Got the boat's to track and center correctly.

As well as allowing selecting different boats to track them, doesn't work as intuitively as I would like but will need to sort out a boat selection feature first made specifically for the selection of only one boat.

 #story[1121]

src/main/java/seng302/visualiser/fxObjects/BoatObject.java

@@ -40,7 +40,8 @@ public class BoatObject extends Group {
     private double distanceTravelled, lastRotation;
     private Point2D lastPoint;
     private Paint colour = Color.BLACK;
-    private Boolean isSelected, destinationSet;  //All boats are initialised as selected
+    private Boolean isSelected = false, destinationSet;  //All boats are initialised as selected
+    private Boolean isBeingTracked = false;
     private boolean isPlayer = false;
 
     /**
@@ -287,6 +288,7 @@ public class BoatObject extends Group {
 
     public void setIsSelected(Boolean isSelected) {
         this.isSelected = isSelected;
+        this.isBeingTracked = isSelected;
         setLineGroupVisible(isSelected);
         setWakeVisible(isSelected);
         setLayLinesVisible(isSelected);
@@ -364,6 +366,14 @@ public class BoatObject extends Group {
         lastHeading = heading;
     }
 
+    public Boolean getBeingTracked() {
+        return isBeingTracked;
+    }
+
+    public Boolean getSelected() {
+        return isSelected;
+    }
+
     public void setTrajectory(double heading, double velocity, double scaleFactorX, double scaleFactorY) {
 //        wake.setRotation(lastHeading - heading, velocity);
 //        rotateTo(heading);