Id associated with a managed reference.
Available when propertyType is SerializedPropertyType.ManagedReference. If the reference is null then the Id is SerializeUtility.RefIdNull.
Additional resources: SerializeReference, managedReferenceValue, ManagedReferenceUtility.GetManagedReferenceIdForObject.
using System; using UnityEditor; using UnityEngine;
public class SerializedPropertyManagedReferenceIdExample : ScriptableObject { [Serializable] public class Item { public int m_data = 1; }
[SerializeReference] public Item m_Item;
[SerializeReference] public Item m_Item2;
[MenuItem("Example/SerializedProperty ManagedReferenceId Example")] static void TestMethod1() { var scriptableObject = ScriptableObject.CreateInstance<SerializedPropertyManagedReferenceIdExample>(); scriptableObject.m_Item = new Item();
using (var serializedObject = new SerializedObject(scriptableObject)) { var itemProperty = serializedObject.FindProperty("m_Item"); var item2Property = serializedObject.FindProperty("m_Item2");
// Set m_Item2 to point to the same object as m_Item // Note: managedReferenceValue could also be used here, for the same result item2Property.managedReferenceId = itemProperty.managedReferenceId;
serializedObject.ApplyModifiedProperties(); }
// Check the results back on the live object
//Will print "Value of m_Item2.m_data: 1" Debug.Log("Value of m_Item2.m_data: " + scriptableObject.m_Item2.m_data);
// Prove that both fields point to the same object scriptableObject.m_Item.m_data = 2;
//Will print "Value of m_Item2.m_data: 2" Debug.Log("Value of m_Item2.m_data: " + scriptableObject.m_Item2.m_data); } }