using System.Collections.Generic;
using Godot;


public partial class ProjectilePool : Node
{
    [Export] private PackedScene _scene;
    [Export] private int _poolSize;

    private readonly Queue<Projectile> _pool = new();
    
    public override void _Ready()
    {
        for (int i = 0; i < _poolSize; i++)
        {
            _pool.Enqueue(CreateProjectile());
        }
    }

    private Projectile CreateProjectile()
    {
        var p = _scene.Instantiate<Projectile>();
        p.OnDespawn += ReturnToPool;
        return p;
    }

    public Projectile Get()
    {
        var p = _pool.Count > 0 ? _pool.Dequeue() : CreateProjectile();
        return p;
    }

    private void ReturnToPool(Projectile p)
    {
        p.GetParent()?.RemoveChild(p);
        p.ProcessMode = ProcessModeEnum.Disabled;
        _pool.Enqueue(p);
    }
}