server/ext/00_map_handling.ext

#! perl

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

use Digest::MD5;
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;

our $RANDOM_MAPS = cf::localdir . "/random";
mkdir $RANDOM_MAPS;

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

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

   $map->width (41);
   $map->height (41);
   $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 $self = bless { }, $class;

      if ($path =~ s{^\?random/}{}) {
         $self->{random} = cf::from_json $path;
      } else {
         if ($path =~ s{^~([^/]+)?}{}) {
            $self->{user_rel} = 1;

            if (defined $1) {
               $self->{user} = $1;
            } elsif ($base =~ m{^~([^/]+)/}) {
               $self->{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{/[^/]+/\.\./}{/};
         }
      }

      $self->{path} = $path;

      $self
   }

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

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

   # the displayed name, this is a one way mapping
   sub visible_name {
      my ($self) = @_;

      $self->{random} ? "?random/$self->{random}{origin_map}+$self->{random}{origin_x}+$self->{random}{origin_y}/$self->{random}{dungeon_level}"
                      : $self->as_string
   }

   # 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
      : $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, Digest::MD5::md5_hex $self->{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} || $self->{random}
         ? undef
         : sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
   }

   # return random map parameters, or undef
   sub random_map_params {
      my ($self) = @_;

      $self->{random}
   }
}

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 {
   Coro::Timer::sleep 3600;#d#TODO#for debugging only
   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 generate_random_map {
   my ($path, $rmp) = @_;

   # mit "rum" bekleckert, nicht
   cf::map::_create_random_map
      $path,
      $rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
      $rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
      $rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
      $rmp->{exit_on_final_map},
      $rmp->{xsize}, $rmp->{ysize},
      $rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
      $rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
      $rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
      $rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
      $rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
      $rmp->{region}
}

sub parse_random_map_params {
   my ($spec) = @_;

   my $rmp = { # defaults
      xsize => 10,
      ysize => 10,
   };

   for (split /\n/, $spec) {
      my ($k, $v) = split /\s+/, $_, 2;

      $rmp->{lc $k} = $v if (length $k) && (length $v);
   }

   $rmp
}

sub prepare_random_map {
   my ($exit) = @_;

   # all this does is basically rpelace the /! path by
   # a new random map path (?random/...) with a seed
   # that depends on the exit object

   my $rmp = parse_random_map_params $exit->msg;

   if ($exit->map) {
      $rmp->{region}     = $exit->map->region ? $exit->map->region->name : undef;
      $rmp->{origin_map} = $exit->map->path;
      $rmp->{origin_x}   = $exit->x;
      $rmp->{origin_y}   = $exit->y;
   }

   $rmp->{random_seed} = $exit->random_seed;

   $exit->slaying ("?random/" . cf::to_json $rmp);
   $exit->msg (undef);
}

# 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 {
   my ($path, $origin) = @_;

   warn "find_map<$path,$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) {
         if (my $rmp = $path->random_map_params) {
            $map = generate_random_map $key, $rmp;
         } else {
            $map = try_load_header $path->load_path;
         }

         $map or return;

         $map->{reset_time} = $cf::RUNTIME + $map->reset_timeout;
         $map->instantiate;

         # per-player maps become, after loading, normal maps
         $map->per_player (0) if $path->{user_rel};
      }

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

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

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

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

   return if $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::load_map_sync {
   my ($path, $origin) = @_;

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

   cf::abort if $path =~ /CVS/;#d#

   cf::sync_job {
      my $map = cf::map::find_map $path, $origin
         or return;
      $map->load;
      $map
   }
}

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

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

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

   return unless $self->dirty;

   $self->{load_path} = $save;

   return if $self->{path}{path} =~ /^\/styles\//;

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

   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);
   }
}

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

   return if $self->players;
   return if $self->in_memory != cf::MAP_IN_MEMORY;

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

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

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

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

   $ob->enter_map ($LINK_MAP, 20, 20);
   $ob->deactivate_recursive;

   (Coro::async {
      my ($map, $x, $y);
      unless (eval {

         prepare_random_map $exit
            if $exit->slaying eq "/!";

         my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;

         $map = cf::map::find_map $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);

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

         # use -1, -1 as default coordinates, not 0, 0
         ($x, $y) = ($map->enter_x, $map->enter_y)
            if $x <=0 && $y <= 0;

         warn "entering ", $map->path, " at ($x, $y)\n";#d#
         $map->load;
         1;
      }) {
         ($map, $x, $y) = ($oldmap, $oldx, $oldy);

         $ob->message ("Something went wrong within the server. "
                     . "I'll try to bring you back to the map you were before. "
                     . "Please report this to the dungeon master",
                       cf::NDI_UNIQUE | cf::NDI_RED);

         warn "ERROR in enter_exit: $@";
      }
      $ob->activate_recursive;
      $ob->enter_map ($map, $x, $y);
   })->prio (1);
}

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

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

   $map
}

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

   warn "enter emergency map save\n";

   cf::sync_job {
      warn "begin emergency map save\n";
      $_->save for values %cf::MAP;
   };

   warn "end emergency map save\n";
}

Revision:	1.9
Committed:	Sun Dec 31 17:17:22 2006 UTC (17 years, 4 months ago) by root
Branch:	MAIN
Changes since 1.8:	+134 -94 lines
Log Message:	many minor changes everywhere, random maps crash sometimes but design is in place
#	User	Rev	Content
1	root	1.1	#! perl
2
3			# why this is an extension is a good question. next question.
4
5	root	1.9	use Digest::MD5;
6	root	1.1	use Fcntl;
7
8			use Coro;
9			use Coro::AIO;
10
11			our $emergency_position = $cf::CFG{emergency_position} \|\| ["/world/world_105_115", 5, 37];
12
13			our $DEACTIVATE_TIMEOUT = 60; # number of seconds after which maps get deactivated to save cpu
14			our $SWAP_TIMEOUT = 600; # number of seconds after which maps inactive get swapped out
15			our $SCHEDULE_INTERVAL = 8; # time the map scheduler sleeps between runs
16			our $SAVE_TIMEOUT = 60; # save maps every n seconds
17			our $SAVE_INTERVAL = 0.4; # save at max. one map every $SAVE_HOLD
18			our $MAX_RESET = 7200;
19
20	root	1.9	our $RANDOM_MAPS = cf::localdir . "/random";
21			mkdir $RANDOM_MAPS;
22
23	root	1.1	$DEACTIVATE_TIMEOUT = 3;#d#
24			$SWAP_TIMEOUT = 5;#d#
25			$SCHEDULE_INTERVAL = 1;
26
27			$cf::LINK_MAP \|\|= do {
28			my $map = cf::map::new;
29
30	root	1.9	$map->width (41);
31			$map->height (41);
32	root	1.1	$map->alloc;
33			$map->path ("{link}");
34			$map->{path} = bless { path => "{link}" }, "cf::path";
35			$map->in_memory (cf::MAP_IN_MEMORY);
36
37			$map
38			};
39
40			{
41			package cf::path;
42
43			sub new {
44			my ($class, $path, $base) = @_;
45
46	root	1.9	my $self = bless { }, $class;
47	root	1.1
48	root	1.9	if ($path =~ s{^\?random/}{}) {
49			$self->{random} = cf::from_json $path;
50			} else {
51			if ($path =~ s{^~([^/]+)?}{}) {
52			$self->{user_rel} = 1;
53	root	1.1
54	root	1.9	if (defined $1) {
55			$self->{user} = $1;
56			} elsif ($base =~ m{^~([^/]+)/}) {
57			$self->{user} = $1;
58			} else {
59			warn "cannot resolve user-relative path without user <$path,$base>\n";
60			}
61			} elsif ($path =~ /^\//) {
62			# already absolute
63	root	1.1	} else {
64	root	1.9	$base =~ s{[^/]+/?$}{};
65			return $class->new ("$base/$path");
66	root	1.1	}
67
68	root	1.9	for ($path) {
69			redo if s{/\.?/}{/};
70			redo if s{/[^/]+/\.\./}{/};
71			}
72	root	1.1	}
73
74	root	1.9	$self->{path} = $path;
75	root	1.1
76	root	1.9	$self
77	root	1.1	}
78
79			# the name / primary key / in-game path
80			sub as_string {
81			my ($self) = @_;
82
83	root	1.9	$self->{user_rel} ? "~$self->{user}$self->{path}"
84			: $self->{random} ? "?random/$self->{path}"
85			: $self->{path}
86			}
87
88			# the displayed name, this is a one way mapping
89			sub visible_name {
90			my ($self) = @_;
91
92			$self->{random} ? "?random/$self->{random}{origin_map}+$self->{random}{origin_x}+$self->{random}{origin_y}/$self->{random}{dungeon_level}"
93			: $self->as_string
94	root	1.1	}
95
96			# escape the /'s in the path
97	root	1.9	sub _escaped_path {
98	root	1.1	# ∕ is U+2215
99			(my $path = $_[0]{path}) =~ s/\//∕/g;
100			$path
101			}
102
103			# the original (read-only) location
104			sub load_path {
105			my ($self) = @_;
106
107			sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
108			}
109
110			# the temporary/swap location
111			sub save_path {
112			my ($self) = @_;
113
114	root	1.9	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
115			: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, Digest::MD5::md5_hex $self->{path}
116			: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
117	root	1.1	}
118
119			# the unique path, might be eq to save_path
120			sub uniq_path {
121			my ($self) = @_;
122
123	root	1.9	$self->{user_rel} \|\| $self->{random}
124	root	1.1	? undef
125	root	1.9	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
126			}
127
128			# return random map parameters, or undef
129			sub random_map_params {
130			my ($self) = @_;
131
132			$self->{random}
133	root	1.1	}
134			}
135
136			sub write_runtime {
137			my $runtime = cf::localdir . "/runtime";
138
139			my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
140			or return;
141
142			my $value = $cf::RUNTIME;
143			(aio_write $fh, 0, (length $value), $value, 0) <= 0
144			and return;
145
146			aio_fsync $fh
147			and return;
148
149			close $fh
150			or return;
151
152			aio_rename "$runtime~", $runtime
153			and return;
154
155			1
156			}
157
158	root	1.4	(Coro::async {
159	root	1.1	unless (write_runtime) {
160			warn "unable to write runtime file: $!";
161			exit 1;
162			}
163	root	1.4	})->prio (Coro::PRIO_MAX);
164	root	1.1
165			our $SCHEDULER = cf::coro {
166	root	1.8	Coro::Timer::sleep 3600;#d#TODO#for debugging only
167	root	1.1	while () {
168			Coro::Timer::sleep $SCHEDULE_INTERVAL;
169
170			write_runtime
171			or warn "unable to write runtime file: $!";
172
173			for my $map (values %cf::MAP) {
174			eval {
175			next if $map->in_memory != cf::MAP_IN_MEMORY;
176	root	1.6	next if $map->players;
177	root	1.1	my $last_access = $map->last_access;
178			# not yet, because maps might become visible to players nearby
179			# we need a tiled meta map for this to work
180			# if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) {
181			# $map->deactivate;
182			# delete $map->{active};
183			# }
184			if ($map->should_reset) {
185			$map->reset;
186			} elsif ($last_access + $SWAP_TIMEOUT <= $cf::RUNTIME) {
187			$map->swap_out;
188			Coro::Timer::sleep $SAVE_INTERVAL;
189			} elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) {
190			$map->save;
191			Coro::Timer::sleep $SAVE_INTERVAL;
192			}
193			};
194			warn $@ if $@;
195			cede;
196			}
197			}
198			};
199			$SCHEDULER->prio (-2);
200
201	root	1.8	sub generate_random_map {
202			my ($path, $rmp) = @_;
203
204			# mit "rum" bekleckert, nicht
205			cf::map::_create_random_map
206			$path,
207			$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
208			$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
209			$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
210			$rmp->{exit_on_final_map},
211			$rmp->{xsize}, $rmp->{ysize},
212			$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
213			$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
214			$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
215			$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
216			$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
217			$rmp->{region}
218			}
219
220			sub parse_random_map_params {
221			my ($spec) = @_;
222
223	root	1.9	my $rmp = { # defaults
224			xsize => 10,
225			ysize => 10,
226			};
227	root	1.8
228			for (split /\n/, $spec) {
229			my ($k, $v) = split /\s+/, $_, 2;
230
231			$rmp->{lc $k} = $v if (length $k) && (length $v);
232			}
233
234			$rmp
235			}
236
237			sub prepare_random_map {
238			my ($exit) = @_;
239
240	root	1.9	# all this does is basically rpelace the /! path by
241			# a new random map path (?random/...) with a seed
242			# that depends on the exit object
243
244	root	1.8	my $rmp = parse_random_map_params $exit->msg;
245
246	root	1.9	if ($exit->map) {
247			$rmp->{region} = $exit->map->region ? $exit->map->region->name : undef;
248			$rmp->{origin_map} = $exit->map->path;
249			$rmp->{origin_x} = $exit->x;
250			$rmp->{origin_y} = $exit->y;
251			}
252	root	1.1
253	root	1.9	$rmp->{random_seed} = $exit->random_seed;
254	root	1.1
255	root	1.9	$exit->slaying ("?random/" . cf::to_json $rmp);
256			$exit->msg (undef);
257	root	1.1	}
258
259			# and all this just because we cannot iterate over
260			# all maps in C++...
261			sub cf::map::change_all_map_light {
262			my ($change) = @_;
263
264			$_->change_map_light ($change) for values %cf::MAP;
265			}
266
267			sub try_load_header($) {
268			my ($path) = @_;
269
270			utf8::encode $path;
271			aio_open $path, O_RDONLY, 0
272			or return;
273
274			my $map = cf::map::new
275			or return;
276
277			$map->load_header ($path)
278			or return;
279
280			$map->reset_time (0) if $map->reset_time > $cf::RUNTIME;
281			$map->reset_timeout (10);#d#
282
283			$map->{load_path} = $path;
284
285			$map
286			}
287
288	root	1.8	sub cf::map::find_map {
289	root	1.1	my ($path, $origin) = @_;
290
291	root	1.8	warn "find_map<$path,$origin>\n";#d#
292	root	1.3
293	root	1.1	$path = ref $path ? $path : new cf::path $path, $origin && $origin->path;
294			my $key = $path->as_string;
295
296			$cf::MAP{$key} \|\| do {
297			# do it the slow way
298			my $map = try_load_header $path->save_path;
299
300			if (!$map) {
301	root	1.9	if (my $rmp = $path->random_map_params) {
302			$map = generate_random_map $key, $rmp;
303			} else {
304			$map = try_load_header $path->load_path;
305			}
306
307			$map or return;
308	root	1.8
309	root	1.9	$map->{reset_time} = $cf::RUNTIME + $map->reset_timeout;
310	root	1.8	$map->instantiate;
311
312			# per-player maps become, after loading, normal maps
313			$map->per_player (0) if $path->{user_rel};
314	root	1.1	}
315
316			$map->path ($key);
317			$map->{path} = $path;
318
319			$map->reset if $map->should_reset;
320
321			$cf::MAP{$key} = $map
322			}
323			}
324
325	root	1.8	sub cf::map::load {
326	root	1.1	my ($self) = @_;
327
328	root	1.8	return if $self->in_memory != cf::MAP_SWAPPED;
329	root	1.1
330			$self->in_memory (cf::MAP_LOADING);
331
332			my $path = $self->{path};
333
334			$self->alloc;
335			$self->load_objects ($self->{load_path}, 1)
336			or return;
337
338			if (my $uniq = $path->uniq_path) {
339			utf8::encode $uniq;
340			if (aio_open $uniq, O_RDONLY, 0) {
341			$self->clear_unique_items;
342			$self->load_objects ($uniq, 0);
343			}
344			}
345
346			# now do the right thing for maps
347			$self->link_multipart_objects;
348			$self->fix_auto_apply;
349			$self->decay_objects;
350			$self->update_buttons;
351			$self->set_darkness_map;
352			$self->difficulty ($self->estimate_difficulty)
353			unless $self->difficulty;
354	elmex	1.5	$self->activate;
355	root	1.1
356			$self->in_memory (cf::MAP_IN_MEMORY);
357			}
358
359	root	1.8	sub cf::map::load_map_sync {
360			my ($path, $origin) = @_;
361	root	1.1
362	root	1.8	warn "load_map_sync<$path, $origin>\n";#d#
363	root	1.1
364	root	1.9	cf::abort if $path =~ /CVS/;#d#
365
366			cf::sync_job {
367	root	1.8	my $map = cf::map::find_map $path, $origin
368			or return;
369			$map->load;
370			$map
371			}
372	root	1.1	}
373
374			sub cf::map::save {
375			my ($self) = @_;
376
377			my $save = $self->{path}->save_path; utf8::encode $save;
378			my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
379
380	root	1.9	$self->{last_save} = $cf::RUNTIME;
381
382			return unless $self->dirty;
383
384			$self->{load_path} = $save;
385
386			return if $self->{path}{path} =~ /^\/styles\//;
387
388			warn "saving map ", $self->path;
389
390	root	1.1	if ($uniq) {
391			$self->save_objects ($save, cf::IO_HEADER \| cf::IO_OBJECTS);
392			$self->save_objects ($uniq, cf::IO_UNIQUES);
393			} else {
394			$self->save_objects ($save, cf::IO_HEADER \| cf::IO_OBJECTS \| cf::IO_UNIQUES);
395			}
396			}
397
398	root	1.2	sub cf::map::swap_out {
399			my ($self) = @_;
400
401	root	1.6	return if $self->players;
402	root	1.8	return if $self->in_memory != cf::MAP_IN_MEMORY;
403	root	1.6
404	root	1.8	$self->save;
405	root	1.2	$self->clear;
406			$self->in_memory (cf::MAP_SWAPPED);
407			}
408
409	root	1.1	sub cf::map::should_reset {
410			my ($map) = @_;
411
412	root	1.9	return;#d#
413	root	1.1	# TODO: safety, remove and allow resettable per-player maps
414			return if $map->{path}{user_rel};#d#
415			return unless $map->reset_timeout;
416
417	root	1.9	my $time = $map->fixed_resettime ? $map->{reset_time} : $map->last_access;
418	root	1.1
419			$time + $map->reset_timeout < $cf::RUNTIME
420			}
421
422			sub cf::map::reset {
423			my ($self) = @_;
424
425			return if $self->players;
426	root	1.3	return if $self->{path}{user_rel};#d#
427	root	1.1
428			warn "resetting map ", $self->path;#d#
429	root	1.9	return;#d#
430	root	1.3
431			utf8::encode (my $save = $self->{path}->save_path);
432			aioreq_pri 3; IO::AIO::aio_unlink $save;
433			aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
434	root	1.1
435			$self->clear;
436			$self->in_memory (cf::MAP_SWAPPED);
437	root	1.3	utf8::encode ($self->{load_path} = $self->{path}->load_path);
438	root	1.1	}
439
440			sub cf::object::player::enter_exit {
441			my ($ob, $exit) = @_;
442
443	root	1.6	return unless $ob->type == cf::PLAYER;
444
445			my ($oldmap, $oldx, $oldy) = ($ob->map, $ob->x, $ob->y);
446
447	root	1.9	$ob->enter_map ($LINK_MAP, 20, 20);
448			$ob->deactivate_recursive;
449
450			(Coro::async {
451	root	1.3	my ($map, $x, $y);
452	root	1.9	unless (eval {
453	root	1.1
454	root	1.9	prepare_random_map $exit
455			if $exit->slaying eq "/!";
456	root	1.1
457	root	1.9	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
458	root	1.8
459	root	1.9	$map = cf::map::find_map $path->as_string;
460			$map = $map->customise_for ($ob) if $map;
461			($x, $y) = ($exit->stats->hp, $exit->stats->sp);
462	root	1.8
463	root	1.9	unless ($map) {
464			$ob->message ("The exit is closed", cf::NDI_UNIQUE \| cf::NDI_RED);
465	root	1.7
466	root	1.9	# restore original map position
467			($map, $x, $y) = ($oldmap, $oldx, $oldy);
468	root	1.7
469	root	1.9	unless ($map) {
470			$map = cf::map::find_map $emergency_position->[0]
471			or die "FATAL: cannot load emergency map\n";
472			$x = $emergency_position->[1];
473			$y = $emergency_position->[2];
474			}
475	root	1.7	}
476	root	1.1
477	root	1.9	# use -1, -1 as default coordinates, not 0, 0
478			($x, $y) = ($map->enter_x, $map->enter_y)
479			if $x <=0 && $y <= 0;
480
481			warn "entering ", $map->path, " at ($x, $y)\n";#d#
482			$map->load;
483			1;
484			}) {
485			($map, $x, $y) = ($oldmap, $oldx, $oldy);
486
487			$ob->message ("Something went wrong within the server. "
488			. "I'll try to bring you back to the map you were before. "
489			. "Please report this to the dungeon master",
490			cf::NDI_UNIQUE \| cf::NDI_RED);
491	root	1.7
492	root	1.9	warn "ERROR in enter_exit: $@";
493			}
494			$ob->activate_recursive;
495	root	1.6	$ob->enter_map ($map, $x, $y);
496	root	1.9	})->prio (1);
497	root	1.1	}
498
499			sub cf::map::customise_for {
500			my ($map, $ob) = @_;
501
502			if ($map->per_player) {
503	root	1.8	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
504	root	1.1	}
505
506			$map
507			}
508
509			sub cf::map::emergency_save {
510			local $cf::FREEZE = 1;
511
512	root	1.4	warn "enter emergency map save\n";
513
514	root	1.9	cf::sync_job {
515	root	1.4	warn "begin emergency map save\n";
516			$_->save for values %cf::MAP;
517			};
518
519	root	1.1	warn "end emergency map save\n";
520			}
521