using System.Collections.Generic;
using UnityEngine;

public class ParticleCollision : MonoBehaviour
{
	public List<int> subEmmiterIds = new List<int>();

	private ParticleSystem _particleSystem;

	private List<ParticleCollisionEvent> _collisionEvents = new List<ParticleCollisionEvent>();

	private ParticleSystem.Particle[] _particles;

	private float _lifetime;

	public float particleDistanceCheck = 0.5f;

	public Vector3 offset = new Vector3(0f, 0.3f, 0f);

	public bool debug;

	private void Start()
	{
		_particleSystem = GetComponent<ParticleSystem>();
		_lifetime = _particleSystem.main.startLifetime.constant;
		_particles = new ParticleSystem.Particle[_particleSystem.main.maxParticles];
	}

	private void OnParticleCollision(GameObject other)
	{
		_particleSystem.GetCollisionEvents(other, _collisionEvents);
		foreach (ParticleCollisionEvent collisionEvent in _collisionEvents)
		{
			if (!(collisionEvent.intersection != Vector3.zero))
			{
				continue;
			}
			int particles = _particleSystem.GetParticles(_particles);
			for (int i = 0; i < particles; i++)
			{
				if (debug)
				{
					Debug.Log($"{_particles[i].startLifetime} {_lifetime} {Mathf.Abs(_particles[i].startLifetime - _lifetime) < 0.0001f}");
				}
				if (!(Mathf.Abs(_particles[i].startLifetime - _lifetime) < 0.0001f) || !(Vector3.Magnitude(base.transform.TransformPoint(_particles[i].position) - collisionEvent.intersection) < particleDistanceCheck))
				{
					continue;
				}
				if (debug)
				{
					Debug.Log("collision particle " + i + " " + _particles[i].startLifetime);
				}
				_particles[i].startLifetime -= 0.01f;
				_particles[i].position += offset;
				foreach (int subEmmiterId in subEmmiterIds)
				{
					if (debug)
					{
						Debug.Log($"Emitter triggered {subEmmiterId}");
					}
					_particleSystem.TriggerSubEmitter(subEmmiterId, ref _particles[i]);
				}
				break;
			}
			_particleSystem.SetParticles(_particles, particles);
		}
	}
}