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GameObject missing after save custom action


I used ActionCheckTransform script present in this post in my project.

Here is the ActionList:

And after saving:

The ActionList is saved in a folder into Assets.

I use:
Unity 2021.3.11f1
AdventureCreator v1.73.3



  • An asset file that references a GameObject in the scene will lose the reference when that scene is closed. A means must be then made for that connection to be restored again.

    AC provides a way to do this via the Constant ID system, whereby scene objects referenced by assets via a unique ID number. The Action needs to be updated to use it (see this tutorial), but once set up the re-connection process should be automatic.

    The Action's system code structure has also been streamlined since the other thread. Here's an updated version of gaius' original script, which fixes the issue:

    using UnityEngine;
    using UnityEditor;
    namespace AC
        public class ActionCheckTransform : ActionCheck
            public GameObject objectToCheck;
            public int constantID;
            public Vector3 newVector;
            public override ActionCategory Category { get { return ActionCategory.Object; }}
            public override string Title { get { return "Check Object Transform"; }}
            public override void AssignValues ()
                objectToCheck = AssignFile (constantID, objectToCheck);
            public override bool CheckCondition ()
                if (objectToCheck)
                    // Check rotation of object
                    Vector3 objectRotation = objectToCheck.transform.eulerAngles;
                    //Convert Vector3 Euler angles to Quaternion
                    Quaternion a = Quaternion.Euler(newVector);
                    Quaternion b = Quaternion.Euler(objectRotation);
                    //Get angle between Quaternion values
                    float angle = Quaternion.Angle(a,b);
                    //Compare angle to some tolerance
                    return (angle < 1f);
                return false;
            public override void ShowGUI ()
                objectToCheck = (GameObject) EditorGUILayout.ObjectField ("GameObject to check:", objectToCheck, typeof (GameObject), true);
                constantID = FieldToID (objectToCheck, constantID);
                objectToCheck = IDToField (objectToCheck, constantID, true);
                newVector = EditorGUILayout.Vector3Field ("Check has rotation value:", newVector);
  • Thanks Chris,
    The new script works perfectly even after reopening, and the explanations keep me going.

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