cirnogodot/Scripts/Hud.cs

using Godot;
using System;

public partial class Hud : CanvasLayer
{
	[Signal]
	public delegate void StartGameEventHandler();

	public void ShowMessage(string text)
	{
		var message = GetNode<Label>("Message");
		message.Text = text;
		message.Show();

		GetNode<Timer>("MessageTimer").Start();
	}

	async public void ShowGameOver()
	{
		ShowMessage("Game Over");

		var messageTimer = GetNode<Timer>("MessageTimer");
		await ToSignal(messageTimer, Timer.SignalName.Timeout);

		var message = GetNode<Label>("Message");
		message.Text = "Dodge the Creeps!";
		message.Show();

		await ToSignal(GetTree().CreateTimer(1.0), SceneTreeTimer.SignalName.Timeout);
		GetNode<Button>("StartButton").Show();
	}
}