whoops

Content.Server/Utility/GridTileLookupHelpers.cs

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+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using Content.Shared.Maps;
+using Robust.Server.GameObjects.EntitySystems.TileLookup;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Map;
+
+namespace Content.Server.Utility
+{
+    public static class GridTileLookupHelpers
+    {
+        /// <summary>
+        ///     Helper that returns all entities in a turf very fast.
+        /// </summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static IEnumerable<IEntity> GetEntitiesInTileFast(this TileRef turf)
+        {
+            var gridTileLookup = EntitySystem.Get<GridTileLookupSystem>();
+
+            return gridTileLookup.GetEntitiesIntersecting(turf.GridIndex, turf.GridIndices);
+        }
+
+        /// <summary>
+        ///     Helper that returns all entities in a turf.
+        /// </summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static IEnumerable<IEntity> GetEntitiesInTileFast(this MapIndices indices, GridId gridId)
+        {
+            var turf = indices.GetTileRef(gridId);
+
+            if (turf == null)
+                return Enumerable.Empty<IEntity>();
+
+            return GetEntitiesInTileFast(turf.Value);
+        }
+    }
+}