Add Sound#loop_count=.

lib/dxruby_sdl/sound.rb

@@ -32,8 +32,9 @@ def initialize(filename)
       end
     end
 
-    def_delegators :@sound, :play, :set_volume, :stop
+    def_delegators :@sound, :play, :loop_count=, :set_volume, :stop
 
+    alias_method :loopCount=, :loop_count=
     alias_method :setVolume, :set_volume
 
     private
@@ -43,10 +44,15 @@ class Music
 
       def initialize(filename)
         @music = SDL::Mixer::Music.load(filename)
+        @_loop_count = -1
       end
 
       def play
-        SDL::Mixer.play_music(@music, -1)
+        SDL::Mixer.play_music(@music, @_loop_count)
+      end
+
+      def loop_count=(n)
+        @_loop_count = n
       end
 
       def set_volume(volume, time = 0)
@@ -69,17 +75,22 @@ class Wave
       def initialize(filename)
         @wave = SDL::Mixer::Wave.load(filename)
         @last_played_channel = nil
+        @_loop_count = 0
       end
 
       def play
-        @last_played_channel = SDL::Mixer.play_channel(-1, @wave, 0)
+        @last_played_channel = SDL::Mixer.play_channel(-1, @wave, @_loop_count)
       rescue SDL::Error => e
         if /No free channels available/ =~ e.message
           SDL::Mixer.halt(@last_played_channel == 0 ? 1 : 0)
           retry
         end
       end
 
+      def loop_count=(n)
+        @_loop_count = n
+      end
+
       def set_volume(volume, time = 0)
         if time > 0
           raise NotImplementedError, 'Sound#set_volume(volume, time != 0)'

spec/lib/dxruby_sdl/sound_spec.rb

@@ -81,6 +81,28 @@
     end
   end
 
+  describe '#loop_count=' do
+    context 'WAVE file', wave: true do
+      it 'SDL::Waveのループ回数を変更する' do
+        wave =
+          sound.instance_variable_get('@sound').instance_variable_get('@wave')
+        expect(SDL::Mixer).to receive(:play_channel).with(-1, wave, 1)
+        sound.loop_count = 1
+        sound.play
+      end
+    end
+
+    context 'MIDI file', midi: true do
+      it 'SDL::Musicのループ回数を変更する' do
+        music =
+          sound.instance_variable_get('@sound').instance_variable_get('@music')
+        expect(SDL::Mixer).to receive(:play_music).with(music, 1)
+        sound.loop_count = 1
+        sound.play
+      end
+    end
+  end
+
   describe '#stop' do
     it '再生していないサウンドを停止でエラーが発生しない' do
       sound = DXRubySDL::Sound.new(fixture_path('sound.wav'))