Re-organize all projects (#4166)

Content.Server/NodeContainer/Nodes/AdjacentNode.cs

@@ -0,0 +1,41 @@
+#nullable enable
+using System.Collections.Generic;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+using Robust.Shared.Serialization.Manager.Attributes;
+
+namespace Content.Server.NodeContainer.Nodes
+{
+    /// <summary>
+    ///     A <see cref="Node"/> that can reach other <see cref="AdjacentNode"/>s that are directly adjacent to it.
+    /// </summary>
+    [DataDefinition]
+    public class AdjacentNode : Node
+    {
+        protected override IEnumerable<Node> GetReachableNodes()
+        {
+            if (!Owner.Transform.Anchored)
+                yield break;
+
+            var grid = IoCManager.Resolve<IMapManager>().GetGrid(Owner.Transform.GridID);
+            var coords = Owner.Transform.Coordinates;
+            foreach (var cell in grid.GetCardinalNeighborCells(coords))
+            {
+                foreach (var entity in grid.GetLocal(Owner.EntityManager.GetEntity(cell).Transform.Coordinates))
+                {
+                    if (!Owner.EntityManager.GetEntity(entity).TryGetComponent<NodeContainerComponent>(out var container))
+                        continue;
+
+                    foreach (var node in container.Nodes.Values)
+                    {
+                        if (node != null && node != this)
+                        {
+                            yield return node;
+                        }
+                    }
+
+                }
+            }
+        }
+    }
+}