ParticelObjectPool

ParticelObjectPool

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

public class ParticelObjectPool : MonoBehaviour {
    private ParticleSystem _ParticleSystem;
    private ParticleSystemRenderer _ParticleSystemRenderer;
    private ParticleSystem.Particle[] _Particles;
    public GameObject _ParticelObject;
    private GameObject _ObjectPool;
    int numParticlesAlive;
    void Start()
    {
        InitParticleSystem();
        InitObjectPool();

    }
    void InitParticleSystem()
    {
        _ParticleSystem = GetComponent<ParticleSystem>();
        _ParticleSystemRenderer = GetComponent<ParticleSystemRenderer>();

        _Particles = new ParticleSystem.Particle[_ParticleSystem.main.maxParticles];
        _ParticleSystemRenderer.renderMode = ParticleSystemRenderMode.None;
    }

    void InitObjectPool()
    {
        if (_ObjectPool == null)
        {
            _ObjectPool = new GameObject();
            _ObjectPool.name = "ParticelObjectPool_" + _ParticelObject.name;
        }
        for (int i = 0; i < _ParticleSystem.main.maxParticles; i++)
        {
            GameObject go = Instantiate(_ParticelObject);
            go.transform.SetParent(_ObjectPool.transform);
        }
    }

    void Update()
    {
        numParticlesAlive = _ParticleSystem.GetParticles(_Particles);

        // SetObjectPool
        for (int i = 0; i < _ObjectPool.transform.childCount; i++)
        {
            if (i < numParticlesAlive)
            {
                _ObjectPool.transform.GetChild(i).gameObject.SetActive(true);
            }
            else
            {
                _ObjectPool.transform.GetChild(i).gameObject.SetActive(false);
            }
        }

        // SetObjectTransform
        for (int i = 0; i < numParticlesAlive; i++)
        {
            if (_ParticleSystem.main.simulationSpace == ParticleSystemSimulationSpace.World)
            {
                _ObjectPool.transform.GetChild(i).transform.position = _Particles[i].position;
            }
            else
            {
                Debug.Log(_Particles[i].position);
                _ObjectPool.transform.GetChild(i).transform.position = transform.TransformPoint(_Particles[i].position);
            }
            _ObjectPool.transform.GetChild(i).eulerAngles = _Particles[i].angularVelocity3D + _ParticleSystem.transform.eulerAngles;
        }
    }
}