Preparation for blend lerp insertion.

src/engine/InterestManagement/HeightMap.java

@@ -209,7 +209,9 @@ public class HeightMap {
     public static float getWorldHeight(Zone currentZone, Vector3fImmutable worldLoc) {
 
         Zone heightMapZone;
+        Zone parentZone;
         float worldHeight;
+        float parentHeight;
 
         //  Seafloor is rather flat.
 
@@ -237,6 +239,11 @@ public class HeightMap {
             return worldHeight;
         }
 
+        // We will need the parent height if we got this far into the method
+
+        parentZone = HeightMap.getNextZoneWithTerrain(heightMapZone.getParent());
+        parentHeight = HeightMap.getWorldHeight(parentZone, worldLoc);
+
         if (Bounds.collide(worldLoc, heightMapZone.minBlend) == true) {
 
             // How far into blend zone are we?
@@ -246,6 +253,7 @@ public class HeightMap {
             zoneLoc.y = abs(zoneLoc.x);
             blendBounds.setBounds(new Vector2f(heightMapZone.absX, heightMapZone.absZ), zoneLoc, 0.0f);
 
+
         }
 
         // Position returned from Heightmap engine is relative to zone world height