using Godot;
using System.Collections.Generic;

public partial class PlayerInteractor : Area2D
{
	private readonly List<Creature> _nearbyCreatures = new();
	private GameRoot _gameRoot = null!;

	public override void _Ready()
	{
		AreaEntered += OnAreaEntered;
		AreaExited += OnAreaExited;
	}

	public override void _Process(double delta)
	{
		if (!Input.IsActionJustPressed("interact"))
			return;

		var creature = GetClosestCreature();
		if (creature == null) return;
		
		// Ask GameRoot to start capture
		GameRoot.Instance.RequestCapture(creature);
	}

	private void OnAreaEntered(Area2D area)
	{
		if (area is Creature c && !c.IsCaptured)
			_nearbyCreatures.Add(c);
	}

	private void OnAreaExited(Area2D area)
	{
		if (area is Creature c)
			_nearbyCreatures.Remove(c);
	}

	private Creature? GetClosestCreature()
	{
		Creature? best = null;
		float bestDist = float.MaxValue;

		foreach (var c in _nearbyCreatures)
		{
			if (!IsInstanceValid(c)) continue;
			float d = GlobalPosition.DistanceSquaredTo(c.GlobalPosition);
			if (d < bestDist) { bestDist = d; best = c; }
		}
		return best;
	}
}