Unnecessary initialization.

src/engine/InterestManagement/HeightMap.java

@@ -417,10 +417,10 @@ public class HeightMap {
 
         //get height of the 4 vertices.
 
-        float topLeftHeight = 0;
+        float topLeftHeight;
-        float topRightHeight = 0;
+        float topRightHeight;
-        float bottomLeftHeight = 0;
+        float bottomLeftHeight;
-        float bottomRightHeight = 0;
+        float bottomRightHeight;
 
         int nextY = gridY + 1;
         int nextX = gridX + 1;