Fixed AIObjectiveGoto terminating if previous path was unreachable, BackGroundSpriteManager won't place a sprite if a suitable position isn't found, StatusEffect fire position fix, UI improvements, door convexhull fix, progress on Fabricators & Deconstructors, mapentities sorted by category in edit mode, item descriptions, TutorialMode refactoring to make it easier to add new types of tutorials

Subsurface/Source/Map/MapEntityPrefab.cs

@@ -7,6 +7,11 @@ using Microsoft.Xna.Framework.Input;
 
 namespace Barotrauma
 {
+    enum MapEntityCategory
+    {
+        Structure, Machine, Item, Electrical, Equipment, Material
+    }
+
     class MapEntityPrefab
     {
         public static List<MapEntityPrefab> list = new List<MapEntityPrefab>();
@@ -57,6 +62,12 @@ namespace Barotrauma
             get { return resizeVertical; }
         }
 
+        public MapEntityCategory Category
+        {
+            get;
+            protected set;
+        }
+
         public Color SpriteColor
         {
             get;