feat(battle-engine): copy-loop closure to 3282 files (member-surface frontier)

SVSim.BattleEngine/Engine/UIDragDropRoot.cs

@@ -0,0 +1,20 @@
+using UnityEngine;
+
+[AddComponentMenu("NGUI/Interaction/Drag and Drop Root")]
+public class UIDragDropRoot : MonoBehaviour
+{
+	public static Transform root;
+
+	private void OnEnable()
+	{
+		root = base.transform;
+	}
+
+	private void OnDisable()
+	{
+		if (root == base.transform)
+		{
+			root = null;
+		}
+	}
+}