Moved awareness code into a new class 'ObjectAwareness'

src/services/objects/ObjectAwareness.java

@@ -0,0 +1,94 @@
+package services.objects;
+
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import resources.Location;
+import resources.Terrain;
+import resources.objects.SWGObject;
+import resources.objects.creature.CreatureObject;
+import resources.objects.quadtree.QuadTree;
+
+public class ObjectAwareness {
+	
+	private static final double AWARE_RANGE = 200;
+	
+	private final Map <Terrain, QuadTree <SWGObject>> quadTree;
+	
+	public ObjectAwareness() {
+		quadTree = new HashMap<Terrain, QuadTree<SWGObject>>();
+	}
+	
+	public boolean initialize() {
+		loadQuadTree();
+		return true;
+	}
+	
+	private void loadQuadTree() {
+		for (Terrain t : Terrain.values()) {
+			quadTree.put(t, new QuadTree<SWGObject>(-8192, -8192, 8192, 8192));
+		}
+	}
+	
+	public void add(SWGObject object) {
+		update(object);
+		Location l = object.getLocation();
+		if (invalidLocation(l))
+			return;
+		QuadTree <SWGObject> tree = getTree(l);
+		synchronized (tree) {
+			tree.put(l.getX(), l.getZ(), object);
+		}
+	}
+	
+	public void remove(SWGObject object) {
+		Location l = object.getLocation();
+		if (invalidLocation(l))
+			return;
+		QuadTree <SWGObject> tree = getTree(l);
+		synchronized (tree) {
+			tree.remove(l.getX(), l.getZ(), object);
+		}
+	}
+	
+	public void move(SWGObject object, Location nLocation) {
+		remove(object);
+		object.setLocation(nLocation);
+		add(object);
+	}
+	
+	public void update(SWGObject obj) {
+		Location l = obj.getLocation();
+		if (invalidLocation(l))
+			return;
+		List <SWGObject> objectAware = new LinkedList<SWGObject>();
+		QuadTree <SWGObject> tree = getTree(l);
+		synchronized (tree) {
+			List <SWGObject> range = tree.getWithinRange(l.getX(), l.getZ(), AWARE_RANGE);
+			for (SWGObject inRange : range) {
+				if (isValidInRange(obj, inRange))
+					objectAware.add(inRange);
+			}
+		}
+		obj.updateObjectAwareness(objectAware);
+	}
+	
+	private QuadTree <SWGObject> getTree(Location l) {
+		return quadTree.get(l.getTerrain());
+	}
+	
+	private boolean invalidLocation(Location l) {
+		return l == null || l.getTerrain() == null;
+	}
+	
+	private boolean isValidInRange(SWGObject obj, SWGObject inRange) {
+		if (inRange.getObjectId() == obj.getObjectId())
+			return false;
+		if (inRange instanceof CreatureObject && inRange.getOwner() == null)
+			return false;
+		return true;
+	}
+	
+}