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, IScore
{
    [Export] private AnimationPlayer _animationPlayer = null!;
    [Export] private Label _label = null!;

    private int _score;
    [Inject] private ITargetSpawner _targetSpawner = null!;

    int IScore.Score => _score;

    public override void _Ready()
    {
        _targetSpawner.TargetSpawned.Subscribe(OnTargetSpawned).AddTo(this);
        base._Ready();
    }

    private void OnTargetSpawned(ITarget target)
    {
        _animationPlayer.Play("wiggle");
        target.Hit.Select(_ => 20).Merge(target.TimedOut.Select(_ => -5)).SubscribeOnce(delta =>
        {
            _score += delta;
            UpdateScore();
        }).AddTo(this);
    }

    private void UpdateScore()
    {
        _label.Text = $"Score: {_score}";
    }
}