Chessistics/Scripts/UI/LevelSelectScreen.cs

using Godot;
using System;

namespace Chessistics.Scripts.UI;

public partial class LevelSelectScreen : Control
{
    [Signal]
    public delegate void StartCampaignPressedEventHandler();

    public override void _Ready()
    {
        // Full-screen dark background
        var bg = new PanelContainer();
        bg.SetAnchorsPreset(LayoutPreset.FullRect);
        var bgStyle = new StyleBoxFlat { BgColor = new Color(0.12f, 0.12f, 0.14f) };
        bg.AddThemeStyleboxOverride("panel", bgStyle);
        bg.MouseFilter = MouseFilterEnum.Ignore;
        AddChild(bg);

        // Center content
        var center = new CenterContainer();
        center.SetAnchorsPreset(LayoutPreset.FullRect);
        center.MouseFilter = MouseFilterEnum.Ignore;

        var vbox = new VBoxContainer { Alignment = BoxContainer.AlignmentMode.Center };
        vbox.AddThemeConstantOverride("separation", 24);
        vbox.MouseFilter = MouseFilterEnum.Ignore;

        // Title
        var title = new Label
        {
            Text = "CHESSISTICS",
            HorizontalAlignment = HorizontalAlignment.Center
        };
        title.AddThemeFontSizeOverride("font_size", 56);
        title.AddThemeColorOverride("font_color", new Color("#FFD700"));
        vbox.AddChild(title);

        // Subtitle
        var subtitle = new Label
        {
            Text = "La Quête du Roi",
            HorizontalAlignment = HorizontalAlignment.Center
        };
        subtitle.AddThemeFontSizeOverride("font_size", 18);
        subtitle.AddThemeColorOverride("font_color", new Color("#999999"));
        vbox.AddChild(subtitle);

        // Spacer
        vbox.AddChild(new Control { CustomMinimumSize = new Vector2(0, 32) });

        // Start button
        var startBtn = new Button
        {
            Text = "Démarrer",
            CustomMinimumSize = new Vector2(200, 52),
            SizeFlagsHorizontal = SizeFlags.ShrinkCenter
        };

        var btnNormal = new StyleBoxFlat
        {
            BgColor = new Color("#8B6914"),
            CornerRadiusTopLeft = 8, CornerRadiusTopRight = 8,
            CornerRadiusBottomLeft = 8, CornerRadiusBottomRight = 8,
            ContentMarginLeft = 32, ContentMarginRight = 32,
            ContentMarginTop = 12, ContentMarginBottom = 12
        };
        var btnHover = new StyleBoxFlat
        {
            BgColor = new Color("#B8860B"),
            CornerRadiusTopLeft = 8, CornerRadiusTopRight = 8,
            CornerRadiusBottomLeft = 8, CornerRadiusBottomRight = 8,
            ContentMarginLeft = 32, ContentMarginRight = 32,
            ContentMarginTop = 12, ContentMarginBottom = 12
        };
        var btnPressed = new StyleBoxFlat
        {
            BgColor = new Color("#6B5010"),
            CornerRadiusTopLeft = 8, CornerRadiusTopRight = 8,
            CornerRadiusBottomLeft = 8, CornerRadiusBottomRight = 8,
            ContentMarginLeft = 32, ContentMarginRight = 32,
            ContentMarginTop = 12, ContentMarginBottom = 12
        };
        startBtn.AddThemeStyleboxOverride("normal", btnNormal);
        startBtn.AddThemeStyleboxOverride("hover", btnHover);
        startBtn.AddThemeStyleboxOverride("pressed", btnPressed);
        startBtn.AddThemeFontSizeOverride("font_size", 20);

        startBtn.Pressed += () => EmitSignal(SignalName.StartCampaignPressed);
        vbox.AddChild(startBtn);

        center.AddChild(vbox);
        AddChild(center);
    }
}