WaypointEditor - Path Drawer

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

namespace Core
{
    namespace WaypointEditor
    {
        [CustomEditor(typeof(BasicPatrolState))]
        public class EnemyAIPathDrawer : Editor
        {
            BasicPatrolState m_AIcomponent;
            float size = 1f;

            int emptyobjectcounter;

            void OnEnable()
            {
                m_AIcomponent = (BasicPatrolState)target;
            }

            void OnSceneGUI()
            {
                Handles.color = Color.green;
                List<Transform> m_waypoints = m_AIcomponent.Path;

                if (m_waypoints.Count > 0)
                {
                    for (int trwp = 0; trwp < m_waypoints.Count; trwp++)
                    {
                        if (m_waypoints[trwp] != null)
                        {
                            Handles.color = Color.black;
                            Handles.Label(new Vector3(m_waypoints[trwp].transform.position.x + 0.5f, m_waypoints[trwp].transform.position.y
                            , m_waypoints[trwp].transform.position.z + 1.5f), "P_" + trwp, new GUIStyle() { fontSize = 12 });

                            Handles.color = Color.red;
                            EditorGUI.BeginChangeCheck();
                            Vector3 newposition = Handles.FreeMoveHandle(m_waypoints[trwp].transform.position, Quaternion.identity, size, Vector3.one * 0.5f, Handles.SphereHandleCap);
                            if (EditorGUI.EndChangeCheck())
                            {
                                Undo.RecordObject(m_waypoints[trwp], "Change waypoint position");
                                m_waypoints[trwp].transform.position = newposition;
                            }
                        }
                    }
                    Handles.color = Color.green;
                    if (m_AIcomponent.LoopPath == true)
                    {
                        for (int wp = 1; wp < m_waypoints.Count + 1; wp++)
                        {
                            if (m_waypoints[wp - 1] != null)
                            {
                                Transform previouswaypoint = m_waypoints[wp - 1];
                                Transform currentwaypoint = m_waypoints[wp % m_waypoints.Count];

                                Handles.DrawLine(previouswaypoint.position, currentwaypoint.position);
                            }
                        }
                    }
                    else
                    {
                        for (int wp = 1; wp < m_waypoints.Count + 1; wp++)
                        {
                            if (m_waypoints[wp - 1] != null)
                            {
                                Transform previouswaypoint = m_waypoints[wp - 1];
                                Transform currentwaypoint = m_waypoints[wp % m_waypoints.Count];

                                if (wp != m_waypoints.Count)
                                    Handles.DrawLine(previouswaypoint.position, currentwaypoint.position);
                            }
                        }
                    }
                }
                Handles.color = Color.white;
                HandleUtility.Repaint();
            }
        }
    }
}