added astar to smoothing transition

code/MyGridNode.h

@@ -21,6 +21,7 @@ struct MyGridNode : public GridNode, public GridPoint {
 public:
 
 	/** needed ctor */
+    MyGridNode() : GridNode(), GridPoint() {;}
 	MyGridNode(const float x_cm, const float y_cm, const float z_cm) : GridPoint(x_cm, y_cm, z_cm) {;}
 
 };