DungeonData rework (#37172)

* DungeonData rework

Back to fields, serializes better, just make new layers dumby.

* wawawewa

* Fix this

* Fixes

* review

* thanks fork

* fix

Content.Server/Procedural/DungeonJob/DungeonJob.CornerClutter.cs

@@ -0,0 +1,53 @@
+using System.Threading.Tasks;
+using Content.Shared.Procedural;
+using Content.Shared.Procedural.PostGeneration;
+using Robust.Shared.Random;
+
+namespace Content.Server.Procedural.DungeonJob;
+
+public sealed partial class DungeonJob
+{
+    /// <summary>
+    /// <see cref="CornerClutterDunGen"/>
+    /// </summary>
+    private async Task PostGen(CornerClutterDunGen gen, Dungeon dungeon, HashSet<Vector2i> reservedTiles, Random random)
+    {
+        var contentsTable = _prototype.Index(gen.Contents);
+
+        foreach (var tile in dungeon.CorridorTiles)
+        {
+            if (reservedTiles.Contains(tile))
+                continue;
+
+            var blocked = _anchorable.TileFree(_grid, tile, DungeonSystem.CollisionLayer, DungeonSystem.CollisionMask);
+
+            if (blocked)
+                continue;
+
+            // If at least 2 adjacent tiles are blocked consider it a corner
+            for (var i = 0; i < 4; i++)
+            {
+                var dir = (Direction) (i * 2);
+                blocked = HasWall(tile + dir.ToIntVec());
+
+                if (!blocked)
+                    continue;
+
+                var nextDir = (Direction) ((i + 1) * 2 % 8);
+                blocked = HasWall(tile + nextDir.ToIntVec());
+
+                if (!blocked)
+                    continue;
+
+                if (random.Prob(gen.Chance))
+                {
+                    var coords = _maps.GridTileToLocal(_gridUid, _grid, tile);
+                    var protos = contentsTable.Table.GetSpawns(random, _entManager, _prototype);
+                    _entManager.SpawnEntitiesAttachedTo(coords, protos);
+                }
+
+                break;
+            }
+        }
+    }
+}