Fix deconstructing walls creating an atmos void.

This caused a lot of high pressure movements.

Content.Server/Atmos/IGridAtmosphereComponent.cs

@@ -40,6 +40,11 @@ namespace Content.Server.Atmos
         /// <param name="indices"></param>
         void Invalidate(MapIndices indices);
 
+        /// <summary>
+        ///     Attempts to fix a sudden vacuum by creating gas.
+        /// </summary>
+        void FixVacuum(MapIndices indices);
+
         /// <summary>
         ///     Adds an active tile so it becomes processed every update until it becomes inactive.
         ///     Also makes the tile excited.

Content.Server/Atmos/TileAtmosphere.cs

@@ -78,7 +78,6 @@ namespace Content.Server.Atmos
         [ViewVariables]
         public Hotspot Hotspot;
 
-        [ViewVariables]
         private Direction _pressureDirection;
 
         [ViewVariables]

Content.Server/GameObjects/Components/Atmos/AirtightComponent.cs

@@ -40,7 +40,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             base.ExposeData(serializer);
 
             serializer.DataField(ref _airBlocked, "airBlocked", true);
-            serializer.DataField(ref _fixVacuum, "fixVacuum", false);
+            serializer.DataField(ref _fixVacuum, "fixVacuum", true);
         }
 
         public override void Initialize()
@@ -57,15 +57,6 @@ namespace Content.Server.GameObjects.Components.Atmos
             UpdatePosition();
         }
 
-        public override void OnRemove()
-        {
-            base.OnRemove();
-
-            _airBlocked = false;
-
-            UpdatePosition();
-        }
-
         public void MapInit()
         {
             _snapGrid.OnPositionChanged += OnTransformMove;
@@ -80,6 +71,11 @@ namespace Content.Server.GameObjects.Components.Atmos
             _airBlocked = false;
 
             _snapGrid.OnPositionChanged -= OnTransformMove;
+
+            if(_fixVacuum)
+                EntitySystem.Get<AtmosphereSystem>().GetGridAtmosphere(Owner.Transform.GridID)?
+                    .FixVacuum(_snapGrid.Position);
+
             UpdatePosition();
         }
 

Content.Server/GameObjects/Components/Atmos/GridAtmosphereComponent.cs

@@ -175,18 +175,7 @@ namespace Content.Server.GameObjects.Components.Atmos
                     {
                         if (tile.Air == null && obs.FixVacuum)
                         {
-                            var adjacent = GetAdjacentTiles(indices);
+                            FixVacuum(tile.GridIndices);
-                            tile.Air = new GasMixture(GetVolumeForCells(1)){Temperature = Atmospherics.T20C};
-                            _tiles[indices] = tile;
-
-                            var ratio = 1f / adjacent.Count;
-
-                            foreach (var (direction, adj) in adjacent)
-                            {
-                                var mix = adj.Air.RemoveRatio(ratio);
-                                tile.Air.Merge(mix);
-                                adj.Air.Merge(mix);
-                            }
                         }
                     }
 
@@ -208,6 +197,25 @@ namespace Content.Server.GameObjects.Components.Atmos
             _invalidatedCoords.Clear();
         }
 
+        /// <inheritdoc />
+        public void FixVacuum(MapIndices indices)
+        {
+            var tile = GetTile(indices);
+            if (tile?.GridIndex != _grid.Index) return;
+            var adjacent = GetAdjacentTiles(indices);
+            tile.Air = new GasMixture(GetVolumeForCells(1)){Temperature = Atmospherics.T20C};
+            _tiles[indices] = tile;
+
+            var ratio = 1f / adjacent.Count;
+
+            foreach (var (direction, adj) in adjacent)
+            {
+                var mix = adj.Air.RemoveRatio(ratio);
+                tile.Air.Merge(mix);
+                adj.Air.Merge(mix);
+            }
+        }
+
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public void AddActiveTile(TileAtmosphere tile)