Dungeon generation refactor (#17121)

Content.Shared/Procedural/PostGeneration/JunctionPostGen.cs

@@ -0,0 +1,28 @@
+using Content.Shared.Maps;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.List;
+
+namespace Content.Shared.Procedural.PostGeneration;
+
+/// <summary>
+/// Places the specified entities at junction areas.
+/// </summary>
+public sealed class JunctionPostGen : IPostDunGen
+{
+    /// <summary>
+    /// Width to check for junctions.
+    /// </summary>
+    [DataField("width")]
+    public int Width = 3;
+
+    [DataField("tile", customTypeSerializer:typeof(PrototypeIdSerializer<ContentTileDefinition>))]
+    public string Tile = "FloorSteel";
+
+    [DataField("entities", customTypeSerializer: typeof(PrototypeIdListSerializer<EntityPrototype>))]
+    public List<string?> Entities = new()
+    {
+        "CableApcExtension",
+        "AirlockGlass"
+    };
+}