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/cvs/deliantra/server/lib/cf.pm
Revision: 1.15
Committed: Sun Jun 11 15:02:16 2006 UTC (17 years, 11 months ago) by root
Branch: MAIN
Changes since 1.14: +29 -0 lines
Log Message:
implement 'ext' packet for extensions to hook directly into the protocol

File Contents

# Content
1 package cf;
2
3 use Symbol;
4 use List::Util;
5 use Storable;
6
7 use strict;
8
9 our %COMMAND;
10 our @EVENT;
11 our %PROP_TYPE;
12 our %PROP_IDX;
13
14 BEGIN {
15 @EVENT = map lc, @EVENT;
16
17 *CORE::GLOBAL::warn = sub {
18 my $msg = join "", @_;
19 $msg .= "\n"
20 unless $msg =~ /\n$/;
21
22 print STDERR "cfperl: $msg";
23 LOG llevError, "cfperl: $msg";
24 };
25 }
26
27 my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!
28
29 # generate property mutators
30 sub prop_gen {
31 my ($prefix, $class) = @_;
32
33 no strict 'refs';
34
35 for my $prop (keys %PROP_TYPE) {
36 $prop =~ /^\Q$prefix\E_(.*$)/ or next;
37 my $sub = lc $1;
38
39 my $type = $PROP_TYPE{$prop};
40 my $idx = $PROP_IDX {$prop};
41
42 *{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
43 $_[0]->get_property ($type, $idx)
44 };
45
46 *{"$class\::set_$sub"} = sub {
47 $_[0]->set_property ($type, $idx, $_[1]);
48 } unless $ignore_set{$prop};
49 }
50 }
51
52 # auto-generate most of the API
53
54 prop_gen OBJECT_PROP => "cf::object";
55 # CFAPI_OBJECT_ANIMATION?
56 prop_gen PLAYER_PROP => "cf::object::player";
57
58 prop_gen MAP_PROP => "cf::map";
59 prop_gen ARCH_PROP => "cf::arch";
60
61 # guessed hierarchies
62
63 @cf::object::player::ISA = 'cf::object';
64 @cf::object::map::ISA = 'cf::object';
65
66 my %ext_pkg;
67 my @exts;
68 my @hook;
69 my %command;
70 my %extcmd;
71
72 sub inject_event {
73 my $extension = shift;
74 my $event_code = shift;
75
76 my $cb = $hook[$event_code]{$extension}
77 or return;
78
79 &$cb
80 }
81
82 sub inject_global_event {
83 my $event = shift;
84
85 my $cb = $hook[$event]
86 or return;
87
88 List::Util::max map &$_, values %$cb
89 }
90
91 sub inject_command {
92 my ($name, $obj, $params) = @_;
93
94 for my $cmd (@{ $command{$name} }) {
95 $cmd->[1]->($obj, $params);
96 }
97
98 -1
99 }
100
101 sub register_command {
102 my ($name, $time, $cb) = @_;
103
104 my $caller = caller;
105
106 warn "registering command '$name/$time' to '$caller'";
107
108 push @{ $command{$name} }, [$time, $cb, $caller];
109 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
110 }
111
112 sub register {
113 my ($base, $pkg) = @_;
114
115 for my $idx (0 .. $#EVENT) {
116 if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
117 warn "registering $EVENT[$idx] hook to '$pkg'\n";
118 $hook[$idx]{$base} = $ref;
119 }
120 }
121 }
122
123 sub load_extension {
124 my ($path) = @_;
125
126 $path =~ /([^\/\\]+)\.ext$/ or die "$path";
127 my $base = $1;
128 my $pkg = $1;
129 $pkg =~ s/[^[:word:]]/_/g;
130 $pkg = "cf::ext::$pkg";
131
132 warn "loading '$path' into '$pkg'\n";
133
134 open my $fh, "<:utf8", $path
135 or die "$path: $!";
136
137 my $source =
138 "package $pkg; use strict; use utf8;\n"
139 . "#line 1 \"$path\"\n{\n"
140 . (do { local $/; <$fh> })
141 . "\n};\n1";
142
143 eval $source
144 or die "$path: $@";
145
146 push @exts, $pkg;
147 $ext_pkg{$base} = $pkg;
148
149 # no strict 'refs';
150 # @{"$pkg\::ISA"} = cf::ext::;
151
152 register $base, $pkg;
153 }
154
155 sub unload_extension {
156 my ($pkg) = @_;
157
158 warn "removing extension $pkg\n";
159
160 # remove hooks
161 for my $idx (0 .. $#EVENT) {
162 delete $hook[$idx]{$pkg};
163 }
164
165 # remove commands
166 for my $name (keys %command) {
167 my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
168
169 if (@cb) {
170 $command{$name} = \@cb;
171 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
172 } else {
173 delete $command{$name};
174 delete $COMMAND{"$name\000"};
175 }
176 }
177
178 # remove extcmds
179 for my $name (keys %command) {
180 my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
181
182 if (@cb) {
183 $command{$name} = \@cb;
184 $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
185 } else {
186 delete $command{$name};
187 delete $COMMAND{"$name\000"};
188 }
189 }
190
191
192 Symbol::delete_package $pkg;
193 }
194
195 sub load_extensions {
196 my $LIBDIR = maps_directory "perl";
197
198 for my $ext (<$LIBDIR/*.ext>) {
199 next unless -r $ext;
200 eval {
201 load_extension $ext;
202 1
203 } or warn "$ext not loaded: $@";
204 }
205 }
206
207 register_command "perl-reload", 0, sub {
208 my ($who, $arg) = @_;
209
210 if ($who->flag (FLAG_WIZ)) {
211 $who->message ("reloading...");
212
213 warn "reloading...\n";
214 eval {
215 unload_extension $_ for @exts;
216 delete $INC{"cf.pm"};
217
218 # don't, removes xs symbols, too
219 #Symbol::delete_package $pkg;
220
221 require cf;
222 };
223 warn $@ if $@;
224 $who->message ($@) if $@;
225 warn "reloaded\n";
226
227 $who->message ("reloaded");
228 } else {
229 $who->message ("Intruder Alert!");
230 }
231 };
232
233 #############################################################################
234 # extcmd framework, basically convert ext <id> <pkg> arg1 args
235 # into pkg::->on_extcmd_arg1 (...) while shortcutting a few
236
237 sub on_extcmd {
238 my ($pl, $buf) = @_;
239
240 my ($id, $pkg, $name, $data) = split / /, $buf, 4;
241
242 if (my $method = "cf::ext::$pkg"->can ("on_extcmd_$name")) {
243 $method->($pl, $id, $buf);
244 }
245 }
246
247 #############################################################################
248 # load/save/clean perl data associated with a map
249
250 *on_mapclean = sub {
251 my ($map) = @_;
252
253 my $path = $map->tmpname;
254 defined $path or return;
255
256 unlink "$path.cfperl";
257 };
258
259 *on_mapin =
260 *on_mapload = sub {
261 my ($map) = @_;
262
263 my $path = $map->tmpname;
264 $path = $map->path unless defined $path;
265
266 open my $fh, "<:raw", "$path.cfperl"
267 or return; # no perl data
268
269 my $data = Storable::thaw do { local $/; <$fh> };
270
271 $data->{version} <= 1
272 or return; # too new
273
274 $map->_set_obs ($data->{obs});
275 };
276
277 *on_mapout = sub {
278 my ($map) = @_;
279
280 my $path = $map->tmpname;
281 $path = $map->path unless defined $path;
282
283 my $obs = $map->_get_obs;
284
285 if (defined $obs) {
286 open my $fh, ">:raw", "$path.cfperl"
287 or die "$path.cfperl: $!";
288
289 stat $path;
290
291 print $fh Storable::nfreeze {
292 size => (stat _)[7],
293 time => (stat _)[9],
294 version => 1,
295 obs => $obs,
296 };
297
298 chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
299 } else {
300 unlink "$path.cfperl";
301 }
302 };
303
304 #############################################################################
305 # load/save perl data associated with player->ob objects
306
307 *on_player_load = sub {
308 my ($ob, $path) = @_;
309
310 if (open my $fh, "<:raw", "$path.cfperl") {
311
312 #d##TODO#remove
313
314 my $data = Storable::thaw do { local $/; <$fh> };
315
316 $data->{version} <= 1
317 or return; # too new
318
319 %$ob = %{$data->{ob}};
320 return;
321 }
322
323 for my $o ($ob, $ob->inv) {
324 if (my $value = $o->get_ob_key_value ("_perl_data")) {
325 $o->set_ob_key_value ("_perl_data");
326
327 %$o = %{ Storable::thaw pack "H*", $value };
328 }
329 }
330 };
331
332 *on_player_save = sub {
333 my ($ob, $path) = @_;
334
335 $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
336 for grep %$_, $ob, $ob->inv;
337
338 unlink "$path.cfperl";#d##TODO#remove
339 };
340
341 register "<global>", __PACKAGE__;
342
343 load_extensions;
344
345 1
346