Godot 2d c# Slot

using Godot;
using System;

public class Slot : Control
{
  private bool isDragged = false;

  // Called when the node enters the scene tree for the first time.
  public override void _Ready()
  {

  }

  // Called every frame. 'delta' is the elapsed time since the previous frame.
  public override void _PhysicsProcess(float delta)
  {
    if (isDragged)
    {
      RectGlobalPosition = GetGlobalMousePosition();
    }
  }

  private void _on_Slot_gui_input(InputEvent @event)
  {
    if (@event is InputEventMouseButton mouseButton)
    {
      if (mouseButton.ButtonIndex == (int)ButtonList.Left)
      {
        if (mouseButton.Pressed)
        {
          isDragged = true;
        }
        else
        {

          isDragged = false;
        }
      }
      else if (mouseButton.ButtonIndex == (int)ButtonList.Right && mouseButton.Pressed)
      {
        GetTree().Root.GetNode<Player>("Node2D/Player").RemoveItem(this);
      }
    }
  }
}