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

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

namespace GodotHostTest.Game.Target;

public partial class Target : Node2D, ITarget
{
    private readonly Subject<Unit> _hit = new();

    private readonly Subject<Unit> _timedOut = new();
    [Export] public required Area2D CollisionArea;
    [Export] public required Sprite2D Image;
    [Export] public double TimeOutDurationInSeconds;
    [Export] public required Timer TimeOutTimer;

    [Inject] private ITargetCollector _targetCollector = null!;

    public Observable<Unit> TimedOut => _timedOut.AsObservable();

    public Observable<Unit> Hit => _hit.AsObservable();

    public void Enable()
    {
        Image.Visible = true;
        CollisionArea.Monitoring = true;
        TimeOutTimer.Start(TimeOutDurationInSeconds);
    }

    public override void _Ready()
    {
        _targetCollector.NewTarget(this);
    }

    public override void _ExitTree()
    {
        _timedOut.Dispose();
        _hit.Dispose();
    }

    // todo: hook to collision
    private void OnHit()
    {
        Disable();
        TimeOutTimer.Stop();
        _hit.OnNext(Unit.Default);
    }

    private void Disable()
    {
        Image.Visible = false;
        CollisionArea.Monitoring = false;
    }

    private void OnTimeout()
    {
        Disable();
        _timedOut.OnNext(Unit.Default);
    }
}