Initial music playlist implementation, added menu music

lib/managers/sound_manager.rb

@@ -7,37 +7,40 @@ class IMICFPS
     @masters = {}
     @effects = []
     @playlists = {}
+    @current_playlist = nil
+    @current_playlist_package = nil
+    @current_playlist_name = nil
+    @current_playlist_index = 0
 
     def self.master_volume
-      1.0
+      window.config.get(:options, :audio, :volume_master)
     end
 
     def self.music_volume
-      0.25 * master_volume
+      window.config.get(:options, :audio, :volume_music) * master_volume
     end
 
     def self.sfx_volume
-      0.5 * master_volume
+      window.config.get(:options, :audio, :volume_sound_effects) * master_volume
     end
 
     def self.load_master(package)
       return if @masters[package]
 
-      yaml = YAML.load_file("#{IMICFPS.assets_path}/#{package}/shared/sound/master.yaml")
-      @masters[package] = yaml
+      hash = JSON.parse(File.read("#{IMICFPS.assets_path}/#{package}/shared/sound/master.json"))
+      @masters[package] = hash
     end
 
     def self.sound(package, name)
-      if data = sound_data(package, name.to_s)
-        get_sample("#{IMICFPS.assets_path}/#{package}/shared/sound/#{data['path']}")
-      else
-        raise "Missing sound: '#{name}' in package '#{package}'"
-      end
+      raise "Missing sound: '#{name}' in package '#{package}'" unless (data = sound_data(package, name.to_s))
+
+      get_sample("#{IMICFPS.assets_path}/#{package}/shared/sound/#{data['path']}")
     end
 
     def self.sound_data(package, name)
       load_master(package)
-      if master = @masters[package]
+
+      if (master = @masters[package])
         return master["sounds"].find { |s| s["name"] == name }
       end
 
@@ -48,8 +51,61 @@ class IMICFPS
       @effects << klass.new(options)
     end
 
+    def self.music(package, name)
+      raise "Missing song: '#{name}' in package '#{package}'" unless (data = music_data(package, name.to_s))
+
+      get_song("#{IMICFPS.assets_path}/#{package}/shared/sound/#{data['path']}")
+    end
+
+    def self.music_data(package, name)
+      load_master(package)
+
+      if (master = @masters[package])
+        return master["music"].find { |s| s["name"] == name }
+      end
+
+      nil
+    end
+
+    def self.playlist_data(package, name)
+      load_master(package)
+
+      if (master = @masters[package])
+        return master.dig("playlists", name.to_s)
+      end
+
+      nil
+    end
+
+    def self.play_playlist(package, name)
+      return if @current_playlist_name == name.to_s
+      return unless (list = playlist_data(package, name.to_s))
+
+      @current_playlist = list
+      @current_playlist_package = package
+      @current_playlist_name = name.to_s
+      @current_playlist_index = 0
+
+      @current_song = music(@current_playlist_package, @current_playlist[@current_playlist_index])
+      @current_song.volume = music_volume
+      @current_song.play
+    end
+
     def self.update
       @effects.each { |e| e.update; @effects.delete(e) if e.done? }
+
+      return unless @current_playlist
+
+      if !@current_song&.playing? && music_volume > 0.0
+        @current_playlist_index += 1
+        @current_playlist_index = 0 if @current_playlist_index >= @current_playlist.size
+
+        @current_song = music(@current_playlist_package, @current_playlist[@current_playlist_index])
+        @current_song.play
+      end
+
+      @current_song&.volume = music_volume
+      @current_song&.stop if music_volume < 0.1
     end
   end
 end