using UnityEngine;
using UnityEditor;

[CustomEditor(typeof(MeshRenderer))]
public class MeshRendererEditor : Editor
{
    MeshRenderer _meshRenderer;

    public override void OnInspectorGUI()
    {
        base.OnInspectorGUI();
        _meshRenderer = target as MeshRenderer;

        string[] layerNames = new string[SortingLayer.layers.Length];
        for (int i = 0; i < SortingLayer.layers.Length; i++)
            layerNames[i] = SortingLayer.layers[i].name;

        if (_meshRenderer)
        {
            int layerValue = SortingLayer.GetLayerValueFromID(_meshRenderer.sortingLayerID);
            layerValue = EditorGUILayout.Popup("Sorting Layer", layerValue, layerNames);

            SortingLayer layer = SortingLayer.layers[layerValue];
            _meshRenderer.sortingLayerName = layer.name;
            _meshRenderer.sortingLayerID = layer.id;
        }

        if (_meshRenderer)
            _meshRenderer.sortingOrder = EditorGUILayout.IntField("Order in Layer", _meshRenderer.sortingOrder);
    }
}