value is halfExtent

src/engine/Enum.java

@@ -2310,10 +2310,10 @@ public class Enum {
         ZONE(875),
         PLACEMENT(876);
 
-        public final float extents;
+        public final float halfExtents;
 
-        CityBoundsType(float extents) {
-            this.extents = extents;
+        CityBoundsType(float halfExtents) {
+            this.halfExtents = halfExtents;
         }
     }