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/SpriteChange.cs

@@ -0,0 +1,33 @@
+#nullable enable
+using System.Threading.Tasks;
+using Content.Shared.Construction;
+using JetBrains.Annotations;
+using Robust.Server.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Serialization;
+using Robust.Shared.Utility;
+
+namespace Content.Server.Construction.Completions
+{
+    [UsedImplicitly]
+    public class SpriteChange : IGraphAction
+    {
+        public void ExposeData(ObjectSerializer serializer)
+        {
+            serializer.DataField(this, x => x.SpriteSpecifier, "specifier", SpriteSpecifier.Invalid);
+            serializer.DataField(this, x => x.Layer, "layer", 0);
+        }
+
+        public int Layer { get; private set; } = 0;
+        public SpriteSpecifier? SpriteSpecifier { get; private set; } = SpriteSpecifier.Invalid;
+
+        public async Task PerformAction(IEntity entity, IEntity? user)
+        {
+            if (entity.Deleted || SpriteSpecifier == null || SpriteSpecifier == SpriteSpecifier.Invalid) return;
+
+            if (!entity.TryGetComponent(out SpriteComponent? sprite)) return;
+
+            sprite.LayerSetSprite(Layer, SpriteSpecifier);
+        }
+    }
+}