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

public class CollisionEventTrigger : MonoBehaviour
{
    // Public event that can be assigned in the Unity Editor
    public UnityEvent OnCollisionEnterEvent;

    // Delay time in seconds
    public float delay = 0f;

    // Tag of the object that triggers the event
    public bool useTagFilter = false;
    public string targetTag;

    // Flag to enable triggering the event only once
    public bool triggerOnlyOnce = false;
    private bool hasTriggered = false;

    // Method called when a collision occurs
    private void OnCollisionEnter(Collision collision)
    {
        // Check if the event has already been triggered
        if (triggerOnlyOnce && hasTriggered)
        {
            return;
        }

        //Debug.Log("Collision detected with: " + collision.gameObject.name);

        if (useTagFilter && collision.gameObject.tag != targetTag)
        {
            //Debug.Log("Collision with object with different tag.");
            return;
        }

        StartCoroutine(InvokeEventWithDelay());

        // Set the flag to indicate the event has been triggered
        if (triggerOnlyOnce)
        {
            hasTriggered = true;
        }
    }

    // Coroutine to invoke the event with delay
    private IEnumerator InvokeEventWithDelay()
    {
        // Wait for the specified delay
        yield return new WaitForSeconds(delay);

        // Check if the event is assigned (not null)
        if (OnCollisionEnterEvent != null)
        {
            //Debug.Log("Event is being invoked.");
            // Invoke the event
            OnCollisionEnterEvent.Invoke();
        }
        else
        {
            Debug.LogWarning("OnCollisionEnterEvent is not assigned.");
        }
    }
}