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NitroxPatcher/Patches/Dynamic/Builder_Update_Patch.cs

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+using System.Reflection;
+using NitroxClient.GameLogic.Bases;
+using NitroxClient.GameLogic.Settings;
+using NitroxClient.Helpers;
+using NitroxModel.DataStructures;
+using NitroxModel.Helper;
+using UnityEngine;
+
+namespace NitroxPatcher.Patches.Dynamic;
+
+/// <summary>
+/// Changes the piece color during the placing process if the current base is desynced.
+/// </summary>
+public sealed partial class Builder_Update_Patch : NitroxPatch, IDynamicPatch
+{
+    public static readonly MethodInfo TARGET_METHOD = Reflect.Method(() => Builder.Update());
+    private static readonly Color DESYNCED_COLOR = Color.magenta;
+
+    public static void Postfix()
+    {
+        if (!Builder.canPlace || !BuildingHandler.Main || !NitroxPrefs.SafeBuilding.Value)
+        {
+            return;
+        }
+        BaseGhost baseGhost = Builder.ghostModel.GetComponent<BaseGhost>();
+        GameObject parentBase;
+        if (baseGhost && baseGhost.targetBase)
+        {
+            parentBase = baseGhost.targetBase.gameObject;
+        }
+        // In case it's a simple Constructable
+        else
+        {
+            parentBase = Builder.placementTarget;
+        }
+
+        if (parentBase && parentBase.TryGetNitroxId(out NitroxId parentId) &&
+            BuildingHandler.Main.EnsureTracker(parentId).IsDesynced())
+        {
+            Builder.canPlace = false;
+            Builder.ghostStructureMaterial.SetColor(ShaderPropertyID._Tint, DESYNCED_COLOR);
+        }
+    }
+}