cirnogodot/Scenes/Interactable.cs

using Godot;
using System;
using System.Diagnostics;

public partial class Interactable : Area2D
{
	[Export] public Activable Target { get; set; }
	[Export] public bool RequiresKeycard { get; set; }
	private InventoryManager _inventoryManager;

	public override void _Ready()
	{
		_inventoryManager = GetNode<InventoryManager>("/root/GameScene/InventoryManager");
	}

	public void Activate()
	{
		if (RequiresKeycard) {
			if (_inventoryManager.RedKeycard) {
				Target?.Activate();
			}
		}
		else 
		{
			Target?.Activate();
		}
	}
}