Water vapor now makes puddles under 100ºC above 1 moles (#3489)

* Water vapor now makes puddles under 100ºC above 1 moles

* serv3 moment

* Update Content.Server/Atmos/Reactions/GasReactionPrototype.cs

Co-authored-by: Clyybber <darkmine956@gmail.com>

Co-authored-by: Clyybber <darkmine956@gmail.com>

Content.Server/Atmos/GasMixture.cs

@@ -495,7 +495,8 @@ namespace Content.Server.Atmos
             foreach (var prototype in _atmosphereSystem.GasReactions)
             {
                 if (energy < prototype.MinimumEnergyRequirement ||
-                    temperature < prototype.MinimumTemperatureRequirement)
+                    temperature < prototype.MinimumTemperatureRequirement ||
+                    temperature > prototype.MaximumTemperatureRequirement)
                     continue;
 
                 var doReaction = true;

Content.Server/Atmos/Reactions/GasReactionPrototype.cs

@@ -36,6 +36,12 @@ namespace Content.Server.Atmos.Reactions
         [DataField("minimumRequirements")]
         public float[] MinimumRequirements { get; private set; } = new float[Atmospherics.TotalNumberOfGases];
 
+        /// <summary>
+        ///     Maximum temperature requirement.
+        /// </summary>
+		  [DataField("maximumTemperature")]
+        public float MaximumTemperatureRequirement { get; private set; }
+        
         /// <summary>
         ///     Minimum temperature requirement.
         /// </summary>

Content.Server/Atmos/Reactions/WaterVaporReaction.cs

@@ -0,0 +1,44 @@
+#nullable enable
+using Content.Server.GameObjects.Components.Fluids;
+using Content.Server.Interfaces;
+using Content.Shared.Chemistry;
+using Content.Shared.Maps;
+using JetBrains.Annotations;
+using Robust.Server.GameObjects;
+using Robust.Shared.Serialization;
+using Robust.Shared.Serialization.Manager.Attributes;
+
+namespace Content.Server.Atmos.Reactions
+{
+    [UsedImplicitly]
+    public class WaterVaporReaction : IGasReactionEffect
+    {
+        [field: DataField("reagent")] public string? Reagent { get; } = null;
+
+        [field: DataField("gas")] public int GasId { get; } = 0;
+
+        [field: DataField("molesPerUnit")] public float MolesPerUnit { get; } = 1;
+
+        [field: DataField("puddlePrototype")] public string? PuddlePrototype { get; } = "PuddleSmear";
+
+        public ReactionResult React(GasMixture mixture, IGasMixtureHolder? holder, GridTileLookupSystem gridTileLookup)
+        {
+            // If any of the prototypes is invalid, we do nothing.
+            if (string.IsNullOrEmpty(Reagent) || string.IsNullOrEmpty(PuddlePrototype)) return ReactionResult.NoReaction;
+
+            // If we're not reacting on a tile, do nothing.
+            if (holder is not TileAtmosphere tile) return ReactionResult.NoReaction;
+
+            // If we don't have enough moles of the specified gas, do nothing.
+            if (mixture.GetMoles(GasId) < MolesPerUnit) return ReactionResult.NoReaction;
+
+            // Remove the moles from the mixture...
+            mixture.AdjustMoles(GasId, -MolesPerUnit);
+
+            var tileRef = tile.GridIndices.GetTileRef(tile.GridIndex);
+            tileRef.SpillAt(new Solution(Reagent, ReagentUnit.New(MolesPerUnit)), PuddlePrototype, sound: false);
+
+            return ReactionResult.Reacting;
+        }
+    }
+}

Resources/Prototypes/Atmospherics/reactions.yml

@@ -22,3 +22,19 @@
     - 0.01  # tritium
   effects:
     - !type:TritiumFireReaction {}
+
+- type: gasReaction
+  id: WaterVaporPuddle
+  priority: 1
+  maximumTemperature: 373.13 # Boiling point of water.
+  minimumRequirements: # In this case, same as minimum mole count.
+    - 0  # oxygen
+    - 0  # nitrogen
+    - 0  # carbon dioxide
+    - 0  # plasma
+    - 0  # tritium
+    - 1  # water vapor
+  effects:
+    - !type:WaterVaporReaction
+      gasId: 5
+      reagent: chem.Water