Update to blend logic.

src/engine/InterestManagement/HeightMap.java

@@ -229,12 +229,11 @@ public class HeightMap {
         // Interpolate height for this position using pixel array.
 
         float interpolatedTerrainHeight = heightMapZone.getHeightMap().getInterpolatedTerrainHeight(zoneLoc);
-        worldHeight = interpolatedTerrainHeight + heightMapZone.worldAltitude;
 
         // Heightmap blending is based on distance to edge of zone.
 
         if (Bounds.collide(worldLoc, heightMapZone.maxBlend) == true)
-            return worldHeight;
+            return interpolatedTerrainHeight + heightMapZone.worldAltitude;
 
         // We will need the parent height if we got this far into the method