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, bool completed)> _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);

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

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

        // Once completed, stop updating
        if (entry.completed) return;

        // Cap display at required value
        int displayCurrent = Math.Min(current, required);
        entry.label.Text = $"{name}: {displayCurrent}/{required}";

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

        if (current >= required)
        {
            entry.label.Text = $"{name}: {required}/{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);

            // Mark as completed — no further updates
            _entries[demandCell] = (entry.label, entry.bar, true);
        }
    }
}