cirnogodot/Scripts/UI/DifficultyMenu.cs

using Cirno.Scripts.Enums;
using Cirno.Scripts.Resources;
using Godot;

namespace Cirno.Scripts.UI;

public partial class DifficultyMenu : MenuBase
{
    [Export] public MapResource StartMap { get; private set; }

    private void StartEasy()
    {
        StartGame(DifficultyLevel.Easy);
    }

    private void StartNormal()
    {
        StartGame(DifficultyLevel.Normal);
    }

    private void StartHard()
    {
        StartGame(DifficultyLevel.Hard);
    }

    private void StartLunatic()
    {
        StartGame(DifficultyLevel.Lunatic);
    }
    
    public void StartGame(DifficultyLevel difficultyLevel)
    {
        if (StartMap is null) return;
        GlobalState.Session.NewSession();
        GlobalState.Session.AllowSaving = true;
        GlobalState.Session.Difficulty = difficultyLevel;
        GlobalState.Session.GameMode = GameMode.Game;
        GlobalState.Instance.GotoScene(StartMap);
    }
}