Bunch of crew AI bugfixes/improvements:

- replacing empty oxygen tanks
- fixed characters only fixing leaks in the outer hull
- prioritizing large leaks over small ones
- fixed characters doing nothing after fixing all the leaks (and sinking to the bottom if they happen to be outside)
- more accurate welder aiming
- AIObjectiveGetItem makes the characters go to the cabinet/container an item is inside, not to the actual item (which may not be actually positioned at the container)

Subsurface/Source/Map/Gap.cs

@@ -38,6 +38,8 @@ namespace Barotrauma
 
         public Door ConnectedDoor;
 
+        public Structure ConnectedWall;
+
         public Vector2 LerpedFlowForce
         {
             get { return lerpedFlowForce; }

Subsurface/Source/Map/Structure.cs

@@ -577,8 +577,9 @@ namespace Barotrauma
                     gapRect.Width += 20;
                     gapRect.Height += 20;
                     sections[sectionIndex].gap = new Gap(gapRect, !isHorizontal, Submarine);
-                    if(CastShadow)
-                        GenerateConvexHull();
+                    sections[sectionIndex].gap.ConnectedWall = this;
+
+                    if(CastShadow) GenerateConvexHull();
                 }
             }
 
@@ -758,6 +759,7 @@ namespace Barotrauma
                 if (s.GapIndex == -1) continue;
 
                 s.gap = FindEntityByID((ushort)s.GapIndex) as Gap;
+                if (s.gap != null) s.gap.ConnectedWall = this;
             }
         }
 

Subsurface/Source/Map/WayPoint.cs

@@ -299,7 +299,7 @@ namespace Barotrauma
                 wayPoint.Remove();
             }
 
-            float minDist = 200.0f;
+            float minDist = 150.0f;
             float heightFromFloor = 100.0f;
 
             foreach (Hull hull in Hull.hullList)
@@ -324,7 +324,7 @@ namespace Barotrauma
                     prevWaypoint = wayPoint;
                 }
             }
-
+            
             float outSideWaypointInterval = 200.0f;
             int outsideWaypointDist = 100;
 
@@ -521,7 +521,7 @@ namespace Barotrauma
 
                 for (int dir = -1; dir <= 1; dir += 2)
                 {
-                    float tolerance = gap.IsRoomToRoom ? 30.0f : outSideWaypointInterval / 2.0f;
+                    float tolerance = gap.IsRoomToRoom ? 50.0f : outSideWaypointInterval / 2.0f;
                     WayPoint closest = wayPoint.FindClosest(dir, true, new Vector2(-tolerance, tolerance));
                     if (closest == null) continue;
                     wayPoint.ConnectTo(closest);