bonus code cleanup

src/engine/objects/Zone.java

@@ -9,17 +9,19 @@
 
 package engine.objects;
 
+import java.awt.geom.Area;
 import engine.Enum;
 import engine.InterestManagement.Terrain;
 import engine.db.archive.DataWarehouse;
 import engine.gameManager.ZoneManager;
 import engine.math.Bounds;
 import engine.math.Vector2f;
+import engine.math.Vector3f;
 import engine.math.Vector3fImmutable;
 import engine.net.ByteBufferWriter;
 import engine.server.MBServerStatics;
 import org.pmw.tinylog.Logger;
-
+import java.awt.*;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.ArrayList;
@@ -65,6 +67,8 @@ public class Zone extends AbstractWorldObject {
 
     public Terrain terrain = null;
 
+    public Area navMesh;
+
     /**
      * ResultSet Constructor
      */
@@ -181,8 +185,27 @@ public class Zone extends AbstractWorldObject {
 
         ZoneManager.populateZoneCollections(this);
 
+        this.bakeNavMesh();
+
     }
 
+    public void bakeNavMesh(){
+        int xPoint = (int)(this.loc.x - this.bounds.getHalfExtents().x);
+        int zPoint = (int) (this.loc.z - this.bounds.getHalfExtents().y);
+        int extentsX = (int) (this.bounds.getHalfExtents().x * 2);
+        int extentsZ = (int) (this.bounds.getHalfExtents().y * 2);
+
+        this.navMesh = new Area(new Rectangle(xPoint, zPoint, extentsX, extentsZ));
+
+        for(Building building : this.zoneBuildingSet){
+            for(Regions region : building.getBounds().getRegions())
+                this.navMesh.add(region.getArea());
+
+            MeshBounds meshBounds = Bounds.meshBoundsCache.get(building.getMeshUUID());
+            if(meshBounds != null)
+                this.navMesh.subtract(meshBounds.getArea());
+        }
+    }
     /* Method sets a default value for player cities
      * otherwise using values derived from the loadnum
      * field in the obj_zone database table.