Continentis/Assets/OtherPlugins/Feel/MMTools/Accessories/MMParticles/MMDelayParticles.cs

using UnityEngine;

namespace MoreMountains.Tools
{
    [ExecuteAlways]
    /// <summary>
    /// MM delay particles.
    /// </summary>
    [AddComponentMenu("More Mountains/Tools/Particles/MM Delay Particles")]
    public class MMDelayParticles : MonoBehaviour
    {
        [Header("Delay")]
        /// the duration of the delay, in seconds
        public float Delay;

        /// if this is true, this will delay by the same amount all children particle systems of this object
        public bool DelayChildren = true;

        /// if this is true, the delay will be applied on Start
        public bool ApplyDelayOnStart;

        [MMInspectorButtonAttribute("ApplyDelay")]
        public bool ApplyDelayButton;

        protected Component[] particleSystems;

        protected virtual void Start()
        {
            if (ApplyDelayOnStart) ApplyDelay();
        }

        protected virtual void ApplyDelay()
        {
            if (gameObject.GetComponent<ParticleSystem>() != null)
            {
                var main = gameObject.GetComponent<ParticleSystem>().main;
                main.startDelay = main.startDelay.constant + Delay;
            }

            particleSystems = GetComponentsInChildren<ParticleSystem>();
            foreach (ParticleSystem system in particleSystems)
            {
                var main = system.main;
                main.startDelay = main.startDelay.constant + Delay;
            }
        }
    }
}