--- deliantra/server/ext/player-env.ext	2007/07/11 15:57:30	1.1
+++ deliantra/server/ext/player-env.ext	2012/11/04 02:20:11	1.21
@@ -3,12 +3,130 @@
 # this extension provides "environmental effects",
 # meaning mostly background music and region messages right now.
 
+our %MUSIC_GROUP;
+our %MUSIC_FACE_CACHE; # cleared by reload_facedata
+
+sub reload {
+   cf::trace "loading music config from $DATADIR/music\n";
+
+   0 < Coro::AIO::aio_load "$DATADIR/music", my $data
+      or die "$DATADIR/music $!";
+
+   my $conf = JSON::XS->new->utf8->relaxed->decode ($data);
+   %MUSIC_GROUP = %{ $conf->{group} };
+   %MUSIC_FACE_CACHE = ();
+}
+
+cf::post_init {
+   $_[0] ? cf::async { reload } : reload
+};
+
+sub parse_musiclist($) {
+   my ($list) = @_;
+
+   return undef
+      unless defined $list;
+
+   my @name = split /\s*,\s*/, $list;
+   my @face;
+
+   while (@name) {
+      my $name = shift @name;
+
+      if ($name =~ /^\@(.*)$/) {
+         my $group = $MUSIC_GROUP{$1}
+            or cf::error "music group $1 does not exist (referenced in '$list')";
+
+         unshift @name, @$group;
+      } else {
+         my $face = cf::face::find "music/$name"
+            or "unable to find music face $name (referenced in '$list')";
+
+         push @face, $face
+            if $face;
+      }
+   }
+
+   # sort by size, smallest first, because it'S the fastest to download...
+   [ sort { (cf::face::get_data_size $a) <=> (cf::face::get_data_size $b) } @face ]
+}
+
+our %MUSIC_QUEUE;
+
+our $MUSIC_SCHEDULER = cf::async_ext {
+   $Coro::current->{desc} = "music scheduler";
+
+   while () {
+      for (keys %MUSIC_QUEUE) {
+         delete $MUSIC_QUEUE{$_};
+
+         cf::get_slot 0.01, -10, "music scheduler";
+
+         my $pl = cf::player::find_active $_ or next;
+         my $ob = $pl->ob;
+         my $ns = $pl->ns or next;
+         my $map = $ob->map;
+         my $rgn = $ob->region;
+
+         my $id = join "\x00", $map->path, $rgn->name;
+
+         my $faces = delete $ns->{music_play_once};
+         $faces ||= $MUSIC_FACE_CACHE{$id} ||= do {
+            # 1. map-specific music info
+            parse_musiclist $map->{music}
+               or do {
+                  # 2. fall back to region if no map-specific music
+                  $rgn = $rgn->parent
+                     while $rgn && !exists $rgn->{music};
+
+                  parse_musiclist $rgn->{music}
+               }
+            ;
+         };
+
+         $faces
+            or next;
+
+         my $facestr = join ",", @$faces;
+         $ns->{current_music_faces} ne $facestr
+            or next;
+
+         $ns->{current_music_faces} = $facestr;
+
+         my $pri = 0;
+         $ns->send_face ($_, --$pri - 110)
+            for @$faces;
+         $ns->flush_fx;
+
+         $ns->ext_msg (ambient_music => $faces);
+      }
+      Coro::schedule unless %MUSIC_QUEUE;
+   }
+};
+
 cf::player->attach (
    on_region_change => sub {
       my ($pl, $new, $old) = @_;
 
       $pl->ob->message ("You are now " . $new->longname . ". H<Use whereami for more details.>", $new->longname);
+
+      undef $MUSIC_QUEUE{$pl->ob->name};
+      $MUSIC_SCHEDULER->ready;
+   },
+   on_map_change => sub {
+      my ($pl, $new) = @_;
+
+      undef $MUSIC_QUEUE{$pl->ob->name};
+      $MUSIC_SCHEDULER->ready;
    },
 );
 
+sub play_music_once {
+   my ($pl, $music) = @_;
+
+   $pl->ns->{music_play_once} = parse_musiclist $music;
+
+   undef $MUSIC_QUEUE{$pl->ob->name};
+   $MUSIC_SCHEDULER->ready;
+}