2 files changed, 220 insertions, 0 deletions
diff --git a/scene/3d/listener.cpp b/scene/3d/listener.cpp
new file mode 100644
index 0000000000..bf42a5c92e
--- /dev/null
+++ b/scene/3d/listener.cpp
@@ -0,0 +1,167 @@
+#include "listener.h"
+
+#include "scene/resources/mesh.h"
+
+void Listener::_update_audio_listener_state() {
+
+
+}
+
+void Listener::_request_listener_update() {
+
+	_update_listener();
+}
+
+bool Listener::_set(const StringName& p_name, const Variant& p_value) {
+
+	if (p_name == "current") {
+		if (p_value.operator bool()) {
+			make_current();
+		}
+		else {
+			clear_current();
+		}
+	}
+	else
+		return false;
+
+	return true;
+}
+bool Listener::_get(const StringName& p_name,Variant &r_ret) const {
+
+	if (p_name == "current") {
+		if (is_inside_tree() && get_tree()->is_node_being_edited(this)) {
+			r_ret = current;
+		}
+		else {
+			r_ret = is_current();
+		}
+	}
+	else
+		return false;
+
+	return true;
+}
+
+void Listener::_get_property_list( List<PropertyInfo> *p_list) const {
+
+	p_list->push_back( PropertyInfo( Variant::BOOL, "current" ) );
+}
+
+void Listener::_update_listener() {
+
+	if (is_inside_tree() && is_current()) {
+		get_viewport()->_listener_transform_changed_notify();
+
+	}
+}
+
+void Listener::_notification(int p_what) {
+
+	switch(p_what) {
+
+		case NOTIFICATION_ENTER_WORLD: {
+			bool first_listener = get_viewport()->_listener_add(this);
+			if (!get_tree()->is_node_being_edited(this) && (current || first_listener))
+				make_current();
+		} break;
+		case NOTIFICATION_TRANSFORM_CHANGED: {
+			_request_listener_update();
+		} break;
+		case NOTIFICATION_EXIT_WORLD: {
+
+			if (!get_tree()->is_node_being_edited(this)) {
+				if (is_current()) {
+					clear_current();
+					current=true; //keep it true
+
+				} else {
+					current=false;
+				}
+			}
+
+			get_viewport()->_listener_remove(this);
+
+
+		} break;
+
+
+	}
+
+}
+
+
+Transform Listener::get_listener_transform() const {
+
+	return get_global_transform().orthonormalized();
+}
+
+void Listener::make_current() {
+
+	current=true;
+
+	if (!is_inside_tree())
+		return;
+
+	get_viewport()->_listener_set(this);
+}
+
+
+
+
+void Listener::clear_current() {
+
+	current=false;
+	if (!is_inside_tree())
+		return;
+
+	if (get_viewport()->get_listener()==this) {
+		get_viewport()->_listener_set(NULL);
+		get_viewport()->_listener_make_next_current(this);
+	}
+
+}
+
+bool Listener::is_current() const {
+
+	if (is_inside_tree() && !get_tree()->is_node_being_edited(this)) {
+
+		return get_viewport()->get_listener()==this;
+	} else
+		return current;
+
+	return false;
+}
+
+bool Listener::_can_gizmo_scale() const {
+
+	return false;
+}
+
+RES Listener::_get_gizmo_geometry() const {
+	Ref<Mesh> mesh = memnew(Mesh);
+
+	return mesh;
+}
+
+void Listener::_bind_methods() {
+
+	ObjectTypeDB::bind_method( _MD("make_current"),&Listener::make_current );
+	ObjectTypeDB::bind_method( _MD("clear_current"),&Listener::clear_current );
+	ObjectTypeDB::bind_method( _MD("is_current"),&Listener::is_current );
+	ObjectTypeDB::bind_method( _MD("get_listener_transform"),&Listener::get_listener_transform );
+}
+
+Listener::Listener() {
+
+	current=false;
+	force_change=false;
+	//active=false;
+}
+
+
+Listener::~Listener() {
+
+}
+
+
diff --git a/scene/3d/listener.h b/scene/3d/listener.h
new file mode 100644
index 0000000000..bf0281a8e0
--- /dev/null
+++ b/scene/3d/listener.h
@@ -0,0 +1,53 @@
+#ifndef LISTENER_H
+#define LISTENER_H
+
+
+#include "scene/3d/spatial.h"
+#include "scene/main/viewport.h"
+
+class Listener : public Spatial {
+
+	OBJ_TYPE(Listener, Spatial);
+private:
+
+	bool force_change;
+	bool current;
+
+	RID scenario_id;
+
+	virtual bool _can_gizmo_scale() const;
+	virtual RES _get_gizmo_geometry() const;
+
+friend class Viewport;
+	void _update_audio_listener_state();
+protected:
+
+	void _update_listener();
+	virtual void _request_listener_update();
+
+	bool _set(const StringName& p_name, const Variant& p_value);
+	bool _get(const StringName& p_name,Variant &r_ret) const;
+	void _get_property_list( List<PropertyInfo> *p_list) const;
+	void _notification(int p_what);
+
+	static void _bind_methods();
+
+public:
+
+	void make_current();
+	void clear_current();
+	bool is_current() const;
+
+	virtual Transform get_listener_transform() const;
+
+	void set_visible_layers(uint32_t p_layers);
+	uint32_t get_visible_layers() const;
+
+	Vector<Plane> get_frustum() const;
+
+	Listener();
+	~Listener();
+
+};
+
+#endif