godot-host-test/Game/Score/Score.cs

using Godot;
using GodotHostTest.Helpers;
using GodotHostTest.Interfaces;
using OwofGames.AetherBind;
using R3;

namespace GodotHostTest.Game.Score;

public partial class Score : Control
{
    [Export] private AnimationPlayer _animationPlayer = null!;

    [Inject] private ICurrentLevel _currentLevel = null!;
    [Export] private Label _label = null!;
    [Inject] private IScore _score = null!;

    public override void _Ready()
    {
        // update the score label whenever the score changes
        _score.Score
            .Subscribe(UpdateScore)
            .AddTo(this);

        // run an animation whenever the score decreases
        _score.Score
            .Chunk(2, 1)
            .Where(values => values.Length == 2 && values[1] < values[0])
            .Subscribe(OnScoreDecreasing)
            .AddTo(this);
    }

    private void OnScoreDecreasing<T>(T _)
    {
        _animationPlayer.Play("wiggle");
    }

    private void UpdateScore(int newScore)
    {
        _label.Text = $"Level {_currentLevel.LevelNumber} - Score: {newScore}";
    }
}