Class cleanup and comments

src/engine/InterestManagement/Terrain.java

@@ -145,7 +145,7 @@ public class Terrain {
             Vector2f terrain_cell = getTerrainCell(terrainLoc);
 
             int pixel_x = (int) Math.floor(terrain_cell.x);
-            int pixel_t = (int) Math.floor(terrain_cell.y);
+            int pixel_y = (int) Math.floor(terrain_cell.y);
 
             Vector2f pixel_offset = new Vector2f(terrain_cell.x % 1, terrain_cell.y % 1);
 
@@ -156,10 +156,10 @@ public class Terrain {
             float bottomLeftHeight;
             float bottomRightHeight;
 
-            topLeftHeight = terrain_pixel_data[pixel_x][pixel_t];
-            topRightHeight = terrain_pixel_data[pixel_x + 1][pixel_t];
-            bottomLeftHeight = terrain_pixel_data[pixel_x][pixel_t + 1];
-            bottomRightHeight = terrain_pixel_data[pixel_x + 1][pixel_t + 1];
+            topLeftHeight = terrain_pixel_data[pixel_x][pixel_y];
+            topRightHeight = terrain_pixel_data[pixel_x + 1][pixel_y];
+            bottomLeftHeight = terrain_pixel_data[pixel_x][pixel_y + 1];
+            bottomRightHeight = terrain_pixel_data[pixel_x + 1][pixel_y + 1];
 
             // Interpolate between the 4 vertices