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 %PROP_TYPE;
our %PROP_IDX;
our $LIBDIR = maps_directory "perl";

BEGIN {
   @EVENT = map lc, @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 .. $#EVENT) {
      if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
         #warn "registering $EVENT[$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 .. $#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: $@";
   }
}

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

   if ($who->flag (FLAG_WIZ)) {
      $who->message ("reloading...");

      warn "reloading...\n";
      eval {
         # 1. cancel all watchers
         $_->cancel for Event::all_watchers;

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

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

            $who->message ("removing <$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
         $who->message ("reloading cf.pm");
         require cf;
      };
      warn $@ if $@;
      $who->message ($@) if $@;
      warn "reloaded\n";

      $who->message ("reloaded");
   } else {
      $who->message ("Intruder Alert!");
   }
};

#############################################################################
# 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

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

   for my $o ($ob, $ob->inv) {
      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 $_)
      for grep %$_, $ob, $ob->inv;
};

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

my $delta_timer = Event->timer (
   parked => 1,
   prio   => Event::PRIO_HIGH,
   cb     => sub { Event::unloop (undef) },
);

sub sleep_delta($) {
   $delta_timer->at (Event::time + $_[0]);
   $delta_timer->start;
   Event::loop;
}

=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);
}

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

register "<global>", __PACKAGE__;

unshift @INC, $LIBDIR;

load_extensions;

1

Revision:	1.32
Committed:	Tue Aug 15 18:07:25 2006 UTC (17 years, 9 months ago) by root
Branch:	MAIN
Changes since 1.31:	+13 -0 lines
Log Message:	use perl's event loop as mainloop
#	User	Rev	Content
1	root	1.1	package cf;
2
3			use Symbol;
4			use List::Util;
5	root	1.6	use Storable;
6	root	1.23	use Opcode;
7			use Safe;
8			use Safe::Hole;
9	root	1.19
10	root	1.32	use Time::HiRes;
11	root	1.18	use Event;
12	root	1.19	$Event::Eval = 1; # no idea why this is required, but it is
13	root	1.1
14			use strict;
15
16			our %COMMAND;
17			our @EVENT;
18			our %PROP_TYPE;
19			our %PROP_IDX;
20	root	1.27	our $LIBDIR = maps_directory "perl";
21	root	1.1
22			BEGIN {
23			@EVENT = map lc, @EVENT;
24
25			*CORE::GLOBAL::warn = sub {
26			my $msg = join "", @_;
27			$msg .= "\n"
28			unless $msg =~ /\n$/;
29
30			print STDERR "cfperl: $msg";
31			LOG llevError, "cfperl: $msg";
32			};
33			}
34
35	root	1.9	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!
36
37	root	1.1	# generate property mutators
38			sub prop_gen {
39			my ($prefix, $class) = @_;
40
41			no strict 'refs';
42
43			for my $prop (keys %PROP_TYPE) {
44			$prop =~ /^\Q$prefix\E_(.*$)/ or next;
45			my $sub = lc $1;
46
47			my $type = $PROP_TYPE{$prop};
48			my $idx = $PROP_IDX {$prop};
49
50			{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
51			$_[0]->get_property ($type, $idx)
52			};
53
54			*{"$class\::set_$sub"} = sub {
55			$_[0]->set_property ($type, $idx, $_[1]);
56	root	1.9	} unless $ignore_set{$prop};
57	root	1.1	}
58			}
59
60			# auto-generate most of the API
61
62			prop_gen OBJECT_PROP => "cf::object";
63			# CFAPI_OBJECT_ANIMATION?
64			prop_gen PLAYER_PROP => "cf::object::player";
65
66			prop_gen MAP_PROP => "cf::map";
67			prop_gen ARCH_PROP => "cf::arch";
68
69			# guessed hierarchies
70
71	root	1.25	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72			@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
73
74			# we bless all objects into derived classes to force a method lookup
75			# within the Safe compartment.
76	elmex	1.30	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
77	root	1.25	no strict 'refs';
78			@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
79			}
80	root	1.1
81	root	1.18	$Event::DIED = sub {
82			warn "error in event callback: @_";
83			};
84
85	root	1.5	my %ext_pkg;
86	root	1.1	my @exts;
87			my @hook;
88			my %command;
89	root	1.15	my %extcmd;
90	root	1.1
91			sub inject_event {
92	root	1.14	my $extension = shift;
93			my $event_code = shift;
94	root	1.1
95	root	1.14	my $cb = $hook[$event_code]{$extension}
96	root	1.5	or return;
97
98	root	1.14	&$cb
99	root	1.5	}
100
101			sub inject_global_event {
102	root	1.12	my $event = shift;
103	root	1.5
104	root	1.12	my $cb = $hook[$event]
105	root	1.1	or return;
106
107	root	1.12	List::Util::max map &$_, values %$cb
108	root	1.1	}
109
110			sub inject_command {
111			my ($name, $obj, $params) = @_;
112
113			for my $cmd (@{ $command{$name} }) {
114			$cmd->[1]->($obj, $params);
115			}
116
117			-1
118			}
119
120			sub register_command {
121			my ($name, $time, $cb) = @_;
122
123			my $caller = caller;
124	root	1.16	#warn "registering command '$name/$time' to '$caller'";
125	root	1.4
126	root	1.1	push @{ $command{$name} }, [$time, $cb, $caller];
127			$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
128			}
129
130	root	1.16	sub register_extcmd {
131			my ($name, $cb) = @_;
132
133			my $caller = caller;
134			#warn "registering extcmd '$name' to '$caller'";
135
136			$extcmd{$name} = [$cb, $caller];
137			}
138
139	root	1.6	sub register {
140			my ($base, $pkg) = @_;
141
142			for my $idx (0 .. $#EVENT) {
143			if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
144	root	1.16	#warn "registering $EVENT[$idx] hook to '$pkg'\n";
145	root	1.6	$hook[$idx]{$base} = $ref;
146			}
147			}
148			}
149
150	root	1.1	sub load_extension {
151			my ($path) = @_;
152
153			$path =~ /([^\/\\]+)\.ext$/ or die "$path";
154	root	1.5	my $base = $1;
155	root	1.1	my $pkg = $1;
156			$pkg =~ s/[^[:word:]]/_/g;
157			$pkg = "cf::ext::$pkg";
158
159			warn "loading '$path' into '$pkg'\n";
160
161			open my $fh, "<:utf8", $path
162			or die "$path: $!";
163
164			my $source =
165			"package $pkg; use strict; use utf8;\n"
166			. "#line 1 \"$path\"\n{\n"
167			. (do { local $/; <$fh> })
168			. "\n};\n1";
169
170			eval $source
171			or die "$path: $@";
172
173			push @exts, $pkg;
174	root	1.5	$ext_pkg{$base} = $pkg;
175	root	1.1
176	root	1.6	# no strict 'refs';
177	root	1.23	# @{"$pkg\::ISA"} = ext::;
178	root	1.1
179	root	1.6	register $base, $pkg;
180	root	1.1	}
181
182			sub unload_extension {
183			my ($pkg) = @_;
184
185			warn "removing extension $pkg\n";
186
187			# remove hooks
188			for my $idx (0 .. $#EVENT) {
189			delete $hook[$idx]{$pkg};
190			}
191
192			# remove commands
193			for my $name (keys %command) {
194			my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
195
196			if (@cb) {
197			$command{$name} = \@cb;
198			$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
199			} else {
200			delete $command{$name};
201			delete $COMMAND{"$name\000"};
202			}
203			}
204
205	root	1.15	# remove extcmds
206	root	1.16	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
207			delete $extcmd{$name};
208	root	1.15	}
209
210	elmex	1.31	if (my $cb = $pkg->can ("on_unload")) {
211			eval {
212			$cb->($pkg);
213			1
214			} or warn "$pkg unloaded, but with errors: $@";
215			}
216
217	root	1.1	Symbol::delete_package $pkg;
218			}
219
220			sub load_extensions {
221			my $LIBDIR = maps_directory "perl";
222
223			for my $ext (<$LIBDIR/*.ext>) {
224	root	1.3	next unless -r $ext;
225	root	1.2	eval {
226			load_extension $ext;
227			1
228			} or warn "$ext not loaded: $@";
229	root	1.1	}
230			}
231
232			register_command "perl-reload", 0, sub {
233			my ($who, $arg) = @_;
234
235			if ($who->flag (FLAG_WIZ)) {
236	root	1.3	$who->message ("reloading...");
237
238	root	1.1	warn "reloading...\n";
239	root	1.4	eval {
240	root	1.27	# 1. cancel all watchers
241	root	1.20	$_->cancel for Event::all_watchers;
242
243	root	1.27	# 2. unload all extensions
244			for (@exts) {
245			$who->message ("unloading <$_>");
246			unload_extension $_;
247			}
248
249			# 3. unload all modules loaded from $LIBDIR
250			while (my ($k, $v) = each %INC) {
251			next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
252
253			$who->message ("removing <$k>");
254			delete $INC{$k};
255
256			$k =~ s/\.pm$//;
257			$k =~ s/\//::/g;
258
259			if (my $cb = $k->can ("unload_module")) {
260			$cb->();
261			}
262
263			Symbol::delete_package $k;
264			}
265
266			# 4. get rid of ext::, as good as possible
267			Symbol::delete_package "ext::$_"
268			for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
269
270			# 5. remove register_script_function callbacks
271			# TODO
272
273			# 6. unload cf.pm "a bit"
274	root	1.4	delete $INC{"cf.pm"};
275
276			# don't, removes xs symbols, too
277	root	1.21	#Symbol::delete_package __PACKAGE__;
278	root	1.4
279	root	1.27	# 7. reload cf.pm
280			$who->message ("reloading cf.pm");
281	root	1.4	require cf;
282			};
283			warn $@ if $@;
284			$who->message ($@) if $@;
285	root	1.1	warn "reloaded\n";
286	root	1.3
287			$who->message ("reloaded");
288			} else {
289			$who->message ("Intruder Alert!");
290	root	1.1	}
291			};
292
293	root	1.8	#############################################################################
294	root	1.28	# utility functions
295
296			use JSON::Syck (); # TODO# replace by JSON::PC once working
297
298			sub from_json($) {
299	root	1.29	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
300	root	1.28	JSON::Syck::Load $_[0]
301			}
302
303			sub to_json($) {
304	root	1.29	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
305	root	1.28	JSON::Syck::Dump $_[0]
306			}
307
308			#############################################################################
309			# extcmd framework, basically convert ext <msg>
310	root	1.15	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
311
312			sub on_extcmd {
313			my ($pl, $buf) = @_;
314
315	root	1.28	my $msg = eval { from_json $buf };
316
317			if (ref $msg) {
318			if (my $cb = $extcmd{$msg->{msgtype}}) {
319			if (my %reply = $cb->[0]->($pl, $msg)) {
320			$pl->ext_reply ($msg->{msgid}, %reply);
321			}
322			}
323			} else {
324			warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
325			}
326	root	1.15
327	root	1.28	1
328	root	1.15	}
329
330			#############################################################################
331	root	1.8	# load/save/clean perl data associated with a map
332
333	root	1.7	*on_mapclean = sub {
334	root	1.13	my ($map) = @_;
335	root	1.7
336			my $path = $map->tmpname;
337			defined $path or return;
338
339			unlink "$path.cfperl";
340			};
341
342	root	1.6	*on_mapin =
343			*on_mapload = sub {
344	root	1.13	my ($map) = @_;
345	root	1.6
346			my $path = $map->tmpname;
347			$path = $map->path unless defined $path;
348
349			open my $fh, "<:raw", "$path.cfperl"
350			or return; # no perl data
351
352			my $data = Storable::thaw do { local $/; <$fh> };
353
354			$data->{version} <= 1
355			or return; # too new
356
357			$map->_set_obs ($data->{obs});
358			};
359
360			*on_mapout = sub {
361	root	1.13	my ($map) = @_;
362	root	1.6
363			my $path = $map->tmpname;
364			$path = $map->path unless defined $path;
365
366			my $obs = $map->_get_obs;
367
368			if (defined $obs) {
369			open my $fh, ">:raw", "$path.cfperl"
370			or die "$path.cfperl: $!";
371
372	root	1.8	stat $path;
373
374			print $fh Storable::nfreeze {
375			size => (stat _)[7],
376			time => (stat _)[9],
377			version => 1,
378			obs => $obs,
379			};
380
381			chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible g
382			} else {
383			unlink "$path.cfperl";
384			}
385			};
386
387			#############################################################################
388			# load/save perl data associated with player->ob objects
389
390			*on_player_load = sub {
391	root	1.13	my ($ob, $path) = @_;
392	root	1.8
393	root	1.11	for my $o ($ob, $ob->inv) {
394			if (my $value = $o->get_ob_key_value ("_perl_data")) {
395			$o->set_ob_key_value ("_perl_data");
396
397			%$o = %{ Storable::thaw pack "H*", $value };
398			}
399			}
400	root	1.8	};
401
402			*on_player_save = sub {
403	root	1.13	my ($ob, $path) = @_;
404	root	1.8
405	root	1.11	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
406			for grep %$_, $ob, $ob->inv;
407	root	1.6	};
408
409	root	1.22	#############################################################################
410			# core extensions - in perl
411
412	root	1.32	my $delta_timer = Event->timer (
413			parked => 1,
414			prio => Event::PRIO_HIGH,
415			cb => sub { Event::unloop (undef) },
416			);
417
418			sub sleep_delta($) {
419			$delta_timer->at (Event::time + $_[0]);
420			$delta_timer->start;
421			Event::loop;
422			}
423
424	root	1.23	=item cf::player::exists $login
425
426			Returns true when the given account exists.
427
428			=cut
429
430			sub cf::player::exists($) {
431			cf::player::find $_[0]
432			or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
433			}
434
435	root	1.28	=item $player->reply ($npc, $msg[, $flags])
436
437			Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
438			can be C<undef>. Does the right thing when the player is currently in a
439			dialogue with the given NPC character.
440
441			=cut
442
443	root	1.22	# rough implementation of a future "reply" method that works
444			# with dialog boxes.
445	root	1.23	sub cf::object::player::reply($$$;$) {
446			my ($self, $npc, $msg, $flags) = @_;
447
448			$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
449	root	1.22
450	root	1.24	if ($self->{record_replies}) {
451			push @{ $self->{record_replies} }, [$npc, $msg, $flags];
452			} else {
453			$msg = $npc->name . " says: $msg" if $npc;
454			$self->message ($msg, $flags);
455			}
456	root	1.22	}
457
458	root	1.28	=item $player->ext_reply ($msgid, $msgtype, %msg)
459
460			Sends an ext reply to the player.
461
462			=cut
463
464			sub cf::player::ext_reply($$$%) {
465			my ($self, $id, %msg) = @_;
466
467			$msg{msgid} = $id;
468
469			$self->send ("ext " . to_json \%msg);
470			}
471
472	root	1.22	#############################################################################
473	root	1.23	# map scripting support
474
475			our $safe = new Safe "ext";
476			our $safe_hole = new Safe::Hole;
477
478			$SIG{FPE} = 'IGNORE';
479
480			$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
481
482	root	1.25	# here we export the classes and methods available to script code
483
484			for (
485	root	1.27	["cf::object" => qw(contr pay_amount pay_player)],
486	root	1.25	["cf::object::player" => qw(player)],
487			["cf::player" => qw(peaceful)],
488			) {
489			no strict 'refs';
490			my ($pkg, @funs) = @$_;
491			*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
492			for @funs;
493			}
494	root	1.23
495			sub safe_eval($;@) {
496			my ($code, %vars) = @_;
497
498			my $qcode = $code;
499			$qcode =~ s/"/‟/g; # not allowed in #line filenames
500			$qcode =~ s/\n/\\n/g;
501
502			local $_;
503			local @ext::cf::_safe_eval_args = values %vars;
504
505	root	1.25	$code =
506	root	1.23	"do {\n"
507			. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
508			. "#line 0 \"{$qcode}\"\n"
509			. $code
510			. "\n}"
511	root	1.25	;
512
513			sub_generation_inc;
514			my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);
515			sub_generation_inc;
516
517			wantarray ? @res : $res[0]
518	root	1.23	}
519
520			sub register_script_function {
521			my ($fun, $cb) = @_;
522
523			no strict 'refs';
524			*{"ext::$fun"} = $safe_hole->wrap ($cb);
525			}
526
527			#############################################################################
528	root	1.22	# initialisation
529
530	root	1.6	register "<global>", __PACKAGE__;
531
532	root	1.27	unshift @INC, $LIBDIR;
533	root	1.17
534	root	1.1	load_extensions;
535
536			1
537