ScriptableObect 샘플

using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif

//CreateAssetMenu属性をつけるとメニューからScriptableObjectを作成できるようになる
[CreateAssetMenu(menuName = "ScriptableObject/SamplePathScriptableObject", fileName = "SamplePathScriptableObject.asset")]
public class SamplePathScriptableObject : ScriptableObject
{
    public string SampleString;

    public int SampleInt;
}

#if UNITY_EDITOR
//CustomEditor属性でInspectorのEditor拡張が行える
[CustomEditor(typeof(SamplePathScriptableObject))]
public class SamplePathScriptableObjectInspector : Editor
{
    public override void OnInspectorGUI()
    {
        //元のInspectorを表示する
        base.OnInspectorGUI();

        //InstanceIDからObjectを取得する
        var obj = EditorUtility.InstanceIDToObject(target.GetInstanceID());

        //取得したObjectからアセットのパスを取得する(拡張子あり)
        var path = AssetDatabase.GetAssetPath(obj);

        if (string.IsNullOrEmpty(path))
        {
            return;
        }

        //HelpBoxでパスを表示する
        EditorGUILayout.HelpBox(path, MessageType.Info);
    }
}
#endif

Prefab 샘플

using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif

public class SamplePrefab : MonoBehaviour
{
    [SerializeField]
    string SampleString;

    [SerializeField]
    int SampleInt;
}

#if UNITY_EDITOR
[CustomEditor(typeof(SamplePrefab))]
public class SamplePrefabObjectInspector : Editor
{
    public override void OnInspectorGUI()
    {
        base.OnInspectorGUI();

        var obj = EditorUtility.InstanceIDToObject(target.GetInstanceID());

        var path = AssetDatabase.GetAssetPath(obj);

        if (string.IsNullOrEmpty(path))
        {
            return;
        }

        EditorGUILayout.HelpBox(path, MessageType.Info);
    }
}
#endif

응용편 특정 패스 이외에 놓았을 경우에 경고를 낸다

using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif

[CreateAssetMenu(menuName = "ScriptableObject/SamplePathScriptableObject", fileName = "SamplePathScriptableObject.asset")]
public class SamplePathScriptableObject : ScriptableObject
{
    /// <summary>
    /// アセットの正しい保存パス
    /// </summary>
    public const string ASSET_PATH = "Assets/Resources/ScriptableObject/SamplePathScriptableObject.asset";

    public string SampleString;

    public int SampleInt;
}

#if UNITY_EDITOR
[CustomEditor(typeof(SamplePathScriptableObject))]
public class SamplePathScriptableObjectInspector : Editor
{
    public override void OnInspectorGUI()
    {
        base.OnInspectorGUI();

        var obj = EditorUtility.InstanceIDToObject(target.GetInstanceID());

        var path = AssetDatabase.GetAssetPath(obj);

        if (string.IsNullOrEmpty(path))
        {
            return;
        }

        if(path != SamplePathScriptableObject.ASSET_PATH)
        {
            var message = $"アセットのパスが間違っています\n{SamplePathScriptableObject.ASSET_PATH}に保存してください";
            EditorGUILayout.HelpBox(message, MessageType.Error);
        }


    }
}
#endif