particles/Particle.cs

using Godot;

public class Particle : Node2D
{
    private Sprite _spriteNode;
    private ParticleType _type;

    public Vector2 Velocity { get; set; }

    public ParticleType Type
    {
        get => _type;
        set
        {
            _type = value;
            _spriteNode.Modulate = Color.FromHsv(_type.Hue, 1, 1);
        }
    }

    public override void _Ready()
    {
        _spriteNode = GetNode<Sprite>("Sprite");
    }
}