diff --git a/panda/src/physics/linearForce.I b/panda/src/physics/linearForce.I
index 946bfa1ade..7e4a552451 100644
--- a/panda/src/physics/linearForce.I
+++ b/panda/src/physics/linearForce.I
@@ -62,3 +62,12 @@ set_vector_masks(bool x, bool y, bool z) {
   _y_mask = y;
   _z_mask = z;
 }
+
+////////////////////////////////////////////////////////////////////
+//    Function : set_vector_masks
+//      Access : Public
+////////////////////////////////////////////////////////////////////
+INLINE LVector3f LinearForce::
+get_vector_masks() {
+  return LVector3f(_x_mask, _y_mask, _z_mask);
+}
diff --git a/panda/src/physics/linearForce.h b/panda/src/physics/linearForce.h
index cad6b86f17..ee091e1510 100644
--- a/panda/src/physics/linearForce.h
+++ b/panda/src/physics/linearForce.h
@@ -37,6 +37,7 @@ PUBLISHED:
   INLINE bool get_mass_dependent() const;
 
   INLINE void set_vector_masks(bool x, bool y, bool z);
+  INLINE LVector3f get_vector_masks();
 
   LVector3f get_vector(const PhysicsObject *po);