Move RequiresTileSystem to server (#21691)

Content.Server/Tiles/RequiresTileSystem.cs

@@ -0,0 +1,41 @@
+using Content.Shared.Tiles;
+using Robust.Shared.Map.Components;
+using Robust.Shared.Map.Enumerators;
+
+namespace Content.Server.Tiles;
+
+public sealed class RequiresTileSystem : EntitySystem
+{
+    /*
+     * Needs to be on server as client can't predict QueueDel.
+     */
+
+    [Dependency] private readonly SharedMapSystem _maps = default!;
+
+    private EntityQuery<RequiresTileComponent> _tilesQuery;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        _tilesQuery = GetEntityQuery<RequiresTileComponent>();
+        SubscribeLocalEvent<TileChangedEvent>(OnTileChange);
+    }
+
+    private void OnTileChange(ref TileChangedEvent ev)
+    {
+        if (!TryComp<MapGridComponent>(ev.Entity, out var grid))
+            return;
+
+        var anchored = _maps.GetAnchoredEntitiesEnumerator(ev.Entity, grid, ev.NewTile.GridIndices);
+        if (anchored.Equals(AnchoredEntitiesEnumerator.Empty))
+            return;
+
+        while (anchored.MoveNext(out var ent))
+        {
+            if (!_tilesQuery.HasComponent(ent.Value))
+                continue;
+
+            QueueDel(ent.Value);
+        }
+    }
+}