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.EntranceFlank.cs

@@ -0,0 +1,51 @@
+using System.Threading.Tasks;
+using Content.Shared.Maps;
+using Content.Shared.Procedural;
+using Content.Shared.Procedural.PostGeneration;
+using Content.Shared.Storage;
+using Robust.Shared.Collections;
+using Robust.Shared.Map;
+
+namespace Content.Server.Procedural.DungeonJob;
+
+public sealed partial class DungeonJob
+{
+    /// <summary>
+    /// <see cref="EntranceFlankDunGen"/>
+    /// </summary>
+    private async Task PostGen(EntranceFlankDunGen gen, Dungeon dungeon, HashSet<Vector2i> reservedTiles, Random random)
+    {
+        var tiles = new List<(Vector2i Index, Tile)>();
+        var tileDef = _tileDefManager[gen.Tile];
+        var spawnPositions = new ValueList<Vector2i>(dungeon.Rooms.Count);
+        var contents = _prototype.Index(gen.Contents);
+
+        foreach (var room in dungeon.Rooms)
+        {
+            foreach (var entrance in room.Entrances)
+            {
+                for (var i = 0; i < 8; i++)
+                {
+                    var dir = (Direction) i;
+                    var neighbor = entrance + dir.ToIntVec();
+
+                    if (!dungeon.RoomExteriorTiles.Contains(neighbor))
+                        continue;
+
+                    if (reservedTiles.Contains(neighbor))
+                        continue;
+
+                    tiles.Add((neighbor, _tile.GetVariantTile((ContentTileDefinition) tileDef, random)));
+                    spawnPositions.Add(neighbor);
+                }
+            }
+        }
+
+        _maps.SetTiles(_gridUid, _grid, tiles);
+
+        foreach (var entrance in spawnPositions)
+        {
+            _entManager.SpawnEntitiesAttachedTo(_maps.GridTileToLocal(_gridUid, _grid, entrance), _entTable.GetSpawns(contents, random));
+        }
+    }
+}