server/lib/cf.pm

package cf;

use Symbol;
use List::Util;
use Storable;
use Opcode;
use Safe;
use Safe::Hole;

use Time::HiRes;
use Event;
$Event::Eval = 1; # no idea why this is required, but it is

use strict;

our %COMMAND;
our @EVENT;
our @PLUGIN_EVENT;
our %PROP_TYPE;
our %PROP_IDX;
our $LIBDIR = maps_directory "perl";

our $TICK = MAX_TIME * 1e-6;
our $TICK_WATCHER;
our $NEXT_TICK;

BEGIN {
   @PLUGIN_EVENT = map lc, @PLUGIN_EVENT;

   *CORE::GLOBAL::warn = sub {
      my $msg = join "", @_;
      $msg .= "\n"
         unless $msg =~ /\n$/;

      print STDERR "cfperl: $msg";
      LOG llevError, "cfperl: $msg";
   };
}

my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!

# generate property mutators
sub prop_gen {
   my ($prefix, $class) = @_;

   no strict 'refs';

   for my $prop (keys %PROP_TYPE) {
      $prop =~ /^\Q$prefix\E_(.*$)/ or next;
      my $sub = lc $1;

      my $type = $PROP_TYPE{$prop};
      my $idx  = $PROP_IDX {$prop};

      *{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
         $_[0]->get_property ($type, $idx)
      };

      *{"$class\::set_$sub"} = sub {
         $_[0]->set_property ($type, $idx, $_[1]);
      } unless $ignore_set{$prop};
   }
}

# auto-generate most of the API

prop_gen OBJECT_PROP => "cf::object";
# CFAPI_OBJECT_ANIMATION?
prop_gen PLAYER_PROP => "cf::object::player";

prop_gen MAP_PROP    => "cf::map";
prop_gen ARCH_PROP   => "cf::arch";

# guessed hierarchies

@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
@ext::cf::object::map::ISA    = @cf::object::map::ISA    = 'cf::object';

# we bless all objects into derived classes to force a method lookup
# within the Safe compartment.
for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
   no strict 'refs';
   @{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
}

$Event::DIED = sub {
   warn "error in event callback: @_";
};

my %ext_pkg;
my @exts;
my @hook;
my %command;
my %extcmd;

sub inject_event {
   my $extension = shift;
   my $event_code = shift;

   my $cb = $hook[$event_code]{$extension}
      or return;

   &$cb
}

sub inject_global_event {
   my $event = shift;

   my $cb = $hook[$event]
      or return;

   List::Util::max map &$_, values %$cb
}

sub inject_command {
   my ($name, $obj, $params) = @_;

   for my $cmd (@{ $command{$name} }) {
      $cmd->[1]->($obj, $params);
   }

   -1
}

sub register_command {
   my ($name, $time, $cb) = @_;

   my $caller = caller;
   #warn "registering command '$name/$time' to '$caller'";

   push @{ $command{$name} }, [$time, $cb, $caller];
   $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
}

sub register_extcmd {
   my ($name, $cb) = @_;

   my $caller = caller;
   #warn "registering extcmd '$name' to '$caller'";

   $extcmd{$name} = [$cb, $caller];
}

sub register {
   my ($base, $pkg) = @_;

   for my $idx (0 .. $#PLUGIN_EVENT) {
      if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {
         #warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";
         $hook[$idx]{$base} = $ref;
      }
   }
}

sub load_extension {
   my ($path) = @_;

   $path =~ /([^\/\\]+)\.ext$/ or die "$path";
   my $base = $1;
   my $pkg = $1;
   $pkg =~ s/[^[:word:]]/_/g;
   $pkg = "cf::ext::$pkg";

   warn "loading '$path' into '$pkg'\n";

   open my $fh, "<:utf8", $path
      or die "$path: $!";

   my $source =
      "package $pkg; use strict; use utf8;\n"
      . "#line 1 \"$path\"\n{\n"
      . (do { local $/; <$fh> })
      . "\n};\n1";

   eval $source
      or die "$path: $@";

   push @exts, $pkg;
   $ext_pkg{$base} = $pkg;

#   no strict 'refs';
#   @{"$pkg\::ISA"} = ext::;

   register $base, $pkg;
}

sub unload_extension {
   my ($pkg) = @_;

   warn "removing extension $pkg\n";

   # remove hooks
   for my $idx (0 .. $#PLUGIN_EVENT) {
      delete $hook[$idx]{$pkg};
   }

   # remove commands
   for my $name (keys %command) {
      my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };

      if (@cb) {
         $command{$name} = \@cb;
         $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
      } else {
         delete $command{$name};
         delete $COMMAND{"$name\000"};
      }
   }

   # remove extcmds
   for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
      delete $extcmd{$name};
   }

   if (my $cb = $pkg->can ("on_unload")) {
      eval {
         $cb->($pkg);
         1
      } or warn "$pkg unloaded, but with errors: $@";
   }

   Symbol::delete_package $pkg;
}

sub load_extensions {
   my $LIBDIR = maps_directory "perl";

   for my $ext (<$LIBDIR/*.ext>) {
      next unless -r $ext;
      eval {
         load_extension $ext;
         1
      } or warn "$ext not loaded: $@";
   }
}

sub _perl_reload(&) {
   my ($msg) = @_;

   $msg->("reloading...");

   eval {
      # 1. cancel all watchers
      $_->cancel for Event::all_watchers;

      # 2. unload all extensions
      for (@exts) {
         $msg->("unloading <$_>");
         unload_extension $_;
      }

      # 3. unload all modules loaded from $LIBDIR
      while (my ($k, $v) = each %INC) {
         next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;

         $msg->("removing <$k>");
         delete $INC{$k};

         $k =~ s/\.pm$//;
         $k =~ s/\//::/g;

         if (my $cb = $k->can ("unload_module")) {
            $cb->();
         }

         Symbol::delete_package $k;
      }

      # 4. get rid of ext::, as good as possible
      Symbol::delete_package "ext::$_"
         for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);

      # 5. remove register_script_function callbacks
      # TODO
      
      # 6. unload cf.pm "a bit"
      delete $INC{"cf.pm"};

      # don't, removes xs symbols, too
      #Symbol::delete_package __PACKAGE__;

      # 7. reload cf.pm
      $msg->("reloading cf.pm");
      require cf;
   };
   $msg->($@) if $@;

   $msg->("reloaded");
};

sub perl_reload() {
   _perl_reload {
      warn $_[0];
      print "$_[0]\n";
   };
}

register_command "perl-reload", 0, sub {
   my ($who, $arg) = @_;

   if ($who->flag (FLAG_WIZ)) {
      _perl_reload {
         warn $_[0];
         $who->message ($_[0]);
      };
   }
};

#############################################################################
# utility functions

use JSON::Syck (); # TODO# replace by JSON::PC once working

sub from_json($) {
   $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
   JSON::Syck::Load $_[0]
}

sub to_json($) {
   $JSON::Syck::ImplicitUnicode = 0;  # work around JSON::Syck bugs
   JSON::Syck::Dump $_[0]
}

#############################################################################
# extcmd framework, basically convert ext <msg>
# into pkg::->on_extcmd_arg1 (...) while shortcutting a few

sub on_extcmd {
   my ($pl, $buf) = @_;

   my $msg = eval { from_json $buf };

   if (ref $msg) {
      if (my $cb = $extcmd{$msg->{msgtype}}) {
         if (my %reply = $cb->[0]->($pl, $msg)) {
            $pl->ext_reply ($msg->{msgid}, %reply);
         }
      }
   } else {
      warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
   }

   1
}

#############################################################################
# load/save/clean perl data associated with a map

*on_mapclean = sub {
   my ($map) = @_;

   my $path = $map->tmpname;
   defined $path or return;

   unlink "$path.cfperl";
};

*on_mapin =
*on_mapload = sub {
   my ($map) = @_;

   my $path = $map->tmpname;
   $path = $map->path unless defined $path;

   open my $fh, "<:raw", "$path.cfperl"
      or return; # no perl data

   my $data = Storable::thaw do { local $/; <$fh> };

   $data->{version} <= 1
      or return; # too new

   $map->_set_obs ($data->{obs});
};

*on_mapout = sub {
   my ($map) = @_;

   my $path = $map->tmpname;
   $path = $map->path unless defined $path;

   my $obs = $map->_get_obs;

   if (defined $obs) {
      open my $fh, ">:raw", "$path.cfperl"
         or die "$path.cfperl: $!";

      stat $path;

      print $fh Storable::nfreeze {
         size    => (stat _)[7],
         time    => (stat _)[9],
         version => 1,
         obs     => $obs,
      };

      chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
   } else {
      unlink "$path.cfperl";
   }
};

#############################################################################
# load/save perl data associated with player->ob objects

sub all_objects(@) {
   @_, map all_objects ($_->inv), @_
}

*on_player_load = sub {
   my ($ob, $path) = @_;

   for my $o (all_objects $ob) {
      if (my $value = $o->get_ob_key_value ("_perl_data")) {
         $o->set_ob_key_value ("_perl_data");

         %$o = %{ Storable::thaw pack "H*", $value };
      }
   }
};

*on_player_save = sub {
   my ($ob, $path) = @_;

   $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
      for grep %$_, all_objects $ob;
};

#############################################################################
# core extensions - in perl

=item cf::player::exists $login

Returns true when the given account exists.

=cut

sub cf::player::exists($) {
   cf::player::find $_[0]
      or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
}

=item $player->reply ($npc, $msg[, $flags])

Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
can be C<undef>. Does the right thing when the player is currently in a
dialogue with the given NPC character.

=cut

# rough implementation of a future "reply" method that works
# with dialog boxes.
sub cf::object::player::reply($$$;$) {
   my ($self, $npc, $msg, $flags) = @_;

   $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;

   if ($self->{record_replies}) {
      push @{ $self->{record_replies} }, [$npc, $msg, $flags];
   } else {
      $msg = $npc->name . " says: $msg" if $npc;
      $self->message ($msg, $flags);
   }
}

=item $player->ext_reply ($msgid, $msgtype, %msg)

Sends an ext reply to the player.

=cut

sub cf::player::ext_reply($$$%) {
   my ($self, $id, %msg) = @_;

   $msg{msgid} = $id;

   $self->send ("ext " . to_json \%msg);
}

#############################################################################
# map scripting support

our $safe = new Safe "ext";
our $safe_hole = new Safe::Hole;

$SIG{FPE} = 'IGNORE';

$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));

# here we export the classes and methods available to script code

for (
   ["cf::object"         => qw(contr pay_amount pay_player)],
   ["cf::object::player" => qw(player)],
   ["cf::player"         => qw(peaceful)],
) {
   no strict 'refs';
   my ($pkg, @funs) = @$_;
   *{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
      for @funs;
}

sub safe_eval($;@) {
   my ($code, %vars) = @_;

   my $qcode = $code;
   $qcode =~ s/"/‟/g; # not allowed in #line filenames
   $qcode =~ s/\n/\\n/g;

   local $_;
   local @ext::cf::_safe_eval_args = values %vars;

   $code =
      "do {\n"
      . "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
      . "#line 0 \"{$qcode}\"\n"
      . $code
      . "\n}"
   ;

   sub_generation_inc;
   my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);
   sub_generation_inc;

   wantarray ? @res : $res[0]
}

sub register_script_function {
   my ($fun, $cb) = @_;

   no strict 'refs';
   *{"ext::$fun"} = $safe_hole->wrap ($cb);
}

#############################################################################
# the server's main()

sub run {
   Event::loop;
}

#############################################################################
# initialisation

register "<global>", __PACKAGE__;

unshift @INC, $LIBDIR;

load_extensions;

$TICK_WATCHER = Event->timer (
   prio => 1,
   at   => $NEXT_TICK || 1,
   cb   => sub {
      cf::server_tick; # one server iteration

      my $NOW = Event::time;
      $NEXT_TICK += $TICK;

      # if we are delayed by four ticks, skip them all
      $NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;

      $TICK_WATCHER->at ($NEXT_TICK);
      $TICK_WATCHER->start;
   },
);

1

Revision:	1.38
Committed:	Thu Aug 24 17:29:30 2006 UTC (17 years, 10 months ago) by root
Branch:	MAIN
Changes since 1.37:	+6 -5 lines
Log Message:	- fix extmap protocol - lay foundation for new event interface (not used, not tested) - "slow down" in-game time specials
#	Content
1	package cf;
2
3	use Symbol;
4	use List::Util;
5	use Storable;
6	use Opcode;
7	use Safe;
8	use Safe::Hole;
9
10	use Time::HiRes;
11	use Event;
12	$Event::Eval = 1; # no idea why this is required, but it is
13
14	use strict;
15
16	our %COMMAND;
17	our @EVENT;
18	our @PLUGIN_EVENT;
19	our %PROP_TYPE;
20	our %PROP_IDX;
21	our $LIBDIR = maps_directory "perl";
22
23	our $TICK = MAX_TIME * 1e-6;
24	our $TICK_WATCHER;
25	our $NEXT_TICK;
26
27	BEGIN {
28	@PLUGIN_EVENT = map lc, @PLUGIN_EVENT;
29
30	*CORE::GLOBAL::warn = sub {
31	my $msg = join "", @_;
32	$msg .= "\n"
33	unless $msg =~ /\n$/;
34
35	print STDERR "cfperl: $msg";
36	LOG llevError, "cfperl: $msg";
37	};
38	}
39
40	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!
41
42	# generate property mutators
43	sub prop_gen {
44	my ($prefix, $class) = @_;
45
46	no strict 'refs';
47
48	for my $prop (keys %PROP_TYPE) {
49	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
50	my $sub = lc $1;
51
52	my $type = $PROP_TYPE{$prop};
53	my $idx = $PROP_IDX {$prop};
54
55	{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
56	$_[0]->get_property ($type, $idx)
57	};
58
59	*{"$class\::set_$sub"} = sub {
60	$_[0]->set_property ($type, $idx, $_[1]);
61	} unless $ignore_set{$prop};
62	}
63	}
64
65	# auto-generate most of the API
66
67	prop_gen OBJECT_PROP => "cf::object";
68	# CFAPI_OBJECT_ANIMATION?
69	prop_gen PLAYER_PROP => "cf::object::player";
70
71	prop_gen MAP_PROP => "cf::map";
72	prop_gen ARCH_PROP => "cf::arch";
73
74	# guessed hierarchies
75
76	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
77	@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
78
79	# we bless all objects into derived classes to force a method lookup
80	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
82	no strict 'refs';
83	@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}
85
86	$Event::DIED = sub {
87	warn "error in event callback: @_";
88	};
89
90	my %ext_pkg;
91	my @exts;
92	my @hook;
93	my %command;
94	my %extcmd;
95
96	sub inject_event {
97	my $extension = shift;
98	my $event_code = shift;
99
100	my $cb = $hook[$event_code]{$extension}
101	or return;
102
103	&$cb
104	}
105
106	sub inject_global_event {
107	my $event = shift;
108
109	my $cb = $hook[$event]
110	or return;
111
112	List::Util::max map &$_, values %$cb
113	}
114
115	sub inject_command {
116	my ($name, $obj, $params) = @_;
117
118	for my $cmd (@{ $command{$name} }) {
119	$cmd->[1]->($obj, $params);
120	}
121
122	-1
123	}
124
125	sub register_command {
126	my ($name, $time, $cb) = @_;
127
128	my $caller = caller;
129	#warn "registering command '$name/$time' to '$caller'";
130
131	push @{ $command{$name} }, [$time, $cb, $caller];
132	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
133	}
134
135	sub register_extcmd {
136	my ($name, $cb) = @_;
137
138	my $caller = caller;
139	#warn "registering extcmd '$name' to '$caller'";
140
141	$extcmd{$name} = [$cb, $caller];
142	}
143
144	sub register {
145	my ($base, $pkg) = @_;
146
147	for my $idx (0 .. $#PLUGIN_EVENT) {
148	if (my $ref = $pkg->can ("on_$PLUGIN_EVENT[$idx]")) {
149	#warn "registering $PLUGIN_EVENT[$idx] hook to '$pkg'\n";
150	$hook[$idx]{$base} = $ref;
151	}
152	}
153	}
154
155	sub load_extension {
156	my ($path) = @_;
157
158	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
159	my $base = $1;
160	my $pkg = $1;
161	$pkg =~ s/[^[:word:]]/_/g;
162	$pkg = "cf::ext::$pkg";
163
164	warn "loading '$path' into '$pkg'\n";
165
166	open my $fh, "<:utf8", $path
167	or die "$path: $!";
168
169	my $source =
170	"package $pkg; use strict; use utf8;\n"
171	. "#line 1 \"$path\"\n{\n"
172	. (do { local $/; <$fh> })
173	. "\n};\n1";
174
175	eval $source
176	or die "$path: $@";
177
178	push @exts, $pkg;
179	$ext_pkg{$base} = $pkg;
180
181	# no strict 'refs';
182	# @{"$pkg\::ISA"} = ext::;
183
184	register $base, $pkg;
185	}
186
187	sub unload_extension {
188	my ($pkg) = @_;
189
190	warn "removing extension $pkg\n";
191
192	# remove hooks
193	for my $idx (0 .. $#PLUGIN_EVENT) {
194	delete $hook[$idx]{$pkg};
195	}
196
197	# remove commands
198	for my $name (keys %command) {
199	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
200
201	if (@cb) {
202	$command{$name} = \@cb;
203	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
204	} else {
205	delete $command{$name};
206	delete $COMMAND{"$name\000"};
207	}
208	}
209
210	# remove extcmds
211	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
212	delete $extcmd{$name};
213	}
214
215	if (my $cb = $pkg->can ("on_unload")) {
216	eval {
217	$cb->($pkg);
218	1
219	} or warn "$pkg unloaded, but with errors: $@";
220	}
221
222	Symbol::delete_package $pkg;
223	}
224
225	sub load_extensions {
226	my $LIBDIR = maps_directory "perl";
227
228	for my $ext (<$LIBDIR/*.ext>) {
229	next unless -r $ext;
230	eval {
231	load_extension $ext;
232	1
233	} or warn "$ext not loaded: $@";
234	}
235	}
236
237	sub _perl_reload(&) {
238	my ($msg) = @_;
239
240	$msg->("reloading...");
241
242	eval {
243	# 1. cancel all watchers
244	$_->cancel for Event::all_watchers;
245
246	# 2. unload all extensions
247	for (@exts) {
248	$msg->("unloading <$_>");
249	unload_extension $_;
250	}
251
252	# 3. unload all modules loaded from $LIBDIR
253	while (my ($k, $v) = each %INC) {
254	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
255
256	$msg->("removing <$k>");
257	delete $INC{$k};
258
259	$k =~ s/\.pm$//;
260	$k =~ s/\//::/g;
261
262	if (my $cb = $k->can ("unload_module")) {
263	$cb->();
264	}
265
266	Symbol::delete_package $k;
267	}
268
269	# 4. get rid of ext::, as good as possible
270	Symbol::delete_package "ext::$_"
271	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
272
273	# 5. remove register_script_function callbacks
274	# TODO
275
276	# 6. unload cf.pm "a bit"
277	delete $INC{"cf.pm"};
278
279	# don't, removes xs symbols, too
280	#Symbol::delete_package __PACKAGE__;
281
282	# 7. reload cf.pm
283	$msg->("reloading cf.pm");
284	require cf;
285	};
286	$msg->($@) if $@;
287
288	$msg->("reloaded");
289	};
290
291	sub perl_reload() {
292	_perl_reload {
293	warn $_[0];
294	print "$_[0]\n";
295	};
296	}
297
298	register_command "perl-reload", 0, sub {
299	my ($who, $arg) = @_;
300
301	if ($who->flag (FLAG_WIZ)) {
302	_perl_reload {
303	warn $_[0];
304	$who->message ($_[0]);
305	};
306	}
307	};
308
309	#############################################################################
310	# utility functions
311
312	use JSON::Syck (); # TODO# replace by JSON::PC once working
313
314	sub from_json($) {
315	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
316	JSON::Syck::Load $_[0]
317	}
318
319	sub to_json($) {
320	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
321	JSON::Syck::Dump $_[0]
322	}
323
324	#############################################################################
325	# extcmd framework, basically convert ext <msg>
326	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
327
328	sub on_extcmd {
329	my ($pl, $buf) = @_;
330
331	my $msg = eval { from_json $buf };
332
333	if (ref $msg) {
334	if (my $cb = $extcmd{$msg->{msgtype}}) {
335	if (my %reply = $cb->[0]->($pl, $msg)) {
336	$pl->ext_reply ($msg->{msgid}, %reply);
337	}
338	}
339	} else {
340	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
341	}
342
343	1
344	}
345
346	#############################################################################
347	# load/save/clean perl data associated with a map
348
349	*on_mapclean = sub {
350	my ($map) = @_;
351
352	my $path = $map->tmpname;
353	defined $path or return;
354
355	unlink "$path.cfperl";
356	};
357
358	*on_mapin =
359	*on_mapload = sub {
360	my ($map) = @_;
361
362	my $path = $map->tmpname;
363	$path = $map->path unless defined $path;
364
365	open my $fh, "<:raw", "$path.cfperl"
366	or return; # no perl data
367
368	my $data = Storable::thaw do { local $/; <$fh> };
369
370	$data->{version} <= 1
371	or return; # too new
372
373	$map->_set_obs ($data->{obs});
374	};
375
376	*on_mapout = sub {
377	my ($map) = @_;
378
379	my $path = $map->tmpname;
380	$path = $map->path unless defined $path;
381
382	my $obs = $map->_get_obs;
383
384	if (defined $obs) {
385	open my $fh, ">:raw", "$path.cfperl"
386	or die "$path.cfperl: $!";
387
388	stat $path;
389
390	print $fh Storable::nfreeze {
391	size => (stat _)[7],
392	time => (stat _)[9],
393	version => 1,
394	obs => $obs,
395	};
396
397	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible g
398	} else {
399	unlink "$path.cfperl";
400	}
401	};
402
403	#############################################################################
404	# load/save perl data associated with player->ob objects
405
406	sub all_objects(@) {
407	@_, map all_objects ($_->inv), @_
408	}
409
410	*on_player_load = sub {
411	my ($ob, $path) = @_;
412
413	for my $o (all_objects $ob) {
414	if (my $value = $o->get_ob_key_value ("_perl_data")) {
415	$o->set_ob_key_value ("_perl_data");
416
417	%$o = %{ Storable::thaw pack "H*", $value };
418	}
419	}
420	};
421
422	*on_player_save = sub {
423	my ($ob, $path) = @_;
424
425	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
426	for grep %$_, all_objects $ob;
427	};
428
429	#############################################################################
430	# core extensions - in perl
431
432	=item cf::player::exists $login
433
434	Returns true when the given account exists.
435
436	=cut
437
438	sub cf::player::exists($) {
439	cf::player::find $_[0]
440	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
441	}
442
443	=item $player->reply ($npc, $msg[, $flags])
444
445	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
446	can be C<undef>. Does the right thing when the player is currently in a
447	dialogue with the given NPC character.
448
449	=cut
450
451	# rough implementation of a future "reply" method that works
452	# with dialog boxes.
453	sub cf::object::player::reply($$$;$) {
454	my ($self, $npc, $msg, $flags) = @_;
455
456	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
457
458	if ($self->{record_replies}) {
459	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
460	} else {
461	$msg = $npc->name . " says: $msg" if $npc;
462	$self->message ($msg, $flags);
463	}
464	}
465
466	=item $player->ext_reply ($msgid, $msgtype, %msg)
467
468	Sends an ext reply to the player.
469
470	=cut
471
472	sub cf::player::ext_reply($$$%) {
473	my ($self, $id, %msg) = @_;
474
475	$msg{msgid} = $id;
476
477	$self->send ("ext " . to_json \%msg);
478	}
479
480	#############################################################################
481	# map scripting support
482
483	our $safe = new Safe "ext";
484	our $safe_hole = new Safe::Hole;
485
486	$SIG{FPE} = 'IGNORE';
487
488	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
489
490	# here we export the classes and methods available to script code
491
492	for (
493	["cf::object" => qw(contr pay_amount pay_player)],
494	["cf::object::player" => qw(player)],
495	["cf::player" => qw(peaceful)],
496	) {
497	no strict 'refs';
498	my ($pkg, @funs) = @$_;
499	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
500	for @funs;
501	}
502
503	sub safe_eval($;@) {
504	my ($code, %vars) = @_;
505
506	my $qcode = $code;
507	$qcode =~ s/"/‟/g; # not allowed in #line filenames
508	$qcode =~ s/\n/\\n/g;
509
510	local $_;
511	local @ext::cf::_safe_eval_args = values %vars;
512
513	$code =
514	"do {\n"
515	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
516	. "#line 0 \"{$qcode}\"\n"
517	. $code
518	. "\n}"
519	;
520
521	sub_generation_inc;
522	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);
523	sub_generation_inc;
524
525	wantarray ? @res : $res[0]
526	}
527
528	sub register_script_function {
529	my ($fun, $cb) = @_;
530
531	no strict 'refs';
532	*{"ext::$fun"} = $safe_hole->wrap ($cb);
533	}
534
535	#############################################################################
536	# the server's main()
537
538	sub run {
539	Event::loop;
540	}
541
542	#############################################################################
543	# initialisation
544
545	register "<global>", __PACKAGE__;
546
547	unshift @INC, $LIBDIR;
548
549	load_extensions;
550
551	$TICK_WATCHER = Event->timer (
552	prio => 1,
553	at => $NEXT_TICK \|\| 1,
554	cb => sub {
555	cf::server_tick; # one server iteration
556
557	my $NOW = Event::time;
558	$NEXT_TICK += $TICK;
559
560	# if we are delayed by four ticks, skip them all
561	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
562
563	$TICK_WATCHER->at ($NEXT_TICK);
564	$TICK_WATCHER->start;
565	},
566	);
567
568	1
569