cirnogodot/Scripts/Components/AutodeleteParticle.cs

using Godot;

namespace Cirno.Scripts.Components;

public partial class AutodeleteParticle : GpuParticles2D
{
    
    [Export]
    public double LifeTime { get; private set; }

    private double _timer = 0;

    public void Init()
    {
        this.Emitting = true;
    }

    public override void _Process(double delta)
    {
        _timer += delta;

        if (_timer >= LifeTime || this.Emitting == false)
        {
            QueueFree();
        }
    }
}