	return if $self->players;
		1271	return if $self->{path}{user_rel};#d#
		1272
		1273	warn "resetting map ", $self->path;#d#
		1274
		1275	delete $cf::MAP{$self->path};
		1276
		1277	$_->clear_links_to ($self) for values %cf::MAP;
		1278
		1279	$self->unlink_save;
		1280	$self->destroy;
		1281	}
		1282
		1283	sub customise_for {
		1284	my ($map, $ob) = @_;
		1285
		1286	if ($map->per_player) {
		1287	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1288	}
		1289
		1290	$map
		1291	}
		1292
		1293	sub emergency_save {
		1294	local $cf::FREEZE = 1;
		1295
		1296	warn "enter emergency map save\n";
		1297
		1298	cf::sync_job {
		1299	warn "begin emergency map save\n";
		1300	$_->save for values %cf::MAP;
		1301	};
		1302
		1303	warn "end emergency map save\n";
		1304	}
		1305
		1306	package cf;
		1307
		1308	=back
		1309
		1310
		1311	=head3 cf::object::player
		1312
		1313	=over 4
		1314
753	=item $player->reply ($npc, $msg[, $flags])	1315	=item $player_object->reply ($npc, $msg[, $flags])
754		1316
755	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1317	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	1318	can be C<undef>. Does the right thing when the player is currently in a
757	dialogue with the given NPC character.	1319	dialogue with the given NPC character.
758		1320
759	=cut	1321	=cut
760		1322
761	# rough implementation of a future "reply" method that works	1323	# rough implementation of a future "reply" method that works
762	# with dialog boxes.	1324	# with dialog boxes.
		1325	#TODO: the first argument must go, split into a $npc->reply_to ( method
763	sub cf::object::player::reply($$$;$) {	1326	sub cf::object::player::reply($$$;$) {
764	my ($self, $npc, $msg, $flags) = @_;	1327	my ($self, $npc, $msg, $flags) = @_;
765		1328
766	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1329	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
767		1330
…		…
771	$msg = $npc->name . " says: $msg" if $npc;	1334	$msg = $npc->name . " says: $msg" if $npc;
772	$self->message ($msg, $flags);	1335	$self->message ($msg, $flags);
773	}	1336	}
774	}	1337	}
775		1338
776	=item $player->ext_reply ($msgid, $msgtype, %msg)	1339	=item $player_object->may ("access")
777		1340
778	Sends an ext reply to the player.	1341	Returns wether the given player is authorized to access resource "access"
		1342	(e.g. "command_wizcast").
779		1343
780	=cut	1344	=cut
781		1345
782	sub cf::player::ext_reply($$$%) {	1346	sub cf::object::player::may {
		1347	my ($self, $access) = @_;
		1348
		1349	$self->flag (cf::FLAG_WIZ) ||
		1350	(ref $cf::CFG{"may_$access"}
		1351	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1352	: $cf::CFG{"may_$access"})
		1353	}
		1354
		1355	sub cf::object::player::enter_link {
		1356	my ($self) = @_;
		1357
		1358	return if $self->map == $LINK_MAP;
		1359
		1360	$self->{_link_pos} = [$self->map->{path}, $self->x, $self->y]
		1361	if $self->map;
		1362
		1363	$self->enter_map ($LINK_MAP, 20, 20);
		1364	$self->deactivate_recursive;
		1365	}
		1366
		1367	sub cf::object::player::leave_link {
		1368	my ($self, $map, $x, $y) = @_;
		1369
		1370	my $link_pos = delete $self->{_link_pos};
		1371
		1372	unless ($map) {
		1373	$self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1374
		1375	# restore original map position
		1376	($map, $x, $y) = @{ $link_pos || [] };
		1377	$map = cf::map::find_map $map;
		1378
		1379	unless ($map) {
		1380	($map, $x, $y) = @$EMERGENCY_POSITION;
		1381	$map = cf::map::find_map $map
		1382	or die "FATAL: cannot load emergency map\n";
		1383	}
		1384	}
		1385
		1386	($x, $y) = (-1, -1)
		1387	unless (defined $x) && (defined $y);
		1388
		1389	# use -1 or undef as default coordinates, not 0, 0
		1390	($x, $y) = ($map->enter_x, $map->enter_y)
		1391	if $x <=0 && $y <= 0;
		1392
		1393	$map->load;
		1394
		1395	$self->activate_recursive;
		1396	$self->enter_map ($map, $x, $y);
		1397	}
		1398
		1399	=item $player_object->goto_map ($map, $x, $y)
		1400
		1401	=cut
		1402
		1403	sub cf::object::player::goto_map {
		1404	my ($self, $path, $x, $y) = @_;
		1405
		1406	$self->enter_link;
		1407
		1408	(Coro::async {
		1409	$path = new cf::path $path;
		1410
		1411	my $map = cf::map::find_map $path->as_string;
		1412	$map = $map->customise_for ($self) if $map;
		1413
		1414	warn "entering ", $map->path, " at ($x, $y)\n"
		1415	if $map;
		1416
		1417	$self->leave_link ($map, $x, $y);
		1418	})->prio (1);
		1419	}
		1420
		1421	=item $player_object->enter_exit ($exit_object)
		1422
		1423	=cut
		1424
		1425	sub parse_random_map_params {
		1426	my ($spec) = @_;
		1427
		1428	my $rmp = { # defaults
		1429	xsize => 10,
		1430	ysize => 10,
		1431	};
		1432
		1433	for (split /\n/, $spec) {
		1434	my ($k, $v) = split /\s+/, $_, 2;
		1435
		1436	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1437	}
		1438
		1439	$rmp
		1440	}
		1441
		1442	sub prepare_random_map {
		1443	my ($exit) = @_;
		1444
		1445	# all this does is basically replace the /! path by
		1446	# a new random map path (?random/...) with a seed
		1447	# that depends on the exit object
		1448
		1449	my $rmp = parse_random_map_params $exit->msg;
		1450
		1451	if ($exit->map) {
		1452	$rmp->{region} = $exit->map->region_name;
		1453	$rmp->{origin_map} = $exit->map->path;
		1454	$rmp->{origin_x} = $exit->x;
		1455	$rmp->{origin_y} = $exit->y;
		1456	}
		1457
		1458	$rmp->{random_seed} ||= $exit->random_seed;
		1459
		1460	my $data = cf::to_json $rmp;
		1461	my $md5 = Digest::MD5::md5_hex $data;
		1462
		1463	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1464	aio_write $fh, 0, (length $data), $data, 0;
		1465
		1466	$exit->slaying ("?random/$md5");
		1467	$exit->msg (undef);
		1468	}
		1469	}
		1470
		1471	sub cf::object::player::enter_exit {
783	my ($self, $id, %msg) = @_;	1472	my ($self, $exit) = @_;
784		1473
785	$msg{msgid} = $id;	1474	return unless $self->type == cf::PLAYER;
786		1475
787	$self->send ("ext " . to_json \%msg);	1476	$self->enter_link;
788	}
789		1477
790	#############################################################################	1478	(Coro::async {
791	# map scripting support	1479	unless (eval {
		1480
		1481	prepare_random_map $exit
		1482	if $exit->slaying eq "/!";
		1483
		1484	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1485	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1486
		1487	1;
		1488	}) {
		1489	$self->message ("Something went wrong deep within the crossfire server. "
		1490	. "I'll try to bring you back to the map you were before. "
		1491	. "Please report this to the dungeon master",
		1492	cf::NDI_UNIQUE | cf::NDI_RED);
		1493
		1494	warn "ERROR in enter_exit: $@";
		1495	$self->leave_link;
		1496	}
		1497	})->prio (1);
		1498	}
		1499
		1500	=head3 cf::client
		1501
		1502	=over 4
		1503
		1504	=item $client->send_drawinfo ($text, $flags)
		1505
		1506	Sends a drawinfo packet to the client. Circumvents output buffering so
		1507	should not be used under normal circumstances.
		1508
		1509	=cut
		1510
		1511	sub cf::client::send_drawinfo {
		1512	my ($self, $text, $flags) = @_;
		1513
		1514	utf8::encode $text;
		1515	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1516	}
		1517
		1518
		1519	=item $success = $client->query ($flags, "text", \&cb)
		1520
		1521	Queues a query to the client, calling the given callback with
		1522	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1523	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1524
		1525	Queries can fail, so check the return code. Or don't, as queries will become
		1526	reliable at some point in the future.
		1527
		1528	=cut
		1529
		1530	sub cf::client::query {
		1531	my ($self, $flags, $text, $cb) = @_;
		1532
		1533	return unless $self->state == ST_PLAYING
		1534	|| $self->state == ST_SETUP
		1535	|| $self->state == ST_CUSTOM;
		1536
		1537	$self->state (ST_CUSTOM);
		1538
		1539	utf8::encode $text;
		1540	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1541
		1542	$self->send_packet ($self->{query_queue}[0][0])
		1543	if @{ $self->{query_queue} } == 1;
		1544	}
		1545
		1546	cf::client->attach (
		1547	on_reply => sub {
		1548	my ($ns, $msg) = @_;
		1549
		1550	# this weird shuffling is so that direct followup queries
		1551	# get handled first
		1552	my $queue = delete $ns->{query_queue};
		1553
		1554	(shift @$queue)->[1]->($msg);
		1555
		1556	push @{ $ns->{query_queue} }, @$queue;
		1557
		1558	if (@{ $ns->{query_queue} } == @$queue) {
		1559	if (@$queue) {
		1560	$ns->send_packet ($ns->{query_queue}[0][0]);
		1561	} else {
		1562	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1563	}
		1564	}
		1565	},
		1566	);
		1567
		1568	=item $client->coro (\&cb)
		1569
		1570	Create a new coroutine, running the specified callback. The coroutine will
		1571	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1572	or loss of connection).
		1573
		1574	=cut
		1575
		1576	sub cf::client::coro {
		1577	my ($self, $cb) = @_;
		1578
		1579	my $coro; $coro = async {
		1580	eval {
		1581	$cb->();
		1582	};
		1583	warn $@ if $@;
		1584	};
		1585
		1586	$coro->on_destroy (sub {
		1587	delete $self->{_coro}{$coro+0};
		1588	});
		1589
		1590	$self->{_coro}{$coro+0} = $coro;
		1591
		1592	$coro
		1593	}
		1594
		1595	cf::client->attach (
		1596	on_destroy => sub {
		1597	my ($ns) = @_;
		1598
		1599	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1600	},
		1601	);
		1602
		1603	=back
		1604
		1605
		1606	=head2 SAFE SCRIPTING
		1607
		1608	Functions that provide a safe environment to compile and execute
		1609	snippets of perl code without them endangering the safety of the server
		1610	itself. Looping constructs, I/O operators and other built-in functionality
		1611	is not available in the safe scripting environment, and the number of
		1612	functions and methods that can be called is greatly reduced.
		1613
		1614	=cut
792		1615
793	our $safe = new Safe "safe";	1616	our $safe = new Safe "safe";
794	our $safe_hole = new Safe::Hole;	1617	our $safe_hole = new Safe::Hole;
795		1618
796	$SIG{FPE} = 'IGNORE';	1619	$SIG{FPE} = 'IGNORE';
797		1620
798	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	1621	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
799		1622
800	# here we export the classes and methods available to script code	1623	# here we export the classes and methods available to script code
801		1624
		1625	=pod
		1626
		1627	The following fucntions and emthods are available within a safe environment:
		1628
		1629	cf::object contr pay_amount pay_player map
		1630	cf::object::player player
		1631	cf::player peaceful
		1632	cf::map trigger
		1633
		1634	=cut
		1635
802	for (	1636	for (
803	["cf::object" => qw(contr pay_amount pay_player)],	1637	["cf::object" => qw(contr pay_amount pay_player map)],
804	["cf::object::player" => qw(player)],	1638	["cf::object::player" => qw(player)],
805	["cf::player" => qw(peaceful)],	1639	["cf::player" => qw(peaceful)],
		1640	["cf::map" => qw(trigger)],
806	) {	1641	) {
807	no strict 'refs';	1642	no strict 'refs';
808	my ($pkg, @funs) = @$_;	1643	my ($pkg, @funs) = @$_;
809	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1644	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
810	for @funs;	1645	for @funs;
811	}	1646	}
		1647
		1648	=over 4
		1649
		1650	=item @retval = safe_eval $code, [var => value, ...]
		1651
		1652	Compiled and executes the given perl code snippet. additional var/value
		1653	pairs result in temporary local (my) scalar variables of the given name
		1654	that are available in the code snippet. Example:
		1655
		1656	my $five = safe_eval '$first + $second', first => 1, second => 4;
		1657
		1658	=cut
812		1659
813	sub safe_eval($;@) {	1660	sub safe_eval($;@) {
814	my ($code, %vars) = @_;	1661	my ($code, %vars) = @_;
815		1662
816	my $qcode = $code;	1663	my $qcode = $code;
…		…
839	}	1686	}
840		1687
841	wantarray ? @res : $res[0]	1688	wantarray ? @res : $res[0]
842	}	1689	}
843		1690
		1691	=item cf::register_script_function $function => $cb
		1692
		1693	Register a function that can be called from within map/npc scripts. The
		1694	function should be reasonably secure and should be put into a package name
		1695	like the extension.
		1696
		1697	Example: register a function that gets called whenever a map script calls
		1698	C<rent::overview>, as used by the C<rent> extension.
		1699
		1700	cf::register_script_function "rent::overview" => sub {
		1701	...
		1702	};
		1703
		1704	=cut
		1705
844	sub register_script_function {	1706	sub register_script_function {
845	my ($fun, $cb) = @_;	1707	my ($fun, $cb) = @_;
846		1708
847	no strict 'refs';	1709	no strict 'refs';
848	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1710	*{"safe::$fun"} = $safe_hole->wrap ($cb);
849	}	1711	}
850		1712
		1713	=back
		1714
		1715	=cut
		1716
		1717	#############################################################################
		1718
		1719	=head2 EXTENSION DATABASE SUPPORT
		1720
		1721	Crossfire maintains a very simple database for extension use. It can
		1722	currently store anything that can be serialised using Storable, which
		1723	excludes objects.
		1724
		1725	The parameter C<$family> should best start with the name of the extension
		1726	using it, it should be unique.
		1727
		1728	=over 4
		1729
		1730	=item $hashref = cf::db_get $family
		1731
		1732	Return a hashref for use by the extension C<$family>, which can be
		1733	modified. After modifications, you have to call C<cf::db_dirty> or
		1734	C<cf::db_sync>.
		1735
		1736	=item $value = cf::db_get $family => $key
		1737
		1738	Returns a single value from the database
		1739
		1740	=item cf::db_put $family => $hashref
		1741
		1742	Stores the given family hashref into the database. Updates are delayed, if
		1743	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1744
		1745	=item cf::db_put $family => $key => $value
		1746
		1747	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1748	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1749
		1750	=item cf::db_dirty
		1751
		1752	Marks the database as dirty, to be updated at a later time.
		1753
		1754	=item cf::db_sync
		1755
		1756	Immediately write the database to disk I<if it is dirty>.
		1757
		1758	=cut
		1759
		1760	our $DB;
		1761
		1762	{
		1763	my $path = cf::localdir . "/database.pst";
		1764
		1765	sub db_load() {
		1766	warn "loading database $path\n";#d# remove later
		1767	$DB = stat $path ? Storable::retrieve $path : { };
		1768	}
		1769
		1770	my $pid;
		1771
		1772	sub db_save() {
		1773	warn "saving database $path\n";#d# remove later
		1774	waitpid $pid, 0 if $pid;
		1775	if (0 == ($pid = fork)) {
		1776	$DB->{_meta}{version} = 1;
		1777	Storable::nstore $DB, "$path~";
		1778	rename "$path~", $path;
		1779	cf::_exit 0 if defined $pid;
		1780	}
		1781	}
		1782
		1783	my $dirty;
		1784
		1785	sub db_sync() {
		1786	db_save if $dirty;
		1787	undef $dirty;
		1788	}
		1789
		1790	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1791	db_sync;
		1792	});
		1793
		1794	sub db_dirty() {
		1795	$dirty = 1;
		1796	$idle->start;
		1797	}
		1798
		1799	sub db_get($;$) {
		1800	@_ >= 2
		1801	? $DB->{$_[0]}{$_[1]}
		1802	: ($DB->{$_[0]} ||= { })
		1803	}
		1804
		1805	sub db_put($$;$) {
		1806	if (@_ >= 3) {
		1807	$DB->{$_[0]}{$_[1]} = $_[2];
		1808	} else {
		1809	$DB->{$_[0]} = $_[1];
		1810	}
		1811	db_dirty;
		1812	}
		1813
		1814	cf::global->attach (
		1815	prio => 10000,
		1816	on_cleanup => sub {
		1817	db_sync;
		1818	},
		1819	);
		1820	}
		1821
851	#############################################################################	1822	#############################################################################
852	# the server's main()	1823	# the server's main()
853		1824
		1825	sub cfg_load {
		1826	open my $fh, "<:utf8", cf::confdir . "/config"
		1827	or return;
		1828
		1829	local $/;
		1830	*CFG = YAML::Syck::Load <$fh>;
		1831	}
		1832
854	sub main {	1833	sub main {
		1834	# we must not ever block the main coroutine
		1835	local $Coro::idle = sub {
		1836	Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#
		1837	(Coro::unblock_sub {
		1838	Event::one_event;
		1839	})->();
		1840	};
		1841
		1842	cfg_load;
		1843	db_load;
		1844	load_extensions;
855	Event::loop;	1845	Event::loop;
856	}	1846	}
857		1847
858	#############################################################################	1848	#############################################################################
859	# initialisation	1849	# initialisation
860		1850
		1851	sub reload() {
		1852	# can/must only be called in main
		1853	if ($Coro::current != $Coro::main) {
		1854	warn "can only reload from main coroutine\n";
		1855	return;
		1856	}
		1857
		1858	warn "reloading...";
		1859
		1860	local $FREEZE = 1;
		1861	cf::emergency_save;
		1862
		1863	eval {
		1864	# if anything goes wrong in here, we should simply crash as we already saved
		1865
		1866	# cancel all watchers
		1867	for (Event::all_watchers) {
		1868	$_->cancel if $_->data & WF_AUTOCANCEL;
		1869	}
		1870
		1871	# cancel all extension coros
		1872	$_->cancel for values %EXT_CORO;
		1873	%EXT_CORO = ();
		1874
		1875	# unload all extensions
		1876	for (@exts) {
		1877	warn "unloading <$_>";
		1878	unload_extension $_;
		1879	}
		1880
		1881	# unload all modules loaded from $LIBDIR
		1882	while (my ($k, $v) = each %INC) {
		1883	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1884
		1885	warn "removing <$k>";
		1886	delete $INC{$k};
		1887
		1888	$k =~ s/\.pm$//;
		1889	$k =~ s/\//::/g;
		1890
		1891	if (my $cb = $k->can ("unload_module")) {
		1892	$cb->();
		1893	}
		1894
		1895	Symbol::delete_package $k;
		1896	}
		1897
		1898	# sync database to disk
		1899	cf::db_sync;
		1900	IO::AIO::flush;
		1901
		1902	# get rid of safe::, as good as possible
		1903	Symbol::delete_package "safe::$_"
		1904	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		1905
		1906	# remove register_script_function callbacks
		1907	# TODO
		1908
		1909	# unload cf.pm "a bit"
		1910	delete $INC{"cf.pm"};
		1911
		1912	# don't, removes xs symbols, too,
		1913	# and global variables created in xs
		1914	#Symbol::delete_package __PACKAGE__;
		1915
		1916	# reload cf.pm
		1917	warn "reloading cf.pm";
		1918	require cf;
		1919	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		1920
		1921	# load config and database again
		1922	cf::cfg_load;
		1923	cf::db_load;
		1924
		1925	# load extensions
		1926	warn "load extensions";
		1927	cf::load_extensions;
		1928
		1929	# reattach attachments to objects
		1930	warn "reattach";
		1931	_global_reattach;
		1932	};
		1933
		1934	if ($@) {
		1935	warn $@;
		1936	warn "error while reloading, exiting.";
		1937	exit 1;
		1938	}
		1939
		1940	warn "reloaded successfully";
		1941	};
		1942
		1943	#############################################################################
		1944
		1945	unless ($LINK_MAP) {
		1946	$LINK_MAP = cf::map::new;
		1947
		1948	$LINK_MAP->width (41);
		1949	$LINK_MAP->height (41);
		1950	$LINK_MAP->alloc;
		1951	$LINK_MAP->path ("{link}");
		1952	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		1953	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		1954
		1955	# dirty hack because... archetypes are not yet loaded
		1956	Event->timer (
		1957	after => 2,
		1958	cb => sub {
		1959	$_[0]->w->cancel;
		1960
		1961	# provide some exits "home"
		1962	my $exit = cf::object::new "exit";
		1963
		1964	$exit->slaying ($EMERGENCY_POSITION->[0]);
		1965	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		1966	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		1967
		1968	$LINK_MAP->insert ($exit->clone, 19, 19);
		1969	$LINK_MAP->insert ($exit->clone, 19, 20);
		1970	$LINK_MAP->insert ($exit->clone, 19, 21);
		1971	$LINK_MAP->insert ($exit->clone, 20, 19);
		1972	$LINK_MAP->insert ($exit->clone, 20, 21);
		1973	$LINK_MAP->insert ($exit->clone, 21, 19);
		1974	$LINK_MAP->insert ($exit->clone, 21, 20);
		1975	$LINK_MAP->insert ($exit->clone, 21, 21);
		1976
		1977	$exit->destroy;
		1978	});
		1979
		1980	$LINK_MAP->{deny_save} = 1;
		1981	$LINK_MAP->{deny_reset} = 1;
		1982
		1983	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		1984	}
		1985
861	register "<global>", __PACKAGE__;	1986	register "<global>", __PACKAGE__;
862		1987
		1988	register_command "reload" => sub {
		1989	my ($who, $arg) = @_;
		1990
		1991	if ($who->flag (FLAG_WIZ)) {
		1992	$who->message ("start of reload.");
		1993	reload;
		1994	$who->message ("end of reload.");
		1995	}
		1996	};
		1997
863	unshift @INC, $LIBDIR;	1998	unshift @INC, $LIBDIR;
864		1999
865	load_extensions;
866
867	$TICK_WATCHER = Event->timer (	2000	$TICK_WATCHER = Event->timer (
		2001	reentrant => 0,
868	prio => 1,	2002	prio => 0,
869	at => $NEXT_TICK || 1,	2003	at => $NEXT_TICK || $TICK,
		2004	data => WF_AUTOCANCEL,
870	cb => sub {	2005	cb => sub {
		2006	unless ($FREEZE) {
871	cf::server_tick; # one server iteration	2007	cf::server_tick; # one server iteration
		2008	$RUNTIME += $TICK;
		2009	}
872		2010
873	my $NOW = Event::time;
874	$NEXT_TICK += $TICK;	2011	$NEXT_TICK += $TICK;
875		2012
876	# if we are delayed by four ticks, skip them all	2013	# if we are delayed by four ticks or more, skip them all
877	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2014	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
878		2015
879	$TICK_WATCHER->at ($NEXT_TICK);	2016	$TICK_WATCHER->at ($NEXT_TICK);
880	$TICK_WATCHER->start;	2017	$TICK_WATCHER->start;
881	},	2018	},
882	);	2019	);
883		2020
884	_reload_2;	2021	IO::AIO::max_poll_time $TICK * 0.2;
		2022
		2023	Event->io (
		2024	fd => IO::AIO::poll_fileno,
		2025	poll => 'r',
		2026	prio => 5,
		2027	data => WF_AUTOCANCEL,
		2028	cb => \&IO::AIO::poll_cb,
		2029	);
		2030
		2031	Event->timer (
		2032	data => WF_AUTOCANCEL,
		2033	after => 0,
		2034	interval => 10,
		2035	cb => sub {
		2036	(Coro::unblock_sub {
		2037	write_runtime
		2038	or warn "ERROR: unable to write runtime file: $!";
		2039	})->();
		2040	},
		2041	);
885		2042
886	1	2043	1
887		2044

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