AnimalSpawnMarkerEditor

using UnityEditor;

using UnityEngine;

namespace AnimalSimulator.Gameplay.Editor
{
    [CustomEditor(typeof(AnimalSpawnMarker))]
    public class AnimalSpawnMarkerEditor : UnityEditor.Editor
    {
        [DrawGizmo(GizmoType.Active | GizmoType.Pickable | GizmoType.NonSelected)]
        public static void RenderCustomGizmo(AnimalSpawnMarker marker, GizmoType gizmo)
        {
            Vector3 position = marker.transform.position;

            bool haveType = marker.Type != null;
            string typeName = haveType ? marker.Type.name : "UNDEFINED";
            Color color = haveType ? Color.blue : Color.red;
            Handles.color = color;
            GUIStyle style = new GUIStyle(GUI.skin.label);
            style.normal.textColor = color;
            Handles.Label(position + Vector3.up * 1f, typeName, style);
        }

        public override void OnInspectorGUI()
        {
            base.OnInspectorGUI();

            if (GUI.changed)
            {
                bool haveType = Marker.Type != null;
                string typeName = haveType ? Marker.Type.name : "UNDEFINED";

                Marker.name = $"{typeName} Spawner";

                serializedObject.ApplyModifiedProperties();
                serializedObject.UpdateIfRequiredOrScript();
            }
        }

        private AnimalSpawnMarker Marker => (AnimalSpawnMarker)target;
    }
}