Add heat conduction (#1653)

Content.Shared/Atmos/Atmospherics.cs

@@ -63,6 +63,11 @@ namespace Content.Shared.Atmos
         /// </summary>
         public const float MolesCellStandard = (OneAtmosphere * CellVolume / (T20C * R));
 
+        /// <summary>
+        ///     Compared against for superconduction.
+        /// </summary>
+        public const float MCellWithRatio = (MolesCellStandard * 0.005f);
+
         public const float OxygenStandard = 0.21f;
         public const float NitrogenStandard = 0.79f;
 
@@ -83,6 +88,11 @@ namespace Content.Shared.Atmos
 
         public const float OpenHeatTransferCoefficient = 0.4f;
 
+        /// <summary>
+        ///     Hack to make vacuums cold, sacrificing realism for gameplay.
+        /// </summary>
+        public const float HeatCapacityVacuum = 7000f;
+
         /// <summary>
         ///     Ratio of air that must move to/from a tile to reset group processing
         /// </summary>
@@ -116,6 +126,7 @@ namespace Content.Shared.Atmos
         ///     Minimum temperature for starting superconduction.
         /// </summary>
         public const float MinimumTemperatureStartSuperConduction = (T20C + 200f);
+        public const float MinimumTemperatureForSuperconduction = (T20C + 10f);
 
         /// <summary>
         ///     Minimum heat capacity.
@@ -214,6 +225,8 @@ namespace Content.Shared.Atmos
         ///     so it just applies this flat value).
         /// </summary>
         public const int LowPressureDamage = 4;
+
+        public const float WindowHeatTransferCoefficient = 0.1f;
     }
 
     /// <summary>

Content.Shared/Maps/ContentTileDefinition.cs

@@ -26,6 +26,7 @@ namespace Content.Shared.Maps
         public bool CanCrowbar { get; private set; }
         public string FootstepSounds { get; private set; }
         public float Friction { get; set; }
+        public float ThermalConductivity { get; set; }
         public string ItemDropPrototypeName { get; private set; }
 
         public void AssignTileId(ushort id)
@@ -68,6 +69,15 @@ namespace Content.Shared.Maps
                 Friction = 0;
             }
 
+            if (mapping.TryGetNode("thermalConductivity", out node))
+            {
+                ThermalConductivity = node.AsFloat();
+            }
+            else
+            {
+                ThermalConductivity = 0.05f;
+            }
+
             if (mapping.TryGetNode("item_drop", out node))
             {
                 ItemDropPrototypeName = node.ToString();

Content.Shared/Maps/TurfHelpers.cs

@@ -12,6 +12,34 @@ namespace Content.Shared.Maps
 {
     public static class TurfHelpers
     {
+        /// <summary>
+        ///     Returns the content tile definition for a tile.
+        /// </summary>
+        public static ContentTileDefinition GetContentTileDefinition(this Tile tile)
+        {
+            var tileDefinitionManager = IoCManager.Resolve<ITileDefinitionManager>();
+            return (ContentTileDefinition)tileDefinitionManager[tile.TypeId];
+        }
+
+        /// <summary>
+        ///     Attempts to get the turf at map indices with grid id or null if no such turf is found.
+        /// </summary>
+        public static TileRef? GetTileRef(this MapIndices mapIndices, GridId gridId)
+        {
+            if (!gridId.IsValid())
+                return null;
+
+            var mapManager = IoCManager.Resolve<IMapManager>();
+
+            if (!mapManager.TryGetGrid(gridId, out var grid))
+                return null;
+
+            if (!grid.TryGetTileRef(mapIndices, out var tile))
+                return null;
+
+            return tile;
+        }
+
         /// <summary>
         ///     Attempts to get the turf at a certain coordinates or null if no such turf is found.
         /// </summary>