Adapt window construction to new sprites and grilles.

Content.Shared/Construction/Conditions/EmptyOrWindowValidInTile.cs

@@ -0,0 +1,34 @@
+using Content.Shared.Maps;
+using Content.Shared.Window;
+using JetBrains.Annotations;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Map;
+using Robust.Shared.Maths;
+using Robust.Shared.Serialization.Manager.Attributes;
+
+namespace Content.Shared.Construction.Conditions
+{
+    [UsedImplicitly]
+    [DataDefinition]
+    public class EmptyOrWindowValidInTile : IConstructionCondition
+    {
+        [DataField("tileNotBlocked")]
+        private readonly TileNotBlocked _tileNotBlocked = new();
+
+        public bool Condition(IEntity user, EntityCoordinates location, Direction direction)
+        {
+            var result = false;
+
+            foreach (var entity in location.GetEntitiesInTile(LookupFlags.Approximate | LookupFlags.IncludeAnchored))
+            {
+                if (entity.HasComponent<SharedCanBuildWindowOnTopComponent>())
+                    result = true;
+            }
+
+            if (!result)
+                result = _tileNotBlocked.Condition(user, location, direction);
+
+            return result;
+        }
+    }
+}