using Godot;
using System;
using System.Runtime;
/// TODO create a few types of balls
public partial class Ball : RigidBody2D
{
	[Signal]
	public delegate void OnHoverEventHandler(Ball THIS, bool HOVERED);
	[Signal]
	public delegate void OnCollisionEventHandler(Ball THIS, Ball TARGET);
	[Signal]
	public delegate void OnLaunchEventHandler(Ball THIS);
	[Signal]
	public delegate void OnMovementEventHandler(Ball THIS, bool MOVING);

	public bool _active = false, _placed = false, _potted = false, _available = false, _hovered = false, _selected = false, _aimed = false, _launched = false, _moving = false, _isCue = false;
	public float _moveThreshold = 5.0f;
	public string _imagePath = null; 
	public Vector2I _rackPosition = new Vector2I(0, 0);
	public Manager _owner = null;

	public override void _Process(double DELTA_)
	{
		if (LinearVelocity.Length() > 0 && LinearVelocity.Length() < _moveThreshold)
		{
			Sleeping = true;
			if (_moving)
			{
				ProcessOnStop();
				_moving = false;
				EmitSignal(SignalName.OnMovement, this, false);
				if (_launched)
				{
					_launched = false;
				}
			}
		}
		else if (LinearVelocity.Length() >= _moveThreshold)
		{
			ProcessOnMovement();
			if (!_moving)
			{
				_moving = true;
				EmitSignal(SignalName.OnMovement, this, true);
			}
		}
	}

	public void Launch()
	{
		ProcessOnLaunch();
	}

	public void Pot()
	{
		Sleeping = true;
		_active = false;
		_placed = false;
		_potted = true;
		_moving = false;
	}

	public void SetSprite(string PATH)
	{
		_imagePath = PATH;
		GetNode<Sprite2D>("Image").Texture = GD.Load<Texture2D>(PATH);
	}

	private void OnBodyEntered(Node2D TARGET)
	{
		if (TARGET is Ball)
		{
			Ball target = (Ball)TARGET;
			ProcessOnCollision(target);
		}
	}

	private void OnMouseEntered()
	{
		if (_active)
		{
			_hovered = true;
			EmitSignal(SignalName.OnHover, this, true);
		}
	}

	private void OnMouseExited()
	{
		if (_active)
		{
			_hovered = false;
			EmitSignal(SignalName.OnHover, this, false);
		}
	}


	//Processes
	// public virtual void ProcessOnAdd()
	// {

	// }

	// public virtual void ProcessOnBattleStart()
	// {

	// }

	// public virtual void ProcessOnBattleEnd()
	// {

	// }

	public virtual void ProcessOnCollision(Ball TARGET)
	{
		EmitSignal(SignalName.OnCollision, this, TARGET);
	}

	// public virtual void ProcessOnCreation()
	// {

	// }

	// public virtual void ProcessOnCritical()
	// {

	// }

	// public virtual void ProcessOnDeath()
	// {

	// }

	// public virtual void ProcessOnDefend()
	// {

	// }

	// public virtual void ProcessOnExpiration()
	// {

	// }

	public virtual void ProcessOnLaunch()
	{
		_launched = true;
		EmitSignal(SignalName.OnLaunch, this);
	}

	public virtual void ProcessOnMovement()
	{
		
	}

	// public virtual void ProcessOnRemove()
	// {

	// }

	// public virtual void ProcessOnSell()
	// {

	// }

	public virtual void ProcessOnStop()
	{
		
	}

	// public virtual void ProcessOnTurnEnd()
	// {

	// }

	// public virtual void ProcessOnTurnStart()
	// {

	// }
	
	
	
}