From 969fa3cc73e3523fe066357b4f45ca0b52353fea Mon Sep 17 00:00:00 2001
From: Juan Linietsky <reduzio@gmail.com>
Date: Sun, 18 Jun 2017 21:07:32 -0300
Subject: -Added AudioStreamPlayer2D, for 2D positional sound -Added ability
 for Area2D to redirect positional sound to a specific audio bus

---
 scene/2d/audio_stream_player_2d.h | 96 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 scene/2d/audio_stream_player_2d.h

(limited to 'scene/2d/audio_stream_player_2d.h')

diff --git a/scene/2d/audio_stream_player_2d.h b/scene/2d/audio_stream_player_2d.h
new file mode 100644
index 0000000000..25eff61b76
--- /dev/null
+++ b/scene/2d/audio_stream_player_2d.h
@@ -0,0 +1,96 @@
+#ifndef AUDIO_STREAM_PLAYER_2D_H
+#define AUDIO_STREAM_PLAYER_2D_H
+
+#include "scene/2d/node_2d.h"
+#include "servers/audio/audio_stream.h"
+#include "servers/audio_server.h"
+
+class AudioStreamPlayer2D : public Node2D {
+
+	GDCLASS(AudioStreamPlayer2D, Node2D)
+
+private:
+	enum {
+		MAX_OUTPUTS = 8,
+		MAX_INTERSECT_AREAS = 32
+
+	};
+
+	struct Output {
+
+		AudioFrame vol;
+		int bus_index;
+		Viewport *viewport; //pointer only used for reference to previous mix
+	};
+
+	Output outputs[MAX_OUTPUTS];
+	volatile int output_count;
+	volatile bool output_ready;
+
+	//these are used by audio thread to have a reference of previous volumes (for ramping volume and avoiding clicks)
+	Output prev_outputs[MAX_OUTPUTS];
+	int prev_output_count;
+
+	Ref<AudioStreamPlayback> stream_playback;
+	Ref<AudioStream> stream;
+	Vector<AudioFrame> mix_buffer;
+
+	volatile float setseek;
+	volatile bool active;
+	volatile float setplay;
+
+	float volume_db;
+	bool autoplay;
+	StringName bus;
+
+	void _mix_audio();
+	static void _mix_audios(void *self) { reinterpret_cast<AudioStreamPlayer2D *>(self)->_mix_audio(); }
+
+	void _set_playing(bool p_enable);
+	bool _is_active() const;
+
+	void _bus_layout_changed();
+
+	uint32_t area_mask;
+
+	float max_distance;
+	float attenuation;
+
+protected:
+	void _validate_property(PropertyInfo &property) const;
+	void _notification(int p_what);
+	static void _bind_methods();
+
+public:
+	void set_stream(Ref<AudioStream> p_stream);
+	Ref<AudioStream> get_stream() const;
+
+	void set_volume_db(float p_volume);
+	float get_volume_db() const;
+
+	void play(float p_from_pos = 0.0);
+	void seek(float p_seconds);
+	void stop();
+	bool is_playing() const;
+	float get_pos();
+
+	void set_bus(const StringName &p_bus);
+	StringName get_bus() const;
+
+	void set_autoplay(bool p_enable);
+	bool is_autoplay_enabled();
+
+	void set_max_distance(float p_pixels);
+	float get_max_distance() const;
+
+	void set_attenuation(float p_curve);
+	float get_attenuation() const;
+
+	void set_area_mask(uint32_t p_mask);
+	uint32_t get_area_mask() const;
+
+	AudioStreamPlayer2D();
+	~AudioStreamPlayer2D();
+};
+
+#endif
-- 
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