Makes atmos superconduction a CVar, disables it by default.

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

@@ -407,7 +407,7 @@ namespace Content.Server.GameObjects.Components.Atmos
 
         public virtual void AddSuperconductivityTile(TileAtmosphere tile)
         {
-            if (tile?.GridIndex != _gridId) return;
+            if (tile?.GridIndex != _gridId || !AtmosphereSystem.Superconduction) return;
             _superconductivityTiles.Add(tile);
         }
 
@@ -606,7 +606,10 @@ namespace Content.Server.GameObjects.Components.Atmos
                     }
 
                     _paused = false;
-                    _state = ProcessState.Superconductivity;
+                    // Next state depends on whether superconduction is enabled or not.
+                    // Note: We do this here instead of on the tile equalization step to prevent ending it early.
+                    //       Therefore, a change to this CVar might only be applied after that step is over.
+                    _state = AtmosphereSystem.Superconduction ? ProcessState.Superconductivity : ProcessState.PipeNet;
                     break;
                 case ProcessState.Superconductivity:
                     if (!ProcessSuperconductivity(_paused, maxProcessTime))

Content.Server/GameObjects/EntitySystems/AtmosphereSystem.cs

@@ -69,6 +69,7 @@ namespace Content.Server.GameObjects.EntitySystems
 
             _cfg.OnValueChanged(CCVars.SpaceWind, OnSpaceWindChanged, true);
             _cfg.OnValueChanged(CCVars.MonstermosEqualization, OnMonstermosEqualizationChanged, true);
+            _cfg.OnValueChanged(CCVars.Superconduction, OnSuperconductionChanged, true);
             _cfg.OnValueChanged(CCVars.AtmosMaxProcessTime, OnAtmosMaxProcessTimeChanged, true);
             _cfg.OnValueChanged(CCVars.AtmosTickRate, OnAtmosTickRateChanged, true);
             _cfg.OnValueChanged(CCVars.ExcitedGroupsSpaceIsAllConsuming, OnExcitedGroupsSpaceIsAllConsumingChanged, true);
@@ -76,6 +77,7 @@ namespace Content.Server.GameObjects.EntitySystems
 
         public bool SpaceWind { get; private set; }
         public bool MonstermosEqualization { get; private set; }
+        public bool Superconduction { get; private set; }
         public bool ExcitedGroupsSpaceIsAllConsuming { get; private set; }
         public float AtmosMaxProcessTime { get; private set; }
         public float AtmosTickRate { get; private set; }
@@ -100,6 +102,11 @@ namespace Content.Server.GameObjects.EntitySystems
             MonstermosEqualization = obj;
         }
 
+        private void OnSuperconductionChanged(bool obj)
+        {
+            Superconduction = obj;
+        }
+
         private void OnSpaceWindChanged(bool obj)
         {
             SpaceWind = obj;

Content.Shared/CCVars.cs

@@ -234,6 +234,13 @@ namespace Content.Shared
         public static readonly CVarDef<bool> MonstermosEqualization =
             CVarDef.Create("atmos.monstermos_equalization", true, CVar.SERVERONLY);
 
+        /// <summary>
+        ///     Whether atmos superconduction is enabled.
+        /// </summary>
+        /// <remarks> Disabled by default, superconduction is awful. </remarks>
+        public static readonly CVarDef<bool> Superconduction =
+            CVarDef.Create("atmos.superconduction", false, CVar.SERVERONLY);
+
         /// <summary>
         ///     Maximum time in milliseconds that atmos can take processing.
         /// </summary>