cancel build right mouse button

src/Gameplay/BuildGhost.cs

@@ -73,10 +73,13 @@ public partial class BuildGhost : Node2D
     {
         using (@event)
         {
+            if (@event is InputEventMouseButton { Pressed: true, ButtonIndex: MouseButton.Right })
+            {
+                CleanupBuildMode();
+            }
+
             if (@event is InputEventMouseButton { Pressed: false, ButtonIndex: MouseButton.Left })
             {
-                NoduleManager.Instance.Building = false;
-
                 var nodule = Instantiator.Instantiate<Nodule>();
 
                 nodule.Position = Position;
@@ -86,16 +89,22 @@ public partial class BuildGhost : Node2D
 
                 GetParent()?.AddChild(nodule);
 
-                foreach (var (_, tube) in _connectedTubes)
-                {
-                    tube.QueueFree();
-                }
-
-                _connectedTubes.Clear();
-                QueueFree();
-
-                GetViewport().SetInputAsHandled();
+                CleanupBuildMode();
             }
         }
     }
+
+    private void CleanupBuildMode()
+    {
+        NoduleManager.Instance.Building = false;
+        foreach (var (_, tube) in _connectedTubes)
+        {
+            tube.QueueFree();
+        }
+
+        _connectedTubes.Clear();
+        QueueFree();
+
+        GetViewport().SetInputAsHandled();
+    }
 }