-Added method of verifiying if a NeighborBuilding was created during the current turn.

NeighborBuildings should only be used during the current turn.  References to them that are used later will not function.

Signed-off-by: Tony Grosinger <tony@grosinger.net>

src/net/grosinger/nomads/NeighborBuilding.java

@@ -1,6 +1,5 @@
 package net.grosinger.nomads;
 
-
 /**
  * An array of NeigborBuildings will be given to a drone that is searching for
  * the buildings it is near. This is typically done from the town center.
@@ -8,6 +7,7 @@ package net.grosinger.nomads;
 public class NeighborBuilding implements GameObject {
 
 	private String name;
+	private int turnCreated;
 	private int x;
 	private int y;
 	private Building building;
@@ -27,6 +27,7 @@ public class NeighborBuilding implements GameObject {
 		this.y = y;
 		this.name = name;
 		this.building = building;
+		turnCreated = Nomads.turn;
 	}
 
 	@Override
@@ -67,4 +68,15 @@ public class NeighborBuilding implements GameObject {
 		name = newName;
 	}
 
+	/**
+	 * Checks to make sure the object was created this turn. Otherwise drones
+	 * could save a reference to the object and use it from anywhere on the map.
+	 * 
+	 * @return <code>boolean</code>
+	 */
+	protected boolean verifyObjectValidity() {
+		int currentTurn = Nomads.turn;
+		return currentTurn == turnCreated;
+	}
+
 }

src/net/grosinger/nomads/TownHall.java

@@ -2,16 +2,24 @@ package net.grosinger.nomads;
 
 import java.util.ArrayList;
 
-
 /**
  * A representation of a TownHall. Allows Drones to interact with this building.
  */
 public class TownHall extends NeighborBuilding {
 
+	// TODO - Rewrite class to make more accessible to Drones
+
 	public TownHall(int x, int y, String name, Building building) {
 		super(x, y, name, building);
 	}
 
+	/**
+	 * Will sell all items in inventory that are able to be sold to the Town
+	 * Hall.
+	 * 
+	 * @param inventory
+	 * @param team
+	 */
 	public void cashInventory(ArrayList<GameObject> inventory, DroneTeam team) {
 		while (!inventory.isEmpty()) {
 			GameObject currentObject = inventory.get(0);
@@ -26,7 +34,19 @@ public class TownHall extends NeighborBuilding {
 		}
 	}
 
+	/**
+	 * Will generate a new objective for the drone that requests it.
+	 * 
+	 * @param UID
+	 *            Depreciated and going away soon.
+	 * @return <code>Point</code> Will return null if the NeighborBuilding was
+	 *         created in a previous turn.
+	 */
 	public Point requestNewObjective(String UID) {
+		if (verifyObjectValidity()) {
 			return Nomads.awesomeWorld.generateObjective(UID);
+		} else {
+			return null;
+		}
 	}
 }