revival/game/Assets/Scripts/PressurePlate/PressurePlate.cs

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

public class PressurePlate : MonoBehaviour
{
    [SerializeField] private float _triggerDelay = 2.0f;
    [SerializeField] private Animator pPlateAnim = null;
    [SerializeField] private UnityEvent _onPress;

    private bool opened;
    
    private float? triggered = null;

    private void OnTriggerEnter(Collider other)
    {
        Debug.Log(opened);
        Debug.Log("entered trigger");
        if (other.CompareTag("Player") && !opened)
        {
            //pressure plate down and start trigger time
            pPlateAnim.Play("PPdown", 0, 0f);
            triggered = Time.time;
        }
    }

    private void OnTriggerExit(Collider other)
    {
        if(other.CompareTag("Player"))
        {
            if(triggered!=null && !opened)
            {
                triggered = null;
                pPlateAnim.Play("PPup", 0, 0f);
                //reset platform position
            }
        }
    }

    private void Update()
    {
        var timepassed = Time.time - triggered;

        if(timepassed > _triggerDelay && !opened)
        {
            _onPress.Invoke();
            opened = true;
        }
    }

    public void plateUp()
    {
        pPlateAnim.Play("PPup", 0, 0);
        triggered = null;
        opened = false;
    }
}