using Godot;

public partial class RemotePathFollow2D : Path2D
{
    [Export] public Node2D Target { get; set; } = null;
    [Export] public double Speed { get; set; } = 1;
    
    public bool Started => _started;
    public bool Finished => _pathFollowNode.ProgressRatio >= 1;

    private PathFollow2D _pathFollowNode = new PathFollow2D();
    
    private bool _started = true;
    private Vector2 _startingPosition;
    
    public RemotePathFollow2D() { }
    public RemotePathFollow2D(Node2D target) => Target = target;
    public RemotePathFollow2D(float speed) => Speed = speed;
    public RemotePathFollow2D(Node2D target, float speed) => (Target, Speed) = (target, speed);
    
    public override void _Ready()
    {
        base._Ready();

        _pathFollowNode.Loop = false;
        _pathFollowNode.CubicInterp = false;

        AddChild(_pathFollowNode);
    }

    public override void _Process(double delta)
    {
        base._Process(delta);
    }

    public override void _PhysicsProcess(double delta)
    {
        base._Process(delta);

        if (Started)
        {
            _pathFollowNode.Progress += (float)(Speed * delta);
            Target.Position = _startingPosition + _pathFollowNode.Position;
        }
        
    }

    public void Start()
    {
        _startingPosition = Target.Position;
        _started = true;
    }
}