diff --git a/game-service/src/main/java/org/libertybikes/game/core/MovingObstacle.java b/game-service/src/main/java/org/libertybikes/game/core/MovingObstacle.java
index e4c00eb..472727d 100644
--- a/game-service/src/main/java/org/libertybikes/game/core/MovingObstacle.java
+++ b/game-service/src/main/java/org/libertybikes/game/core/MovingObstacle.java
@@ -1,12 +1,8 @@
-/**
- *
- */
 package org.libertybikes.game.core;
 
 public class MovingObstacle extends Obstacle {
 
-    public int xDir, yDir, oldX, oldY, moveDelay, currentDelay = 0;
-    public boolean hasMoved = false;
+    private int xDir, yDir, moveDelay, currentDelay = 0;
 
     public MovingObstacle(int w, int h, int x, int y) {
         super(w, h, x, y);
@@ -62,14 +58,10 @@ public class MovingObstacle extends Obstacle {
 
         if (++currentDelay < moveDelay) {
             // don't move yet
-            hasMoved = false;
             return;
         }
 
-        hasMoved = true;
         currentDelay = 0;
-        oldX = x;
-        oldY = y;
 
         for (int i = 0; i < width; i++) {
             for (int j = 0; j < height; j++) {
diff --git a/game-service/src/test/java/org/libertybikes/game/core/JsonDataTest.java b/game-service/src/test/java/org/libertybikes/game/core/JsonDataTest.java
index 2cce74e..4349e9d 100644
--- a/game-service/src/test/java/org/libertybikes/game/core/JsonDataTest.java
+++ b/game-service/src/test/java/org/libertybikes/game/core/JsonDataTest.java
@@ -1,6 +1,3 @@
-/**
- *
- */
 package org.libertybikes.game.core;
 
 import static org.junit.Assert.assertEquals;
@@ -74,7 +71,7 @@ public class JsonDataTest {
                      jsonb.toJson(board));
 
         board.addObstacle(new MovingObstacle(11, 12, 13, 14, -1, 2, 50));
-        assertEquals("{\"movingObstacles\":[{\"height\":12,\"width\":11,\"x\":13,\"y\":14,\"currentDelay\":0,\"hasMoved\":false,\"moveDelay\":50,\"oldX\":0,\"oldY\":0,\"xDir\":-1,\"yDir\":2}],\"obstacles\":["
+        assertEquals("{\"movingObstacles\":[{\"height\":12,\"width\":11,\"x\":13,\"y\":14}],\"obstacles\":["
                      + obstacleJson + "],\"players\":[" + bobJson + "]}",
                      jsonb.toJson(board));
     }