This tutorial will look at adding falling obstacles to your game that will reset once they’ve fallen a certain distance. These obstacles won’t collide with anything but the Player.

using UnityEngine;

public class FallingObjects : MonoBehaviour
{
    private Rigidbody2D rb;
    private Vector3 startPosition;

    [Range(5f, 50f)]
    public float maxDistance = 15f; // distance before it resets

    private void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        startPosition = transform.position;
        
    }

    private void Update()
    {
        // Check if the object has fallen too far from its start position
        if (Vector3.Distance(transform.position, startPosition) > maxDistance)
        {
            transform.position = startPosition;
            rb.velocity = Vector2.zero;
            rb.angularVelocity = 0f;
        }
    }

    private void OnTriggerEnter2D(Collider2D other)
    {
        if (other.name == "Player")
        {
            other.GetComponent<ResetPlayer>().ResetToStart();
        }
    }
}