Dirty workaround for background music breaking during loading (the music is switched when a round starts), the "wall" at the top of the levels is drawn on top of the lightmap, small fixes in AIObjectiveGetItem and BackGroundSpriteManager

Subsurface/Source/Characters/AI/Objectives/AIObjectiveGetItem.cs

@@ -58,6 +58,8 @@ namespace Barotrauma
                 if (targetItem == null) return;
             }
 
+            if (moveToTarget == null) return;
+
             if (Vector2.Distance(character.Position, moveToTarget.Position) < targetItem.PickDistance*2.0f)
             {
                 int targetSlot = -1;

Subsurface/Source/Characters/BackgroundSprite/BackgroundSpriteManager.cs

@@ -92,7 +92,7 @@ namespace Barotrauma
                 int x = (int)Math.Floor(((Vector2)pos).X / GridSize);
                 if (x<0 || x >= sprites.GetLength(0)) continue;
                 int y = (int)Math.Floor(((Vector2)pos).Y / GridSize);
-                if (y<0 || 1 >= sprites.GetLength(1)) continue;
+                if (y<0 || y >= sprites.GetLength(1)) continue;
 
                 sprites[x,y].Add(newSprite);
             }