Untitled

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

public class PlacementHelper : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {

        GetComponent<SpriteRenderer>().color = Color.green;
    }

    private bool _paused;
    private Rigidbody2D _body;
    private void Awake()
    {
        _body = GetComponent<Rigidbody2D>();
    }
    // Update is called once per frame
    void Update()
    {

        _body.isKinematic = true;
    }

    private void OnCollisionStay2D(Collision2D collision)
    {
        Debug.Log("stay");
        GetComponent<SpriteRenderer>().color = Color.red;
    }

    private void OnCollisionExit2D(Collision2D collision)
    {

        Debug.Log("exit");
        GetComponent<SpriteRenderer>().color = Color.green;
    }

    private void OnTriggerEnter2D(Collider2D collision)
    {
        Debug.Log("OnTriggerEnter");
    }

    private void OnTriggerStay2D(Collider2D collision)
    {
        Debug.Log("Ontriggerstay");
    }
}