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Source/Engine/Audio/Audio.h

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+// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
+
+#pragma once
+
+#include "Engine/Core/Delegate.h"
+#include "Engine/Core/Collections/Array.h"
+#include "Engine/Scripting/ScriptingType.h"
+#include "AudioDevice.h"
+#include "Types.h"
+
+/// <summary>
+/// The audio service used for music and sound effects playback.
+/// </summary>
+API_CLASS(Static) class FLAXENGINE_API Audio
+{
+DECLARE_SCRIPTING_TYPE_NO_SPAWN(Audio);
+    friend class AudioStreamingHandler;
+    friend class AudioClip;
+
+public:
+
+    /// <summary>
+    /// The audio listeners collection registered by the service.
+    /// </summary>
+    static Array<AudioListener*> Listeners;
+
+    /// <summary>
+    /// The audio sources collection registered by the service.
+    /// </summary>
+    static Array<AudioSource*> Sources;
+
+    /// <summary>
+    /// The all audio devices.
+    /// </summary>
+    API_FIELD(ReadOnly) static Array<AudioDevice> Devices;
+
+    /// <summary>
+    /// Event called when audio devices collection gets changed.
+    /// </summary>
+    API_EVENT() static Action DevicesChanged;
+
+    /// <summary>
+    /// Event called when the active audio device gets changed.
+    /// </summary>
+    API_EVENT() static Action ActiveDeviceChanged;
+
+public:
+
+    /// <summary>
+    /// Gets the active device.
+    /// </summary>
+    /// <returns>The active device.</returns>
+    API_PROPERTY() static AudioDevice* GetActiveDevice();
+
+    /// <summary>
+    /// Gets the index of the active device.
+    /// </summary>
+    /// <returns>The active device index.</returns>
+    API_PROPERTY() static int32 GetActiveDeviceIndex();
+
+    /// <summary>
+    /// Sets the index of the active device.
+    /// </summary>
+    /// <param name="index">The index.</param>
+    API_PROPERTY() static void SetActiveDeviceIndex(int32 index);
+
+public:
+
+    /// <summary>
+    /// Gets the master volume applied to all the audio sources (normalized to range 0-1).
+    /// </summary>
+    /// <returns>The value</returns>
+    API_PROPERTY() static float GetMasterVolume();
+
+    /// <summary>
+    /// Sets the master volume applied to all the audio sources (normalized to range 0-1).
+    /// </summary>
+    /// <param name="value">The value.</param>
+    API_PROPERTY() static void SetMasterVolume(float value);
+
+    /// <summary>
+    /// Gets the actual master volume (including all side effects and mute effectors).
+    /// </summary>
+    /// <returns>The final audio volume applied to all the listeners.</returns>
+    API_PROPERTY() static float GetVolume();
+
+    /// <summary>
+    /// Sets the doppler effect factor. Scale for source and listener velocities. Default is 1.
+    /// </summary>
+    /// <param name="value">The value.</param>
+    API_PROPERTY() static void SetDopplerFactor(float value);
+
+public:
+
+    static void OnAddListener(AudioListener* listener);
+    static void OnRemoveListener(AudioListener* listener);
+
+    static void OnAddSource(AudioSource* source);
+    static void OnRemoveSource(AudioSource* source);
+};