Key2.cs

using Godot;
using System;
using MysticRunescape;
public class Key2 : KinematicBody2D
{
    // Declare member variables here. Examples:
    // private int a = 2;
    // private string b = "text";
    private Vector2 velocity = new Vector2(0, 0);

    private bool followingPlayer;
    
    private bool pickedUp;
    
    [Export]
    
    public string DoorToOpen2;
    
    
    
    
    public override void _Ready()
    {
        
    }

    public override void _PhysicsProcess(float delta)
    {
        if (followingPlayer)
        {
            if (GameManager.Player.GetNode<AnimatedSprite>("AnimatedSprite").FlipH)
            {
                velocity = GameManager.Player.GetNode<Position2D>("KeyFollowLocationRight").GlobalPosition - GlobalPosition;
            }
            else 
                velocity = GameManager.Player.GetNode<Position2D>("KeyFollowLocationLeft").GlobalPosition - GlobalPosition;
        }

        MoveAndSlide(velocity * 5f, Vector2.Up);
    }

    private void _on_Area2D_body_entered(object body)
    {
        if (!pickedUp)
        {
            if (body is Adventurer)
            {
                followingPlayer = true;
                pickedUp = true;
                GameManager.Player.Keys2.Add(this);
            }
        }
    }

}