Data-oriented Construction System (#2152)

- Powerful
- Data-oriented
- Approved by PJB
- Powered by node graphs and AI pathfinding
- Coded by the same nerd who brought you atmos

Co-authored-by: Exp <theexp111@gmail.com>

Content.Client/GameObjects/Components/Construction/ConstructionGhostComponent.cs

@@ -1,8 +1,9 @@
 using Content.Shared.Construction;
 using Content.Shared.GameObjects.EntitySystems;
 using Robust.Shared.GameObjects;
-using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.IoC;
 using Robust.Shared.Localization;
+using Robust.Shared.Prototypes;
 using Robust.Shared.Utility;
 using Robust.Shared.ViewVariables;
 
@@ -11,6 +12,8 @@ namespace Content.Client.GameObjects.Components.Construction
     [RegisterComponent]
     public class ConstructionGhostComponent : Component, IExamine
     {
+        [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+
         public override string Name => "ConstructionGhost";
 
         [ViewVariables] public ConstructionPrototype Prototype { get; set; }
@@ -18,8 +21,13 @@ namespace Content.Client.GameObjects.Components.Construction
 
         void IExamine.Examine(FormattedMessage message, bool inDetailsRange)
         {
-            message.AddText(Loc.GetString("Building: {0}\n", Prototype.Name));
-            EntitySystem.Get<SharedConstructionSystem>().DoExamine(message, Prototype, 0, inDetailsRange);
+            message.AddMarkup(Loc.GetString("Building: [color=cyan]{0}[/color]\n", Prototype.Name));
+
+            if (!_prototypeManager.TryIndex(Prototype.Graph, out ConstructionGraphPrototype graph)) return;
+            var startNode = graph.Nodes[Prototype.StartNode];
+            var path = graph.Path(Prototype.StartNode, Prototype.TargetNode);
+            var edge = startNode.GetEdge(path[0].Name);
+            edge.Steps[0].DoExamine(message, inDetailsRange);
         }
     }
 }