Lots of work on Audio & Physics engine:

-Added new 3D stream player node
-Added ability for Area to capture sound from streams
-Added small features in physics to be able to properly guess distance to areas for sound
-Fixed 3D CollisionObject so shapes are added the same as in 2D, directly from children
-Fixed KinematicBody API to make it the same as 2D.

2 files changed, 16 insertions, 0 deletions

diff --git a/core/math/audio_frame.h b/core/math/audio_frame.h
index 5ccc9d9e5e..d54f622197 100644
--- a/core/math/audio_frame.h
+++ b/core/math/audio_frame.h
@@ -102,6 +102,16 @@ struct AudioFrame {
 		r = ::undenormalise(r);
 	}
 
+	_FORCE_INLINE_ AudioFrame linear_interpolate(const AudioFrame &p_b, float p_t) const {
+
+		AudioFrame res = *this;
+
+		res.l += (p_t * (p_b.l - l));
+		res.r += (p_t * (p_b.r - r));
+
+		return res;
+	}
+
 	_ALWAYS_INLINE_ AudioFrame(float p_l, float p_r) {
 		l = p_l;
 		r = p_r;
diff --git a/core/math/vector3.h b/core/math/vector3.h
index 7dfcedd0da..6a7974681e 100644
--- a/core/math/vector3.h
+++ b/core/math/vector3.h
@@ -100,6 +100,7 @@ struct Vector3 {
 
 	_FORCE_INLINE_ Vector3 abs() const;
 	_FORCE_INLINE_ Vector3 floor() const;
+	_FORCE_INLINE_ Vector3 sign() const;
 	_FORCE_INLINE_ Vector3 ceil() const;
 
 	_FORCE_INLINE_ real_t distance_to(const Vector3 &p_b) const;
@@ -187,6 +188,11 @@ Vector3 Vector3::abs() const {
 	return Vector3(Math::abs(x), Math::abs(y), Math::abs(z));
 }
 
+Vector3 Vector3::sign() const {
+
+	return Vector3(SGN(x), SGN(y), SGN(z));
+}
+
 Vector3 Vector3::floor() const {
 
 	return Vector3(Math::floor(x), Math::floor(y), Math::floor(z));