property conforms to JSON

src/engine/InterestManagement/Terrain.java

@@ -35,15 +35,15 @@ public class Terrain {
         this.zone = zone;
         this.heightmap = this.zone.terrain_image;
 
-        // Configure PLANAR zones to use the same
-        // 16x16 pixel image that all other flat
-        // terrains share.
+        // Configure PLANAR zones to use the same 16x16 pixel image
+        // that all similar terrains share.  (See JSON)  Guild zones
+        // use an inverted clone of this heightmap.
 
         if (this.zone.terrain_type.equals("PLANAR"))
             if (this.zone.guild_zone)
-                this.heightmap = 1006301;
+                this.heightmap = 1006301;  // all 255
             else
-                this.heightmap = 1006300;
+                this.heightmap = 1006300;  // all 0
 
         // Load pixel data for this terrain from cache
 
@@ -110,7 +110,7 @@ public class Terrain {
         // Interpolate height for this position in terrain
 
         float interpolatedChildHeight = terrainZone.terrain.getInterpolatedTerrainHeight(terrainLoc);
-        interpolatedChildHeight += terrainZone.worldAltitude;
+        interpolatedChildHeight += terrainZone.global_height;
 
         return interpolatedChildHeight;
     }