Trouble with editing fields of prefab instance

Questions & Answers
1

I’ve made CustomEditor for one of my classes and it works great except of one little detail: when I edit properties of prefab’s instance, those are reverted to prefab’s values at the start. But I can modify properties of other classes that don’t have CustomEditor with help of inspector and they behave just as expected. What am I missing?

Here is some code for those who will ask for it:

using UnityEngine;
using System.Collections;
using UnityEditor;

[CustomEditor(typeof(Controller))]
public class ControllerEditorScript : Editor
{
	bool info = false;
	bool gameSettings = false;

	Controller thatController;

	void Awake()
	{
		thatController = (Controller)target;
		specElemSize = thatController.goal_specialElementsList.Count;
		packagesSize = thatController.goal_packagesList.Count;
	}

	public override void OnInspectorGUI()
	{
		thatController = (Controller)target;

		#region Info
		info = EditorGUILayout.Foldout(info, "Info");
		if(info)
		{
			thatController.score = EditorGUILayout.IntField("Current Score:", thatController.score);
		}
		EditorGUILayout.Space();
		#endregion

		#region Settings
		gameSettings = EditorGUILayout.Foldout(gameSettings, "Game Settings");
		if(gameSettings)
		{
			thatController.mode = EditorGUILayout.TextField("Current mode", thatController.mode);
			thatController.spawnCounter = EditorGUILayout.IntField("Spawning at once:", thatController.spawnCounter);
			thatController.delayTime = EditorGUILayout.FloatField("Delay between spawns:", thatController.delayTime);
			thatController.startSpawn = EditorGUILayout.IntField("Spawning at start:", thatController.startSpawn);
			thatController.AmountCap = EditorGUILayout.IntField("Max food:", thatController.AmountCap);
			thatController.maxDistance = EditorGUILayout.FloatField("Con. distance:", thatController.maxDistance);
			thatController.charge = EditorGUILayout.FloatField("Charge :", thatController.charge);
			thatController.ExplosionForce = EditorGUILayout.FloatField("Explosion Force:", thatController.ExplosionForce);
			thatController.helper = EditorGUILayout.ObjectField("Helper :", thatController.helper, typeof(GameObject), true) as GameObject;
		}
		EditorGUILayout.Space();
		#endregion
	}
}
2

So finally I’ve found out that the way of making CustomEditor described in BUILDING A CUSTOM INSPECTOR topic is not the right one. To make things work you should use SerializedObject and SerializedProperty as described in this absolutely awesome tutorial.