ofb/Assets/Scripts/SpawnPointBehavior.cs

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

public class SpawnPointBehavior : MonoBehaviour
{

     // set in inspector
    [Header("Sprites")]
    [SerializeField] private Sprite deactivatedSprite;
    [SerializeField] private Sprite activatedSprite;

    // not set in inspector
    private SpriteRenderer _sr;
    private StateController stateController;

    // Start is called before the first frame update
    void Start()
    {
      _sr = this.gameObject.GetComponent<SpriteRenderer>();  
      stateController = GameObject.Find("StateController").GetComponent<StateController>();
    }

    public void ActivateSpawnPoint() {
        _sr.sprite = activatedSprite;
        stateController.spawnPoint = this.gameObject;
    }

    public void DeactivateSpawnPoint() {
        _sr.sprite = deactivatedSprite;
    }
}