--- deliantra/server/ext/player-env.ext	2007/07/11 15:57:30	1.1
+++ deliantra/server/ext/player-env.ext	2007/07/12 08:40:13	1.4
@@ -3,11 +3,105 @@
 # this extension provides "environmental effects",
 # meaning mostly background music and region messages right now.
 
+sub parse_facelist($$) {
+   my ($prefix, $list) = @_;
+
+   return undef
+      unless defined $list;
+
+   #TODO, sort by size (smallest first...)
+   [
+      sort { (cf::face::get_data_size $a) <=> (cf::face::get_data_size $b) }
+      grep $_,
+      map +(cf::face::find "$prefix$_"),
+      split /\s*,\s*/, $list
+   ]
+}
+
+our %MUSIC_QUEUE;
+
+our $MUSIC_SCHEDULER = cf::async_ext {
+   while () {
+      for (keys %MUSIC_QUEUE) {
+         delete $MUSIC_QUEUE{$_};
+         my $pl = cf::player::find_active $_
+            or next;
+
+         my $ns = $pl->ns
+           or next;
+
+         $ns->extcmd
+            or next;
+
+         my $faces;
+
+         my $map = $pl->ob->map
+            or next;
+
+         # 1. update map-specific music info
+         unless (exists $map->{music_faces}) {
+            $map->{music_faces} = parse_facelist "music/", $map->{music};
+         }
+
+         my $faces = $map->{music_faces};
+
+         # 2. fall back to region if no map-specific music
+         unless ($faces) {
+            my $rgn = $pl->ob->region
+               or next;
+
+            unless (exists $rgn->{music_faces}) {
+               my $par = $rgn;
+               while () {
+                  last if exists $par->{music};
+                  $par = $par->parent
+                     or last;
+               }
+
+               $rgn->{music_faces} = parse_facelist "music/", $par->{music};
+            }
+
+            $faces = $rgn->{music_faces};
+         }
+
+         $faces
+            or next;
+
+         my $facestr = join ",", @$faces;
+         $ns->{current_music_faces} ne $facestr
+            or next;
+
+         $ns->{current_music_faces} = $facestr;
+
+         my $msg = {
+            faces => $faces,
+         };
+
+         $msg->{chksum}{$_} = cf::face::get_chksum $_
+            for grep $ns->must_send_face ($_), @$faces;
+
+         $ns->ext_event (music => %$msg);
+
+         cf::cede_to_tick;
+      }
+      Coro::schedule unless %MUSIC_QUEUE;
+   }
+};
+
 cf::player->attach (
    on_region_change => sub {
       my ($pl, $new, $old) = @_;
 
       $pl->ob->message ("You are now " . $new->longname . ". H<Use whereami for more details.>", $new->longname);
+
+      $MUSIC_QUEUE{$pl->ob->name} = undef;
+      $MUSIC_SCHEDULER->ready;
+   },
+   on_map_change => sub {
+      my ($pl, $new) = @_;
+
+      $MUSIC_QUEUE{$pl->ob->name} = undef;
+      $MUSIC_SCHEDULER->ready;
    },
 );