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/Lights/ConvexHull.cs

@@ -353,7 +353,7 @@ namespace Barotrauma.Lights
                 else
                 {                    
                     shadowEffect.CurrentTechnique.Passes[0].Apply();
-                    graphicsDevice.DrawPrimitives(PrimitiveType.TriangleStrip, 0, shadowVertexCount*2 - 2);
+                    graphicsDevice.DrawPrimitives(PrimitiveType.TriangleStrip, 0, shadowVertexCount * 2 - 2);
                 }               
             
             }

Subsurface/Source/Map/MapEntity.cs

@@ -222,6 +222,7 @@ namespace Barotrauma
             }
 
             Item.Spawner.Update();
+            Item.Remover.Update();
         }
 
         public virtual void Update(Camera cam, float deltaTime) { }

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;

Subsurface/Source/Map/StructurePrefab.cs

@@ -138,17 +138,20 @@ namespace Barotrauma
 
                 newRect = Submarine.AbsRect(placePosition, placeSize);
 
-                //newRect.Width = (int)Math.Max(newRect.Width, Map.gridSize.X);
-                //newRect.Height = (int)Math.Max(newRect.Height, Map.gridSize.Y);
-
                 if (PlayerInput.GetMouseState.LeftButton == ButtonState.Released)
                 {
-                    new Structure(newRect, this, Submarine.Loaded);
+                    if (Submarine.Loaded != null)
+                    {
+                        newRect.Location -= Submarine.Loaded.Position.ToPoint();
+                    }
+
+                    var structure = new Structure(newRect, this, Submarine.Loaded);
+
+                    structure.Submarine = Submarine.Loaded;
+
                     selected = null;
                     return;
                 }
-
-                //position = placePosition;                
             }
 
             sprite.DrawTiled(spriteBatch, new Vector2(newRect.X, -newRect.Y), new Vector2(newRect.Width, newRect.Height), Color.White);