using Godot;
using System;

//
// Projectile that travels from left to right
//

public partial class LinearProjectile : Area2D, IProjectile
{
    [Export(hintString: "suffix:tile/sec")]
    private float _speed;
    [Export]
    private int _damage;
    private int _line;
    public int Line { get => _line; set {  _line = value; } }

    public override void _PhysicsProcess(double delta)
    {
        Translate(Vector2.Right * _speed * (float)delta * Utility.TileWidth);
    }

    public void OnAreaEntered(Area2D area)
    {
        var entity = area.GetParent<IEntity>();
        if (entity != null && entity.Line == _line)
        {
            entity.TakeDamage(_damage);
            QueueFree();
        }
    }
}