-Begin writing Move method for Police

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

src/net/grosinger/nomads/drones/Police.java

@@ -1,6 +1,7 @@
 package net.grosinger.nomads.drones;
 
 import net.grosinger.nomads.DroneTools;
+import net.grosinger.nomads.Point;
 import net.grosinger.nomads.drones.DroneListItem.EnumMove;
 
 /**
@@ -19,13 +20,20 @@ public class Police implements Drone {
 
 	private static final boolean DEBUGGINGALL = true;
 
-	// Do not change these
+	// Do not change these //
 	private String name;
 	private String UID;
 
-	// Define any variables that you need
+	// Define any variables that you need //
 	private DroneTools tools;
 
+	// Moving Related
+	private EnumMove previousDirection;
+	private int movesLeftInThisDirection;
+	private static Point backupRequestedHere;
+
+	private Point iAmGoingToGiveBackup;
+
 	// Leave these methods alone, they are required //
 
 	@Override
@@ -60,6 +68,32 @@ public class Police implements Drone {
 		if (DEBUGGINGALL) {
 			System.out.println("Policeman about to move");
 		}
+
+		if (iAmGoingToGiveBackup != null) {
+			// If I am not at this point already, go there
+
+			// If I am at that point, unset the variable and start looking for
+			// people
+		} else if (backupRequestedHere != null) {
+			// Another policeman needs backup, go there
+			EnumMove returnThis = goToPoint(backupRequestedHere);
+
+			// Remove the request for backup
+			backupRequestedHere = null;
+			return returnThis;
+		} else if (movesLeftInThisDirection == 0) {
+			// If I am not going anywhere specific, just pick a random
+			// direction, travel that way for 3 moves, then repeat
+			movesLeftInThisDirection = 2;
+			previousDirection = pickRandomDirection();
+			return previousDirection;
+		} else if (movesLeftInThisDirection > 0) {
+			// If I am not going anywhere specific, just pick a random
+			// direction, travel that way for 3 moves, then repeat
+			movesLeftInThisDirection--;
+			return previousDirection;
+		}
+
 		// A police drone will move semi-randomly, looking for neighbors.
 		// Upon finding neighbors it will scan them to see if any of them are
 		// wanted. If one is wanted it will start to pursue them and attempt to
@@ -83,7 +117,58 @@ public class Police implements Drone {
 		return null;
 	}
 
-	public void requestBackup() {
+	public void requestBackup(Point goHere) {
+		backupRequestedHere = goHere;
+	}
 
+	/**
+	 * Chooses a random direction to travel from North, South, East, and West
+	 * 
+	 * @return <code>EnumMove</code>
+	 */
+	private EnumMove pickRandomDirection() {
+		// TODO - Implement pickRandomDirection
+		return EnumMove.South;
+	}
+
+	/**
+	 * Will travel East/West then North/South to get to the point provided
+	 * 
+	 * @param goHere
+	 *            <code>Point</code> that is to be traveled to
+	 * @return <code>EnumMove</code> that is to be given to move method
+	 */
+	private EnumMove goToPoint(Point goHere) {
+		int amountN = tools.getY() - goHere.getY();
+		int amountE = tools.getX() - goHere.getX();
+
+		if (DEBUGGINGALL) {
+			System.out.println("Amount East: " + amountE + " Amount North: " + amountN);
+		}
+
+		// TODO - Find out why this isn't working
+		if (amountE > 0 && tools.canMoveWest()) {
+			if (DEBUGGINGALL) {
+				System.out.println("TonysDrone moving West");
+			}
+			return EnumMove.West;
+		} else if (amountE < 0 && tools.canMoveEast()) {
+			if (DEBUGGINGALL) {
+				System.out.println("TonysDrone moving East");
+			}
+			return EnumMove.East;
+		} else if (amountN > 0 && tools.canMoveNorth()) {
+			if (DEBUGGINGALL) {
+				System.out.println("TonysDrone moving North");
+			}
+			return EnumMove.North;
+		} else if (amountN < 0 && tools.canMoveSouth()) {
+			if (DEBUGGINGALL) {
+				System.out.println("TonysDrone moving South");
+			}
+			return EnumMove.South;
+		} else {
+			return EnumMove.NoMove;
+		}
 	}
 }