starfighter/MB_FYP/script/main_menu.cs

using Godot;
using System;

public partial class main_menu : Control
{
	// Called when the node enters the scene tree for the first time.
	private input_menu _inputMenu;
	
	public override void _Ready()
	{
		_inputMenu = GetNode<input_menu>("InputMenu");
		
		//Connecting Buttons
		GetNode<Button>("Layout/StartButton").Pressed += OnStartButtonPressed;
		GetNode<Button>("Layout/ExitButton").Pressed += OnExitButtonPressed;
		GetNode<Button>("Layout/InputButton").Pressed += OnInputButtonPressed;
	}

	private void OnStartButtonPressed()
	{
		GetTree().ChangeSceneToFile("res://scenes/game.tscn");
	}

	private void OnExitButtonPressed()
	{
		GetTree().Quit();
	}

	private void OnInputButtonPressed()
	{
		_inputMenu.Show();
	}

	// Called every frame. 'delta' has been the elapsed time since the previous frame.
	public override void _Process(double delta)
	{
	}
}