preserve old canSendMessage so examplefuncsplayer still works

engine/src/main/battlecode/common/RobotController.java

@@ -749,6 +749,20 @@ public interface RobotController {
      */
     boolean canSendMessage(MapLocation loc);
 
+    /**
+     * Returns true if the unit can send a message to a specific
+     * location, false otherwise. We can send a message to a location
+     * if it is within a specific distance and connected by paint,
+     * and only if one unit is a robot and the other is a tower.
+     * 
+     * @param loc the location to send the message to
+     * @param messageContent the contents of the message.
+     * Does not affect whether or not the message can be sent.
+     * 
+     * @battlecode.doc.costlymethod
+     */
+    boolean canSendMessage(MapLocation loc, int messageContent);
+
     /**
      * Sends a message (contained in an int, so 4 bytes) to a specific
      * unit at a location on the map, if it is possible

engine/src/main/battlecode/world/RobotControllerImpl.java

@@ -968,13 +968,17 @@ private void assertCanSendMessage(MapLocation loc, Message message) throws GameA
 
     @Override
     public boolean canSendMessage(MapLocation loc) {
+        // use dummy message content as does not affect if message can be sent
+        return canSendMessage(loc, 0);
+    }
+
+    @Override
+    public boolean canSendMessage(MapLocation loc, int messageContent) {
         try {
-            // use dummy message content as does not affect if message can be sent
-            Message message = new Message(0, this.robot.getID(), this.gameWorld.getCurrentRound());
+            Message message = new Message(messageContent, this.robot.getID(), this.gameWorld.getCurrentRound());
             assertCanSendMessage(loc, message);
             return true;
         } catch (GameActionException e) {
-            //System.out.println(e);
             return false;
         }
     }