using Godot;
using System;

public partial class Cue : Sprite2D
{
	[Signal]
	public delegate void ShootEventHandler(Vector2 impulse);
	
	public int _powerDirection = 1;
	public float _power = 0.0f, _maxPower = 8.0f;
	public ProgressBar _progressBar;
	
	public override void _Ready()
	{
		_progressBar = GetParent().GetNode<ProgressBar>("PowerBar");
	}
	
	public override void _Process(double delta_)
	{
		Vector2 mousePosition = GetViewport().GetMousePosition();
		LookAt(mousePosition);
		if (Input.IsActionPressed("left_click"))
		{
			_power += 0.1f * _powerDirection;
			if (_power >= _maxPower)
			{
				_powerDirection = -1;
			}
			else if (_power <= 0)
			{
				_powerDirection = 1;
			}
		}
		else
		{
			if (_power > 0f)
			{
				_powerDirection = 1;
				Vector2 direction = mousePosition - Position;
				EmitSignal(SignalName.Shoot, _power * direction);
				_power = 0;
			}
		}
		
	}
	
	public void HideCue()
	{
		SetProcess(false);
		Hide();
		_progressBar.Hide();
	}
	
	public void ShowCue()
	{
		Ball cueBall = GetParent().GetNode<Ball>("CueBall");
		SetProcess(true);
		Position = cueBall.Position;
		_progressBar.Position = new Vector2(cueBall.Position.X - _progressBar.Size.X / 2, cueBall.Position.Y + _progressBar.Size.Y / 2);
		Show();
		_progressBar.Show();
	}
	
}