fix equip transform containing parent

src/main/java/electrosphere/entity/state/equip/ServerEquipState.java

@@ -95,6 +95,12 @@ public class ServerEquipState implements BehaviorTree {
         String equipItemClass = ItemUtils.getEquipClass(inInventoryEntity);
         List<String> pointEquipClassList = point.getEquipClassWhitelist();
         boolean itemIsInPointWhitelist = pointEquipClassList.contains(equipItemClass);
+        if(inInventoryEntity == null){
+            throw new Error("In inventory entity is null!");
+        }
+        if(ItemUtils.getContainingParent(inInventoryEntity) == null){
+            throw new Error("Containing parent is null!");
+        }
         if(!hasEquipped && targetIsItem && itemIsInPointWhitelist){
             //hydrate inventory item
             String itemType = ItemUtils.getType(inInventoryEntity);

src/main/java/electrosphere/entity/state/inventory/ServerInventoryState.java

@@ -398,6 +398,10 @@ public class ServerInventoryState implements BehaviorTree {
             ServerInventoryState.serverRemoveItemFromInventories(existingContainer,itemEnt);
         }
 
+        //set containing parent
+        ItemUtils.setContainingParent(itemEnt, container);
+
+        //apply transforms
         if(containerType == InventoryProtocol.INVENTORY_TYPE_EQUIP){
             ServerEquipState equipState = ServerEquipState.getEquipState(container);
             EquipPoint point = equipState.getEquipPoint(slotId);

src/test/java/electrosphere/test/testutils/EngineInit.java

@@ -11,9 +11,14 @@ import electrosphere.engine.loadingthreads.LoadingThread.LoadingThreadType;
 import electrosphere.engine.profiler.Profiler;
 import electrosphere.net.NetUtils;
 
+/**
+ * Engine initialization utils for testing
+ */
 public class EngineInit {
 
-    //The maximum number of frames to wait before failing the startup routine
+    /**
+     * The maximum number of frames to wait before failing the startup routine
+     */
     public static final int MAX_FRAMES_TO_WAIT = 100;
 
     /**