2 files changed, 28 insertions, 5 deletions

diff --git a/src/crepe/system/AudioSystem.cpp b/src/crepe/system/AudioSystem.cpp
index 0696b34..26913c0 100644
--- a/src/crepe/system/AudioSystem.cpp
+++ b/src/crepe/system/AudioSystem.cpp
@@ -52,10 +52,10 @@ void AudioSystem::diff_update(AudioSource & component, ComponentPrivate & data,
 		component.oneshot_stop = false;
 	}
 	if (component.volume != data.last_volume) {
-		context.set_volume(resource, data.handle, component.volume);
+		context.set_volume(data.handle, component.volume);
 	}
 	if (component.loop != data.last_loop) {
-		context.set_loop(resource, data.handle, component.loop);
+		context.set_loop(data.handle, component.loop);
 	}
 }
 
diff --git a/src/crepe/system/AudioSystem.h b/src/crepe/system/AudioSystem.h
index c941470..4d21883 100644
--- a/src/crepe/system/AudioSystem.h
+++ b/src/crepe/system/AudioSystem.h
@@ -14,9 +14,7 @@ public:
 	void update() override;
 
 private:
-	/**
-	 * \brief Private data stored by AudioSystem on AudioSource component
-	 */
+	//! Private data stored by AudioSystem on AudioSource component
 	struct ComponentPrivate {
 		//! This sample's voice handle
 		Sound::Handle handle;
@@ -31,14 +29,39 @@ private:
 		//! \}
 	};
 
+	/**
+	 * \brief Update `last_*` members of \c data
+	 *
+	 * Copies all component properties stored for comparison between AudioSystem::update() calls
+	 *
+	 * \param component Source properties
+	 * \param data Destination properties
+	 */
 	void update_last(const AudioSource & component, ComponentPrivate & data);
 
+	/**
+	 * \brief Compare update component
+	 *
+	 * Compares properties of \c component and \c data, and calls SoundContext functions where
+	 * applicable.
+	 *
+	 * \param component AudioSource component to update
+	 * \param data AudioSource's private data
+	 * \param resource Sound instance for AudioSource's Asset
+	 */
 	void diff_update(AudioSource & component, ComponentPrivate & data, Sound & resource);
 
 protected:
+	/**
+	 * \brief Get SoundContext
+	 *
+	 * SoundContext is retrieved through this function instead of being a direct member of
+	 * AudioSystem to aid with testability.
+	 */
 	virtual SoundContext & get_context();
 
 private:
+	//! Actually stores SoundContext if the base AudioSystem::get_context implementation is used
 	Private context;
 };