SupaLidlGame/Extensions/Node.cs

using Godot;

namespace SupaLidlGame.Extensions
{
    public static class NodeExtensions
    {
        /// <summary>
        /// Iterates through each ancestor until it finds an ancestor of type
        /// <c>T</c>
        /// </summary>
        public static T GetAncestor<T>(this Node node) where T : Node
        {
            Node parent;

            while ((parent = node.GetParent()) != null)
            {
                if (parent is T t)
                {
                    return t;
                }

                node = parent;
            }

            return null;
        }

        /// <summary>
        /// A version <c>GetNode</c> that returns null rather than cause an
        /// exception if the node is not found or is not the same type.
        /// </summary>
        /// <returns>
        /// <see langword="null">null</see> if <param>name</param> does not match
        /// a valid Node
        /// </returns>
        public static T GetN<T>(this Node node, string name) where T : Node
        {
            return node.GetNode(name) as T;
        }
    }
}