add function computeCost file layer.h

include/robot_costmap_2d/inflation_layer.h

@@ -96,8 +96,9 @@ public:
   /** @brief  Given a distance, compute a cost.
    * @param  distance The distance from an obstacle in cells
    * @return A cost value for the distance */
-  virtual inline unsigned char computeCost(double distance) const
+  virtual unsigned char computeCost(double distance) const override
   {
+    // robot::log_warning("InflationLayer::computeCost() is deprecated. Please use costLookup() instead.");
     unsigned char cost = 0;
     if (distance == 0)
       cost = LETHAL_OBSTACLE;