diff --git a/source/common/utility/vectors.h b/source/common/utility/vectors.h
index 073c946c7..65448c2c2 100644
--- a/source/common/utility/vectors.h
+++ b/source/common/utility/vectors.h
@@ -665,6 +665,7 @@ struct TVector3
 template<class vec_t>
 struct TVector4
 {
+	typedef TVector2<vec_t> Vector2;
 	typedef TVector3<vec_t> Vector3;
 
 	vec_t X, Y, Z, W;
@@ -723,6 +724,29 @@ struct TVector4
 		return X != other.X || Y != other.Y || Z != other.Z || W != other.W;
 	}
 
+	// returns the XY fields as a 2D-vector.
+	const Vector2& XY() const
+	{
+		return *reinterpret_cast<const Vector2*>(this);
+	}
+
+	Vector2& XY()
+	{
+		return *reinterpret_cast<Vector2*>(this);
+	}
+
+	// returns the XY fields as a 2D-vector.
+	const Vector3& XYZ() const
+	{
+		return *reinterpret_cast<const Vector3*>(this);
+	}
+
+	Vector3& XYZ()
+	{
+		return *reinterpret_cast<Vector3*>(this);
+	}
+
+
 	// Test for approximate equality
 	bool ApproximatelyEquals(const TVector4 &other) const
 	{
@@ -838,12 +862,6 @@ struct TVector4
 		return *this;
 	}
 
-	// returns the XYZ fields as a 3D-vector.
-	Vector3 XYZ() const
-	{
-		return{ X, Y, Z };
-	}
-
 	// Add a 4D vector and a 3D vector.
 	friend TVector4 operator+ (const TVector4 &v4, const Vector3 &v3)
 	{
diff --git a/source/core/coreactor.h b/source/core/coreactor.h
index 1eba52cb6..3cfd61590 100644
--- a/source/core/coreactor.h
+++ b/source/core/coreactor.h
@@ -240,6 +240,16 @@ public:
 		__int_vel = x;
 	}
 
+	void set_float_bvel(DVector3 x)
+	{
+		__int_vel = { FloatToFixed(x.X), FloatToFixed(x.Y), FloatToFixed(x.Z) };
+	}
+
+	void set_float_bvel_xy(DVector2 x)
+	{
+		__int_vel.XY() = { FloatToFixed(x.X), FloatToFixed(x.Y) };
+	}
+
 	void add_int_bvel_x(int x)
 	{
 		__int_vel .X += x;