Chessistics/Scripts/UI/ObjectivePanel.cs

using Godot;
using System.Collections.Generic;
using Chessistics.Engine.Model;

namespace Chessistics.Scripts.UI;

public partial class ObjectivePanel : VBoxContainer
{
    private readonly Dictionary<Coords, (Label label, ProgressBar bar, Label deadline)> _entries = new();

    public void Setup(IReadOnlyList<DemandDef> demands)
    {
        foreach (var child in GetChildren())
            child.QueueFree();
        _entries.Clear();

        var title = new Label { Text = "OBJECTIFS" };
        title.AddThemeFontSizeOverride("font_size", 16);
        title.AddThemeColorOverride("font_color", new Color("#B8942A")); // aged gold
        AddChild(title);

        AddChild(new HSeparator());

        foreach (var demand in demands)
        {
            var vbox = new VBoxContainer();
            vbox.AddThemeConstantOverride("separation", 2);

            var label = new Label { Text = $"{demand.Name}: 0/{demand.Amount} {demand.Cargo}" };
            label.AddThemeFontSizeOverride("font_size", 12);
            label.AddThemeColorOverride("font_color", new Color("#CCCCCC"));
            vbox.AddChild(label);

            var bar = new ProgressBar
            {
                MinValue = 0,
                MaxValue = demand.Amount,
                Value = 0,
                CustomMinimumSize = new Vector2(180, 14),
                ShowPercentage = false
            };

            // Style the progress bar
            var bgStyle = new StyleBoxFlat
            {
                BgColor = new Color(0.2f, 0.2f, 0.22f),
                CornerRadiusTopLeft = 3, CornerRadiusTopRight = 3,
                CornerRadiusBottomLeft = 3, CornerRadiusBottomRight = 3
            };
            var fillStyle = new StyleBoxFlat
            {
                BgColor = new Color("#3D6B8E"), // teal fill
                CornerRadiusTopLeft = 3, CornerRadiusTopRight = 3,
                CornerRadiusBottomLeft = 3, CornerRadiusBottomRight = 3
            };
            bar.AddThemeStyleboxOverride("background", bgStyle);
            bar.AddThemeStyleboxOverride("fill", fillStyle);
            vbox.AddChild(bar);

            var deadline = new Label { Text = $"Deadline: {demand.Deadline} coups" };
            deadline.AddThemeFontSizeOverride("font_size", 10);
            deadline.AddThemeColorOverride("font_color", new Color("#777777"));
            vbox.AddChild(deadline);

            AddChild(vbox);
            _entries[demand.Position] = (label, bar, deadline);
        }
    }

    public void UpdateProgress(Coords demandCell, string name, int current, int required)
    {
        if (!_entries.TryGetValue(demandCell, out var entry)) return;

        entry.label.Text = $"{name}: {current}/{required}";

        // Animate the progress bar value
        var tween = entry.bar.CreateTween();
        tween.TweenProperty(entry.bar, "value", (double)current, 0.2f)
            .SetEase(Tween.EaseType.Out).SetTrans(Tween.TransitionType.Cubic);

        if (current >= required)
        {
            entry.label.AddThemeColorOverride("font_color", new Color("#5AAC5A")); // warm green

            // Flash the progress bar green
            var fillStyle = new StyleBoxFlat
            {
                BgColor = new Color("#5AAC5A"),
                CornerRadiusTopLeft = 3, CornerRadiusTopRight = 3,
                CornerRadiusBottomLeft = 3, CornerRadiusBottomRight = 3
            };
            entry.bar.AddThemeStyleboxOverride("fill", fillStyle);
        }
    }
}