Editor Targets are updated but SerializedPropertys arent

Questions & Answers
1

Hey everyone!

Im building an application where I need to have Multiple Objects Edition while having a custom interface, so Im creating some Editor classes. Right now Im trying to update each selected object with a foreach target and then use it somewhere else with a SerializedProperty var, but this is just not working how I thought it should be.

_thrustersProp is defined as follows:

SerializedProperty _thrustersProp;

And inited inside OnEnable:

_thrustersProp = serializedObject.FindProperty ("_thrusters");

This is the code to update all selected targets, found within the ThrustersEditor class:

if( InterfaceEditor.CreateField( _thrustersCountProp, "SetThrusters" ) )
{
	Debug.Log ( "updating" );
	foreach ( SimVrRobotics.ROV.Thrusters pm in targets )
	{
		Debug.Log ( "Before - pm._thrusters.Length: " + pm._thrusters.Length );
		pm.updateThrusters( _thrustersCountProp.intValue );
		Debug.Log ( "After - pm._thrusters.Length: " + pm._thrusters.Length );
	}
	serializedObject.ApplyModifiedProperties ();
	serializedObject.Update ();

	Debug.Log("A - _thrustersProp.size: " + _thrustersProp.arraySize);
}

When Debugging, I can see that the “After” Debug shows me the behaviour Id expect, but this doesnt happen on the "A - " Debug, which shows me size 0.

This is the updateThrusters method, found within the Thrusters class, and here both Debugs works as expected.

public void updateThrusters( int newThrustersCount )
{   
	Thruster[] newThrusters = new Thruster[newThrustersCount];

	int previousThrusters = 0;
	Debug.Log( "newThrustersCount: " + newThrustersCount + " _thrusters.Length: " + _thrusters.Length );
	for( ; previousThrusters < _thrusters.Length; previousThrusters++ )
	{
		newThrusters[previousThrusters].SetRotation     ( _thrusters[previousThrusters].GetRotation()      );
		newThrusters[previousThrusters].SetRelativePos  ( _thrusters[previousThrusters].GetRelativePos()   );
		newThrusters[previousThrusters].SetMaxEffort    ( _thrusters[previousThrusters].GetMaxEffort()     );
		newThrusters[previousThrusters].SetSetThruster  ( _thrusters[previousThrusters].GetSetThruster()   );
		newThrusters[previousThrusters].SetFoldout      ( _thrusters[previousThrusters].GetFoldout()       );
	}
	if ( _thrusters.Length < newThrustersCount )
	{
		for ( ; previousThrusters < newThrustersCount; previousThrusters++ )
		{
			newThrusters[previousThrusters] = new Thruster();
		}
	}

	
	_thrustersCount = newThrustersCount;
	System.Array.Clear( _thrusters, 0, _thrusters.Length );
	_thrusters = new Thruster[newThrustersCount];
	newThrusters.CopyTo( _thrusters, 0 );
	Debug.Log( "2newThrustersCount: " + newThrustersCount + " _thrusters.Length: " + _thrusters.Length );
}

}

This is the nested class Thruster, defined inside the Thrusters class:

[System.Serializable]
public class Thruster
{
	public bool    _setThruster;
	public Vector3 _relativePos;
	public Vector3 _rotation;
	public Vector3 _direction;
	public float   _maxEffort;
	public bool    _foldout;

	public Thruster ( )
	{
		_setThruster = false;;
		_relativePos = new Vector3(0f, 0f, 0f);
		_rotation    = new Vector3(0f, 0f, 0f);
		_direction   = new Vector3(0f, 0f, 0f);
		_maxEffort   = 0.0f;
		_foldout = false;

	}
}

And finally, the following snip method, defined within the ThrustersEditor class, is how I access the nested class Thruster and where I get the error “Retrieving array element that was out of bounds”, because it has an arraySize of 0 according to Debug.Log.

private void createAttributes(  )
{
	for( int i = 0; i < _thrustersCountProp.intValue; i++ )
	{				
		Debug.Log ( "createAttributes - i: " + i + " _thrustersProp.size: " + _thrustersProp.arraySize);
		SerializedProperty thrusterElementProp = _thrustersProp.GetArrayElementAtIndex( i );
		
		SerializedProperty setThrusterProp 	= thrusterElementProp.FindPropertyRelative( "_setThruster" 	);
		SerializedProperty relativePosProp  = thrusterElementProp.FindPropertyRelative( "_relativePos" 	);
		SerializedProperty rotationProp 	= thrusterElementProp.FindPropertyRelative( "_rotation" 	);
		SerializedProperty directionProp 	= thrusterElementProp.FindPropertyRelative( "_direction" 	);
		SerializedProperty maxEffortProp 	= thrusterElementProp.FindPropertyRelative( "_maxEffort" 	);
		SerializedProperty foldoutProp		= thrusterElementProp.FindPropertyRelative( "_foldout" 		);

		EditorGUILayout.Space();
		InterfaceEditor.CreateBoldFoldout( "Thruster", foldoutProp, " " + i, true );
		EditorGUI.indentLevel++;
	}
}

What am I missing here?

Thank you for reading till the end and sorry for the long post, I just wanted to give as much information needed.

2

I dont understand why, but apparently I cant update an array the way I was. The way that worked for me was simply substituting the foreach where the update occured with _thrustersProp.arraySize = _thrustersCountProp.intValue;