unity3d倒放粒子

秒速五厘米 2022-04-18 04:50 215阅读 0赞

[https://mp.weixin.qq.com/s/8yvrkbFfL0DIt4ZsymNiqQ][https_mp.weixin.qq.com_s_8yvrkbFfL0DIt4ZsymNiqQ]

using System.Collections;
    
    using System.Collections.Generic;
    
    using UnityEngine;
    
     
    
    public class ParticleSystemReverseSimulationSuperSimple : MonoBehaviour
    
    {
    
        ParticleSystem[] particleSystems;
    
     
    
        float[] simulationTimes;
    
     
    
        public float startTime = 2.0f;
    
        public float simulationSpeedScale = 1.0f;
    
     
    
        void Initialize()
    
        {
    
            particleSystems = GetComponentsInChildren<ParticleSystem>(false);
    
            simulationTimes = new float[particleSystems.Length];
    
        }
    
     
    
        void OnEnable()
    
        {
    
            if (particleSystems == null)
    
            {
    
                Initialize();
    
            }
    
     
    
            for (int i = 0; i < simulationTimes.Length; i++)
    
    { simulationTimes[i] = 0.0f; }
    
     particleSystems[0].Simulate(startTime, true, false, true);
    
    }
    
    void Update()
    
    {
    
    particleSystems[0].Stop(true, ParticleSystemStopBehavior.StopEmittingAndClear);
    
     
    
    for (int i = particleSystems.Length - 1; i >= 0; i--)
    
            {
    
                bool useAutoRandomSeed = particleSystems[i].useAutoRandomSeed;
    
                particleSystems[i].useAutoRandomSeed = false;
    
     
    
                particleSystems[i].Play(false);
    
     
    
                float deltaTime = particleSystems[i].main.useUnscaledTime ? Time.unscaledDeltaTime : Time.deltaTime;
    
                simulationTimes[i] -= (deltaTime * particleSystems[i].main.simulationSpeed) * simulationSpeedScale;
    
     
    
                float currentSimulationTime = startTime + simulationTimes[i];
    
                particleSystems[i].Simulate(currentSimulationTime, false, false, true);
    
     
    
                particleSystems[i].useAutoRandomSeed = useAutoRandomSeed;
    
     
    
                if (currentSimulationTime < 0.0f)
    
                {
    
                    particleSystems[i].Play(false);
    
                    particleSystems[i].Stop(false, ParticleSystemStopBehavior.StopEmittingAndClear);
    
                }
    
            }
    
        }
    
    }

[https_mp.weixin.qq.com_s_8yvrkbFfL0DIt4ZsymNiqQ]: https://mp.weixin.qq.com/s/8yvrkbFfL0DIt4ZsymNiqQ