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.Server/Construction/Completions/BuildComputer.cs

@@ -0,0 +1,68 @@
+#nullable enable
+using System.Threading.Tasks;
+using Content.Server.GameObjects.Components.Construction;
+using Content.Shared.Construction;
+using JetBrains.Annotations;
+using Robust.Server.GameObjects.Components.Container;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Log;
+using Robust.Shared.Serialization;
+
+namespace Content.Server.Construction.Completions
+{
+    [UsedImplicitly]
+    public class BuildComputer : IGraphAction
+    {
+        public string Container { get; private set; } = string.Empty;
+
+        public void ExposeData(ObjectSerializer serializer)
+        {
+            serializer.DataField(this, x => x.Container, "container", string.Empty);
+        }
+
+        public async Task PerformAction(IEntity entity, IEntity? user)
+        {
+            if (!entity.TryGetComponent(out ContainerManagerComponent? containerManager))
+            {
+                Logger.Warning($"Computer entity {entity} did not have a container manager! Aborting build computer action.");
+                return;
+            }
+
+            if (!containerManager.TryGetContainer(Container, out var container))
+            {
+                Logger.Warning($"Computer entity {entity} did not have the specified '{Container}' container! Aborting build computer action.");
+                return;
+            }
+
+            if (container.ContainedEntities.Count != 1)
+            {
+                Logger.Warning($"Computer entity {entity} did not have exactly one item in the specified '{Container}' container! Aborting build computer action.");
+            }
+
+            var board = container.ContainedEntities[0];
+
+            if (!board.TryGetComponent(out ComputerBoardComponent? boardComponent))
+            {
+                Logger.Warning($"Computer entity {entity} had an invalid entity in container \"{Container}\"! Aborting build computer action.");
+                return;
+            }
+
+            var entityManager = entity.EntityManager;
+            container.Remove(board);
+
+            var computer = entityManager.SpawnEntity(boardComponent.Prototype, entity.Transform.Coordinates);
+            computer.Transform.LocalRotation = entity.Transform.LocalRotation;
+
+            var computerContainer = ContainerManagerComponent.Ensure<Container>(Container, computer);
+            computerContainer.Insert(board);
+
+            if (computer.TryGetComponent(out ConstructionComponent? construction))
+            {
+                // We only add this container. If some construction needs to take other containers into account, fix this.
+                construction.AddContainer(Container);
+            }
+
+            entity.Delete();
+        }
+    }
+}