server/ext/00_map_handling.ext

#! perl

# why this is an extension is a good question. next question.

use Fcntl;

use Coro;
use Coro::AIO;

our $emergency_position = $cf::CFG{emergency_position} || ["/world/world_105_115", 5, 37];

our $DEACTIVATE_TIMEOUT =  60; # number of seconds after which maps get deactivated to save cpu
our $SWAP_TIMEOUT       = 600; # number of seconds after which maps inactive get swapped out
our $SCHEDULE_INTERVAL  =   8; # time the map scheduler sleeps between runs
our $SAVE_TIMEOUT       =  60; # save maps every n seconds
our $SAVE_INTERVAL      = 0.4; # save at max. one map every $SAVE_HOLD
our $MAX_RESET          = 7200;

$DEACTIVATE_TIMEOUT = 3;#d#
$SWAP_TIMEOUT = 5;#d#
$SCHEDULE_INTERVAL = 1;

$cf::LINK_MAP ||= do {
   my $map = cf::map::new;

   $map->width (1);
   $map->height (1);
   $map->alloc;
   $map->path ("{link}");
   $map->{path} = bless { path => "{link}" }, "cf::path";
   $map->in_memory (cf::MAP_IN_MEMORY);

   $map
};

{
   package cf::path;

   sub new {
      my ($class, $path, $base) = @_;

      my %res;

      if ($path =~ s{^~([^/]+)?}{}) {
         $res{user_rel} = 1;

         if (defined $1) {
            $res{user} = $1;
         } elsif ($base =~ m{^~([^/]+)/}) {
            $res{user} = $1;
         } else {
            warn "cannot resolve user-relative path without user <$path,$base>\n";
         }
      } elsif ($path =~ /^\//) {
         # already absolute
      } else {
         $base =~ s{[^/]+/?$}{};
         return $class->new ("$base/$path");
      }

      for ($path) {
         redo if s{/\.?/}{/};
         redo if s{/[^/]+/\.\./}{/};
      }

      $res{path} = $path;

      bless \%res, $class
   }

   # the name / primary key / in-game path
   sub as_string {
      my ($self) = @_;

      $self->{user_rel}
         ? "~$self->{user}$self->{path}"
         : $self->{path}
   }

   # escape the /'s in the path
   sub escaped_path  {
      # ∕ is U+2215
      (my $path = $_[0]{path}) =~ s/\//∕/g;
      $path
   }

   # the original (read-only) location
   sub load_path {
      my ($self) = @_;

      sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
   }

   # the temporary/swap location
   sub save_path {
      my ($self) = @_;

      $self->{user_rel}
         ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->escaped_path
         : sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->escaped_path
   }

   # the unique path, might be eq to save_path
   sub uniq_path {
      my ($self) = @_;

      $self->{user_rel}
         ? undef
         : sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->escaped_path
   }
}

sub write_runtime {
   my $runtime = cf::localdir . "/runtime";

   my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
      or return;

   my $value = $cf::RUNTIME;
   (aio_write $fh, 0, (length $value), $value, 0) <= 0
      and return;

   aio_fsync $fh
      and return;

   close $fh
      or return;

   aio_rename "$runtime~", $runtime
      and return;

   1
}

(Coro::async {
   unless (write_runtime) {
      warn "unable to write runtime file: $!";
      exit 1;
   }
})->prio (Coro::PRIO_MAX);

our $SCHEDULER = cf::coro {
   while () {
      Coro::Timer::sleep $SCHEDULE_INTERVAL;

      write_runtime
         or warn "unable to write runtime file: $!";

      for my $map (values %cf::MAP) {
         eval {
            next if $map->in_memory != cf::MAP_IN_MEMORY;
            next if $map->players;
            my $last_access = $map->last_access;
            # not yet, because maps might become visible to players nearby
            # we need a tiled meta map for this to work
#         if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) {
#            $map->deactivate;
#            delete $map->{active};
#         }
            if ($map->should_reset) {
               $map->reset;
            } elsif ($last_access + $SWAP_TIMEOUT <= $cf::RUNTIME) {
               $map->swap_out;
               Coro::Timer::sleep $SAVE_INTERVAL;
            } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) {
               $map->save;
               Coro::Timer::sleep $SAVE_INTERVAL;
            }
         };
         warn $@ if $@;
         cede;
      }
   }
};
$SCHEDULER->prio (-2);

sub sync_job(&) {
   my ($job) = @_;

   my $done;
   my @res;

   Carp::confess "nested sync_job" if $cf::FREEZE;

   local $cf::FREEZE = 1;

   (Coro::async {
      @res = eval { $job->() };
      warn $@ if $@;
      $done = 1;
   })->prio (Coro::PRIO_MAX);

   while (!$done) {
      Coro::cede_notself;
      Event::one_event unless Coro::nready;
   }

   wantarray ? @res : $res[0]
}

# and all this just because we cannot iterate over
# all maps in C++...
sub cf::map::change_all_map_light {
   my ($change) = @_;

   $_->change_map_light ($change) for values %cf::MAP;
}

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

   utf8::encode $path;
   aio_open $path, O_RDONLY, 0
      or return;

   my $map = cf::map::new
      or return;

   $map->load_header ($path)
     or return;

   $map->reset_time (0) if $map->reset_time > $cf::RUNTIME;
   $map->reset_timeout (10);#d#

   $map->{load_path} = $path;

   $map
}

sub cf::map::find_map_nb {
   my ($path, $origin) = @_;

   warn "find_map_nb<$path,$origin>\n";#d#

   $path = ref $path ? $path : new cf::path $path, $origin && $origin->path;
   my $key = $path->as_string;

   $cf::MAP{$key} || do {
      # do it the slow way
      my $map = try_load_header $path->save_path;

      if (!$map) {
         $map = try_load_header $path->load_path
            or return;
      }

      $map or return;

      $map->instantiate;
      $map->path ($key);
      $map->{path} = $path;

      $map->per_player (0) if $path->{user_rel};

      $map->reset if $map->should_reset;

      $cf::MAP{$key} = $map
   }
}

sub cf::map::find_map {
   my ($path, $origin) = @_;

   $path = new cf::path $path, $origin && $origin->path;
   my $key = $path->as_string;

   warn "find_map<$path,$origin>\n";#d#

   $cf::MAP{$key} || sync_job {
      cf::map::find_map_nb $path;
   }
}

sub cf::map::do_load_nb {
   my ($self) = @_;

   return 0 unless $self->in_memory == cf::MAP_SWAPPED;

   $self->in_memory (cf::MAP_LOADING);

   my $path = $self->{path};

   $self->alloc;
   $self->load_objects ($self->{load_path}, 1)
      or return;

   if (my $uniq = $path->uniq_path) {
      utf8::encode $uniq;
      if (aio_open $uniq, O_RDONLY, 0) {
         $self->clear_unique_items;
         $self->load_objects ($uniq, 0);
      }
   }

   # now do the right thing for maps
   $self->link_multipart_objects;
   $self->fix_auto_apply;
   $self->decay_objects;
   $self->update_buttons;
   $self->set_darkness_map;
   $self->difficulty ($self->estimate_difficulty)
      unless $self->difficulty;
   $self->activate;

   $self->in_memory (cf::MAP_IN_MEMORY);
}

sub cf::map::do_load {
   my ($self) = @_;

   warn "do_load<$self>\n";#d#

   sync_job {
      cf::map::do_load_nb $self;
   };
}

sub cf::map::save {
   my ($self) = @_;

   warn "saving map ", $self->path;

   my $save = $self->{path}->save_path; utf8::encode $save;
   my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;

   if ($uniq) {
      $self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
      $self->save_objects ($uniq, cf::IO_UNIQUES);
   } else {
      $self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
   }

   $self->{load_path} = $save;
   $self->{last_save} = $cf::RUNTIME;
}

sub cf::map::swap_out {
   my ($self) = @_;

   return if $self->players;

   $self->save if $self->in_memory == cf::MAP_IN_MEMORY;
   $self->clear;
   $self->in_memory (cf::MAP_SWAPPED);
}

sub cf::map::should_reset {
   my ($map) = @_;

   # TODO: safety, remove and allow resettable per-player maps
   return if $map->{path}{user_rel};#d#
   return if $map->per_player;
   return unless $map->reset_timeout;

   my $time = $map->fixed_resettime ? $map->reset_time : $map->last_access;

   $time + $map->reset_timeout < $cf::RUNTIME
}

sub cf::map::reset {
   my ($self) = @_;

   return if $self->players;
   return if $self->{path}{user_rel};#d#

   warn "resetting map ", $self->path;#d#

   utf8::encode (my $save = $self->{path}->save_path);
   aioreq_pri 3; IO::AIO::aio_unlink $save;
   aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";

   $self->clear;
   $self->in_memory (cf::MAP_SWAPPED);
   utf8::encode ($self->{load_path} = $self->{path}->load_path);
}

sub cf::object::player::enter_exit {
   my ($ob, $exit) = @_;

   return unless $ob->type == cf::PLAYER;

   # if at login, move to interim map immediately
   unless ($exit) {
      # used on login only
      $ob->enter_map ($LINK_MAP, 0, 0);
   }

   my ($oldmap, $oldx, $oldy) = ($ob->map, $ob->x, $ob->y);

   #TODO: do this in the background, freeze the player if required
   sync_job {
      my ($map, $x, $y);

      unless ($exit) {
         # used on login only(?)
         $map = cf::map::find_map_nb $ob->contr->maplevel;
         ($x, $y) = ($ob->x, $ob->y);

         unless ($map) {
            $map = cf::map::find_map_nb $emergency_position->[0]
               or die "FATAL: cannot load emergency map\n";
            $x = $emergency_position->[1];
            $y = $emergency_position->[2];
         }

      } elsif ($exit->slaying eq "!") {
      } else {
         my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;

         $map = cf::map::find_map_nb $path->as_string;
         $map = $map->customise_for ($ob) if $map;
         ($x, $y) = ($exit->stats->hp, $exit->stats->sp);
      }

      unless ($map) {
         $ob->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
         # restore original map position
         ($map, $x, $y) = ($oldmap, $oldx, $oldy);
      }

      warn "entering ", $map->path, " at ($x, $y)\n";#d#
      $map->do_load_nb;
      $ob->enter_map ($map, $x, $y);
   }
}

sub cf::map::customise_for {
   my ($map, $ob) = @_;

   if ($map->per_player) {
      return cf::map::find_map_nb "~" . $ob->name . "/" . $map->{path}{path};
   }

   $map
}

sub cf::map::emergency_save {
   local $cf::FREEZE = 1;

   warn "enter emergency map save\n";

   my $saver = async {
      warn "begin emergency map save\n";
      $_->save for values %cf::MAP;
   };
   $saver->prio (Coro::PRIO_MAX);
   $saver->join;

   warn "emergency map save drain\n";
   Event::one_event while IO::AIO::nreqs;
   warn "end emergency map save\n";
}

Revision:	1.6
Committed:	Sat Dec 30 20:32:30 2006 UTC (17 years, 4 months ago) by root
Branch:	MAIN
Changes since 1.5:	+22 -11 lines
Log Message:	fix some bugs
#	User	Rev	Content
1	root	1.1	#! perl
2
3			# why this is an extension is a good question. next question.
4
5			use Fcntl;
6
7			use Coro;
8			use Coro::AIO;
9
10			our $emergency_position = $cf::CFG{emergency_position} \|\| ["/world/world_105_115", 5, 37];
11
12			our $DEACTIVATE_TIMEOUT = 60; # number of seconds after which maps get deactivated to save cpu
13			our $SWAP_TIMEOUT = 600; # number of seconds after which maps inactive get swapped out
14			our $SCHEDULE_INTERVAL = 8; # time the map scheduler sleeps between runs
15			our $SAVE_TIMEOUT = 60; # save maps every n seconds
16			our $SAVE_INTERVAL = 0.4; # save at max. one map every $SAVE_HOLD
17			our $MAX_RESET = 7200;
18
19			$DEACTIVATE_TIMEOUT = 3;#d#
20			$SWAP_TIMEOUT = 5;#d#
21			$SCHEDULE_INTERVAL = 1;
22
23			$cf::LINK_MAP \|\|= do {
24			my $map = cf::map::new;
25
26			$map->width (1);
27			$map->height (1);
28			$map->alloc;
29			$map->path ("{link}");
30			$map->{path} = bless { path => "{link}" }, "cf::path";
31			$map->in_memory (cf::MAP_IN_MEMORY);
32
33			$map
34			};
35
36			{
37			package cf::path;
38
39			sub new {
40			my ($class, $path, $base) = @_;
41
42			my %res;
43
44			if ($path =~ s{^~([^/]+)?}{}) {
45			$res{user_rel} = 1;
46
47			if (defined $1) {
48			$res{user} = $1;
49			} elsif ($base =~ m{^~([^/]+)/}) {
50			$res{user} = $1;
51			} else {
52			warn "cannot resolve user-relative path without user <$path,$base>\n";
53			}
54			} elsif ($path =~ /^\//) {
55			# already absolute
56			} else {
57			$base =~ s{[^/]+/?$}{};
58			return $class->new ("$base/$path");
59			}
60
61			for ($path) {
62			redo if s{/\.?/}{/};
63			redo if s{/[^/]+/\.\./}{/};
64			}
65
66			$res{path} = $path;
67
68			bless \%res, $class
69			}
70
71			# the name / primary key / in-game path
72			sub as_string {
73			my ($self) = @_;
74
75			$self->{user_rel}
76			? "~$self->{user}$self->{path}"
77			: $self->{path}
78			}
79
80			# escape the /'s in the path
81			sub escaped_path {
82			# ∕ is U+2215
83			(my $path = $_[0]{path}) =~ s/\//∕/g;
84			$path
85			}
86
87			# the original (read-only) location
88			sub load_path {
89			my ($self) = @_;
90
91			sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
92			}
93
94			# the temporary/swap location
95			sub save_path {
96			my ($self) = @_;
97
98			$self->{user_rel}
99			? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->escaped_path
100			: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->escaped_path
101			}
102
103			# the unique path, might be eq to save_path
104			sub uniq_path {
105			my ($self) = @_;
106
107			$self->{user_rel}
108			? undef
109			: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->escaped_path
110			}
111			}
112
113			sub write_runtime {
114			my $runtime = cf::localdir . "/runtime";
115
116			my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
117			or return;
118
119			my $value = $cf::RUNTIME;
120			(aio_write $fh, 0, (length $value), $value, 0) <= 0
121			and return;
122
123			aio_fsync $fh
124			and return;
125
126			close $fh
127			or return;
128
129			aio_rename "$runtime~", $runtime
130			and return;
131
132			1
133			}
134
135	root	1.4	(Coro::async {
136	root	1.1	unless (write_runtime) {
137			warn "unable to write runtime file: $!";
138			exit 1;
139			}
140	root	1.4	})->prio (Coro::PRIO_MAX);
141	root	1.1
142			our $SCHEDULER = cf::coro {
143			while () {
144			Coro::Timer::sleep $SCHEDULE_INTERVAL;
145
146			write_runtime
147			or warn "unable to write runtime file: $!";
148
149			for my $map (values %cf::MAP) {
150			eval {
151			next if $map->in_memory != cf::MAP_IN_MEMORY;
152	root	1.6	next if $map->players;
153	root	1.1	my $last_access = $map->last_access;
154			# not yet, because maps might become visible to players nearby
155			# we need a tiled meta map for this to work
156			# if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) {
157			# $map->deactivate;
158			# delete $map->{active};
159			# }
160			if ($map->should_reset) {
161			$map->reset;
162			} elsif ($last_access + $SWAP_TIMEOUT <= $cf::RUNTIME) {
163			$map->swap_out;
164			Coro::Timer::sleep $SAVE_INTERVAL;
165			} elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) {
166			$map->save;
167			Coro::Timer::sleep $SAVE_INTERVAL;
168			}
169			};
170			warn $@ if $@;
171			cede;
172			}
173			}
174			};
175			$SCHEDULER->prio (-2);
176
177			sub sync_job(&) {
178			my ($job) = @_;
179
180			my $done;
181			my @res;
182
183			Carp::confess "nested sync_job" if $cf::FREEZE;
184
185			local $cf::FREEZE = 1;
186
187	root	1.4	(Coro::async {
188	root	1.1	@res = eval { $job->() };
189			warn $@ if $@;
190			$done = 1;
191			})->prio (Coro::PRIO_MAX);
192
193			while (!$done) {
194			Coro::cede_notself;
195			Event::one_event unless Coro::nready;
196			}
197
198			wantarray ? @res : $res[0]
199			}
200
201			# and all this just because we cannot iterate over
202			# all maps in C++...
203			sub cf::map::change_all_map_light {
204			my ($change) = @_;
205
206			$_->change_map_light ($change) for values %cf::MAP;
207			}
208
209			sub try_load_header($) {
210			my ($path) = @_;
211
212			utf8::encode $path;
213			aio_open $path, O_RDONLY, 0
214			or return;
215
216			my $map = cf::map::new
217			or return;
218
219			$map->load_header ($path)
220			or return;
221
222			$map->reset_time (0) if $map->reset_time > $cf::RUNTIME;
223			$map->reset_timeout (10);#d#
224
225			$map->{load_path} = $path;
226
227			$map
228			}
229
230			sub cf::map::find_map_nb {
231			my ($path, $origin) = @_;
232
233	root	1.3	warn "find_map_nb<$path,$origin>\n";#d#
234
235	root	1.1	$path = ref $path ? $path : new cf::path $path, $origin && $origin->path;
236			my $key = $path->as_string;
237
238			$cf::MAP{$key} \|\| do {
239			# do it the slow way
240			my $map = try_load_header $path->save_path;
241
242			if (!$map) {
243			$map = try_load_header $path->load_path
244			or return;
245			}
246
247			$map or return;
248
249			$map->instantiate;
250			$map->path ($key);
251			$map->{path} = $path;
252
253	root	1.3	$map->per_player (0) if $path->{user_rel};
254
255	root	1.1	$map->reset if $map->should_reset;
256
257			$cf::MAP{$key} = $map
258			}
259			}
260
261			sub cf::map::find_map {
262			my ($path, $origin) = @_;
263
264			$path = new cf::path $path, $origin && $origin->path;
265			my $key = $path->as_string;
266
267			warn "find_map<$path,$origin>\n";#d#
268
269			$cf::MAP{$key} \|\| sync_job {
270			cf::map::find_map_nb $path;
271			}
272			}
273
274			sub cf::map::do_load_nb {
275			my ($self) = @_;
276
277			return 0 unless $self->in_memory == cf::MAP_SWAPPED;
278
279			$self->in_memory (cf::MAP_LOADING);
280
281			my $path = $self->{path};
282
283			$self->alloc;
284			$self->load_objects ($self->{load_path}, 1)
285			or return;
286
287			if (my $uniq = $path->uniq_path) {
288			utf8::encode $uniq;
289			if (aio_open $uniq, O_RDONLY, 0) {
290			$self->clear_unique_items;
291			$self->load_objects ($uniq, 0);
292			}
293			}
294
295			# now do the right thing for maps
296			$self->link_multipart_objects;
297			$self->fix_auto_apply;
298			$self->decay_objects;
299			$self->update_buttons;
300			$self->set_darkness_map;
301			$self->difficulty ($self->estimate_difficulty)
302			unless $self->difficulty;
303	elmex	1.5	$self->activate;
304	root	1.1
305			$self->in_memory (cf::MAP_IN_MEMORY);
306			}
307
308			sub cf::map::do_load {
309			my ($self) = @_;
310
311			warn "do_load<$self>\n";#d#
312
313			sync_job {
314			cf::map::do_load_nb $self;
315			};
316			}
317
318			sub cf::map::save {
319			my ($self) = @_;
320
321			warn "saving map ", $self->path;
322
323			my $save = $self->{path}->save_path; utf8::encode $save;
324			my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
325
326			if ($uniq) {
327			$self->save_objects ($save, cf::IO_HEADER \| cf::IO_OBJECTS);
328			$self->save_objects ($uniq, cf::IO_UNIQUES);
329			} else {
330			$self->save_objects ($save, cf::IO_HEADER \| cf::IO_OBJECTS \| cf::IO_UNIQUES);
331			}
332
333			$self->{load_path} = $save;
334			$self->{last_save} = $cf::RUNTIME;
335			}
336
337	root	1.2	sub cf::map::swap_out {
338			my ($self) = @_;
339
340	root	1.6	return if $self->players;
341
342	root	1.3	$self->save if $self->in_memory == cf::MAP_IN_MEMORY;
343	root	1.2	$self->clear;
344			$self->in_memory (cf::MAP_SWAPPED);
345			}
346
347	root	1.1	sub cf::map::should_reset {
348			my ($map) = @_;
349
350			# TODO: safety, remove and allow resettable per-player maps
351			return if $map->{path}{user_rel};#d#
352			return if $map->per_player;
353			return unless $map->reset_timeout;
354
355			my $time = $map->fixed_resettime ? $map->reset_time : $map->last_access;
356
357			$time + $map->reset_timeout < $cf::RUNTIME
358			}
359
360			sub cf::map::reset {
361			my ($self) = @_;
362
363			return if $self->players;
364	root	1.3	return if $self->{path}{user_rel};#d#
365	root	1.1
366			warn "resetting map ", $self->path;#d#
367	root	1.3
368			utf8::encode (my $save = $self->{path}->save_path);
369			aioreq_pri 3; IO::AIO::aio_unlink $save;
370			aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
371	root	1.1
372			$self->clear;
373			$self->in_memory (cf::MAP_SWAPPED);
374	root	1.3	utf8::encode ($self->{load_path} = $self->{path}->load_path);
375	root	1.1	}
376
377			sub cf::object::player::enter_exit {
378			my ($ob, $exit) = @_;
379
380	root	1.6	return unless $ob->type == cf::PLAYER;
381
382	root	1.4	# if at login, move to interim map immediately
383			unless ($exit) {
384			# used on login only
385			$ob->enter_map ($LINK_MAP, 0, 0);
386			}
387
388	root	1.6	my ($oldmap, $oldx, $oldy) = ($ob->map, $ob->x, $ob->y);
389
390	root	1.4	#TODO: do this in the background, freeze the player if required
391	root	1.1	sync_job {
392	root	1.3	my ($map, $x, $y);
393	root	1.1
394	root	1.4	unless ($exit) {
395			# used on login only(?)
396			$map = cf::map::find_map_nb $ob->contr->maplevel;
397			($x, $y) = ($ob->x, $ob->y);
398	root	1.6
399			unless ($map) {
400			$map = cf::map::find_map_nb $emergency_position->[0]
401			or die "FATAL: cannot load emergency map\n";
402			$x = $emergency_position->[1];
403			$y = $emergency_position->[2];
404			}
405
406			} elsif ($exit->slaying eq "!") {
407	root	1.4	} else {
408	root	1.1	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
409
410	root	1.3	$map = cf::map::find_map_nb $path->as_string;
411	root	1.1	$map = $map->customise_for ($ob) if $map;
412	root	1.3	($x, $y) = ($exit->stats->hp, $exit->stats->sp);
413	root	1.4	}
414	root	1.1
415	root	1.4	unless ($map) {
416	root	1.6	$ob->message ("The exit is closed", cf::NDI_UNIQUE \| cf::NDI_RED);
417			# restore original map position
418			($map, $x, $y) = ($oldmap, $oldx, $oldy);
419	root	1.3	}
420	root	1.1
421	root	1.6	warn "entering ", $map->path, " at ($x, $y)\n";#d#
422			$map->do_load_nb;
423			$ob->enter_map ($map, $x, $y);
424	root	1.1	}
425			}
426
427			sub cf::map::customise_for {
428			my ($map, $ob) = @_;
429
430			if ($map->per_player) {
431			return cf::map::find_map_nb "~" . $ob->name . "/" . $map->{path}{path};
432			}
433
434			$map
435			}
436
437			sub cf::map::emergency_save {
438			local $cf::FREEZE = 1;
439
440	root	1.4	warn "enter emergency map save\n";
441
442			my $saver = async {
443			warn "begin emergency map save\n";
444			$_->save for values %cf::MAP;
445			};
446			$saver->prio (Coro::PRIO_MAX);
447			$saver->join;
448
449	root	1.1	warn "emergency map save drain\n";
450			Event::one_event while IO::AIO::nreqs;
451			warn "end emergency map save\n";
452			}
453