Salvage dungeons (#14520)

Content.Shared/Procedural/PostGeneration/BoundaryWallPostGen.cs

@@ -0,0 +1,23 @@
+using Content.Shared.Maps;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+
+namespace Content.Shared.Procedural.PostGeneration;
+
+/// <summary>
+/// Iterates room edges and places the relevant tiles and walls on any free indices.
+/// </summary>
+public sealed class BoundaryWallPostGen : IPostDunGen
+{
+    [DataField("tile", customTypeSerializer:typeof(PrototypeIdSerializer<ContentTileDefinition>))]
+    public string Tile = "FloorSteel";
+
+    [DataField("wall", customTypeSerializer:typeof(PrototypeIdSerializer<EntityPrototype>))]
+    public string Wall = "WallSolid";
+
+    /// <summary>
+    /// Walls to use in corners if applicable.
+    /// </summary>
+    [DataField("cornerWall", customTypeSerializer:typeof(PrototypeIdSerializer<EntityPrototype>))]
+    public string? CornerWall;
+}