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

public class BaseTrigger : MonoBehaviour {
	public Circuit Circuit { get; private set; }

	private readonly List<GameObject> colliders = new List<GameObject>();

	void Awake() {
		Circuit = GetComponentInParent<Circuit>();
	}

	private void OnMouseEnter() {
		if (EventSystem.current) {
			if (!EventSystem.current.IsPointerOverGameObject())
				Circuit.OnMouseEnter();
		}
		
	}

	private void OnMouseExit() {
		Circuit.OnMouseExit();
	}

	private void OnCollisionEnter(Collision collision) {
		if (Circuit.isDragged) {
			colliders.Add(collision.gameObject);
			if (colliders.Count == 1)
				Circuit.OnCollisionEnter();
		}
	}

	private void OnCollisionExit(Collision collision) {
		if (Circuit.isDragged) {
			colliders.Remove(collision.gameObject);
			if (colliders.Count == 0)
				Circuit.OnCollisionExit();
		}
	}

}