rabidus-test/Assets/Scripts/CheckPoint.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.Playables;

public class CheckPoint : MonoBehaviour
{
    public UnityEvent OnCheckpointPass;

    private SplineTrigger _splineTrigger;

    [ContextMenu("Debug Checkpoint")]
    public void CheckPointPass(Collider collider)
    {
        OnCheckpointPass?.Invoke(); 
    }

    private void Awake()
    {
        _splineTrigger = GetComponentInChildren<SplineTrigger>();
    }

    private void OnEnable()
    {
        _splineTrigger.OnTriggerEvent.AddListener(CheckPointPass);
    }

    private void OnDisable()
    {
        _splineTrigger.OnTriggerEvent.RemoveListener(CheckPointPass);
    }

}