using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Obi;

[RequireComponent(typeof(ObiSolver))]
public class ObiParticleCounter : MonoBehaviour {

    ObiSolver solver;
    public int counter = 0;
    public Collider2D targetCollider = null;

    ObiNativeContactList frame;
    HashSet<int> particles = new HashSet<int>();

    void Awake(){
        solver = GetComponent<Obi.ObiSolver>();
    }

    void OnEnable () {
        solver.OnCollision += Solver_OnCollision;
    }

    void OnDisable(){
        solver.OnCollision -= Solver_OnCollision;
    }
    
    void Solver_OnCollision (object sender, ObiNativeContactList e)
    {
        HashSet<int> currentParticles = new HashSet<int>();
        
        for(int i = 0;  i < e.count; ++i)
        {
            if (e[i].distance < 0.001f)
            {

                /*Component collider;
                if (ObiCollider2D.idToCollider.TryGetValue(e.contacts.Data[i].other,out collider)){

                    if (collider == targetCollider)
                        currentParticles.Add(e.contacts.Data[i].particle);

                }*/
            }
        }

        particles.ExceptWith(currentParticles);
        counter += particles.Count;
		particles = currentParticles;Debug.Log(counter);
    }

}