1 files changed, 45 insertions, 0 deletions
diff --git a/src/crepe/system/AudioSystem.h b/src/crepe/system/AudioSystem.h
new file mode 100644
index 0000000..a004c60
--- /dev/null
+++ b/src/crepe/system/AudioSystem.h
@@ -0,0 +1,45 @@
+#pragma once
+
+#include "../facade/SoundContext.h"
+#include "../facade/Sound.h"
+#include "../api/AudioSource.h"
+
+#include "System.h"
+
+namespace crepe {
+
+class AudioSystem : public System {
+public:
+	using System::System;
+	void update() override;
+
+private:
+	/**
+	 * \brief Private data stored by AudioSystem on AudioSource component
+	 */
+	struct ComponentPrivate {
+		//! This sample's voice handle
+		Sound::Handle handle;
+
+		/**
+		 * \name State diffing variables
+		 * \{
+		 */
+		typeof(AudioSource::active) last_active;
+		typeof(AudioSource::volume) last_volume;
+		typeof(AudioSource::loop) last_loop;
+		//! \}
+	};
+
+	void update_last(const AudioSource & component, ComponentPrivate & data);
+
+	void diff_update(AudioSource & component, ComponentPrivate & data, Sound & resource);
+
+protected:
+	virtual SoundContext & get_context();
+private:
+	Private context;
+};
+
+} // namespace crepe
+